β Cell dysfunction during progression of metabolic syndrome to type 2 diabetes

In a society where physical activity is limited and food supply is abundant, metabolic diseases are becoming a serious epidemic. Metabolic syndrome (MetS) represents a cluster of metabolically related symptoms such as obesity, hypertension, dyslipidemia, and carbohydrate intolerance, and significantly increases type 2 diabetes mellitus risk. Insulin resistance and hyperinsulinemia are consistent characteristics of MetS, but which of these features is the initiating insult is still widely debated. Regardless, both of these conditions trigger adverse responses from the pancreatic β cell, which is responsible for producing, storing, and releasing insulin to maintain glucose homeostasis. The observation that the degree of β cell dysfunction correlates with the severity of MetS highlights the need to better understand β cell dysfunction in the development of MetS. This Review focuses on the current understanding from rodent and human studies of the progression of β cell responses during the development of MetS, as well as recent findings addressing the complexity of β cell identity and heterogeneity within the islet during disease progression. The differential responses observed in β cells together with the heterogeneity in disease phenotypes within the patient population emphasize the need to better understand the mechanisms behind β cell adaptation, identity, and dysfunction in MetS.
Source: Journal of Clinical Investigation - Category: Biomedical Science Authors: Source Type: research

Related Links:

In conclusion, the impaired in situ activity of RyR2 may also account for the poor overall cardiac outcome reported in MetS patients; hence, the SERCA pump and RyR2 are both attractive potential targets for future therapies. Introduction Metabolic syndrome (MetS) is a cluster of biochemical and physiological risk factors for cardiovascular disease and diabetes mellitus type 2 (DM2); it represents a severe public health problem around the world (Alberti et al., 2009). Risk factors for MetS include obesity (particularly central obesity), elevated triglyceride (TG) levels, low high-density lipoprotein cholesterol (HDL...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Dan Hu1†, Meijin Zhang2†, Hejun Zhang1, Yan Xia1, Jinxiu Lin2, Xiongwei Zheng1, Feng Peng2* and Wenquan Niu3* 1Department of Pathology, Fujian Cancer Hospital &Fujian Medical University Cancer Hospital, Fuzhou, China 2Department of Cardiology, First Affiliated Hospital of Fujian Medical University, Fuzhou, China 3Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China Background and Objectives: Growing evidence indicates that metabolic syndrome confers a differential risk for the development and progression of many types of cancer, especially in the digestive tr...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
Shafqat Ahmad1,2,3*, Syeda Sadia Fatima4, Gull Rukh5 and Caren E. Smith6 1Department of Medical Sciences, Molecular Epidemiology, Uppsala University, Uppsala, Sweden 2Preventive Medicine Division, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, United States 3Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, MA, United States 4Department of Biological and Biomedical Sciences, Aga Khan University, Karachi, Pakistan 5Department of Neuroscience, Functional Pharmacology, Uppsala University, Uppsala, Sweden 6Nutrition and Genomics Laboratory, Jean Mayer U. S. Depa...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
ConclusionRYGB results in better weight loss compared to SG in Asians, but the rate of T2DM resolution/improvement and improvement of hypertension appears to be similar. In Asian patients without symptoms of gastro-esophageal reflux disease in whom metabolic surgery is performed mainly for T2DM and metabolic syndrome, SG may be the surgery of choice.
Source: Obesity Surgery - Category: Surgery Source Type: research
