NobleBlocks

College of Medicine & Sagore Dutta Hospital

Hospital / health systemKolkata, India

Research output, citation impact, and the most-cited recent papers from College of Medicine & Sagore Dutta Hospital (India). Aggregated across the NobleBlocks index of 300M+ scholarly works.

Total works
1.1K
Citations
15.5K
h-index
47
i10-index
366
Also known as
College of Medicine & Sagore Dutta HospitalSagar Dutta Medical College

Top-cited papers from College of Medicine & Sagore Dutta Hospital

Cancer Incidence, Mortality, Years of Life Lost, Years Lived With Disability, and Disability-Adjusted Life Years for 29 Cancer Groups From 2010 to 2019
Jonathan Kocarnik, Kelly Compton, Frances Dean, Weijia Fu +4 more
2021· JAMA Oncology2.0Kdoi:10.1001/jamaoncol.2021.6987

IMPORTANCE: The Global Burden of Diseases, Injuries, and Risk Factors Study 2019 (GBD 2019) provided systematic estimates of incidence, morbidity, and mortality to inform local and international efforts toward reducing cancer burden. OBJECTIVE: To estimate cancer burden and trends globally for 204 countries and territories and by Sociodemographic Index (SDI) quintiles from 2010 to 2019. EVIDENCE REVIEW: The GBD 2019 estimation methods were used to describe cancer incidence, mortality, years lived with disability, years of life lost, and disability-adjusted life years (DALYs) in 2019 and over the past decade. Estimates are also provided by quintiles of the SDI, a composite measure of educational attainment, income per capita, and total fertility rate for those younger than 25 years. Estimates include 95% uncertainty intervals (UIs). FINDINGS: In 2019, there were an estimated 23.6 million (95% UI, 22.2-24.9 million) new cancer cases (17.2 million when excluding nonmelanoma skin cancer) and 10.0 million (95% UI, 9.36-10.6 million) cancer deaths globally, with an estimated 250 million (235-264 million) DALYs due to cancer. Since 2010, these represented a 26.3% (95% UI, 20.3%-32.3%) increase in new cases, a 20.9% (95% UI, 14.2%-27.6%) increase in deaths, and a 16.0% (95% UI, 9.3%-22.8%) increase in DALYs. Among 22 groups of diseases and injuries in the GBD 2019 study, cancer was second only to cardiovascular diseases for the number of deaths, years of life lost, and DALYs globally in 2019. Cancer burden differed across SDI quintiles. The proportion of years lived with disability that contributed to DALYs increased with SDI, ranging from 1.4% (1.1%-1.8%) in the low SDI quintile to 5.7% (4.2%-7.1%) in the high SDI quintile. While the high SDI quintile had the highest number of new cases in 2019, the middle SDI quintile had the highest number of cancer deaths and DALYs. From 2010 to 2019, the largest percentage increase in the numbers of cases and deaths occurred in the low and low-middle SDI quintiles. CONCLUSIONS AND RELEVANCE: The results of this systematic analysis suggest that the global burden of cancer is substantial and growing, with burden differing by SDI. These results provide comprehensive and comparable estimates that can potentially inform efforts toward equitable cancer control around the world.

Burden of 375 diseases and injuries, risk-attributable burden of 88 risk factors, and healthy life expectancy in 204 countries and territories, including 660 subnational locations, 1990–2023: a systematic analysis for the Global Burden of Disease Study 2023
Simon I Hay, Kanyin Liane Ong, Damian Santomauro, A Bhoomadevi +4 more
2025· The Lancet328doi:10.1016/s0140-6736(25)01637-x

