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9 المنشورات
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0 الصور
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0 الفيديوهات
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Male
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13/06/1970
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متابَع بواسطة 0 أشخاص
التحديثات الأخيرة
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These results indicate that the trap depth of Yb3+ becomes deeper and that of Cr3+ becomes shallower with increasing pressure. Based on the pressure-dependence of the luminescence quenching and the trap depth change estimated from the decay slopes, the relative electronic energies of the CB bottom and the Yb2+ (4f14) or Cr2+ (3d4) levels are discussed. The CB bottom energy is increased relative to the ground 1S0 state of Yb2+ with increasing pressure, which results in deepening of the electron trap depth of the Yb2+ state. The opposite tendency of the Cr3+ codoped sample was described by a decreasing tendency of the energy gap between the CB bottom and the Cr2+eg level, the relative energy level of which is increased by the increase of the crystal field with increasing pressure in the garnet host material, where the electron-trapping Cr2+ ions take the high spin state (t32ge1g) rather than the low-spin state (t42g).We developed a new class of turn-on fluorescent probes for an esterase. After the esterase-mediated hydrolysis produced carboxylate (as a fluorescence activator), the fluorescence intensity was markedly increased through the detachment of a quencher moiety from the quenched Cy5 fluorophore. Because the probes based on this new activator-induced quencher-detachment (AiQd) adopt a non-immolative linker between the cleavable site and the fluorophore, the rate of the enzymatic reaction is greatly improved, without the generation of any by-products.Correction for 'An amplification-free colorimetric test for sensitive DNA detection based on the capturing of gold nanoparticle clusters' by Giuseppina Tatulli, et al., Nanoscale, 2020, 12, 15604-15610, DOI .A nitrate-promoted Pd-catalysed mild cross-dehydrogenative C(sp2)-H bond oxidation of oximes or azobenzenes with diverse carboxylic acids has been developed. In contrast to the previous catalytic systems, this protocol features mild conditions (close to room temperature for most cases) and a broad substrate scope (up to 64 examples), thus constituting a versatile method to directly prepare diverse O-aryl esters. Moreover, the superiority of the nitrate additive in this mild transformation was further determined by experimental and computational evidence.An efficient approach to install deuterium into mono-fluorinated (hetero)arenes by a Ag2CO3/Sphos-mediated HIE protocol with D2O as the deuterium source has been disclosed. https://www.selleckchem.com/products/bi-d1870.html This method showed a specific site selectivity of deuteration at the α-position of the fluorine atom, which is complementary to the existing transition metal-catalyzed HIE process.We present a simple way to build up well-controlled coacervate-core dendrimicelles by assembly of anionic PAMAM dendrimers with a cationic-neutral diblock copolymer. Upon increasing pH, the formation of micellar structures shows constant size but the number of dendrimer molecules incorporated in one micelle decreases, following the charge stoichiometry formation rules; concomitantly, the salt stability increases. This study shows the straightforward tuning of macromolecular core-units and related micelle properties.A microfluidic circuit on a disk platform, also known as lab-on-a-disk, is an integrated system for automated high-throughput screening for biochemical analysis. The microfluidic circuit on a disk performs biochemical analysis through sequential processes such as filtration, separation, detection, and synthesis of reagents. Sequential processes in microfluidic circuits operate through the systematically linked components, which include channels, valves, and chambers. The microchannels should have micrometer-scale for precise micro-volume liquid control in the microfluidic circuit on a disk. However, it is difficult to also consider productivity in the traditional technology. In addition, as the channel length increases, **** effort is required to construct the components of the microfluidic circuit in the limited space of the disk. 3D printing is drawing attention as a microfluidic channel fabrication technique in order to overcome the physical limitations of the traditional methods. A new concept of a 3D slope valve has been developed, which performs precise and sequential micro-volume liquid control through centrifugal and gravitational forces. Micro-volumes of liquids in a slope valve-equipped circuit are controlled over a wide range of angular velocities through the control of the valve geometry, types of liquid and volume. For sequential micro-volume of liquid control, three lines of assembled modules are connected to a microfluidic circuit. In the microfluidic circuit with slope valves, the detection of fluorescent dye tagged-VEGF is possible through sequential mixing and reaction processes. As a result, micro-volume liquid is successfully controlled with high accuracy using the 3D microfluidic circuit with a slope valve.Highly selective CO2 electroreduction to CO (∼90% faradaic efficiency) was achieved on NiCu0.25 bimetallic nanoparticle catalysts. By combining Synchrotron based X-ray absorption and in situ Raman spectroscopy studies, we found that there is a negative correlation between the Cu content in NiCux and CO selectivity due to redistribution of the 3d electrons.A copper-catalysed cascade ester amidation/radical cyclization of 2-amino-1,4-naphthoquinones with α-bromocarboxylates to afford benzo[f]indole-2,4,9(3H)-triones is described, and the reaction has a broad substrate scope and the desired products are obtained in mostly moderate to good yields. Mechanism-probing experiments indicate that the otherwise challenging radical coupling reaction of α-bromocarboxylates with 2-amino-1,4-naphthoquinones is facilitated by a 5-endo radical cyclization.Assays targeting biomarkers for the early diagnosis of disease demand a sensing platform with a high degree of specificity and sensitivity. In this work, we developed and characterized a solid-state nanopore-based sensing assay for the detection of short nucleic acid targets with readily customizable nanostructured DNA probe sets. We explored the electrical signatures of three DNA nanostructures to determine their performance as probe sets in a digital counting scheme to quantify the concentration of targets. With these probes, we demonstrate the specific, simultaneous detection of two different DNA targets in a 2-plex assay, and separately that of microRNA-155, a biomarker linked to various human cancers. In addition to specific target detection, our scheme demonstrated the ability to quantify at least six different microRNA concentrations. These results highlight the potential for solid-state nanopores as single-molecule counters for future digital diagnostic technologies.
These results indicate that the trap depth of Yb3+ becomes deeper and that of Cr3+ becomes shallower with increasing pressure. Based on the pressure-dependence of the luminescence quenching and the trap depth change estimated from the decay slopes, the relative electronic energies of the CB bottom and the Yb2+ (4f14) or Cr2+ (3d4) levels are discussed. The CB bottom energy is increased relative to the ground 1S0 state of Yb2+ with increasing pressure, which results in deepening of the electron trap depth of the Yb2+ state. The opposite tendency of the Cr3+ codoped sample was described by a decreasing tendency of the energy gap between the CB bottom and the Cr2+eg level, the relative energy level of which is increased by the increase of the crystal field with increasing pressure in the garnet host material, where the electron-trapping Cr2+ ions take the high spin state (t32ge1g) rather than the low-spin state (t42g).We developed a new class of turn-on fluorescent probes for an esterase. After the esterase-mediated hydrolysis produced carboxylate (as a fluorescence activator), the fluorescence intensity was markedly increased through the detachment of a quencher moiety from the quenched Cy5 fluorophore. Because the probes based on this new activator-induced quencher-detachment (AiQd) adopt a non-immolative linker between the cleavable site and the fluorophore, the rate of the enzymatic reaction is greatly improved, without the generation of any by-products.Correction for 'An amplification-free colorimetric test for sensitive DNA detection based on the capturing of gold nanoparticle clusters' by Giuseppina Tatulli, et al., Nanoscale, 2020, 12, 15604-15610, DOI .A nitrate-promoted Pd-catalysed mild cross-dehydrogenative C(sp2)-H bond oxidation of oximes or azobenzenes with diverse carboxylic acids has been developed. In contrast to the previous catalytic systems, this protocol features mild conditions (close to room temperature for most cases) and a broad substrate scope (up to 64 examples), thus constituting a versatile method to directly prepare diverse O-aryl esters. Moreover, the superiority of the nitrate additive in this mild transformation was further determined by experimental and computational evidence.An efficient approach to install deuterium into mono-fluorinated (hetero)arenes by a Ag2CO3/Sphos-mediated HIE protocol with D2O as the deuterium source has been disclosed. https://www.selleckchem.com/products/bi-d1870.html This method showed a specific site selectivity of deuteration at the α-position of the fluorine atom, which is complementary to the existing transition metal-catalyzed HIE process.We present a simple way to build up well-controlled coacervate-core dendrimicelles by assembly of anionic PAMAM dendrimers with a cationic-neutral diblock copolymer. Upon increasing pH, the formation of micellar structures shows constant size but the number of dendrimer molecules incorporated in one micelle decreases, following the charge stoichiometry formation rules; concomitantly, the salt stability increases. This study shows the straightforward tuning of macromolecular core-units and related micelle properties.A microfluidic circuit on a disk platform, also known as lab-on-a-disk, is an integrated system for automated high-throughput screening for biochemical analysis. The microfluidic circuit on a disk performs biochemical analysis through sequential processes such as filtration, separation, detection, and synthesis of reagents. Sequential processes in microfluidic circuits operate through the systematically linked components, which include channels, valves, and chambers. The microchannels should have micrometer-scale for precise micro-volume liquid control in the microfluidic circuit on a disk. However, it is difficult to also consider productivity in the traditional technology. In addition, as the channel length increases, much effort is required to construct the components of the microfluidic circuit in the limited space of the disk. 3D printing is drawing attention as a microfluidic channel fabrication technique in order to overcome the physical limitations of the traditional methods. A new concept of a 3D slope valve has been developed, which performs precise and sequential micro-volume liquid control through centrifugal and gravitational forces. Micro-volumes of liquids in a slope valve-equipped circuit are controlled over a wide range of angular velocities through the control of the valve geometry, types of liquid and volume. For sequential micro-volume of liquid control, three lines of assembled modules are connected to a microfluidic circuit. In the microfluidic circuit with slope valves, the detection of fluorescent dye tagged-VEGF is possible through sequential mixing and reaction processes. As a result, micro-volume liquid is successfully controlled with high accuracy using the 3D microfluidic circuit with a slope valve.Highly selective CO2 electroreduction to CO (∼90% faradaic efficiency) was achieved on NiCu0.25 bimetallic nanoparticle catalysts. By combining Synchrotron based X-ray absorption and in situ Raman spectroscopy studies, we found that there is a negative correlation between the Cu content in NiCux and CO selectivity due to redistribution of the 3d electrons.A copper-catalysed cascade ester amidation/radical cyclization of 2-amino-1,4-naphthoquinones with α-bromocarboxylates to afford benzo[f]indole-2,4,9(3H)-triones is described, and the reaction has a broad substrate scope and the desired products are obtained in mostly moderate to good yields. Mechanism-probing experiments indicate that the otherwise challenging radical coupling reaction of α-bromocarboxylates with 2-amino-1,4-naphthoquinones is facilitated by a 5-endo radical cyclization.Assays targeting biomarkers for the early diagnosis of disease demand a sensing platform with a high degree of specificity and sensitivity. In this work, we developed and characterized a solid-state nanopore-based sensing assay for the detection of short nucleic acid targets with readily customizable nanostructured DNA probe sets. We explored the electrical signatures of three DNA nanostructures to determine their performance as probe sets in a digital counting scheme to quantify the concentration of targets. With these probes, we demonstrate the specific, simultaneous detection of two different DNA targets in a 2-plex assay, and separately that of microRNA-155, a biomarker linked to various human cancers. In addition to specific target detection, our scheme demonstrated the ability to quantify at least six different microRNA concentrations. These results highlight the potential for solid-state nanopores as single-molecule counters for future digital diagnostic technologies.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينةالرجاء تسجيل الدخول , للأعجاب والمشاركة والتعليق على هذا! -
In children with postprocedural AIS, time to diagnosis was delayed. Most patients presented multiple potentially modifiable RFs as hemodynamic alterations and infections.Stem cell-based regenerative therapies may rescue the central nervous system following ischemic stroke. Mesenchymal stem cells exhibit promising regenerative capacity in in vitro studies but display little to no incorporation in host tissue after transplantation in in vivo models of stroke. Despite these limitations, clinical trials using mesenchymal stem cells have produced some functional benefits ascribed to their ability to modulate the host's inflammatory response coupled with their robust safety profile. Regeneration of ischemic brain tissue using stem cells, however, remains elusive in humans. Multilineage-differentiating stress-enduring (Muse) cells are a distinct subset of mesenchymal stem cells found sporadically in connective tissue of nearly every organ. Since their discovery in 2010, these endogenous reparative stem cells have been investigated for their therapeutic potential against a variety of diseases, including acute myocardial infarction, stroke, chronic kidney disease, and liver disease. https://www.selleckchem.com/products/i-bet151-gsk1210151a.html Preclinical studies have exemplified Muse cells' unique ability mobilize, differentiate, and engraft into damaged host tissue. Intravenously transplanted Muse cells in mouse lacunar stroke models afforded functional recovery and long-term engraftment into the host neural network. This mini-review article highlights these biological properties that make Muse cells an exceptional candidate donor source for cell therapy in ischemic stroke. Elucidating the mechanism behind the therapeutic potential of Muse cells will undoubtedly help optimize stem cell therapy for stroke and advance the field of regenerative medicine.
