-
9 Publicações
-
0 fotos
-
0 Vídeos
-
Male
-
03/08/1993
-
Seguido por 0 pessoas
Atualizações Recentes
-
Over the past decade, feeding tube use in nursing home residents with advanced dementia has declined by 50% among white and black patients. Little is known about whether a similar reduction has occurred in other invasive interventions, such as mechanical ventilation.
Retrospective cohort study.
Acute-care hospitals in the United States.
Medicare beneficiaries with advanced dementia who previously resided in a nursing home and were hospitalized between 2001 and 2014 with pneumonia and/or septicemia and of either black or white race.
Invasive mechanical ventilation (IMV), as identified by International Classification of Diseases (ICD) procedure codes. https://www.selleckchem.com/products/chir-98014.html Two multivariable logistic regression models examined the association between race and the likelihood of receiving IMV, adjusting for patients' demographics, physical function, and comorbidities. A hospital fixed-effects model examined the association of race within a hospital, whereas a random-effects logistic model was used to estimate the between-hospn whites, based, in part, on the hospitals where black patients receive care.Urinary peptides gained significant attention as potential biomarkers especially in the context of kidney and cardiovascular disease. In this manuscript the recent literature since 2015 on urinary peptide investigation in human kidney and cardiovascular disease is reviewed. The technology most commonly used in this context is capillary electrophoresis coupled mass spectrometry, in part owed to the large database available and the well-defined dataspace. Several studies based on over 1000 subjects are reported in the recent past, especially examining CKD273, a classifier for assessment of chronic kidney disease based on 273 urine peptides. Interestingly, the most abundant urinary peptides are generally collagen fragments, which may have gone undetected for some time as they are typically modified via proline hydroxylation. The data available suggest that urinary peptides specifically depict inflammation and fibrosis, and may serve as a non-invasive tool to assess fibrosis, which appears to be a key driver in kidney and cardiovascular disease. The recent successful completion of the first urinary peptide guided intervention trial, PRIORITY, is expected to further spur clinical application of urinary peptidomics, aiming especially at early detection of chronic diseases, prediction of progression, and prognosis of drug response.Sepsis results from a major systemic inflammatory response and can induce disorders in multiple organs. The present study evaluated the potential protective effects of oleuropein (OLE) against hyperinflammatory responses during lipopolysaccharide (LPS)-induced sepsis in ****. Sixty male Balb/c **** were randomly categorized into five groups of 12 animals each control, intraperitoneally injected with OLE (50 mg/kg), injected with LPS (10 mg/kg, intraperitoneal), and two groups administered OLE (25 and 50 mg/kg) for 3 days prior to LPS injection. Twenty-four hours after lipopolysaccharide injection, the animals were sacrificed. Serum, liver, and kidney tissue samples were collected for biochemical analyses, histopathological examinations, and investigation of inflammation-related gene expression. OLE pretreatment significantly reduced liver damage parameters (alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase) and kidney damage parameters (blood urea nitrogen, creatinine, and kidney injury molecule-1) in the septic ****. OLE pretreatment ameliorated LPS-induced liver and kidney histological changes. OLE significantly mitigated the increased levels of malondialdehyde in the liver and kidneys and reduced levels of reduced glutathione induced by LPS. LPS injection also resulted in increased expression of the proinflammatory cytokines (TNF-α, IL-1β, and IL-6) and inflammation-related genes (Nos2, Hmgb1, Mpo, Cd46, Map2k4, and Map2k7) in the hepatic and renal tissues. OLE reduced these expressions to ameliorate the inflammatory response. Moreover, OLE pretreatment enhanced the survival rate of septic ****. In conclusion, OLE alleviated the inflammatory response to protect against LPS-induced sepsis in ****.
The peri-implant soft tissue phenotype (PSP) encompasses the keratinized mucosa width (KMW), mucosal thickness (MT), and supracrestal tissue height (STH). Numerous approaches to augment soft tissue volume around endosseous dental implants have been investigated. To what extent PSP modification is beneficial for peri-implant health has been subject of debate in the field of implant dentistry. The aim of this systematic review was to analyze the evidence regarding the efficacy of soft tissue augmentation procedures aimed at modifying the PSP and their impact on peri-implant health.
A comprehensive search was performed to identify clinical studies that involved soft tissue augmentation around dental implants and reported findings on KMW, MT, and/or STH changes. The effect of the intervention on peri-implant health was also assessed. Selected articles were classified based on the general type of surgical approach to increase PSP, either bilaminar or an apically positioned flap (APF) technique. A network meta-TG or ADM obtained the highest amount of MT gain, whereas APF in combination with FGG was the most effective technique for increasing KMW. KMW augmentation via APF was associated with a significant reduction in probing depth, soft tissue dehiscence and plaque index, regardless of the soft tissue grafting material employed, whereas bilaminar techniques with CTG or CM showed beneficial effects on marginal bone level stability.
Current patient-reported outcome measures do not adequately capture the impact of spasmodic dysphonia (SD) on communication in daily life situations. The aim of this study was to validate the Communicative Participation Item Bank (CPIB), which specifically measures a disease's impact on daily conversational situations, as an outcome measure for SD.
Multi-institutional prospective cohort study.
A prospective study was conducted with administration of the 46-question CPIB and the Voice Handicap Index-10 (VHI-10) to 190 participants with SD before (time 1) and 6 weeks after (time 2) botulinum toxin injection. Differential item function (DIF) analyses were performed to examine potential item bias. Paired t-tests were used to assess change in each of the CPIB and VHI-10 scores after treatment. Pearson correlations were calculated between the CPIB and VHI-10.
DIF analyses revealed no clinically meaningful difference between the item parameters generated for this SD sample and the original CPIB calibration sample.
Over the past decade, feeding tube use in nursing home residents with advanced dementia has declined by 50% among white and black patients. Little is known about whether a similar reduction has occurred in other invasive interventions, such as mechanical ventilation. Retrospective cohort study. Acute-care hospitals in the United States. Medicare beneficiaries with advanced dementia who previously resided in a nursing home and were hospitalized between 2001 and 2014 with pneumonia and/or septicemia and of either black or white race. Invasive mechanical ventilation (IMV), as identified by International Classification of Diseases (ICD) procedure codes. https://www.selleckchem.com/products/chir-98014.html Two multivariable logistic regression models examined the association between race and the likelihood of receiving IMV, adjusting for patients' demographics, physical function, and comorbidities. A hospital fixed-effects model examined the association of race within a hospital, whereas a random-effects logistic model was used to estimate the between-hospn whites, based, in part, on the hospitals where black patients receive care.Urinary peptides gained significant attention as potential biomarkers especially in the context of kidney and cardiovascular disease. In this manuscript the recent literature since 2015 on urinary peptide investigation in human kidney and cardiovascular disease is reviewed. The technology most commonly used in this context is capillary electrophoresis coupled mass spectrometry, in part owed to the large database available and the well-defined dataspace. Several studies based on over 1000 subjects are reported in the recent past, especially examining CKD273, a classifier for assessment of chronic kidney disease based on 273 urine peptides. Interestingly, the most abundant urinary peptides are generally collagen fragments, which may have gone undetected for some time as they are typically modified via proline hydroxylation. The data available suggest that urinary peptides specifically depict inflammation and fibrosis, and may serve as a non-invasive tool to assess fibrosis, which appears to be a key driver in kidney and cardiovascular disease. The recent successful completion of the first urinary peptide guided intervention trial, PRIORITY, is expected to further spur clinical application of urinary peptidomics, aiming especially at early detection of chronic diseases, prediction of progression, and prognosis of drug response.Sepsis results from a major systemic inflammatory response and can induce disorders in multiple organs. The present study evaluated the potential protective effects of oleuropein (OLE) against hyperinflammatory responses during lipopolysaccharide (LPS)-induced sepsis in mice. Sixty male Balb/c mice were randomly categorized into five groups of 12 animals each control, intraperitoneally injected with OLE (50 mg/kg), injected with LPS (10 mg/kg, intraperitoneal), and two groups administered OLE (25 and 50 mg/kg) for 3 days prior to LPS injection. Twenty-four hours after lipopolysaccharide injection, the animals were sacrificed. Serum, liver, and kidney tissue samples were collected for biochemical analyses, histopathological examinations, and investigation of inflammation-related gene expression. OLE pretreatment significantly reduced liver damage parameters (alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase) and kidney damage parameters (blood urea nitrogen, creatinine, and kidney injury molecule-1) in the septic mice. OLE pretreatment ameliorated LPS-induced liver and kidney histological changes. OLE significantly mitigated the increased levels of malondialdehyde in the liver and kidneys and reduced levels of reduced glutathione induced by LPS. LPS injection also resulted in increased expression of the proinflammatory cytokines (TNF-α, IL-1β, and IL-6) and inflammation-related genes (Nos2, Hmgb1, Mpo, Cd46, Map2k4, and Map2k7) in the hepatic and renal tissues. OLE reduced these expressions to ameliorate the inflammatory response. Moreover, OLE pretreatment enhanced the survival rate of septic mice. In conclusion, OLE alleviated the inflammatory response to protect against LPS-induced sepsis in mice. The peri-implant soft tissue phenotype (PSP) encompasses the keratinized mucosa width (KMW), mucosal thickness (MT), and supracrestal tissue height (STH). Numerous approaches to augment soft tissue volume around endosseous dental implants have been investigated. To what extent PSP modification is beneficial for peri-implant health has been subject of debate in the field of implant dentistry. The aim of this systematic review was to analyze the evidence regarding the efficacy of soft tissue augmentation procedures aimed at modifying the PSP and their impact on peri-implant health. A comprehensive search was performed to identify clinical studies that involved soft tissue augmentation around dental implants and reported findings on KMW, MT, and/or STH changes. The effect of the intervention on peri-implant health was also assessed. Selected articles were classified based on the general type of surgical approach to increase PSP, either bilaminar or an apically positioned flap (APF) technique. A network meta-TG or ADM obtained the highest amount of MT gain, whereas APF in combination with FGG was the most effective technique for increasing KMW. KMW augmentation via APF was associated with a significant reduction in probing depth, soft tissue dehiscence and plaque index, regardless of the soft tissue grafting material employed, whereas bilaminar techniques with CTG or CM showed beneficial effects on marginal bone level stability. Current patient-reported outcome measures do not adequately capture the impact of spasmodic dysphonia (SD) on communication in daily life situations. The aim of this study was to validate the Communicative Participation Item Bank (CPIB), which specifically measures a disease's impact on daily conversational situations, as an outcome measure for SD. Multi-institutional prospective cohort study. A prospective study was conducted with administration of the 46-question CPIB and the Voice Handicap Index-10 (VHI-10) to 190 participants with SD before (time 1) and 6 weeks after (time 2) botulinum toxin injection. Differential item function (DIF) analyses were performed to examine potential item bias. Paired t-tests were used to assess change in each of the CPIB and VHI-10 scores after treatment. Pearson correlations were calculated between the CPIB and VHI-10. DIF analyses revealed no clinically meaningful difference between the item parameters generated for this SD sample and the original CPIB calibration sample.0 Comentários 0 Compartilhamentos 7 Visualizações 0 AnteriorFaça Login para curtir, compartilhar e comentar! -
From 1994 through 2019, 76 publications on epilepsy-related epidemiologic and surveillance studies were identified. Over the past 25 years, CDC has expanded community, state, and national surveillance on epilepsy and supported epidemiologic studies by using multiple assessment methods and validated case-ascertainment criteria to identify epilepsy burden, epilepsy-related outcomes, and healthcare utilization in the general population or in population subgroups. Among identified research opportunities, studies on epilepsy incidence and risk factors, mortality, and cost are considered as important surveillance gaps. Other remaining gaps and suggested surveillance strategies are also proposed. Findings from this review may help epilepsy researchers and other stakeholders reference and prioritize future activities for epidemiologic and surveillance studies in epilepsy.Rationale and objectives We report the creation of a voluntary research development curriculum for radiology residents at our institution, detailing outcomes after 6 years of existence. Materials and methods We developed a comprehensive Academic and Research Track (ART) curriculum for radiology residents in our department, including mentorship, monthly meetings, didactic curriculum, ongoing evaluation/feedback, protected academic time, and financial support. A literature review identified all indexed publications for our residency graduates from 6 years pre- (2007-2012) to 6 years post-ART (2013-2018) intervention. We also documented career outcomes (academic versus private practice). Summary statistics, Chi-square, and Poisson regression analyses were performed. Results ART group demonstrated significantly greater publication likelihood versus pre-ART predecessors (odds ratio [OR] 3.59, 95% confidence intervals [CI] 1.40-9.19; risk ratios [RR] 1.58, 95% CI 1.19-2.11; p= 0.01), contemporaneous non-ART cohort (OR 3.03, 95% CI 1.12-8.33; RR 1.45, 95% CI 1.08-1.96; p = 0.04), and combined pre-ART plus non-ART group (OR 3.34, 95% CI 1.35-8.22; RR 1.41, 95% CI 0.87-2.29; p = 0.012). In Poisson regression, ART was a significant factor for total, first author, and senior author publications among all graduates and among the subset which remained in academics (all p-values less then 0.05). Estimators were positive in all regressions, indicating a positive effect of ART for increasing numbers of publications. Conclusion ART membership was associated with significantly increased indexed publications. A greater proportion of ART members remained in academics compared to non-ART members, but did not reach statistical significance. We detail our ART structure and curriculum, which may be used as a malleable template for other radiology departments.Ribozymes with modular structures are attractive platforms for the construction of nanoscale RNA objects with biological functions. We designed group I ribozyme dimers as unit ribozyme dimers (Urds), which self-assembled to form their polymeric states and also oligomeric states with defined numbers of Urds. Assembly of Urds yielded catalytic ability of a pair of distinct ribozyme units to cleave two distinct substrates. The morphologies of the assembled ribozyme structures were observed directly by atomic force microscopy (AFM).A gene encoding a dye-linked