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Gupta MK, Gouda G, Vadde R. Relation Between Obesity and Type 2 Diabetes: Evolutionary Insights, Perspectives and Controversies. Curr Obes Rep 2024; 13:475-495. [PMID: 38850502 DOI: 10.1007/s13679-024-00572-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/13/2024] [Indexed: 06/10/2024]
Abstract
PURPOSE OF REVIEW Since the mid-twentieth century, obesity and its related comorbidities, notably insulin resistance (IR) and type 2 diabetes (T2D), have surged. Nevertheless, their underlying mechanisms remain elusive. Evolutionary medicine (EM) sheds light on these issues by examining how evolutionary processes shape traits and diseases, offering insights for medical practice. This review summarizes the pathogenesis and genetics of obesity-related IR and T2D. Subsequently, delving into their evolutionary connections. Addressing limitations and proposing future research directions aims to enhance our understanding of these conditions, paving the way for improved treatments and prevention strategies. RECENT FINDINGS Several evolutionary hypotheses have been proposed to unmask the origin of obesity-related IR and T2D, e.g., the "thrifty genotype" hypothesis suggests that certain "thrifty genes" that helped hunter-gatherer populations efficiently store energy as fat during feast-famine cycles are now maladaptive in our modern obesogenic environment. The "drifty genotype" theory suggests that if thrifty genes were advantageous, they would have spread widely, but proposes genetic drift instead. The "behavioral switch" and "carnivore connection" hypotheses propose insulin resistance as an adaptation for a brain-dependent, low-carbohydrate lifestyle. The thrifty phenotype theory suggests various metabolic outcomes shaped by genes and environment during development. However, the majority of these hypotheses lack experimental validation. Understanding why ancestral advantages now predispose us to diseases may aid in drug development and prevention of disease. EM helps us to understand the evolutionary relation between obesity-related IR and T2D. But still gaps and contradictions persist. Further interdisciplinary research is required to elucidate complete mechanisms.
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Affiliation(s)
- Manoj Kumar Gupta
- Department of Biotechnology & Bioinformatics, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India.
| | - Gayatri Gouda
- ICAR-National Rice Research Institute, Cuttack, 753 006, Odisha, India
| | - Ramakrishna Vadde
- Department of Biotechnology & Bioinformatics, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India
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Taylor R. Understanding the cause of type 2 diabetes. Lancet Diabetes Endocrinol 2024; 12:664-673. [PMID: 39038473 DOI: 10.1016/s2213-8587(24)00157-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 07/24/2024]
Abstract
Type 2 diabetes has long been thought to have heterogenous causes, even though epidemiological studies uniformly show a tight relationship with overnutrition. The twin cycle hypothesis postulated that interaction of self-reinforcing cycles of fat accumulation inside the liver and pancreas, driven by modest but chronic positive calorie balance, could explain the development of type 2 diabetes. This hypothesis predicted that substantial weight loss would bring about a return to the non-diabetic state, permitting observation of the pathophysiology determining the transition. These changes were postulated to reflect the basic mechanisms of causation in reverse. A series of studies over the past 15 years has elucidated these underlying mechanisms. Together with other research, the interaction of environmental and genetic factors has been clarified. This knowledge has led to successful implementation of a national programme for remission of type 2 diabetes. This Review discusses the paucity of evidence for heterogeneity in causes of type 2 diabetes and summarises the in vivo pathophysiological changes, which cause this disease of overnutrition. Type 2 diabetes has a homogenous cause expressed in genetically heterogenous individuals.
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Affiliation(s)
- Roy Taylor
- Newcastle Magnetic Resonance Centre, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK; Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK.
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Niclou A, Esparza-Romero J, Urquidez-Romero R, Lam YY, Rood J, Schulz LO, Bennett PH, Valencia ME, Ravussin E. Changes in energy expenditure and physical activity over 15 years of environmental changes: The Maycoba project. Obesity (Silver Spring) 2024; 32:1518-1525. [PMID: 38894515 DOI: 10.1002/oby.24061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/18/2024] [Accepted: 04/23/2024] [Indexed: 06/21/2024]
Abstract
OBJECTIVE This work aimed to parse out the role of changing environments on body composition, total energy expenditure, and physical activity in the Mexican Pima, a population experiencing rapid industrialization. METHODS Using doubly labeled water, we compared energy expenditure and physical activity in a longitudinal cohort of Mexican Pima (n = 26; female: 12) in 1995 and 2010. Body mass and composition were assessed by bioimpedance analysis. To determine the effects of environmental factors on body weight independent of age, we compared the 1995 longitudinal cohort with an age- and sex-matched cross-sectional cohort (n = 26) in 2010. RESULTS Body mass, fat mass, and fat-free mass all significantly increased between 1995 and 2010. Despite a 13% average increase in body weight, weight-adjusted total daily energy expenditure decreased significantly. Measured physical activity levels also decreased between 1995 and 2010, after we adjusted for weight. CONCLUSIONS Our results suggest that the recent industrialization of the Maycoba region in Sonora, Mexico, has contributed to a decrease in physical activity, in turn contributing to weight gain and metabolic disease among the Mexican Pima.
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Affiliation(s)
- Alexandra Niclou
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Julián Esparza-Romero
- Obesity and Diabetes Research Unit, Nutrition Coordination, Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, Mexico
| | - Rene Urquidez-Romero
- Institute of Biomedical Sciences, Department of Health Sciences, University Autonomous of Ciudad Juárez, Ciudad Juárez, Mexico
| | - Yan Y Lam
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Jennifer Rood
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
| | - Leslie O Schulz
- Department of Health Sciences, Northern Arizona University, Flagstaff, Arizona, USA
| | - Peter H Bennett
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, Arizona, USA
| | - Mauro E Valencia
- Centro de Investigación en Alimentación y Desarrollo, A.C., Hermosillo, Mexico
| | - Eric Ravussin
- Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
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Little B, Escobedo J, Pena Reyes ME, Shakib SH, O'Brien L, Kerber R, Velasco X, Lopez MC, Tillquist C. Environment driven changes in type 2 diabetes, overweight and obesity in an isolated Mixe community in the Valley of Oaxaca, southern Mexico. Am J Hum Biol 2024:e24119. [PMID: 39010757 DOI: 10.1002/ajhb.24119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 07/17/2024] Open
Abstract
BACKGROUND This study focused on type 2 diabetes mellitus (T2DM) in a group of adult Mixe, an Indigenous population from Oaxaca, Mexico. Mixe comprised an estimated 9.4% (n ≅ 90 000) of the Indigenous population in Oaxaca. Mexico. OBJECTIVE This study focused on a group of adult Mixe, an Indigenous population from Oaxaca, Mexico. To compare the prevalence of T2DM, overweight (OW), obesity (OB), and hypertension (HTN) between 2007 and 2017 for a small, isolated Mixe community in the Valley of Oaxaca, Mexico. We test whether or not environmental changes have affected T2DM prevalence. METHODS AND MATERIALS Demographic and medical record data were collected in the community in 2007 and 2017 from the medical clinic and the mayor's office. T2DM was medically diagnosed among adults (>34 years old), in 2007 (n = 730) and in 2017 (n = 829). RESULTS T2DM crude prevalence increased from 6.7% to 12.1% (p < .001) from 2007 to 2017. The mean age of the sample analyzed was 60.6 (SD = 9.7). Age-adjusted T2DM prevalence increased from 6.7% to 10.8% (p < .002). T2DM was 5.7%-5.5% among males (p < .53) and 7.1%-13.6% among females (p < .001). Sex-specific OW and OB simulation studies indicate females had 7% less OW in 2007, and males were unchanged compared with 2017. OB among males and females was significantly higher in 2017 compared with 2007 (increased by 15.2% and 8.3%, males and females, respectively). Sexes combined OW + OB increased 12.7% among males but was unchanged in females (-0.5%). In the sexes combined analysis, OW prevalence increased 12.7% to 27.1% (p < .001) and OB prevalence increased 10.7%-27.9% (p < .001) from 2007 to 2017. HTN did not change significantly from 2007 to 2017 (15.4% and 14.6%, respectively) (p = .63) in adults. Among T2DM individuals, the frequency of HTN was not significantly different in 2007 and 2017 (57.1% and 37%, respectively) (p = .65). Transition to a Western diet consisting of high-carbohydrate foods occurred at the same time as increased T2DM from 2007 to 2017, with a higher prevalence of T2DM noted among females in 2017. CONCLUSIONS An increased prevalence of T2DM, OW, and OB but not HTN was observed in the Mixe community from 2007 to 2017 and was associated with the adoption of a high-carbohydrate Western diet.
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Affiliation(s)
- Bert Little
- School of Public Health and Information Sciences, University of Louisville, Louisville, Kentucky, USA
- Department of Anthropology, University of Louisville, Louisville, Kentucky, USA
| | - Jorge Escobedo
- Clinical Epidemiology Research Unit, IMMS, Mexico City, Mexico
| | - Maria Eugenia Pena Reyes
- Posgrado en Antropología Física de la Escuela Nacional de Antropología e Historia (ENAH), National School of Anthropology and History, Mexico City, Mexico
| | - Shaminul Hoque Shakib
- School of Public Health and Information Sciences, University of Louisville, Louisville, Kentucky, USA
| | - Liz O'Brien
- School of Public Health and Information Sciences, University of Louisville, Louisville, Kentucky, USA
| | - Rich Kerber
- School of Public Health and Information Sciences, University of Louisville, Louisville, Kentucky, USA
| | - Xochitl Velasco
- Clinical Chemistry, Tlacolula Rural Hospital, IMMS, Tlacolula, Oaxaca, Mexico
| | - Miguel Cruz Lopez
- Medical Research Unit in Biochemistry, Specialty Hospital, National Medical Center of the Twenty-First Century, Mexican Institute of Social Security, Mexico City, Mexico
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Angelin M, Kumar J, Vajravelu LK, Satheesan A, Chaithanya V, Murugesan R. Artificial sweeteners and their implications in diabetes: a review. Front Nutr 2024; 11:1411560. [PMID: 38988858 PMCID: PMC11233937 DOI: 10.3389/fnut.2024.1411560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/11/2024] [Indexed: 07/12/2024] Open
Abstract
Diabetes is a significant global health concern, highlighting the critical role of dietary strategies in its management and prevention. Artificial sweeteners (ASs), due to their capacity to provide sweetness without contributing to caloric intake, have emerged as a potential tool in diabetes management. This review thoroughly examines the nuanced relationship between artificial sweeteners and diabetes, addressing their benefits and potential risks. ASs have been shown to aid in weight management, a key factor in reducing diabetes risk, and do not impact immediate blood glucose levels, offering improved glucose control for individuals with diabetes. Beyond these benefits, however, artificial sweeteners may interact complexly with gut microbiota, potentially altering its composition and affecting metabolic health. This interaction introduces concerns regarding insulin sensitivity and the risk of insulin resistance, with studies reporting conflicting findings. This comprehensive review highlights the importance of a nuanced approach to understanding the implications of artificial sweeteners in diabetes management. Given the mixed evidence on their health effects, there is a clear need for further research to fully elucidate the role of artificial sweeteners in metabolic health and their suitability as part of dietary interventions for diabetes.
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Affiliation(s)
- Matcha Angelin
- Department of Microbiology, SRM Medical College Hospital and Research Centre, SRM IST, Kattankulathur, Tamil Nadu, India
| | - Janardhanan Kumar
- Department of General Medicine, SRM Medical College Hospital and Research Centre, SRM IST, Kattankulathur, Tamil Nadu, India
| | - Leela Kakithakara Vajravelu
- Department of Microbiology, SRM Medical College Hospital and Research Centre, SRM IST, Kattankulathur, Tamil Nadu, India
| | - Abhishek Satheesan
- Department of Microbiology, SRM Medical College Hospital and Research Centre, SRM IST, Kattankulathur, Tamil Nadu, India
| | - Venkata Chaithanya
- Department of Microbiology, SRM Medical College Hospital and Research Centre, SRM IST, Kattankulathur, Tamil Nadu, India
| | - Ria Murugesan
- Department of Microbiology, SRM Medical College Hospital and Research Centre, SRM IST, Kattankulathur, Tamil Nadu, India
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Nienaber-Rousseau C. Understanding and applying gene-environment interactions: a guide for nutrition professionals with an emphasis on integration in African research settings. Nutr Rev 2024:nuae015. [PMID: 38442341 DOI: 10.1093/nutrit/nuae015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024] Open
Abstract
Noncommunicable diseases (NCDs) are influenced by the interplay between genetics and environmental exposures, particularly diet. However, many healthcare professionals, including nutritionists and dietitians, have limited genetic background and, therefore, they may lack understanding of gene-environment interactions (GxEs) studies. Even researchers deeply involved in nutrition studies, but with a focus elsewhere, can struggle to interpret, evaluate, and conduct GxE studies. There is an urgent need to study African populations that bear a heavy burden of NCDs, demonstrate unique genetic variability, and have cultural practices resulting in distinctive environmental exposures compared with Europeans or Americans, who are studied more. Although diverse and rapidly changing environments, as well as the high genetic variability of Africans and difference in linkage disequilibrium (ie, certain gene variants are inherited together more often than expected by chance), provide unparalleled potential to investigate the omics fields, only a small percentage of studies come from Africa. Furthermore, research evidence lags behind the practices of companies offering genetic testing for personalized medicine and nutrition. We need to generate more evidence on GxEs that also considers continental African populations to be able to prevent unethical practices and enable tailored treatments. This review aims to introduce nutrition professionals to genetics terms and valid methods to investigate GxEs and their challenges, and proposes ways to improve quality and reproducibility. The review also provides insight into the potential contributions of nutrigenetics and nutrigenomics to the healthcare sphere, addresses direct-to-consumer genetic testing, and concludes by offering insights into the field's future, including advanced technologies like artificial intelligence and machine learning.
