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1.
Singapore Med J ; 64(11): 667-676, 2023 Nov.
Article in English | MEDLINE | ID: mdl-35139631

ABSTRACT

Introduction: The coronavirus disease 2019 (COVID-19) pandemic has had an unprecedented impact in Asia and has placed significant burden on already stretched healthcare systems. We examined the impact of COVID-19 on the safety attitudes among healthcare workers (HCWs), as well as their associated demographic and occupational factors, and measures of burnout, depression and anxiety. Methods: A cross-sectional survey study utilising snowball sampling was performed involving doctors, nurses and allied health professions from 23 hospitals in Singapore, Malaysia, India and Indonesia between 29 May 2020 and 13 July 2020. This survey collated demographic data and workplace conditions and included three validated questionnaires: the Safety Attitudes Questionnaire (SAQ), Oldenburg Burnout Inventory and Hospital Anxiety and Depression Scale. We performed multivariate mixed-model regression to assess independent associations with the SAQ total percentage agree rate (PAR). Results: We obtained 3,163 responses. The SAQ total PARs were found to be 35.7%, 15.0%, 51.0% and 3.3% among the respondents from Singapore, Malaysia, India and Indonesia, respectively. Burnout scores were highest among respondents from Indonesia and lowest among respondents from India (70.9%-85.4% vs. 56.3%-63.6%, respectively). Multivariate analyses revealed that meeting burnout and depression thresholds and shifts lasting ≥12 h were significantly associated with lower SAQ total PAR. Conclusion: Addressing the factors contributing to high burnout and depression and placing strict limits on work hours per shift may contribute significantly towards improving safety culture among HCWs and should remain priorities during the pandemic.


Subject(s)
COVID-19 , Pandemics , Humans , Cross-Sectional Studies , COVID-19/epidemiology , Burnout, Psychological , Health Personnel
2.
Infection ; 51(2): 407-416, 2023 Apr.
Article in English | MEDLINE | ID: mdl-35922704

ABSTRACT

PURPOSE: The clinical course of COVID-19 has been complicated by secondary infections, including bacterial and fungal infections. The rapid rise in the incidence of invasive mucormycosis in these patients is very much concerning. COVID-19-associated mucormycosis was detected in huge numbers during the second wave of the COVID-19 pandemic in India, with several predisposing factors indicated in its pathogenesis. This study aimed to evaluate the epidemiology, predisposing factor, cumulative mortality and factors affecting outcomes among the coronavirus disease COVID-19-associated mucormycosis (CAM). METHODS: A multicenter retrospective study across three tertiary health care centers in Southern part of India was conducted during April-June 2021. RESULTS: Among the 217 cases of CAM, mucormycosis affecting the nasal sinuses was the commonest, affecting 95 (44%) of the patients, orbital extension seen in 84 (38%), pulmonary (n = 25, 12%), gastrointestinal (n = 6, 3%), isolated cerebral (n = 2) and disseminated mucormycosis (n = 2). Diabetes mellitus, high-dose systemic steroids were the most common underlying disease among CAM patients. The mucormycosis-associated case-fatality at 6 weeks was 14%, cerebral or GI or disseminated mucormycosis had 9 times higher risk of death compared to other locations. Extensive surgical debridement along with sequential antifungal drug treatment improved the survival in mucormycosis patients. CONCLUSION: Judicious and appropriate management of the predisposing factor and factors affecting mortality associated with CAM with multi-disciplinary approach and timely surgical and medical management can be much helpful in achieving a successful outcome.


Subject(s)
COVID-19 , Mucormycosis , Humans , Mucormycosis/epidemiology , Mucormycosis/therapy , Retrospective Studies , Pandemics , COVID-19/complications , COVID-19/epidemiology , COVID-19/therapy , India/epidemiology , Causality , Antifungal Agents/therapeutic use
4.
Biosystems ; 199: 104313, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33259890

ABSTRACT

Detection of molecular level biomedical event extraction plays a vital role in creating and visualizing the applications related to natural language processing. Cystic Fibrosis is an inherited genetic and debilitating pathology involving the respiratory and digestive systems. The excessive production of thick sticky mucus on the outside of the cells is the main consequence of such disease. This includes disease prevention and medical search to signify the occurrence and detection of event triggers, which is regarded as a proper step in an event extraction of molecular level in biomedical applications. In this model, use a rich set of extracted features to feed the machine learning classifier that helps in better extraction of events. The study uses an automatic feature selection and a classification model using Radial Belief Neural Network (RBNN) for the optimal detection of molecular biomedical event detection. The Radial Belief Neural Network (RBNN) is the proposed system is implemented and it is the classifier to give accurate result of the disease detection. These three algorithms are used to enhance the generalization performance and scalability of detecting the molecular event triggers. The validation is conducted on the cystic fibrosis event trigger based on the gene ontology bio system using the RBNN model with a lung molecular event-level extraction dataset. The extensive computation shows that the Radial Belief Neural Network (RBNN) is proposed to given the better performance results like Accuracy, Sensitivity, Specificity, F-measure and Execution time.


