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t allergen in North America. Patch testing with allergens beyond a screening tray is necessary for complete evaluation of occupational and non-occupational ACD.
These results demonstrate the importance of a regularly updated screening allergen series. Methylisothiazolinone continues to be a significant allergen in North America. Patch testing with allergens beyond a screening tray is necessary for complete evaluation of occupational and non-occupational ACD.Mitogen activated protein kinase (MAPK) activation and neurogenesis are known to play a role in neuronal survival during hibernation. Herein, we investigate the activity of c-Jun N-terminal kinases (JNK) and Ets like-1 protein (Elk1) kinase involved in cell survival, as well as the expression of proliferating cell nuclear antigen (PCNA), a cell proliferation marker, in the brain of the frog Pelophylax esculentus. The study was conducted on female and male frogs collected during the annual cycle. Our results demonstrated that JNK activity increased during the hibernating phase in relation to the active phase. Interestingly, P-Elk1 levels were positively correlated with P-JNK levels, suggesting that the JNK/Elk1 pathway is pivotal in mediating neuroprotective adaptations that are essential to successful hibernation. On the contrary, we detected higher PCNA expression levels during the active period compared with the hibernating period. A sex dimorphism was observed in the expression levels of P-JNK/P-Elk1 that were specifically higher in males, and in the expression of PCNA reporting higher levels in female brains. **** remains to be learned regarding the regulation of hibernation, however, our findings provide new insights into the role of MAPK and proliferative pathways in hibernation, adding new knowledge concerning the mechanisms activated in the brain of ectothermic species to counteract the damage resulting from extreme temperatures.Invited for this month's cover are the collaborating groups of Dr. Margarita Suárez at Universidad de La Habana, Cuba, and Dr. Nazario Martín at Universidad Complutense de Madrid, Spain, together with groups at other institutions worldwide. The Front Cover shows a representation of the H2 @C60 hybrid molecule with a dehydroepiandrosterone moiety interacting with the active site of the SARS Cov-2. Read the full text of the article at 10.1002/cplu.202000770.The thermal quality of the habitat is key for the regulation of body temperature in terrestrial ectotherms and, therefore, permits them to carry out their fundamental biological activities. In thermally heterogeneous environments, ectotherms might follow different behavioral or physiological strategies to maintain their body temperature within biologically adequate boundaries, for which they depend on microhabitat selection. These aspects are, thus, relevant in the context of habitat degradation and land-use change. In this study, we characterized the thermal ecology of three lizard species (genus Xantusia) that differ in microhabitat use along the Baja California peninsula, Mexico. We made three predictions (1) the three species will follow different thermoregulatory strategies according to habitat thermal quality; (2) the thermal requirements and tolerances of these species will match the environmental or microenvironmental thermal conditions; and (3) due to their habitat and range restriction, the species studied will be highly vulnerable to climate change. Our results indicate the existence of thermoregulatory mechanisms in Xantusia to face thermal heterogeneity, including behavioral thermoregulation by choosing different microhabitats, shifts in activity periods, and adaptation to particular high thermal quality microhabitats. Furthermore, despite their association to specific microhabitats and specialized physiology, the studied species will not be adversely affected by climate change, as the increased microenvironmental temperatures will lead to a higher habitat thermal quality and lower costs of thermoregulation. However, we do not discard other indirect adverse effects of climate change not considered in this study.Although blackwaters, named for their rich content of dissolved organic carbon (DOC), are often very poor in ions and very acidic, they support great fish biodiversity. Indeed, about 8% of all freshwater fish species live in the blackwaters of the Rio Negro watershed in the Amazon basin. We review how native fish survive these harsh conditions that would kill most freshwater fish, with a particular focus on the role of DOC, a water quality parameter that has been relatively understudied. DOC, which is functionally defined by its ability to pass through a 0.45-µm filter, comprises a diverse range of compounds formed by the breakdown of organic matter and is quantified by its carbon component that is approximately 50% by mass. Adaptations of fish to acidic blackwaters include minimal acid-base disturbances associated with a unique, largely unknown, high-affinity Na+ uptake system that is resistant to inhibition by low pH in members of the Characiformes, and very tight regulation of Na+ efflux at low pH in the C the PBI (determined by titration), are indicative of both the biological effectiveness of DOC and the ability to protect against metal toxicity. https://www.selleckchem.com/products/gsk-3484862.html Future research needs are highlighted, including a greater mechanistic understanding of the actions of DOCs on gill ionoregulatory function, morphology, TEP, and metal toxicity. These should be investigated in a wider range of native fish Orders that inhabit one of the world's greatest biodiversity hotspots for freshwater fishes.Acetone is one of the toxic, explosive, and harmful gases. It may cause several health hazard issues such as narcosis and headache. Acetone is also regarded as a key biomarker to diagnose several diseases as well as monitor the disorders in human health. Based on clinical findings, acetone concentration in human breath is correlated with many diseases such as asthma, halitosis, lung cancer, and diabetes. Thus, its investigation can become a new approach for health monitoring. Better management at the early stages of such diseases has the potential not only to reduce deaths associated with the disease but also to reduce medical costs. ZnO-based sensors show great potential for acetone gas due to their high chemical stability, simple synthesis process, and low cost. The findings suggested that the acetone sensing performance of such sensors can be significantly improved by manipulating the microstructure (surface area, porosity, etc.), composition, and morphology of ZnO nanomaterials. This article provides a comprehensive review of the state-of-the-art research activities, published during the last five years (2016 to 2020), related to acetone gas sensing using nanostructured ZnO (nanowires, nanoparticles, nanorods, thin films, etc).
t allergen in North America. Patch testing with allergens beyond a screening tray is necessary for complete evaluation of occupational and non-occupational ACD. These results demonstrate the importance of a regularly updated screening allergen series. Methylisothiazolinone continues to be a significant allergen in North America. Patch testing with allergens beyond a screening tray is necessary for complete evaluation of occupational and non-occupational ACD.Mitogen activated protein kinase (MAPK) activation and neurogenesis are known to play a role in neuronal survival during hibernation. Herein, we investigate the activity of c-Jun N-terminal kinases (JNK) and Ets like-1 protein (Elk1) kinase involved in cell survival, as well as the expression of proliferating cell nuclear antigen (PCNA), a cell proliferation marker, in the brain of the frog Pelophylax esculentus. The study was conducted on female and male frogs collected during the annual cycle. Our results demonstrated that JNK activity increased during the hibernating phase in relation to the active phase. Interestingly, P-Elk1 levels were positively correlated with P-JNK levels, suggesting that the JNK/Elk1 pathway is pivotal in mediating neuroprotective adaptations that are essential to successful hibernation. On the contrary, we detected higher PCNA expression levels during the active period compared with the hibernating period. A sex dimorphism was observed in the expression levels of P-JNK/P-Elk1 that were specifically higher in males, and in the expression of PCNA reporting higher levels in female brains. Much remains to be learned regarding the regulation of hibernation, however, our findings provide new insights into the role of MAPK and proliferative pathways in hibernation, adding new knowledge concerning the mechanisms activated in the brain of ectothermic species to counteract the damage resulting from extreme temperatures.Invited for this month's cover are the collaborating groups of Dr. Margarita Suárez at Universidad de La Habana, Cuba, and Dr. Nazario Martín at Universidad Complutense de Madrid, Spain, together with groups at other institutions worldwide. The Front Cover shows a representation of the H2 @C60 hybrid molecule with a dehydroepiandrosterone moiety interacting with the active site of the SARS Cov-2. Read the full text of the article at 10.1002/cplu.202000770.The thermal quality of the habitat is key for the regulation of body temperature in terrestrial ectotherms and, therefore, permits them to carry out their fundamental biological activities. In thermally heterogeneous environments, ectotherms might follow different behavioral or physiological strategies to maintain their body temperature within biologically adequate boundaries, for which they depend on microhabitat selection. These aspects are, thus, relevant in the context of habitat degradation and land-use change. In this study, we characterized the thermal ecology of three lizard species (genus Xantusia) that differ in microhabitat use along the Baja California peninsula, Mexico. We made three predictions (1) the three species will follow different thermoregulatory strategies according to habitat thermal quality; (2) the thermal requirements and tolerances of these species will match the environmental or microenvironmental thermal conditions; and (3) due to their habitat and range restriction, the species studied will be highly vulnerable to climate change. Our results indicate the existence of thermoregulatory mechanisms in Xantusia to face thermal heterogeneity, including behavioral thermoregulation by choosing different microhabitats, shifts in activity periods, and adaptation to particular high thermal quality microhabitats. Furthermore, despite their association to specific microhabitats and specialized physiology, the studied species will not be adversely affected by climate change, as the increased microenvironmental temperatures will lead to a higher habitat thermal quality and lower costs of thermoregulation. However, we do not discard other indirect adverse effects of climate change not considered in this study.Although blackwaters, named for their rich content of dissolved organic carbon (DOC), are often very poor in ions and very acidic, they support great fish biodiversity. Indeed, about 8% of all freshwater fish species live in the blackwaters of the Rio Negro watershed in the Amazon basin. We review how native fish survive these harsh conditions that would kill most freshwater fish, with a particular focus on the role of DOC, a water quality parameter that has been relatively understudied. DOC, which is functionally defined by its ability to pass through a 0.45-µm filter, comprises a diverse range of compounds formed by the breakdown of organic matter and is quantified by its carbon component that is approximately 50% by mass. Adaptations of fish to acidic blackwaters include minimal acid-base disturbances associated with a unique, largely unknown, high-affinity Na+ uptake system that is resistant to inhibition by low pH in members of the Characiformes, and very tight regulation of Na+ efflux at low pH in the C the PBI (determined by titration), are indicative of both the biological effectiveness of DOC and the ability to protect against metal toxicity. https://www.selleckchem.com/products/gsk-3484862.html Future research needs are highlighted, including a greater mechanistic understanding of the actions of DOCs on gill ionoregulatory function, morphology, TEP, and metal toxicity. These should be investigated in a wider range of native fish Orders that inhabit one of the world's greatest biodiversity hotspots for freshwater fishes.Acetone is one of the toxic, explosive, and harmful gases. It may cause several health hazard issues such as narcosis and headache. Acetone is also regarded as a key biomarker to diagnose several diseases as well as monitor the disorders in human health. Based on clinical findings, acetone concentration in human breath is correlated with many diseases such as asthma, halitosis, lung cancer, and diabetes. Thus, its investigation can become a new approach for health monitoring. Better management at the early stages of such diseases has the potential not only to reduce deaths associated with the disease but also to reduce medical costs. ZnO-based sensors show great potential for acetone gas due to their high chemical stability, simple synthesis process, and low cost. The findings suggested that the acetone sensing performance of such sensors can be significantly improved by manipulating the microstructure (surface area, porosity, etc.), composition, and morphology of ZnO nanomaterials. This article provides a comprehensive review of the state-of-the-art research activities, published during the last five years (2016 to 2020), related to acetone gas sensing using nanostructured ZnO (nanowires, nanoparticles, nanorods, thin films, etc).0 Kommentare 0 Geteilt 15 Ansichten 0 BewertungenBitte loggen Sie sich ein, um liken, teilen und zu kommentieren! -
a conflict-affected region had considerable implications on this study's design and implementation.