Early neurological deterioration (END) after stroke onset may predict severe outcomes. Estimated rates of END after intravenous thrombolysis among small patient samples have been reported up to 29.8%. We studied the incidence and factors associated with END among patients following intravenous thrombolysis.
We analyzed SITS-International Stroke Thrombolysis registry patients with known outcomes enrolled in 2010 to 2017. END was defined as an increase in National Institutes of Health Stroke Scale score ≥4 or death within 24 hours from baseline National Institutes of Health Stroke Scale. We determined the incidence of END and used logistic regression models to inspect its associated factors. We adjusted for variables found significant in univariate analyses (
<0.05). Main outcomes were incidence of END, associated predictors of END, ordinal day-90 mRS, and day-90 mortality.
We excluded 53 539 patients and included 50 726 patients. The incidence of END was 3415/50 726 (6.7% [95% CI, 6.5%-7.0%]). Factorle factors predict END and may help with understanding causal mechanisms to assist prevention of END.Biodegradation ability of a native bacterial species Pelomonas aquatica strain WS2-R2A-65, isolated from nitramine explosive-contaminated effluent, for octogen (HMX) and hexogen (RDX) under aerobic condition has been explored in this study. Scanning electron microscopy indicated that the isolate WS2-R2A-65 retained its morphology both in the presence and absence of HMX or RDX. During an incubation period of 20 days, the isolate cometabolically degraded 78 and 86% of HMX and RDX with initial concentrations 6 and 60 mg L-1, respectively. The degradation mechanism followed the first-order kinetics for both the nitramines with a 50% degradation time of 9.9 and 7.7 days for HMX and RDX, respectively. Positive electrospray ionisation mass spectroscopy indicates that biodegradation of nitamines follows multiple degradation pathways with one involving ring cleavage via single-electron transfer to nitramines leading to the elimination of single nitrite ion as evident from the formation of methylenedinitramine (MEDINA) and its methyl derivatives. The other pathways involve the reduction of both the nitramines to their nitroso, hydroxylamino and amino derivatives. These metabolites get further ring cleaved to give secondary metabolites viz. N-hydroxymethylmethylenedintramine, N-nitrosoamino and hydrazinyl derivatives leading to simpler less hazardous end products. Thus, the isolate WS2-R2A-65 proves to be an efficient microbial species for bioremediation of nitramines-contaminated effluent.The present work aimed to give an economical destiny to the produced water, a residue generated by the oil and gas industry by means of producing bioactives such as xanthan gum and ramnolipid. These compounds are often used in combination during enhanced oil recovery strategies. On the other hand, reports on co-culture of bacterial strains that are responsible for their production are rare. This research shows a factorial design method associated with surface response analysis to optimize carbon sources, sucrose and crude glycerin, and fermentation agents for culturing Xanthomonas campestris and Pseudomonas aeruginosa using the described conditions. After the critical point validation resulting in xanthan and ramnolipid production of 8.69 and 4.80 g L-1, quality tests showed an apparent viscosity of 1006 cP with an emulsifying activity abouve 50% for 94 h.A novel ternary copper(II) complexes, - [Cu(py-phen)(asn)(NO3)(H2O)] (1) and [Cu(py-phen)(trp)(H2O)]NO3 (2)- (py-phen pyrazino[2,3-f][1,10]phenanthroline, asn asparagine, trp tryptophan), have been synthesized and characterized by CHN analysis, ESI-MS, FTIR and single-crystal X-ray diffraction techniques. Interaction of the complexes 1 and 2 with CT-DNA has been investigated by absorption spectral titration, EB and Hoechst 33258 displacement assay. The interaction between the complexes 1 and 2 and BSA was investigated by electronic absorption and fluorescence spectroscopy methods. The experimental outcomes indicate that the fluorescence quenching mechanism between the complexes 1 and 2 and BSA is a static quenching process. The Stern-Volmer constants, binding constants, binding sites and the corresponding thermodynamic parameters (ΔG, ΔH, ΔS) of BSA + complex systems were determined at different temperatures. The binding distance between the complexes 1 and 2 and BSA was calculated according to FRET. The effect of the complexes 1 and 2 on the conformation of BSA was also examined using synchronous, two dimensional (2D) and three dimensional (3D) fluorescence spectroscopy.
In children with postprocedural AIS, time to diagnosis was delayed. Most patients presented multiple potentially modifiable RFs as hemodynamic alterations and infections.Stem cell-based regenerative therapies may rescue the central nervous system following ischemic stroke. Mesenchymal stem cells exhibit promising regenerative capacity in in vitro studies but display little to no incorporation in host tissue after transplantation in in vivo models of stroke. Despite these limitations, clinical trials using mesenchymal stem cells have produced some functional benefits ascribed to their ability to modulate the host's inflammatory response coupled with their robust safety profile. Regeneration of ischemic brain tissue using stem cells, however, remains elusive in humans. Multilineage-differentiating stress-enduring (Muse) cells are a distinct subset of mesenchymal stem cells found sporadically in connective tissue of nearly every organ. Since their discovery in 2010, these endogenous reparative stem cells have been investigated for their therapeutic potential against a variety of diseases, including acute myocardial infarction, stroke, chronic kidney disease, and liver disease. https://www.selleckchem.com/products/i-bet151-gsk1210151a.html Preclinical studies have exemplified Muse cells' unique ability mobilize, differentiate, and engraft into damaged host tissue. Intravenously transplanted Muse cells in mouse lacunar stroke models afforded functional recovery and long-term engraftment into the host neural network. This mini-review article highlights these biological properties that make Muse cells an exceptional candidate donor source for cell therapy in ischemic stroke. Elucidating the mechanism behind the therapeutic potential of Muse cells will undoubtedly help optimize stem cell therapy for stroke and advance the field of regenerative medicine. Early neurological deterioration (END) after stroke onset may predict severe outcomes. Estimated rates of END after intravenous thrombolysis among small patient samples have been reported up to 29.8%. We studied the incidence and factors associated with END among patients following intravenous thrombolysis. We analyzed SITS-International Stroke Thrombolysis registry patients with known outcomes enrolled in 2010 to 2017. END was defined as an increase in National Institutes of Health Stroke Scale score ≥4 or death within 24 hours from baseline National Institutes of Health Stroke Scale. We determined the incidence of END and used logistic regression models to inspect its associated factors. We adjusted for variables found significant in univariate analyses ( <0.05). Main outcomes were incidence of END, associated predictors of END, ordinal day-90 mRS, and day-90 mortality. We excluded 53 539 patients and included 50 726 patients. The incidence of END was 3415/50 726 (6.7% [95% CI, 6.5%-7.0%]). Factorle factors predict END and may help with understanding causal mechanisms to assist prevention of END.Biodegradation ability of a native bacterial species Pelomonas aquatica strain WS2-R2A-65, isolated from nitramine explosive-contaminated effluent, for octogen (HMX) and hexogen (RDX) under aerobic condition has been explored in this study. Scanning electron microscopy indicated that the isolate WS2-R2A-65 retained its morphology both in the presence and absence of HMX or RDX. During an incubation period of 20 days, the isolate cometabolically degraded 78 and 86% of HMX and RDX with initial concentrations 6 and 60 mg L-1, respectively. The degradation mechanism followed the first-order kinetics for both the nitramines with a 50% degradation time of 9.9 and 7.7 days for HMX and RDX, respectively. Positive electrospray ionisation mass spectroscopy indicates that biodegradation of nitamines follows multiple degradation pathways with one involving ring cleavage via single-electron transfer to nitramines leading to the elimination of single nitrite ion as evident from the formation of methylenedinitramine (MEDINA) and its methyl derivatives. The other pathways involve the reduction of both the nitramines to their nitroso, hydroxylamino and amino derivatives. These metabolites get further ring cleaved to give secondary metabolites viz. N-hydroxymethylmethylenedintramine, N-nitrosoamino and hydrazinyl derivatives leading to simpler less hazardous end products. Thus, the isolate WS2-R2A-65 proves to be an efficient microbial species for bioremediation of nitramines-contaminated effluent.The present work aimed to give an economical destiny to the produced water, a residue generated by the oil and gas industry by means of producing bioactives such as xanthan gum and ramnolipid. These compounds are often used in combination during enhanced oil recovery strategies. On the other hand, reports on co-culture of bacterial strains that are responsible for their production are rare. This research shows a factorial design method associated with surface response analysis to optimize carbon sources, sucrose and crude glycerin, and fermentation agents for culturing Xanthomonas campestris and Pseudomonas aeruginosa using the described conditions. After the critical point validation resulting in xanthan and ramnolipid production of 8.69 and 4.80 g L-1, quality tests showed an apparent viscosity of 1006 cP with an emulsifying activity abouve 50% for 94 h.A novel ternary copper(II) complexes, - [Cu(py-phen)(asn)(NO3)(H2O)] (1) and [Cu(py-phen)(trp)(H2O)]NO3 (2)- (py-phen pyrazino[2,3-f][1,10]phenanthroline, asn asparagine, trp tryptophan), have been synthesized and characterized by CHN analysis, ESI-MS, FTIR and single-crystal X-ray diffraction techniques. Interaction of the complexes 1 and 2 with CT-DNA has been investigated by absorption spectral titration, EB and Hoechst 33258 displacement assay. The interaction between the complexes 1 and 2 and BSA was investigated by electronic absorption and fluorescence spectroscopy methods. The experimental outcomes indicate that the fluorescence quenching mechanism between the complexes 1 and 2 and BSA is a static quenching process. The Stern-Volmer constants, binding constants, binding sites and the corresponding thermodynamic parameters (ΔG, ΔH, ΔS) of BSA + complex systems were determined at different temperatures. The binding distance between the complexes 1 and 2 and BSA was calculated according to FRET. The effect of the complexes 1 and 2 on the conformation of BSA was also examined using synchronous, two dimensional (2D) and three dimensional (3D) fluorescence spectroscopy.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينة -
Clostridium perfringens type A-induced gas gangrene is characterized by severe myonecrosis, and α-toxin has been revealed to be a major virulence factor involved in the pathogenesis. However, the detailed mechanism is unclear. Here, we show that CD31+ endothelial cell counts decrease in muscles infected with C. perfringens in an α-toxin-dependent manner. In vitro experiments revealed that α-toxin preferentially and rapidly induces the death of human umbilical vein endothelial cells (HUVECs) compared with C2C12 murine muscle cells. The toxin induces apoptosis of HUVECs by increasing ceramide. Furthermore, the specificity might be dependent on differences in the sensitivity to ceramide between these cell lines. Together, our results suggest that α-toxin-induced endothelial cell death promotes severe myonecrosis and is involved in the pathogenesis of C. https://www.selleckchem.com/products/AZD2281(Olaparib).html perfringens.The study investigated auditory temporal processing on a tens of milliseconds scale that is the interval when two consecutive stimuli are processed either together or as distinct events. Distinctiveness is defined by one's ability to make correct order judgments of the presented sounds and is measured via the spatial temporal order judgement task (TOJ). The study aimed to identify electrophysiological indices of the TOJ performance. Tone pairs were presented with inter-stimulus intervals (ISI) varying between 25 and 75 ms while EEG was recorded. A pronounced amplitude change in the P2 interval was found between the event-related potential (ERP) of tone pairs having ISI = 55 and 65 ms, but it was a characteristic only of the group having poor behavioral thresholds. With the two groups combined, the amplitude change between these ERPs in the P2 interval showed a medium-size correlation with the behavioral threshold.Lead is an environmental toxicant that has toxicity effect to the health of aquatic organisms. Gut microbiota has been reported to be closely related to human health. The aim of this study was to investigate the effects of lead exposure on the composition of gut microbiota. The composition of gut microbiota alteration was detected by 16S rRNA gene sequencing, following a 42-day exposure of lead (1 mg/L). The results showed that compared with the normal control group, the carp of lead group showed severe intestinal tissues injury and decreased Zona Occludens 1 (ZO-1) and occludin expression. The production of LPS in serum was increased by the treatment of lead exposure. Our results showed gut bacterial diversity in lead-treated common carp was lower than the control group. At the phylum level, the abundance of Bacteroidetes (LPS producing bacteria) and Fusobacteria in lead-treated carp were **** higher than the control carp. And the abundance of Actinobacteria decreased by lead exposure. At the genus level, we found the abundance of Bacteroides (LPS producing bacteria) and Plesiomonas (an important pathogenic bacteria), increased significantly by lead exposure. And the abundance of Akkermansia, a critical probiotics, was markedly inhibited by lead exposure. In conclusion, this study indicated exposure of carp to lead causes gut microbiota alterations and intestinal structural integrity destruction.