BACKGROUND: For more than three decades, the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) has provided a framework to quantify health loss due to diseases, injuries, and associated risk factors. This paper presents GBD 2023 findings on disease and injury burden and risk-attributable health loss, offering a global audit of the state of world health to inform public health priorities. This work captures the evolving landscape of health metrics across age groups, sexes, and locations, while reflecting on the remaining post-COVID-19 challenges to achieving our collective global health ambitions. METHODS: The GBD 2023 combined analysis estimated years lived with disability (YLDs), years of life lost (YLLs), and disability-adjusted life-years (DALYs) for 375 diseases and injuries, and risk-attributable burden associated with 88 modifiable risk factors. Of the more than 310 000 total data sources used for all GBD 2023 (about 30% of which were new to this estimation round), more than 120 000 sources were used for estimation of disease and injury burden and 59 000 for risk factor estimation, and included vital registration systems, surveys, disease registries, and published scientific literature. Data were analysed using previously established modelling approaches, such as disease modelling meta-regression version 2.1 (DisMod-MR 2.1) and comparative risk assessment methods. Diseases and injuries were categorised into four levels on the basis of the established GBD cause hierarchy, as were risk factors using the GBD risk hierarchy. Estimates stratified by age, sex, location, and year from 1990 to 2023 were focused on disease-specific time trends over the 2010-23 period and presented as counts (to three significant figures) and age-standardised rates per 100 000 person-years (to one decimal place). For each measure, 95% uncertainty intervals [UIs] were calculated with the 2·5th and 97·5th percentile ordered values from a 250-draw distribution. FINDINGS: Total numbers of global DALYs grew 6·1% (95% UI 4·0-8·1), from 2·64 billion (2·46-2·86) in 2010 to 2·80 billion (2·57-3·08) in 2023, but age-standardised DALY rates, which account for population growth and ageing, decreased by 12·6% (11·0-14·1), revealing large long-term health improvements. Non-communicable diseases (NCDs) contributed 1·45 billion (1·31-1·61) global DALYs in 2010, increasing to 1·80 billion (1·63-2·03) in 2023, alongside a concurrent 4·1% (1·9-6·3) reduction in age-standardised rates. Based on DALY counts, the leading level 3 NCDs in 2023 were ischaemic heart disease (193 million [176-209] DALYs), stroke (157 million [141-172]), and diabetes (90·2 million [75·2-107]), with the largest increases in age-standardised rates since 2010 occurring for anxiety disorders (62·8% [34·0-107·5]), depressive disorders (26·3% [11·6-42·9]), and diabetes (14·9% [7·5-25·6]). Remarkable health gains were made for communicable, maternal, neonatal, and nutritional (CMNN) diseases, with DALYs falling from 874 million (837-917) in 2010 to 681 million (642-736) in 2023, and a 25·8% (22·6-28·7) reduction in age-standardised DALY rates. During the COVID-19 pandemic, DALYs due to CMNN diseases rose but returned to pre-pandemic levels by 2023. From 2010 to 2023, decreases in age-standardised rates for CMNN diseases were led by rate decreases of 49·1% (32·7-61·0) for diarrhoeal diseases, 42·9% (38·0-48·0) for HIV/AIDS, and 42·2% (23·6-56·6) for tuberculosis. Neonatal disorders and lower respiratory infections remained the leading level 3 CMNN causes globally in 2023, although both showed notable rate decreases from 2010, declining by 16·5% (10·6-22·0) and 24·8% (7·4-36·7), respectively. Injury-related age-standardised DALY rates decreased by 15·6% (10·7-19·8) over the same period. Differences in burden due to NCDs, CMNN diseases, and injuries persisted across age, sex, time, and location. Based on our risk analysis, nearly 50% (1·27 billion [1·18-1·38]) of the roughly 2·80 billion total global DALYs in 2023 were attributable to the 88 risk factors analysed in GBD. Globally, the five level 3 risk factors contributing the highest proportion of risk-attributable DALYs were high systolic blood pressure (SBP), particulate matter pollution, high fasting plasma glucose (FPG), smoking, and low birthweight and short gestation-with high SBP accounting for 8·4% (6·9-10·0) of total DALYs. Of the three overarching level 1 GBD risk factor categories-behavioural, metabolic, and environmental and occupational-risk-attributable DALYs rose between 2010 and 2023 only for metabolic risks, increasing by 30·7% (24·8-37·3); however, age-standardised DALY rates attributable to metabolic risks decreased by 6·7% (2·0-11·0) over the same period. For all but three of the 25 leading level 3 risk factors, age-standardised rates dropped between 2010 and 2023-eg, declining by 54·4% (38·7-65·3) for unsafe sanitation, 50·5% (33·3-63·1) for unsafe water source, and 45·2% (25·6-72·0) for no access to handwashing facility, and by 44·9% (37·3-53·5) for child growth failure. The three leading level 3 risk factors for which age-standardised attributable DALY rates rose were high BMI (10·5% [0·1 to 20·9]), drug use (8·4% [2·6 to 15·3]), and high FPG (6·2% [-2·7 to 15·6]; non-significant). INTERPRETATION: Our findings underscore the complex and dynamic nature of global health challenges. Since 2010, there have been large decreases in burden due to CMNN diseases and many environmental and behavioural risk factors, juxtaposed with sizeable increases in DALYs attributable to metabolic risk factors and NCDs in growing and ageing populations. This long-observed consequence of the global epidemiological transition was only temporarily interrupted by the COVID-19 pandemic. The substantially decreasing CMNN disease burden, despite the 2008 global financial crisis and pandemic-related disruptions, is one of the greatest collective public health successes known. However, these achievements are at risk of being reversed due to major cuts to development assistance for health globally, the effects of which will hit low-income countries with high burden the hardest. Without sustained investment in evidence-based interventions and policies, progress could stall or reverse, leading to widespread human costs and geopolitical instability. Moreover, the rising NCD burden necessitates intensified efforts to mitigate exposure to leading risk factors-eg, air pollution, smoking, and metabolic risks, such as high SBP, BMI, and FPG-including policies that promote food security, healthier diets, physical activity, and equitable and expanded access to potential treatments, such as GLP-1 receptor agonists. Decisive, coordinated action is needed to address long-standing yet growing health challenges, including depressive and anxiety disorders. Yet this can be only part of the solution. Our response to the NCD syndemic-the complex interaction of multiple health risks, social determinants, and systemic challenges-will define the future landscape of global health. To ensure human wellbeing, economic stability, and social equity, global action to sustain and advance health gains must prioritise reducing disparities by addressing socioeconomic and demographic determinants, ensuring equitable health-care access, tackling malnutrition, strengthening health systems, and improving vaccination coverage. We live in times of great opportunity. FUNDING: Gates Foundation and Bloomberg Philanthropies.