d-amino acid dehydrogenase (Dye-DADH) homologue was found in a hyperthermophilic archaeon, Sulfurisphaera tokodaii. The predicted amino acid sequence suggested that the gene product is a membrane-bound type enzyme. The gene was overexpressed in Escherichia coli, but the recombinant protein was exclusively produced as an inclusion body. In order to avoid production of the inclusion body, an expression system using the thermoacidophilic archaeon Sulfolobus acidocaldarius instead of E. coli as the host cell was constructed. The gene was successfully expressed in S. acidocaldarius, and its product was purified to homogeneity and characterized. The purified enzyme catalyzed the dehydrogenation of various d-amino acids, with d-phenylalanine being the most preferred substrate. The enzyme retained its full activity after incubation at 90 °C for 30 min and after incubation at pH 4.0-11.0 for 30 min at 50 °C. This is the first report on membrane-bound Dye-DADH from thermophilic archaea that was successfully expressed in an archaeal host.Introduction Relative value units (RVU) are the measure of value used in United States Medicare and Medicaid reimbursement. The Relative Update Committee (RUC) determine physician work RVU (wRVU) based on operative time, technical skill and effort, mental effort and judgement, and stress. In theory, wRVU should account for the complexity and operative time involved in a procedure. Objective The primary aim of this study is to assess if operative time and complexity of hypospadias surgery is adequately accounted for by the current wRVU assignments. Study design The American College of Surgeons National Surgical Quality Improvement Program Participant User File (ACS-NSQIP PUF) database was utilized from 2012 to 2017. Single stage hypospadias current procedural terminology (CPT) codes (including acceptable secondary CPT codes) were extracted. Using total wRVU and total operative time, the primary variable of wRVU per hour was calculated (wRVU/hr). Multivariable linear regression analysis was used to assess the rssion This the first objective assessment of the current wRVU assignments with regards to one stage hypospadias repairs. https://www.selleckchem.com/products/c646.html More complex and longer hypospadias procedures are not adequately compensated by wRVU. Most notably, simple distal procedures are reimbursed at a mean of 19.5 wRVU/hr compared to 13.2 wRVU/hr for one stage proximal repairs. Conclusion This analysis of national-level data suggests that the current wRVU assignments significantly favor shorter and simpler procedures in hypospadias surgery.Dynamic ultrasound scattering allows us to investigate the particle motion and its average size via the time-evolution analysis of the scattering amplitude in optically turbid media. Recently, we proposed a novel particle sizing method that simultaneously analyzes the depth dependences on the sedimentation velocity and the scattered intensity without prior knowledge about the shape of the size distribution (Ultrasonics, 65 (2016) 59-68). In this study, the applicability of the technique to Fluorinert/water dilute and concentrated emulsions (up to 40 vol%) was examined. For the bimodal distribution of the emulsion, the size distribution of the particles was successfully obtained by directly probing the particle motion with different sizes as a function of the sample depth. The validity of the analysis was also investigated by comparing with conventional ultrasonic spectroscopy.
From 1994 through 2019, 76 publications on epilepsy-related epidemiologic and surveillance studies were identified. Over the past 25 years, CDC has expanded community, state, and national surveillance on epilepsy and supported epidemiologic studies by using multiple assessment methods and validated case-ascertainment criteria to identify epilepsy burden, epilepsy-related outcomes, and healthcare utilization in the general population or in population subgroups. Among identified research opportunities, studies on epilepsy incidence and risk factors, mortality, and cost are considered as important surveillance gaps. Other remaining gaps and suggested surveillance strategies are also proposed. Findings from this review may help epilepsy researchers and other stakeholders reference and prioritize future activities for epidemiologic and surveillance studies in epilepsy.Rationale and objectives We report the creation of a voluntary research development curriculum for radiology residents at our institution, detailing outcomes after 6 years of existence. Materials and methods We developed a comprehensive Academic and Research Track (ART) curriculum for radiology residents in our department, including mentorship, monthly meetings, didactic curriculum, ongoing evaluation/feedback, protected academic time, and financial support. A literature review identified all indexed publications for our residency graduates from 6 years pre- (2007-2012) to 6 years post-ART (2013-2018) intervention. We also documented career outcomes (academic versus private practice). Summary statistics, Chi-square, and Poisson regression analyses were performed. Results ART group demonstrated significantly greater publication likelihood versus pre-ART predecessors (odds ratio [OR] 3.59, 95% confidence intervals [CI] 1.40-9.19; risk ratios [RR] 1.58, 95% CI 1.19-2.11; p= 0.01), contemporaneous non-ART cohort (OR 3.03, 95% CI 1.12-8.33; RR 1.45, 95% CI 1.08-1.96; p = 0.04), and combined pre-ART plus non-ART group (OR 3.34, 95% CI 1.35-8.22; RR 1.41, 95% CI 0.87-2.29; p = 0.012). In Poisson regression, ART was a significant factor for total, first author, and senior author publications among all graduates and among the subset which remained in academics (all p-values less then 0.05). Estimators were positive in all regressions, indicating a positive effect of ART for increasing numbers of publications. Conclusion ART membership was associated with significantly increased indexed publications. A greater proportion of ART members remained in academics compared to non-ART members, but did not reach statistical significance. We detail our ART structure and curriculum, which may be used as a malleable template for other radiology departments.Ribozymes with modular structures are attractive platforms for the construction of nanoscale RNA objects with biological functions. We designed group I ribozyme dimers as unit ribozyme dimers (Urds), which self-assembled to form their polymeric states and also oligomeric states with defined numbers of Urds. Assembly of Urds yielded catalytic ability of a pair of distinct ribozyme units to cleave two distinct substrates. The morphologies of the assembled ribozyme structures were observed directly by atomic force microscopy (AFM).A gene encoding a dye-linked d-amino acid dehydrogenase (Dye-DADH) homologue was found in a hyperthermophilic archaeon, Sulfurisphaera tokodaii. The predicted amino acid sequence suggested that the gene product is a membrane-bound type enzyme. The gene was overexpressed in Escherichia coli, but the recombinant protein was exclusively produced as an inclusion body. In order to avoid production of the inclusion body, an expression system using the thermoacidophilic archaeon Sulfolobus acidocaldarius instead of E. coli as the host cell was constructed. The gene was successfully expressed in S. acidocaldarius, and its product was purified to homogeneity and characterized. The purified enzyme catalyzed the dehydrogenation of various d-amino acids, with d-phenylalanine being the most preferred substrate. The enzyme retained its full activity after incubation at 90 °C for 30 min and after incubation at pH 4.0-11.0 for 30 min at 50 °C. This is the first report on membrane-bound Dye-DADH from thermophilic archaea that was successfully expressed in an archaeal host.Introduction Relative value units (RVU) are the measure of value used in United States Medicare and Medicaid reimbursement. The Relative Update Committee (RUC) determine physician work RVU (wRVU) based on operative time, technical skill and effort, mental effort and judgement, and stress. In theory, wRVU should account for the complexity and operative time involved in a procedure. Objective The primary aim of this study is to assess if operative time and complexity of hypospadias surgery is adequately accounted for by the current wRVU assignments. Study design The American College of Surgeons National Surgical Quality Improvement Program Participant User File (ACS-NSQIP PUF) database was utilized from 2012 to 2017. Single stage hypospadias current procedural terminology (CPT) codes (including acceptable secondary CPT codes) were extracted. Using total wRVU and total operative time, the primary variable of wRVU per hour was calculated (wRVU/hr). Multivariable linear regression analysis was used to assess the rssion This the first objective assessment of the current wRVU assignments with regards to one stage hypospadias repairs. https://www.selleckchem.com/products/c646.html More complex and longer hypospadias procedures are not adequately compensated by wRVU. Most notably, simple distal procedures are reimbursed at a mean of 19.5 wRVU/hr compared to 13.2 wRVU/hr for one stage proximal repairs. Conclusion This analysis of national-level data suggests that the current wRVU assignments significantly favor shorter and simpler procedures in hypospadias surgery.Dynamic ultrasound scattering allows us to investigate the particle motion and its average size via the time-evolution analysis of the scattering amplitude in optically turbid media. Recently, we proposed a novel particle sizing method that simultaneously analyzes the depth dependences on the sedimentation velocity and the scattered intensity without prior knowledge about the shape of the size distribution (Ultrasonics, 65 (2016) 59-68). In this study, the applicability of the technique to Fluorinert/water dilute and concentrated emulsions (up to 40 vol%) was examined. For the bimodal distribution of the emulsion, the size distribution of the particles was successfully obtained by directly probing the particle motion with different sizes as a function of the sample depth. The validity of the analysis was also investigated by comparing with conventional ultrasonic spectroscopy.0 Comentários 0 Compartilhamentos 7 Visualizações 0 Anterior -
9, p less then 0.001), not by rsfMRI samples. Simulations using 14 mm radius clusters most resembled rsfMRI networks. When thresholding at p less then 10-4, the SSF-FPR was 0.47. Genes that maximize SF have high global spatial autocorrelation. In conclusion, SSF is unrelated to rsfMRI networks. The main conclusion of Richiardi et al. (2015) is based on a finding that is ∼50% likely to be a false positive, not less then 0.01% as originally reported in the article (Richiardi et al., 2015). We discuss why distance corrections alone and external face validity are insufficient to establish a trustworthy relationship between correlated gene expression measures and rsfMRI networks, and propose more rigorous approaches to preclude common pitfalls in related studies.Background Physiological responses related to manual therapy (MT) treatment have been investigated over decades using various animal models. However, these studies have not been compiled and their collective findings appraised. The purpose of this scoping review was to assess current scientific knowledge on the physiological responses related to MT and/or simulated MT procedures in animal models so as to act as a resource to better inform future mechanistic and clinical research incorporating these therapeutic interventions. Methods PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Cochrane, Embase, and Index of Chiropractic Literature (ICL) were searched from database inception to August 2019. Eligible studies were (a) published in English; (b) non-cadaveric animal-based; (c) original data studies; (d) included a form of MT or simulated MT as treatment; (e) included quantification of at least one delivery parameter of MT treatment; (f) quantification of at least one physiological meacellular response to in vitro simulated massage. Conclusion Pre-clinical research supports an association between MT physiological response and multiple potential short-term MT therapeutic mechanisms. Optimization of MT delivery and/or treatment efficacy will require additional preclinical investigation in which MT delivery parameters are controlled and reported using pathological and/or chronic pain models that mimic neuromusculoskeletal conditions for which MT has demonstrated clinical benefit.Although hearing aids (HAs) are sometimes efficacious in abating tinnitus, the precise mechanism underlying their effect is unclear and predictors of symptom improvement have not been determined. Here, we examined the correlation between the amount of tinnitus improvement and pre-HA quantitative electroencephalography (qEEG) findings to investigate cortical predictors of improvement after wearing HAs. QEEG data of thirty-three patients with debilitating tinnitus were retrospectively correlated with the percentage improvements in tinnitus handicap inventory and the numerical rating scale scores of tinnitus. Activation of brain areas involved in the default mode network (DMN; inferior parietal lobule, parahippocampus, and posterior cingulate cortex) were found to be a negative predictor of improvement in tinnitus-related distress after wearing HAs. In addition, higher pre-HA cortical power at the medial auditory processing system or higher functional connectivity of the lateral/medial auditory pathway to the DMN was found to serve as a positive prognostic indicator with regard to improvement of tinnitus-related distress. In addition, insufficient activity of the pre-treatment noise canceling system tended to be a negative predictor of tinnitus perception improvement after wearing HAs. The current study may serve as a milestone toward a pre-HAs prediction strategy for tinnitus improvements in subjects with hearing loss and severe tinnitus.To evaluate the therapeutic potential of stem cells for neurodegenerative diseases, emphasis should be placed on clarifying the characteristics of the various types of stem cells. Among stem cells, dental pulp stem cells (DPSCs) are a cell population that is rich in cell proliferation and multipotency. It has been reported that transplantation of DPSCs has protective effects against models of neurodegenerative diseases. The protective effects are not only through differentiation into the target cell type for the disease but are also related to trophic factors released from DPSCs. Recently, it has been reported that serum-free culture supernatant of dental pulp stem cell-conditioned medium (DPCM) contains various trophic factors and cytokines and that DPCM is effective for models of neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), and Amyotrophic Lateral Sclerosis (ALS). Moreover, the use of stem cells from human exfoliated deciduous teeth (SHEDs) has been considered. SHEDs are derived from deciduous teeth that have been disposed of as medical waste. SHEDs have higher differentiation capacity and proliferation ability than DPSCs. In addition, the serum-free culture supernatant of SHEDs (SHED-CM) contains more trophic factors, cytokines, and biometals than DPCM and also promotes neuroprotection. The neuroprotective effect of DPSCs, including those from deciduous teeth, will be used as the seeds of therapeutic drugs for neurodegenerative diseases. https://www.selleckchem.com/products/oprozomib-onx-0912.html SHEDs will be used for further cell therapy of neurodegenerative diseases in the future. In this paper, we focused on the characteristics of DPSCs and their potential for neurodegenerative diseases.Hereditary spastic paraplegia (HSP) is a group of inherited disorders characterized by progressive spasticity and paralysis of the lower limbs. Autosomal dominant mutations in SPAST gene account for ∼40% of adult-onset patients. We have previously shown that SPAST patient cells have reduced organelle transport and are therefore more sensitive to oxidative stress. To test whether these effects are present in neuronal cells, we first generated 11 induced pluripotent stem (iPS) cell lines from fibroblasts of three healthy controls and three HSP patients with different SPAST mutations. These cells were differentiated into FOXG1-positive forebrain neurons and then evaluated for multiple aspects of axonal transport and fragmentation. Patient neurons exhibited reduced levels of SPAST encoded spastin, as well as a range of axonal deficits, including reduced levels of stabilized microtubules, lower peroxisome transport speed as a consequence of reduced microtubule-dependent transport, reduced number of peroxisomes, and higher density of axon swellings.