Exercise programs rely on the overload principle, yet patients with knee osteoarthritis (OA) may not adequately progress exercises due to fear of exacerbating symptoms.
To describe trajectories for perceived exertion and exercise-induced knee pain during a neuromuscular exercise program for patients with knee OA.
Participants with knee OA completed a 12-week neuromuscular exercise program consisting of weekly supervised sessions plus home exercises. During each supervised session, the Borg's rating of perceived exertion (RPE; 6=no exertion, 20=maximal exertion) and knee pain (pre, post, max) using Numeric Rating Scales (NRS; 0=no pain, 10=worst imaginable pain) were completed. Mean changes in RPE and pain from weeks 1-12 were calculated. Mixed effects regression was used to investigate trajectories over time (weeks) for RPE, and maximum pain (pre-to-max) and pain-change (pre-to-post) during exercise.
56 patients (95%) completed the program. From week 1-12, RPE increased by 2.6 (95%CI, 1.7 to 3.5), froses rather than increases in pain.Myocardial infarction (MI) is one of major causes of human death around the world. Heat shock proteins (HSPs) are a large family of conserved proteins, which can promote correct protein folding, maintain protein stability, and regulate cell metabolism, cellular homeostasis and other biological processes as molecular chaperones. Notable, HSPs are involved in MI-related pathophysiology, such as apoptosis, inflammatory response and oxidative stress. Here, we review recent studies and systematically summarize the role of HSPs in MI and myocardial ischemia/reperfusion injury (MIRI) and discuss the role of direct and indirect protein-protein interactions (PPI) of HSP complexes in the pathophysiology and therapeutic strategies of myocardial infarction. A comprehensive understanding of the cardioprotective role of PPIs of HSP complexes in myocardial infarction can provide new insights for MI or MIRI therapy.
Oxidative stress plays an important role in the occurrence of chronic diseases. Zinc supplementation is also known to be an antioxidant agent. While, there is no review on the effects of zinc supplementation on oxidative stress, this study aimed to systematically summarize randomized clinical trials (RCTs) which have evaluated the impacts of zinc supplementation on oxidative stress biomarkers.
Systematic searches were performed using the PubMed/Medline, Scopus, and Google Scholar databases, up to April 2020. All RCTs assessed the effect of oral zinc supplementation on serum malondialdehyde (MDA), total antioxidant capacity (TAC), glutathione (GSH), and nitric oxide (NO) levels, were included. For each variable, mean differences (MD) and standard deviations (SDs) were combined using the random-effects model, and the fractional polynomial model was used to implement the dose-response analysis.
Ten RCTs were included. The pooled analysis of data showed that zinc supplementation significantly reduced MDA levels (MD -0.
Clostridium perfringens type A-induced gas gangrene is characterized by severe myonecrosis, and α-toxin has been revealed to be a major virulence factor involved in the pathogenesis. However, the detailed mechanism is unclear. Here, we show that CD31+ endothelial cell counts decrease in muscles infected with C. perfringens in an α-toxin-dependent manner. In vitro experiments revealed that α-toxin preferentially and rapidly induces the death of human umbilical vein endothelial cells (HUVECs) compared with C2C12 murine muscle cells. The toxin induces apoptosis of HUVECs by increasing ceramide. Furthermore, the specificity might be dependent on differences in the sensitivity to ceramide between these cell lines. Together, our results suggest that α-toxin-induced endothelial cell death promotes severe myonecrosis and is involved in the pathogenesis of C. https://www.selleckchem.com/products/AZD2281(Olaparib).html perfringens.The study investigated auditory temporal processing on a tens of milliseconds scale that is the interval when two consecutive stimuli are processed either together or as distinct events. Distinctiveness is defined by one's ability to make correct order judgments of the presented sounds and is measured via the spatial temporal order judgement task (TOJ). The study aimed to identify electrophysiological indices of the TOJ performance. Tone pairs were presented with inter-stimulus intervals (ISI) varying between 25 and 75 ms while EEG was recorded. A pronounced amplitude change in the P2 interval was found between the event-related potential (ERP) of tone pairs having ISI = 55 and 65 ms, but it was a characteristic only of the group having poor behavioral thresholds. With the two groups combined, the amplitude change between these ERPs in the P2 interval showed a medium-size correlation with the behavioral threshold.Lead is an environmental toxicant that has toxicity effect to the health of aquatic organisms. Gut microbiota has been reported to be closely related to human health. The aim of this study was to investigate the effects of lead exposure on the composition of gut microbiota. The composition of gut microbiota alteration was detected by 16S rRNA gene sequencing, following a 42-day exposure of lead (1 mg/L). The results showed that compared with the normal control group, the carp of lead group showed severe intestinal tissues injury and decreased Zona Occludens 1 (ZO-1) and occludin expression. The production of LPS in serum was increased by the treatment of lead exposure. Our results showed gut bacterial diversity in lead-treated common carp was lower than the control group. At the phylum level, the abundance of Bacteroidetes (LPS producing bacteria) and Fusobacteria in lead-treated carp were much higher than the control carp. And the abundance of Actinobacteria decreased by lead exposure. At the genus level, we found the abundance of Bacteroides (LPS producing bacteria) and Plesiomonas (an important pathogenic bacteria), increased significantly by lead exposure. And the abundance of Akkermansia, a critical probiotics, was markedly inhibited by lead exposure. In conclusion, this study indicated exposure of carp to lead causes gut microbiota alterations and intestinal structural integrity destruction. Exercise programs rely on the overload principle, yet patients with knee osteoarthritis (OA) may not adequately progress exercises due to fear of exacerbating symptoms. To describe trajectories for perceived exertion and exercise-induced knee pain during a neuromuscular exercise program for patients with knee OA. Participants with knee OA completed a 12-week neuromuscular exercise program consisting of weekly supervised sessions plus home exercises. During each supervised session, the Borg's rating of perceived exertion (RPE; 6=no exertion, 20=maximal exertion) and knee pain (pre, post, max) using Numeric Rating Scales (NRS; 0=no pain, 10=worst imaginable pain) were completed. Mean changes in RPE and pain from weeks 1-12 were calculated. Mixed effects regression was used to investigate trajectories over time (weeks) for RPE, and maximum pain (pre-to-max) and pain-change (pre-to-post) during exercise. 56 patients (95%) completed the program. From week 1-12, RPE increased by 2.6 (95%CI, 1.7 to 3.5), froses rather than increases in pain.Myocardial infarction (MI) is one of major causes of human death around the world. Heat shock proteins (HSPs) are a large family of conserved proteins, which can promote correct protein folding, maintain protein stability, and regulate cell metabolism, cellular homeostasis and other biological processes as molecular chaperones. Notable, HSPs are involved in MI-related pathophysiology, such as apoptosis, inflammatory response and oxidative stress. Here, we review recent studies and systematically summarize the role of HSPs in MI and myocardial ischemia/reperfusion injury (MIRI) and discuss the role of direct and indirect protein-protein interactions (PPI) of HSP complexes in the pathophysiology and therapeutic strategies of myocardial infarction. A comprehensive understanding of the cardioprotective role of PPIs of HSP complexes in myocardial infarction can provide new insights for MI or MIRI therapy. Oxidative stress plays an important role in the occurrence of chronic diseases. Zinc supplementation is also known to be an antioxidant agent. While, there is no review on the effects of zinc supplementation on oxidative stress, this study aimed to systematically summarize randomized clinical trials (RCTs) which have evaluated the impacts of zinc supplementation on oxidative stress biomarkers. Systematic searches were performed using the PubMed/Medline, Scopus, and Google Scholar databases, up to April 2020. All RCTs assessed the effect of oral zinc supplementation on serum malondialdehyde (MDA), total antioxidant capacity (TAC), glutathione (GSH), and nitric oxide (NO) levels, were included. For each variable, mean differences (MD) and standard deviations (SDs) were combined using the random-effects model, and the fractional polynomial model was used to implement the dose-response analysis. Ten RCTs were included. The pooled analysis of data showed that zinc supplementation significantly reduced MDA levels (MD -0.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينة -
Lead is one of the utmost contaminated and dangerous heavy metals. This toxicant ultimately enters into the human body through the food chain and accumulated in the body because the animal/human body has not an appropriate mechanism to excrete it from the body. The main objective of the present research was to assess the toxicological effects of lead on body weights, biochemical, and hematological parameters of chickens and also to measure its bioaccumulation in the brain. Lead acetate was administrated orally at doses of 0, 71, 142, 213, and 284 mg/kg of body weight of chicken for groups A, B, C, D, and E, respectively. Along with determination of biometry of all experimental chicks, hematological [hemoglobin (Hb), packed cell volume (PCV), mean corpuscular hemoglobin concentration (MCHC), total erythrocyte count (TEC), white blood cells (WBCs), leukocyte differential count (LDC)] and biochemical [low density lipoprotein (LDL), total protein, high-density lipoprotein (HDL), and alanine aminotransferase (ALT)] parameters were measured. The present study showed that the bodyweight of chickens was not affected significantly by lead acetate exposure. The levels of MCHC, PCV, TEC, Hb, LDL, HDL, and total protein were found to be significantly decreased while WBC, LDC, and ALT profile were enhanced due to administration of lead acetate. Bioaccumulation of lead acetate was found to be higher in the brain. We conclude that the chronic administration of lead acetate affected the blood and biochemical profile of exposed chicken. These effects might be due to the accumulation of the chemical in certain vital organ(s). However, further studies in the future are suggested to refine such findings.Effluents from food, fermentation, and sugar industries contain a large quantity of glucose which has to be removed to limit the chemical oxygen demand (COD) of the water discharged. This work proposes novel thin-film nanocomposite (TFN) membranes incorporated with MgFe2O4 and ZnFe2O4 nanoparticles to address this concern. The nanoparticles synthesized by the sol-gel method was extensively characterized and then incorporated into the active polyamide layer of the thin-film composite polysulfone membranes. The change in membrane morphology, wettability, chemical structure, and mechanical strength with the incorporation of nanoparticles was studied in detail. Membranes with 0.005 wt.% MgFe2O4 nanoparticle exhibited highest glucose rejection (96.52 ± 2.35%) at 10 bar, 25 °C, and sufficiently high pure water flux (50.54 ± 1.92 L/m2h). This membrane also displayed 69.1 ± 5.12% salt rejection when challenged with 2000 ppm synthetic NaCl solution.Krossfjord-Kongsfjord system situated on the west coast of Svalbard archipelago is an ideal location to investigate the impacts of climate change on the environment. https://www.selleckchem.com/products/bip-inducer-x-bix.html As a consequence of global warming, metal concentrations in the Arctic region are increasing due to permafrost melting and changes in biological processes. Therefore, the fjord sediments were studied for identification of provenance, mobility, bioavailability, and potential toxicity of metals in the fjord environment. Finer sediments and organic matter were found to be higher away from the glacier outlets, while coarser sediments were found to be higher near the glacier head. Illite, kaolinite, and chlorite constituted the clay mineral assemblage which had slightly influenced the metal distributions. The variations in metal abundance were attributed largely to the glacial activity along with the influence of Atlantic water mass in western Spitsbergen. Fjord system received sediment from the weathering of rocks indicating an input of terrigenous material. Comparison of metals in bulk sediment with Arctic sediment quality guidelines (ASQGs) showed that Zn and Cu were enriched in the sediment. However, to avoid the overestimation of the risk associated, fractionation of the metals was carried out which revealed higher Mn and Co in labile phases that pose a considerable risk to the biota.A novel polyaniline@Almond shell (PANI@AS) biocomposite was synthesized via facile in situ chemical polymerization method. The as-synthesized adsorbent was characterized using various analytical techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), and potentiometric titration. A batch adsorption system was applied with the aim of investigating as-synthesized adsorbent ability to remove Cr(VI) ions and Orange G (OG) textile dye from aqueous solutions. Obtained results revealed that adsorption process was strongly depended upon the physicochemical parameters. The adsorption of Cr(VI) and OG dye onto PANI@AS was better described by the pseudo second-order-kinetic model and followed the Freundlich isotherm model. The maximum uptakes were 335.25 for Cr(VI) and 190.98 mg g-1 for OG dye. We further evaluated that PANI@AS biocomposite could be regenerated easily with NaOH solution and efficiently reused for Cr(VI) and OG dye removal from aqueous media. Thus, these results indicated the potential practical application of PANI@AS biocomposite for wastewater treatment.Mosquitoes are principal vector of several vector-borne diseases affecting human beings leading to thousands of deaths per year and responsible for transmitting diseases like malaria, dengue, chikungunya, yellow fever, Zika virus, Japanese encephalitis, and lymphatic filariasis. In the present study, we evaluated the different solvent extracts of mangrove Avicennia marina for their toxicity against larvae of three major mosquito vectors, as well as selected microbial pathogens. The larvicidal mortality of third instars was observed after 24 h. Highest larval mortality was found for the acetone extract of A. marina against Culex quinquefasciatus (LC50 = 0.197 mg/ml; LC90 = 1.5011 mg/ml), Anopheles stephensi (LC50 = 0.176 mg/ml; LC90 = 3.6290 mg/ml), and Aedes aegypti (LC50 = 0.164 mg/ml; LC90 = 4.3554 mg/ml). GC-MS analysis of acetone extract revealed 5 peaks, i.e., 1-hexyl-2-nitrocyclohexane (3.229%), eicosanoic acid (40.582%), cis-9-hexadecenal (70.54%), oleic acid (4.646%), and di-N-decylsulfone (5.136%). Parallel to larvicidal assay, sub-lethal dosage acetone extracts severely affected the enzyme regulations (α,β-carboxylesterase, GST and CYP450) of third instars.