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Affiliation(s)
- Cornelie Nienaber-Rousseau
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa
- SAMRC Extramural Unit for Hypertension and Cardiovascular Disease, Faculty of Health Sciences, North-West University, Potchefstroom, South Africa
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Mengue YW, Audate PP, Dubé J, Lebel A. Contribution of environmental determinants to the risk of developing type 2 diabetes mellitus in a life-course perspective: a systematic review protocol. Syst Rev 2024; 13:80. [PMID: 38429833 PMCID: PMC10908215 DOI: 10.1186/s13643-024-02488-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 02/14/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Prevention policies against type 2 diabetes mellitus (T2DM) focus solely on individual healthy lifestyle behaviours, while an increasing body of research recognises the involvement of environmental determinants (ED) (cultural norms of land management and planning, local foodscape, built environment, pollution, and neighbourhood deprivation). Precise knowledge of this relationship is essential to proposing a prevention strategy integrating public health and spatial planning. Unfortunately, issues related to the consistency and synthesis of methods, and results in this field of research limit the development of preventive strategies. This systematic review aims to improve knowledge about the relationship between the risk of developing T2DM in adulthood and long-term exposure to its ED during childhood or teenage years. METHODS This protocol is presented according to the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) tools. PubMed, Embase, CINAHL, Web of Science, EBSCO, and grey literature from the Laval University Libraries databases will be used for data collection on main concepts such as 'type 2 diabetes mellitus', 'zoning' or 'regional, urban, or rural areas land uses', 'local food landscape', 'built environment', 'pollution', and 'deprivation'. The Covidence application will store the collected data for selection and extraction based on the Population Exposure Comparator Outcome and Study design approach (PECOS). Studies published until December 31, 2023, in English or French, used quantitative data about individuals aged 18 and over that report on T2DM, ED (cultural norms of land management and planning, local foodscape, built environment, and neighbourhood deprivation), and their association (involving only risk estimators) will be included. Then, study quality and risk of bias will be conducted according to the combined criteria and ratings from the ROBINS-E (Risk of Bias in Non-randomised Studies-of Exposures) tools and the 'Effective Public Health Practice Project' (EPHPP). Finally, the analytical synthesis will be produced using the 'Synthesis Without Meta-analysis' (SWiM) guidelines. DISCUSSION This systematic review will summarise available evidence on ED associated with T2DM. The results will contribute to improving current knowledge and developing more efficient cross-sectoral interventions in land management and public health in this field of research. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42023392073.
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Affiliation(s)
- Yannick Wilfried Mengue
- Graduate School of Land Management and Regional Planning, Laval University, Quebec, Canada.
- Quebec Heart and Lung Institute, Quebec, Canada.
| | | | - Jean Dubé
- Graduate School of Land Management and Regional Planning, Laval University, Quebec, Canada
| | - Alexandre Lebel
- Graduate School of Land Management and Regional Planning, Laval University, Quebec, Canada
- Quebec Heart and Lung Institute, Quebec, Canada
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León-Pérez G, Bakhtiari E. How Education Shapes Indigenous Health Inequalities in the USA and Mexico. J Racial Ethn Health Disparities 2024:10.1007/s40615-024-01922-4. [PMID: 38411797 DOI: 10.1007/s40615-024-01922-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/28/2024]
Abstract
Indigenous peoples around the world face significant health disparities relative to the dominant groups in their countries, yet the magnitude and patterns of health disparities vary across countries. We use data from the National Health Interview Survey and Mexican Family Life Survey to examine the health of Indigenous peoples in Mexico and American Indians and Alaska Natives in the USA and to evaluate how they fare relative to the majority populations in their countries (non-Indigenous Mexicans and non-Hispanic Whites, respectively). We assess disparities in self-rated health and activity limitations, with a focus on how Indigenous health disparities intersect with educational gradients in health. Regression analyses reveal three primary findings. First, Indigenous health disparities are larger in the USA than in Mexico. Second, differences in educational attainment account for most of the differences between Indigenous and non-Indigenous populations in Mexico, but less than half in the USA. Third, in both countries, health is moderated by educational attainment such that between-group disparities are largest at the highest levels of education. However, for Indigenous Mexicans there is a "cross-over" in which Indigenous Mexicans report better health at the lowest level of education. Overall, this study finds a weak relationship between education and Indigenous health, and raises the question about the validity of using traditional measures of SES in Indigenous contexts.
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Affiliation(s)
- Gabriela León-Pérez
- Department of Sociology, Virginia Commonwealth University, Richmond, VA, USA
| | - Elyas Bakhtiari
- Department of Sociology, William and Mary, Williamsburg, VA, USA.
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Thakur D, Gera T, Bhardwaj V, AlZubi AA, Ali F, Singh J. An enhanced diabetes prediction amidst COVID-19 using ensemble models. Front Public Health 2023; 11:1331517. [PMID: 38155892 PMCID: PMC10754515 DOI: 10.3389/fpubh.2023.1331517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 11/21/2023] [Indexed: 12/30/2023] Open
Abstract
In the contemporary landscape of healthcare, the early and accurate prediction of diabetes has garnered paramount importance, especially in the wake of the COVID-19 pandemic where individuals with diabetes exhibit increased vulnerability. This research embarked on a mission to enhance diabetes prediction by employing state-of-the-art machine learning techniques. Initial evaluations highlighted the Support Vector Machines (SVM) classifier as a promising candidate with an accuracy of 76.62%. To further optimize predictions, the study delved into advanced feature engineering techniques, generating interaction and polynomial features that unearthed hidden patterns in the data. Subsequent correlation analyses, visualized through heatmaps, revealed significant correlations, especially with attributes like Glucose. By integrating the strengths of Decision Trees, Gradient Boosting, and SVM in an ensemble model, we achieved an accuracy of 93.2%, showcasing the potential of harmonizing diverse algorithms. This research offers a robust blueprint for diabetes prediction, holding profound implications for early diagnosis, personalized treatments, and preventive care in the context of global health challenges and with the goal of increasing life expectancy.
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Affiliation(s)
- Deepak Thakur
- Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
| | - Tanya Gera
- Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
| | - Vivek Bhardwaj
- Department of Computer Science and Engineering, Manipal University Jaipur, Jaipur, Rajasthan
| | - Ahmad Ali AlZubi
- Department of Computer Science, Community College, King Saud University, Riyadh, Saudi Arabia
| | - Farman Ali
- Department of Computer Science and Engineering, School of Convergence, College of Computing and Informatics, Sungkyunkwan University, Seoul, Republic of Korea
| | - Jaiteg Singh
- Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
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Misra S, Ke C, Srinivasan S, Goyal A, Nyriyenda MJ, Florez JC, Khunti K, Magliano DJ, Luk A. Current insights and emerging trends in early-onset type 2 diabetes. Lancet Diabetes Endocrinol 2023; 11:768-782. [PMID: 37708901 DOI: 10.1016/s2213-8587(23)00225-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/01/2023] [Accepted: 07/19/2023] [Indexed: 09/16/2023]
Abstract
Type 2 diabetes diagnosed in childhood or early adulthood is termed early-onset type 2 diabetes. Cases of early-onset type 2 diabetes are increasing rapidly globally, alongside rising obesity. Compared with a diagnosis later in life, an earlier-onset diagnosis carries an unexplained excess risk of microvascular complications, adverse cardiovascular outcomes, and earlier death. Women with early-onset type 2 diabetes also have a higher risk of adverse pregnancy outcomes. The high burden of complications renders individuals with early-onset type 2 diabetes at future risk of multimorbidity and interventions to reverse these concerning trends should be a priority. Within the early-onset cohort, disease pathophysiology and interventions have been better studied in paediatric-onset (<19 years) type 2 diabetes compared to adults; however, young adults aged 19-39 years (a larger number proportionally) are not well characterised and are also invisible in the current evidence base supporting management, which is derived from trials in later-onset type 2 diabetes. Young adults with type 2 diabetes face challenges in self-management that older individuals are less likely to experience (being in education or of working age, higher diabetes distress, and possible obesity-related stigma and diabetes-related stigma). There is a major research gap as to the optimal strategies to deploy in managing type 2 diabetes in adolescents and young adults, given that current models of care appear to not work as well in this age group. In the face of manifold risk factors (obesity, female sex, social deprivation, non-White European ethnicity, and genetic risk factors) prevention strategies with tailored lifestyle interventions, where needed, are likely to have greater success, but more evidence is needed. In this Review, we draw on evidence from both adolescents and young adults to provide a contemporary update on the current insights and emerging trends in early-onset type 2 diabetes.
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Affiliation(s)
- Shivani Misra
- Division of Metabolism, Digestion and Reproduction, Imperial College London, London, UK; Department of Diabetes and Endocrinology, Imperial College Healthcare NHS Trust, London, UK.
| | - Calvin Ke
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Department of Medicine, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada; Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Shylaja Srinivasan
- Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics, University of California at San Francisco, San Francisco, CA, USA
| | - Alpesh Goyal
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Moffat J Nyriyenda
- Medical Research Council-Uganda Virus Research Institute and London School of Hygiene & Tropical Medicine, Uganda Research Unit, Entebbe, Uganda; London School of Hygiene and Tropical Medicine, London, UK
| | - Jose C Florez
- Diabetes Unit and Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA; Programs in Metabolism and Medical and Population Genetics, Broad Institute, Cambridge, MA, USA; Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Kamlesh Khunti
- Diabetes Research Centre, Leicester General Hospital, University of Leicester, Leicester, UK
| | - Dianna J Magliano
- Baker Heart and Diabetes Institute, Melbourne, Australia; School of Public Health and Prevention, Monash University Melbourne, Melbourne, Australia
| | - Andrea Luk
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
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Otsuka K, Nishiyama H, Kuriki D, Kawada N, Ochiya T. Connecting the dots in the associations between diet, obesity, cancer, and microRNAs. Semin Cancer Biol 2023; 93:52-69. [PMID: 37156343 DOI: 10.1016/j.semcancer.2023.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/10/2023]
Abstract
The prevalence of obesity has reached pandemic levels worldwide, leading to a lower quality of life and higher health costs. Obesity is a major risk factor for noncommunicable diseases, including cancer, although obesity is one of the major preventable causes of cancer. Lifestyle factors, such as dietary quality and patterns, are also closely related to the onset and development of obesity and cancer. However, the mechanisms underlying the complex association between diet, obesity, and cancer remain unclear. In the past few decades, microRNAs (miRNAs), a class of small non-coding RNAs, have been demonstrated to play critical roles in biological processes such as cell differentiation, proliferation, and metabolism, highlighting their importance in disease development and suppression and as therapeutic targets. miRNA expression levels can be modulated by diet and are involved in cancer and obesity-related diseases. Circulating miRNAs can also mediate cell-to-cell communications. These multiple aspects of miRNAs present challenges in understanding and integrating their mechanism of action. Here, we introduce a general consideration of the associations between diet, obesity, and cancer and review the current knowledge of the molecular functions of miRNA in each context. A comprehensive understanding of the interplay between diet, obesity, and cancer could be valuable for the development of effective preventive and therapeutic strategies in future.