Principles Of Physiology
Robert M. Berne, Matthew N. Levy
1990223

CONTENTS: Part I. Cell Physiology. Cellular Membranes and Transmembrane Transport of Solutes and Water. Ionic Equilibria and Resting Membrane Potentials. Generation and Conduction of Action Potentials. Synaptic Transmission. Membrane Receptors. Part II. Nervous System. Cellular Organization of the Nervous System. The General Sensory System. Special Senses. The Motor System. The Automatic Nervous System and its Control. Higher Functions of the Nervous System.Part III. Muscle. The Molecular Basis of Contraction. Muscles Acting on Skeleton Muscle in the Walls of Hollow Organs. Part IV. Cardiovascular System. Blood and Hemostasis. Overview of the Circulation. Electrical Activity of the Heart. The Cardiac Pump. Regulation of the Heartbeat. Hemodynamics. The Arterial System. The Microcirculation and Lymphatics. The Peripheral Circulation and Its Control. Control of Cardiac Output: Coupling of the Heart and Blood Vessels. Special Circulations. Interplay of Central and Peripheral Factors in the Control of the Circulation. Part V. Respiratory System. An Overview of the Respiratory System. Mechanical Aspects of Breathing. Pulmonary and Bronchial Circulations and the Distribution of Ventilation and Perfusion. Transport of Oxygen and Carbon Dioxide Between Lungs and Cells of the Body. Control of Breathing. Part VI. Gastrointestinal System. Motility of the Gastrointestinal Tract. Gastrointestinal Secretions. Digestion and Absorption. Part VII. Renal System. Elements of Renal Function. Solute and Water Transport Along the Nephron: Tubular Function. Control of Body Fluid Volume and Osmolality. Renal Regulation of Potassium, Calcium, Magnesium, and Phosphate Balance. Role of the Kidney in Acid-Base Balance. Part VIII. Endocrine System. General Principles of Endocrine Physiology. Whole Body Metabolism. Hormones of the Pancreatic Islets. Endocrine Regulation of the Metabolism of Calcium and Related Minerals. The Hypothalamus and Pituitary Gland. The Thyroid Gland. The Adrenal Cortex. The Adrenal Medulla. Overview of Reproductive Function. Male Reproduction. Female Reproduction.

Global burden of 292 causes of death in 204 countries and territories and 660 subnational locations, 1990–2023: a systematic analysis for the Global Burden of Disease Study 2023
Mohsen Naghavi, Hmwe Hmwe Kyu, A Bhoomadevi, Mohammad Amin Aalipour +4 more
2025· The Lancet219doi:10.1016/s0140-6736(25)01917-8

BACKGROUND: Timely and comprehensive analyses of causes of death stratified by age, sex, and location are essential for shaping effective health policies aimed at reducing global mortality. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2023 provides cause-specific mortality estimates measured in counts, rates, and years of life lost (YLLs). GBD 2023 aimed to enhance our understanding of the relationship between age and cause of death by quantifying the probability of dying before age 70 years (70q0) and the mean age at death by cause and sex. This study enables comparisons of the impact of causes of death over time, offering a deeper understanding of how these causes affect global populations. METHODS: GBD 2023 produced estimates for 292 causes of death disaggregated by age-sex-location-year in 204 countries and territories and 660 subnational locations for each year from 1990 until 2023. We used a modelling tool developed for GBD, the Cause of Death Ensemble model (CODEm), to estimate cause-specific death rates for most causes. We computed YLLs as the product of the number of deaths for each cause-age-sex-location-year and the standard life expectancy at each age. Probability of death was calculated as the chance of dying from a given cause in a specific age period, for a specific population. Mean age at death was calculated by first assigning the midpoint age of each age group for every death, followed by computing the mean of all midpoint ages across all deaths attributed to a given cause. We used GBD death estimates to calculate the observed mean age at death and to model the expected mean age across causes, sexes, years, and locations. The expected mean age reflects the expected mean age at death for individuals within a population, based on global mortality rates and the population's age structure. Comparatively, the observed mean age represents the actual mean age at death, influenced by all factors unique to a location-specific population, including its age structure. As part of the modelling process, uncertainty intervals (UIs) were generated using the 2·5th and 97·5th percentiles from a 250-draw distribution for each metric. Findings are reported as counts and age-standardised rates. Methodological improvements for cause-of-death estimates in GBD 2023 include a correction for the misclassification of deaths due to COVID-19, updates to the method used to estimate COVID-19, and updates to the CODEm modelling framework. This analysis used 55 761 data sources, including vital registration and verbal autopsy data as well as data from surveys, censuses, surveillance systems, and cancer registries, among others. For GBD 2023, there were 312 new country-years of vital registration cause-of-death data, 3 country-years of surveillance data, 51 country-years of verbal autopsy data, and 144 country-years of other data types that were added to those used in previous GBD rounds. FINDINGS: The initial years of the COVID-19 pandemic caused shifts in long-standing rankings of the leading causes of global deaths: it ranked as the number one age-standardised cause of death at Level 3 of the GBD cause classification hierarchy in 2021. By 2023, COVID-19 dropped to the 20th place among the leading global causes, returning the rankings of the leading two causes to those typical across the time series (ie, ischaemic heart disease and stroke). While ischaemic heart disease and stroke persist as leading causes of death, there has been progress in reducing their age-standardised mortality rates globally. Four other leading causes have also shown large declines in global age-standardised mortality rates across the study period: diarrhoeal diseases, tuberculosis, stomach cancer, and measles. Other causes of death showed disparate patterns between sexes, notably for deaths from conflict and terrorism in some locations. A large reduction in age-standardised rates of YLLs occurred for neonatal disorders. Despite this, neonatal disorders remained the leading cause of global YLLs over the period studied, except in 2021, when COVID-19 was temporarily the leading cause. Compared to 1990, there has been a considerable reduction in total YLLs in many vaccine-preventable diseases, most notably diphtheria, pertussis, tetanus, and measles. In addition, this study quantified the mean age at death for all-cause mortality and cause-specific mortality and found noticeable variation by sex and location. The global all-cause mean age at death increased from 46·8 years (95% UI 46·6-47·0) in 1990 to 63·4 years (63·1-63·7) in 2023. For males, mean age increased from 45·4 years (45·1-45·7) to 61·2 years (60·7-61·6), and for females it increased from 48·5 years (48·1-48·8) to 65·9 years (65·5-66·3), from 1990 to 2023. The highest all-cause mean age at death in 2023 was found in the high-income super-region, where the mean age for females reached 80·9 years (80·9-81·0) and for males 74·8 years (74·8-74·9). By comparison, the lowest all-cause mean age at death occurred in sub-Saharan Africa, where it was 38·0 years (37·5-38·4) for females and 35·6 years (35·2-35·9) for males in 2023. Lastly, our study found that all-cause 70q0 decreased across each GBD super-region and region from 2000 to 2023, although with large variability between them. For females, we found that 70q0 notably increased from drug use disorders and conflict and terrorism. Leading causes that increased 70q0 for males also included drug use disorders, as well as diabetes. In sub-Saharan Africa, there was an increase in 70q0 for many non-communicable diseases (NCDs). Additionally, the mean age at death from NCDs was lower than the expected mean age at death for this super-region. By comparison, there was an increase in 70q0 for drug use disorders in the high-income super-region, which also had an observed mean age at death lower than the expected value. INTERPRETATION: We examined global mortality patterns over the past three decades, highlighting-with enhanced estimation methods-the impacts of major events such as the COVID-19 pandemic, in addition to broader trends such as increasing NCDs in low-income regions that reflect ongoing shifts in the global epidemiological transition. This study also delves into premature mortality patterns, exploring the interplay between age and causes of death and deepening our understanding of where targeted resources could be applied to further reduce preventable sources of mortality. We provide essential insights into global and regional health disparities, identifying locations in need of targeted interventions to address both communicable and non-communicable diseases. There is an ever-present need for strengthened health-care systems that are resilient to future pandemics and the shifting burden of disease, particularly among ageing populations in regions with high mortality rates. Robust estimates of causes of death are increasingly essential to inform health priorities and guide efforts toward achieving global health equity. The need for global collaboration to reduce preventable mortality is more important than ever, as shifting burdens of disease are affecting all nations, albeit at different paces and scales. FUNDING: Gates Foundation.