Lead is one of the utmost contaminated and dangerous heavy metals. This toxicant ultimately enters into the human body through the food chain and accumulated in the body because the animal/human body has not an appropriate mechanism to excrete it from the body. The main objective of the present research was to assess the toxicological effects of lead on body weights, biochemical, and hematological parameters of chickens and also to measure its bioaccumulation in the brain. Lead acetate was administrated orally at doses of 0, 71, 142, 213, and 284 mg/kg of body weight of chicken for groups A, B, C, D, and E, respectively. Along with determination of biometry of all experimental chicks, hematological [hemoglobin (Hb), packed cell volume (PCV), mean corpuscular hemoglobin concentration (MCHC), total erythrocyte count (TEC), white blood cells (WBCs), leukocyte differential count (LDC)] and biochemical [low density lipoprotein (LDL), total protein, high-density lipoprotein (HDL), and alanine aminotransferase (ALT)] parameters were measured. The present study showed that the bodyweight of chickens was not affected significantly by lead acetate exposure. The levels of MCHC, PCV, TEC, Hb, LDL, HDL, and total protein were found to be significantly decreased while WBC, LDC, and ALT profile were enhanced due to administration of lead acetate. Bioaccumulation of lead acetate was found to be higher in the brain. We conclude that the chronic administration of lead acetate affected the blood and biochemical profile of exposed chicken. These effects might be due to the accumulation of the chemical in certain vital organ(s). However, further studies in the future are suggested to refine such findings.Effluents from food, fermentation, and sugar industries contain a large quantity of glucose which has to be removed to limit the chemical oxygen demand (COD) of the water discharged. This work proposes novel thin-film nanocomposite (TFN) membranes incorporated with MgFe2O4 and ZnFe2O4 nanoparticles to address this concern. The nanoparticles synthesized by the sol-gel method was extensively characterized and then incorporated into the active polyamide layer of the thin-film composite polysulfone membranes. The change in membrane morphology, wettability, chemical structure, and mechanical strength with the incorporation of nanoparticles was studied in detail. Membranes with 0.005 wt.% MgFe2O4 nanoparticle exhibited highest glucose rejection (96.52 ± 2.35%) at 10 bar, 25 °C, and sufficiently high pure water flux (50.54 ± 1.92 L/m2h). This membrane also displayed 69.1 ± 5.12% salt rejection when challenged with 2000 ppm synthetic NaCl solution.Krossfjord-Kongsfjord system situated on the west coast of Svalbard archipelago is an ideal location to investigate the impacts of climate change on the environment. https://www.selleckchem.com/products/bip-inducer-x-bix.html As a consequence of global warming, metal concentrations in the Arctic region are increasing due to permafrost melting and changes in biological processes. Therefore, the fjord sediments were studied for identification of provenance, mobility, bioavailability, and potential toxicity of metals in the fjord environment. Finer sediments and organic matter were found to be higher away from the glacier outlets, while coarser sediments were found to be higher near the glacier head. Illite, kaolinite, and chlorite constituted the clay mineral assemblage which had slightly influenced the metal distributions. The variations in metal abundance were attributed largely to the glacial activity along with the influence of Atlantic water mass in western Spitsbergen. Fjord system received sediment from the weathering of rocks indicating an input of terrigenous material. Comparison of metals in bulk sediment with Arctic sediment quality guidelines (ASQGs) showed that Zn and Cu were enriched in the sediment. However, to avoid the overestimation of the risk associated, fractionation of the metals was carried out which revealed higher Mn and Co in labile phases that pose a considerable risk to the biota.A novel polyaniline@Almond shell (PANI@AS) biocomposite was synthesized via facile in situ chemical polymerization method. The as-synthesized adsorbent was characterized using various analytical techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), and potentiometric titration. A batch adsorption system was applied with the aim of investigating as-synthesized adsorbent ability to remove Cr(VI) ions and Orange G (OG) textile dye from aqueous solutions. Obtained results revealed that adsorption process was strongly depended upon the physicochemical parameters. The adsorption of Cr(VI) and OG dye onto PANI@AS was better described by the pseudo second-order-kinetic model and followed the Freundlich isotherm model. The maximum uptakes were 335.25 for Cr(VI) and 190.98 mg g-1 for OG dye. We further evaluated that PANI@AS biocomposite could be regenerated easily with NaOH solution and efficiently reused for Cr(VI) and OG dye removal from aqueous media. Thus, these results indicated the potential practical application of PANI@AS biocomposite for wastewater treatment.Mosquitoes are principal vector of several vector-borne diseases affecting human beings leading to thousands of deaths per year and responsible for transmitting diseases like malaria, dengue, chikungunya, yellow fever, Zika virus, Japanese encephalitis, and lymphatic filariasis. In the present study, we evaluated the different solvent extracts of mangrove Avicennia marina for their toxicity against larvae of three major mosquito vectors, as well as selected microbial pathogens. The larvicidal mortality of third instars was observed after 24 h. Highest larval mortality was found for the acetone extract of A. marina against Culex quinquefasciatus (LC50 = 0.197 mg/ml; LC90 = 1.5011 mg/ml), Anopheles stephensi (LC50 = 0.176 mg/ml; LC90 = 3.6290 mg/ml), and Aedes aegypti (LC50 = 0.164 mg/ml; LC90 = 4.3554 mg/ml). GC-MS analysis of acetone extract revealed 5 peaks, i.e., 1-hexyl-2-nitrocyclohexane (3.229%), eicosanoic acid (40.582%), cis-9-hexadecenal (70.54%), oleic acid (4.646%), and di-N-decylsulfone (5.136%). Parallel to larvicidal assay, sub-lethal dosage acetone extracts severely affected the enzyme regulations (α,β-carboxylesterase, GST and CYP450) of third instars.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينة -
The current paradigm for treating toddler's diarrhea comprises dietary modification and fluid restriction. Previous studies show that probiotics and proton-pump inhibitors (PPIs) or H
blockers could control diarrhea associated with functional gastrointestinal disorders (FGIDs). This study aims to determine and compare the efficacy of a short course of oral ranitidine and a probiotic in the treatment of toddler's diarrhea.
This study was a parallel-group randomized controlled trial (RCT). We sequentially enrolled 40 patients who met the eligibility criteria. We randomly assigned 20 patients to the oral ranitidine group, ten patients to the probiotic group, and ten patients to the placebo group. In the oral ranitidine group, patients received oral ranitidine (3 mg/kg/day) once daily for 10 days; in the probiotic and placebo groups, they were administered 5 to 10 billion colony-forming units (CFUs) per day of lyophilized Lactobacillus rhamnosus and 50 mg of once-daily oral vitamin C tablet respectively forbiotics in reducing stool frequency and normalizing stool consistency in toddler's diarrhea. We recommend multi-center trials with appropriate study designs to confirm and validate this finding.
ISRCTN, ISRCTN10783996 . Registered 8 April 2016-Registered retrospectively.
ISRCTN, ISRCTN10783996 . Registered 8 April 2016-Registered retrospectively.An amendment to this paper has been published and can be accessed via the original article.
Headache is a common and costly health problem. Although the pathogenesis of headache is heterogeneous, reported contributing factors are dysfunctions of the upper cervical spine. The flexion rotation test (FRT) is a commonly used diagnostic test to detect upper cervical movement impairment. A digital goniometer may support precise measurement of movement impairment in the upper cervical spine. However, its reliability and validity is not assessed, yet. The aim of this study was to investigate the reliability and validity of the digital goniometer compared to an ultrasound-based movement analysis system.
Two separate cross-sectional studies were conducted using the digital goniometer EasyAngle (Meloq AB, Stockholm, Sweden) for a) investigating the concurrent validity of upper cervical range of motion (ROM) during the FRT and b) determining the inter- and intra-rater reliability in the target population of patients with head and neck pain. Sixty-two participants, 39 with and 23 without head and neck pain, and can be used in clinical practice to accurately determine movement impairment in the upper cervical spine.
German Registry of Clinical Trials DRKS00013051 .
German Registry of Clinical Trials DRKS00013051 .
Sudden unexpected infant death (SUID) - including sudden infant death syndrome (SIDS) - continues to be a major contributor to infant mortality worldwide. Our objective was to analyse time trends and to identify country-clusters.
The National Statistical Offices of 52 countries provided the number of deaths and live births (1969-2012). We calculated infant mortality rates per 1000 live births for SUID, SIDS, and all-cause mortality. Overall, 29 countries provided sufficient data for time course analyses of SUID. To sensitively model change over time, we smoothed the curves of mortality rates (1980-2010). We performed a hierarchical cluster analysis to identify clusters of time trends for SUID and SIDS, including all-cause infant mortality.
All-cause infant mortality declined from 28.5 to 4.8 per 1000 live births (mean 12.4; 95% confidence interval 12.0-12.9) between 1969 and 2012. The cluster analysis revealed four country-clusters. Clusters 1 and 2 mostly contained countries showing the typical peak of SUID mortality during the 1980s. Cluster 1 had higher SUID mortality compared to cluster 2. All-cause infant mortality was low in both clusters but higher in cluster 1 compared to cluster 2. Clusters 3 and 4 had low rates of SUID without a peak during the 1980s. Cluster 3 had the highest all-cause infant mortality of all clusters. Cluster 4 had an intermediate all-cause infant mortality. The time trends of SUID and SIDS mortality were similar.
The country-specific time trends in SUID varied considerably. The identification of country-clusters may promote research into how changes in sleep position, smoking, immunisation, or other factors are related to our findings.
The country-specific time trends in SUID varied considerably. The identification of country-clusters may promote research into how changes in sleep position, smoking, immunisation, or other factors are related to our findings.
Multiple definitions are used to investigate injuries in musicians, resulting in a wide range of prevalence rates. The aim of this study is to establish the impact of different injury definitions on the prevalence of injuries and disability in classical music students. Moreover, the practical implications of using different injury definitions are considered.
A prospective cohort study among first-year classical music students was performed using bi-monthly questionnaires focusing on injuries. Three injury definitions were used 1) all MSK complaints injury (any MSK complaint resulting in a VAS pain score > 0 in the past eight weeks), 2) medical attention injury (any MSK complaint that resulted in a student consulting a health provider in the past eight weeks), 3) time-loss injury (any MSK complaint that resulted in partly/completely missing music classes or activities in the past eight weeks). For all injury definitions prevalences were calculated and compared. https://www.selleckchem.com/products/ctpi-2.html Furthermore, the Disabilities of the Arm, r affecting the outcome of music injury surveillance studies. To reach a consensus, it is therefore important to consider the different injury definitions depending on the goal of the injury surveillance and the practical implications.