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Affiliation(s)
- Kurataka Otsuka
- Tokyo NODAI Research Institure, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya, Tokyo 156-8502, Japan; R&D Division, Kewpie Corporation, 2-5-7, Sengawa-cho, Chofu-shi, Tokyo 182-0002, Japan; Division of Molecular and Cellular Medicine, Institute of Medical Science, Tokyo Medical University, 6-7-1, Nishishinjyuku, Shinjuku-ku, Tokyo 160-0023, Japan; Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, 5-1-1, Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
| | - Hiroshi Nishiyama
- R&D Division, Kewpie Corporation, 2-5-7, Sengawa-cho, Chofu-shi, Tokyo 182-0002, Japan
| | - Daisuke Kuriki
- R&D Division, Kewpie Corporation, 2-5-7, Sengawa-cho, Chofu-shi, Tokyo 182-0002, Japan
| | - Naoki Kawada
- R&D Division, Kewpie Corporation, 2-5-7, Sengawa-cho, Chofu-shi, Tokyo 182-0002, Japan
| | - Takahiro Ochiya
- Division of Molecular and Cellular Medicine, Institute of Medical Science, Tokyo Medical University, 6-7-1, Nishishinjyuku, Shinjuku-ku, Tokyo 160-0023, Japan
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Wispelwey B, Tanous O, Asi Y, Hammoudeh W, Mills D. Because its power remains naturalized: introducing the settler colonial determinants of health. Front Public Health 2023; 11:1137428. [PMID: 37533522 PMCID: PMC10393129 DOI: 10.3389/fpubh.2023.1137428] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 05/23/2023] [Indexed: 08/04/2023] Open
Abstract
Indigenous people suffer earlier death and more frequent and severe disease than their settler counterparts, a remarkably persistent reality over time, across settler colonized geographies, and despite their ongoing resistance to elimination. Although these health inequities are well-known, they have been impervious to comprehensive and convincing explication, let alone remediation. Settler colonial studies, a fast-growing multidisciplinary and interdisciplinary field, is a promising candidate to rectify this impasse. Settler colonialism's relationship to health inequity is at once obvious and incompletely described, a paradox arising from epistemic coloniality and perceived analytic challenges that we address here in three parts. First, in considering settler colonialism an enduring structure rather than a past event, and by wedding this fundamental insight to the ascendant structural paradigm for understanding health inequities, a picture emerges in which this system of power serves as a foundational and ongoing configuration determining social and political mechanisms that impose on human health. Second, because modern racialization has served to solidify and maintain the hierarchies of colonial relations, settler colonialism adds explanatory power to racism's health impacts and potential amelioration by historicizing this process for differentially racialized groups. Finally, advances in structural racism methodologies and the work of a few visionary scholars have already begun to elucidate the possibilities for a body of literature linking settler colonialism and health, illuminating future research opportunities and pathways toward the decolonization required for health equity.
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Affiliation(s)
- Bram Wispelwey
- Department of Global Health and Population, School of Public Health, Harvard University, Boston, MA, United States
- Division of Global Health Equity, Department of Medicine, Brigham and Women's Hospital, Boston, MA, United States
- François-Xavier Bagnoud Center for Health and Human Rights, School of Public Health, Harvard University, Boston, MA, United States
| | - Osama Tanous
- François-Xavier Bagnoud Center for Health and Human Rights, School of Public Health, Harvard University, Boston, MA, United States
| | - Yara Asi
- François-Xavier Bagnoud Center for Health and Human Rights, School of Public Health, Harvard University, Boston, MA, United States
- School of Global Health Management and Informatics, College of Community Innovation and Education, University of Central Florida, Orlando, FL, United States
| | - Weeam Hammoudeh
- François-Xavier Bagnoud Center for Health and Human Rights, School of Public Health, Harvard University, Boston, MA, United States
- Institute of Community and Public Health, Birzeit University, Birzeit, Palestine
| | - David Mills
- François-Xavier Bagnoud Center for Health and Human Rights, School of Public Health, Harvard University, Boston, MA, United States
- Division of Emergency Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
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13
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Herzl E, Schmitt EE, Shearrer G, Keith JF. The Effects of a Western Diet vs. a High-Fiber Unprocessed Diet on Health Outcomes in Mice Offspring. Nutrients 2023; 15:2858. [PMID: 37447184 DOI: 10.3390/nu15132858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/16/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Diet influences critical periods of growth, including gestation and early development. We hypothesized that a maternal/early life diet reflecting unprocessed dietary components would positively affect offspring metabolic and anthropometric parameters. Using 9 C57BL-6 dams, we simulated exposure to a Western diet, a high-fiber unprocessed diet (HFUD), or a control diet. The dams consumed their respective diets (Western [n = 3], HFUD [n = 3], and control [n = 3]) through 3 weeks of pregnancy and 3 weeks of weaning; their offspring consumed the diet of their mother for 4.5 weeks post weaning. Measurements included dual X-ray absorptiometry (DEXA) scans, feed consumption, body weight, blood glucose, and insulin and glycated hemoglobin (HbA1c) in the offspring. Statistical analyses included one-way ANOVA with Tukey's post hoc analysis. The offspring DEXA measures at 5 and 7.5 weeks post parturition revealed higher lean body mass development in the HFUD and control diet offspring compared to the Western diet offspring. An analysis indicated that blood glucose (p = 0.001) and HbA1c concentrations (p = 0.002) were lower among the HFUD offspring compared to the Western and control offspring. The results demonstrate that diet during gestation and early life consistent with traditional diet patterns may influence hyperglycemia and adiposity in offspring.
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Affiliation(s)
- Elizabeth Herzl
- Department of Family & Consumer Sciences, University of Wyoming, Laramie, WY 82071, USA
| | - Emily E Schmitt
- Division of Kinesiology & Health, University of Wyoming, Laramie, WY 82071, USA
- WWAMI Medical Education, University of Wyoming, Laramie, WY 82071, USA
| | - Grace Shearrer
- Department of Family & Consumer Sciences, University of Wyoming, Laramie, WY 82071, USA
- WWAMI Medical Education, University of Wyoming, Laramie, WY 82071, USA
| | - Jill F Keith
- Department of Family & Consumer Sciences, University of Wyoming, Laramie, WY 82071, USA
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14
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Looker HC, Chang DC, Baier LJ, Hanson RL, Nelson RG. Diagnostic criteria and etiopathogenesis of type 2 diabetes and its complications: Lessons from the Pima Indians. Presse Med 2023; 52:104176. [PMID: 37783422 PMCID: PMC10805453 DOI: 10.1016/j.lpm.2023.104176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/28/2023] [Accepted: 07/19/2023] [Indexed: 10/04/2023] Open
Abstract
The Phoenix Epidemiology and Clinical Research Branch of the National Institute of Diabetes and Digestive and Kidney Diseases has conducted prospective studies of diabetes and its complications in the Pima Indians living in Arizona, USA for over 50 years. In this review we highlight areas in which these studies provided vital insights into the criteria used to diagnose type 2 diabetes, the pathophysiologic changes that accompany the development of type 2 diabetes, and the course and determinants of diabetes complications-focusing specifically on diabetic kidney disease. We include data from our longitudinal population-based study of diabetes and its complications, studies on the role of insulin resistance and insulin secretion in the pathophysiology of type 2 diabetes, and in-depth studies of diabetic kidney disease that include measures of glomerular function and research kidney biopsies. We also focus on the emerging health threat posed by youth-onset type 2 diabetes, which was first seen in the Pima Indians in the 1960s and is becoming an increasing issue worldwide.
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Affiliation(s)
- Helen C Looker
- Chronic Kidney Disease Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | - Douglas C Chang
- Obesity and Diabetes Clinical Research Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | - Leslie J Baier
- Diabetes Molecular Genetics Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | - Robert L Hanson
- Diabetes Genetic Epidemiology Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA
| | - Robert G Nelson
- Chronic Kidney Disease Section, National Institute of Diabetes and Digestive and Kidney Diseases, Phoenix, AZ, USA.
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15
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Inhibition of Succinate Dehydrogenase by Pesticides (SDHIs) and Energy Metabolism. Int J Mol Sci 2023; 24:ijms24044045. [PMID: 36835457 PMCID: PMC9962667 DOI: 10.3390/ijms24044045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/07/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Succinate dehydrogenase (SDH) is one of the enzymes of the tricarboxylic acid cycle (Krebs cycle) and complex II of the mitochondrial respiratory chain. A class of fungicides (SDHIs) targets the complex II reaction in the SDH. A large number of those in use have been shown to inhibit SDH in other phyla, including humans. This raises questions about possible effects on human health and non-target organisms in the environment. The present document will address metabolic consequences in mammals; it is neither a review on SDH nor is it about the toxicology of SDHIs. Most clinically relevant observations are linked to a severe decrease in SDH activity. Here we shall examine the mechanisms for compensating a loss of SDH activity and their possible weaknesses or adverse consequences. It can be expected that a mild inhibition of SDH will be compensated by the kinetic properties of this enzyme, but this implies a proportionate increase in succinate concentration. This would be relevant for succinate signaling and epigenetics (not reviewed here). With regard to metabolism, exposure of the liver to SDHIs would increase the risk for non-alcoholic fatty liver disease (NAFLD). Higher levels of inhibition may be compensated by modification of metabolic fluxes with net production of succinate. SDHIs are much more soluble in lipids than in water; consequently, a different diet composition between laboratory animals and humans is expected to influence their absorption.
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16
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Redmond LC, Wensel CR, Estradé M, Fleischhacker SE, Poirer L, Jock BW, Gittelsohn J. Dietary outcomes of a multilevel, multicomponent, cluster randomized obesity intervention in six Native American communities in the upper Midwest and Southwest United States. Curr Dev Nutr 2023. [DOI: 10.1016/j.cdnut.2023.100043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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Wang X, Liu J, Wang Q, Chen Q. The transcriptomic and epigenetic alterations in type 2 diabetes mellitus patients of Chinese Tibetan and Han populations. Front Endocrinol (Lausanne) 2023; 14:1122047. [PMID: 36891054 PMCID: PMC9987421 DOI: 10.3389/fendo.2023.1122047] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/01/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Due to the distinctive living environment, lifestyle, and diet, the Tibetan community in China has the lowest prevalence of T2DM and prediabetes among numerous ethnic groups, while Han community shows the highest statistic. In this study, we aim to conclude the clinical manifestations of both Tibetan and Han T2DM patients and their association with transcriptomic and epigenetic alterations. METHODS A cross-sectional study including 120 T2DM patients from Han and Tibetan ethnic groups were conducted between 2019 to 2021 at the Hospital of Chengdu University of Traditional Chinese Medicine. The various clinical features and laboratory tests were recorded and analyzed between the two groups. The genome-wide methylation pattern and RNA expression were determined by Reduced Representation Bisulfite Sequencing (RBBS) and Poly (A) RNA sequencing (RNA-seq) from leucocytes of peripheral blood samples in 6 Han and 6 Tibetan patients. GO analysis and KEGG analysis were conducted in differentially expressed genes and those with differentially methylated regions. RESULTS Compared to Han, Tibetan T2DM individuals intake more coarse grains, meat and yak butter, but less refined grains, vegetables and fruit. They also showed increased BMI, Hb, HbA1c, LDL, ALT, GGT and eGFR, and decreased level of BUN. Among the 12 patients in the exploratory cohort, we identified 5178 hypomethylated and 4787 hypermethylated regions involving 1613 genes in the Tibetan group. RNA-seq showed a total of 947 differentially expressed genes (DEGs) between the two groups, with 523 up-regulated and 424 down-regulated in Tibetan patients. By integrating DNA methylation and RNA expression data, we identified 112 DEGs with differentially methylated regions (overlapping genes) and 14 DEGs with promoter-related DMRs. The functional enrichment analysis demonstrated that the overlapping genes were primarily involved in metabolic pathways, PI3K-Akt signaling pathway, MAPK signaling pathway, pathways in cancer and Rap1 signaling pathway. CONCLUSION Our study demonstrates the clinical characteristics of T2DM differ subtly between various ethnic groups that may be related to epigenetic modifications, thus providing evidence and ideas for additional research on the genetic pattern of T2DM.