Consensus Paper: Neuroimmune Mechanisms of Cerebellar Ataxias
Hiroshi Mitoma, Keya Adhikari, Daniel Aeschlimann, Partha Chattopadhyay +4 more
2015· The Cerebellum177doi:10.1007/s12311-015-0664-x

In the last few years, a lot of publications suggested that disabling cerebellar ataxias may develop through immune-mediated mechanisms. In this consensus paper, we discuss the clinical features of the main described immune-mediated cerebellar ataxias and address their presumed pathogenesis. Immune-mediated cerebellar ataxias include cerebellar ataxia associated with anti-GAD antibodies, the cerebellar type of Hashimoto's encephalopathy, primary autoimmune cerebellar ataxia, gluten ataxia, Miller Fisher syndrome, ataxia associated with systemic lupus erythematosus, and paraneoplastic cerebellar degeneration. Humoral mechanisms, cell-mediated immunity, inflammation, and vascular injuries contribute to the cerebellar deficits in immune-mediated cerebellar ataxias.

Interobserver Reproducibility of Histopathologic Prognostic Variables in Primary Cutaneous Melanomas
Richard A. Scolyer, Helen M. Shaw, John F. Thompson, Ling-Xi L. Li +4 more
2003· The American Journal of Surgical Pathology171doi:10.1097/00000478-200312000-00011

BACKGROUND: The prognosis for patients with localized primary cutaneous melanoma is known to depend principally on tumor thickness, and to a lesser extent on ulcerative state and Clark level. We have recently found in an analysis of 3661 patients that tumor mitotic rate (TMR) is also an important prognostic parameter, ranking second only to tumor thickness. However, few studies have assessed the accuracy and reproducibility with which these features of a melanoma are recorded by histopathologists. AIM: To assess interobserver reproducibility of major pathologic prognostic parameters in cutaneous melanoma. METHODS: Single hematoxylin and eosin-stained slides of 69 dermally invasive primary cutaneous melanomas were circulated among six pathologists with differing experience in the assessment of melanocytic tumors. The observers independently determined the tumor thickness, Clark level of invasion, ulcerative state, and TMR for each lesion. Intraclass correlation coefficients and kappa scores for multiple ratings per subject were calculated. RESULTS: The intraclass correlation coefficients were 0.96 for tumor thickness and 0.76 for TMR. The kappa scores were 0.83 for ulcerative state and 0.60 for Clark level. These results indicated excellent agreement among the pathologists for measurements of tumor thickness, ulcerative state, and TMR and fair to good agreement for Clark level. CONCLUSIONS: Appropriately trained and experienced histopathologists can assess prognostically important features of melanomas accurately and reproducibly. Given our recent finding of the significance of TMR in determining prognosis, it is important that this feature be assessed by a standardized method and documented for all primary cutaneous melanomas.