PDSAFE is an individually-tailored, physiotherapist-delivered, balance, strength and strategy training programme aimed at preventing falls among people with Parkinson's. We evaluated the cost-effectiveness of PDSAFE compared with usual care for people with Parkinson's at higher risk of falling, from a UK National Health Service and Personal Social Service perspective.
Resource use and quality of life data (EQ-5D-3L) were collected from 238 participants randomised to the PDSAFE intervention and 236 participants randomised to control, at baseline, 3 months, 6 months (primary outcome), and 12 months. Adjusted cost and quality-adjusted life-years (QALYs) were estimated using generalised linear models and uncertainty estimated using a non-parametric bootstrap.
Over 6 months, the PDSAFE intervention was associated with an incremental cost of £925 (95%CI £428 to £1422) and a very small and statistically insignificant QALY gain of 0.008 (95%CI - 0.006 to 0.021). The resulting incremental cost-effectiveness ratio (ICER) was £120,659 per QALY and the probability of the intervention being cost-effective at aUK threshold of £30,000/QALY was less than 1%.
The current paradigm for treating toddler's diarrhea comprises dietary modification and fluid restriction. Previous studies show that probiotics and proton-pump inhibitors (PPIs) or H blockers could control diarrhea associated with functional gastrointestinal disorders (FGIDs). This study aims to determine and compare the efficacy of a short course of oral ranitidine and a probiotic in the treatment of toddler's diarrhea. This study was a parallel-group randomized controlled trial (RCT). We sequentially enrolled 40 patients who met the eligibility criteria. We randomly assigned 20 patients to the oral ranitidine group, ten patients to the probiotic group, and ten patients to the placebo group. In the oral ranitidine group, patients received oral ranitidine (3 mg/kg/day) once daily for 10 days; in the probiotic and placebo groups, they were administered 5 to 10 billion colony-forming units (CFUs) per day of lyophilized Lactobacillus rhamnosus and 50 mg of once-daily oral vitamin C tablet respectively forbiotics in reducing stool frequency and normalizing stool consistency in toddler's diarrhea. We recommend multi-center trials with appropriate study designs to confirm and validate this finding. ISRCTN, ISRCTN10783996 . Registered 8 April 2016-Registered retrospectively. ISRCTN, ISRCTN10783996 . Registered 8 April 2016-Registered retrospectively.An amendment to this paper has been published and can be accessed via the original article. Headache is a common and costly health problem. Although the pathogenesis of headache is heterogeneous, reported contributing factors are dysfunctions of the upper cervical spine. The flexion rotation test (FRT) is a commonly used diagnostic test to detect upper cervical movement impairment. A digital goniometer may support precise measurement of movement impairment in the upper cervical spine. However, its reliability and validity is not assessed, yet. The aim of this study was to investigate the reliability and validity of the digital goniometer compared to an ultrasound-based movement analysis system. Two separate cross-sectional studies were conducted using the digital goniometer EasyAngle (Meloq AB, Stockholm, Sweden) for a) investigating the concurrent validity of upper cervical range of motion (ROM) during the FRT and b) determining the inter- and intra-rater reliability in the target population of patients with head and neck pain. Sixty-two participants, 39 with and 23 without head and neck pain, and can be used in clinical practice to accurately determine movement impairment in the upper cervical spine. German Registry of Clinical Trials DRKS00013051 . German Registry of Clinical Trials DRKS00013051 . Sudden unexpected infant death (SUID) - including sudden infant death syndrome (SIDS) - continues to be a major contributor to infant mortality worldwide. Our objective was to analyse time trends and to identify country-clusters. The National Statistical Offices of 52 countries provided the number of deaths and live births (1969-2012). We calculated infant mortality rates per 1000 live births for SUID, SIDS, and all-cause mortality. Overall, 29 countries provided sufficient data for time course analyses of SUID. To sensitively model change over time, we smoothed the curves of mortality rates (1980-2010). We performed a hierarchical cluster analysis to identify clusters of time trends for SUID and SIDS, including all-cause infant mortality. All-cause infant mortality declined from 28.5 to 4.8 per 1000 live births (mean 12.4; 95% confidence interval 12.0-12.9) between 1969 and 2012. The cluster analysis revealed four country-clusters. Clusters 1 and 2 mostly contained countries showing the typical peak of SUID mortality during the 1980s. Cluster 1 had higher SUID mortality compared to cluster 2. All-cause infant mortality was low in both clusters but higher in cluster 1 compared to cluster 2. Clusters 3 and 4 had low rates of SUID without a peak during the 1980s. Cluster 3 had the highest all-cause infant mortality of all clusters. Cluster 4 had an intermediate all-cause infant mortality. The time trends of SUID and SIDS mortality were similar. The country-specific time trends in SUID varied considerably. The identification of country-clusters may promote research into how changes in sleep position, smoking, immunisation, or other factors are related to our findings. The country-specific time trends in SUID varied considerably. The identification of country-clusters may promote research into how changes in sleep position, smoking, immunisation, or other factors are related to our findings. Multiple definitions are used to investigate injuries in musicians, resulting in a wide range of prevalence rates. The aim of this study is to establish the impact of different injury definitions on the prevalence of injuries and disability in classical music students. Moreover, the practical implications of using different injury definitions are considered. A prospective cohort study among first-year classical music students was performed using bi-monthly questionnaires focusing on injuries. Three injury definitions were used 1) all MSK complaints injury (any MSK complaint resulting in a VAS pain score > 0 in the past eight weeks), 2) medical attention injury (any MSK complaint that resulted in a student consulting a health provider in the past eight weeks), 3) time-loss injury (any MSK complaint that resulted in partly/completely missing music classes or activities in the past eight weeks). For all injury definitions prevalences were calculated and compared. https://www.selleckchem.com/products/ctpi-2.html Furthermore, the Disabilities of the Arm, r affecting the outcome of music injury surveillance studies. To reach a consensus, it is therefore important to consider the different injury definitions depending on the goal of the injury surveillance and the practical implications. PDSAFE is an individually-tailored, physiotherapist-delivered, balance, strength and strategy training programme aimed at preventing falls among people with Parkinson's. We evaluated the cost-effectiveness of PDSAFE compared with usual care for people with Parkinson's at higher risk of falling, from a UK National Health Service and Personal Social Service perspective. Resource use and quality of life data (EQ-5D-3L) were collected from 238 participants randomised to the PDSAFE intervention and 236 participants randomised to control, at baseline, 3 months, 6 months (primary outcome), and 12 months. Adjusted cost and quality-adjusted life-years (QALYs) were estimated using generalised linear models and uncertainty estimated using a non-parametric bootstrap. Over 6 months, the PDSAFE intervention was associated with an incremental cost of £925 (95%CI £428 to £1422) and a very small and statistically insignificant QALY gain of 0.008 (95%CI - 0.006 to 0.021). The resulting incremental cost-effectiveness ratio (ICER) was £120,659 per QALY and the probability of the intervention being cost-effective at aUK threshold of £30,000/QALY was less than 1%.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينة -
Moreover, periods with strong explanatory power had stronger synchronising effect on juvenile body mass in both species. However, weather variables with large variation in the effects on body mass among populations had weak synchronising effect. 5. The results confirm that weather has a large impact on the spatial structure of population properties, but also that spatial heterogeneity for instance in environmental change or population density may affect how and to what extent populations are synchronised. This article is protected by copyright. All rights reserved.BACKGROUND Oral lichen planus (OLP) is a relatively common chronic T cell-mediated disease, which can cause significant pain, particularly in its erosive or ulcerative forms. As pain is the indication for treatment of OLP, pain resolution is the primary outcome for this review. This review is an update of a version last published in 2011, but focuses on the evidence for corticosteroid treatment only. A second review considering non-corticosteroid treatments is in progress. OBJECTIVES To assess the effects and safety of corticosteroids, in any formulation, for treating people with symptoms of oral lichen planus. SEARCH METHODS Cochrane Oral Health's Information Specialist searched the following databases to 25 February 2019 Cochrane Oral Health's Trials Register, CENTRAL (2019, Issue 1), MEDLINE Ovid, and Embase Ovid. ClinicalTrials.gov and the World Health Organization International Clinical Trials Registry Platform were searched for ongoing trials. There were no restrictions on language or date of publicatiog pain than corticosteroids, although there is some uncertainty about adverse effects and clinical response to tacrolimus showed conflicting results. Copyright © 2020 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.in English, Spanish ANTECEDENTES El impacto del número de metástasis ganglionares versus la relación de ganglios linfáticos metastásicos (metastatic lymph node ratio, MLNR) versus el estadio ganglionar según el American Joint Committee on Cancer (AJCC) sobre la curación bioquí**** en el cáncer medular de tiroides (medullary thyroid cancer, MTC) no está bien definido. MÉTODOS Se utilizaron análisis de regresión logística multivariable y análisis estratificados de Kaplan-Meier para determinar las variables clínicas e histopatológicas que contribuyen a la curación bioquí**** en el ****con ganglios positivos. RESULTADOS En total, 584 de 1.026 pacientes con ****se sometieron a disecciones sistemáticas de los ganglios linfáticos en caso de enfermedad con ganglios positivos, el 27,4% (54 de 197 pacientes) de los cuales se curaron bioquímicamente después de la cirugía inicial y el 13,5% (42 de 310 pacientes) después de la reintervención quirúrgica. Los pacientes curados tuvieron una extensión extratiroidea significaticos, a diferencia de la MLNR y del estadio ganglionar AJCC, determina la probabilidad de curación bioquí**** después de la cirugía inicial y la reintervención para el ****con ganglios positivos.In his letter Professor Steinert argues that psychiatry "would do well with a new paradigm", implying the need for a single over-arching one (2). In response, I argue that, while psychiatry is in part a science (embracing biological, social, psychological and cultural factors), its practice is also an art. As such, it requires multiple niched paradigms as against any and all-explanatory paradigm for modelling causes and determining treatment modalities. This article is protected by copyright. https://www.selleckchem.com/products/prt062607-p505-15-hcl.html All rights reserved.Characterisation and prognostic impact of immunoparesis in relapsed multiple myeloma (MM) is lacking in the current literature. We evaluated 258 patients with relapsed MM, diagnosed from 2008 to 2015, to investigate the prognostic impact of deep immunoparesis on post-relapse survival. On qualitative immunoparesis assessment, no, partial and full immunoparesis was present in 9%, 30% and 61% of patients, respectively. Quantitative immunoparesis was assessed by computing the average relative difference (ARD) between polyclonal immunoglobulin(s) and corresponding lower normal limit(s), with greater negative values indicating deeper immunoparesis. The median ARD was -39%, with an optimal cut-off of -50% for overall survival (OS) by recursive partitioning analysis. Deep immunoparesis (ARD ≤-50%) was associated with a higher tumour burden at first relapse compared to none/shallow [ARD >-50%] immunoparesis. The OS (P = 0·007) and progression-free survival (PFS; P less then 0·001) differed significantly between the deep and none/shallow immunoparesis groups. Kaplan-Meier estimates for 3-year OS were 36% and 46%, and for 2-year PFS were 17% and 27%, respectively. On multivariable analysis (MVA) for PFS, both qualitative and quantitative immunoparesis retained negative prognostic impact independently. However, only quantitative immunoparesis was independently prognostic for OS on MVA. Depth of immunoparesis in relapsed MM is an important prognostic factor for post-relapse survival in the era of novel agents and continuous therapy. © 2020 The Authors. British Journal of Haematology published by British Society for Haematology and John Wiley & Sons Ltd.Myeloproliferative Neoplasm (MPN), unclassifiable (MPN-U) is a heterogeneous disease with regards to both clinical phenotype and disease course. Patients may initially be asymptomatic or present with leucocytosis or thrombocytosis, anaemia, progressive splenomegaly, constitutional symptom, thromboses or accelerated/blastic phase disease. Treatment strategies are variable and there are no widely accepted consensus management guidelines for MNU-U. Allogeneic Haematopoietic Cell Transplantation (allo-HCT) remains the only curative strategy yet outcomes, to date, are not well defined. We hereby report on the largest retrospective study of patients with MPN-U undergoing allo-HCT, highlighting the potentially curative role and providing clinicians with robust engraftment, GvHD and outcome data to facilitate patient discussion. © 2020 British Society for Haematology and John Wiley & Sons Ltd.