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Affiliation(s)
- Xian Wang
- School of Biological and Behavioral Sciences, Queen Mary University of London, London, United Kingdom
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jie Liu
- Department of Endocrinology, Kunming Municipal Hospital of Traditional Chinese Medicine, Kumning, China
| | - Qiuhong Wang
- Department of Endocrinology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- *Correspondence: Qiuhong Wang, ; Qiu Chen,
| | - Qiu Chen
- Department of Endocrinology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Qiuhong Wang, ; Qiu Chen,
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18
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Peng G, Pakstis AJ, Gandotra N, Cowan TM, Zhao H, Kidd KK, Scharfe C. Metabolic diversity in human populations and correlation with genetic and ancestral geographic distances. Mol Genet Metab 2022; 137:292-300. [PMID: 36252453 PMCID: PMC10131177 DOI: 10.1016/j.ymgme.2022.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 09/04/2022] [Accepted: 10/08/2022] [Indexed: 11/17/2022]
Abstract
DNA polymorphic markers and self-defined ethnicity groupings are used to group individuals with shared ancient geographic ancestry. Here we studied whether ancestral relationships between individuals could be identified from metabolic screening data reported by the California newborn screening (NBS) program. NBS data includes 41 blood metabolites measured by tandem mass spectrometry from singleton babies in 17 parent-reported ethnicity groupings. Ethnicity-associated differences identified for 71% of NBS metabolites (29 of 41, Cohen's d > 0.5) showed larger differences in blood levels of acylcarnitines than of amino acids (P < 1e-4). A metabolic distance measure, developed to compare ethnic groupings based on metabolic differences, showed low positive correlation with genetic and ancient geographic distances between the groups' ancestral world populations. Several outlier group pairs were identified with larger genetic and smaller metabolic distances (Black versus White) or with smaller genetic and larger metabolic distances (Chinese versus Japanese) indicating the influence of genetic and of environmental factors on metabolism. Using machine learning, comparison of metabolic profiles between all pairs of ethnic groupings distinguished individuals with larger genetic distance (Black versus Chinese, AUC = 0.96), while genetically more similar individuals could not be separated metabolically (Hispanic versus Native American, AUC = 0.51). Additionally, we identified metabolites informative for inferring metabolic ancestry in individuals from genetically similar populations, which included biomarkers for inborn metabolic disorders (C10:1, C12:1, C3, C5OH, Leucine-Isoleucine). This work sheds new light on metabolic differences in healthy newborns in diverse populations, which could have implications for improving genetic disease screening.
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Affiliation(s)
- Gang Peng
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA; Department of Biostatistics, Yale University School of Public Health, New Haven, CT, USA
| | - Andrew J Pakstis
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Neeru Gandotra
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Tina M Cowan
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Hongyu Zhao
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA; Department of Biostatistics, Yale University School of Public Health, New Haven, CT, USA
| | - Kenneth K Kidd
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Curt Scharfe
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA.
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19
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Madimenos FC, Gildner TE, Eick GN, Sugiyama LS, Snodgrass JJ. Bringing the lab bench to the field: Point-of-care testing for enhancing health research and stakeholder engagement in rural/remote, indigenous, and resource-limited contexts. Am J Hum Biol 2022; 34:e23808. [PMID: 36166487 DOI: 10.1002/ajhb.23808] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 08/03/2022] [Accepted: 09/12/2022] [Indexed: 01/25/2023] Open
Abstract
Point-of-care testing (POCT) allows researchers and health-care providers to bring the lab bench to the field, providing essential health information that can be leveraged to improve health care, accessibility, and understanding across clinical and research settings. Gaps in health service access are most pronounced in what we term RIR settings-rural/remote regions, involving Indigenous peoples, and/or within resource-limited settings. In these contexts, morbidity and mortality from infectious and non-communicable diseases are disproportionately higher due to numerous geographic, economic, political, and sociohistorical factors. Human biologists and global health scholars are well-positioned to contribute on-the-ground-level insights that can serve to minimize global health inequities and POCT has the potential to augment such approaches. While the clinical benefits of POCT include increasing health service access by bringing testing, rapid diagnosis, and treatment to underserved communities with limited pathways to centralized laboratory testing, POCT also provides added benefits to both health-focused researchers and their participants. Through portable, minimally invasive devices, researchers can provide actionable health data to participants by coupling POCT with population-specific health education, discussing results and their implications, creating space for participants to voice concerns, and facilitating linkages to treatment. POCT can also strengthen human biology research by shedding light on questions of evolutionary and biocultural importance. Here, we expand on the epidemiological and research value, as well as practical and ethical challenges of POCT across stakeholders (i.e., participant, community, health researcher, and trainee). Finally, we emphasize the immense opportunities of POCT for fostering collaborative research and enhancing access to health delivery and information and, by extension, helping to mitigate persistent global health inequities.
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Affiliation(s)
- Felicia C Madimenos
- Department of Anthropology, Queens College (CUNY), New York, USA.,New York Consortium of Evolutionary Primatology (NYCEP), CUNY Graduate Center, New York, USA
| | - Theresa E Gildner
- Department of Anthropology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Geeta N Eick
- Department of Anthropology, University of Oregon, Eugene, Oregon, USA
| | | | - James J Snodgrass
- Department of Anthropology, University of Oregon, Eugene, Oregon, USA.,Center for Global Health, University of Oregon, Eugene, Oregon, USA.,Global Station for Indigenous Studies and Cultural Diversity, Hokkaido University, Sapporo, Japan
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20
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Sørensen TIA, Metz S, Kilpeläinen TO. Do gene-environment interactions have implications for the precision prevention of type 2 diabetes? Diabetologia 2022; 65:1804-1813. [PMID: 34993570 DOI: 10.1007/s00125-021-05639-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 11/05/2021] [Indexed: 01/10/2023]
Abstract
The past decades have seen a rapid global rise in the incidence of type 2 diabetes. This surge has been driven by diabetogenic environmental changes that may act together with a genetic predisposition to type 2 diabetes. It is possible that there is a synergistic gene-environment interaction, where the effects of the diabetogenic environment depend on the genetic predisposition to type 2 diabetes. Randomised trials have shown that it is possible to delay, or even prevent the development of type 2 diabetes in individuals at elevated risk through behavioural modification, focusing on weight loss, physical activity and diet. There is wide heterogeneity between individuals regarding the effectiveness of these interventions, which could, in part, be due to genetic differences. However, the studies of gene-environment interactions performed thus far suggest that behavioural modifications appear equally effective in reducing the incidence of type 2 diabetes from the stage of impaired glucose tolerance, regardless of the known underlying genetic predisposition. Recent studies suggest that there may be several subtypes of type 2 diabetes, which give new opportunities for gaining insight into gene-environment interactions. At present, the role of gene-environment interactions in the development of type 2 diabetes remains unclear. With many puzzle pieces missing in the general picture of type 2 diabetes development, the available evidence of gene-environment interactions is not ready for translation to individualised type 2 diabetes prevention based on genetic profiling.
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Affiliation(s)
- Thorkild I A Sørensen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Section of Epidemiology, Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sophia Metz
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Tuomas O Kilpeläinen
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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21
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Li A, Deyrup AT, Graves JL, Ross LF. Race in the Reading: A Study of Problematic Uses of Race and Ethnicity in a Prominent Pediatrics Textbook. ACADEMIC MEDICINE : JOURNAL OF THE ASSOCIATION OF AMERICAN MEDICAL COLLEGES 2022; 97:1521-1527. [PMID: 35294417 DOI: 10.1097/acm.0000000000004666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
PURPOSE Aspects of medical education and clinical practice continue to reflect the antiquated notion that race is a biologically valid distinction among individuals rather than a social construct. The authors analyzed the use of race and ethnicity in a popular pediatrics textbook to determine if these concepts were being used consistently and correctly. METHOD In May 2021, using the search function on the American Academy of Pediatrics (AAP) eBooks platform, the authors searched for 29 race- or ethnicity-related terms (e.g., African, Asian, Black, race) in the AAP Textbook of Pediatric Care, 2nd Edition , which was published in 2016. One researcher extracted direct quotes containing at least one of these search terms. Three researchers independently coded each quote as problematic or nonproblematic with respect to the use of the search terms, excluding examples in which the terms were used in irrelevant contexts (e.g., black box warning). The researchers then identified themes based on the quotes that used race and ethnicity problematically. RESULTS The search produced 2,167 total results across the search terms, 806 of which were relevant to race or ethnicity and were analyzed. Problematic quotes: (1) used race or ethnicity as a surrogate for social variables, (2) conflated terminology (e.g., conflated socially defined race with genetic ancestry), (3) overgeneralized or made claims based on limited data, (4) lacked clinical relevance, (5) lacked inclusivity, (6) promoted racial stereotypes, or (7) made contradicting claims about race. CONCLUSIONS The use of race and ethnicity in the AAP Textbook of Pediatric Care, 2nd Edition was not always appropriate, as demonstrated by examples that reified race as a biological fact and thereby promoted structural racism. Critical evaluation of the use of race and ethnicity in all current medical textbooks and future revisions is warranted.
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Affiliation(s)
- Alice Li
- A. Li is a third-year medical student, Pritzker School of Medicine at the University of Chicago, Chicago, Illinois
| | - Andrea T Deyrup
- A.T. Deyrup is professor of pathology, Duke University School of Medicine, Durham, North Carolina
| | - Joseph L Graves
- J.L. Graves Jr is professor of biological sciences, Department of Biology, North Carolina A&T State University, Greensboro, North Carolina, and associate director, Triangle Center for Evolutionary Medicine, Durham, North Carolina
| | - Lainie Friedman Ross
- L.F. Ross is the Carolyn and Matthew Bucksbaum Professor of Clinical Ethics, professor of pediatrics, medicine, and surgery, associate director, MacLean Center for Clinical Medical Ethics, and codirector, Institute for Translational Medicine, University of Chicago, Chicago, Illinois
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22
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Chater N, Loewenstein G. The i-frame and the s-frame: How focusing on individual-level solutions has led behavioral public policy astray. Behav Brain Sci 2022; 46:e147. [PMID: 36059098 DOI: 10.1017/s0140525x22002023] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An influential line of thinking in behavioral science, to which the two authors have long subscribed, is that many of society's most pressing problems can be addressed cheaply and effectively at the level of the individual, without modifying the system in which the individual operates. We now believe this was a mistake, along with, we suspect, many colleagues in both the academic and policy communities. Results from such interventions have been disappointingly modest. But more importantly, they have guided many (though by no means all) behavioral scientists to frame policy problems in individual, not systemic, terms: To adopt what we call the "i-frame," rather than the "s-frame." The difference may be more consequential than i-frame advocates have realized, by deflecting attention and support away from s-frame policies. Indeed, highlighting the i-frame is a long-established objective of corporate opponents of concerted systemic action such as regulation and taxation. We illustrate our argument briefly for six policy problems, and in depth with the examples of climate change, obesity, retirement savings, and pollution from plastic waste. We argue that the most important way in which behavioral scientists can contribute to public policy is by employing their skills to develop and implement value-creating system-level change.
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Affiliation(s)
- Nick Chater
- Behavioural Science Group, Warwick Business School, University of Warwick, Coventry, UK. ; https://www.wbs.ac.uk/about/person/nick-chater/
| | - George Loewenstein
- Department of Social and Decision Sciences, Carnegie Mellon University, Pittsburgh, PA, USA. ://www.cmu.edu/dietrich/sds/people/faculty/george-loewenstein.html
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23
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Chakraborty A, Cargo M, Oguoma VM, Coffee NT, Chong A, Daniel M. Built Environment Features and Cardiometabolic Mortality and Morbidity in Remote Indigenous Communities in the Northern Territory, Australia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19159435. [PMID: 35954785 PMCID: PMC9368214 DOI: 10.3390/ijerph19159435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/29/2022] [Accepted: 07/29/2022] [Indexed: 02/04/2023]
Abstract
Indigenous Australians experience poorer health than non-Indigenous Australians, with cardiometabolic diseases (CMD) being the leading causes of morbidity and mortality. Built environmental (BE) features are known to shape cardiometabolic health in urban contexts, yet little research has assessed such relationships for remote-dwelling Indigenous Australians. This study assessed associations between BE features and CMD-related morbidity and mortality in a large sample of remote Indigenous Australian communities in the Northern Territory (NT). CMD-related morbidity and mortality data were extracted from NT government health databases for 120 remote Indigenous Australian communities for the period 1 January 2010 to 31 December 2015. BE features were extracted from Serviced Land Availability Programme (SLAP) maps. Associations were estimated using negative binomial regression analysis. Univariable analysis revealed protective effects on all-cause mortality for the BE features of Education, Health, Disused Buildings, and Oval, and on CMD-related emergency department admissions for the BE feature Accommodation. Incidence rate ratios (IRR’s) were greater, however, for the BE features Infrastructure Transport and Infrastructure Shelter. Geographic Isolation was associated with elevated mortality-related IRR’s. Multivariable regression did not yield consistent associations between BE features and CMD outcomes, other than negative relationships for Indigenous Location-level median age and Geographic Isolation. This study indicates that relationships between BE features and health outcomes in urban populations do not extend to remote Indigenous Australian communities. This may reflect an overwhelming impact of broader social inequity, limited correspondence of BE measures with remote-dwelling Indigenous contexts, or a ‘tipping point’ of collective BE influences affecting health more than singular BE features.