9, p less then 0.001), not by rsfMRI samples. Simulations using 14 mm radius clusters most resembled rsfMRI networks. When thresholding at p less then 10-4, the SSF-FPR was 0.47. Genes that maximize SF have high global spatial autocorrelation. In conclusion, SSF is unrelated to rsfMRI networks. The main conclusion of Richiardi et al. (2015) is based on a finding that is ∼50% likely to be a false positive, not less then 0.01% as originally reported in the article (Richiardi et al., 2015). We discuss why distance corrections alone and external face validity are insufficient to establish a trustworthy relationship between correlated gene expression measures and rsfMRI networks, and propose more rigorous approaches to preclude common pitfalls in related studies.Background Physiological responses related to manual therapy (MT) treatment have been investigated over decades using various animal models. However, these studies have not been compiled and their collective findings appraised. The purpose of this scoping review was to assess current scientific knowledge on the physiological responses related to MT and/or simulated MT procedures in animal models so as to act as a resource to better inform future mechanistic and clinical research incorporating these therapeutic interventions. Methods PubMed, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Cochrane, Embase, and Index of Chiropractic Literature (ICL) were searched from database inception to August 2019. Eligible studies were (a) published in English; (b) non-cadaveric animal-based; (c) original data studies; (d) included a form of MT or simulated MT as treatment; (e) included quantification of at least one delivery parameter of MT treatment; (f) quantification of at least one physiological meacellular response to in vitro simulated massage. Conclusion Pre-clinical research supports an association between MT physiological response and multiple potential short-term MT therapeutic mechanisms. Optimization of MT delivery and/or treatment efficacy will require additional preclinical investigation in which MT delivery parameters are controlled and reported using pathological and/or chronic pain models that mimic neuromusculoskeletal conditions for which MT has demonstrated clinical benefit.Although hearing aids (HAs) are sometimes efficacious in abating tinnitus, the precise mechanism underlying their effect is unclear and predictors of symptom improvement have not been determined. Here, we examined the correlation between the amount of tinnitus improvement and pre-HA quantitative electroencephalography (qEEG) findings to investigate cortical predictors of improvement after wearing HAs. QEEG data of thirty-three patients with debilitating tinnitus were retrospectively correlated with the percentage improvements in tinnitus handicap inventory and the numerical rating scale scores of tinnitus. Activation of brain areas involved in the default mode network (DMN; inferior parietal lobule, parahippocampus, and posterior cingulate cortex) were found to be a negative predictor of improvement in tinnitus-related distress after wearing HAs. In addition, higher pre-HA cortical power at the medial auditory processing system or higher functional connectivity of the lateral/medial auditory pathway to the DMN was found to serve as a positive prognostic indicator with regard to improvement of tinnitus-related distress. In addition, insufficient activity of the pre-treatment noise canceling system tended to be a negative predictor of tinnitus perception improvement after wearing HAs. The current study may serve as a milestone toward a pre-HAs prediction strategy for tinnitus improvements in subjects with hearing loss and severe tinnitus.To evaluate the therapeutic potential of stem cells for neurodegenerative diseases, emphasis should be placed on clarifying the characteristics of the various types of stem cells. Among stem cells, dental pulp stem cells (DPSCs) are a cell population that is rich in cell proliferation and multipotency. It has been reported that transplantation of DPSCs has protective effects against models of neurodegenerative diseases. The protective effects are not only through differentiation into the target cell type for the disease but are also related to trophic factors released from DPSCs. Recently, it has been reported that serum-free culture supernatant of dental pulp stem cell-conditioned medium (DPCM) contains various trophic factors and cytokines and that DPCM is effective for models of neurodegenerative diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), and Amyotrophic Lateral Sclerosis (ALS). Moreover, the use of stem cells from human exfoliated deciduous teeth (SHEDs) has been considered. SHEDs are derived from deciduous teeth that have been disposed of as medical waste. SHEDs have higher differentiation capacity and proliferation ability than DPSCs. In addition, the serum-free culture supernatant of SHEDs (SHED-CM) contains more trophic factors, cytokines, and biometals than DPCM and also promotes neuroprotection. The neuroprotective effect of DPSCs, including those from deciduous teeth, will be used as the seeds of therapeutic drugs for neurodegenerative diseases. https://www.selleckchem.com/products/oprozomib-onx-0912.html SHEDs will be used for further cell therapy of neurodegenerative diseases in the future. In this paper, we focused on the characteristics of DPSCs and their potential for neurodegenerative diseases.Hereditary spastic paraplegia (HSP) is a group of inherited disorders characterized by progressive spasticity and paralysis of the lower limbs. Autosomal dominant mutations in SPAST gene account for ∼40% of adult-onset patients. We have previously shown that SPAST patient cells have reduced organelle transport and are therefore more sensitive to oxidative stress. To test whether these effects are present in neuronal cells, we first generated 11 induced pluripotent stem (iPS) cell lines from fibroblasts of three healthy controls and three HSP patients with different SPAST mutations. These cells were differentiated into FOXG1-positive forebrain neurons and then evaluated for multiple aspects of axonal transport and fragmentation. Patient neurons exhibited reduced levels of SPAST encoded spastin, as well as a range of axonal deficits, including reduced levels of stabilized microtubules, lower peroxisome transport speed as a consequence of reduced microtubule-dependent transport, reduced number of peroxisomes, and higher density of axon swellings.0 Comentários 0 Compartilhamentos 8 Visualizações 0 Anterior -
neering, disease modeling, and drug screening.Treating carotid blowout syndrome following rupture of giant pseudoaneurysms is difficult because the destroyed parent artery precludes conventional treatment. We present a patient with a ruptured giant pseudoaneurysm that we occluded using a modified internal trapping technique with low-concentration N-butyl-2-cyanoacrylate (NBCA) and a minimum number of coils. An 80-year-old man with a history of chemoradiation therapy for oropharyngeal cancer presented with several episodes of active bleeding from the subsequent tracheostomy site. Radiological examination revealed a giant right common carotid artery (CCA) pseudoaneurysm. Endovascular internal trapping was performed using both NBCA and coils under proximal flow control. We slowly injected 9 ml of low-concentration NBCA, which subsequently filled the entire pseudoaneurysm. We then injected an additional 2 ml of NBCA into the proximal CCA to achieve complete obliteration. No re-bleeding was observed during the 6-month follow-up. Endovascular internal trapping using low-concentration NBCA was feasible to treat a giant CCA pseudoaneurysm. The injected low-concentration NBCA filled the entire pseudoaneurysm without the risk of catheter entrapment.
Uretero-arterial fistula (UAF) poses major challenges in management and diagnosis due to the rarity of this condition and associated high morbidity/mortality rates.
We describe a case of a UAF associated with previous aorto-biiliac grafting, ureteric stenting and right nephrectomy because of chronic pielonephritis and complicated by surgical site infection. This case illustrates a very complex pathology, with a challenging diagnosis and multiple treatment options.
A 72 year-old woman was referred to Vilnius Vascular Unit for open UAF repair. The patient had a history of open abdominal aortic aneurysm repair using a bifurcated graft 25 years ago. The right ureter was injured during the operation and a rigid indwelling ureteric stent was inserted. Six months prior to referral, she underwent a right nephrectomy due to a chronic pyelonephritis, complicated by surgical site infection, which was still present at the time of admission. Initial CTA demonstrated bilateral iliac aneurysms, but no signs of UAF. A of this condition may lead to delayed or missed diagnosis which can result in life-threating consequences. A multidisciplinary approach involving urologists, vascular surgeon and radiologist are crucial to both the diagnosis and managment of this rare entity.In this study, we propose a new concept, brand awe, and explore its nature, underlying dimensions, and roles in relation to consumer responses. Brand awe is a specific mixture of emotions that consumers feel when they encounter a luxury or premium brand that they perceive to be vast and, thus, requires a schematic accommodation. Exploratory Factor Analysis (N = 205) and Confirmatory Factor Analysis (N = 256) of the survey data based on fourteen brands yielded three dimensions of brand awe Euphoria, Enthrallment, and Vastness. Results support the reliability and validity of the brand awe construct and the important mediating roles of brand awe between its triggers (i.e., prestige, luxuriousness, excellence, and innovation) and consumer responses.Though rare due to measures and practices to control the risk, infections can occur in research and toxicology studies, especially in nonhuman primates (NHPs) exposed to xenobiotics, particularly immunomodulatory drugs. With such xenobiotics, immunocompromised or immunosuppressed animals will not be able to mount a protective response to infection by an opportunistic pathogen (bacteria, virus, parasite, or fungus) that might otherwise be nonpathogenic and remain clinically asymptomatic in immunocompetent animals. The respiratory tract is one of the most commonly affected systems in clinic, but also in toxicology studies. Pulmonary inflammation will be the main finding associated with opportunistic infections and may cause overt clinical disease with even early sacrifice or death, and may compromise or complicate the pathology evaluation. It is important to properly differentiate the various features of infection, to be aware of the range of possible opportunistic pathogens and how they may impact the interpretation of pathology findings. This review will present the most common bacterial, viral, parasitic, and fungal infections observed in the respiratory tract in NHPs during research and/or toxicology studies.Both juvenile temporal arteritis (JTA) and Kimura's disease are eosinophilic inflammatory conditions but exhibit different clinical manifestations. Here, we describe a case involving a 40-year-old man who developed JTA secondary to Kimura's disease. Approximately 3 years before admission, masses appeared on both posterior auricles. A biopsy of the right posterior auricle mass led to a diagnosis of Kimura's disease. https://www.selleckchem.com/products/chir-98014.html Approximately 4 months before admission, both masses increased in size, and almost simultaneously, the left temporal artery became distended. Histopathology of a biopsy of the left temporal artery revealed inflammatory findings with marked eosinophil infiltration and significant intimal hyperplasia with stenosis of the vascular lumen, indicating JTA. An analysis of the 48 reported cases of JTA, identified in a literature review, and the present case, revealed that Kimura's disease was detected in 6 cases, all of which involved Asians. In conclusion, this case and the literature review suggest that JTA can be accompanied by another eosinophilic inflammation-based disorder, Kimura's disease, particularly in Asians. This newly highlighted relationship between JTA and Kimura's disease could lead to a better understanding of JTA, which is an extremely rare disease.The relationship between affective temperaments and migraine is not well studied to date. It is also uncertain whether some affective temperaments may predispose the migraine patients to major depression (MD). We hypothesized that migraine patients had more affective temperament traits than HCs, and certain affective temperament traits in migraine patients are associated with lifetime MD. The sample included fifty-eight female migraine patients and age-matched 55 healthy women. The migraine was diagnosed according to the third edition of International Classification of Headache Disorders (ICHD-III). Lifetime MD was determined by means of Structured Clinical Interview I for DSM-IV. Migraine Disability Assessment (MIDAS) Questionnaire was applied to participants to determine the impact of migraine on daily life. Affective temperamental traits were assessed through Temperament Evaluation of Memphis, Pisa, Paris and San Diego Auto-questionnaire. All affective temperament traits (p less then .0001) and the rate of MD (p = .