Moreover, periods with strong explanatory power had stronger synchronising effect on juvenile body mass in both species. However, weather variables with large variation in the effects on body mass among populations had weak synchronising effect. 5. The results confirm that weather has a large impact on the spatial structure of population properties, but also that spatial heterogeneity for instance in environmental change or population density may affect how and to what extent populations are synchronised. This article is protected by copyright. All rights reserved.BACKGROUND Oral lichen planus (OLP) is a relatively common chronic T cell-mediated disease, which can cause significant pain, particularly in its erosive or ulcerative forms. As pain is the indication for treatment of OLP, pain resolution is the primary outcome for this review. This review is an update of a version last published in 2011, but focuses on the evidence for corticosteroid treatment only. A second review considering non-corticosteroid treatments is in progress. OBJECTIVES To assess the effects and safety of corticosteroids, in any formulation, for treating people with symptoms of oral lichen planus. SEARCH METHODS Cochrane Oral Health's Information Specialist searched the following databases to 25 February 2019 Cochrane Oral Health's Trials Register, CENTRAL (2019, Issue 1), MEDLINE Ovid, and Embase Ovid. ClinicalTrials.gov and the World Health Organization International Clinical Trials Registry Platform were searched for ongoing trials. There were no restrictions on language or date of publicatiog pain than corticosteroids, although there is some uncertainty about adverse effects and clinical response to tacrolimus showed conflicting results. Copyright © 2020 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.in English, Spanish ANTECEDENTES El impacto del número de metástasis ganglionares versus la relación de ganglios linfáticos metastásicos (metastatic lymph node ratio, MLNR) versus el estadio ganglionar según el American Joint Committee on Cancer (AJCC) sobre la curación bioquímica en el cáncer medular de tiroides (medullary thyroid cancer, MTC) no está bien definido. MÉTODOS Se utilizaron análisis de regresión logística multivariable y análisis estratificados de Kaplan-Meier para determinar las variables clínicas e histopatológicas que contribuyen a la curación bioquímica en el MTC con ganglios positivos. RESULTADOS En total, 584 de 1.026 pacientes con MTC se sometieron a disecciones sistemáticas de los ganglios linfáticos en caso de enfermedad con ganglios positivos, el 27,4% (54 de 197 pacientes) de los cuales se curaron bioquímicamente después de la cirugía inicial y el 13,5% (42 de 310 pacientes) después de la reintervención quirúrgica. Los pacientes curados tuvieron una extensión extratiroidea significaticos, a diferencia de la MLNR y del estadio ganglionar AJCC, determina la probabilidad de curación bioquímica después de la cirugía inicial y la reintervención para el MTC con ganglios positivos.In his letter Professor Steinert argues that psychiatry "would do well with a new paradigm", implying the need for a single over-arching one (2). In response, I argue that, while psychiatry is in part a science (embracing biological, social, psychological and cultural factors), its practice is also an art. As such, it requires multiple niched paradigms as against any and all-explanatory paradigm for modelling causes and determining treatment modalities. This article is protected by copyright. https://www.selleckchem.com/products/prt062607-p505-15-hcl.html All rights reserved.Characterisation and prognostic impact of immunoparesis in relapsed multiple myeloma (MM) is lacking in the current literature. We evaluated 258 patients with relapsed MM, diagnosed from 2008 to 2015, to investigate the prognostic impact of deep immunoparesis on post-relapse survival. On qualitative immunoparesis assessment, no, partial and full immunoparesis was present in 9%, 30% and 61% of patients, respectively. Quantitative immunoparesis was assessed by computing the average relative difference (ARD) between polyclonal immunoglobulin(s) and corresponding lower normal limit(s), with greater negative values indicating deeper immunoparesis. The median ARD was -39%, with an optimal cut-off of -50% for overall survival (OS) by recursive partitioning analysis. Deep immunoparesis (ARD ≤-50%) was associated with a higher tumour burden at first relapse compared to none/shallow [ARD >-50%] immunoparesis. The OS (P = 0·007) and progression-free survival (PFS; P less then 0·001) differed significantly between the deep and none/shallow immunoparesis groups. Kaplan-Meier estimates for 3-year OS were 36% and 46%, and for 2-year PFS were 17% and 27%, respectively. On multivariable analysis (MVA) for PFS, both qualitative and quantitative immunoparesis retained negative prognostic impact independently. However, only quantitative immunoparesis was independently prognostic for OS on MVA. Depth of immunoparesis in relapsed MM is an important prognostic factor for post-relapse survival in the era of novel agents and continuous therapy. © 2020 The Authors. British Journal of Haematology published by British Society for Haematology and John Wiley & Sons Ltd.Myeloproliferative Neoplasm (MPN), unclassifiable (MPN-U) is a heterogeneous disease with regards to both clinical phenotype and disease course. Patients may initially be asymptomatic or present with leucocytosis or thrombocytosis, anaemia, progressive splenomegaly, constitutional symptom, thromboses or accelerated/blastic phase disease. Treatment strategies are variable and there are no widely accepted consensus management guidelines for MNU-U. Allogeneic Haematopoietic Cell Transplantation (allo-HCT) remains the only curative strategy yet outcomes, to date, are not well defined. We hereby report on the largest retrospective study of patients with MPN-U undergoing allo-HCT, highlighting the potentially curative role and providing clinicians with robust engraftment, GvHD and outcome data to facilitate patient discussion. © 2020 British Society for Haematology and John Wiley & Sons Ltd.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينة -
C setting. Further opportunities exist, if constraints allow, for the pharmacist to contribute to better patient-centred care.
Eclampsia remains a major cause of maternal mortality, particularly in teenage pregnancies. Healthcare professionals providing antenatal must regard teenagers as a high risk group for the pre-eclampsia-eclampsia syndrome.
Data extracted from the South African Saving Mothers Report 2014-2016.
To establish the clinical details in teenage maternal deaths owing to eclampsia.
Retrospective review of the case records and maternal death assessment forms of teenagers that died due to eclampsia during 2014-2016.
There were 47 teenagers (aged 14 to 19 years) who died from eclampsia. Of these 18 out of 47 (38%) deaths occurred in the post-partum period. Forty (85.1%) of the patients had antenatal care. Three (6.4%) had post-partum eclampsia, and of the remaining 44 of the 47 (93.6%), the gestational age at first occurrence of a seizure ranged from 25 to 39 weeks. The blood pressures at the time of seizure ranged from systolic of 131 to 210 mmHg and diastolic of 89 to 130 mmHg. The commonest final causes of death were intracerebral haemorrhage associated with severe hypertension and multi-organ failure. Avoidable factors included transport delays, referral to the wrong levels of health care and poor care by health professionals.
Teenage pregnancy is a risk factor for eclampsia-related death; awareness of borderline elevations of blood pressure levels from baseline values (prehypertension levels) and taking following national guidelines on the management of hypertensive disorders of pregnancy will decrease deaths from eclampsia.
Teenage pregnancy is a risk factor for eclampsia-related death; awareness of borderline elevations of blood pressure levels from baseline values (prehypertension levels) and taking following national guidelines on the management of hypertensive disorders of pregnancy will decrease deaths from eclampsia.
There is a dearth of qualitative studies exploring in-depth barriers that adolescents face in accessing and utilising reproductive health services (RHS) in Nigerian primary healthcare centres.
This study explored the barriers hindering adolescents' access to and utilisation of RHS in primary healthcare centres.
This study was conducted in three primary healthcare centres in Kaduna North Local government area, Nigeria.
This study used an exploratory descriptive qualitative design. Fourteen adolescents and three RHS providers were selected and interviewed. The data collection methods included individual in-depth interviews with adolescents and key informant interviews with service providers. Interviews were conducted between January 2017 and April 2017. Thematic content analysis was used to analyse the data.
This study identified three thematic barriers to adolescent's utilisation of RHS. These included individual, social and health system barriers. Individual factors included the following inadequate knowledge about RHS and poor attitudes of adolescents towards RHS; social factors such as parental influence, community and religious norms, financial constraints and stigma; and health system factors such as poor attitudes of service providers and inconvenient health facility opening hours hindered adolescents from utilising RHS. Most prominent was the strong influence of the social factors that affected adolescents to the extent that they felt constrained to freely utilise RHS out of a sense of commitment to religious values.
The findings highlight the need for the development of programmes that would foster collective responsibility for supportive environments within communities and health facilities for positive adolescent RHS experiences.
The findings highlight the need for the development of programmes that would foster collective responsibility for supportive environments within communities and health facilities for positive adolescent RHS experiences.
Health promotion is an effective tool for public health. It goes beyond preventing the spread of diseases and reducing the disease burden. It includes interventions encompassing the creation of supportive environments, building public health policy, developing personal skills, reorienting health services and strengthening multisectoral community actions.
The aim of the review was conduct an analysis on the opportunities and challenges of the use of social media for health promotion in South Africa.
A search of review articles on health promotion using social media conducted using Medline and Google Scholar. Secondary searches were conducted using references and citations from selected articles.
Social media has potential of being an effective health promotion tool in South Africa. It presents an opportunity for scaling health promotion programs because of its low cost, its ability to have virtual communities and the ease of access eliminating geographical barriers. It also allows real-time communicatipromotion information.The older persons in our society are a special group of people in need of additional measures of care and protection. They have medical, financial, emotional and social needs. The novel Coronavirus disease 2019 (COVID-19) only exacerbates those needs. COVID-19 is a new disease, and there is limited information regarding the disease. Based on currently available information, older persons and people of any age who have serious underlying medical conditions may be at higher risk of severe illness from COVID-19. Family physicians provide care for individuals across their lifespan. Because geriatricians are internists or family physicians with post-residency training in geriatric medicine, they are major stakeholders in geriatric care. The authors are concerned about the absence of a COVID-19 response guideline/special advisory targeting the vulnerable population of older adults. https://www.selleckchem.com/products/bip-inducer-x-bix.html The management and response to COVID-19 will be implemented in part based on the local context of available resources. Nigeria has been described as a resource-constrained nation. Infection prevention in older persons in Nigeria will far outweigh the possibilities of treatment given limited resources. The aim was to recommend actionable strategies to prevent COVID-19-related morbidity or mortality among older persons in Nigeria and to promote their overall well-being during and after the pandemic. These recommendations cut across the geriatric medicine domains of physical health, mental health, functioning ability and socio-environmental situation.