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Affiliation(s)
- Amal Chakraborty
- University Centre for Rural Health, The University of Sydney, Lismore, NSW 2480, Australia
- Correspondence:
| | - Margaret Cargo
- Health Research Institute, Faculty of Health, University of Canberra, Bruce, ACT 2601, Australia; (M.C.); (N.T.C.); (M.D.)
| | - Victor Maduabuchi Oguoma
- Poche Centre for Indigenous Health, Faculty of Health and Behavioural Sciences, The University of Queensland, St Lucia, QLD 4067, Australia;
| | - Neil T. Coffee
- Health Research Institute, Faculty of Health, University of Canberra, Bruce, ACT 2601, Australia; (M.C.); (N.T.C.); (M.D.)
- Deakin Rural Health, Rural Health Multidisciplinary Training (RHMT) Program, School of Medicine, Deakin University, Warrnambool, VIC 3280, Australia
- Australian Centre for Housing Research, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Alwin Chong
- Arney Chong Consulting, Adelaide, SA 5081, Australia;
| | - Mark Daniel
- Health Research Institute, Faculty of Health, University of Canberra, Bruce, ACT 2601, Australia; (M.C.); (N.T.C.); (M.D.)
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24
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Chang V, Bailey J, Xu QA, Sun Z. Pima Indians diabetes mellitus classification based on machine learning (ML) algorithms. Neural Comput Appl 2022; 35:1-17. [PMID: 35345556 PMCID: PMC8943493 DOI: 10.1007/s00521-022-07049-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 01/31/2022] [Indexed: 01/16/2023]
Abstract
This paper proposes an e-diagnosis system based on machine learning (ML) algorithms to be implemented on the Internet of Medical Things (IoMT) environment, particularly for diagnosing diabetes mellitus (type 2 diabetes). However, the ML applications tend to be mistrusted because of their inability to show the internal decision-making process, resulting in slow uptake by end-users within certain healthcare sectors. This research delineates the use of three interpretable supervised ML models: Naïve Bayes classifier, random forest classifier, and J48 decision tree models to be trained and tested using the Pima Indians diabetes dataset in R programming language. The performance of each algorithm is analyzed to determine the one with the best accuracy, precision, sensitivity, and specificity. An assessment of the decision process is also made to improve the model. It can be concluded that a Naïve Bayes model works well with a more fine-tuned selection of features for binary classification, while random forest works better with more features.
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Affiliation(s)
- Victor Chang
- Department of Operations and Information Management, Aston Business School, Aston University, Birmingham, UK
| | - Jozeene Bailey
- Cybersecurity, Information Systems and AI Research Group, School of Computing and Digital Technologies, Teesside University, Middlesbrough, UK
| | - Qianwen Ariel Xu
- Cybersecurity, Information Systems and AI Research Group, School of Computing and Digital Technologies, Teesside University, Middlesbrough, UK
| | - Zhili Sun
- Institute for Communication Systems (ICS), 5G and 6G Innovation Centre (5G&6GIC), University of Surrey, Guildford, Surrey UK
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Kim J, Kwon HS. Not Control but Conquest: Strategies for the Remission of Type 2 Diabetes Mellitus. Diabetes Metab J 2022; 46:165-180. [PMID: 35385632 PMCID: PMC8987695 DOI: 10.4093/dmj.2021.0377] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/02/2022] [Indexed: 12/14/2022] Open
Abstract
A durable normoglycemic state was observed in several studies that treated type 2 diabetes mellitus (T2DM) patients through metabolic surgery, intensive therapeutic intervention, or significant lifestyle modification, and it was confirmed that the functional β-cell mass was also restored to a normal level. Therefore, expert consensus introduced the concept of remission as a common term to express this phenomenon in 2009. Throughout this article, we introduce the recently updated consensus statement on the remission of T2DM in 2021 and share our perspective on the remission of diabetes. There is a need for more research on remission in Korea as well as in Western countries. Remission appears to be prompted by proactive treatment for hyperglycemia and significant weight loss prior to irreversible β-cell changes. T2DM is not a diagnosis for vulnerable individuals to helplessly accept. We attempt to explain how remission of T2DM can be achieved through a personalized approach. It may be necessary to change the concept of T2DM towards that of an urgent condition that requires rapid intervention rather than a chronic, progressive disease. We must grasp this paradigm shift in our understanding of T2DM for the benefit of our patients as endocrine experts.
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Affiliation(s)
- Jinyoung Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyuk-Sang Kwon
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Corresponding author: Hyuk-Sang Kwon https://orcid.org/0000-0003-4026-4572 Division of Endocrinology and Metabolism, Department of Internal Medicine, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, 10 63(yuksam)-ro, Yeongdeungpo-gu, Seoul 07345, Korea E-mail:
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Serna-Gutiérrez A, Castro-Juarez AA, Romero-Martínez M, Alemán-Mateo H, Díaz-Zavala RG, Quihui-Cota L, Álvarez-Hernández G, Gallegos-Aguilar AC, Esparza-Romero J. Prevalence of overweight, obesity and central obesity and factors associated with BMI in indigenous yaqui people: a probabilistic cross-sectional survey. BMC Public Health 2022; 22:308. [PMID: 35164732 PMCID: PMC8845338 DOI: 10.1186/s12889-022-12702-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 01/12/2022] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND The Yaquis are an Indigenous group who inhabit in the state of Sonora in northwestern Mexico. This group has experienced changes in their lifestyle, moving from a traditional lifestyle to a more modern one, resulting in an increase of obesity and its comorbidities. However, few studies have been done in this group. The aim of this study was to determine the prevalence of overweight, obesity and central obesity and to identify the factors associated with body mass index (BMI) in a representative sample of Indigenous Yaqui people from Sonora, Mexico. METHODS A cross-sectional survey with multistage sampling was conducted among adults (N = 351) with residence in Yaqui traditional villages (Vícam, Pótam, Loma de Guamúchil, Loma de Bácum, Tórim, Ráhum, Huiribis or Belem). Anthropometric measurements were taken to diagnose overweight, obesity and central obesity. Food frequency and physical activity (PA) questionnaires designed for the Yaqui population were applied, as well as sociodemographic and clinical history questionnaires. The factors associated with BMI were assessed using multiple linear regression considering the complex design of the sampling. RESULTS The prevalence of overweight, obesity and central obesity in the population were 36.5%, 35.0% and 76.0%, respectively. Having higher values of the modernization index (β = 0.20, p = 0.049) was associated with a higher BMI, while having a higher consumption of a "prudent" dietary pattern (traditional dishes, fruits, vegetables and low-fat dairy) (β = -0.58, p = 0.009) and performing a greater number of hours per week of vigorous PA (β = -0.14, p = 0.017) were associated with a lower BMI. CONCLUSIONS The prevalence of the studied abnormalities is high. The evidence presented in this study suggests that interventions are needed and more research is required to determine the appropriate components of such interventions, in order to meet the needs of the Yaqui people.
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Affiliation(s)
- Araceli Serna-Gutiérrez
- Sociocultural Department, Technological Institute of Sonora, 85137, Cd. Obregón, Sonora, México
| | - Alejandro Arturo Castro-Juarez
- Diabetes Research Unit, Department of Public Nutrition and Health, Nutrition Coordination, Research Center for Food and Development (CIAD, A.C.), 83304, Hermosillo, Sonora, México
| | - Martín Romero-Martínez
- Evaluation and Surveys Research Center, National Institute of Public Health, 62100, Cuernavaca, Morelos, México
| | - Heliodoro Alemán-Mateo
- Department of Nutrition and Metabolism, Nutrition Coordination, Research Center for Food and Development (CIAD. A.C.), 83304, Hermosillo, Sonora, México
| | - Rolando Giovanni Díaz-Zavala
- Nutrition Health Promotion Center, Department of Chemical and Biological Sciences, University of Sonora, 83000, Hermosillo, Sonora, México
| | - Luis Quihui-Cota
- Department of Nutrition and Metabolism, Nutrition Coordination, Research Center for Food and Development (CIAD. A.C.), 83304, Hermosillo, Sonora, México
| | | | - Ana Cristina Gallegos-Aguilar
- Diabetes Research Unit, Department of Public Nutrition and Health, Nutrition Coordination, Research Center for Food and Development (CIAD, A.C.), 83304, Hermosillo, Sonora, México
| | - Julián Esparza-Romero
- Diabetes Research Unit, Department of Public Nutrition and Health, Nutrition Coordination, Research Center for Food and Development (CIAD, A.C.), 83304, Hermosillo, Sonora, México. .,Diabetes Research Unit, Deparment of Public Nutrition and Health, Nutrition Coordination, Research Center for Food and Development (CIAD, A.C.), Carretera Gustavo Enrique Astiazarán Rosas No. 46, Col. La Victoria, 83304, Hermosillo, Sonora, México.
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Pressler M, Devinsky J, Duster M, Lee JH, Glick CS, Wiener S, Laze J, Friedman D, Roberts T, Devinsky O. Dietary Transitions and Health Outcomes in Four Populations - Systematic Review. Front Nutr 2022; 9:748305. [PMID: 35252289 PMCID: PMC8892920 DOI: 10.3389/fnut.2022.748305] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 01/03/2022] [Indexed: 01/27/2023] Open
Abstract
IMPORTANCE Non-communicable chronic diseases (NCDs) such as obesity, type 2 diabetes, heart disease, and cancer were rare among non-western populations with traditional diets and lifestyles. As populations transitioned toward industrialized diets and lifestyles, NCDs developed. OBJECTIVE We performed a systematic literature review to examine the effects of diet and lifestyle transitions on NCDs. EVIDENCE REVIEW We identified 22 populations that underwent a nutrition transition, eleven of which had sufficient data. Of these, we chose four populations with diverse geographies, diets and lifestyles who underwent a dietary and lifestyle transition and explored the relationship between dietary changes and health outcomes. We excluded populations with features overlapping with selected populations or with complicating factors such as inadequate data, subgroups, and different study methodologies over different periods. The selected populations were Yemenite Jews, Tokelauans, Tanushimaru Japanese, and Maasai. We also review transition data from seven excluded populations (Pima, Navajo, Aboriginal Australians, South African Natal Indians and Zulu speakers, Inuit, and Hadza) to assess for bias. FINDINGS The three groups that replaced saturated fats (SFA) from animal (Yemenite Jews, Maasai) or plants (Tokelau) with refined carbohydrates had negative health outcomes (e.g., increased obesity, diabetes, heart disease). Yemenites reduced SFA consumption by >40% post-transition but men's BMI increased 19% and diabetes increased ~40-fold. Tokelauans reduced fat, dramatically reduced SFA, and increased sugar intake: obesity and diabetes rose. The Tanushimaruans transitioned to more fats and less carbohydrates and used more anti-hypertensive medications; stroke and breast cancer declined while heart disease was stable. The Maasai transitioned to lower fat, SFA and higher carbohydrates and had increased BMI and diabetes. Similar patterns were observed in the seven other populations. CONCLUSION The nutrient category most strongly associated with negative health outcomes - especially obesity and diabetes - was sugar (increased 600-650% in Yemenite Jews and Tokelauans) and refined carbohydrates (among Maasai, total carbohydrates increased 39% in men and 362% in women), while increased calories was less strongly associated with these disorders. Across 11 populations, NCDs were associated with increased refined carbohydrates more than increased calories, reduced activity or other factors, but cannot be attributed to SFA or total fat consumption.
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Affiliation(s)
- Mariel Pressler
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Julie Devinsky
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Miranda Duster
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Joyce H. Lee
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Courtney S. Glick
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Samson Wiener
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Juliana Laze
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | - Daniel Friedman
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
| | | | - Orrin Devinsky
- Department of Neurology, NYU Grossman School of Medicine, New York, NY, United States
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Beck EA, Healey HM, Small CM, Currey MC, Desvignes T, Cresko WA, Postlethwait JH. Advancing human disease research with fish evolutionary mutant models. Trends Genet 2022; 38:22-44. [PMID: 34334238 PMCID: PMC8678158 DOI: 10.1016/j.tig.2021.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 06/28/2021] [Accepted: 07/01/2021] [Indexed: 01/03/2023]
Abstract
Model organism research is essential to understand disease mechanisms. However, laboratory-induced genetic models can lack genetic variation and often fail to mimic the spectrum of disease severity. Evolutionary mutant models (EMMs) are species with evolved phenotypes that mimic human disease. EMMs complement traditional laboratory models by providing unique avenues to study gene-by-environment interactions, modular mutations in noncoding regions, and their evolved compensations. EMMs have improved our understanding of complex diseases, including cancer, diabetes, and aging, and illuminated mechanisms in many organs. Rapid advancements of sequencing and genome-editing technologies have catapulted the utility of EMMs, particularly in fish. Fish are the most diverse group of vertebrates, exhibiting a kaleidoscope of specialized phenotypes, many that would be pathogenic in humans but are adaptive in the species' specialized habitat. Importantly, evolved compensations can suggest avenues for novel disease therapies. This review summarizes current research using fish EMMs to advance our understanding of human disease.