The trial was registered at www.ClinicalTrials.gov 6 September 2019 (reg no NCT04078633 ).
The trial was registered at www.ClinicalTrials.gov 6 September 2019 (reg no NCT04078633 ).
Thoracic epidural analgesia is considered the gold standard for pain relief in video-assisted thoracoscopic surgery. This neuraxial technique blocks pain sensation by injecting a local anesthetic agent in the epidural space near the spinal cord to block spinal nerve roots. Recently, the erector spinae plane block has been introduced as a practical alternative to the thoracic epidural. https://www.selleckchem.com/products/mk-4827.html This interfascial regional anesthesia technique interrupts pain sensation by injecting a local anesthetic agent in between the muscular layers of the thoracic wall. Several case series and three RCTs described it as an effective pain management technique in video-assisted thoracoscopic surgery (Scimia et al., Reg Anesth Pain Med 42537, 2017; Adhikary et al., Indian J Anaesth 6275-8, 2018; Kim, A randomized controlled trial comparing continuous erector spinae plane block with thoracic epidural analgesia for postoperative pain management in video-assisted thoracic surgery, n.d.; Yao et al., J Clin Anesth 63109783, 2020; Ciftci egistered.
Finding new therapeutic uses for existing medicines could lead to safe, affordable and timely new treatment options for patients with high medical needs. However, due to a lack of economic incentives, pharmaceutical developers are rarely interested to invest in research with approved medicines, especially when they are out of basic patent or regulatory protection. Consequently, potential new uses for these medicines are mainly studied in independent clinical trials initiated and led by researchers from academia, research institutes, or collaborative groups. Yet, additional financial support is needed to conduct expensive phase III clinical trials to confirm the results from exploratory research.
In this study, scientific and grey literature was searched to identify and evaluate new mechanisms for funding clinical trials with repurposed medicines. Semi-structured interviews were conducted with 16 European stakeholders with expertise in clinical research, funding mechanisms and/or drug repurposing between Ncient and reduce the need for additional funding.
New funding mechanisms to support clinical research may become more important in the future but the unresolved issues identified in the current study warrant further exploration.
New funding mechanisms to support clinical research may become more important in the future but the unresolved issues identified in the current study warrant further exploration.
1,2,4-oxadiazole derivatives exhibited significant anti-cancer activity when they were evaluated, against human cancer cell lines. They also showed anti-inflammatory, analgesic, diabetic, immunosuppressive, α,β
-receptor antagonist, antimicrobial, anti-helminthic, histamine-H3 and antiparasitic properties. A pyrimidine analog, 5 fluoro-uracil is a chemotherapeutic drug used for treating multiple solid malignant tumors. But its application is limited, as it has side effects like low bioavailability and high toxicity. Molecular docking is an exemplary tool, helps in identifying target and designing a drug containing high bio-availability and minimum toxicity.
A set of 1,2,4-oxadiazole linked 5-fluoruracil derivatives (7a-j) were synthesized and their structures were confirmed by
HNMR,
CNMR and Mass spectral analysis. Further, these compounds were investigated for their anticancer activity towards a panel of four human cancer cell lines such as (MCF-7, MDA MB-231), lung cancer (A549) and prostate cancer (DU-145) by using MTT method. Among them, compounds 7a, 7b, 7c, 7d and 7i demonstrated more promising anticancer activity than standard.
Synthesized derivatives (7a-j) of 1,2,4-oxadiazole linked 5-fluorouracil and investigated for their anticancer activity towards a panel of four human cancer cell lines.
Synthesized derivatives (7a-j) of 1,2,4-oxadiazole linked 5-fluorouracil and investigated for their anticancer activity towards a panel of four human cancer cell lines.
The evolution of multicellularity is a critical event that remains incompletely understood. We use the social amoeba, Dictyostelium discoideum, one of the rare organisms that readily transits **** and forth between both unicellular and multicellular stages, to examine the role of epigenetics in regulating multicellularity.
While transitioning to multicellular states, patterns of H3K4 methylation and H3K27 acetylation significantly change. By combining transcriptomics, epigenomics, chromatin accessibility, and orthologous gene analyses with other unicellular and multicellular organisms, we identify 52 conserved genes, which are specifically accessible and expressed during multicellular states. We validated that four of these genes, including the H3K27 deacetylase hdaD, are necessary and that an SMC-like gene, smcl1, is sufficient for multicellularity in Dictyostelium.
These results highlight the importance of epigenetics in reorganizing chromatin architecture to facilitate multicellularity in Dictyostelium discoideum and raise exciting possibilities about the role of epigenetics in the evolution of multicellularity more broadly.
These results highlight the importance of epigenetics in reorganizing chromatin architecture to facilitate multicellularity in Dictyostelium discoideum and raise exciting possibilities about the role of epigenetics in the evolution of multicellularity more broadly.
Uveal melanoma (UM) represents the most common primary intra-ocular malignancy in adults. Up to 50% of the patients develop distant metastases within 10 years from diagnosis, with the liver as the most common site. Upon metastatization, life expectancy strongly reduces and immune checkpoint inhibitors that prove effective in cutaneous melanoma do not modify clinical outcome. To date, few studies have focused on deciphering the immunomodulatory features of metastatic UM microenvironment, and there are no prognostic models for clinical use. This highlights the urgent need to understand the delicate interplay between tumor and immune cells acting at the site of metastasis.
We collected a patient cohort comprising 21 metastatic UM patients. Hepatic and extra-hepatic UM metastasis samples were studied by multiplex immunofluorescence to assess the tumor immune cell composition. Quantitative analyses were performed to correlate immune cell densities with treatment response, metastasis site and patient survival.
Compared to patients with progressive disease, those with controlled disease had a higher intra-tumoral/peritumoral ratio of CD8 + Granzyme B+ cells, higher density of intra-tumoral CD8+ cytotoxic T lymphocytes (CTL) and an increased percentage of UM cells in close proximity to T lymphocytes, reflecting a role of tumor-killing T cells in the disease.
a conflict-affected region had considerable implications on this study's design and implementation. The trial was registered at www.ClinicalTrials.gov 6 September 2019 (reg no NCT04078633 ). The trial was registered at www.ClinicalTrials.gov 6 September 2019 (reg no NCT04078633 ). Thoracic epidural analgesia is considered the gold standard for pain relief in video-assisted thoracoscopic surgery. This neuraxial technique blocks pain sensation by injecting a local anesthetic agent in the epidural space near the spinal cord to block spinal nerve roots. Recently, the erector spinae plane block has been introduced as a practical alternative to the thoracic epidural. https://www.selleckchem.com/products/mk-4827.html This interfascial regional anesthesia technique interrupts pain sensation by injecting a local anesthetic agent in between the muscular layers of the thoracic wall. Several case series and three RCTs described it as an effective pain management technique in video-assisted thoracoscopic surgery (Scimia et al., Reg Anesth Pain Med 42537, 2017; Adhikary et al., Indian J Anaesth 6275-8, 2018; Kim, A randomized controlled trial comparing continuous erector spinae plane block with thoracic epidural analgesia for postoperative pain management in video-assisted thoracic surgery, n.d.; Yao et al., J Clin Anesth 63109783, 2020; Ciftci egistered. Finding new therapeutic uses for existing medicines could lead to safe, affordable and timely new treatment options for patients with high medical needs. However, due to a lack of economic incentives, pharmaceutical developers are rarely interested to invest in research with approved medicines, especially when they are out of basic patent or regulatory protection. Consequently, potential new uses for these medicines are mainly studied in independent clinical trials initiated and led by researchers from academia, research institutes, or collaborative groups. Yet, additional financial support is needed to conduct expensive phase III clinical trials to confirm the results from exploratory research. In this study, scientific and grey literature was searched to identify and evaluate new mechanisms for funding clinical trials with repurposed medicines. Semi-structured interviews were conducted with 16 European stakeholders with expertise in clinical research, funding mechanisms and/or drug repurposing between Ncient and reduce the need for additional funding. New funding mechanisms to support clinical research may become more important in the future but the unresolved issues identified in the current study warrant further exploration. New funding mechanisms to support clinical research may become more important in the future but the unresolved issues identified in the current study warrant further exploration. 1,2,4-oxadiazole derivatives exhibited significant anti-cancer activity when they were evaluated, against human cancer cell lines. They also showed anti-inflammatory, analgesic, diabetic, immunosuppressive, α,β -receptor antagonist, antimicrobial, anti-helminthic, histamine-H3 and antiparasitic properties. A pyrimidine analog, 5 fluoro-uracil is a chemotherapeutic drug used for treating multiple solid malignant tumors. But its application is limited, as it has side effects like low bioavailability and high toxicity. Molecular docking is an exemplary tool, helps in identifying target and designing a drug containing high bio-availability and minimum toxicity. A set of 1,2,4-oxadiazole linked 5-fluoruracil derivatives (7a-j) were synthesized and their structures were confirmed by HNMR, CNMR and Mass spectral analysis. Further, these compounds were investigated for their anticancer activity towards a panel of four human cancer cell lines such as (MCF-7, MDA MB-231), lung cancer (A549) and prostate cancer (DU-145) by using MTT method. Among them, compounds 7a, 7b, 7c, 7d and 7i demonstrated more promising anticancer activity than standard. Synthesized derivatives (7a-j) of 1,2,4-oxadiazole linked 5-fluorouracil and investigated for their anticancer activity towards a panel of four human cancer cell lines. Synthesized derivatives (7a-j) of 1,2,4-oxadiazole linked 5-fluorouracil and investigated for their anticancer activity towards a panel of four human cancer cell lines. The evolution of multicellularity is a critical event that remains incompletely understood. We use the social amoeba, Dictyostelium discoideum, one of the rare organisms that readily transits back and forth between both unicellular and multicellular stages, to examine the role of epigenetics in regulating multicellularity. While transitioning to multicellular states, patterns of H3K4 methylation and H3K27 acetylation significantly change. By combining transcriptomics, epigenomics, chromatin accessibility, and orthologous gene analyses with other unicellular and multicellular organisms, we identify 52 conserved genes, which are specifically accessible and expressed during multicellular states. We validated that four of these genes, including the H3K27 deacetylase hdaD, are necessary and that an SMC-like gene, smcl1, is sufficient for multicellularity in Dictyostelium. These results highlight the importance of epigenetics in reorganizing chromatin architecture to facilitate multicellularity in Dictyostelium discoideum and raise exciting possibilities about the role of epigenetics in the evolution of multicellularity more broadly. These results highlight the importance of epigenetics in reorganizing chromatin architecture to facilitate multicellularity in Dictyostelium discoideum and raise exciting possibilities about the role of epigenetics in the evolution of multicellularity more broadly. Uveal melanoma (UM) represents the most common primary intra-ocular malignancy in adults. Up to 50% of the patients develop distant metastases within 10 years from diagnosis, with the liver as the most common site. Upon metastatization, life expectancy strongly reduces and immune checkpoint inhibitors that prove effective in cutaneous melanoma do not modify clinical outcome. To date, few studies have focused on deciphering the immunomodulatory features of metastatic UM microenvironment, and there are no prognostic models for clinical use. This highlights the urgent need to understand the delicate interplay between tumor and immune cells acting at the site of metastasis. We collected a patient cohort comprising 21 metastatic UM patients. Hepatic and extra-hepatic UM metastasis samples were studied by multiplex immunofluorescence to assess the tumor immune cell composition. Quantitative analyses were performed to correlate immune cell densities with treatment response, metastasis site and patient survival. Compared to patients with progressive disease, those with controlled disease had a higher intra-tumoral/peritumoral ratio of CD8 + Granzyme B+ cells, higher density of intra-tumoral CD8+ cytotoxic T lymphocytes (CTL) and an increased percentage of UM cells in close proximity to T lymphocytes, reflecting a role of tumor-killing T cells in the disease.0 Kommentare 0 Geteilt 14 Ansichten 0 Bewertungen -
An important clindamycin-rifampicin pharmacokinetic (PK) interaction has been reported, but the potential influence of the clindamycin administration route on that interaction is unknown. This prospective, observational, comparative PK study was undertaken to characterize and analyse the impact of the route, comparing the rifampicin enzyme-inductor effects on clindamycin clearance (CLclin) for oral versus intravenous (IV) administration.