neering, disease modeling, and drug screening.Treating carotid blowout syndrome following rupture of giant pseudoaneurysms is difficult because the destroyed parent artery precludes conventional treatment. We present a patient with a ruptured giant pseudoaneurysm that we occluded using a modified internal trapping technique with low-concentration N-butyl-2-cyanoacrylate (NBCA) and a minimum number of coils. An 80-year-old man with a history of chemoradiation therapy for oropharyngeal cancer presented with several episodes of active bleeding from the subsequent tracheostomy site. Radiological examination revealed a giant right common carotid artery (CCA) pseudoaneurysm. Endovascular internal trapping was performed using both NBCA and coils under proximal flow control. We slowly injected 9 ml of low-concentration NBCA, which subsequently filled the entire pseudoaneurysm. We then injected an additional 2 ml of NBCA into the proximal CCA to achieve complete obliteration. No re-bleeding was observed during the 6-month follow-up. Endovascular internal trapping using low-concentration NBCA was feasible to treat a giant CCA pseudoaneurysm. The injected low-concentration NBCA filled the entire pseudoaneurysm without the risk of catheter entrapment. Uretero-arterial fistula (UAF) poses major challenges in management and diagnosis due to the rarity of this condition and associated high morbidity/mortality rates. We describe a case of a UAF associated with previous aorto-biiliac grafting, ureteric stenting and right nephrectomy because of chronic pielonephritis and complicated by surgical site infection. This case illustrates a very complex pathology, with a challenging diagnosis and multiple treatment options. A 72 year-old woman was referred to Vilnius Vascular Unit for open UAF repair. The patient had a history of open abdominal aortic aneurysm repair using a bifurcated graft 25 years ago. The right ureter was injured during the operation and a rigid indwelling ureteric stent was inserted. Six months prior to referral, she underwent a right nephrectomy due to a chronic pyelonephritis, complicated by surgical site infection, which was still present at the time of admission. Initial CTA demonstrated bilateral iliac aneurysms, but no signs of UAF. A of this condition may lead to delayed or missed diagnosis which can result in life-threating consequences. A multidisciplinary approach involving urologists, vascular surgeon and radiologist are crucial to both the diagnosis and managment of this rare entity.In this study, we propose a new concept, brand awe, and explore its nature, underlying dimensions, and roles in relation to consumer responses. Brand awe is a specific mixture of emotions that consumers feel when they encounter a luxury or premium brand that they perceive to be vast and, thus, requires a schematic accommodation. Exploratory Factor Analysis (N = 205) and Confirmatory Factor Analysis (N = 256) of the survey data based on fourteen brands yielded three dimensions of brand awe Euphoria, Enthrallment, and Vastness. Results support the reliability and validity of the brand awe construct and the important mediating roles of brand awe between its triggers (i.e., prestige, luxuriousness, excellence, and innovation) and consumer responses.Though rare due to measures and practices to control the risk, infections can occur in research and toxicology studies, especially in nonhuman primates (NHPs) exposed to xenobiotics, particularly immunomodulatory drugs. With such xenobiotics, immunocompromised or immunosuppressed animals will not be able to mount a protective response to infection by an opportunistic pathogen (bacteria, virus, parasite, or fungus) that might otherwise be nonpathogenic and remain clinically asymptomatic in immunocompetent animals. The respiratory tract is one of the most commonly affected systems in clinic, but also in toxicology studies. Pulmonary inflammation will be the main finding associated with opportunistic infections and may cause overt clinical disease with even early sacrifice or death, and may compromise or complicate the pathology evaluation. It is important to properly differentiate the various features of infection, to be aware of the range of possible opportunistic pathogens and how they may impact the interpretation of pathology findings. This review will present the most common bacterial, viral, parasitic, and fungal infections observed in the respiratory tract in NHPs during research and/or toxicology studies.Both juvenile temporal arteritis (JTA) and Kimura's disease are eosinophilic inflammatory conditions but exhibit different clinical manifestations. Here, we describe a case involving a 40-year-old man who developed JTA secondary to Kimura's disease. Approximately 3 years before admission, masses appeared on both posterior auricles. A biopsy of the right posterior auricle mass led to a diagnosis of Kimura's disease. https://www.selleckchem.com/products/chir-98014.html Approximately 4 months before admission, both masses increased in size, and almost simultaneously, the left temporal artery became distended. Histopathology of a biopsy of the left temporal artery revealed inflammatory findings with marked eosinophil infiltration and significant intimal hyperplasia with stenosis of the vascular lumen, indicating JTA. An analysis of the 48 reported cases of JTA, identified in a literature review, and the present case, revealed that Kimura's disease was detected in 6 cases, all of which involved Asians. In conclusion, this case and the literature review suggest that JTA can be accompanied by another eosinophilic inflammation-based disorder, Kimura's disease, particularly in Asians. This newly highlighted relationship between JTA and Kimura's disease could lead to a better understanding of JTA, which is an extremely rare disease.The relationship between affective temperaments and migraine is not well studied to date. It is also uncertain whether some affective temperaments may predispose the migraine patients to major depression (MD). We hypothesized that migraine patients had more affective temperament traits than HCs, and certain affective temperament traits in migraine patients are associated with lifetime MD. The sample included fifty-eight female migraine patients and age-matched 55 healthy women. The migraine was diagnosed according to the third edition of International Classification of Headache Disorders (ICHD-III). Lifetime MD was determined by means of Structured Clinical Interview I for DSM-IV. Migraine Disability Assessment (MIDAS) Questionnaire was applied to participants to determine the impact of migraine on daily life. Affective temperamental traits were assessed through Temperament Evaluation of Memphis, Pisa, Paris and San Diego Auto-questionnaire. All affective temperament traits (p less then .0001) and the rate of MD (p = .0 Comentários 0 Compartilhamentos 8 Visualizações 0 Anterior -
cacious "research intervention" into an effective intervention within 'real-world' clinical and non-clinical community settings. However, scale-up has been a gradual process requiring on-going, dedicated resources over 5 years by a national network of Academic Health Science Networks (AHSNs). Whilst the collection of monitoring and evaluation data is critical in understanding implementation and scale-up, there remain significant challenges in developing systems sufficiently rigorous, proportionate and locally acceptable.
Implementation science (IS) has the potential to serve an important role in encouraging the successful uptake of evidence-based interventions. The current state of IS awareness and engagement among health researchers, however, is relatively unknown.
To determine IS awareness and engagement among health researchers, we performed an online survey of health researchers in the USA in 2018. Basic science researchers were excluded from the sample. Engagement in and awareness of IS were measured with multiple questionnaire items that both directly and indirectly ask about IS methods used. Unrecognized IS engagement was defined as participating in research using IS elements and not indicating IS as a research method used. We performed simple logistic regressions and tested multivariable logistic regression models of researcher characteristics as predictors of IS engagement.
Of the 1767 health researchers who completed the survey, 68% stated they would be able to describe IS. Only 12.7% of the population self-identified as using IS methods. Of the researchers not self-identifying as using IS methods, 86.4% reported using the IS elements "at least some of the time." Nearly half (47.9%) reported using process/implementation evaluation, 89.2% use IS measures, 27.3% use IS frameworks, and 75.6% investigate or examine ways to integrate interventions into routine health settings. IS awareness significantly reduced the likelihood of all measures of unrecognized IS engagement (aOR 0.13, 95% CI 0.07 to 0.27,
< 0.001).
Overall, awareness of IS is high among health researchers, yet there is also a high prevalence of unrecognized IS engagement. Efforts are needed to further disseminate what constitutes IS research and increase IS awareness among health researchers.
Overall, awareness of IS is high among health researchers, yet there is also a high prevalence of unrecognized IS engagement. Efforts are needed to further disseminate what constitutes IS research and increase IS awareness among health researchers.
As technology has become cheaper and more accessible, health programs are adopting digital health interventions (DHI) to improve the provision of and demand for health services. These interventions are complex and require strong coordination and support across different health system levels and government departments, and they need significant capacities in technology and information to be properly implemented. Electronic immunization registries (EIRs) are types of DHI used to capture, store, access, and share individual-level, longitudinal health information in digitized records. The BID Initiative worked in partnership with the governments of Tanzania and Zambia to introduce an EIR at the sub-national level in both countries within 5 years as part of a multi-component complex intervention package focusing on data use capacity-building.
We aimed to gather and describe learnings from the BID experience by conducting a framework-based mixedmethods study to describe perceptions of factors that influenced sclementation.
Organizations deploying DHIs in the future should consider how best to adapt their intervention to the existing ecosystem, including human resources and organizational capacity, as well as the changing technological landscape during planning and implementation.
Despite increasing access to antiretroviral therapy (ART), the proportion of eligible patients initiated on treatment remains suboptimal. Only 64.6% of the people living with HIV (PLHIV) globally were initiated on ART by June 2019. The streamlined ART (START-ART) implementation study was based on the PRECEDE model, which suggests that "predisposing, enabling, and reinforcing" factors are needed to create behavior change. START-ART increased ART initiation within 2 weeks of eligibility by 42%. However, the gains from some implementation interventions erode over time. https://www.selleckchem.com/products/tegatrabetan.html We evaluated facilitators and barriers to sustainability of this streamlined ART initiation in the year following the implementation period.
We designed a mixed-methods explanatory sequential study to examine the sustainability of START-ART implementation. Quantitative component consisted of cross-sectional patient chart reviews of routinely collected data; qualitative component consisted of key informant interviews of health workers in START-three specific barriers lack of training after the intervention, transfer of trained staff to other health facilities, and shortage of supplies like cartridges for POC CD4 PIMA machine.
Rapid ART initiation was sustained in most health centers. Skills acquired during the intervention and functional POC CD4 machine facilitated while staff transfers and irregular laboratory supplies were barriers to sustainability of rapid ART initiation.
Rapid ART initiation was sustained in most health centers. Skills acquired during the intervention and functional POC CD4 machine facilitated while staff transfers and irregular laboratory supplies were barriers to sustainability of rapid ART initiation.
Rural Veterans who receive inpatient care at a Veterans Health Administration (VA) tertiary facility can face significant barriers to a safe transition home. The VA rural Transitions Nurse Program (TNP) is a national, intensive care coordination quality improvement program for rural Veterans. To communicate the reach of TNP into rural communities, we developed geographic information system (GIS) maps. This study evaluated TNP transitions nurse and site champion perceptions of GIS as a communication tool for illustrating the reach of TNP into rural communities.
Using residence information for TNP enrollees, we built GIS maps using ArcGIS Enterprise, a mapping and analytics platform. Residential addresses were matched to Rural-Urban Commuting Area geographical categories. Transitions nurse and site champion perceptions of the local and national GIS maps were assessed through surveys and interviews. The data were analyzed using descriptive and content analytic methods to identify themes.