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Affiliation(s)
- Emily A Beck
- Data Science, University of Oregon, Eugene, OR 97403, USA; Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA.
| | - Hope M Healey
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
| | - Clayton M Small
- Data Science, University of Oregon, Eugene, OR 97403, USA; Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
| | - Mark C Currey
- Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
| | - Thomas Desvignes
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | - William A Cresko
- Data Science, University of Oregon, Eugene, OR 97403, USA; Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
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29
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Yang Y, Chen Z, Zhao X, Xie H, Du L, Gao H, Xie C. Mechanisms of Kaempferol in the treatment of diabetes: A comprehensive and latest review. Front Endocrinol (Lausanne) 2022; 13:990299. [PMID: 36157449 PMCID: PMC9490412 DOI: 10.3389/fendo.2022.990299] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/17/2022] [Indexed: 01/07/2023] Open
Abstract
Obesity-insulin resistance-β-cells apoptosis" is an important trilogy of the pathogenesis of type 2 diabetes. With the global pandemic of obesity and diabetes, continuous research and development of new drugs focuses on the prevention of the pathological progress of these diseases. According to a recent study, the natural product kaempferol has excellent antidiabetic effects. Therefore, this review comprehensively summarized the frontier studies and pharmacological mechanisms of kaempferol in the treatment of diabetes. The successful research and development of kaempferol may yield a significant leap in the treatment of diabetes and its complications.
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Affiliation(s)
- Yan Yang
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Zhengtao Chen
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyan Zhao
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Hongyan Xie
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Lian Du
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hong Gao
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hong Gao, ; Chunguang Xie,
| | - Chunguang Xie
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hong Gao, ; Chunguang Xie,
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30
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Treuth MS, Poirier L, Pardilla M, Redmond L, Gittelsohn J. Physical Activity Levels in Six Native American Communities Using the FITT-VP Approach. TRANSLATIONAL JOURNAL OF THE AMERICAN COLLEGE OF SPORTS MEDICINE 2022. [DOI: 10.1249/tjx.0000000000000135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Garvey WT. Is Obesity/Adiposity-Based Chronic Disease Curable: The Set Point Theory, the Environment, and Second Generation Medications. Endocr Pract 2021; 28:214-222. [PMID: 34823000 DOI: 10.1016/j.eprac.2021.11.082] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/16/2021] [Accepted: 11/16/2021] [Indexed: 12/22/2022]
Abstract
Adiposity-Based Chronic Disease (ABCD) is a chronic disease and requires life-long treatment and follow-up. Obesity protects obesity through altered regulation of caloric intake and set point mechanisms that maintains a high equilibrium body weight. Lifestyle interventions and obesity medications do not permanently alter the set point which often makes weight loss achieved by lifestyle short-lived and operates to drive weight regain once medications are discontinued. Bariatric surgery procedures can alter appetite and lower the "set point" for equilibrium body weight via unknown mechanisms. However, few patients attain ideal body weight following surgery, many regain weight, and all require long-term follow-up for the disease. The excess adiposity of ABCD gives rise to complications that impair health and confer morbidity and mortality; however, the genetic risks and potential interactions between genes and environment that give rise to complications also cannot be eliminated. The equilibrium body weight around which set point mechanisms operate can be modified by environment, which underscores the importance of a less obesogenic environment for prevention and treatment of ABCD on a population basis. If ABCD will eventually be curable, this will depend on a clear understanding of the molecular mechanisms that determine the set point regulation of body weight, and an ability to permanently modulate the set point to oscillate around and a lean body mass. The conceptualization of ABCD as a chronic disease, however, does present us with opportunities for primary, secondary, and tertiary prevention to avert disease progression. For tertiary care, the advent of new, more effective, second-generation obesity medications will allow clinicians to treat-to-target via active management of body weight into a target range that will ameliorate specific complications.
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Affiliation(s)
- W Timothy Garvey
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, Alabama, 35294-3360, USA.
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32
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Sfikas G, Psallas M, Koumaras C, Imprialos K, Perdikakis E, Doumas M, Giouleme O, Karagiannis A, Athyros VG. Prevalence, Diagnosis, and Treatment with 3 Different Statins of Non-alcoholic Fatty Liver Disease/Non-alcoholic Steatohepatitis in Military Personnel. Do Genetics Play a Role? Curr Vasc Pharmacol 2021; 19:572-581. [DOI: 10.2174/1570161118666201015152921] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 12/18/2022]
Abstract
Background:
Non-alcoholic fatty liver disease (NAFLD) and its severe form, non-alcoholic
steatohepatitis (NASH), are major health problems worldwide. Genetics may play a role in
the pathogenesis of NAFLD/NASH.
Aim:
To investigate the prevalence of NAFLD/NASH in 5,400 military personnel and evaluate
the effect of treatment with 3 statins on NAFLD/NASH using 2 non-invasive scores [NAFLD Activity
Score (NAS); Fibrosis-4 score (FIB-4)].
Methods:
During the mandatory annual medical check-up, military personnel underwent a clinical
and laboratory evaluation. Participants with NAFLD/NASH were randomized into 4 groups
(n=151 each): diet-exercise, atorvastatin, rosuvastatin, or pitavastatin for 1 year (i.e., until the next
routine evaluation).
Results:
From all the participants, 613 had NAFLD/NASH (prevalence 11.3 vs 39.8% in the general
population, p<0.001), and a total of 604 consented to participate in the study. After a year of
treatment, the diet-exercise group showed no significant changes in both scores (NAS 4.98 baseline
vs. 5.62, p=0.07; FIB-4 3.42 vs. 3.52, p=0.7). For the atorvastatin group, both scores were reduced
(NAS 4.97 vs 1.95, p<0.001, FIB-4 3.56 vs 0.83, p<0.001), for rosuvastatin (NAS 5.55 vs
1.81, p<0.001, FIB-4 3.61 vs 0.79, p<0.001), and for pitavastatin (NAS 4.89 vs 1.99, p<0.001,
FIB-4 3.78 vs 0.87, p<0.001).
Conclusions:
Atorvastatin, rosuvastatin, and pitavastatin have a beneficial and safe effect in
NAFLD/NASH patients as recorded by the improvement in the NAS (representing NAFLD activity)
and FIB-4 (representing liver fibrosis) scores. Since both those with and without NAFLD/-
NASH shared several baseline characteristics, genetics may play a role in the pathogenesis of
NAFLD/NASH and its treatment with statins.
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Affiliation(s)
- Georgios Sfikas
- 1st Department of Internal Medicine, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Michael Psallas
- 1st Department of Internal Medicine, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Charalambos Koumaras
- 1st Department of Internal Medicine, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Konstantinos Imprialos
- 2nd Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University School of Medicine, Thessaloniki, Greece
| | - Evangelos Perdikakis
- Department of Ultrasonography, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Michael Doumas
- 2nd Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University School of Medicine, Thessaloniki, Greece
| | - Olga Giouleme
- 2nd Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University School of Medicine, Thessaloniki, Greece
| | - Asterios Karagiannis
- 2nd Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University School of Medicine, Thessaloniki, Greece
| | - Vasilios G. Athyros
- 2nd Propedeutic Department of Internal Medicine, Hippocration Hospital, Aristotle University School of Medicine, Thessaloniki, Greece
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Sirugo G, Tishkoff SA, Williams SM. The quagmire of race, genetic ancestry, and health disparities. J Clin Invest 2021; 131:e150255. [PMID: 34060479 DOI: 10.1172/jci150255] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Affiliation(s)
- Giorgio Sirugo
- Institute of Systems Pharmacology and Translational Therapeutics.,Division of Translational Medicine and Human Genetics, and
| | - Sarah A Tishkoff
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Department of Biology, School of Arts and Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Scott M Williams
- Departments of Population and Quantitative Health Sciences, and Genetics and Genome Sciences, Cleveland Institute for Computational Biology, Case Western Reserve University, Cleveland, Ohio, USA
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Taylor R. Type 2 diabetes and remission: practical management guided by pathophysiology. J Intern Med 2021; 289:754-770. [PMID: 33289165 PMCID: PMC8247294 DOI: 10.1111/joim.13214] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/10/2020] [Accepted: 09/15/2020] [Indexed: 12/13/2022]
Abstract
The twin cycle hypothesis postulated that type 2 diabetes was a result of excess liver fat causing excess supply of fat to the pancreas with resulting dysfunction of both organs. If this was so, the condition should be able to be returned to normal by calorie restriction. The Counterpoint study tested this prediction in short-duration type 2 diabetes and showed that liver glucose handling returned to normal within 7 days and that beta-cell function returned close to normal over 8 weeks. Subsequent studies have demonstrated the durability of remission from type 2 diabetes. Remarkably, during the first 12 months of remission, the maximum functional beta-cell mass returns completely to normal and remains so for at least 24 months, consistent with regain of insulin secretory function of beta cells which had dedifferentiated in the face of chronic nutrient oversupply. The likelihood of achieving remission after 15% weight loss has been shown to be mainly determined by the duration of diabetes, with responders having better beta-cell function at baseline. Remission is independent of BMI, underscoring the personal fat threshold concept that type 2 diabetes develops when an individual acquires more fat than can be individually tolerated even at a BMI which in the nonobese range. Observations on people of South Asian or Afro-American ethnicity confirm that substantial weight loss achieves remission in the same way as in the largely White Europeans studied in detail. Diagnosis of type 2 diabetes can now be regarded as an urgent signal that weight loss must be achieved to avoid a progressive decline of health.
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Affiliation(s)
- Roy Taylor
- Magnetic Resonance CentreInstitute of Cellular MedicineNewcastle UniversityNewcastleUK
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35
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Owen M, Westerhaus M, Finnegan A, Surapaneni L, LaDuke W. Working upstream. Lancet 2021; 397:1803-1804. [PMID: 33992136 PMCID: PMC9752786 DOI: 10.1016/s0140-6736(21)00923-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Mary Owen
- Center of American Indian and Minority Health, University of Minnesota, Duluth, MN, USA
| | - Michael Westerhaus
- Global Medicine, University of Minnesota, Twin Cities, MN, USA; Center for International Health, St Paul, MN 55104, USA.
| | | | - Laalitha Surapaneni
- Division of General Internal Medicine, University of Minnesota, Twin Cities, MN, USA
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Amutah C, Greenidge K, Mante A, Munyikwa M, Surya SL, Higginbotham E, Jones DS, Lavizzo-Mourey R, Roberts D, Tsai J, Aysola J. Misrepresenting Race - The Role of Medical Schools in Propagating Physician Bias. N Engl J Med 2021; 384:872-878. [PMID: 33406326 DOI: 10.1056/nejmms2025768] [Citation(s) in RCA: 159] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Christina Amutah
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Kaliya Greenidge
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Adjoa Mante
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Michelle Munyikwa
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Sanjna L Surya
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Eve Higginbotham
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - David S Jones
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Risa Lavizzo-Mourey
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Dorothy Roberts
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Jennifer Tsai
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
| | - Jaya Aysola
- From the Perelman School of Medicine (C.A., A.M., M.M., S.L.S., E.H., R.L.-M., J.A.), School of Arts and Sciences (K.G., D.R.), the Penn Medicine Center for Health Equity Advancement (K.G., J.A.), the Leonard Davis Institute of Health Economics (E.H., R.L.-M., J.A.), Carey Law School (D.R.), and the Penn Program on Race, Science, and Society (D.R.), University of Pennsylvania, Philadelphia; Harvard Medical School, Boston (D.S.J.); the Department of Emergency Medicine, Yale School of Medicine, New Haven, CT (J.T.); and the Warren Alpert Medical School of Brown University, Providence, RI (J.T.)