Patients with bone-and-joint infections (BJIs) were treated with clindamycin monotherapy (n=20) or clindamycin-rifampicin combination therapy (n=19). Patients received continuous IV clindamycin infusion for 2-6weeks, followed by an oral regimen. Liquid chromatography-mass spectrometry was used to measure plasma clindamycin concentrations at the end of IV and after 2weeks of oral treatment. https://www.selleckchem.com/products/hada-hydrochloride.html The ratios of the mean CLclin for the combination and monotherapy groups were calculated for IV (Riv) and oral (Rpo) routes, with the final ratio, Rf=Rpo/Riv, representing the fold change of the rifampicin-inducing effect from the IV to the oral route.
Comparing monotherapy with combination-therapy groups, the former's median steady-state concentration was two-fold higher after IV administration (8.49 versus 3.82 mg/L, p<0.001) and its median AUC
was 12 times higher after oral intake (37.7 versus 3.1 mg.h/L, p<0.001). Riv, Rpo and Rf were 2.68, 18.8 and 7.0 respectively.
The magnitude of this interaction was markedly increased by oral intake, questioning the use of oral treatment for difficult-to-treat infections like BJIs. Nevertheless, the clindamycin-rifampicin combination seems possible provided that clindamycin is administered by continuous IV infusion.
The magnitude of this interaction was markedly increased by oral intake, questioning the use of oral treatment for difficult-to-treat infections like BJIs. Nevertheless, the clindamycin-rifampicin combination seems possible provided that clindamycin is administered by continuous IV infusion.
Studies on coronavirus disease 2019 (COVID-19) have mainly focused on hospitalized patients or those with severe disease. We aim to assess the clinical characteristics, outcomes and factors associated with hospital admission or death in adult outpatients with COVID-19.
This is a prospective cohort of outpatients with suspected or confirmed COVID-19, registered in the Covidom telesurveillance solution for home monitoring of patients with COVID-19 in the Greater Paris area, from March to August 2020. The primary outcome was clinical worsening, defined as hospitalization or death within 1month after symptom onset.
Among 43103 patients, mean age was 42.9years (SD 14.3years); 93.0% (n=40081) of patients were <65years old and 61.9% (n=26688) were women. Of these 43103 patients, 67.5% (n=29104) completed a medical questionnaire on co-morbidities and symptoms. The main reported co-morbidities were asthma (12.8%; n=3685), hypertension (12.3%; n=3546) and diabetes (4.8%; n=1385). A small proportion of all eligible patients (4.1%, 95% CI 3.9-4.2; 1751/43103) experienced clinical worsening. The rate of hospitalization was 4.0% (95% CI 3.8%-4.2%; n=1728) and 0.1% (95% CI 0.1%-0.2%; n=64) died. Factors associated with clinical worsening were male sex, older age, obesity and co-morbidities such as chronic renal disease or cancer under treatment. Probability of worsening was reduced with anosmia/ageusia.
Clinical worsening was rare among outpatients. Male sex, older age and co-morbidities such as chronic renal disease, active cancers or obesity were independently associated with clinical worsening. However, our cohort may include patients younger and healthier than the general population.
Clinical worsening was rare among outpatients. Male sex, older age and co-morbidities such as chronic renal disease, active cancers or obesity were independently associated with clinical worsening. However, our cohort may include patients younger and healthier than the general population.
Ceftazidime-avibactam (CZA) and cefiderocol are recently commercialized molecules active against highly drug-resistant bacteria, including carbapenem-resistant members of the Enterobacteriaceae. Mutants resistant to CZA have been described, notably in Klebsiella pneumoniae carbapenemase (KPC) producers. Considering the structural similarities between ceftazidime and cefiderocol, we hypothesized that resistance to CZA in KPC-producing members of the Enterobacterales may lead to cross-resistance to cefiderocol.
CZA-resistant mutants from three clinical isolates of the Enterobacterales carrying either bla
or bla
were selected invitro. Mutants with increased ****to CZA compared to the ancestral allele were cloned in a pBR322 plasmid and expressed in Escherichia coli TOP10. We evaluated the impact of these mutations on cefiderocol **** and minimal bactericidal concentrations (****), and we assessed the impact of bacterial inoculum size on cefiderocol ****.
We used 37 KPC mutants with increased CZA ****. suggesting that precautions should be taken when treating infections with a suspected high inoculum.
mcr-9.1 is a newly described mobile colistin resistance gene. We have noted its presence in multiple species of carbapenem-resistant Enterobacterales (CRE) from our institution. We aimed to determine the clinical features, genomic context and phenotypic impact of mcr-9.1 carriage in a series of patients between 2010 and 2019.
We identified 32 patients with mcr-9.1-carrying CRE isolates (mCRE) and collected demographic, antimicrobial exposure and infection data. Whole-genome sequencing (including short and long reads) was performed on 32 isolates. We assessed sequence similarity of mcr-9.1-harbouring plasmids, then compared our findings with plasmids for which sequence data were publicly available.
There was no colistin exposure in patients prior to isolation of mCRE. mcr-9.1 was identified on IncHI2 plasmids across four different bacterial species and was co-located with bla
in 23/30 plasmids studied. mCRE isolates did not demonstrate phenotypic colistin resistance, either at baseline or following sublethal colistin exposure, thus showing that mcr-9.
An important clindamycin-rifampicin pharmacokinetic (PK) interaction has been reported, but the potential influence of the clindamycin administration route on that interaction is unknown. This prospective, observational, comparative PK study was undertaken to characterize and analyse the impact of the route, comparing the rifampicin enzyme-inductor effects on clindamycin clearance (CLclin) for oral versus intravenous (IV) administration. Patients with bone-and-joint infections (BJIs) were treated with clindamycin monotherapy (n=20) or clindamycin-rifampicin combination therapy (n=19). Patients received continuous IV clindamycin infusion for 2-6weeks, followed by an oral regimen. Liquid chromatography-mass spectrometry was used to measure plasma clindamycin concentrations at the end of IV and after 2weeks of oral treatment. https://www.selleckchem.com/products/hada-hydrochloride.html The ratios of the mean CLclin for the combination and monotherapy groups were calculated for IV (Riv) and oral (Rpo) routes, with the final ratio, Rf=Rpo/Riv, representing the fold change of the rifampicin-inducing effect from the IV to the oral route. Comparing monotherapy with combination-therapy groups, the former's median steady-state concentration was two-fold higher after IV administration (8.49 versus 3.82 mg/L, p<0.001) and its median AUC was 12 times higher after oral intake (37.7 versus 3.1 mg.h/L, p<0.001). Riv, Rpo and Rf were 2.68, 18.8 and 7.0 respectively. The magnitude of this interaction was markedly increased by oral intake, questioning the use of oral treatment for difficult-to-treat infections like BJIs. Nevertheless, the clindamycin-rifampicin combination seems possible provided that clindamycin is administered by continuous IV infusion. The magnitude of this interaction was markedly increased by oral intake, questioning the use of oral treatment for difficult-to-treat infections like BJIs. Nevertheless, the clindamycin-rifampicin combination seems possible provided that clindamycin is administered by continuous IV infusion. Studies on coronavirus disease 2019 (COVID-19) have mainly focused on hospitalized patients or those with severe disease. We aim to assess the clinical characteristics, outcomes and factors associated with hospital admission or death in adult outpatients with COVID-19. This is a prospective cohort of outpatients with suspected or confirmed COVID-19, registered in the Covidom telesurveillance solution for home monitoring of patients with COVID-19 in the Greater Paris area, from March to August 2020. The primary outcome was clinical worsening, defined as hospitalization or death within 1month after symptom onset. Among 43103 patients, mean age was 42.9years (SD 14.3years); 93.0% (n=40081) of patients were <65years old and 61.9% (n=26688) were women. Of these 43103 patients, 67.5% (n=29104) completed a medical questionnaire on co-morbidities and symptoms. The main reported co-morbidities were asthma (12.8%; n=3685), hypertension (12.3%; n=3546) and diabetes (4.8%; n=1385). A small proportion of all eligible patients (4.1%, 95% CI 3.9-4.2; 1751/43103) experienced clinical worsening. The rate of hospitalization was 4.0% (95% CI 3.8%-4.2%; n=1728) and 0.1% (95% CI 0.1%-0.2%; n=64) died. Factors associated with clinical worsening were male sex, older age, obesity and co-morbidities such as chronic renal disease or cancer under treatment. Probability of worsening was reduced with anosmia/ageusia. Clinical worsening was rare among outpatients. Male sex, older age and co-morbidities such as chronic renal disease, active cancers or obesity were independently associated with clinical worsening. However, our cohort may include patients younger and healthier than the general population. Clinical worsening was rare among outpatients. Male sex, older age and co-morbidities such as chronic renal disease, active cancers or obesity were independently associated with clinical worsening. However, our cohort may include patients younger and healthier than the general population. Ceftazidime-avibactam (CZA) and cefiderocol are recently commercialized molecules active against highly drug-resistant bacteria, including carbapenem-resistant members of the Enterobacteriaceae. Mutants resistant to CZA have been described, notably in Klebsiella pneumoniae carbapenemase (KPC) producers. Considering the structural similarities between ceftazidime and cefiderocol, we hypothesized that resistance to CZA in KPC-producing members of the Enterobacterales may lead to cross-resistance to cefiderocol. CZA-resistant mutants from three clinical isolates of the Enterobacterales carrying either bla or bla were selected invitro. Mutants with increased MIC to CZA compared to the ancestral allele were cloned in a pBR322 plasmid and expressed in Escherichia coli TOP10. We evaluated the impact of these mutations on cefiderocol MICs and minimal bactericidal concentrations (MBCs), and we assessed the impact of bacterial inoculum size on cefiderocol MICs. We used 37 KPC mutants with increased CZA MICs. suggesting that precautions should be taken when treating infections with a suspected high inoculum. mcr-9.1 is a newly described mobile colistin resistance gene. We have noted its presence in multiple species of carbapenem-resistant Enterobacterales (CRE) from our institution. We aimed to determine the clinical features, genomic context and phenotypic impact of mcr-9.1 carriage in a series of patients between 2010 and 2019. We identified 32 patients with mcr-9.1-carrying CRE isolates (mCRE) and collected demographic, antimicrobial exposure and infection data. Whole-genome sequencing (including short and long reads) was performed on 32 isolates. We assessed sequence similarity of mcr-9.1-harbouring plasmids, then compared our findings with plasmids for which sequence data were publicly available. There was no colistin exposure in patients prior to isolation of mCRE. mcr-9.1 was identified on IncHI2 plasmids across four different bacterial species and was co-located with bla in 23/30 plasmids studied. mCRE isolates did not demonstrate phenotypic colistin resistance, either at baseline or following sublethal colistin exposure, thus showing that mcr-9.0 Kommentare 0 Geteilt 3 Ansichten 0 Bewertungen -