Transitions nurses and site champions perceived GIS maps as a valuable, easy to understand, acceptable, and appropriate communication tool to illustrate the reach of TNP into rural communities.
cacious "research intervention" into an effective intervention within 'real-world' clinical and non-clinical community settings. However, scale-up has been a gradual process requiring on-going, dedicated resources over 5 years by a national network of Academic Health Science Networks (AHSNs). Whilst the collection of monitoring and evaluation data is critical in understanding implementation and scale-up, there remain significant challenges in developing systems sufficiently rigorous, proportionate and locally acceptable. Implementation science (IS) has the potential to serve an important role in encouraging the successful uptake of evidence-based interventions. The current state of IS awareness and engagement among health researchers, however, is relatively unknown. To determine IS awareness and engagement among health researchers, we performed an online survey of health researchers in the USA in 2018. Basic science researchers were excluded from the sample. Engagement in and awareness of IS were measured with multiple questionnaire items that both directly and indirectly ask about IS methods used. Unrecognized IS engagement was defined as participating in research using IS elements and not indicating IS as a research method used. We performed simple logistic regressions and tested multivariable logistic regression models of researcher characteristics as predictors of IS engagement. Of the 1767 health researchers who completed the survey, 68% stated they would be able to describe IS. Only 12.7% of the population self-identified as using IS methods. Of the researchers not self-identifying as using IS methods, 86.4% reported using the IS elements "at least some of the time." Nearly half (47.9%) reported using process/implementation evaluation, 89.2% use IS measures, 27.3% use IS frameworks, and 75.6% investigate or examine ways to integrate interventions into routine health settings. IS awareness significantly reduced the likelihood of all measures of unrecognized IS engagement (aOR 0.13, 95% CI 0.07 to 0.27, < 0.001). Overall, awareness of IS is high among health researchers, yet there is also a high prevalence of unrecognized IS engagement. Efforts are needed to further disseminate what constitutes IS research and increase IS awareness among health researchers. Overall, awareness of IS is high among health researchers, yet there is also a high prevalence of unrecognized IS engagement. Efforts are needed to further disseminate what constitutes IS research and increase IS awareness among health researchers. As technology has become cheaper and more accessible, health programs are adopting digital health interventions (DHI) to improve the provision of and demand for health services. These interventions are complex and require strong coordination and support across different health system levels and government departments, and they need significant capacities in technology and information to be properly implemented. Electronic immunization registries (EIRs) are types of DHI used to capture, store, access, and share individual-level, longitudinal health information in digitized records. The BID Initiative worked in partnership with the governments of Tanzania and Zambia to introduce an EIR at the sub-national level in both countries within 5 years as part of a multi-component complex intervention package focusing on data use capacity-building. We aimed to gather and describe learnings from the BID experience by conducting a framework-based mixedmethods study to describe perceptions of factors that influenced sclementation. Organizations deploying DHIs in the future should consider how best to adapt their intervention to the existing ecosystem, including human resources and organizational capacity, as well as the changing technological landscape during planning and implementation. Despite increasing access to antiretroviral therapy (ART), the proportion of eligible patients initiated on treatment remains suboptimal. Only 64.6% of the people living with HIV (PLHIV) globally were initiated on ART by June 2019. The streamlined ART (START-ART) implementation study was based on the PRECEDE model, which suggests that "predisposing, enabling, and reinforcing" factors are needed to create behavior change. START-ART increased ART initiation within 2 weeks of eligibility by 42%. However, the gains from some implementation interventions erode over time. https://www.selleckchem.com/products/tegatrabetan.html We evaluated facilitators and barriers to sustainability of this streamlined ART initiation in the year following the implementation period. We designed a mixed-methods explanatory sequential study to examine the sustainability of START-ART implementation. Quantitative component consisted of cross-sectional patient chart reviews of routinely collected data; qualitative component consisted of key informant interviews of health workers in START-three specific barriers lack of training after the intervention, transfer of trained staff to other health facilities, and shortage of supplies like cartridges for POC CD4 PIMA machine. Rapid ART initiation was sustained in most health centers. Skills acquired during the intervention and functional POC CD4 machine facilitated while staff transfers and irregular laboratory supplies were barriers to sustainability of rapid ART initiation. Rapid ART initiation was sustained in most health centers. Skills acquired during the intervention and functional POC CD4 machine facilitated while staff transfers and irregular laboratory supplies were barriers to sustainability of rapid ART initiation. Rural Veterans who receive inpatient care at a Veterans Health Administration (VA) tertiary facility can face significant barriers to a safe transition home. The VA rural Transitions Nurse Program (TNP) is a national, intensive care coordination quality improvement program for rural Veterans. To communicate the reach of TNP into rural communities, we developed geographic information system (GIS) maps. This study evaluated TNP transitions nurse and site champion perceptions of GIS as a communication tool for illustrating the reach of TNP into rural communities. Using residence information for TNP enrollees, we built GIS maps using ArcGIS Enterprise, a mapping and analytics platform. Residential addresses were matched to Rural-Urban Commuting Area geographical categories. Transitions nurse and site champion perceptions of the local and national GIS maps were assessed through surveys and interviews. The data were analyzed using descriptive and content analytic methods to identify themes. Transitions nurses and site champions perceived GIS maps as a valuable, easy to understand, acceptable, and appropriate communication tool to illustrate the reach of TNP into rural communities.0 Comentários 0 Compartilhamentos 8 Visualizações 0 Anterior -
NGS revealed TP53 as the most frequently mutated gene. The rate of HER2 positive cases and MSI-H cases were 9.5% (4/42) and 12.2% (5/41), respectively. Among these 42 cases, there was no molecular and clinicopathological differences according to the presence of tumor cells with clear cytoplasm. Enteroblastic marker-positive CRC could be grouped together as CAED regardless of clear cell cytoplasm. By this definition, the frequency of CAED is 4.0%, and it has a poorer prognosis than that for conventional CRCs. HER2 targeting therapy would be a meaningful treatment for CAED, and CAEDs contain both MSI-H and MSI-stable CRCs, although MSS phenotype is dominant.In this study, methacrylation of alginate was carried out by reacting sodium alginate with methacrylic anhydride in the presence of sodium hydroxide (NaOH). Separately synthesized nano-hydroxyapatite (n-HA) powder was surface functionalized using mercaptopropionic acid (MPA) and EGMP (Ethylene Glycol Methacrylate Phosphate) in the presence of Azobisisobutyronitrile benzene (AIBN) as a free radical initiator in a nitrogen atmosphere. Methacrylated alginate solution was mixed with the required amount of surface functionalized HAp nanoparticles in the presence of 0.05% irgacure as photoinitiator and was placed at the centre ofa 8 KW of UV light source of 265 nm to prepare photocrosslinked bone paste.XRD analysis indicated that surface functionalization did not alter phase purity of hydroxyapatite nanopowder in the prepared paste. The graft polymerization of EGMP on the surface of HAp was confirmed by the presence of 1732 cm-1 band which belongs to C=O stretching of EGMP, in addition to the characteristic peaks of nano HAp and alginate in the composite paste. Storage modulus and loss modulus of all the prepared pastes increased non-linearly with time upto 100s exhibiting its pseudo plastic behaviour. The rate of release of BMP2 was significantly faster in the first few days, and the release curve gradually levelled off prior to slowing down upto 22 days. Mesenchymal stem cell adhesion studies revealed that cells could attach to the paste material and stretch over the surface of the material after 14days of incubation. MTT assay showed that prepared paste materials were conducive to mesenchymal stem cells attachment and proliferation. Immunocytochemistry analysis revealed that addition of surface functionalized nano HAp and BMP2 to alginate hydrogel enhanced osteogenic potential of the prepared paste. The result indicated that the newly developed photocrosslinked paste may be physically and biologically suitable for application as bone filler.Fuchs endothelial corneal dystrophy (FECD) is the most common primary corneal endothelial dystrophy and the leading indication for corneal transplantation worldwide. FECD is characterized by the progressive decline of corneal endothelial cells (CECs) and the formation of extracellular matrix (ECM) excrescences in Descemet's membrane (DM), called guttae, that lead to corneal edema and loss of vision. FECD typically manifests in the fifth decades of life and has a greater incidence in women. https://www.selleckchem.com/products/CP-673451.html FECD is a complex and heterogeneous genetic disease where interaction between genetic and environmental factors results in cellular apoptosis and aberrant ECM deposition. In this review, we will discuss a complex interplay of genetic, epigenetic, and exogenous factors in inciting oxidative stress, auto(mito)phagy, unfolded protein response, and mitochondrial dysfunction during CEC degeneration. Specifically, we explore the factors that influence cellular fate to undergo apoptosis, senescence, and endothelial-to-mesenchymal transition. These findings will highlight the importance of abnormal CEC-DM interactions in triggering the vicious cycle of FECD pathogenesis. We will also review clinical characteristics, diagnostic tools, and current medical and surgical management options for FECD patients. These new paradigms in FECD pathogenesis present an opportunity to develop novel therapeutics for the treatment of FECD.Background Malignant mesothelioma is an aggressive cancer and has a poor prognosis. Here, we analyzed the feasibility, molecular and gender aspects of targeted therapy recommendations for malignant mesothelioma based on the individual molecular tumor profile. Methods In this single-center, real-world retrospective analysis of our platform for precision medicine, we evaluated the molecular profiling of malignant mesothelioma in 14 patients, including nine men and five women. Tumor samples of the patients were examined with a 50 gene next-generation sequencing (NGS) panel, immunohistochemistry, and fluorescence in situ hybridization, to detect possible molecular aberrations which may be targeted by off-label therapy custom-tailored to the individual patient. Results In total, we identified 11 mutations in six of the 14 patients, including BAP1, FANCA, NF1, NF2, PD-L1, RAD52D, SETD2, SRC, and TP53. No mutation was detected in eight of the 14 patients. Targeted therapy was recommended for 11 out of the 14 patients. All recommendations were mainly based on the molecular characteristics determined by immunohistochemistry. Targeted therapy recommendations were significantly more often for men than women due to gender-specific differences in PDGFRα expression. Eventually, four patients received the targeted therapy, of whom one patient subsequently achieved stable disease. Conclusions Our observations suggest that a molecular-guided treatment approach is feasible for the management of advanced malignant mesothelioma. Our analysis revealed gender specific differences in PDGFRα expression that should be further evaluated in clinical trials.The recent outbreak of coronavirus disease 2019 (COVID-19), triggered by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses an enormous threat to global public health and economies. Human coronaviruses normally cause no or mild respiratory disease but in the past two decades, potentially fatal coronavirus infections have emerged, causing respiratory tract illnesses such as pneumonia and bronchitis. These include severe acute respiratory syndrome coronavirus (SARS-CoV), followed by the Middle East respiratory syndrome coronavirus (MERS-CoV), and recently the SARS-CoV-2 coronavirus outbreak which emerged in Wuhan, China, in December 2019. Currently, most COVID-19 patients receive traditional supportive care including breathing assistance. To halt the ongoing spread of the pandemic SARS-CoV-2 coronavirus and rescue individual patients, established drugs and new therapies are under evaluation. Since it will be some time until a safe and effective vaccine will be available, the immediate priority is to harness innate immunity to accelerate early antiviral immune responses.