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Genetic polymorphisms associated with high-altitude adaptation in a Baltí population. Meta Gene 2021. [DOI: 10.1016/j.mgene.2020.100836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Nagayama C, Burns SF, Stensel DJ, Thackray AE, Takahashi M, Miyashita M. Effects of a single bout of walking on postprandial triglycerides in men of Chinese, European and Japanese descent: a multisite randomised crossover trial. BMJ Open Sport Exerc Med 2020; 6:e000928. [PMID: 33376598 PMCID: PMC7745685 DOI: 10.1136/bmjsem-2020-000928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2020] [Indexed: 01/01/2023] Open
Abstract
Introduction Elevated non-fasting triglyceride (TG) concentrations are a risk factor for cardiovascular diseases but can be reduced after acute exercise. Ethnic-based differences in the magnitude of postprandial lipaemia and the extent that acute exercise reduces postprandial TG are poorly characterised across some ethnicities including those of East Asian origin. This paper describes the protocol of a multisite randomised crossover study comparing the effect of acute walking on postprandial TG in two groups of East Asian men with European men. Methods and analysis Twenty Japanese, 20 Singaporean Chinese and 20 white British healthy men (21–39 years) recruited from Japan, Singapore and the UK, respectively, will complete two, 2-day trials. Fasted and postprandial venous blood samples and arterial blood pressure measurements will be taken over 6 hours the day after either: (1) 60-min treadmill walking; or (2) a rest day of normal living. The primary outcome is the difference in postprandial TG among ethnic groups after rest and walking. Secondary outcomes include cholesterol, glucose, insulin, ketone bodies, preheparin lipoprotein lipase, C-reactive protein and systolic/diastolic blood pressure. Ethics and dissemination The study was approved by the Ethics Review Committee on Research with Human Subjects of Waseda University and the Nanyang Technological University Institutional Review Board. Relevant approval will be obtained from the UK site. Research findings will be disseminated through peer-reviewed journal publication and health conferences. Trial registration number UMIN000038625.
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Affiliation(s)
- Chihiro Nagayama
- Graduate School of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - Stephen F Burns
- Physical Education and Sports Science Academic Group, National Institute of Education, Nanyang Technological University, Singapore
| | - David J Stensel
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University Hospitals of Leicester NHS and University of Leicester, Leicester, UK
| | - Alice E Thackray
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.,National Institute for Health Research (NIHR) Leicester Biomedical Research Centre, University Hospitals of Leicester NHS and University of Leicester, Leicester, UK
| | - Masaki Takahashi
- Comprehensive Research Organization, Waseda University, Singapore
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Lichtash C, Fung J, Ostoich KC, Ramos M. Therapeutic use of intermittent fasting and ketogenic diet as an alternative treatment for type 2 diabetes in a normal weight woman: a 14-month case study. BMJ Case Rep 2020; 13:13/7/e234223. [PMID: 32641437 PMCID: PMC7342268 DOI: 10.1136/bcr-2019-234223] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
This case demonstrates the effective and sustainable use of intermittent fasting (IF) and ketogenic diet (KD) in a normal weight patient with type 2 diabetes, who did not attain glycaemic control with a standard care approach. A 57-year-old woman with type 2 diabetes treated with metformin and strict adherence to a standard diabetic diet presented with a haemoglobin A1c (HbA1c) of 9.3%. Within 4 months of transitioning to KD, combined with IF, she achieved glycaemic control off pharmacotherapy, with HbA1c of 6.4. IF regimens started as 24 hours three times per week, followed by 42 hours three times per week, then 42 hours two times per week and 16 hours once per week. A maintenance phase was then begun at 8 months; IF was reduced to 16 hours per day, with 24 hours three times per month, and metformin was restarted. At 14 months, HbA1c reached 5.8%, and body mass index was minimally changed.
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Affiliation(s)
- Charlene Lichtash
- Department of Medicine, Cedars-Sinai Medical Center, Beverly Hills, California, USA
| | - Jason Fung
- Department of Medicine, Scarborough Health Network, Scarborough, Ontario, Canada
| | | | - Megan Ramos
- Institute of Kidney Life Science Technologies, Scarborough, Ontario, Canada
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40
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Martínez A, Anduro I, Bojorquez I. The biohabitus of scarcity: bio-social dispositions and the "obesity epidemic" in Mexico. SOCIOLOGY OF HEALTH & ILLNESS 2020; 42:1095-1107. [PMID: 32163189 DOI: 10.1111/1467-9566.13080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this article, we explore the potential of Warin et al.'s concept of biohabitus (a set of embodied biological and social dispositions) as a conceptual tool for the understanding of mechanisms behind the "obesity epidemic." Elaborating on this concept, we argue that a context of food scarcity gives rise to a biohabitus geared to energy-saving, expressed in both biological (the thrifty genotype/phenotype hypotheses) and symbolic dispositions (Bourdieu's "taste of necessity"), and the interaction between this type of biohabitus and changes in the food-related environment results in increased body mass index. We exemplify the use of this framework by applying it to the case of Mexico, a middle-income Latin American country with one of the highest prevalences of obesity worldwide. The example shows how the concept of biohabitus can help researchers move beyond disciplinary explanations, towards a more complex understanding of the conjunction of social and biological processes that result in differential patterns of health and disease.
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Affiliation(s)
| | - Iván Anduro
- Centro de Investigación en Alimentación y Desarrollo, Hermosillo, México
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Lowe J, Ke C, Singh K, Gobin R, Lebovic G, Ostrow B. Development and Validation of a New Diabetes Risk Score in Guyana. Diabetes Ther 2020; 11:873-883. [PMID: 32072429 PMCID: PMC7136361 DOI: 10.1007/s13300-020-00775-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION We present a new diabetes risk score developed and validated in a multi-ethnic population in Guyana, South America. Measurement of in-country diabetes prevalence is a vital epidemiologic tool to combat the pandemic. It is believed that for every person diagnosed with type 2 diabetes there is another undiagnosed. The International Diabetes Federation (IDF) recommends a two-step detection programme using a risk score questionnaire to identify high-risk individuals followed by glycaemic measure. METHODS Data on 798 persons from the 2016 STEPwise Approach to Chronic Disease Risk Factor Surveillance (STEPS) were used to correlate responses to 36 questions with glycated haemoglobin (HbA1C) and fasting plasma glucose (FPG) results. Bootstrapping was used to internally validate the derived seven-variable model. This model with the addition of family history questions was tested in a convenience sample of 659 Guyanese adults and externally validated in a cohort of another 528. RESULTS An 8-item Guyana Diabetes Risk Score (GDRS) was derived. The final model performed with an area under the curve (AUC) of 0.812 CONCLUSIONS: The validated eight-item Guyana Diabetes Risk Score will be extremely useful in identifying individuals at high risk of having diabetes in Caribbean, Black or East Indian populations.
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Affiliation(s)
- Julia Lowe
- Division of Endocrinology and Metabolism, Department of Medicine, University of Toronto, Toronto, Canada.
| | - Calvin Ke
- Division of Endocrinology and Metabolism, Department of Medicine, University of Toronto, Toronto, Canada
| | - Kavita Singh
- Chronic Diseases Unit, Ministry of Public Health, Lot 1 Brickdam St., Georgetown, Guyana
| | - Reeta Gobin
- Master of Public Health Programme, University of Guyana, Turkeyan Campus, Georgetown, Guyana
| | - Gerald Lebovic
- Applied Health Research Centre, St. Michael's Hospital, Toronto, Canada
| | - Brian Ostrow
- Department of Surgery, University of Toronto, Toronto, Canada
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Mendoza-Caamal EC, Barajas-Olmos F, García-Ortiz H, Cicerón-Arellano I, Martínez-Hernández A, Córdova EJ, Esparza-Aguilar M, Contreras-Cubas C, Centeno-Cruz F, Cid-Soto M, Morales-Marín ME, Reséndiz-Rodríguez A, Jiménez-Ruiz JL, Salas-Martínez MG, Saldaña-Alvarez Y, Mirzaeicheshmeh E, Rojas-Martínez MR, Orozco L. Metabolic syndrome in indigenous communities in Mexico: a descriptive and cross-sectional study. BMC Public Health 2020; 20:339. [PMID: 32183766 PMCID: PMC7076922 DOI: 10.1186/s12889-020-8378-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 02/20/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND An Amerindian genetic background could play an important role in susceptibility to metabolic diseases, which have alarmingly increased in recent decades. Mexico has one of the highest prevalences of metabolic disease worldwide. The purpose of this study was to determine the prevalence of metabolic syndrome and its components in a population with high Amerindian ancestry. METHODS We performed a descriptive, quantitative, and analytical cross-sectional study of 2596 adult indigenous volunteers from 60 different ethnic groups. Metabolic syndrome and its components were evaluated using the American Heart Association/National Heart, Lung, and Blood Institute Scientific Statement criteria. RESULTS The overall prevalence of metabolic syndrome in the indigenous Mexican population was 50.3%. Although females had a higher prevalence than males (55.6% vs. 38.2%), the males presented with combinations of metabolic syndrome components that confer a higher risk of cardiovascular disease. The most frequent metabolic syndrome component in both genders was low HDL-cholesterol levels (75.8%). Central obesity was the second most frequent component in females (61%), though it had a low prevalence in males (16.5%). The overall prevalence of elevated blood pressure was 42.7% and was higher in males than females (48.8 vs. 40%). We found no gender differences in the overall prevalence of elevated triglycerides (56.7%) or fasting glucose (27.9%). CONCLUSIONS We documented that individuals with Amerindian ancestry have a high prevalence of metabolic syndrome. Health policies are needed to control the development of metabolic disorders in a population with high genetic risk.
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Affiliation(s)
- Elvia Cristina Mendoza-Caamal
- Clinical Area, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Francisco Barajas-Olmos
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Humberto García-Ortiz
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Isabel Cicerón-Arellano
- Clinical Area, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Angélica Martínez-Hernández
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Emilio J Córdova
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Marcelino Esparza-Aguilar
- Epidemiology Research Department, Instituto Nacional de Pediatría, Insurgentes Sur 3700, Letra C, Colonia Insurgentes Cuicuilco, Delegación Coyoacán, C.P. 04530, Ciudad de México, Mexico
| | - Cecilia Contreras-Cubas
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Federico Centeno-Cruz
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Miguel Cid-Soto
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Mirna Edith Morales-Marín
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Adriana Reséndiz-Rodríguez
- Clinical Area, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Juan Luis Jiménez-Ruiz
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - María Guadalupe Salas-Martínez
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Yolanda Saldaña-Alvarez
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - Elaheh Mirzaeicheshmeh
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico
| | - María Rosalba Rojas-Martínez
- Public Health Research Center, Instituto Nacional de Salud Pública, 7a Cerrada de Fray Pedro de Gante 50, Colonia Sección XVI, Delegación Tlalpan, C.P. 14080, Ciudad de México, Mexico
| | - Lorena Orozco
- Immunogenomics and Metabolic Disease Laboratory, Instituto Nacional de Medicina Genómica, SS, Periférico Sur 4809, Colonia Arenal Tepepan, Delegación Tlalpan, C.P. 14610, Ciudad de México, Mexico.
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Baumhofer NK, Panapasa SV, Francis Cook E, Roberto CA, Williams DR. Sociodemographic factors influencing island foods consumption in the Pacific Islander Health Study. ETHNICITY & HEALTH 2020; 25:305-321. [PMID: 29284279 DOI: 10.1080/13557858.2017.1418300] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 12/06/2017] [Indexed: 06/07/2023]
Abstract
Objectives: Pacific Islander Americans are a small, but quickly growing population that experiences alarming disparities in obesity and obesity-related chronic illnesses influenced by dietary patterns. This population also has a unique culinary heritage including traditional foods and more contemporary imports such as tinned meats and refined carbohydrates. This analysis is a novel attempt to understand the sociodemographic factors influencing island foods consumption.Design: A sample of 240 Samoan and Tongan adults in California from the Pacific Islander Health Study was used. Following univariate and bivariate analyses, a series of four multivariable regression models were created to predict past week frequency of island foods consumption after sequential adjustment for demographic, socioeconomic, and cultural covariates.Results: Participants reported consuming island foods an average of 2.93 times in the previous week, with the largest proportion of participants (20.42%) reporting eating island foods 6 or more times. Age and Samoan ethnicity were initially significant, positive predictors of island foods consumption, but their effect was attenuated after addition of cultural covariates. With the third model that adjusted for birthplace, financial insecurity and Tongan birthplace were positive predictors. Both lost significance in the fourth and final model upon addition of cultural affinity, which was positively associated with island foods.Conclusion: Understanding how sociodemographic factors are associated with island foods consumption is a first step in understanding the broad way in which an ethnically specific dietary pattern may be associated with obesity-related chronic illness risk among Pacific Islander Americans.
