18 results on '"Sabrina S. Ahmed"'
Search Results
2. 234 Sleep quality during the coronavirus pandemic in a Brazilian family-based cohort
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Malcolm von Schantz, Sabrina S. Ahmed, Francieli S. Ruiz, Felipe Beijamini, Kristen L. Knutson, Alexandre C. Pereira, and Tamara Taporoski
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Sleep quality ,Coronavirus disease 2019 (COVID-19) ,business.industry ,XIV. Population and Demographics ,AcademicSubjects/SCI01870 ,Pittsburgh Sleep Quality Index ,Stratified analysis ,A. Basic and Translational Sleep and Circadian Science ,Physiology (medical) ,Subjective sleep ,Cohort ,Pandemic ,Medicine ,Neurology (clinical) ,AcademicSubjects/MED00385 ,business ,Family based ,Demography ,AcademicSubjects/MED00370 - Abstract
Introduction Early in the COVID-19 pandemic, Brazil adopted measures to minimize the spread of the virus, including quarantine orders where people only left home for essential business. This practice could negatively impact sleep by reducing exposure to daylight and physical activity. We examined subjective sleep quality in Baependi, a small rural town in Brazil during the COVID-19 quarantine order. Methods This sample is from the Baependi Heart Study, a family-based cohort of adults. Participants (n=800, 71% women, mean age 51.6±15.6 years) completed the Pittsburgh Sleep Quality Index (PSQI) early in the COVID pandemic (April-May, 2020). They were also asked about their compliance to the quarantine order (yes/no). We compared sleep between quarantined (QT) and not-quarantined individuals (NQT). Longitudinal data was obtained from a subsample of 417 individuals who also completed a pre-COVID PSQI between January, 2010 and September, 2014. Results Individuals compliant with the quarantine had worse sleep quality than non-quarantined individuals [QT PSQI= 6.1 (±3.9), NQT PSQI= 5.0 (±3.5), p Conclusion Individuals who quarantined during COVID-19 had worse sleep quality than individuals who did not quarantine. Longitudinal comparison demonstrated that participants who quarantined had worse sleep quality during COVID compared to before to the pandemic. Support (if any) NIH 1R01HL141881
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- 2021
3. P032 Data from the brazilian baependi heart study cohort yield new insights into the genetic epidemiology of insomnia
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Luz Marina Gomez Gomez, Felipe Beijamini, Sabrina S. Ahmed, Tâmara P. Taporoski, Annette Sterr, André B. Negrão, Alexandre C. Pereira, Malcolm von Schantz, Francieli S. Ruiz, Kristen L. Knutson, and Andrea R. V. R. Horimoto
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education.field_of_study ,business.industry ,Population ,Genome-wide association study ,Regression analysis ,Heritability ,Genetic epidemiology ,Cohort ,Insomnia ,medicine ,medicine.symptom ,education ,business ,Demography ,Genetic association - Abstract
Introduction Insomnia significantly impacts lifetime morbidity and thus has substantial socioeconomic costs. In developed, high-income countries insomnia prevalence is increasing. However, little is known about insomnia in less urbanised, lower-income populations. Baependi is a Brazilian rural town, which has been shown to maintain sleep cycles synchronised to natural daylight, in spite of electrification. We aimed to investigate the components of insomnia in the family-based Baependi Heart Study cohort, using the Insomnia Severity Index (ISI) questionnaire. Methods and materials Descriptive analysis was performed on data collected from the Baependi population (n=1,202) using R software. Heritability analysis was calculated using polygenic mixed modelling. Genome-wide association analysis (GWAS) was subsequently performed on the Baependi data, in order to interrogate for associations with polymorphisms previously related with insomnia symptoms (n= 811). Results Descriptive regression analysis categorised 7.6% of the participants as suffering from ‘clinical insomnia’ based on their ISI scores, with an average total score of 6.5±5.0 (SD). Heritability of ISI score, based on the best-fit model adjusted for sex, age, education, and depression, was 19%. GWAS yielded four associations of genome-wide significance with single-nucleotide polymorphisms (SNP) rs869481, rs62037617 and rs3747579, which are located in the CORO7 gene, and rs3789038, located on the neighbouring HMOX2 gene on chromosome 16. Conclusion This is one of the first studies of ISI score distribution in a general population. The heritability value observed is consistent with previously published literature, which have used different measures of insomnia symptoms. In addition, this is the first reported GWAS analysis for ISI score, identifying the first significant genome-wide genetic associations of ISI score. Thus, this study confirms the reliability and suitability of ISI as a measure for genetic studies in population. Acknowledgements This study was supported by the Santander Universities Researcher Mobility Award and CNPq (PVE 400791/2014-5).