Although the incorporation of 13C was not detected, a syntrophic volatile-fatty-acid oxidizer and hydrogenotrophic methanogens significantly expressed their 16S rRNA molecules at day 21, indicating the metabolic activation of these final decomposers under the latter nutrient-limited conditions. The results demonstrated the nitrate-driven trophic association of sulfur-cycling microorganisms and the subsequent microbial activation and diversification, triggering the restoration of the marine ecosystem function.Droplets impacting solid surfaces is ubiquitous in nature and of practical importance in numerous industrial applications. For liquid-repelling applications, rigidity-based asymmetric redistribution and flexibility-based structural oscillation strategies have been proven on artificial surfaces; however, these are limited by strict impacting positioning. Here, we show that the gap between these two strategies can be bridged by a flexibility-patterned design similar to a trampoline park. https://www.selleckchem.com/products/bay-1000394.html Such a flexibility-patterned design is realized by three-dimensional projection micro-stereolithography and is shown to enhance liquid repellency in terms of droplet impalement resistance and contact time reduction. This is the first demonstration of the synergistic effect obtained by a hybrid solution that exploits asymmetric redistribution and structural oscillation in liquid-repelling applications, paving the rigidity-flexibility cooperative way of wettability tuning. Also, the flexibility-patterned surface is applied to accelerate liquid evaporation.Effective recycling of spent Li metal anodes is an urgent need for energy/resource conservation and environmental protection, making Li metal batteries more affordable and sustainable. For the first time, we explore a unique sustainable healable lithium alloy anode inspired by the intrinsic healing ability of liquid metal. This lithium alloy anode can transform **** to the liquid state through Li-completed extraction, and then the structure degradation generated during operation could be healed. Therefore, an ultralong cycle life of more than 1300 times can be successfully realized under harsh conditions of 5 mA h cm-2 capacitance by a process of two healing behaviors. This design improves the sustainable utilization of Li metal to a great extent, bringing about unexpected effects in the field of lithium-based anodes even at an unprecedentedly high discharge current density (up to 25 mA cm-2) and capacity (up to 50 mA h cm-2).The present study investigated the mechanisms by which large- and small-sized nanoscale hydroxyapatite (nHA) suppressed Fusarium-induced wilt disease in tomato. Both nHA sizes at 9.3 mg/L (low) and 46.5 mg/L (high dose) phosphorus (P) were foliar-sprayed on Fusarium-infected tomato leaf surfaces three times. Diseased shoot mass was increased by 40% upon exposure to the low dose of large-sized nHA compared to disease controls. Exposure to both nHA sizes significantly elevated phenylalanine ammonialyase activity and total phenolic content in Fusarium-infected shoots by 30-80% and 40-68%, respectively. Shoot salicylic acid content was also increased by 10-45%, suggesting the potential relationship between antioxidant and phytohormone pathways in nHA-promoted defense against fungal infection. Exposure to the high dose of both nHA sizes increased the root P content by 27-46%. A constrained analysis of principal coordinates suggests that high dose of both nHA sizes significantly altered the fatty acid profile in diseased tomato. Particularly, the diseased root C183 content was increased by 28-31% in the large-sized nHA treatments, indicating that nHA remodeled the cell membrane as part of defense against Fusarium infection. Taken together, our findings demonstrate the important role of nHA in promoting disease suppression for the sustainable use of nHA in nanoenabled agriculture.Ion current rectification (ICR), diodelike behavior in surface-charged nanopores, shows promise in the design of delivery probes for manipulation of neural networks as it can solve diffusive leakages that might be critical in clinical and research applications. However, it has not been achieved because ICR has restrictions in nanosized dimension and low electrolyte concentration, and rectification direction is inappropriate for delivery. Herein, we present a polyelectrolyte gel-filled (PGF) micropipette harnessing inverted ICR as a delivery probe, which quantitatively transports glutamate to stimulate primary cultured neurons with high efficiency while minimizing leakages. Since the gel works as an ensemble of numerous surface-charged nanopores, the current is rectified in the micro-opening and physiological environment. By extending the charge-selective region using the gel, inverted ICR is generated, which drives outward deliveries of major charge carriers. This study will help in exploring new aspects of ICR and broaden its applications for advanced chemical delivery.Urea oxidation reaction (UOR) has been proposed to replace the formidable oxygen evolution reaction (OER) to reduce the energy consumption for producing hydrogen from electrolysis of water owing to its **** lower thermodynamic oxidation potential compared to that of the OER. Therefore, exploring a highly efficient and stable hydrogen evolution and urea electrooxidation bifunctional catalyst is the key to achieve economical and efficient hydrogen production. In this paper, we report a heterostructured sulfide/phosphide catalyst (Ni3S2-Ni3P/NF) synthesized via one-step thermal treatment of Ni(OH)2/NF, which allows the simultaneous occurrence of phosphorization and sulfuration. The obtained Ni3S2-Ni3P/NF catalyst shows a sheet structure with an average sheet thickness of ∼100 nm, and this sheet is composed of interconnected Ni3S2 and Ni3P nanoparticles (∼20 nm), between which there are a large number of accessible interfaces of Ni3S2-Ni3P. Thus, the Ni3S2-Ni3P/NF exhibits superior performance for both UOR and hydrogen evolution reaction (HER). For the overall urea-water electrolysis, to achieve current densities of 10 and 100 mA cm-2, cell voltage of only 1.43 and 1.65 V is required using this catalyst as both the anode and the cathode. Moreover, this catalyst also maintains fairly excellent stability after a long-term testing, indicating its potential for efficient and energy-saving hydrogen production. The theoretical calculation results show that the Ni atoms at the interface are the most efficient catalytically active site for the HER, and the free energy of hydrogen adsorption is closest to thermal neutrality, which is only 0.16 eV. A self-driven electron transfer at the interface, making the Ni3S2 sides become electron donating while Ni3P sides become electron withdrawing, may be the reason for the enhancement of the UOR activity. Therefore, this work shows an easy treatment for enhancing the catalytic activity of Ni-based materials to achieve high-efficiency urea-water electrolysis.
Although the incorporation of 13C was not detected, a syntrophic volatile-fatty-acid oxidizer and hydrogenotrophic methanogens significantly expressed their 16S rRNA molecules at day 21, indicating the metabolic activation of these final decomposers under the latter nutrient-limited conditions. The results demonstrated the nitrate-driven trophic association of sulfur-cycling microorganisms and the subsequent microbial activation and diversification, triggering the restoration of the marine ecosystem function.Droplets impacting solid surfaces is ubiquitous in nature and of practical importance in numerous industrial applications. For liquid-repelling applications, rigidity-based asymmetric redistribution and flexibility-based structural oscillation strategies have been proven on artificial surfaces; however, these are limited by strict impacting positioning. Here, we show that the gap between these two strategies can be bridged by a flexibility-patterned design similar to a trampoline park. https://www.selleckchem.com/products/bay-1000394.html Such a flexibility-patterned design is realized by three-dimensional projection micro-stereolithography and is shown to enhance liquid repellency in terms of droplet impalement resistance and contact time reduction. This is the first demonstration of the synergistic effect obtained by a hybrid solution that exploits asymmetric redistribution and structural oscillation in liquid-repelling applications, paving the rigidity-flexibility cooperative way of wettability tuning. Also, the flexibility-patterned surface is applied to accelerate liquid evaporation.Effective recycling of spent Li metal anodes is an urgent need for energy/resource conservation and environmental protection, making Li metal batteries more affordable and sustainable. For the first time, we explore a unique sustainable healable lithium alloy anode inspired by the intrinsic healing ability of liquid metal. This lithium alloy anode can transform back to the liquid state through Li-completed extraction, and then the structure degradation generated during operation could be healed. Therefore, an ultralong cycle life of more than 1300 times can be successfully realized under harsh conditions of 5 mA h cm-2 capacitance by a process of two healing behaviors. This design improves the sustainable utilization of Li metal to a great extent, bringing about unexpected effects in the field of lithium-based anodes even at an unprecedentedly high discharge current density (up to 25 mA cm-2) and capacity (up to 50 mA h cm-2).The present study investigated the mechanisms by which large- and small-sized nanoscale hydroxyapatite (nHA) suppressed Fusarium-induced wilt disease in tomato. Both nHA sizes at 9.3 mg/L (low) and 46.5 mg/L (high dose) phosphorus (P) were foliar-sprayed on Fusarium-infected tomato leaf surfaces three times. Diseased shoot mass was increased by 40% upon exposure to the low dose of large-sized nHA compared to disease controls. Exposure to both nHA sizes significantly elevated phenylalanine ammonialyase activity and total phenolic content in Fusarium-infected shoots by 30-80% and 40-68%, respectively. Shoot salicylic acid content was also increased by 10-45%, suggesting the potential relationship between antioxidant and phytohormone pathways in nHA-promoted defense against fungal infection. Exposure to the high dose of both nHA sizes increased the root P content by 27-46%. A constrained analysis of principal coordinates suggests that high dose of both nHA sizes significantly altered the fatty acid profile in diseased tomato. Particularly, the diseased root C183 content was increased by 28-31% in the large-sized nHA treatments, indicating that nHA remodeled the cell membrane as part of defense against Fusarium infection. Taken together, our findings demonstrate the important role of nHA in promoting disease suppression for the sustainable use of nHA in nanoenabled agriculture.Ion current rectification (ICR), diodelike behavior in surface-charged nanopores, shows promise in the design of delivery probes for manipulation of neural networks as it can solve diffusive leakages that might be critical in clinical and research applications. However, it has not been achieved because ICR has restrictions in nanosized dimension and low electrolyte concentration, and rectification direction is inappropriate for delivery. Herein, we present a polyelectrolyte gel-filled (PGF) micropipette harnessing inverted ICR as a delivery probe, which quantitatively transports glutamate to stimulate primary cultured neurons with high efficiency while minimizing leakages. Since the gel works as an ensemble of numerous surface-charged nanopores, the current is rectified in the micro-opening and physiological environment. By extending the charge-selective region using the gel, inverted ICR is generated, which drives outward deliveries of major charge carriers. This study will help in exploring new aspects of ICR and broaden its applications for advanced chemical delivery.Urea oxidation reaction (UOR) has been proposed to replace the formidable oxygen evolution reaction (OER) to reduce the energy consumption for producing hydrogen from electrolysis of water owing to its much lower thermodynamic oxidation potential compared to that of the OER. Therefore, exploring a highly efficient and stable hydrogen evolution and urea electrooxidation bifunctional catalyst is the key to achieve economical and efficient hydrogen production. In this paper, we report a heterostructured sulfide/phosphide catalyst (Ni3S2-Ni3P/NF) synthesized via one-step thermal treatment of Ni(OH)2/NF, which allows the simultaneous occurrence of phosphorization and sulfuration. The obtained Ni3S2-Ni3P/NF catalyst shows a sheet structure with an average sheet thickness of ∼100 nm, and this sheet is composed of interconnected Ni3S2 and Ni3P nanoparticles (∼20 nm), between which there are a large number of accessible interfaces of Ni3S2-Ni3P. Thus, the Ni3S2-Ni3P/NF exhibits superior performance for both UOR and hydrogen evolution reaction (HER). For the overall urea-water electrolysis, to achieve current densities of 10 and 100 mA cm-2, cell voltage of only 1.43 and 1.65 V is required using this catalyst as both the anode and the cathode. Moreover, this catalyst also maintains fairly excellent stability after a long-term testing, indicating its potential for efficient and energy-saving hydrogen production. The theoretical calculation results show that the Ni atoms at the interface are the most efficient catalytically active site for the HER, and the free energy of hydrogen adsorption is closest to thermal neutrality, which is only 0.16 eV. A self-driven electron transfer at the interface, making the Ni3S2 sides become electron donating while Ni3P sides become electron withdrawing, may be the reason for the enhancement of the UOR activity. Therefore, this work shows an easy treatment for enhancing the catalytic activity of Ni-based materials to achieve high-efficiency urea-water electrolysis.0 Kommentare 0 Geteilt 15 Ansichten 0 Bewertungen -