Factors causing stress among students of a Medical College in Kolkata, India
Soma Gupta, Supriyo Choudhury, Manisha Das, Aparna Mondol +1 more
2015· Education for Health114doi:10.4103/1357-6283.161924

BACKGROUND: Medical students feel a significant amount of stress due to a variety of factors. Few studies have explored the relative size of these various stressors to identify which are most important. This study was undertaken to quantify the magnitude of various sources of stress among students of a medical college at Kolkata, West Bengal, and also to assess the reliability of Medical Students' Stressor Questionnaire (MSSQ-40) in this context. METHODS: We evaluated the degree of stress along various dimensions using the MSSQ-40, a scale to measure stress among medical students that has been validated in other countries. Differences in stress and its causal factors were analyzed across demographic subgroups. The reliability of the MSSQ-40 was evaluated using Cronbach's alpha. RESULTS: The overall prevalence of stress was 91.1% and the vast majority of students (94.9%) were stressed due to academic reasons. Academic related stress was found to be higher among students who are not conversant with the local language, experienced a change in medium of teaching from secondary school to medical school, and resided in a hostel. The MSSQ-40 in general, and its academic-related stress domain specifically, were found to be reliable in our setting. DISCUSSION: Early detection and remedying stressors will help to build physical and mental health in medical students. Language training early during the medical course might reduce academic stress among our students. Further studies should relate individuals' stress with their academic performance.

Nature and Dimensions of Systemic Hyperinflammation and its Attenuation by Convalescent Plasma in Severe COVID-19
Purbita Bandopadhyay, Ranit D’Rozario, Abhishake Lahiri, Jafar Sarif +4 more
2021· The Journal of Infectious Diseases98doi:10.1093/infdis/jiab010

BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), causing coronavirus disease 2019 (COVID-19), has led to significant morbidity and mortality. While most suffer from mild symptoms, some patients progress to severe disease with acute respiratory distress syndrome (ARDS) and associated systemic hyperinflammation. METHODS: First, to characterize key cytokines and their dynamics in this hyperinflammatory condition, we assessed abundance and correlative expression of a panel of 48 cytokines in patients progressing to ARDS as compared to patients with mild disease. Then, in an ongoing randomized controlled trial of convalescent plasma therapy (CPT), we analyzed rapid effects of CPT on the systemic cytokine dynamics as a correlate for the level of hypoxia experienced by the patients. RESULTS: We identified an anti-inflammatory role of CPT independent of its neutralizing antibody content. CONCLUSIONS: Neutralizing antibodies, as well as reductions in circulating interleukin-6 and interferon-γ-inducible protein 10, contributed to marked rapid reductions in hypoxia in response to CPT. CLINICAL TRIAL REGISTRY OF INDIA: CTRI/2020/05/025209. http://www.ctri.nic.in/.

Using ChatGPT for writing articles for patients' education for dermatological diseases: A pilot study
Himel Mondal, Shaikat Mondal, Indrashis Podder
2023· Indian Dermatology Online Journal95doi:10.4103/idoj.idoj_72_23

Background: Patients' education is a vital strategy for understanding a disease by patients and proper management of the condition. Physicians and academicians frequently make customized education materials for their patients. An artificial intelligence (AI)-based writer can help them write an article. Chat Generative Pre-Trained Transformer (ChatGPT) is a conversational language model developed by OpenAI (openai.com). The model can generate human-like responses. Objective: We aimed to evaluate the generated text from ChatGPT for its suitability in patients' education. Materials and Methods: -test. Results: = 0.002) than the expected limit of 15%. The text had a "relational" level of accuracy according to the SOLO taxonomy. Conclusion: In its current form, ChatGPT can generate a paragraph of text for patients' educational purposes that can be easily understood. However, the similarity index is high. Hence, doctors should be cautious when using the text generated by ChatGPT and must check for text similarity before using it.

Correlation technique and least square support vector machine combine for frequency domain based ECG beat classification
Saibal Dutta, Amitava Chatterjee, Sugata Munshi
2010· Medical Engineering & Physics95doi:10.1016/j.medengphy.2010.08.007

The present work proposes the development of an automated medical diagnostic tool that can classify ECG beats. This is considered an important problem as accurate, timely detection of cardiac arrhythmia can help to provide proper medical attention to cure/reduce the ailment. The proposed scheme utilizes a cross-correlation based approach where the cross-spectral density information in frequency domain is used to extract suitable features. A least square support vector machine (LS-SVM) classifier is developed utilizing the features so that the ECG beats are classified into three categories: normal beats, PVC beats and other beats. This three-class classification scheme is developed utilizing a small training dataset and tested with an enormous testing dataset to show the generalization capability of the scheme. The scheme, when employed for 40 files in the MIT/BIH arrhythmia database, could produce high classification accuracy in the range 95.51-96.12% and could outperform several competing algorithms.