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- 2019
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4. Genetic epidemiology of insomnia in the Baependi heart cohort study
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Felipe Beijamini, Luz Marina Gomez Gomez, Kristen L. Knutson, André B. Negrão, Alexandre C. Pereira, Annette Sterr, M. von Schantz, Tâmara P. Taporoski, Sabrina S. Ahmed, Andrea R. V. R. Horimoto, and Francieli S. Ruiz
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Pediatrics ,medicine.medical_specialty ,Genetic epidemiology ,business.industry ,Insomnia ,Medicine ,General Medicine ,medicine.symptom ,business ,Cohort study - Published
- 2019
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5. Maternal misperception of under-five children weight status and associated factors: A cross-sectional study.
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Sarker T, Ahmed S, Rahman S, and Chakraborty B
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- Humans, Cross-Sectional Studies, Female, Bangladesh, Child, Preschool, Adult, Infant, Male, Body Weight, Poverty Areas, Young Adult, Feeding Behavior psychology, Urban Population statistics & numerical data, Socioeconomic Factors, Nutritional Status, Mothers psychology, Mothers statistics & numerical data, Health Knowledge, Attitudes, Practice
- Abstract
Maternal perceptions, about the nutritional status of their children, may have implications for timely health care seeking and feeding behaviour. Shreds of evidence are limited in this area that assessed maternal perception about the nutritional status of the children in the context of Bangladesh. The objective of this study is to assess the differences in mothers' perceptions about their children's nutritional status who are less than 5 years of age and their associated factors in the context of urban slum areas. A cross-sectional study (Quantitative approach) was conducted in two of the largest urban slums of Dhaka city. A total of 437 mother-children dyads were included in the final analysis. The outcome of interest was the mother's 'varied perceptions' regarding the nutritional status of their children under five. 'Varied perception' refers to the difference between a mother's subjective assessment of her child's nutritional condition and the anthropometrically measured nutritional status. The prevalence of mother's varied perceptions was around 46%, and among them, 37% of mothers underestimated and 9% overestimated their child's nutritional status. 'The child doesn't want to eat' (AOR = 3.69; 95% CI: 2.34-5.85; p < 0.001) and 'Feels light when carried' (AOR = 3.39; 95% CI: 1.69-6.81; p = 0.001) were the significant reasons behind the mother's perception about the nutritional status of their under-five children. About one in two mothers' perceptions about their children varied from the anthropometry-derived status. Various research findings indicate that providing health education on proper feeding practices for children, along with anthropometric measurements, can assist mothers in enhancing their understanding and assessing their child's nutritional status with greater accuracy. Further qualitative research may be instrumental in getting deeper insights into maternal perception to develop context-specific interventions., (© 2024 The Author(s). Maternal & Child Nutrition published by John Wiley & Sons Ltd.)
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- 2024
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6. Optic Perineuritis as the Initial Presentation of Syphilis in a Patient on Biologics.
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Remtulla R, Gill S, Ahmed S, and Israelian G
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- Humans, Vision Disorders, Syphilis complications, Syphilis diagnosis, Syphilis drug therapy, Biological Products therapeutic use
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- 2023
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7. Medication adherence and health-related quality of life among people with diabetes in Bangladesh: A cross-sectional study.