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Affiliation(s)
- N Kau'i Baumhofer
- Department of Native Hawaiian Health, University of Hawai'i John A. Burns School of Medicine, Honolulu, HI, USA
- Department of Social & Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Sela V Panapasa
- Institute for Social Research, University of Michigan, 5068 Institute for Social Research, Ann Arbor, MI, USA
| | - E Francis Cook
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Christina A Roberto
- Department of Medical Ethics and Health Policy, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - David R Williams
- Department of Social & Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Aasbjerg K, Nørgaard CH, Vestergaard N, Søgaard P, Køber L, Weeke P, Gislason G, Torp-Pedersen C. Risk of diabetes among related and unrelated family members. Diabetes Res Clin Pract 2020; 160:107997. [PMID: 31901471 DOI: 10.1016/j.diabres.2019.107997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/13/2019] [Accepted: 12/30/2019] [Indexed: 01/07/2023]
Abstract
AIMS The aim was to explore familial aggregation of diabetes in genetically related and unrelated individuals. METHODS We included citizens from Danish nationwide registries between 1995 and 2018 and calculated rate ratios (RR) of diabetes based on family relation using Poisson regression. RESULTS Of 7.3 million individuals eligible for inclusion, we identified 343,237 (4.7%) with diabetes. The RR of diabetes was 2.02 (95% CI: 1.99-2.05; p < 0.0001) if any relative had diabetes, 1.79 (95% CI: 1.76-1.83) if a father had diabetes, and 2.06 (95% CI: 2.02-2.10) if a mother had diabetes. If both parents had diabetes, the RR was 3.40 (95% CI: 3.24-3.56). Among full siblings, the RR for developing diabetes was 2.77 (95% CI: 2.71-2.84) and 5.76 (95% CI: 5.00-6.63) for twins. For second-degree relatives, half siblings with a common mother had a RR of 2.35 (95% CI: 2.15-2.56), and with a common father 1.99 (95% CI: 1.81-2.17). Furthermore, the RR was 1.60 (95% CI: 1.56-1.64) if a wife had diabetes, and 1.41 (95% CI: 1.38-1.44) if a husband had diabetes. A subgroup analysis of individuals receiving insulin only treatment (N = 23,054) demonstrated a similar risk pattern, although with slightly higher risk estimates. CONCLUSIONS/INTERPRETATION Family aggregation of diabetes is associated with genetic disposition with maternal status being the predominant factor. Furthermore, we observed increased risk of diabetes in second-degree relatives, and between unrelated spouses, indicating that environmental factors influence diabetes risk substantially.
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Affiliation(s)
- Kristian Aasbjerg
- Department of Ophthalmology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark; Aalborg University Hospital, Unit of Epidemiology and Biostatistics, Hobrovej 18-22, PO-box 365, DK-9000 Aalborg, Denmark.
| | - Caroline Holm Nørgaard
- Department of Cardiology and Clinical Research, Nordsjællands University Hospital, Hillerød, Denmark
| | - Nanna Vestergaard
- Department of Ophthalmology, Aarhus University Hospital, DK-8200 Aarhus N, Denmark; Aalborg University Hospital, Unit of Epidemiology and Biostatistics, Hobrovej 18-22, PO-box 365, DK-9000 Aalborg, Denmark
| | - Peter Søgaard
- Department of Cardiology, Aalborg University Hospital, DK-9000 Aalborg, Denmark
| | - Lars Køber
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Peter Weeke
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Gunnar Gislason
- Copenhagen University Hospital Herlev and Gentofte, Department of Cardiology, Kildegårdsvej 28, DK-2900 Hellerup, Denmark; The Danish Heart Foundation, Vognmagergade 7, 1120 Copenhagen, Denmark; The National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - Christian Torp-Pedersen
- Department of Cardiology and Clinical Research, Nordsjællands University Hospital, Hillerød, Denmark
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Harris-Hayes M, Schootman M, Schootman JC, Hastings MK. The Role of Physical Therapists in Fighting the Type 2 Diabetes Epidemic. J Orthop Sports Phys Ther 2020; 50:5-16. [PMID: 31775555 PMCID: PMC7069691 DOI: 10.2519/jospt.2020.9154] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND In 2014, the total prevalence of diabetes was estimated to be 422 million people worldwide. Due to the aging population and continued increase in obesity rates, the prevalence is expected to rise to 592 million by 2035. Diabetes can lead to several complications, including cardiovascular disease, stroke, peripheral arterial disease, nephropathy, neuropathy, retinopathy, lower extremity amputation, and musculoskeletal impairments. CLINICAL QUESTION Up to 80% of patients referred for outpatient physical therapy have diabetes or are at risk for diabetes, providing an opportunity for physical therapists to intervene. Therefore, we asked, "What is the role of physical therapists in fighting the diabetes epidemic?" KEY RESULTS Physical therapists commonly prescribe physical activity for the treatment of diabetes and other chronic diseases, such as cardiovascular disease and osteoarthritis. Physical therapists may also screen for risk factors for diabetes and diabetes-related complications and modify traditional musculoskeletal exercise prescription accordingly. Physical therapists must advocate for regular physical activity as a key component of the treatment of chronic diseases in all patient interactions. CLINICAL APPLICATION This commentary (1) describes the diabetes epidemic and the health impact of diabetes and diabetes-related complications, (2) highlights the physical therapist's role as front-line provider, and (3) provides recommendations for physical therapists in screening for diabetes risk factors and diabetes-related complications and considerations for patient management. We focus on type 2 diabetes. J Orthop Sports Phys Ther 2020;50(1):5-16. Epub 28 Nov 2019. doi:10.2519/jospt.2020.9154.
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Abstract
Precision medicine is a new health care concept intended to hasten progress toward individualized treatment and, in so doing, to improve everyone's opportunity to enjoy good health. Yet, this concept pays scant attention to opportunities for change in the social determinants that are the major drivers of health. Precision medicine research is likely to generate improvements in medical care but may have the unintended consequence of worsening existing disparities in health care access. For prevention, precision medicine emphasizes comprehensive risk prediction and individual efforts to accomplish risk reduction. The application of the precision medicine vision to type 2 diabetes, a growing threat to population health, fails to acknowledge collective responsibility for a health-promoting society.
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Affiliation(s)
- Wylie Burke
- Department of Bioethics and Humanities, University of Washington, Seattle, WA
| | | | - David Schenck
- Ethics Program, Medical University of South Carolina, Charleston, SC
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Dietary habits contribute to define the risk of type 2 diabetes in humans. Clin Nutr ESPEN 2019; 34:8-17. [DOI: 10.1016/j.clnesp.2019.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 08/02/2019] [Indexed: 12/25/2022]
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Staimez LR, Deepa M, Ali MK, Mohan V, Hanson RL, Narayan KMV. Tale of two Indians: Heterogeneity in type 2 diabetes pathophysiology. Diabetes Metab Res Rev 2019; 35:e3192. [PMID: 31145829 PMCID: PMC6834872 DOI: 10.1002/dmrr.3192] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 05/10/2019] [Accepted: 05/18/2019] [Indexed: 12/13/2022]
Abstract
AIMS Type 2 diabetes is a heterogeneous disease and may manifest from multiple disease pathways. We examined insulin secretion and insulin resistance across two ethnicities with particularly high risk for diabetes yet with widely different distributions of weight class. MATERIALS AND METHODS In this population-based, cross-sectional study, Pima Indians from Southwestern United States (n = 865) and Asian Indians from Chennai, India (n = 2374) had a 75-g oral glucose tolerance test. We analysed differences in plasma glucose, plasma insulin, insulin resistance (HOMA-IR), and insulin secretion (ΔI0-30 /ΔG0-30 ) across categories of body mass index (BMI) and glycemic status per American Diabetes Association criteria. RESULTS Pima Indians were younger (mean 27.4 ± SD 6.6, Asian: 33.9 ± 6.7 years) and had higher BMI (33.6 ± 8.1, Asian: 25.7 ± 4.9 kg/m2 ). Among normal weight participants (mean BMI: Pima 22.4 SE 0.2; Asian 22.2 SE 0.06 kg/m2 ), fasting glucose was higher in Asian Indians (5.2 vs Pima: 4.8 mmol/L, P = .003), adjusted for age and sex. Pima Indians were three times as insulin resistant as Asian Indians (HOMA-IR: 7.7 SE 0.1, Asian: 2.5 SE 0.07), while Asian Indians had three times less insulin secretion (Pima: 2.8 SE 1.0 vs Asian: 0.9 SE 1.0 pmol/mmol), a pattern evident across age, BMI, and glycemic strata. CONCLUSIONS Metabolic differences between Pima and Asian Indians suggest heterogeneous pathways of type 2 diabetes in the early natural history of disease, with emphasis of insulin resistance in Pima Indians and emphasis of poor insulin secretion in Asian Indians.
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Affiliation(s)
- Lisa R Staimez
- Emory Global Diabetes Research Center, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Mohan Deepa
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, Chennai, India
| | - Mohammed K Ali
- Emory Global Diabetes Research Center, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Viswanathan Mohan
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, Chennai, India
| | - Robert L Hanson
- Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Disease, Phoenix, AZ, USA
| | - K M Venkat Narayan
- Emory Global Diabetes Research Center, Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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Baedke J, Nieves Delgado A. Race and nutrition in the New World: Colonial shadows in the age of epigenetics. STUDIES IN HISTORY AND PHILOSOPHY OF BIOLOGICAL AND BIOMEDICAL SCIENCES 2019; 76:101175. [PMID: 30885596 DOI: 10.1016/j.shpsc.2019.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 01/29/2019] [Accepted: 03/05/2019] [Indexed: 05/22/2023]
Abstract
This paper addresses historical dimensions of epigenetic studies on human populations. We show that postgenomic research on health disparities in Latin America reintroduces old colonial views about the relations between race, environment, and social status. This especially refers to the idea - common in colonial humoralism and epigenetics - that different types of bodies are in balance and closely linked with particular local environments and lifestyles. These social differences become embodied as physiological and health differences. By comparing Spanish chronicles of the New World with recent epidemiological narratives on Mexican populations in social epigenetics (especially on obesity), we identify four characteristics that both share in distinguishing races, such as indigenous or mestizos from Spaniards or non-Mexicans: (i) Race is not intrinsic to bodies but emerges as a particular homeostatic body-environment relation; (ii) the stability of one's race is warranted through the stability of one's local environment and lifestyle, especially nutrition; (iii) every race faces specific life challenges in a local environment to maintain its health; and (iv) every race shows a unique social status that is closely linked to its biological status (e.g., disease susceptibility). Based on these similarities, we argue that currently in Latin America the field of epigenetics appears on the scene with a worrisome colonial shadow. It reintroduces long forgotten exclusionary and stereotypic perspectives on indigenous and mestizos, and biologizes as well as racializes social-cultural differences among human groups.
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Affiliation(s)
- Jan Baedke
- Department of Philosophy I, Ruhr University Bochum, Universitätsstr. 150, 44801, Bochum, Germany; Centre for Anthropological Knowledge in Scientific and Technological Cultures (CAST), Ruhr University Bochum, Universitätsstr. 150, 44801, Bochum, Germany.
| | - Abigail Nieves Delgado
- Department of Philosophy I, Ruhr University Bochum, Universitätsstr. 150, 44801, Bochum, Germany; Centre for Anthropological Knowledge in Scientific and Technological Cultures (CAST), Ruhr University Bochum, Universitätsstr. 150, 44801, Bochum, Germany.
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Thomas DD, Corkey BE, Istfan NW, Apovian CM. Hyperinsulinemia: An Early Indicator of Metabolic Dysfunction. J Endocr Soc 2019; 3:1727-1747. [PMID: 31528832 PMCID: PMC6735759 DOI: 10.1210/js.2019-00065] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 07/18/2019] [Indexed: 02/06/2023] Open
Abstract
Hyperinsulinemia is strongly associated with type 2 diabetes. Racial and ethnic minority populations are disproportionately affected by diabetes and obesity-related complications. This mini-review provides an overview of the genetic and environmental factors associated with hyperinsulinemia with a focus on racial and ethnic differences and its metabolic consequences. The data used in this narrative review were collected through research in PubMed and reference review of relevant retrieved articles. Insulin secretion and clearance are regulated processes that influence the development and progression of hyperinsulinemia. Environmental, genetic, and dietary factors are associated with hyperinsulinemia. Certain pharmacotherapies for obesity and bariatric surgery are effective at mitigating hyperinsulinemia and are associated with improved metabolic health. Hyperinsulinemia is associated with many environmental and genetic factors that interact with a wide network of hormones. Recent studies have advanced our understanding of the factors affecting insulin secretion and clearance. Further basic and translational work on hyperinsulinemia may allow for earlier and more personalized treatments for obesity and metabolic diseases.
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Affiliation(s)
- Dylan D Thomas
- Department of Medicine, Section of Endocrinology, Diabetes, Nutrition and Weight Management, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts
| | - Barbara E Corkey
- Department of Medicine, Section of Endocrinology, Diabetes, Nutrition and Weight Management, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts
| | - Nawfal W Istfan
- Department of Medicine, Section of Endocrinology, Diabetes, Nutrition and Weight Management, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts
| | - Caroline M Apovian
- Department of Medicine, Section of Endocrinology, Diabetes, Nutrition and Weight Management, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts
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