NGS revealed TP53 as the most frequently mutated gene. The rate of HER2 positive cases and MSI-H cases were 9.5% (4/42) and 12.2% (5/41), respectively. Among these 42 cases, there was no molecular and clinicopathological differences according to the presence of tumor cells with clear cytoplasm. Enteroblastic marker-positive CRC could be grouped together as CAED regardless of clear cell cytoplasm. By this definition, the frequency of CAED is 4.0%, and it has a poorer prognosis than that for conventional CRCs. HER2 targeting therapy would be a meaningful treatment for CAED, and CAEDs contain both MSI-H and MSI-stable CRCs, although MSS phenotype is dominant.In this study, methacrylation of alginate was carried out by reacting sodium alginate with methacrylic anhydride in the presence of sodium hydroxide (NaOH). Separately synthesized nano-hydroxyapatite (n-HA) powder was surface functionalized using mercaptopropionic acid (MPA) and EGMP (Ethylene Glycol Methacrylate Phosphate) in the presence of Azobisisobutyronitrile benzene (AIBN) as a free radical initiator in a nitrogen atmosphere. Methacrylated alginate solution was mixed with the required amount of surface functionalized HAp nanoparticles in the presence of 0.05% irgacure as photoinitiator and was placed at the centre ofa 8 KW of UV light source of 265 nm to prepare photocrosslinked bone paste.XRD analysis indicated that surface functionalization did not alter phase purity of hydroxyapatite nanopowder in the prepared paste. The graft polymerization of EGMP on the surface of HAp was confirmed by the presence of 1732 cm-1 band which belongs to C=O stretching of EGMP, in addition to the characteristic peaks of nano HAp and alginate in the composite paste. Storage modulus and loss modulus of all the prepared pastes increased non-linearly with time upto 100s exhibiting its pseudo plastic behaviour. The rate of release of BMP2 was significantly faster in the first few days, and the release curve gradually levelled off prior to slowing down upto 22 days. Mesenchymal stem cell adhesion studies revealed that cells could attach to the paste material and stretch over the surface of the material after 14days of incubation. MTT assay showed that prepared paste materials were conducive to mesenchymal stem cells attachment and proliferation. Immunocytochemistry analysis revealed that addition of surface functionalized nano HAp and BMP2 to alginate hydrogel enhanced osteogenic potential of the prepared paste. The result indicated that the newly developed photocrosslinked paste may be physically and biologically suitable for application as bone filler.Fuchs endothelial corneal dystrophy (FECD) is the most common primary corneal endothelial dystrophy and the leading indication for corneal transplantation worldwide. FECD is characterized by the progressive decline of corneal endothelial cells (CECs) and the formation of extracellular matrix (ECM) excrescences in Descemet's membrane (DM), called guttae, that lead to corneal edema and loss of vision. FECD typically manifests in the fifth decades of life and has a greater incidence in women. https://www.selleckchem.com/products/CP-673451.html FECD is a complex and heterogeneous genetic disease where interaction between genetic and environmental factors results in cellular apoptosis and aberrant ECM deposition. In this review, we will discuss a complex interplay of genetic, epigenetic, and exogenous factors in inciting oxidative stress, auto(mito)phagy, unfolded protein response, and mitochondrial dysfunction during CEC degeneration. Specifically, we explore the factors that influence cellular fate to undergo apoptosis, senescence, and endothelial-to-mesenchymal transition. These findings will highlight the importance of abnormal CEC-DM interactions in triggering the vicious cycle of FECD pathogenesis. We will also review clinical characteristics, diagnostic tools, and current medical and surgical management options for FECD patients. These new paradigms in FECD pathogenesis present an opportunity to develop novel therapeutics for the treatment of FECD.Background Malignant mesothelioma is an aggressive cancer and has a poor prognosis. Here, we analyzed the feasibility, molecular and gender aspects of targeted therapy recommendations for malignant mesothelioma based on the individual molecular tumor profile. Methods In this single-center, real-world retrospective analysis of our platform for precision medicine, we evaluated the molecular profiling of malignant mesothelioma in 14 patients, including nine men and five women. Tumor samples of the patients were examined with a 50 gene next-generation sequencing (NGS) panel, immunohistochemistry, and fluorescence in situ hybridization, to detect possible molecular aberrations which may be targeted by off-label therapy custom-tailored to the individual patient. Results In total, we identified 11 mutations in six of the 14 patients, including BAP1, FANCA, NF1, NF2, PD-L1, RAD52D, SETD2, SRC, and TP53. No mutation was detected in eight of the 14 patients. Targeted therapy was recommended for 11 out of the 14 patients. All recommendations were mainly based on the molecular characteristics determined by immunohistochemistry. Targeted therapy recommendations were significantly more often for men than women due to gender-specific differences in PDGFRα expression. Eventually, four patients received the targeted therapy, of whom one patient subsequently achieved stable disease. Conclusions Our observations suggest that a molecular-guided treatment approach is feasible for the management of advanced malignant mesothelioma. Our analysis revealed gender specific differences in PDGFRα expression that should be further evaluated in clinical trials.The recent outbreak of coronavirus disease 2019 (COVID-19), triggered by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses an enormous threat to global public health and economies. Human coronaviruses normally cause no or mild respiratory disease but in the past two decades, potentially fatal coronavirus infections have emerged, causing respiratory tract illnesses such as pneumonia and bronchitis. These include severe acute respiratory syndrome coronavirus (SARS-CoV), followed by the Middle East respiratory syndrome coronavirus (MERS-CoV), and recently the SARS-CoV-2 coronavirus outbreak which emerged in Wuhan, China, in December 2019. Currently, most COVID-19 patients receive traditional supportive care including breathing assistance. To halt the ongoing spread of the pandemic SARS-CoV-2 coronavirus and rescue individual patients, established drugs and new therapies are under evaluation. Since it will be some time until a safe and effective vaccine will be available, the immediate priority is to harness innate immunity to accelerate early antiviral immune responses.0 Comentários 0 Compartilhamentos 10 Visualizações 0 Anterior -
Pre-treatment of neuronal cells with 7-geranyloxycinnamic acid significantly protected the differentiated SH-SY5Y cells against H2O2-induced apoptosis. Cytoskeleton and cytoplasmic inclusion were similarly protected by the 7-geranyloxycinnamic acid treatment. The present findings demonstrate the neuroprotective potential of 7-geranyloxycinnamic acid against H2O2-induced neurotoxicity in neuronal cells, which is an established hallmark of neuronal disorders.Chlorophyll plays an essential role in photosynthetic light harvesting and energy transduction in green tissues of higher plants and is closely related to photosynthesis and crop yield. Identification of transcription factors (TFs) involved in regulating chlorophyll biosynthesis is still limited in soybean (Glycine max), and the previously identified GmGATA58 is suggested to potentially modulate chlorophyll and nitrogen metabolisms, but its complete function is still unknown. In this study, subcellular localization assay showed that GmGATA58 was localized in the nucleus. Histochemical GUS assay and qPCR assay indicated that GmGATA58 was mainly expressed in leaves and responded to nitrogen, light and phytohormone treatments. Overexpression of GmGATA58 in the Arabidopsis thaliana ortholog AtGATA21 (gnc) mutant complemented the greening defect, while overexpression in Arabidopsis wild-type led to increasing chlorophyll content in leaves through up-regulating the expression levels of the large of chlorophyll biosynthetic pathway genes, but suppressing plant growth and yield, although the net photosynthetic rate was slightly improved. Dual-luciferase reporter assay also supported that GmGATA58 activated the transcription activities of three promoters of key chlorophyll biosynthetic genes of soybean in transformed protoplast of Arabidopsis. It is concluded that GmGATA58 played an important role in regulating chlorophyll biosynthesis, but suppressed plant growth and yield in transgenic Arabidopsis.Pseudomonas aeruginosa is a Gram-negative pathogenic bacterium that is present commonly in soil and water and is responsible for causing septic shock, pneumonia, urinary tract and gastrointestinal infections, etc. The multi-drug resistance (MDR) phenomenon has increased dramatically in past years and is now considered a major threat globally, so there is an urgent need to develop new strategies to overcome drug resistance by P. aeruginosa. In P. aeruginosa, a major factor of drug resistance is associated to the formation of biofilms by the LasR enzyme, which regulates quorum sensing and has been reported as a new therapeutic target for designing novel antibacterial molecules. In this study, virtual screening and molecular docking were performed against the ligand binding domain (LBD) of LasR by employing a pharmacophore hypothesis for the screening of 2373 FDA-approved compounds to filter top-scoring hit compounds. Six inhibitors out of 2373 compounds were found to have binding affinities close to that of known LasR inhibitors. The binding modes of these compounds to the binding site in LasR-LBD were analyzed to identify the key interactions that contribute to the inhibition of LasR activity. Then, 50 ns simulations of top hit compounds were performed to elucidate the stability of their binding conformations with the LasR-LBD. This study, thus concluded that sulfamerazine showed the highest binding affinity for the LasR-LBD binding pocket exhibiting strong inhibitory binding interactions during molecular dynamics (MD) simulation.Enteroviruses are common causes of infections of the central nervous system (CNS) that in temperate climates tend to peak in the summer. The aim of the study was to describe epidemiology, drivers of seasonality, and types of enteroviruses causing infections of the CNS in children in Northeastern Poland. We prospectively collected data on children hospitalized with infection of the CNS attributed to enteroviruses in Bialystok, Poland, from January 2015 to December 2019. In total, 224 children were included. Nineteen different enterovirus types were identified in isolates collected from 188 children. https://www.selleckchem.com/products/mlt-748.html Coxsackie B5 (32%), echovirus 30 (20%), and echovirus 6 (14%) were the three most common types. Enteroviruses were more prevalent during the summer-fall season. Infections caused by echovirus 30 peaked early in June and coxsackievirus B5 in July, whereas echovirus 6 peaked late in October. Phylogenetic analyses of these three enterovirus types showed multiple lineages co-circulating in this region. Mean air temperatures and precipitation rates were independently associated with monthly number of cases. Considering lack of effective treatment or vaccine, easy transmission of enteroviruses between susceptible individuals, their high mutation rate and prolonged time of viral shedding, continued monitoring and surveillance are imperative to recognize enteroviral infections of the CNS and the changes in circulation of enteroviruses in Poland.In this work a novel bimetallic nickel oxide/copper oxide metal-organic framework (NiO/CuO MOF) has been developed by using two linkers Benzene Dicarboxylic acid (BDC) and Pyrazine. The composites of NiO/CuO MOF with different amounts of reduced graphene oxide (rGO) were synthesized through a hydrothermal method and subsequently characterized by multiple significant techniques like XRD, SEM, EDX, FTIR and Raman IR for an investigation of their structural and morphological properties. The prepared series of material was later employed for electrochemical oxidation of methanol, tested by cyclic voltammetry (CV) in basic medium on a modified glassy carbon electrode (GCE). The electrochemical response depicts that increasing concentration of rGO enhances the electrocatalytic activity of the catalyst for methanol oxidation reaction (MOR). The catalyzed oxidation reaction of methanol by NiO/CuO MOF and rGO-NiO/CuO MOF composites give a superlative current density of 437. 28 mA/cm2 at 0.9 V potential at 50 mV/s scan rate. This activity makes it a promising catalytic material for electrolysis of methanol in direct methanol fuel cell (DMFC).Antibacterial antibiotic therapy has played an important role in the treatment of bacterial infections for almost a century. The increasing resistance of pathogenic bacteria to antibiotics leads to an attempt to use previously neglected antibacterial therapies. Here we provide information on the two recombinantly modified antistaphylococcal enzymes derived from lysostaphin (LYSSTAPH-S) and endolysin (LYSDERM-S) derived from kayvirus 812F1 whose target sites reside in the bacterial cell wall. LYSSTAPH-S showed a stable antimicrobial effect over 24-h testing, even in concentrations lower than 1 µg/mL across a wide variety of epidemiologically important sequence types (STs) of methicillin-resistant Staphylococcus aureus (MRSA), especially in the stationary phase of growth (status comparable to chronic infections). LYSDERM-S showed a less potent antimicrobial effect that lasted only a few hours at concentrations of 15 μg/mL and higher. Our data indicate that these antimicrobial enzymes could be of substantial help in the treatment of chronic MRSA wound infections.