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Ahmed S, Saif-Ur-Rahman KM, Dhungana RR, Ganbaatar G, Ashraf F, Yano Y, Miura K, and Ahmed MSAM
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- Humans, Middle Aged, Aged, Cross-Sectional Studies, Bangladesh epidemiology, Pain, Quality of Life, Diabetes Mellitus drug therapy
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Introduction: Good adherence to anti-diabetic medications is an important protective factor for decreasing diabetes-related complications and disabilities but its association with health-related quality of life (HRQoL) is understudied. The current study aimed to assess an association between medication adherence to anti-diabetic drugs and HRQoL among people with diabetes in Dhaka city, Bangladesh., Methods: We conducted a cross-sectional study among 480 people with diabetes aged between 50 and 70 years, who attended a tertiary-level hospital in Dhaka city. We used the EuroQol-5 Dimensions Questionnaire (EQ-5D-5L) to measure HRQoL and Morisky Medication Adherence Scale to assess the level of medication adherence to anti-diabetic drugs. Multivariable logistic regression was performed to assess the significance of relevant factors., Results: The mean age of the participants was 59.0 (standard deviation [SD], 7.0) years. The majority of the participants (74%) had a lower level of medication adherence. The mean value of (EQ-5D-5L) was 2.0 (SD, 1.0). The percentage of severe disability in different domains were 6.7% for mobility, 3.5% for self-care, 11.9% for usual daily activities, 11.9% for pain/discomfort and 11.3% for anxiety. After adjusting for age, sex, years of education, household expenditure, hypertension, duration of diabetes, glycemic status and multi-morbidities; low adherence to anti-diabetic medication was inversely associated with pain (OR, 0.26; 95% CI, 0.08-0.80; p = .036), and positively associated with anxiety (OR, 7.18; 95% CI, 1.03-9.59; p = .043)., Conclusions: Low medication adherence to anti-diabetic drugs was associated with anxiety and pain among the EQ-5D-5L indexes measured in people with diabetes in Dhaka, Bangladesh., (© 2023 The Authors. Endocrinology, Diabetes & Metabolism published by John Wiley & Sons Ltd.)
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- 2023
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8. The pattern of physical disability and determinants of activities of daily living among people with diabetes in Bangladesh.
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Ahmed S, Faruque M, Moniruzzaman M, Roby NU, Ashraf F, Yano Y, Miura K, and Ahmed MSAM
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- Activities of Daily Living, Aged, Bangladesh epidemiology, Cross-Sectional Studies, Humans, Middle Aged, Diabetes Mellitus epidemiology, Persons with Disabilities
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Introduction: Diabetes mellitus itself is a known predictor of physical disability and impairment in activities of daily living (ADL); however, there are existing controversies about the factors explaining the association between diabetes and disability. Therefore, we assessed the possible determinants associated with ADL impairment among people with diabetes in Dhaka city, Bangladesh., Methods: We conducted a cross-sectional study among 480 people with diabetes aged between 50 and 70 years, and attended a tertiary level hospital in Dhaka city. For determining the ADL impairment, we used the Katz Index Scoring (6 = no impairment; <6 = impairment). Age, sex, educational attainment, household expenditure, body mass index, the status of diabetes (controlled or uncontrolled), hypertension and medication adherence to anti-diabetic drugs were included in the statistical models, and we defined any ADL impairment (Katz score <6) as an event. Multivariable logistic regression was performed to assess the significance of relevant factors., Results: The mean age of the participants was 59.0 (standard deviation [SD], 7.0) years. The majority of the participants (76.3%) had at least some sort of physical disability. In multivariable logistic regression analysis after adjusting for all covariates simultaneously, age (odds ratio [95% confidence interval]: 1.35 [1.20 to 1.75] per 1-SD increment), BMI (1.32 [1.08 to 1.21] per 1-SD increment), higher educational attainment (0.34 [0.09-0.90]), multi-morbidity (2.79 [1.48-5.25]) and uncontrolled diabetes (1.35 [1.10-1.45]) were independently associated with ADL impairment., Conclusions: Physical disability was common, and ADL impairment was associated with age, educational attainment, BMI, multi-morbidities and uncontrolled diabetes among the people with diabetes in Bangladesh., (© 2022 The Authors. Endocrinology, Diabetes & Metabolism published by John Wiley & Sons Ltd.)