Enzyme producing insect gut microbes: an unexplored biotechnological aspect
Sandipan Banerjee, Tushar Kanti Maiti, Roy Rn
2021· Critical Reviews in Biotechnology88doi:10.1080/07388551.2021.1942777

To explore the unmapped biotechnologically important microbial platforms for human welfare, the insect gut system is such a promising arena. Insects, the inhabitant of all ecological niches, harbor a healthy diversified microbial population in their versatile gut environment. This deep-rooted symbiotic relationship between insects and gut microbes is the result of several indispensable microbial performances that include: enzyme production, detoxification of plant defense compounds and insecticides, maintenance of life cycle, host fertility, bioremediation, pest biocontrol, production of antimicrobial compounds, and in addition provide vitamins, amino acids, and lactic acids to their hosts. Insects have developed such symbiotic interactions with different microorganisms for nutritional benefits like the digestion of dietary compounds by the production of several key hydrolytic enzymes viz: amylase, cellulase, lignocellulase, protease, lipase, xylanase, pectinase, chitinase, laccase, etc. The nutritional enrichment offered by these microbes to insects may be the key factor in the evolutionary attainment of this group. Around one million insect species are grouped under 31 orders, however, only ten of such groups' have been studied in relation to enzyme-producing gut microbes. Moreover, insect gut symbionts are a potential source of biotechnologically active biomolecules as these microbes go through a course of selection pressures in their host gut environment. As symbiosis has pronounced potential regarding the production of novel compounds, especially enzymes with multidimensional industrial capabilities, so there are ample scopes to explore this treasure box for human welfare. Biological significance as well as industrially compatible capabilities can categorize these insect gut symbionts as an unexplored biotechnological aspect.

Status of birth preparedness and complication readiness in Uttar Dinajpur District, West Bengal
DiptaKanti Mukhopadhyay, Sujishnu Mukhopadhyay, Sharmistha Bhattacharjee, Susmita Nayak +2 more
2013· Indian Journal of Public Health81doi:10.4103/0019-557x.119827

Context: Birth Preparedness and Complication Readiness (BPCR) is crucial in averting maternal morbidity and mortality. Objectives: To find out awareness and practices regarding BPCR among pregnant and recently delivered women in Uttar Dinajpur, West Bengal. Materials and Methods: This is a cross-sectional, community-based, mixed methods study. Two-stage, 40 cluster sampling technique was used to select three pregnant and six recently delivered women separately. Information on socio-demographic variables as well as awareness and practices regarding BPCR were collected through semi-structured interview. In-depth interviews with one respondent per cluster were also conducted. For statistical analysis Z test was used. Results: Around 50% of the respondents planned for first antenatal check-up (ANC) within 12 weeks, four or more ANCs and institutional delivery. Proportion of women aware of at least one key danger sign each of pregnancy, labor, postpartum, and newborn ranged from 12.1% to 37.2%, whereas 58.3% knew at least one key component of essential newborn care. Around two-thirds and one-third of women, respectively, especially those from backward and below poverty line (BPL) families knew about cash incentive and referral transport schemes. Proportions of women with first ANC within 12 weeks, four or more ANCs, institutional delivery, saving money, identifying transport, and blood donor were 50.4%, 33.6%, 46.2%, 40.8%, 27.3%, and 9.6%, respectively. Hindu religion, backward castes, BPL status, and education ≥ 5 years influenced the practices except for two regarding ANC. Overall BPCR index of the study population was 34.5. Conclusion: Preparedness in health system, ensuring competence, and motivation of workers are needed for promoting BPCR among the study population.

Impact of iron deficiency anemia on cell-mediated and humoral immunity in children: A case control study
Kaushik Saha, Debanjan Mukhopadhyay, Shreosee Roy, Gargi Raychaudhuri +3 more
2014· Journal of Natural Science Biology and Medicine76doi:10.4103/0976-9668.127317

OBJECTIVE: The precise role of iron in immune regulation especially in children vulnerable to iron deficiency is not fully known. Hence, this study was conducted to evaluate the effects of iron deficiency anemia (IDA) and its treatment with oral iron supplementation on cell-mediated immunity (CMI) and humoral immunity (HMI) in children. MATERIALS AND METHODS: A total of 40 children (<15 years) with IDA and 40 age-matched healthy children after satisfying the inclusion criteria were enrolled for this case-control study. Flow cytometric evaluation of absolute and relative numbers of cluster of differentiation 4 (CD4) and CD8 (cluster of differentiation 8) lymphocyte subgroups was carried out to assess the CMI and serum Immunoglobulin G (IgG), Immunoglobulin A (IgA), Immunoglobulin M (IgM) were measured to assess the HMI at baseline and 3 months post oral iron supplementation. RESULTS: Significantly lower levels (P < 0.05) of CD4+ T-cells and decreased CD4:CD8 ratios were observed in the iron deficient children. Iron supplementation significantly improved the CD4+ cell counts and CD4:CD8 ratios. However, immunoglobulin levels weren't different between the two groups. CONCLUSIONS: Although IDA did not influence HMI, it significantly impaired CMI, which was improved following iron supplementation for 3 months.