C setting. Further opportunities exist, if constraints allow, for the pharmacist to contribute to better patient-centred care. Eclampsia remains a major cause of maternal mortality, particularly in teenage pregnancies. Healthcare professionals providing antenatal must regard teenagers as a high risk group for the pre-eclampsia-eclampsia syndrome. Data extracted from the South African Saving Mothers Report 2014-2016. To establish the clinical details in teenage maternal deaths owing to eclampsia. Retrospective review of the case records and maternal death assessment forms of teenagers that died due to eclampsia during 2014-2016. There were 47 teenagers (aged 14 to 19 years) who died from eclampsia. Of these 18 out of 47 (38%) deaths occurred in the post-partum period. Forty (85.1%) of the patients had antenatal care. Three (6.4%) had post-partum eclampsia, and of the remaining 44 of the 47 (93.6%), the gestational age at first occurrence of a seizure ranged from 25 to 39 weeks. The blood pressures at the time of seizure ranged from systolic of 131 to 210 mmHg and diastolic of 89 to 130 mmHg. The commonest final causes of death were intracerebral haemorrhage associated with severe hypertension and multi-organ failure. Avoidable factors included transport delays, referral to the wrong levels of health care and poor care by health professionals. Teenage pregnancy is a risk factor for eclampsia-related death; awareness of borderline elevations of blood pressure levels from baseline values (prehypertension levels) and taking following national guidelines on the management of hypertensive disorders of pregnancy will decrease deaths from eclampsia. Teenage pregnancy is a risk factor for eclampsia-related death; awareness of borderline elevations of blood pressure levels from baseline values (prehypertension levels) and taking following national guidelines on the management of hypertensive disorders of pregnancy will decrease deaths from eclampsia. There is a dearth of qualitative studies exploring in-depth barriers that adolescents face in accessing and utilising reproductive health services (RHS) in Nigerian primary healthcare centres. This study explored the barriers hindering adolescents' access to and utilisation of RHS in primary healthcare centres. This study was conducted in three primary healthcare centres in Kaduna North Local government area, Nigeria. This study used an exploratory descriptive qualitative design. Fourteen adolescents and three RHS providers were selected and interviewed. The data collection methods included individual in-depth interviews with adolescents and key informant interviews with service providers. Interviews were conducted between January 2017 and April 2017. Thematic content analysis was used to analyse the data. This study identified three thematic barriers to adolescent's utilisation of RHS. These included individual, social and health system barriers. Individual factors included the following inadequate knowledge about RHS and poor attitudes of adolescents towards RHS; social factors such as parental influence, community and religious norms, financial constraints and stigma; and health system factors such as poor attitudes of service providers and inconvenient health facility opening hours hindered adolescents from utilising RHS. Most prominent was the strong influence of the social factors that affected adolescents to the extent that they felt constrained to freely utilise RHS out of a sense of commitment to religious values. The findings highlight the need for the development of programmes that would foster collective responsibility for supportive environments within communities and health facilities for positive adolescent RHS experiences. The findings highlight the need for the development of programmes that would foster collective responsibility for supportive environments within communities and health facilities for positive adolescent RHS experiences. Health promotion is an effective tool for public health. It goes beyond preventing the spread of diseases and reducing the disease burden. It includes interventions encompassing the creation of supportive environments, building public health policy, developing personal skills, reorienting health services and strengthening multisectoral community actions. The aim of the review was conduct an analysis on the opportunities and challenges of the use of social media for health promotion in South Africa. A search of review articles on health promotion using social media conducted using Medline and Google Scholar. Secondary searches were conducted using references and citations from selected articles. Social media has potential of being an effective health promotion tool in South Africa. It presents an opportunity for scaling health promotion programs because of its low cost, its ability to have virtual communities and the ease of access eliminating geographical barriers. It also allows real-time communicatipromotion information.The older persons in our society are a special group of people in need of additional measures of care and protection. They have medical, financial, emotional and social needs. The novel Coronavirus disease 2019 (COVID-19) only exacerbates those needs. COVID-19 is a new disease, and there is limited information regarding the disease. Based on currently available information, older persons and people of any age who have serious underlying medical conditions may be at higher risk of severe illness from COVID-19. Family physicians provide care for individuals across their lifespan. Because geriatricians are internists or family physicians with post-residency training in geriatric medicine, they are major stakeholders in geriatric care. The authors are concerned about the absence of a COVID-19 response guideline/special advisory targeting the vulnerable population of older adults. https://www.selleckchem.com/products/bip-inducer-x-bix.html The management and response to COVID-19 will be implemented in part based on the local context of available resources. Nigeria has been described as a resource-constrained nation. Infection prevention in older persons in Nigeria will far outweigh the possibilities of treatment given limited resources. The aim was to recommend actionable strategies to prevent COVID-19-related morbidity or mortality among older persons in Nigeria and to promote their overall well-being during and after the pandemic. These recommendations cut across the geriatric medicine domains of physical health, mental health, functioning ability and socio-environmental situation.0 التعليقات 0 المشاركات 3 مشاهدة 0 معاينة -
ease in load during the extraction of the longwall panels. These models showed a **** greater increase in stress due to the development of the gateroad and bleeder entries--about 80% development and 20% longwall extraction. The FLAC3D model showed very good correlation between modeled and expected gateroad loading during panel extraction. The front and side abutment extent modeled was very similar to observations from this and previous panels.Monocytes are circulating innate immune cells that are functionally dysregulated during aging. However, while metabolic regulation of innate immune cell function is now well-established, only a handful of studies have examined this in the context of aging. In a recent article published in Aging Cell, Saare et al. observe comprehensive metabolic reprogramming of otherwise unstimulated monocytes isolated from older adults. These cells display increased glucose uptake and dysregulation of mitochondrial function, concomitant with activation of signaling pathways contributing to increased inflammation. These findings suggest a mechanism whereby metabolic reprogramming in aged monocytes contributes to chronic low-grade inflammation and open new avenues of investigation into the biological underpinning of inflammaging.Neurodegeneration in Parkinson's disease is characterized by the accumulation of alpha-synuclein, a protein encoded by the SNCA gene, in neurons. In addition to mutations, many polymorphisms have been identified in this gene, and one of these is a dinucleotide microsatellite SNCA-Rep1. The mechanisms by which specific configurations of SNCA-Rep1 may contribute to the development of this disease have yet to be clarified. In our study, a relationship between long SNCA-Rep1 alleles and Parkinson's was confirmed in the Russian population. Long allelic variants of SNCA-Rep1 were shown to be associated with the hypomethylation of the CpG-sites in intron 1 of the SNCA gene. Long variants of SNCA-Rep1 are supposed to exert their effect through the hypomethylation of a transcriptionally significant region of this gene. Hypomethylation is usually associated with increased expression, which, in turn, contributes to alpha-synuclein accumulation in neuronal cytoplasm, with the latter being the main molecular marker of Parkinson's disease. Further studies are needed to establish a relationship between our finding and SNCA gene expression.Although tyrosine kinase inhibitors have brought significant success in the treatment of chronic myelogenous leukemia, the search for novel molecular targets for the treatment of this disease remains relevant. Earlier, expression of acid-sensing ion channels, ASIC1a, was demonstrated in the chronic myelogenous leukemia K562 cells. Three-finger toxins from the black mamba (Dendroaspis polylepis) venom, mambalgins, have been shown to efficiently inhibit homo- and heteromeric channels containing the ASIC1a subunit; however, their use as possible antitumor agents had not been examined. In this work, using the patch-clamp technique, we detected, for the first time, an activation of ASIC1a channels in the leukemia K562 cells in response to an extracellular pH decrease. Recombinant mambalgin-2 was shown to inhibit ASIC1a activity and suppress the proliferation of the K562 cells with a half-maximal effective concentration (EC50) ~ 0.2 μM. Maximum mambalgin-2 inhibitory effect is achieved after 72 h of incubation with cells and when the pH of the cell medium reaches ~ 6.6. In the K562 cells, mambalgin-2 caused arrest of the cell cycle in the G1 phase and reduced the phosphorylation of G1 cell cycle phase regulators cyclin D1 and cyclin-dependent kinase CDK4, without affecting the activity of CDK6 kinase. Thus, recombinant mambalgin-2 can be considered a prototype of a new type of drugs for the treatment of chronic myelogenous leukemia.The development of and research into new therapies that can selectively and effectively destroy tumor cells that overexpress the ErbB2 receptor is a pressing task. Recently, research into the use of type I interferons in the treatment of cancer has intensified. Cytokine therapy is aimed at activating the cells of the immune system to fight tumors, but it has drawbacks that limit its use because of a number of side effects the severity of which varies depending on the dosage and type of used cytokine. At the moment, a number of studies are being conducted regarding the use of IFNβ in oncology. The studies are aimed at mitigating the systemic action of this cytokine. https://www.selleckchem.com/products/ABT-263.html The immunocytokine complex made of a bispecific antibody against the ErbB2 receptor and recombinant IFNβ developed in this study underlies the mechanism meant to avoid the systemic action of this cytokine. Part of this study focuses on the development of full-length antibodies that bind to the ErbB2 receptor on the one hand, and bind and neutralize IFNβ, on the other hand, which allows us to consider the antibodies as a means of cytokine delivery to tumor cells.Glioma is the most aggressive type of brain tumors encountered in medical practice. The high frequency of diagnosed cases and risk of metastasis, the low efficiency of traditional therapy, and the usually unfavorable prognosis for patients dictate the need to develop alternative or combined approaches for an early diagnosis and treatment of this pathology. High expectations are placed on the use of upconversion nanoparticles (UCNPs). In this study, we have produced and characterized UCNPs doped with the rare-earth elements ytterbium and thulium. Our UCNPs had photoluminescence emission maxima in the visible and infrared spectral regions, which allow for deep optical imaging of tumor cells in the brain. Moreover, we evaluated the toxicity effects of our UCNPs on a normal brain and glioma cells. It was revealed that our UCNPs are non-toxic to glioma cells but have a moderate cytotoxic effect on primary neuronal cultures at high concentrations, a condition that is characterized by a decreased cellular viability and changes in the functional metabolic activity of neuron-glial networks. Despite the great potential associated with the use of these UCNPs as fluorescent markers, there is a need for further studies on the rate of the UCNPs accumulation and excretion in normal and tumor brain cells, and the use of their surface modifications in order to reduce their cytotoxic effects.
ease in load during the extraction of the longwall panels. These models showed a much greater increase in stress due to the development of the gateroad and bleeder entries--about 80% development and 20% longwall extraction. The FLAC3D model showed very good correlation between modeled and expected gateroad loading during panel extraction. The front and side abutment extent modeled was very similar to observations from this and previous panels.Monocytes are circulating innate immune cells that are functionally dysregulated during aging. However, while metabolic regulation of innate immune cell function is now well-established, only a handful of studies have examined this in the context of aging. In a recent article published in Aging Cell, Saare et al. observe comprehensive metabolic reprogramming of otherwise unstimulated monocytes isolated from older adults. These cells display increased glucose uptake and dysregulation of mitochondrial function, concomitant with activation of signaling pathways contributing to increased inflammation. These findings suggest a mechanism whereby metabolic reprogramming in aged monocytes contributes to chronic low-grade inflammation and open new avenues of investigation into the biological underpinning of inflammaging.Neurodegeneration in Parkinson's disease is characterized by the accumulation of alpha-synuclein, a protein encoded by the SNCA gene, in neurons. In addition to mutations, many polymorphisms have been identified in this gene, and one of these is a dinucleotide microsatellite SNCA-Rep1. The mechanisms by which specific configurations of SNCA-Rep1 may contribute to the development of this disease have yet to be clarified. In our study, a relationship between long SNCA-Rep1 alleles and Parkinson's was confirmed in the Russian population. Long allelic variants of SNCA-Rep1 were shown to be associated with the hypomethylation of the CpG-sites in intron 1 of the SNCA gene. Long variants of SNCA-Rep1 are supposed to exert their effect through the hypomethylation of a transcriptionally significant region of this gene. Hypomethylation is usually associated with increased expression, which, in turn, contributes to alpha-synuclein accumulation in neuronal cytoplasm, with the latter being the main molecular marker of Parkinson's disease. Further studies are needed to establish a relationship between our finding and SNCA gene expression.Although tyrosine kinase inhibitors have brought significant success in the treatment of chronic myelogenous leukemia, the search for novel molecular targets for the treatment of this disease remains relevant. Earlier, expression of acid-sensing ion channels, ASIC1a, was demonstrated in the chronic myelogenous leukemia K562 cells. Three-finger toxins from the black mamba (Dendroaspis polylepis) venom, mambalgins, have been shown to efficiently inhibit homo- and heteromeric channels containing the ASIC1a subunit; however, their use as possible antitumor agents had not been examined. In this work, using the patch-clamp technique, we detected, for the first time, an activation of ASIC1a channels in the leukemia K562 cells in response to an extracellular pH decrease. Recombinant mambalgin-2 was shown to inhibit ASIC1a activity and suppress the proliferation of the K562 cells with a half-maximal effective concentration (EC50) ~ 0.2 μM. Maximum mambalgin-2 inhibitory effect is achieved after 72 h of incubation with cells and when the pH of the cell medium reaches ~ 6.6. In the K562 cells, mambalgin-2 caused arrest of the cell cycle in the G1 phase and reduced the phosphorylation of G1 cell cycle phase regulators cyclin D1 and cyclin-dependent kinase CDK4, without affecting the activity of CDK6 kinase. Thus, recombinant mambalgin-2 can be considered a prototype of a new type of drugs for the treatment of chronic myelogenous leukemia.The development of and research into new therapies that can selectively and effectively destroy tumor cells that overexpress the ErbB2 receptor is a pressing task. Recently, research into the use of type I interferons in the treatment of cancer has intensified. Cytokine therapy is aimed at activating the cells of the immune system to fight tumors, but it has drawbacks that limit its use because of a number of side effects the severity of which varies depending on the dosage and type of used cytokine. At the moment, a number of studies are being conducted regarding the use of IFNβ in oncology. The studies are aimed at mitigating the systemic action of this cytokine. https://www.selleckchem.com/products/ABT-263.html The immunocytokine complex made of a bispecific antibody against the ErbB2 receptor and recombinant IFNβ developed in this study underlies the mechanism meant to avoid the systemic action of this cytokine. Part of this study focuses on the development of full-length antibodies that bind to the ErbB2 receptor on the one hand, and bind and neutralize IFNβ, on the other hand, which allows us to consider the antibodies as a means of cytokine delivery to tumor cells.Glioma is the most aggressive type of brain tumors encountered in medical practice. The high frequency of diagnosed cases and risk of metastasis, the low efficiency of traditional therapy, and the usually unfavorable prognosis for patients dictate the need to develop alternative or combined approaches for an early diagnosis and treatment of this pathology. High expectations are placed on the use of upconversion nanoparticles (UCNPs). In this study, we have produced and characterized UCNPs doped with the rare-earth elements ytterbium and thulium. Our UCNPs had photoluminescence emission maxima in the visible and infrared spectral regions, which allow for deep optical imaging of tumor cells in the brain. Moreover, we evaluated the toxicity effects of our UCNPs on a normal brain and glioma cells. It was revealed that our UCNPs are non-toxic to glioma cells but have a moderate cytotoxic effect on primary neuronal cultures at high concentrations, a condition that is characterized by a decreased cellular viability and changes in the functional metabolic activity of neuron-glial networks. Despite the great potential associated with the use of these UCNPs as fluorescent markers, there is a need for further studies on the rate of the UCNPs accumulation and excretion in normal and tumor brain cells, and the use of their surface modifications in order to reduce their cytotoxic effects.0 التعليقات 0 المشاركات 8 مشاهدة 0 معاينة -
To investigate the correlation between postoperative metamorphopsia and macular deformation after macular hole (MH) surgery.