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- 2022
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9. Response to Isolated Diastolic Hypertension and Risk of Cardiovascular Disease: Controversies in Hypertension - Con Side of the Argument.
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Yano Y, Chang Kim H, Lee H, Azahar N, Ahmed S, Kitaoka K, Kaneko H, Kawai F, Mizuno A, and Viera AJ
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- Blood Pressure physiology, Humans, Medical History Taking, Cardiovascular Diseases epidemiology, Cardiovascular Diseases etiology, Hypertension complications, Hypertension epidemiology
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- 2022
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10. Isolated Diastolic Hypertension and Risk of Cardiovascular Disease: Controversies in Hypertension - Pro Side of the Argument.
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Yano Y, Kim HC, Lee H, Azahar N, Ahmed S, Kitaoka K, Kaneko H, Kawai F, Mizuno A, and Viera AJ
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- Adult, Blood Pressure, Humans, Risk Factors, Systole, Cardiovascular Diseases complications, Cardiovascular Diseases etiology, Hypertension complications, Hypertension drug therapy, Hypertension epidemiology
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Isolated diastolic hypertension (IDH), defined as diastolic blood pressure in the hypertensive range but systolic blood pressure not in the hypertensive range, is not uncommon (<20%) among adults with hypertension. IDH often manifests in concurrence with other cardiovascular risk factors. Individuals with IDH tend to have lower awareness of their hypertension compared with those with both systolic and diastolic hypertension. IDH appears to be a largely underrated risk factor for cardiovascular disease events, which may be explained by inconsistent association of IDH with cardiovascular disease events. The inconsistency suggests that IDH is heterogeneous. One size does not seem to fit all in the clinical management of individuals with IDH. Rather than treating IDH as a monolithic low-risk condition, detailed phenotyping in the context of individual comprehensive cardiovascular risk would seem to be most useful to assess an individual's expected net benefit from therapy. In this review, we highlight that the clinical relevance of IDH differs by individual clinical characteristics, and elucidate groups of individuals with IDH that should be wary of cardiovascular disease risks.
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- 2022
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11. Premature Atrial Contractions and Their Determinants in a General Population of Japanese Men.
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Ahmed S, Hisamatsu T, Kadota A, Fujiyoshi A, Segawa H, Torii S, Takashima N, Kondo K, Nakagawa Y, Ueshima H, and Miura K
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- Cholesterol, Cross-Sectional Studies, Humans, Japan epidemiology, Male, Risk Factors, Triglycerides, Atrial Fibrillation, Atrial Premature Complexes epidemiology
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Background: Premature atrial contractions (PACs) are predictors of atrial fibrillation, stroke, and cardiovascular mortality. The present study aimed to assess relevant factors for PACs among a general population of Japanese men., Methods and results: This study conducted a population-based, cross-sectional study among 517 men, aged 40-79 years, with neither apparent myocardial infarction nor atrial fibrillation. 24-h Holter electrocardiography to assess PAC frequency was used. Age, body mass index, height, low-density lipoprotein cholesterol, triglycerides, high-density lipoprotein cholesterol, mean heart rate, diabetes mellitus, hypertension, physical activity, smoking, alcohol consumption, and lipid-lowering therapy were included in multivariable negative binomial regression analyses to assess correlation for the number of PACs per hour. Almost all participants (99%) had at least 1 PAC in 1 h (median number 2.84 PACs per h). In multivariable negative binomial regression after adjusting for all covariates simultaneously, age (relative risk [95% confidence interval], 1.30 [1.08-1.57] per 1-standard deviation [SD] increment), height (1.19 [1.02-1.39] per 1-SD increment), triglycerides (0.79 [0.65-0.97] per 1-SD increment), mean heart rate (0.69 [0.59-0.80] per 1-SD increment), physical activity (0.63 [0.43-0.93]), current smoking (1.69 [1.06-2.69]), current moderate (1.97 [1.23-3.16]) and heavy (1.84 [1.12-3.01]) alcohol consumption were independently associated with PAC frequency., Conclusions: PAC frequency was independently associated with age, height, smoking, alcohol consumption, heart rate, physical activity, and triglycerides.