Reflecting on the health promotion for people with physical impairments implies considering the specificities and meanings attributed to the life experience of each subject throughout their careers. As such, this study was designed to investigate the experience of a man with an acquired physical disability after an accident that damaged his spine. This injury caused a permanent inability to move his legs. It is a case study that used the life history technique to capture its experience. The participant was born in a rural context, and since he was a child, he had to work to help his family. At the age of 16, he started working as a chainsaw operator, and at 24, a tree fell on his ****, breaking his spine and leaving him without the movements and sensitivities of his legs. The trauma experienced by the participant caused profound changes in his life. The results demonstrated that the participant's experience does not align with the traditional experiences found in the literature in general, as the concept of biographical rupture. Sport was a vital collaboration mechanism in the rehabilitation process. Concerning health and illness, there are many spaces in the subject's experience that collaborate to expand the compression on health promotion paths. The need to depathologize the gaze on the subject's conditions is highlighted so that the understanding of health promotion processes can be amplified or reconsidered.The aim was to analyze the level and characterize the use of clinical coordination mechanisms between levels of care, and their associated factors, in two public networks of health services in Mexico. A cross-sectional study was carried out using the COORDENA questionnaire to primary and specialized care physicians in the state of Veracruz. Differences were found between networks and levels of care, according to the mechanism. In both, the referral/counter-referral is mostly used to channel the patient to another level, mainly by primary care physicians. A high reception of referrals by specialists was identified, but few counterreferences in primary care. Being a man and recognizing the primary care physician, as responsible for monitoring the patient in his/her healthcare career, were factors associated with the frequent sending of the counter-referral by specialists. The discharge report is used in both networks to send clinical information to the other level, with more sending by specialist doctors, but with less reception in primary care. https://www.selleckchem.com/products/bay-1000394.html In both networks, the follow-up to the recommendations of the mechanisms to standardize clinical care was greater by primary care physicians than specialized ones. The use of coordination mechanisms between levels of care is deficient and limited, with greater use of mechanisms to transfer information than for clinical management. The need to implement strategies that consider the participation of professionals is evident, to favor local adaptation, appropriation and improve their use.The expansion in the variety of clinical guidelines in oncology is perceptible worldwide, highlighting the need to guarantee the quality of these documents. The study thus aimed to assess the quality of Brazilian national guidelines for treatments of breast, prostate, and colon and rectal cancers. We selected 12 Brazilian guidelines published by four different drafting groups (Ministry of Health, Supplementary Health System, and medical societies and associations), and the AGREE II instrument was applied. In all these guidelines, we identified important weaknesses in more than one Domain, especially low values for "applicability" and "editorial independence". The patterns observed per Domains are more related to the drafting group than the respective clinical conditions. Lower scores in "drafting rigor" and "editorial independence" were obtained by nongovernmental drafting groups, including absence of information or lack of its transparency. Although the "clarity of presentation" in the Ministry of Health guidelines was relatively lower, all the guidelines presented major limitations in "applicability". Consequently, in the overall assessment, none of the guidelines was recommended without modifications, and four were not recommended at all. Finally, it is necessary to upgrade the guidelines according to the underlying evidence ("methodological rigor") and to present the recommended practices in a comprehensible and applicable way ("applicability"), and to mitigate conflicting interests in order to offer cancer patients the best available care in Brazil.The restoration methods applied on the areas affected by the Fundão tailings dam collapse have a high priority in Mariana region. We evaluated the effect of different restoration methods and site preparation techniques, depth and seasonality on penetration resistance of tailings, and how these predictors affect tree aboveground biomass in areas affected by the Fundão dam collapse in Mariana, Brazil. No significant differences in penetration resistance and aboveground biomass between treatments were observed, but significant differences were observed between seasonal periods. The main univariate model explained the significant effects of depth and seasonality, mainly by a negatively wet effect on penetration resistance. According to the best models (univariate and multivariate) were those that had depth as a predictor. This study showed how penetration resistance can be an indicator to select the best period for restoration process in areas affected by the collapse of the Fundão dam, but no limit to the aboveground biomass recovery on tailing.Herein we report a comparison study of the quality characteristics of tomato paste produced under atmospheric conditions and vacuum evaporation. Tomato pulp (5 Brix) was evaporated under vacuum and at atmospheric pressure using a developed evaporation equipment for household application. Various quality i.e. a* and a*/b* color values, soluble solids content, dark speck amount, titratable acidity, lycopene content and sensory properties of tomato paste were compared. The final total soluble solid contents were not affected by evaporation method whereas the lycopene content in vacuum evaporated samples was found as higher than that in the atmospheric ones at the same soluble solid content. Overall preference scores of vacuum evaporated tomato paste have approximately equal scores with the paste produced at atmospheric conditions.
Reflecting on the health promotion for people with physical impairments implies considering the specificities and meanings attributed to the life experience of each subject throughout their careers. As such, this study was designed to investigate the experience of a man with an acquired physical disability after an accident that damaged his spine. This injury caused a permanent inability to move his legs. It is a case study that used the life history technique to capture its experience. The participant was born in a rural context, and since he was a child, he had to work to help his family. At the age of 16, he started working as a chainsaw operator, and at 24, a tree fell on his back, breaking his spine and leaving him without the movements and sensitivities of his legs. The trauma experienced by the participant caused profound changes in his life. The results demonstrated that the participant's experience does not align with the traditional experiences found in the literature in general, as the concept of biographical rupture. Sport was a vital collaboration mechanism in the rehabilitation process. Concerning health and illness, there are many spaces in the subject's experience that collaborate to expand the compression on health promotion paths. The need to depathologize the gaze on the subject's conditions is highlighted so that the understanding of health promotion processes can be amplified or reconsidered.The aim was to analyze the level and characterize the use of clinical coordination mechanisms between levels of care, and their associated factors, in two public networks of health services in Mexico. A cross-sectional study was carried out using the COORDENA questionnaire to primary and specialized care physicians in the state of Veracruz. Differences were found between networks and levels of care, according to the mechanism. In both, the referral/counter-referral is mostly used to channel the patient to another level, mainly by primary care physicians. A high reception of referrals by specialists was identified, but few counterreferences in primary care. Being a man and recognizing the primary care physician, as responsible for monitoring the patient in his/her healthcare career, were factors associated with the frequent sending of the counter-referral by specialists. The discharge report is used in both networks to send clinical information to the other level, with more sending by specialist doctors, but with less reception in primary care. https://www.selleckchem.com/products/bay-1000394.html In both networks, the follow-up to the recommendations of the mechanisms to standardize clinical care was greater by primary care physicians than specialized ones. The use of coordination mechanisms between levels of care is deficient and limited, with greater use of mechanisms to transfer information than for clinical management. The need to implement strategies that consider the participation of professionals is evident, to favor local adaptation, appropriation and improve their use.The expansion in the variety of clinical guidelines in oncology is perceptible worldwide, highlighting the need to guarantee the quality of these documents. The study thus aimed to assess the quality of Brazilian national guidelines for treatments of breast, prostate, and colon and rectal cancers. We selected 12 Brazilian guidelines published by four different drafting groups (Ministry of Health, Supplementary Health System, and medical societies and associations), and the AGREE II instrument was applied. In all these guidelines, we identified important weaknesses in more than one Domain, especially low values for "applicability" and "editorial independence". The patterns observed per Domains are more related to the drafting group than the respective clinical conditions. Lower scores in "drafting rigor" and "editorial independence" were obtained by nongovernmental drafting groups, including absence of information or lack of its transparency. Although the "clarity of presentation" in the Ministry of Health guidelines was relatively lower, all the guidelines presented major limitations in "applicability". Consequently, in the overall assessment, none of the guidelines was recommended without modifications, and four were not recommended at all. Finally, it is necessary to upgrade the guidelines according to the underlying evidence ("methodological rigor") and to present the recommended practices in a comprehensible and applicable way ("applicability"), and to mitigate conflicting interests in order to offer cancer patients the best available care in Brazil.The restoration methods applied on the areas affected by the Fundão tailings dam collapse have a high priority in Mariana region. We evaluated the effect of different restoration methods and site preparation techniques, depth and seasonality on penetration resistance of tailings, and how these predictors affect tree aboveground biomass in areas affected by the Fundão dam collapse in Mariana, Brazil. No significant differences in penetration resistance and aboveground biomass between treatments were observed, but significant differences were observed between seasonal periods. The main univariate model explained the significant effects of depth and seasonality, mainly by a negatively wet effect on penetration resistance. According to the best models (univariate and multivariate) were those that had depth as a predictor. This study showed how penetration resistance can be an indicator to select the best period for restoration process in areas affected by the collapse of the Fundão dam, but no limit to the aboveground biomass recovery on tailing.Herein we report a comparison study of the quality characteristics of tomato paste produced under atmospheric conditions and vacuum evaporation. Tomato pulp (5 Brix) was evaporated under vacuum and at atmospheric pressure using a developed evaporation equipment for household application. Various quality i.e. a* and a*/b* color values, soluble solids content, dark speck amount, titratable acidity, lycopene content and sensory properties of tomato paste were compared. The final total soluble solid contents were not affected by evaporation method whereas the lycopene content in vacuum evaporated samples was found as higher than that in the atmospheric ones at the same soluble solid content. Overall preference scores of vacuum evaporated tomato paste have approximately equal scores with the paste produced at atmospheric conditions.0 Kommentare 0 Geteilt 7 Ansichten 0 Bewertungen -