Publication date: Available online 5 May 2018Source: Diabetes &Metabolic Syndrome: Clinical Research &ReviewsAuthor(s): Dinh-Toi Chu, Nguyen Thi Minh Nguyet, Thien Chu Dinh, Nguyen Vu Thai Lien, Khanh-Hoang Nguyen, Vo Truong Nhu Ngoc, Yang Tao, Le Hoang Son, Duc-Hau Le, Vu Bich Nga, Adam Jurgoński, Quoc-Hung Tran, Pham Van Tu, Van-Huy PhamAbstractOverweight and obesity (OW and OB) have been on the increase globally and posed health risks to the world’s population of all ages, including pre-born babies, children, adolescents, adults and elderly people, via their comorbid conditions. Excellent examples of como...
Source: Diabetes and Metabolic Syndrome: Clinical Research and Reviews - Category: Endocrinology Source Type: research
JC, Tinahones FJ Abstract Male hypogonadism associated with obesity is a very prevalent condition and is increasing in parallel with the epidemic prevalence of obesity. Low testosterone levels promote higher fat mass with reduced lean mass. Male hypogonadism is related to an increase in associated cardiometabolic complications, such as hypertension, type 2 diabetes mellitus, the metabolic syndrome, and cardiovascular disease. Its influence as a comorbidity of obesity is becoming more evident and should be evaluated and treated in at-risk patients. Mechanisms involved in this relationship include body composition ...
Source: Asian Journal of Andrology - Category: Urology & Nephrology Authors: Tags: Asian J Androl Source Type: research
Publication date: Available online 5 May 2018 Source:Diabetes & Metabolic Syndrome: Clinical Research & Reviews Author(s): Dinh-Toi Chu, Nguyen Thi Minh Nguyet, Thien Chu Dinh, Nguyen Vu Thai Lien, Khanh-Hoang Nguyen, Vo Truong Nhu Ngoc, Yang Tao, Le Hoang Son, Duc-Hau Le, Vu Bich Nga, Adam Jurgoński, Quoc-Hung Tran, Pham Van Tu, Van-Huy Pham Overweight and obesity (OW and OB) have been on the increase globally and posed health risks to the world’s population of all ages, including pre-born babies, children, adolescents, adults and elderly people, via their comorbid conditions. Excellent examples of comorbi...
Source: Diabetes and Metabolic Syndrome: Clinical Research and Reviews - Category: Endocrinology Source Type: research
Authors: Jia G, Jia Y, Sowers JR Abstract The overweight and obesity epidemic has led to an increase in the metabolic syndrome and associated cardiovascular disease (CVD). These abnormalities include insulin resistance, type 2 diabetes mellitus, vascular stiffness, hypertension, stroke, and coronary heart disease. Visceral white adipocyte tissue (WAT) expansion and associated fibrosis/stiffness of WAT promote insulin resistance and CVD through increases in proinflammatory adipokines, oxidative stress, activation of renin-angiotensin-aldosterone system, dysregulation of adipocyte apoptosis and autophagy, dysfunction...
Source: Comprehensive Physiology - Category: Physiology Tags: Compr Physiol Source Type: research
Conclusion Vitamin D, family history of diabetes, consanguinity marriages’ and hereditary gene-environment interactions and physical exercise may also contribute to the current diabetes epidemic in Qatari’s Arab populations.
Source: Diabetes and Metabolic Syndrome: Clinical Research and Reviews - Category: Endocrinology Source Type: research
Epidemic of obesity, especially morbid obesity, among children and adolescents, is a key factor associated with the dramatic increase in prevalence of type 2 diabetes mellitus, arterial hypertension, and metabolic syndrome in this population. Furthermore, childhood obesity represents a very important predictor of obesity in adulthood that is related to cardiovascular and cerebrovascular diseases. Overweight and obesity in children and adolescents are associated with impairment of cardiac structure and function. The majority of studies investigated the influence of obesity on left ventricular remodeling. However, the impact...
Source: Journal of Cardiovascular Medicine - Category: Cardiology Tags: Reviews: Cardiac function Source Type: research
More News: Biomedical Science | Carbohydrates | Diabetes | Diabetes Mellitus | Diabetes Type 2 | Eating Disorders & Weight Management | Endocrinology | Epidemics | Epidemiology | Hypertension | Insulin | Metabolic Syndrome | Obesity | Pancreas | Study