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- 2022
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12. Ventricular Premature Complexes and Their Associated Factors in a General Population of Japanese Men.
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Ahmed S, Hisamatsu T, Kadota A, Fujiyoshi A, Segawa H, Torii S, Takashima N, Kondo K, Nakagawa Y, Ueshima H, and Miura K
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- Cholesterol, Cross-Sectional Studies, Humans, Japan epidemiology, Lipids, Male, Hypertension epidemiology, Ventricular Premature Complexes epidemiology
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Increased ventricular premature complexes (VPCs) are associated with a higher risk of cardiac morbidities. However, little information is available on the risk factors of Western general populations. Therefore, we aimed to assess the frequency and associated factors of VPCs in healthy general Japanese men. We conducted a population-based cross-sectional study in 517 men, aged 40 to 79 years, using 24-hour Holter electrocardiography. Age, body mass index, height, low-density lipoprotein cholesterol, triglycerides, high-density lipoprotein cholesterol, resting heart rate, diabetes mellitus, hypertension, physical activity, smoking, alcohol consumption, lipid-lowering therapy were included in multivariable negative binomial regression to assess independent correlates for the number of VPCs per hour. We observed at least 1 VPC in 1 hour in 429 men (83%). In multivariable negative binomial regression adjusted for all covariates simultaneously, age (risk ratio [95% confidence interval] 1.91 [1.56 to 2.33] per 1-SD increment), height (1.17 [1.04 to 1.49] per 1-SD increment), resting heart rate(1.34 [1.02 to 1.77] per 1-SD increment), diabetes mellitus (2.36 [1.17 to 4.76] ), hypertension (1.90 [1.03 to 3.50]), physical activity (0.67 [0.47 to 0.97] ), current smoking (4.23 [1.86 to 9.60] ), past smoking (2.08 [1.03 to 4.19] ), current light alcohol consumption (0.16 [0.04 to 0.64] ), and lipid-lowering therapy (0.47 [0.23 to 0.96] ) were independently associated with VPCs frequency. In conclusion, VPCs frequency was independently associated with age, height, resting heart rate, diabetes mellitus, hypertension, physical activity, smoking, alcohol consumption, and lipid-lowering therapy., Competing Interests: Disclosures The authors have no conflicts of interest to declare., (Copyright © 2021 Elsevier Inc. All rights reserved.)
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- 2022
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13. A systematic review of waterborne and water-related disease in animal populations of Florida from 1999-2019.
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Jenkins M, Ahmed S, and Barnes AN
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- Animals, Florida epidemiology, Humans, Water Microbiology, Fishes microbiology, Animal Diseases epidemiology, Animal Diseases microbiology, Birds microbiology, Waterborne Diseases epidemiology, Waterborne Diseases microbiology
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Background: Florida's waters are a reservoir for a host of pathogens and toxins. Many of these microorganisms cause water-related diseases in people that are reportable to the Florida Department of Health. Our objective in this review was to ascertain which water-related pathogens and toxins of public health importance have been found in animal populations in Florida over the last twenty years., Methods: Nineteen databases were searched, including PubMed and Web of Science Core Collection, using keywords and search terms for the waterborne diseases, water-related vector-borne diseases, and water-based toxins reportable to the Florida Department of Health. For inclusion, peer-reviewed journal articles were to be written in English, published between January 1, 1999 and December 31, 2019, and contain primary research findings documenting at least one of the water-related pathogens or toxins of interest in an animal population within Florida during this same time frame., Results: Of over eight thousand initial search results, 65 studies were included for final analysis. The most common animal types implicated in the diseases of interest included marine mammals, fish and shellfish, wild birds, and livestock. Toxins or pathogens most often associated with these animals included toxin-producer Karenia brevis, vibriosis, Escherichia coli, and Salmonellosis., Discussion/conclusion: Findings from this review elucidate the water-related disease-causing pathogens and toxins which have been reported within animal populations in recent Florida history. As most of these diseases are zoonotic, our results suggest a One Health approach is necessary to support and maintain healthy water systems throughout the state of Florida for the protection of both human and animal populations., Competing Interests: The authors have declared that no competing interests exist.