This study aimed to compare the effect of the Aerobic and Pilates exercises on mental health in inactive older women. Seventy-five inactive aged women were randomly divided into three groups (n = 25); aerobic (62.48 ± 2.87 years), Pilates (62.66 ± 1.68 years), and control group (63.80 ± 3.35 years). The Goldberg General Health Questionnaire assessed mental health. The exercise program was performed for 12 weeks. The results indicate that Pilates exercises are more valuable than aerobic training in depression (p ≤ .05). https://www.selleckchem.com/products/aprocitentan.html However, in other mental health components, the difference between the two exercise groups was not statistically significant. According to our results, physical activity, particularly Pilates and aerobic exercises, improves physical health and has a close correlation with the mental health of inactive older women. These results highlight the role of these physical exercise training in older women.Purpose To assess content, readability, and accountability of online information for patients regarding epiretinal membranes (ERMs).Methods Cross-sectional study evaluating nine major medical websites on ERMs. Fifteen questions assessed patient-relevant content. Four indices estimated U.S. grade literacy level of the text. JAMA benchmarks (authorship, attribution, disclosure, currency) evaluated website accountability.Results Average content score was 36.78 (SD 13.91, 95% CI ±0.64) from a possible maximum of 60, with significant variability between websites (H = 22.68, p=0.004). Mean reading grade level was 12.29 (SD 2.30, 95% CI ±1.50). No website achieved all JAMA benchmarks; only one website fulfilled three of the four. Content score did not correlate with Google rank (order of listed websites, r = -0.23, p=0.55) or JAMA benchmarks (r = 0.19, p=0.62) but significantly correlated with mean reading grade (r = 0.67, p=0.05).Conclusion Online information regarding ERMs varies significantly, may not adequately answer common patient questions, and is written at too complex a literacy level for the average patient.Background We aimed to determine the optimal range of discharge serum magnesium in hospitalized patients by evaluating one-year mortality risk according to discharge serum magnesium.Methods This was a single-center cohort study of hospitalized adult patients who survived until hospital discharge. We classified discharge serum magnesium, defined as the last serum magnesium within 48 hours of hospital discharge, into ≤1.6, 1.7-1.8, 1.9-2.0, 2.1-2.2, and ≥2.3 mg/dL. We assessed one-year mortality risk after hospital discharge based on discharge serum magnesium, using discharge magnesium of 2.1-2.2 mg/dL as the reference group.Results Of 39,193 eligible patients, 8%, 23%, 34%, 23%, and 12% had a serum magnesium of ≤1.6, 1.7-1.8, 1.9-2.0, 2.1-2.2, and ≥2.3 mg/dL, respectively, at hospital discharge. After the adjustment for several confounders, discharge serum magnesium of ≤1.6, 1.7-1.8, and ≥2.3 mg/dL were associated with higher one-year mortality with hazard ratio of 1.35 (95% CI 1.21-1.50), 1.14 (95% CI 1.06-1.24), and 1.17 (95% CI 1.07-1.28), respectively, compared to discharge serum magnesium of 2.1-2.2 mg/dL. There was no significant difference in one-year mortality between patients with discharge serum magnesium of 1.9-2.0 and 2.1-2.2 mg/dL.Conclusion The optimal range of serum magnesium at discharge was 1.9-2.2 mg/dL. Both hypomagnesemia and hypermagnesemia at discharge were associated with higher one-year mortality.Background and Objective To simulate infant skull trauma after low height falls when variable degrees of ossification of the sutures are present. Methods A finite elements model of a four-week-old infant skull was developed for simulating low height impact from 30 cm and 50 cm falls. Two impacts were simulated An occipito-parietal impact on the lambdoid suture and a lateral impact on the right parietal and six cases were considered unossified and fully ossified sutures, and sagittal, metopic, right lambdoid and right coronal craniosynostosis. Results 26 simulations were performed. Results showed a marked increase in strain magnitudes in skulls with unossified sutures and fontanels. Higher deformations and lower Von Mises stress in the brain were found in occipital impacts. Fully ossified skulls showed less overall deformation and lower Von Mises stress in the brain. Results suggest that neonate skull impact when falling backward has a higher probability of resulting in permanent damage. Conclusion This work shows an initial approximation to the mechanisms underlying TBI in neonates when exposed to low height falls common in household environments, and could be used as a starting point in the design and development of cranial orthoses and protective devices for preventing or mitigating TBI.Using a microfluidic platform to apply negative aspiration pressure (-20, -25, -30, -35 and -40 cm H2O), we compared the differences in creep responses of Glioblastoma Multiforme (GBM) cells while migrating in confinement and at a stationary state on a 2D substrate. Cells were either migrating in a channel of 5 x 5 μm cross-section or stationary at the entrance to the channel. In response to aspiration pressure, we found actively migrating GBM cells exhibited a higher stiffness than stationary cells. Additionally, migrating cells absorbed more energy elastically with a relatively small dissipative energy loss. At elevated negative pressure loads up to - 30 cm H2O, we observed a linear increase in elastic deformation and a higher distribution in elastic storage than energy loss, and the response plateaued at further increasing negative pressure loads. To explore the underlying cause, we carried out immuno-cytochemical studies of these cells and found a polarized actin and myosin distribution at the front and posterior ends of the migrating cells, whereas the distribution of the stationary group demonstrated no specific regional differences. These differences in creep response and cytoskeletal protein distribution demonstrate the importance of a migrating cell's kinematic state to the mechanism of cell migration.
This study aimed to compare the effect of the Aerobic and Pilates exercises on mental health in inactive older women. Seventy-five inactive aged women were randomly divided into three groups (n = 25); aerobic (62.48 ± 2.87 years), Pilates (62.66 ± 1.68 years), and control group (63.80 ± 3.35 years). The Goldberg General Health Questionnaire assessed mental health. The exercise program was performed for 12 weeks. The results indicate that Pilates exercises are more valuable than aerobic training in depression (p ≤ .05). https://www.selleckchem.com/products/aprocitentan.html However, in other mental health components, the difference between the two exercise groups was not statistically significant. According to our results, physical activity, particularly Pilates and aerobic exercises, improves physical health and has a close correlation with the mental health of inactive older women. These results highlight the role of these physical exercise training in older women.Purpose To assess content, readability, and accountability of online information for patients regarding epiretinal membranes (ERMs).Methods Cross-sectional study evaluating nine major medical websites on ERMs. Fifteen questions assessed patient-relevant content. Four indices estimated U.S. grade literacy level of the text. JAMA benchmarks (authorship, attribution, disclosure, currency) evaluated website accountability.Results Average content score was 36.78 (SD 13.91, 95% CI ±0.64) from a possible maximum of 60, with significant variability between websites (H = 22.68, p=0.004). Mean reading grade level was 12.29 (SD 2.30, 95% CI ±1.50). No website achieved all JAMA benchmarks; only one website fulfilled three of the four. Content score did not correlate with Google rank (order of listed websites, r = -0.23, p=0.55) or JAMA benchmarks (r = 0.19, p=0.62) but significantly correlated with mean reading grade (r = 0.67, p=0.05).Conclusion Online information regarding ERMs varies significantly, may not adequately answer common patient questions, and is written at too complex a literacy level for the average patient.Background We aimed to determine the optimal range of discharge serum magnesium in hospitalized patients by evaluating one-year mortality risk according to discharge serum magnesium.Methods This was a single-center cohort study of hospitalized adult patients who survived until hospital discharge. We classified discharge serum magnesium, defined as the last serum magnesium within 48 hours of hospital discharge, into ≤1.6, 1.7-1.8, 1.9-2.0, 2.1-2.2, and ≥2.3 mg/dL. We assessed one-year mortality risk after hospital discharge based on discharge serum magnesium, using discharge magnesium of 2.1-2.2 mg/dL as the reference group.Results Of 39,193 eligible patients, 8%, 23%, 34%, 23%, and 12% had a serum magnesium of ≤1.6, 1.7-1.8, 1.9-2.0, 2.1-2.2, and ≥2.3 mg/dL, respectively, at hospital discharge. After the adjustment for several confounders, discharge serum magnesium of ≤1.6, 1.7-1.8, and ≥2.3 mg/dL were associated with higher one-year mortality with hazard ratio of 1.35 (95% CI 1.21-1.50), 1.14 (95% CI 1.06-1.24), and 1.17 (95% CI 1.07-1.28), respectively, compared to discharge serum magnesium of 2.1-2.2 mg/dL. There was no significant difference in one-year mortality between patients with discharge serum magnesium of 1.9-2.0 and 2.1-2.2 mg/dL.Conclusion The optimal range of serum magnesium at discharge was 1.9-2.2 mg/dL. Both hypomagnesemia and hypermagnesemia at discharge were associated with higher one-year mortality.Background and Objective To simulate infant skull trauma after low height falls when variable degrees of ossification of the sutures are present. Methods A finite elements model of a four-week-old infant skull was developed for simulating low height impact from 30 cm and 50 cm falls. Two impacts were simulated An occipito-parietal impact on the lambdoid suture and a lateral impact on the right parietal and six cases were considered unossified and fully ossified sutures, and sagittal, metopic, right lambdoid and right coronal craniosynostosis. Results 26 simulations were performed. Results showed a marked increase in strain magnitudes in skulls with unossified sutures and fontanels. Higher deformations and lower Von Mises stress in the brain were found in occipital impacts. Fully ossified skulls showed less overall deformation and lower Von Mises stress in the brain. Results suggest that neonate skull impact when falling backward has a higher probability of resulting in permanent damage. Conclusion This work shows an initial approximation to the mechanisms underlying TBI in neonates when exposed to low height falls common in household environments, and could be used as a starting point in the design and development of cranial orthoses and protective devices for preventing or mitigating TBI.Using a microfluidic platform to apply negative aspiration pressure (-20, -25, -30, -35 and -40 cm H2O), we compared the differences in creep responses of Glioblastoma Multiforme (GBM) cells while migrating in confinement and at a stationary state on a 2D substrate. Cells were either migrating in a channel of 5 x 5 μm cross-section or stationary at the entrance to the channel. In response to aspiration pressure, we found actively migrating GBM cells exhibited a higher stiffness than stationary cells. Additionally, migrating cells absorbed more energy elastically with a relatively small dissipative energy loss. At elevated negative pressure loads up to - 30 cm H2O, we observed a linear increase in elastic deformation and a higher distribution in elastic storage than energy loss, and the response plateaued at further increasing negative pressure loads. To explore the underlying cause, we carried out immuno-cytochemical studies of these cells and found a polarized actin and myosin distribution at the front and posterior ends of the migrating cells, whereas the distribution of the stationary group demonstrated no specific regional differences. These differences in creep response and cytoskeletal protein distribution demonstrate the importance of a migrating cell's kinematic state to the mechanism of cell migration.0 Kommentare 0 Geteilt 6 Ansichten 0 Bewertungen -
nges in tumour size and the biomarker alpha-fetoprotein) and the deterioration of liver function is less in those who have the hepatitis C virus, than in those who do not.