Pre-treatment of neuronal cells with 7-geranyloxycinnamic acid significantly protected the differentiated SH-SY5Y cells against H2O2-induced apoptosis. Cytoskeleton and cytoplasmic inclusion were similarly protected by the 7-geranyloxycinnamic acid treatment. The present findings demonstrate the neuroprotective potential of 7-geranyloxycinnamic acid against H2O2-induced neurotoxicity in neuronal cells, which is an established hallmark of neuronal disorders.Chlorophyll plays an essential role in photosynthetic light harvesting and energy transduction in green tissues of higher plants and is closely related to photosynthesis and crop yield. Identification of transcription factors (TFs) involved in regulating chlorophyll biosynthesis is still limited in soybean (Glycine max), and the previously identified GmGATA58 is suggested to potentially modulate chlorophyll and nitrogen metabolisms, but its complete function is still unknown. In this study, subcellular localization assay showed that GmGATA58 was localized in the nucleus. Histochemical GUS assay and qPCR assay indicated that GmGATA58 was mainly expressed in leaves and responded to nitrogen, light and phytohormone treatments. Overexpression of GmGATA58 in the Arabidopsis thaliana ortholog AtGATA21 (gnc) mutant complemented the greening defect, while overexpression in Arabidopsis wild-type led to increasing chlorophyll content in leaves through up-regulating the expression levels of the large of chlorophyll biosynthetic pathway genes, but suppressing plant growth and yield, although the net photosynthetic rate was slightly improved. Dual-luciferase reporter assay also supported that GmGATA58 activated the transcription activities of three promoters of key chlorophyll biosynthetic genes of soybean in transformed protoplast of Arabidopsis. It is concluded that GmGATA58 played an important role in regulating chlorophyll biosynthesis, but suppressed plant growth and yield in transgenic Arabidopsis.Pseudomonas aeruginosa is a Gram-negative pathogenic bacterium that is present commonly in soil and water and is responsible for causing septic shock, pneumonia, urinary tract and gastrointestinal infections, etc. The multi-drug resistance (MDR) phenomenon has increased dramatically in past years and is now considered a major threat globally, so there is an urgent need to develop new strategies to overcome drug resistance by P. aeruginosa. In P. aeruginosa, a major factor of drug resistance is associated to the formation of biofilms by the LasR enzyme, which regulates quorum sensing and has been reported as a new therapeutic target for designing novel antibacterial molecules. In this study, virtual screening and molecular docking were performed against the ligand binding domain (LBD) of LasR by employing a pharmacophore hypothesis for the screening of 2373 FDA-approved compounds to filter top-scoring hit compounds. Six inhibitors out of 2373 compounds were found to have binding affinities close to that of known LasR inhibitors. The binding modes of these compounds to the binding site in LasR-LBD were analyzed to identify the key interactions that contribute to the inhibition of LasR activity. Then, 50 ns simulations of top hit compounds were performed to elucidate the stability of their binding conformations with the LasR-LBD. This study, thus concluded that sulfamerazine showed the highest binding affinity for the LasR-LBD binding pocket exhibiting strong inhibitory binding interactions during molecular dynamics (MD) simulation.Enteroviruses are common causes of infections of the central nervous system (CNS) that in temperate climates tend to peak in the summer. The aim of the study was to describe epidemiology, drivers of seasonality, and types of enteroviruses causing infections of the CNS in children in Northeastern Poland. We prospectively collected data on children hospitalized with infection of the CNS attributed to enteroviruses in Bialystok, Poland, from January 2015 to December 2019. In total, 224 children were included. Nineteen different enterovirus types were identified in isolates collected from 188 children. https://www.selleckchem.com/products/mlt-748.html Coxsackie B5 (32%), echovirus 30 (20%), and echovirus 6 (14%) were the three most common types. Enteroviruses were more prevalent during the summer-fall season. Infections caused by echovirus 30 peaked early in June and coxsackievirus B5 in July, whereas echovirus 6 peaked late in October. Phylogenetic analyses of these three enterovirus types showed multiple lineages co-circulating in this region. Mean air temperatures and precipitation rates were independently associated with monthly number of cases. Considering lack of effective treatment or vaccine, easy transmission of enteroviruses between susceptible individuals, their high mutation rate and prolonged time of viral shedding, continued monitoring and surveillance are imperative to recognize enteroviral infections of the CNS and the changes in circulation of enteroviruses in Poland.In this work a novel bimetallic nickel oxide/copper oxide metal-organic framework (NiO/CuO MOF) has been developed by using two linkers Benzene Dicarboxylic acid (BDC) and Pyrazine. The composites of NiO/CuO MOF with different amounts of reduced graphene oxide (rGO) were synthesized through a hydrothermal method and subsequently characterized by multiple significant techniques like XRD, SEM, EDX, FTIR and Raman IR for an investigation of their structural and morphological properties. The prepared series of material was later employed for electrochemical oxidation of methanol, tested by cyclic voltammetry (CV) in basic medium on a modified glassy carbon electrode (GCE). The electrochemical response depicts that increasing concentration of rGO enhances the electrocatalytic activity of the catalyst for methanol oxidation reaction (MOR). The catalyzed oxidation reaction of methanol by NiO/CuO MOF and rGO-NiO/CuO MOF composites give a superlative current density of 437. 28 mA/cm2 at 0.9 V potential at 50 mV/s scan rate. This activity makes it a promising catalytic material for electrolysis of methanol in direct methanol fuel cell (DMFC).Antibacterial antibiotic therapy has played an important role in the treatment of bacterial infections for almost a century. The increasing resistance of pathogenic bacteria to antibiotics leads to an attempt to use previously neglected antibacterial therapies. Here we provide information on the two recombinantly modified antistaphylococcal enzymes derived from lysostaphin (LYSSTAPH-S) and endolysin (LYSDERM-S) derived from kayvirus 812F1 whose target sites reside in the bacterial cell wall. LYSSTAPH-S showed a stable antimicrobial effect over 24-h testing, even in concentrations lower than 1 µg/mL across a wide variety of epidemiologically important sequence types (STs) of methicillin-resistant Staphylococcus aureus (MRSA), especially in the stationary phase of growth (status comparable to chronic infections). LYSDERM-S showed a less potent antimicrobial effect that lasted only a few hours at concentrations of 15 μg/mL and higher. Our data indicate that these antimicrobial enzymes could be of substantial help in the treatment of chronic MRSA wound infections.0 Comentários 0 Compartilhamentos 8 Visualizações 0 Anterior -
Electromyography (startle and corrugator activity) showed medium effect sizes that were consistent across studies. Our findings highlight the diversity as well as the low level of standardization and comparability of research in this area. Significant moderation of effects by study design, trial duration, and control condition emphasizes the need for better standardization of methods. In addition, the small mean effect sizes resulting from our analyses on autonomic measures should be interpreted with caution. Findings corroborate the importance of multi-channel approaches. Copyright © 2020 Zaehringer, Jennen-Steinmetz, Schmahl, Ende and Paret.Background The Seoul Pluripotent Risk for Mental Illness (SPRIM) study was designed to identify predictors leading to mental illness in help-seeking individuals by securing sufficient statistical power through transdiagnostic approaches. The SPRIM study aims to examine the clinical characteristics of high-risk individuals for mental illness and to identify proteomic biomarkers that can predict the onset of mental illness. Methods This paper describes the study protocol of the SPRIM study. We aim to recruit 150 participants who meet the criteria for high risk for major mental illness, 150 patients with major psychiatric disorders (schizophrenia, bipolar disorder, and major depressive disorder), and 50 matched healthy control subjects for 2 years. Clinical evaluations, self-report measures, and proteomic analyses will be implemented. The assessment points are at baseline, 6, 12, 18, and 24 months. Conclusions In the present study, we introduced the study protocol of the SPRIM study, which is the first prospective cohort study of transdiagnostic high-risk concepts using proteomic biomarkers. This study has a paradigm that encompasses various diseases without aiming at predicting and preventing the development of a specific mental illness in help-seeking individuals. The transdiagnostic high-risk concept could be extended to provide a perspective for people with various psychopathological tendencies below a threshold, such that they do not meet the existing diagnostic criteria of mental illnesses, to determine what may lead them to a specific disease and help identify appropriate preventative interventions. Copyright © 2020 Lee, Lee, Lee, Lee, Rhee, Park, Paek, Kim, Kim, Roh, Jung, Kim, Kim, Han, Ahn, Ha and Kwon.Background Discharge from acute mental health services has long been associated with mortality, risk, and related adverse outcomes for patients. Many of the interventions that currently aim to reduce adverse outcomes focus on a single group of healthcare professionals within a single healthcare setting. A recent systematic review highlights very few robust interventions that specifically aim to improve communication across services. However the importance of promoting interagency working and improving information flow between services is continually highlighted as a key priority. Methods Using a novel codesign and experience based approach we worked with a multistakeholder group to develop possible solutions to reduce the adverse outcomes commonly associated with discharge from acute mental health services. This utilized a modified Nominal Group Technique and creative problem solving method to follow a four-stage process Problem Identification, Solution Generation, Decision-Making, Prioritization and Implemen.Methamphetamine (MA) chronic users show risky decision-making deficits. However, the neural mechanisms underlying these deficits remain unclear. A case-control study was conducted to understand how MA users and healthy controls differ in electrophysiological responses associated with series decision-making. Electroencephalography of 31 MA users and 27 healthy controls was recorded when they performed the Balloon Analogue Risk Task involving risky decision-making with uncertain gain or loss. Feedback-related negativity (FRN) was measured and their association with their risky decision-making and impulsivity were examined. Compared to healthy controls, MA users showed smaller peak FRN amplitudes in fronto-central electrodes (F (1, 56) =4.559, p=0.037), and the attenuated peak FRN amplitudes correlated with more risk-taking behavior (r=0.48, p=0.012). Besides, MA users exhibited later FRN (F (1, 56) = 7.561, p=0.008) and earlier P300 (F (1, 56) = 3.582, p = 0.041) compared to healthy controls in fronto-central electrodes, which were correlated with higher score of impulsivity. https://www.selleckchem.com/products/jsh-23.html These findings provided further evidence that MA users showed insensitivity to negative feedback in risky decision-making. FRN might be a promising biomarker of dependence. Copyright © 2020 Zhong, Chen, Zhu, Su, Ruan, Li, Tan, Jiang, Du and Zhao.Objective This study was aimed to explore the impact of fish oil (Omega-3 fatty acids) on hostility and psychopathology among patients with acute violent schizophrenia. Method Sixty seven acute hospitalized patients demonstrating violent behavior in the context of a schizophrenic illness, treated with antipsychotics, were randomly assigned to a supplement with either fish oil (N=32) or placebo (N=35) in a double-blind, placebo-controlled trial. Assessments were conducted at the baseline, week 4 and week 8. Results The symptoms and hostility decreased after treatment for 4 and 8 weeks in both groups, with no group differences. Conclusions The current study did not find improvements in symptoms or hostility from the Omega-3 fatty acid supplementation in patients with schizophrenia. The implication is that Omega-3 fatty acids do not reduce psychopathology and hostility in acute patients with schizophrenia. Copyright © 2020 Qiao, Liu, Han, Liu, Shao and Xie.Treatment of psychiatric disorders relies heavily on a trial and error approach, often prolonging the time required to obtain symptomatic improvements. The identification of reliable predictors of treatment response is instrumental to enact an individualized approach. Alexithymia represents a personality trait reflecting an intrinsic difficulty in recognizing the emotional components of subjective experiences. Thus, its modulating role on treatment outcome has gathered substantial attention during the past years. In the present paper, we aimed at exploring the available evidence for Alexithymia role in influencing the treatment outcome on a wide range of psychiatric conditions by means of a systematic review. Data Source We performed a systematic review in Medline and Scopus, augmented by tracking the reference list of the pertinent articles. Inclusion Criteria To be included in this review, research studies had to assess alexithymia impact on a treatment intervention delivered to manage a primary psychiatric disorder.
Electromyography (startle and corrugator activity) showed medium effect sizes that were consistent across studies. Our findings highlight the diversity as well as the low level of standardization and comparability of research in this area. Significant moderation of effects by study design, trial duration, and control condition emphasizes the need for better standardization of methods. In addition, the small mean effect sizes resulting from our analyses on autonomic measures should be interpreted with caution. Findings corroborate the importance of multi-channel approaches. Copyright © 2020 Zaehringer, Jennen-Steinmetz, Schmahl, Ende and Paret.Background The Seoul Pluripotent Risk for Mental Illness (SPRIM) study was designed to identify predictors leading to mental illness in help-seeking individuals by securing sufficient statistical power through transdiagnostic approaches. The SPRIM study aims to examine the clinical characteristics of high-risk individuals for mental illness and to identify proteomic biomarkers that can predict the onset of mental illness. Methods This paper describes the study protocol of the SPRIM study. We aim to recruit 150 participants who meet the criteria for high risk for major mental illness, 150 patients with major psychiatric disorders (schizophrenia, bipolar disorder, and major depressive disorder), and 50 matched healthy control subjects for 2 years. Clinical evaluations, self-report measures, and proteomic analyses will be implemented. The assessment points are at baseline, 6, 12, 18, and 24 months. Conclusions In the present study, we introduced the study protocol of the SPRIM study, which is the first prospective cohort study of transdiagnostic high-risk concepts using proteomic biomarkers. This study has a paradigm that encompasses various diseases without aiming at predicting and preventing the development of a specific mental illness in help-seeking individuals. The transdiagnostic high-risk concept could be extended to provide a perspective for people with various psychopathological tendencies below a threshold, such that they do not meet the existing diagnostic criteria of mental illnesses, to determine what may lead them to a specific disease and help identify appropriate preventative interventions. Copyright © 2020 Lee, Lee, Lee, Lee, Rhee, Park, Paek, Kim, Kim, Roh, Jung, Kim, Kim, Han, Ahn, Ha and Kwon.Background Discharge from acute mental health services has long been associated with mortality, risk, and related adverse outcomes for patients. Many of the interventions that currently aim to reduce adverse outcomes focus on a single group of healthcare professionals within a single healthcare setting. A recent systematic review highlights very few robust interventions that specifically aim to improve communication across services. However the importance of promoting interagency working and improving information flow between services is continually highlighted as a key priority. Methods Using a novel codesign and experience based approach we worked with a multistakeholder group to develop possible solutions to reduce the adverse outcomes commonly associated with discharge from acute