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- 2021
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14. Feasibility of a Lifestyle Intervention Program for Prevention of Diabetes Among Women With Prior Gestational Diabetes Mellitus (LIVING Study) in South Asia: A Formative Research Study.
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Tewari A, Praveen D, Madhira P, Josyula LK, Joshi R, Kokku SB, Garg V, Rawal I, Chopra K, Chakma N, Ahmed S, Pathmeswaran A, Godamunne P, Lata AS, Sahay R, Patel T, Gupta Y, Tandon N, Naheed A, Patel A, and Kapoor D
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Aim: To refine and contextually adapt a postpartum lifestyle intervention for prevention of type 2 diabetes mellitus (T2DM) in women with prior gestational diabetes mellitus (GDM) in Bangladesh, India, and Sri Lanka. Materials and Methods: In-depth interviews (IDIs) and focus group discussions (FGDs) were conducted with women with current diagnosis of GDM, and health care professionals involved in their management, to understand relevant local contextual factors for intervention optimization and implementation. This paper describes facilitators and barriers as well as feedback from participants on how to improve the proposed intervention. These factors were grouped and interpreted along the axes of the three main determinants of behavior-capability, opportunity, and motivation. IDIs and FGDs were digitally recorded, transcribed, and translated. Data-driven inductive thematic analysis was undertaken to identify and analyze patterns and themes. Results: Two interrelated themes emerged from the IDIs and FGDs: (i) The lifestyle intervention was acceptable and considered to have the potential to improve the existing model of care for women with GDM; and (ii) Certain barriers such as reduced priority of self-care, and adverse societal influences postpartum need to be addressed for the improvement of GDM care. Based on the feedback, the intervention was optimized by including messages for family members in the content of the intervention, providing options for both text and voice messages as reminders, and finalizing the format of the intervention session delivery. Conclusion: This study highlights the importance of contextual factors in influencing postpartum care and support for women diagnosed with GDM in three South Asian countries. It indicates that although provision of postpartum care is complex, a group lifestyle intervention program is highly acceptable to women with GDM, as well as to health care professionals, at urban hospitals., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2020 Tewari, Praveen, Madhira, Josyula, Joshi, Kokku, Garg, Rawal, Chopra, Chakma, Ahmed, Pathmeswaran, Godamunne, Lata, Sahay, Patel, Gupta, Tandon, Naheed, Patel and Kapoor.)
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- 2020
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15. Genetic variance contributes to ingestive processes: a survey of 2-deoxy-D-glucose-induced feeding in eleven inbred mouse strains.