Focal adhesion kinase (FAK) is a non-receptor tyrosine kinase upregulated in many tumor types and a promising target for cancer therapy. Here, we elucidated the functional role of FAK in intrahepatic cholangiocarcinoma (iCCA) development and progression.
Expression levels and activation status of FAK were determined in human iCCA samples. The functional contribution of FAK to Akt/YAP murine iCCA initiation and progression was investigated using conditional Fak KO **** and constitutive Cre or inducible Cre ****, respectively. The oncogenic potential of FAK was further examined via overexpression of FAK in ****. In vitro cell line studies and in vivo drug treatment were applied to address the therapeutic potential of targeting FAK for iCCA treatment.
FAK was ubiquitously upregulated and activated in iCCA lesions. Ablation of FAK strongly delayed Akt/YAP driven mouse iCCA initiation. FAK overexpression synergized with activated AKT to promote iCCA development and accelerated Akt/Jag1-driven cholangiocarcinitor treatment is highly detrimental for the growth of in vitro and in vivo iCCA models. This combination therapy might represent a valuable and novel treatment against human iCCA.
We found that Focal Adhesion Kinase (FAK) is upregulated and activated in human and mouse intrahepatic cholangiocarcinoma (iCCA) samples. FAK promotes iCCA development, whereas deletion of FAK strongly suppresses iCCA initiation and progression. Mechanistically, we discovered that FAK regulates the YAP pathway. Combined FAK and CDK4/6 inhibitor treatment is highly detrimental for the growth of in vitro and in vivo iCCA models. This combination therapy might represent a valuable and novel treatment against human iCCA.
Porto-sinusoidal vascular disease (PSVD) is a rare vascular liver disease of unknown etiology that causes portal hypertension. It usually affects young individuals and shortens live expectancy. The deregulated pathways involved in PSVD development are unknown and therefore we lack curative treatments. The purpose of this study was to integrate transcriptomic and clinical data by comprehensive network-based modeling in order to uncover altered biological processes in patients with PSVD.
We obtained liver tissue samples from 20 consecutive patients with PSVD and 21 sex- and age-matched patients with cirrhosis and 13 histologically normal livers (HNL) (initial cohort) and performed transcriptomic analysis. Microarray data were analyzed using weighted gene correlation network analysis to identify clusters of highly correlated genes differently expressed in patients with PSVD. We next evaluated the molecular pathways enriched in patients with PSVD and the core-related genes from the most significantly enrichedems biology approach, we identify that pathways regulating endothelial function and tone may act as drivers of porto-sinusoidal vascular disease.
Porto-sinusoidal vascular disease is a rare but life-shortening disease that affects mainly young people. Knowledge of the disrupted pathways involved in its development will help to identify novel therapeutic targets and new treatments. Using a systems biology approach, we identify that pathways regulating endothelial function and tone may act as drivers of porto-sinusoidal vascular disease.We consider Bazykin's model to address harvesting induced stability exchanges through bifurcation analysis. We examine the existence of hydra effects and analyze the stock pattern under predator harvesting. Prey harvesting cannot produce hydra effects in our model, whereas predator harvesting may cause multiple hydra effects. Our study reveals that type II response function and mutual interference among predators jointly induce multiple hydra effects and bistability. Bifurcations such as single Hopf-bifurcation, multiple Hopf-bifurcations and multiple saddle-node bifurcations appear for increasing harvesting rate on the predators. However, over-exploitation of the predators cannot generate any such bifurcation in our study. In simulations, the maximum sustainable yield (MSY) exists at a globally stable state. When predator is culled under increasing effort, basin of attraction of the equilibrium corresponding to the higher predator stock gets expanded, which alternatively is in favor of stock benefit for predators. The ecological theory developed in this study might be useful to understand conservation policy and fishery management.Stenotrophomonas maltophilia is a common conditional pathogen, and it is naturally resistant to most commonly used clinical antibiotics. The bacteriophage is considered to be a potential antibiotic alternative for treating multi-drug-resistant bacteria. In this study, a bacteriophage BUCT555 was isolated from hospital sewage for lysing the clinical multi-drug resistant Stenotrophomonas maltophilia. Electron microscopy studies revealed this phage belongs to the Podoviridae family. The double-stranded DNA genome of bacteriophage BUCT555 is composed of 39,440 bp with a GC content of 61.43%. The genome contains 57 open reading frames, 14 of which had assigned functions, while no virulence related genes, antibiotic resistance genes or tRNA were identified. The burst size of BUCT555 was 204 pfu per infected cell. https://www.selleckchem.com/products/vvd-214.html Structure proteins of bacteriophage BUCT555 generated by SDS-PAGE and HPLC-MS revealed that it contains seven proteins with molecular weight ranging from 19 to 89 kDa. BLASTn analysis showed that phage BUCT555 has 2% homology with other phages in NCBI database, suggesting BUCT555 is a new phage genus of Podoviridae that infects Stenotrophomonas maltophilia. Characterization of the bacteriophage BUCT555 enriches our knowledge about the diversity of Stenotrophomonas maltophilia bacteriophages.
This study examined post-exercise glycemic variability in individuals with type 1 diabetes after acute bouts of resistance (RE) and aerobic exercise (AE) compared to a no-exercise day (CON). We hypothesized that exercise days would have greater glucose variability (standard deviation - SD, coefficient of variation - CV), and less time in range (TIR), compared to CON.
A secondary analysis was conducted on previously collected data. Twelve active participants with type 1 diabetes performed three testing sessions in random order with at least 48h in between AE (45-min treadmill run at 60%VO
), RE (three sets of eight repetitions, seven weight-lifting exercises), and CON (45-min no-exercise control). Interstitial glucose levels were monitored by blinded continuous glucose monitoring (CGM). Glycemic variability was evaluated for 0-6h, overnight (0000-0600) and 24h after exercise.
Mean CGM glucose, TIR, and time above/below range were similar among conditions (P>0.05). Lower SD (0.8 [0.5-1.1], 1.4 [0.9-2.
nges in tumour size and the biomarker alpha-fetoprotein) and the deterioration of liver function is less in those who have the hepatitis C virus, than in those who do not. Focal adhesion kinase (FAK) is a non-receptor tyrosine kinase upregulated in many tumor types and a promising target for cancer therapy. Here, we elucidated the functional role of FAK in intrahepatic cholangiocarcinoma (iCCA) development and progression. Expression levels and activation status of FAK were determined in human iCCA samples. The functional contribution of FAK to Akt/YAP murine iCCA initiation and progression was investigated using conditional Fak KO mice and constitutive Cre or inducible Cre mice, respectively. The oncogenic potential of FAK was further examined via overexpression of FAK in mice. In vitro cell line studies and in vivo drug treatment were applied to address the therapeutic potential of targeting FAK for iCCA treatment. FAK was ubiquitously upregulated and activated in iCCA lesions. Ablation of FAK strongly delayed Akt/YAP driven mouse iCCA initiation. FAK overexpression synergized with activated AKT to promote iCCA development and accelerated Akt/Jag1-driven cholangiocarcinitor treatment is highly detrimental for the growth of in vitro and in vivo iCCA models. This combination therapy might represent a valuable and novel treatment against human iCCA. We found that Focal Adhesion Kinase (FAK) is upregulated and activated in human and mouse intrahepatic cholangiocarcinoma (iCCA) samples. FAK promotes iCCA development, whereas deletion of FAK strongly suppresses iCCA initiation and progression. Mechanistically, we discovered that FAK regulates the YAP pathway. Combined FAK and CDK4/6 inhibitor treatment is highly detrimental for the growth of in vitro and in vivo iCCA models. This combination therapy might represent a valuable and novel treatment against human iCCA. Porto-sinusoidal vascular disease (PSVD) is a rare vascular liver disease of unknown etiology that causes portal hypertension. It usually affects young individuals and shortens live expectancy. The deregulated pathways involved in PSVD development are unknown and therefore we lack curative treatments. The purpose of this study was to integrate transcriptomic and clinical data by comprehensive network-based modeling in order to uncover altered biological processes in patients with PSVD. We obtained liver tissue samples from 20 consecutive patients with PSVD and 21 sex- and age-matched patients with cirrhosis and 13 histologically normal livers (HNL) (initial cohort) and performed transcriptomic analysis. Microarray data were analyzed using weighted gene correlation network analysis to identify clusters of highly correlated genes differently expressed in patients with PSVD. We next evaluated the molecular pathways enriched in patients with PSVD and the core-related genes from the most significantly enrichedems biology approach, we identify that pathways regulating endothelial function and tone may act as drivers of porto-sinusoidal vascular disease. Porto-sinusoidal vascular disease is a rare but life-shortening disease that affects mainly young people. Knowledge of the disrupted pathways involved in its development will help to identify novel therapeutic targets and new treatments. Using a systems biology approach, we identify that pathways regulating endothelial function and tone may act as drivers of porto-sinusoidal vascular disease.We consider Bazykin's model to address harvesting induced stability exchanges through bifurcation analysis. We examine the existence of hydra effects and analyze the stock pattern under predator harvesting. Prey harvesting cannot produce hydra effects in our model, whereas predator harvesting may cause multiple hydra effects. Our study reveals that type II response function and mutual interference among predators jointly induce multiple hydra effects and bistability. Bifurcations such as single Hopf-bifurcation, multiple Hopf-bifurcations and multiple saddle-node bifurcations appear for increasing harvesting rate on the predators. However, over-exploitation of the predators cannot generate any such bifurcation in our study. In simulations, the maximum sustainable yield (MSY) exists at a globally stable state. When predator is culled under increasing effort, basin of attraction of the equilibrium corresponding to the higher predator stock gets expanded, which alternatively is in favor of stock benefit for predators. The ecological theory developed in this study might be useful to understand conservation policy and fishery management.Stenotrophomonas maltophilia is a common conditional pathogen, and it is naturally resistant to most commonly used clinical antibiotics. The bacteriophage is considered to be a potential antibiotic alternative for treating multi-drug-resistant bacteria. In this study, a bacteriophage BUCT555 was isolated from hospital sewage for lysing the clinical multi-drug resistant Stenotrophomonas maltophilia. Electron microscopy studies revealed this phage belongs to the Podoviridae family. The double-stranded DNA genome of bacteriophage BUCT555 is composed of 39,440 bp with a GC content of 61.43%. The genome contains 57 open reading frames, 14 of which had assigned functions, while no virulence related genes, antibiotic resistance genes or tRNA were identified. The burst size of BUCT555 was 204 pfu per infected cell. https://www.selleckchem.com/products/vvd-214.html Structure proteins of bacteriophage BUCT555 generated by SDS-PAGE and HPLC-MS revealed that it contains seven proteins with molecular weight ranging from 19 to 89 kDa. BLASTn analysis showed that phage BUCT555 has 2% homology with other phages in NCBI database, suggesting BUCT555 is a new phage genus of Podoviridae that infects Stenotrophomonas maltophilia. Characterization of the bacteriophage BUCT555 enriches our knowledge about the diversity of Stenotrophomonas maltophilia bacteriophages. This study examined post-exercise glycemic variability in individuals with type 1 diabetes after acute bouts of resistance (RE) and aerobic exercise (AE) compared to a no-exercise day (CON). We hypothesized that exercise days would have greater glucose variability (standard deviation - SD, coefficient of variation - CV), and less time in range (TIR), compared to CON. A secondary analysis was conducted on previously collected data. Twelve active participants with type 1 diabetes performed three testing sessions in random order with at least 48h in between AE (45-min treadmill run at 60%VO ), RE (three sets of eight repetitions, seven weight-lifting exercises), and CON (45-min no-exercise control). Interstitial glucose levels were monitored by blinded continuous glucose monitoring (CGM). Glycemic variability was evaluated for 0-6h, overnight (0000-0600) and 24h after exercise. Mean CGM glucose, TIR, and time above/below range were similar among conditions (P>0.05). Lower SD (0.8 [0.5-1.1], 1.4 [0.9-2.0 Kommentare 0 Geteilt 3 Ansichten 0 Bewertungen -