This study included 28 eyes of 28 patients who underwent vitrectomy and internal limiting membrane (ILM) removal for idiopathic MH. The retinal vasculatures were compared between preoperative and postoperative photographs, and postoperative deformation of the macula was assessed as deformation of the square grid. The displacement of each node was measured, and deformation of the grid was calculated as differences in the coordinates of the adjacent nodes. These parameters were analyzed to find correlation with metamorphopsia measured using the M-charts after 6 postoperative months.
The average deformations in the vertical and horizontal lines of the grid were 94.29 µm and 49.72 µm, respectively. Perifoveal deformation was significantly greater than parafoveal deformation (P = 0.001∼0.019). The multiple regression analysis demonstrated that the vertical M-score correlated with superior perifoveal deformation of the vertical line on the fovea (P = 0.036), and the horizontal M-score correlated with temporal perifoveal deformation of the horizontal line on the fovea (P = 0.032).
The parafoveal tissue was displaced with the fovea concurrently after ILM removal in MH surgery causing perifoveal deformation, which correlated with postoperative metamorphopsia.
The parafoveal tissue was displaced with the fovea concurrently after ILM removal in MH surgery causing perifoveal deformation, which correlated with postoperative metamorphopsia.
Craniosynostosis treatment modalities have changed over time. These have included open calvarial remodeling, suturectomy with helmet molding, hand-powered distraction devices, and spring-mediated distraction. Implantable springs were first described for their use in treatment of craniosynostosis in 1998 (Lauritzen et al, Plast Reconstr Surg 121;2008545-554). They have been used for the correction of craniosynostosis involving single and multiple sutures and have been placed through both endoscopic and open approaches. Their use for correction of lambdoid synostosis has been previously only described using an open approach (Arnaud et al, Child Nerv Syst 28;20121545-1549). The senior author has performed spring-mediated distraction for treating unilambdoid craniosynostosis using an endoscopic approach, which is described below and has not previously been reported by other authors.
A retrospective analysis of our series of endoscopic unilambdoid synostosis repairs is included in this article. Patients were aimal inpatient stay.
Mandible angle fractures can result in significant, long-term morbidity in children. However, management of this particular mandibular fracture type is not well-characterized in the pediatric population. This study investigated isolated mandibular angle fractures in the pediatric patients.
This was a 30-year retrospective, longitudinal cohort study of pediatric patients presenting to a single institution with mandibular angle fractures. Patient data were abstracted from electronic medical records. Subgroup analyses were completed by dentition stage.
Seventeen patients met inclusion criteria, of whom 6 (35.3%) had deciduous, 4 (23.5%) had mixed, and 7 (41.2%) had permanent dentition. Deciduous/mixed dentition patients with mobile, displaced fractures underwent ORIF, whereas those with nondisplaced fractures underwent treatment with soft diet. Among permanent dentition patients, most patients (71.4%) underwent ORIF regardless of fracture severity. The post-ORIF complication rate was 55.6%; no complicationangle fractures had substantial associated morbidity, this fracture pattern did not result in notable growth limitations/deformity.Nose augmentation with Hyaluronic acid (HA) fillers has been considered the preferred technique for minimally invasive cosmetic procedures. Despite severe complications related to HA injection are rare, none of the existing treatment protocols has been established as standard. The aim of this report is to present an alternative approach to treat nasal skin necrosis related to HA injection. A high dose of hyaluronidase - 6000 IU was applied in the nose, for the purpose of reversing a necrotic process. The present findings suggest that a high dose of hyaluronidase could be a promising approach to treat severe nasal skin necrosis caused by HA filler.Spring-assisted cranioplasty (SAC) is a minimally invasive technique for treating sagittal synostosis in young infants. Yet, follow-up data on cranial growth in patients who have undergone SAC are lacking. This project aimed to understand how the cranial shape develops during the postoperative period, from spring insertion to removal. 3D head scans of 30 consecutive infants undergoing SAC for sagittal synostosis were acquired using a handheld scanner pre-operatively, immediately postoperatively, at follow-up and at spring removal; 3D scans of 41 age-matched control subjects were also acquired. Measurements of head length, width, height, circumference, and volume were taken for all subjects; cephalic index (CI) was calculated. Statistical shape modeling was used to compute 3D average head models of sagittal patients at the different time points. SAC was performed at a mean age of 5.2 months (range 3.3-8.0) and springs were removed 4.3 months later. CI increased significantly (P less then 0.001) from pre-op (69.5% ± 2.8%) to spring removal (74.4% ± 3.9%), mainly due to the widening of head width, which became as wide as for age-matched controls; however, the CI of controls was not reached (82.3% ± 6.8%). The springs did not constrain volume changes and allowed for natural growth. Population mean shapes showed that the bony prominences seen at the sites of spring engagement settle over time, and that springs affect the overall 3D head shape of the skull. https://www.selleckchem.com/products/zx703.html In conclusion, results reaffirmed the effectiveness of SAC as a treatment method for nonsyndromic single suture sagittal synostosis.Spring-assisted surgery for the correction of scaphocephaly has gained popularity over the past 2 decades. Our unit utilizes standardized torsional springs with a central helix for spring-assisted surgery. This design allows a high degree of accuracy and reproducibility of the force vectors and force distance curves. In this manuscript, we expand on the biomechanical testing and properties of these springs. Standardization of design has enabled us to study the springs on bench and in vivo and a comprehensive repository of calvarial remodeling and spring dynamics has been acquired and analyzed.Finite element modeling is a technique utilized to predict the outcomes of spring-assisted surgery. We have found this to be a useful tool, in planning our surgical strategy and improving outcomes. This technique has also contributed significantly to the process of informed consent preoperatively. In this article, we expand on our spring design and dynamics as well as the finite element modeling used to predict and improve outcomes.
To investigate the correlation between postoperative metamorphopsia and macular deformation after macular hole (MH) surgery. This study included 28 eyes of 28 patients who underwent vitrectomy and internal limiting membrane (ILM) removal for idiopathic MH. The retinal vasculatures were compared between preoperative and postoperative photographs, and postoperative deformation of the macula was assessed as deformation of the square grid. The displacement of each node was measured, and deformation of the grid was calculated as differences in the coordinates of the adjacent nodes. These parameters were analyzed to find correlation with metamorphopsia measured using the M-charts after 6 postoperative months. The average deformations in the vertical and horizontal lines of the grid were 94.29 µm and 49.72 µm, respectively. Perifoveal deformation was significantly greater than parafoveal deformation (P = 0.001∼0.019). The multiple regression analysis demonstrated that the vertical M-score correlated with superior perifoveal deformation of the vertical line on the fovea (P = 0.036), and the horizontal M-score correlated with temporal perifoveal deformation of the horizontal line on the fovea (P = 0.032). The parafoveal tissue was displaced with the fovea concurrently after ILM removal in MH surgery causing perifoveal deformation, which correlated with postoperative metamorphopsia. The parafoveal tissue was displaced with the fovea concurrently after ILM removal in MH surgery causing perifoveal deformation, which correlated with postoperative metamorphopsia. Craniosynostosis treatment modalities have changed over time. These have included open calvarial remodeling, suturectomy with helmet molding, hand-powered distraction devices, and spring-mediated distraction. Implantable springs were first described for their use in treatment of craniosynostosis in 1998 (Lauritzen et al, Plast Reconstr Surg 121;2008545-554). They have been used for the correction of craniosynostosis involving single and multiple sutures and have been placed through both endoscopic and open approaches. Their use for correction of lambdoid synostosis has been previously only described using an open approach (Arnaud et al, Child Nerv Syst 28;20121545-1549). The senior author has performed spring-mediated distraction for treating unilambdoid craniosynostosis using an endoscopic approach, which is described below and has not previously been reported by other authors. A retrospective analysis of our series of endoscopic unilambdoid synostosis repairs is included in this article. Patients were aimal inpatient stay. Mandible angle fractures can result in significant, long-term morbidity in children. However, management of this particular mandibular fracture type is not well-characterized in the pediatric population. This study investigated isolated mandibular angle fractures in the pediatric patients. This was a 30-year retrospective, longitudinal cohort study of pediatric patients presenting to a single institution with mandibular angle fractures. Patient data were abstracted from electronic medical records. Subgroup analyses were completed by dentition stage. Seventeen patients met inclusion criteria, of whom 6 (35.3%) had deciduous, 4 (23.5%) had mixed, and 7 (41.2%) had permanent dentition. Deciduous/mixed dentition patients with mobile, displaced fractures underwent ORIF, whereas those with nondisplaced fractures underwent treatment with soft diet. Among permanent dentition patients, most patients (71.4%) underwent ORIF regardless of fracture severity. The post-ORIF complication rate was 55.6%; no complicationangle fractures had substantial associated morbidity, this fracture pattern did not result in notable growth limitations/deformity.Nose augmentation with Hyaluronic acid (HA) fillers has been considered the preferred technique for minimally invasive cosmetic procedures. Despite severe complications related to HA injection are rare, none of the existing treatment protocols has been established as standard. The aim of this report is to present an alternative approach to treat nasal skin necrosis related to HA injection. A high dose of hyaluronidase - 6000 IU was applied in the nose, for the purpose of reversing a necrotic process. The present findings suggest that a high dose of hyaluronidase could be a promising approach to treat severe nasal skin necrosis caused by HA filler.Spring-assisted cranioplasty (SAC) is a minimally invasive technique for treating sagittal synostosis in young infants. Yet, follow-up data on cranial growth in patients who have undergone SAC are lacking. This project aimed to understand how the cranial shape develops during the postoperative period, from spring insertion to removal. 3D head scans of 30 consecutive infants undergoing SAC for sagittal synostosis were acquired using a handheld scanner pre-operatively, immediately postoperatively, at follow-up and at spring removal; 3D scans of 41 age-matched control subjects were also acquired. Measurements of head length, width, height, circumference, and volume were taken for all subjects; cephalic index (CI) was calculated. Statistical shape modeling was used to compute 3D average head models of sagittal patients at the different time points. SAC was performed at a mean age of 5.2 months (range 3.3-8.0) and springs were removed 4.3 months later. CI increased significantly (P less then 0.001) from pre-op (69.5% ± 2.8%) to spring removal (74.4% ± 3.9%), mainly due to the widening of head width, which became as wide as for age-matched controls; however, the CI of controls was not reached (82.3% ± 6.8%). The springs did not constrain volume changes and allowed for natural growth. Population mean shapes showed that the bony prominences seen at the sites of spring engagement settle over time, and that springs affect the overall 3D head shape of the skull. https://www.selleckchem.com/products/zx703.html In conclusion, results reaffirmed the effectiveness of SAC as a treatment method for nonsyndromic single suture sagittal synostosis.Spring-assisted surgery for the correction of scaphocephaly has gained popularity over the past 2 decades. Our unit utilizes standardized torsional springs with a central helix for spring-assisted surgery. This design allows a high degree of accuracy and reproducibility of the force vectors and force distance curves. In this manuscript, we expand on the biomechanical testing and properties of these springs. Standardization of design has enabled us to study the springs on bench and in vivo and a comprehensive repository of calvarial remodeling and spring dynamics has been acquired and analyzed.Finite element modeling is a technique utilized to predict the outcomes of spring-assisted surgery. We have found this to be a useful tool, in planning our surgical strategy and improving outcomes. This technique has also contributed significantly to the process of informed consent preoperatively. In this article, we expand on our spring design and dynamics as well as the finite element modeling used to predict and improve outcomes.0 التعليقات 0 المشاركات 26 مشاهدة 0 معاينة
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