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Lewis SR, Ahmed S, Khaimova E, Israel Y, Singh A, Kandov Y, Kest B, and Bodnar RJ
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- Animals, Dose-Response Relationship, Drug, Eating drug effects, Genetic Variation, Genotype, Glucose deficiency, Mice, Mice, Inbred Strains, Antimetabolites pharmacology, Deoxyglucose pharmacology, Eating genetics
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The feeding response following administration of the anti-metabolic glucose analogue, 2-deoxy-d-glucose (2DG), is conceptualized as an experimental model of glucoprivation, which may contribute to the understanding of inter-individual differences in glucose and carbohydrate intake and, ultimately, obesity. Although variation in the intake of several nutrients as well as food and water are known to be associated with genetic variation, it is not known whether 2DG-induced feeding is similarly genotype dependent. The present study therefore examined 2DG-induced feeding in mice of 11 inbred (A/J, AKR/J, BALB/cJ, CBA/J, C3H/HeJ, C57BL6/J, C57BL10/J, DBA/2J, SJL/J, SWR/J, 129P3/J) and one outbred (CD-1) strains across a wide range of previously determined effective 2-DG doses (200, 400, 600, 800 mg/kg) and test times (1-4 h). Orderly dose-dependent increases in 2DG-induced feeding occurred after all four doses in outbred CD-1 and inbred DBA/2J mice, across the three highest doses for BALB/cJ, SJL/J and 129P3/J mice, and across the two highest doses for CBA/J and AKR/J mice. Limited instances of 2DG-induced feeding were noted only at the highest dose in A/J and C3H/HeJ mice, or at a moderate dose in C57BL/6J mice. Further, the full 2DG dose range failed to alter food intake in C57BL/10J mice, and produced significant reductions in food intake in SWR/J mice. Food intake after 2DG doses of 200-600 mg/kg, but not 800 mg/kg, displayed significant cross-correlation, suggesting that large 2DG doses may recruit non-specific effects upon food intake. There was no correlation between food intake in the absence (vehicle baseline) of and presence of 2DG, suggesting that the regulation of glucose intake in non-challenged mice does not predict subsequent responses to glucoprivic challenge. The data demonstrate genotype-dependent variability in this glucoprivic response, and may provide the basis for the subsequent identification of trait-relevant genes.
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- 2006
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16. Inbred mouse strain survey of sucrose intake.
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Lewis SR, Ahmed S, Dym C, Khaimova E, Kest B, and Bodnar RJ
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- Animals, Eating, Energy Intake, Mice, Inbred Strains, Osmolar Concentration, Solutions, Species Specificity, Water, Behavior, Animal, Drinking Behavior, Mice psychology, Sucrose
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Mouse strain differences for intake of sucrose and saccharin have been reported across studies, and some of these differences have been related to variants of the Tas1r3 taste receptor gene. However, several methodological concerns remain, including use of relatively few strains and/or a limited number of palatable concentrations in previous analyses. The present study examined strain differences in sucrose intake among 11 inbred (A/J, AKR/J, BALB/cJ, CBA/J, C3H/HeJ, C57BL6/J, C57BL10/J, DBA/2J, SJL/J, SWR/J, 129P3/J) and one outbred (CD-1) mouse strains across nine different sucrose concentrations (0.0001-20%) using two-bottle 24-h preference tests which controlled for sucrose concentration presentation effects, sucrose and water bottle positions, and measurement of kilocalorie intake as sucrose or chow. A/J, C57BL/6J, CD-1 and SWR/J strains consumed the greatest (11.6-22 ml) amount of sucrose, whereas the A/J, C57BL/10J, SJL/J and SWR/J strains consumed the greatest (44-56%) percentages of kilocalories as sucrose. The AKR/J, CBA/J, C3H/HeJ and DBA/2J strains consumed the least (6.9-7.9 ml) amount of sucrose, and displayed lower (20-30%) percentages of kilocalories consumed as sucrose. Whereas A/J, C57BL/6J, C57BL/10J, CD-1, SWR/J and SJL/J strains all displayed the most pronounced compensatory decreases in chow intake as the percentage of kilocalories consumed as sucrose increased, the AKR/J, C3H/HeJ and DBA/2J strains failed to significantly alter chow intake even at high sucrose concentrations. There was a paucity of significant correlations in the percentage of sucrose intake between sucrose concentrations, but percentage of sucrose intake at lower concentrations did correlate with previous descriptions of saccharin intake and variants of the Tas1r3 taste receptor gene. These data demonstrate clear mouse strain differences across a range of measures in sucrose intake across a wide range of concentrations, but caution against extrapolating between extremely high and low concentrations. The identification of strains with diverging abilities to regulate kilocalorie intake when presented with high sucrose concentrations may lead to the successful QTL mapping of this trait.
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- 2005
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17. Complications associated with image-guided gastrostomy and gastrojejunostomy tubes in children.