Clustering analysis revealed some typical trajectories performed by specific sub-groups. The eye-tracking results were consolidated by the participants' answers during the focus group.Viewing artworks may be subject to the same processes as everyday scene selection in respect of gaze behaviour. However, artists may employ carefully constructed composition in their paintings to lead the eyes of viewers along a predetermined path. This paper investigates whether composition is successful through comparison of expected scanpaths (constructed using the known intention of the artist) and actual scanpaths (as captured using an eye-tracker) based on a loci and sequence similarity index. The findings suggest that composition is successful in leading the eye, although the order of fixations can vary. It could thus be concluded that composition is largely successful in terms of salient elements, but less so for guiding elements. Furthermore, using Cognitive Linguistics theories and applying it to the paintings with reference to the statistical results, the Art Creation Continuum that captures the role of composition on a spectrum is proposed.At the threshold of the digital era, Zuzana Licko was of the opinion that familiar letterforms owe legibility to centuries-long exposure and that all new, prototypically unmatching forms would be equally legible if used as frequently. This paper examined the legibility in the context of familiarity - is it affected by the time of exposure to a particular typeface or a typeface's universal structure. We ran repeated measures tests with exposure period in-between. The experiment was conducted using for this purpose designed typefaces as stimuli, and the eye-tracking on-screen reading technology. The results confirmed that one's familiarity with a typeface influences one's reading speed. The universal letter structure, recognised by Frutiger as the prototype skeleton, is the constant that a priori provides legibility. On the other hand, the period of exposure to uncommon letterforms also has a positive impact on legibility. Therefore, considering that the period of familiarity with the humanist letterforms has been continuous since their establishment, the maxim from the dawn of the digital era can be regarded as valid.There is increasing awareness that the perception of art is affected by the way it is presented. In 2018, the Austrian Gallery Belvedere redisplayed its permanent collection. Our multidisciplinary team seized this opportunity to investigate the viewing behavior of specific artworks both before and after the museum's rearrangement. In contrast to previous mobile eye tracking (MET) studies in museums, this study benefits from the comparison of two realistic display conditions (without any research interference), an unconstrained study design (working with regular museum visitors), and a large data sample (comprising 259 participants). We employed a mixed-method approach that combined mobile eye tracking, subjective mapping (a drawing task in conjunction with an open interview), and a questionnaire in order to relate gaze patterns to processes of meaning-making. Our results show that the new display made a difference in that it 1) generally increased the viewing times of the artworks; 2) clearly extended the reading times of labels; and 3) deepened visitors' engagement with the artworks in their exhibition reflections. In contrast, interest in specific artworks and art form preferences proved to be robust and independent of presentation modes.Classifying artists and their work as distinct art styles has been an important task of scholars in the field of art history. Due to its subjectivity, scholars often contradict one another. Our project investigated differences in aesthetic qualities of seven art styles through quantitative means. This was achieved with state-of-the-art deep-learning paradigms to generate new images resembling the style of an artist or entire era. We conducted psychological experiments to measure the behavior of subjects when viewing these new art images. https://www.selleckchem.com/products/chlorin-e6.html Two different experiments were used In an eye-tracking study, subjects viewed art-stylespecific generated images. Eye movements were recorded and then compared between art styles. In a visual singleton search study, subjects had to locate a style-outlier image among three images of an alternative style. Reaction time and accuracy were measured and analyzed. These experiments show that there are measurable differences in behavior when viewing images of varying art styles. From these differences, we constructed hierarchical clusterings relating art styles based on the different behaviors of subjects viewing the samples. Our study reveals a novel perspective on the classification of artworks into stylistic eras and motivates future research in the domain of empirical aesthetics through quantitative means.Eye tracking research in art viewership is often conducted in a laboratory setting where reproductions must be used in place of original art works and the viewing environment is less natural than in a museum. Recent technological developments have made museum studies possible but head-mounted eye tracking gear and interruptions by researchers still influence the experience of the viewer. In order to find a more ecologically valid way of recording eye movements while viewing artworks, we employed a prototype of a calibrationfree remote eye tracker hidden below selected paintings at the Kunsthistorisches Museum in Vienna. Museum visitors were unaware of the study and informed post hoc that we had registered their viewing behavior and asked to give consent for the use of their data. This article presents the study design as well as results from over 800 participants. While the data quality from the eye tracker prototype was not sufficient to conduct the intended analysis on within-painting gaze movements, this study might serve as a step towards an unobtrusive examination of the art viewing experience. It was possible to analyze time spent viewing paintings and those results show that certain paintings consistently drew significantly more prolonged attention from viewers.
Clustering analysis revealed some typical trajectories performed by specific sub-groups. The eye-tracking results were consolidated by the participants' answers during the focus group.Viewing artworks may be subject to the same processes as everyday scene selection in respect of gaze behaviour. However, artists may employ carefully constructed composition in their paintings to lead the eyes of viewers along a predetermined path. This paper investigates whether composition is successful through comparison of expected scanpaths (constructed using the known intention of the artist) and actual scanpaths (as captured using an eye-tracker) based on a loci and sequence similarity index. The findings suggest that composition is successful in leading the eye, although the order of fixations can vary. It could thus be concluded that composition is largely successful in terms of salient elements, but less so for guiding elements. Furthermore, using Cognitive Linguistics theories and applying it to the paintings with reference to the statistical results, the Art Creation Continuum that captures the role of composition on a spectrum is proposed.At the threshold of the digital era, Zuzana Licko was of the opinion that familiar letterforms owe legibility to centuries-long exposure and that all new, prototypically unmatching forms would be equally legible if used as frequently. This paper examined the legibility in the context of familiarity - is it affected by the time of exposure to a particular typeface or a typeface's universal structure. We ran repeated measures tests with exposure period in-between. The experiment was conducted using for this purpose designed typefaces as stimuli, and the eye-tracking on-screen reading technology. The results confirmed that one's familiarity with a typeface influences one's reading speed. The universal letter structure, recognised by Frutiger as the prototype skeleton, is the constant that a priori provides legibility. On the other hand, the period of exposure to uncommon letterforms also has a positive impact on legibility. Therefore, considering that the period of familiarity with the humanist letterforms has been continuous since their establishment, the maxim from the dawn of the digital era can be regarded as valid.There is increasing awareness that the perception of art is affected by the way it is presented. In 2018, the Austrian Gallery Belvedere redisplayed its permanent collection. Our multidisciplinary team seized this opportunity to investigate the viewing behavior of specific artworks both before and after the museum's rearrangement. In contrast to previous mobile eye tracking (MET) studies in museums, this study benefits from the comparison of two realistic display conditions (without any research interference), an unconstrained study design (working with regular museum visitors), and a large data sample (comprising 259 participants). We employed a mixed-method approach that combined mobile eye tracking, subjective mapping (a drawing task in conjunction with an open interview), and a questionnaire in order to relate gaze patterns to processes of meaning-making. Our results show that the new display made a difference in that it 1) generally increased the viewing times of the artworks; 2) clearly extended the reading times of labels; and 3) deepened visitors' engagement with the artworks in their exhibition reflections. In contrast, interest in specific artworks and art form preferences proved to be robust and independent of presentation modes.Classifying artists and their work as distinct art styles has been an important task of scholars in the field of art history. Due to its subjectivity, scholars often contradict one another. Our project investigated differences in aesthetic qualities of seven art styles through quantitative means. This was achieved with state-of-the-art deep-learning paradigms to generate new images resembling the style of an artist or entire era. We conducted psychological experiments to measure the behavior of subjects when viewing these new art images. https://www.selleckchem.com/products/chlorin-e6.html Two different experiments were used In an eye-tracking study, subjects viewed art-stylespecific generated images. Eye movements were recorded and then compared between art styles. In a visual singleton search study, subjects had to locate a style-outlier image among three images of an alternative style. Reaction time and accuracy were measured and analyzed. These experiments show that there are measurable differences in behavior when viewing images of varying art styles. From these differences, we constructed hierarchical clusterings relating art styles based on the different behaviors of subjects viewing the samples. Our study reveals a novel perspective on the classification of artworks into stylistic eras and motivates future research in the domain of empirical aesthetics through quantitative means.Eye tracking research in art viewership is often conducted in a laboratory setting where reproductions must be used in place of original art works and the viewing environment is less natural than in a museum. Recent technological developments have made museum studies possible but head-mounted eye tracking gear and interruptions by researchers still influence the experience of the viewer. In order to find a more ecologically valid way of recording eye movements while viewing artworks, we employed a prototype of a calibrationfree remote eye tracker hidden below selected paintings at the Kunsthistorisches Museum in Vienna. Museum visitors were unaware of the study and informed post hoc that we had registered their viewing behavior and asked to give consent for the use of their data. This article presents the study design as well as results from over 800 participants. While the data quality from the eye tracker prototype was not sufficient to conduct the intended analysis on within-painting gaze movements, this study might serve as a step towards an unobtrusive examination of the art viewing experience. It was possible to analyze time spent viewing paintings and those results show that certain paintings consistently drew significantly more prolonged attention from viewers.0 Kommentare 0 Geteilt 19 Ansichten 0 Bewertungen
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