mental health services. This utilized a modified Nominal Group Technique and creative problem solving method to follow a four-stage process Problem Identification, Solution Generation, Decision-Making, Prioritization and Implemen.Methamphetamine (MA) chronic users show risky decision-making deficits. However, the neural mechanisms underlying these deficits remain unclear. A case-control study was conducted to understand how MA users and healthy controls differ in electrophysiological responses associated with series decision-making. Electroencephalography of 31 MA users and 27 healthy controls was recorded when they performed the Balloon Analogue Risk Task involving risky decision-making with uncertain gain or loss. Feedback-related negativity (FRN) was measured and their association with their risky decision-making and impulsivity were examined. Compared to healthy controls, MA users showed smaller peak FRN amplitudes in fronto-central electrodes (F (1, 56) =4.559, p=0.037), and the attenuated peak FRN amplitudes correlated with more risk-taking behavior (r=0.48, p=0.012). Besides, MA users exhibited later FRN (F (1, 56) = 7.561, p=0.008) and earlier P300 (F (1, 56) = 3.582, p = 0.041) compared to healthy controls in fronto-central electrodes, which were correlated with higher score of impulsivity. https://www.selleckchem.com/products/jsh-23.html These findings provided further evidence that MA users showed insensitivity to negative feedback in risky decision-making. FRN might be a promising biomarker of dependence. Copyright © 2020 Zhong, Chen, Zhu, Su, Ruan, Li, Tan, Jiang, Du and Zhao.Objective This study was aimed to explore the impact of fish oil (Omega-3 fatty acids) on hostility and psychopathology among patients with acute violent schizophrenia. Method Sixty seven acute hospitalized patients demonstrating violent behavior in the context of a schizophrenic illness, treated with antipsychotics, were randomly assigned to a supplement with either fish oil (N=32) or placebo (N=35) in a double-blind, placebo-controlled trial. Assessments were conducted at the baseline, week 4 and week 8. Results The symptoms and hostility decreased after treatment for 4 and 8 weeks in both groups, with no group differences. Conclusions The current study did not find improvements in symptoms or hostility from the Omega-3 fatty acid supplementation in patients with schizophrenia. The implication is that Omega-3 fatty acids do not reduce psychopathology and hostility in acute patients with schizophrenia. Copyright © 2020 Qiao, Liu, Han, Liu, Shao and Xie.Treatment of psychiatric disorders relies heavily on a trial and error approach, often prolonging the time required to obtain symptomatic improvements. The identification of reliable predictors of treatment response is instrumental to enact an individualized approach. Alexithymia represents a personality trait reflecting an intrinsic difficulty in recognizing the emotional components of subjective experiences. Thus, its modulating role on treatment outcome has gathered substantial attention during the past years. In the present paper, we aimed at exploring the available evidence for Alexithymia role in influencing the treatment outcome on a wide range of psychiatric conditions by means of a systematic review. Data Source We performed a systematic review in Medline and Scopus, augmented by tracking the reference list of the pertinent articles. Inclusion Criteria To be included in this review, research studies had to assess alexithymia impact on a treatment intervention delivered to manage a primary psychiatric disorder.0 Comentários 0 Compartilhamentos 9 Visualizações 0 Anterior -
AIM To evaluate compliance rate to pterygium postoperative treatment with two different protocols. METHODS Review of clinical data of patients submitted to pterygium excision and conjunctival autografting in a single centre (and a single surgeon) in Barcelona between March 2014 and December 2017. Initial postoperative protocol (protocol 1) consisted of 4 months of topical steroids in a tapering fashion. Protocol 2 consisted of topical steroids tapered over 5 weeks. Compliance rate, complications and clinical outcomes were evaluated, and statistical comparisons were made. RESULTS 120 surgeries were performed in 99 patients. Protocol 1 was applied in 63 cases and the next 57 followed protocol 2. Compliance with protocol 1 (57.6%) was lower than with protocol 2 (84.9%) (p = 0.002). Intraoperative complications (graft tear, corneal thinning, corneal perforation and bleeding) were found in 10 cases of protocol 1 and three cases of protocol 2, p = 0.08. Postoperative complications (graft dislocation, graft haematoma, ocular hypertension and recurrence) were found in 31 cases of protocol 1 (46.2%) and eight cases of protocol 2 (14%), p = 0.001. Six weeks after surgery, ocular hypertension was detected in eight cases corresponding to protocol 1 (13.6%) and two cases of protocol 2 (3.8%), p = 0.099. Recurrence rate during first year was higher in protocol 1 (26.3%) compared to protocol 2 (7.6%), p = 0.011. https://www.selleckchem.com/products/chir-98014.html No cases of visual acuity worsening or infection were registered. CONCLUSION Protocol 2 has shown to have higher compliance rate than protocol 1 and less postoperative complications, proving to be a safe and effective postoperative treatment after pterygium surgery.OBJECTIVE This systematic review focused on randomized controlled trials (RCTs) with physicians and nurses that tested interventions designed to improve their mental health, well-being, physical health, and lifestyle behaviors. DATA SOURCE A systematic search of electronic databases from 2008 to May 2018 included PubMed, CINAHL, PsycINFO, SPORTDiscus, and the Cochrane Library. STUDY INCLUSION AND EXCLUSION CRITERIA Inclusion criteria included an RCT design, samples of physicians and/or nurses, and publication year 2008 or later with outcomes targeting mental health, well-being/resiliency, healthy lifestyle behaviors, and/or physical health. Exclusion criteria included studies with a focus on burnout without measures of mood, resiliency, mindfulness, or stress; primary focus on an area other than health promotion; and non-English papers. DATA EXTRACTION Quantitative and qualitative data were extracted from each study by 2 independent researchers using a standardized template created in Covidence. DATA SYNTHESIS Although meta-analytic pooling across all studies was desired, a wide array of outcome measures made quantitative pooling unsuitable. Therefore, effect sizes were calculated and a mini meta-analysis was completed. RESULTS Twenty-nine studies (N = 2708 participants) met the inclusion criteria. Results indicated that mindfulness and cognitive-behavioral therapy-based interventions are effective in reducing stress, anxiety, and depression. Brief interventions that incorporate deep breathing and gratitude may be beneficial. Visual triggers, pedometers, and health coaching with texting increased physical activity. CONCLUSION Healthcare systems must promote the health and well-being of physicians and nurses with evidence-based interventions to improve population health and enhance the quality and safety of the care that is delivered.An efficient and mild Cu-catalyzed protocol has been developed for the decarboxylative silylation of alkyne-functionalized cyclic carbonate substrates affording 2,3-allenols featuring four different substituents. This practical methodology gives access to a wide scope of tetrasubstituted functionalized allenes in excellent yields.meta-Substituted anilines were efficiently synthesized via copper-catalyzed [1,3]-methoxy rearrangement of N-methoxyanilines followed by Michael addition of nucleophiles to the in situ generated ortho-quinol imine. The present reaction exhibits excellent applicability of para-substituents, such as vinyl, methylthio, ester, and bromo, and carbon nucleophiles, such as 1,3,5-trimethoxybenzene, N-methylindole, and dimethyl malonate. Thus, the present rearrangement can resolve problems stemming from oxidation reactions, such as the use of stoichiometric amounts of oxidants and low compatibility of electron-withdrawing groups.The creation of white and multicoloured 3D-printed objects with high color fidelity via powder sintering processes is currently limited by discolouration from thermal sensitizers used in the printing process. Here, we circumvent this problem by using switchable, photochromic tungsten oxide nanoparticles, which are colorless even at high concentrations. Upon ultraviolet illumination, the tungsten oxide nanoparticles can be reversibly activated, making them highly absorbing in the infrared. Their strong infrared absorption upon activation renders them efficient photothermal sensitizers that can act as fusing agents for polymer powders in sintering-based 3D printing. The WO3 nanoparticles show fast activation times, and when mixed with polyamide powders, they exhibit a heating-to-color-change ratio greatly exceeding other sensitizers in the literature. Upon mixing with colored inks, powders containing WO3 display identical coloration to a pristine powder. This demonstrates the potential of WO3, and photochromic nanoparticles in general as a new class of material for advanced manufacturing.Signatures of Majorana zero modes (MZMs) have been observed in semiconductor nanowires (NWs) with a strong spin-orbital interaction (SOI) with proximity-induced superconductivity. Realizing topological superconductivity and MZMs in this platform requires eliminating spin degeneracy by applying a magnetic field. However, the field can adversely impact the induced superconductivity and places geometric restrictions on the device. These challenges could be circumvented by integrating magnetic elements with the NWs. Here, we report the first experimental investigation of spin transport across InSb NWs with ferromagnetic (FM) contacts. We observe signatures of spin polarization and spin-dependent transport in the quasi-one-dimensional ballistic regime. Moreover, we show that electrostatic gating tunes the observed magnetic signal and reveals a regime where the device acts as a spin filter. These results open an avenue toward developing MZM devices with spin degeneracy lifted locally without external fields. They could also enable spin-based devices that leverage spin-orbital states in quantum wires.
AIM To evaluate compliance rate to pterygium postoperative treatment with two different protocols. METHODS Review of clinical data of patients submitted to pterygium excision and conjunctival autografting in a single centre (and a single surgeon) in Barcelona between March 2014 and December 2017. Initial postoperative protocol (protocol 1) consisted of 4 months of topical steroids in a tapering fashion. Protocol 2 consisted of topical steroids tapered over 5 weeks. Compliance rate, complications and clinical outcomes were evaluated, and statistical comparisons were made. RESULTS 120 surgeries were performed in 99 patients. Protocol 1 was applied in 63 cases and the next 57 followed protocol 2. Compliance with protocol 1 (57.6%) was lower than with protocol 2 (84.9%) (p = 0.002). Intraoperative complications (graft tear, corneal thinning, corneal perforation and bleeding) were found in 10 cases of protocol 1 and three cases of protocol 2, p = 0.08. Postoperative complications (graft dislocation, graft haematoma, ocular hypertension and recurrence) were found in 31 cases of protocol 1 (46.2%) and eight cases of protocol 2 (14%), p = 0.001. Six weeks after surgery, ocular hypertension was detected in eight cases corresponding to protocol 1 (13.6%) and two cases of protocol 2 (3.8%), p = 0.099. Recurrence rate during first year was higher in protocol 1 (26.3%) compared to protocol 2 (7.6%), p = 0.011. https://www.selleckchem.com/products/chir-98014.html No cases of visual acuity worsening or infection were registered. CONCLUSION Protocol 2 has shown to have higher compliance rate than protocol 1 and less postoperative complications, proving to be a safe and effective postoperative treatment after pterygium surgery.OBJECTIVE This systematic review focused on randomized controlled trials (RCTs) with physicians and nurses that tested interventions designed to improve their mental health, well-being, physical health, and lifestyle behaviors. DATA SOURCE A systematic search of electronic databases from 2008 to May 2018 included PubMed, CINAHL, PsycINFO, SPORTDiscus, and the Cochrane Library. STUDY INCLUSION AND EXCLUSION CRITERIA Inclusion criteria included an RCT design, samples of physicians and/or nurses, and publication year 2008 or later with outcomes targeting mental health, well-being/resiliency, healthy lifestyle behaviors, and/or physical health. Exclusion criteria included studies with a focus on burnout without measures of mood, resiliency, mindfulness, or stress; primary focus on an area other than health promotion; and non-English papers. DATA EXTRACTION Quantitative and qualitative data were extracted from each study by 2 independent researchers using a standardized template created in Covidence. DATA SYNTHESIS Although meta-analytic pooling across all studies was desired, a wide array of outcome measures made quantitative pooling unsuitable. Therefore, effect sizes were calculated and a mini meta-analysis was completed. RESULTS Twenty-nine studies (N = 2708 participants) met the inclusion criteria. Results indicated that mindfulness and cognitive-behavioral therapy-based interventions are effective in reducing stress, anxiety, and depression. Brief interventions that incorporate deep breathing and gratitude may be beneficial. Visual triggers, pedometers, and health coaching with texting increased physical activity. CONCLUSION Healthcare systems must promote the health and well-being of physicians and nurses with evidence-based interventions to improve population health and enhance the quality and safety of the care that is delivered.An efficient and mild Cu-catalyzed protocol has been developed for the decarboxylative silylation of alkyne-functionalized cyclic carbonate substrates affording 2,3-allenols featuring four different substituents. This practical methodology gives access to a wide scope of tetrasubstituted functionalized allenes in excellent yields.meta-Substituted anilines were efficiently synthesized via copper-catalyzed [1,3]-methoxy rearrangement of N-methoxyanilines followed by Michael addition of nucleophiles to the in situ generated ortho-quinol imine. The present reaction exhibits excellent applicability of para-substituents, such as vinyl, methylthio, ester, and bromo, and carbon nucleophiles, such as 1,3,5-trimethoxybenzene, N-methylindole, and dimethyl malonate. Thus, the present rearrangement can resolve problems stemming from oxidation reactions, such as the use of stoichiometric amounts of oxidants and low compatibility of electron-withdrawing groups.The creation of white and multicoloured 3D-printed objects with high color fidelity via powder sintering processes is currently limited by discolouration from thermal sensitizers used in the printing process. Here, we circumvent this problem by using switchable, photochromic tungsten oxide nanoparticles, which are colorless even at high concentrations. Upon ultraviolet illumination, the tungsten oxide nanoparticles can be reversibly activated, making them highly absorbing in the infrared. Their strong infrared absorption upon activation renders them efficient photothermal sensitizers that can act as fusing agents for polymer powders in sintering-based 3D printing. The WO3 nanoparticles show fast activation times, and when mixed with polyamide powders, they exhibit a heating-to-color-change ratio greatly exceeding other sensitizers in the literature. Upon mixing with colored inks, powders containing WO3 display identical coloration to a pristine powder. This demonstrates the potential of WO3, and photochromic nanoparticles in general as a new class of material for advanced manufacturing.Signatures of Majorana zero modes (MZMs) have been observed in semiconductor nanowires (NWs) with a strong spin-orbital interaction (SOI) with proximity-induced superconductivity. Realizing topological superconductivity and MZMs in this platform requires eliminating spin degeneracy by applying a magnetic field. However, the field can adversely impact the induced superconductivity and places geometric restrictions on the device. These challenges could be circumvented by integrating magnetic elements with the NWs. Here, we report the first experimental investigation of spin transport across InSb NWs with ferromagnetic (FM) contacts. We observe signatures of spin polarization and spin-dependent transport in the quasi-one-dimensional ballistic regime. Moreover, we show that electrostatic gating tunes the observed magnetic signal and reveals a regime where the device acts as a spin filter. These results open an avenue toward developing MZM devices with spin degeneracy lifted locally without external fields. They could also enable spin-based devices that leverage spin-orbital states in quantum wires.0 Comentários 0 Compartilhamentos 49 Visualizações 0 Anterior
Mais Stories