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Friedman JN, Ahmed S, Connolly B, Chait P, and Mahant S
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- Abscess etiology, Adolescent, Child, Child, Preschool, Enteral Nutrition instrumentation, Enteral Nutrition methods, Enteral Nutrition mortality, Fluoroscopy, Gastrointestinal Hemorrhage etiology, Gastrostomy methods, Gastrostomy mortality, Humans, Infant, Infant, Newborn, Intussusception etiology, Jejunostomy methods, Jejunostomy mortality, Medical Audit, Peritonitis etiology, Retrospective Studies, Sepsis etiology, Stomach diagnostic imaging, Enteral Nutrition adverse effects, Gastrostomy adverse effects, Jejunostomy adverse effects
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Objective: To evaluate the complications associated with the image-guided insertion of gastrostomy (G) and gastrojejunostomy (GJ) tubes in children, performed by the retrograde percutaneous route., Methods: A convenience sample of 208 charts of 840 patients recorded as having G and/or GJ tubes placed by the interventional radiology service in a 4-year period (1995-1999) at the Hospital for Sick Children in Toronto, Canada, were selected for review. Complications were categorized as major (including subcutaneous abscess, peritonitis, septicemia, gastrointestinal bleeding, and death) or minor., Results: In total, 253 tubes (208 G tubes, 41 GJ tubes, 4 G and GJ tubes) were placed in the 208 patients reviewed. The median age at the time of insertion was 15 months (range: 7 days-18 years). The most common diagnostic category was neurologic disease (47%). The main indications for tube insertion were recorded as failure to thrive (57%) and risk of aspiration (47%). Major complications were seen in 5% of patients. Peritonitis was noted in 3%, and there was 1 death related to tube insertion (0.4%). Minor complications were found in 73% of patients, including tube dislodgement (37%), tube leakage (25%), and G-tube site skin infection (25%). GJ tubes had a higher rate than G tubes of obstruction, migration, dislodgement, leakage, and intussusception. Site infection, gastroesophageal reflux, and bleeding from the site were seen less frequently in patients with GJ tubes compared with G tubes., Conclusion: G and GJ tubes placed by the image-guided retrograde percutaneous method are associated with a wide range of complications. The majority of these are minor and are predominantly related to tube maintenance, but major complications, including death, do occur.
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- 2004
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18. CYP17 genetic polymorphism, breast cancer, and breast cancer risk factors.
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Ambrosone CB, Moysich KB, Furberg H, Freudenheim JL, Bowman ED, Ahmed S, Graham S, Vena JE, and Shields PG
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- Adult, Aged, Alleles, Breast Neoplasms enzymology, Breast Neoplasms pathology, Female, Gene Frequency, Genotype, Humans, Middle Aged, Polymorphism, Genetic, Postmenopause, Premenopause, Risk Factors, Breast Neoplasms genetics, Steroid 17-alpha-Hydroxylase genetics
- Abstract
Background: Findings from previous studies regarding the association between the CYP17 genotype and breast cancer are inconsistent. We investigated the role of the MspAI genetic polymorphism in the 5' region of CYP17 on risk of breast cancer and as a modifier of reproductive risk factors., Methods: Questionnaire and genotyping data were obtained from a population-based, case-control study of premenopausal (n = 182) and postmenopausal (n = 214) European-American Caucasian women in western New York. Cases and controls were frequency matched by age and by county of residence. Odds ratios and 95% confidence intervals were used to estimate relative risks., Results: The CYP17 genotype was not associated with breast cancer risk; however, controls with the A2/A2 genotype (associated with higher estrogens) had earlier menarche and earlier first full-term pregnancy. Premenopausal women with A1/A1 genotypes, but not with A2 alleles, were at significantly decreased risk with late age at menarche (odds ratio = 0.37, 95% confidence interval = 0.14-0.99), and at increased risk with late age at first full-term pregnancy (odds ratio = 4.30, 95% confidence interval = 1.46-12.67) and with use of oral contraceptives (odds ratio = 3.24, 95% confidence interval = 1.08-9.73). Associations were weaker among postmenopausal women., Conclusion: These results suggest that the effects of factors that may alter breast cancer risk through a hormonal mechanism may be less important among premenopausal women with putative higher lifetime exposures to circulating estrogens related to the CYP17 A2 allele.
- Published
- 2003
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