Effect of dexmedetomidine as adjuvant in ropivacaine-induced supraclavicular brachial plexus block: A prospective, double-blinded and randomized controlled study
Anjan Das, Saikat Majumdar, Susanta Halder, Surajit Chattopadhyay +4 more
2014· Saudi Journal of Anaesthesia67doi:10.4103/1658-354x.144082

BACKGROUND AND AIMS: Different additives have been used to prolong brachial plexus block. We evaluated the effect of adding dexmedetomidine to ropivacaine for supraclavicular brachial plexus blockade. The primary endpoints were the onset and duration of sensory and motor block and duration of analgesia. MATERIALS AND METHODS: A total of 84 patients (20-50 years) posted for elective forearm and hand surgery under supraclavicular brachial plexus block were divided into two equal groups (Group R and RD) in a randomized, double-blind fashion. In group RD (n = 42) 30 ml 0.5% ropivacaine +1 ml (100 μg) of dexmedetomidine and group R (n = 42) 30 ml 0.5% ropivacaine +1 ml normal saline were administered in supraclavicular block. Sensory and motor block onset times and block durations, time to first analgesic use, total analgesic need, postoperative visual analog scale (VAS), hemodynamics and side-effects were recorded for each patient. RESULTS: Though with similar demographic profile in both groups, sensory and motor block in group RD (P < 0.05) was earlier than group R. Sensory and motor block duration and time to first analgesic use were significantly longer and the total need for rescue analgesics was lower in group RD (P < 0.05) than group R. Post-operative VAS value at 12 h were significantly lower in group RD (P < 0.05). Intra-operative hemodynamics were significantly lower in group RD (P < 0.05) without any appreciable side-effects. CONCLUSION: It can be concluded that adding dexmedetomidine to supraclavicular brachial plexus block increases the sensory and motor block duration and time to first analgesic use, and decreases total analgesic use with no side-effects.

Effectiveness of preventive measures against COVID-19: A systematic review of In Silico modeling studies in indian context
Soumalya Ray, Arista Lahiri, Sweety Suman Jha, Saikat Bhattacharya +1 more
2020· Indian Journal of Public Health66doi:10.4103/ijph.ijph_464_20

BACKGROUND: In the absence of any approved treatment or vaccine against novel Severe Acute Respiratory Syndrome Coronavirus -2 (SARS-CoV-2) infection, Non-Pharmaceutical Interventions (NPIs) are the cornerstone to prevent the disease, especially in a populous country like India. OBJECTIVES: To understand the effectiveness of NPIs reported in the contemporary literatures describing prediction models for prevention of the ongoing pandemic of SARS-CoV-2 specifically in Indian population. METHODS: Original research articles in English obtained through keyword search in PubMed, WHO Global Database for COVID19, and pre-print servers were included in the review. Thematic synthesis of extracted data from articles were done. RESULTS: Twenty-four articles were found eligible for the review - four published articles and twenty pre-print articles. Compartmental model was found to be the most commonly used mathematical model; along with exponential, time varying, neural network and cluster kinetic models. Social distancing, specifically lockdown, was the most commonly modelled intervention strategy. Additionally, contact tracing using smartphone application, international travel restriction, increasing hospital/ICU beds, changes in testing strategy were also dealt with. Social distancing along with increasing testing seemed to be effective in delaying the peak of the epidemic and reducing the peak prevalence. CONCLUSION: Although there is mathematical rationality behind implementation of social distancing measures including lockdown, this study also emphasised the importance of other associated measures like increasing tests and increasing the number of hospital and ICU beds. The later components are particularly important during the social mixing period to be observed after lifting of lockdown.

Disparities in Vocational Rehabilitation Services and Outcomes for Hispanic Clients With Traumatic Brain Injury
Elizabeth da Silva Cardoso, Maria G. Romero, Fong Chan, Alo Dutta +1 more
2007· Journal of Head Trauma Rehabilitation58doi:10.1097/01.htr.0000265096.44683.6b

OBJECTIVE: Examine disparities in vocational rehabilitation (VR) services for Hispanic clients with traumatic brain injury. DESIGN: Logistic regression analysis of secondary data. PARTICIPANTS: Five thousand eight hundred thirty-one European American and Hispanic clients. MAIN OUTCOME MEASURES: Type of services and employment status. RESULTS: European Americans were 1.27 times more likely to obtain employment than were Hispanics. Hispanics with work disincentives had lower odds of returning to work and had more unmet basic needs (eg, food, shelter, and transportation) that need to be addressed in the rehabilitation process. Job placement and on-the-job support services were found to significantly improve employment outcomes. However, on-the-job support services were more likely to be provided to European Americans than to Hispanics.

Clinical and immunological benefits of convalescent plasma therapy in severe COVID-19: insights from a single center open label randomised control trial
Yogiraj Ray, Shekhar Ranjan Paul, Purbita Bandopadhyay, Ranit D’Rozario +4 more
2020· medRxiv58doi:10.1101/2020.11.25.20237883