Subject(s)
Biomedical Research/methods , Cystic Fibrosis/prevention & control , Data Mining/methods , Gene Ontology , Neural Networks, Computer , Algorithms , Cystic Fibrosis/diagnosis , Cystic Fibrosis/genetics , Gene Expression Regulation , Lung/metabolism , Lung/pathology , Models, Theoretical , Mutation
5.
J Thromb Thrombolysis ; 50(4): 921-928, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32337652

ABSTRACT

Intravenously administered tissue plasminogen activator (IV-tPA), dose determined by patients' body-weight, remains the only approved drug treatment for acute ischemic stroke (AIS). Since a shorter onset-to-treatment time results in better functional outcome, treatment is often initiated according to the estimated or last-known body-weight of the patient. This approach may result in underdosing or overdosing of tPA. In this multicenter retrospective study, we evaluated the extent of error in tPA dosing in our AIS cohort and its impact on functional outcome and symptomatic intracranial hemorrhage (SICH). Consecutive AIS patients, receiving IV-tPA, dose determined by the estimated body-weight, at three tertiary centers between January and December 2017 were included. Collected data included information about demographics, cardiovascular risk factors, stroke subtype and National Institute of Health Stroke Scale (NIHSS) score. Estimated and measured body-weights were recorded. Modified Rankin scale (mRS) of 2 or more defined unfavorable outcome. The study included 150 patients. Median age was 64 -years (IQR 55-75) with male preponderance (67%) and median NIHSS score of 9 points (IQR 6-17). Mean measured weight of our study population was 58 (SD 13) kg. Median difference between actual and estimated body-weight was 3 kg (IQR 1.5-6). Difference was more than 10% in 35 (23.3%) patients. Good functional outcome (mRS 0-1) was achieved by 74 (49.3%) patients and 10 (6.8%) developed SICH. NIHSS (OR 1.288; 95% CI 1.157-1.435, p < 0.001) and large artery atherosclerosis (OR 5.878; 95% CI 1.929-17.910, p = 0.002) were independent predictors of unfavorable functional outcome. Our finding of the statistically insignificant 2.5-fold increase in poor outcomes among patients where the estimated and actual weight differed by more than 10% should be interpreted with caution due to the limited sample size. Significant difference occurs between estimated and actual body-weight in a considerable proportion of thrombolysed AIS patients. However, this discrepancy does not affect functional outcome or the risk of SICH.


Subject(s)
Fibrinolytic Agents/administration & dosage , Stroke/drug therapy , Tissue Plasminogen Activator/administration & dosage , Aged , Body Weight , Dose-Response Relationship, Drug , Female , Fibrinolytic Agents/therapeutic use , Humans , Male , Middle Aged , Retrospective Studies , Tissue Plasminogen Activator/therapeutic use , Treatment Outcome
6.
Ann Indian Acad Neurol ; 11(1): 37-40, 2008 Jan.
Article in English | MEDLINE | ID: mdl-19966977

ABSTRACT

BACKGROUND: Assessment of Quality of life (QoL) is fast assuming significance as the measure of health in many disorders. AIM: To correlate clinical severity and QoL in patients with Wilson's disease (WD). MATERIALS AND METHODS: We evaluated patients of WD on regular follow up for at least two years and aged over 18 years using Neurological Symptom Score (NSS) for clinical severity and WHO-BREF for QoL at a university teaching hospital. Patients with inability to respond to the questionnaire due to behavioral problems, low IQ or other disease related factors were excluded. These 30 patients (M:F:: 23:7) had a mean age of 27.97 +/- 11.16 years at evaluation and the mean duration of treatment of 9.2 +/- 6.4 years. RESULTS: All four domains of WHO-QoL-BREF viz., Physical, Psychological, Social and Environmental correlated well with each other (p < 0.01). The NSS correlated inversely with the physical domain (p < 0.02), while the duration of treatment had a positive correlation with the physical domain (p < 0.01). None of the other features of QoL showed any significant correlation with age, NSS or duration of treatment. CONCLUSION: QoL is complementary to formal neurological assessment and should be routinely incorporated in the evaluation of outcome of patients with WD and other chronic neurological disorders.

7.
Oncogene ; 25(6): 899-906, 2006 Feb 09.
Article in English | MEDLINE | ID: mdl-16247467

ABSTRACT

Galpha(12), the alpha-subunit of G12, which has been referred to as the gep oncogene, stimulates mitogenic pathways in different cell types and readily induces neoplastic transformation of fibroblast cell lines. Recently, we have shown that the oncogenic pathway activated by Galpha(12) involves the receptor tyrosine kinase platelet derived growth factor receptor-alpha (PDGFRalpha) and JAK3. In the present study, we demonstrate that the GTPase-deficient activated mutant of Galpha(12) activates signal transducer and activator of transcription 3 (STAT3) via PDGFRalpha as well as JAK3. Here we show that Galpha(12) stimulates the phosphorylation of STAT3 at both Tyrosine-705 and Serine-727 residues. Studies to delineate the mechanism by which Galpha(12) stimulates STAT3 have indicated that the Tyrosine-705-phosphorylation of STAT3 involves the tyrosine kinases, Janus Kinase-3 as well as Src kinase, whereas the Serine-727 phosphorylation of STAT3 occurs via the receptor tyrosine kinase, PDGFRalpha and phosphatidylinositol 3-OH kinase pathway. Our results also indicate that the coexpression of the dominant negative, DNA binding mutant of STAT3 (STAT3DB) inhibits the foci formation as well as anchorage-independent growth of Galpha(12)QL-transfectants, thereby establishing the critical role of STAT3 in Galpha(12)QL-mediated neoplastic cell growth. The results presented here demonstrate, for the first time, the ability of Galpha(12) to recruit multiple receptor-, nonreceptor-, and Ser/Thr kinases to stimulate STAT3-signaling to promote neoplastic transformation.


Subject(s)
Cell Transformation, Neoplastic/genetics , GTP-Binding Protein alpha Subunits, G12-G13/genetics , GTP-Binding Protein alpha Subunits, G12-G13/metabolism , STAT3 Transcription Factor/metabolism , 3T3 Cells/pathology , Animals , Cell Transformation, Neoplastic/metabolism , Cells, Cultured , Fibroblasts/metabolism , Fibroblasts/pathology , Humans , Janus Kinase 3 , Mice , Mutation , Oncogenes , Phosphatidylinositol 3-Kinases/metabolism , Phosphorylation , Protein-Tyrosine Kinases/metabolism , Receptor, Platelet-Derived Growth Factor alpha/metabolism , Serine/metabolism , Signal Transduction , Tyrosine/metabolism , src-Family Kinases/genetics , src-Family Kinases/metabolism
8.
Bioresour Technol ; 96(16): 1826-31, 2005 Nov.
Article in English | MEDLINE | ID: mdl-16051090

ABSTRACT

The flame retardancy of medium density fiberboard (MDF) made from mixture of rubberwood fibers and recycled old corrugated containers was studied. Aluminum trihydroxide (ATH) was used as a fire retardant additive and mixed with the fibers to manufacture experimental MDF panels using wet process. Phenol formaldehyde (PF) resin in liquid, 2% based on oven dry weight of fibers, was used along with 0%, 10%, 15% and 20% of ATH. The flame retardant test was done using the limiting oxygen index (LOI) test. The other properties investigated include internal bond strength, thickness swelling and water absorption. The results showed that ATH loading increased as the LOI of MDF increased. This demonstrated that ATH could improved the fire retardant property of MDF at sufficient loading. An increase in concentration of ATH showed an increase in the IB values of MDF made without resin. MDF panels made without resin showed a progressive increase in internal bond as the composition of recycled old corrugated containers fiber increased. Addition of resin improved internal bond strength and reduced thickness swelling, and water absorption. Thickness swelling of panel increased as the composition of recycled old corrugated containers fiber increased. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX) showed that there is indication of ATH and resin filling the void space in between fibers.


Subject(s)
Aluminum Hydroxide/chemistry , Conservation of Natural Resources/methods , Construction Materials/analysis , Flame Retardants/analysis , Hevea/chemistry , Wood , Hot Temperature , Materials Testing , Product Packaging
10.
Anaesthesia ; 56(11): 1059-68, 2001 Nov.
Article in English | MEDLINE | ID: mdl-11703238

ABSTRACT

This review highlights the pharmacology, pharmacokinetics, pharmacological actions, therapeutic uses and adverse effects of cannabinoids. The effect of cannabinoids on anaesthesia is mentioned briefly. Important advances have taken place in cannabinoid research over the last few years and have led to the discovery of novel ligands. The possible clinical applications of these ligands and the direction of future research are discussed.


Subject(s)
Cannabinoids/pharmacology , Cannabis , Phytotherapy/methods , Anesthesia , Cannabinoids/adverse effects , Cannabinoids/therapeutic use , Cannabis/adverse effects , Drug Interactions , Humans , Muscle Spasticity/drug therapy , Pain/drug therapy , Plant Extracts/adverse effects , Plant Extracts/pharmacology , Plant Extracts/therapeutic use
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