Abstract Introduction A single center open label phase II randomised control trial was done to assess the pathogen and host-intrinsic factors influencing clinical and immunological benefits of passive immunization using convalescent plasma therapy (CPT), in addition to standard of care (SOC) therapy in severe COVID-19 patients, as compared to patients only on SOC therapy. Methods Convalescent plasma was collected from patients recovered from COVID-19 following a screening protocol which also included measuring plasma anti SARS-CoV2 spike IgG content. Retrospectively, neutralizing antibody content was measured and proteome was characterized by LC-MS/MS for all convalescent plasma units that were transfused to patients. Severe COVID-19 patients with evidence for acute respiratory distress syndrome (ARDS) with PaO2/FiO2 ratio 100-300 (moderate ARDS) were recruited and randomised into two parallel arms of SOC and CPT, N=40 in each arm. Peripheral blood samples were collected on the day of enrolment (T1) followed by day3/4 (T2) and day 7 (T3). RT-PCR and sequencing was done for SARS-CoV2 RNA isolated from nasopharyngeal swabs collected at T1. A panel of cytokines and neutralizing antibody content were measured in plasma at all three timepoints. Patients were followed up for 30 days post-admission to assess the primary outcomes of all cause mortality and immunological correlates for clinical benefits. Results While across all age-groups no statistically significant clinical benefit was registered for patients in the CPT arm, significant immediate mitigation of hypoxia, reduction in hospital stay as well as survival benefit was recorded in severe COVID-19 patients with ARDS aged less than 67 years receiving convalescent plasma therapy. In addition to its neutralizing antibody content a prominent effect of convalescent plasma on attenuation of systemic cytokine levels possibly contributed to its benefits. Conclusion Precise targeting of severe COVID-19 patients is necessary for reaping the clinical benefits of convalescent plasma therapy. Clinical trial registration Clinical Trial Registry of India No. CTRI/2020/05/025209

Depression among nursing students in an Indian government college
Supantha Chatterjee, Indranil Saha, Sujishnu Mukhopadhyay, Raghunath Misra +2 more
2014· British Journal of Nursing55doi:10.12968/bjon.2014.23.6.316

BACKGROUND: Depression is a major public health threat that can affect anyone including health professionals and nursing students. OBJECTIVES AND METHODS: This analytical, cross-sectional study was conducted among 180 students of a nursing college to find out the burden of depression on them and possible contributing factors using the Beck Depression Inventory. RESULTS: 63.9% of the students were found to be depressed, the majority being mild in grade. First-year students were found to be significantly more affected (P=0.008). Binary logistic regression showed that familial disharmony, disinterest in the course and insecurity about future placement were statistically significant factors behind the development of depression. CONCLUSION: It is imperative that the psychological condition of nursing students be viewed as an important aspect to be considered, particularly within the Indian population and others in which there is a paucity of data.

Evaluation of Magnesium as an adjuvant in Ropivacaine-induced supraclavicular brachial plexus block: A prospective, double-blinded randomized controlled study
Anjan Kumar Das, Soumyadip Dutta, Parthajit Mandal, Kasturi Mukherjee +2 more
2014· Journal of Research in Pharmacy Practice53doi:10.4103/2279-042x.145387

OBJECTIVE: Different additives have been used to prolong brachial plexus block. We evaluated the effect of adding magnesium sulfate to ropivacaine for supraclavicular brachial plexus blockade. The primary endpoints were the onset and duration of sensory and motor block and duration of analgesia. METHODS: One hundred patients (25-55 years) posted for elective forearm and hand surgeries under supraclavicular brachial plexus block were divided into two equal groups (Groups RM and RN) in a randomized, double-blind fashion. In group RM (n = 50), 30 ml 0.5% ropivacaine plus 150 mg (in 1 ml 0.9% saline) magnesium sulfate and in group RN (n = 50), 30 ml 0.5% ropivacaine plus 1 ml normal saline were administered in supraclavicular block. Sensory and motor block onset times and block durations, time to first analgesic use, total analgesic need, postoperative visual analog scale (VAS), hemodynamic variables, and side effects were recorded for each patient. FINDINGS: Though with similar demographic profile and block (sensory and motor) onset time, the sensory and motor block duration and time to first analgesic use were significantly longer and the total need for rescue analgesics was lower in group RM (P = 0.026) than group RN. Postoperative VAS values at 24 h were significantly lower in group RM (P = 0.045). Intraoperative hemodynamics was comparable among two groups and no appreciable side effect was noted throughout the study period. CONCLUSION: It can be concluded from this study that adding magnesium sulfate to supraclavicular brachial plexus block may increase the sensory and motor block duration and time to first analgesic use, and decrease total analgesic needs, with no side effects.

Comparative analysis of perceived stress in dermatologists and other physicians during national lock‐down and <scp>COVID</scp> ‐19 pandemic with exploration of possible risk factors: A web‐based cross‐sectional study from Eastern India
Indrashis Podder, Komal Agarwal, Datta Subhendu
2020· Dermatologic Therapy53doi:10.1111/dth.13788

Since the declaration of coronavirus disease 2019 (COVID-19) as global pandemic, several countries including India have enforced a national lock-down. We aimed to compare the perceived stress of dermatologists and nondermatologists, due to lock-down and COVID-19 pandemic and analyze the role of possible risk factors. We conducted a web-based cross-sectional study to determine the perceived stress of doctors using the Perceived Stress Scale-10 and evaluate possible risk factors. Among 384 valid responders, we had 37.5% dermatologists and 62.5% nondermatologists. Perceived stress was more in nondermatologists compared to dermatologists, but not statistically significant (P = 0.1). Degree of stress was also comparable (P = 0.5). Higher stress was significantly associated with females and unmarried individuals in both groups. Risk of infecting self or colleagues or family members and lack of protective gear at work place were top causes of stress. Perceived stress is increased in all doctors due to COVID-19 pandemic and lock-down. Even dermatologists have developed high stress due to current situation, comparable to nondermatologists, despite being traditionally considered an outpatient speciality with minimum stress. Thus, proper mental health care policies should be adopted for all doctors, including dermatologists.