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https://www.readbyqxmd.com/read/29342295/empagliflozin-treatment-is-associated-with-improved-beta-cell-function-in-t2dm
#1
Hussein Al Jobori, Giuseppe Daniele, John Adams, Eugenio Cersosimo, Carolina Solis-Herrera, Curtis Triplitt, Ralph A DeFronzo, Muhammad Abdul-Ghani
Objective: To examine whether lowering the plasma glucose concentration with empagliflozin (SGLT2 inhibitor) improves beta cell function in T2DM. Research Design and Methods: 15 T2DM patients received empagliflozin (25 mg/day) for 2 weeks, and beta cell function was measured with 9-step hyperglycemic clamp (each step = +40 mg/dl) before and 48 hours and 14 days after empagliflozin. Results: Empagliflozin caused 101±10 and 117±11 grams glucosuria on days 1 and 14 and produced 25±6 and 38±8 mg/dl reduction (p<0...
January 12, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29341824/intestinal-lymph-as-a-readout-of-meal-induced-glp-1-release-in-an-unrestrained-rat-model
#2
Nino Jejelava, Sharon Kaufman, Jean-Philippe Krieger, Marcella Martins Terra, Wolfgang Langhans, Myrtha Arnold
Intestinal lymph supposedly provides a readout for the secretion of intestinal peptides. We here assessed how mesenteric lymph duct (MLD) lymph levels of glucagon-like peptide (GLP-1), insulin, and metabolites (Glucose, triglycerides [TG]) evolve after isocaloric high and low fat diet (HFD, LFD) meals, and how they compare to hepatic portal vein (HPV) plasma levels. Moreover, we examined the effects of intraperitoneally (IP) administered GLP-1 (1 or 10 nmol/kg) on these parameters. At 20 min after the HFD meal onset, GLP-1 levels were higher in MLD lymph than in HPV plasma...
January 17, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29341416/resveratrol-influences-pancreatic-islets-by-opposing-effects-on-electrical-activity-and-insulin-release
#3
Simone Brouwer, Theresa Hoffmeister, Anne Gresch, Lisa Schönhoff, Martina Düfer
SCOPE: Resveratrol is suggested to improve glycemic control by activation of sirtuin 1 (SIRT1) and has already been tested clinically. Our investigation characterizes the targets of resveratrol in pancreatic beta cells and their contribution to short- and long-term effects on insulin secretion. METHODS AND RESULTS: Islets or beta cells were isolated from C57Bl/6N mice. Electrophysiology was performed with microelectrode arrays and patch-clamp technique, insulin secretion and content were determined by radioimmunoassay, cAMP was measured by enzyme-linked immunosorbent assay and cytosolic Ca2+ concentration by fluorescence methods...
January 17, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29341046/reduced-growth-hormone-secretion-is-associated-with-nonalcoholic-fatty-liver-disease-in-obese-children
#4
Shuang Liang, Zhen Yu, Xiaobo Song, Yu Wang, Meng Li, Jiang Xue
The purpose of the study was to evaluate the relationship between arginine-levodopa-induced growth hormone (GH) secretion and nonalcoholic fatty liver disease (NAFLD) in obese children. This study includes a total of 84 obese and 43 normal weight children. The obese subjects are divided into two groups based on the presence or absence of NAFLD. Clinical examination, anthropometric and laboratory examinations, and liver ultrasonography are assessed for all participants. The obese group had significantly lower peak stimulated GH (p<0...
January 16, 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29339498/mafa-missense-mutation-causes-familial-insulinomatosis-and-diabetes-mellitus
#5
Donato Iacovazzo, Sarah E Flanagan, Emily Walker, Rosana Quezado, Fernando Antonio de Sousa Barros, Richard Caswell, Matthew B Johnson, Matthew Wakeling, Michael Brändle, Min Guo, Mary N Dang, Plamena Gabrovska, Bruno Niederle, Emanuel Christ, Stefan Jenni, Bence Sipos, Maike Nieser, Andrea Frilling, Ketan Dhatariya, Philippe Chanson, Wouter W de Herder, Björn Konukiewitz, Günter Klöppel, Roland Stein, Márta Korbonits, Sian Ellard
The β-cell-enriched MAFA transcription factor plays a central role in regulating glucose-stimulated insulin secretion while also demonstrating oncogenic transformation potential in vitro. No disease-causing MAFA variants have been previously described. We investigated a large pedigree with autosomal dominant inheritance of diabetes mellitus or insulinomatosis, an adult-onset condition of recurrent hyperinsulinemic hypoglycemia caused by multiple insulin-secreting neuroendocrine tumors of the pancreas. Using exome sequencing, we identified a missense MAFA mutation (p...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29339031/resolution-of-type-2-diabetes-after-sleeve-gastrectomy-a-2-step-hypothesis
#6
Federico Sista, Valentina Abruzzese, Marco Clementi, Stefano Guadagni, Laura Montana, Sergio Carandina
BACKGROUND: Weight loss (WL) and altered gut hormonal levels are involved in glucose homeostasis after laparoscopic sleeve gastrectomy (LSG). OBJECTIVES: The aim of this study was to evaluate the time-related effects of WL, ghrelin, and glucacon-like peptide-1 (GLP-1) plasma concentrations on type 2 diabetes resolution after LSG. SETTING: University hospital, Italy. METHODS: Ninety-one patients who underwent LSG were investigated...
December 14, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29338697/additional-dexamethasone-in-chemotherapies-with-carboplatin-and-paclitaxel-could-reduce-the-impaired-glycometabolism-in-rat-models
#7
Yanxiu Guo, Haoxia Zeng, Xiaohong Chang, Chaohua Wang, Heng Cui
BACKGROUND: Side-effects have been considered as the limitation of the chemotherapy agents' administration and life quality in patients with ovarian cancers. In order to explore the influence of the chemotherapy agents commonly used in ovarian cancer patients on the blood glucose metabolism in rat models, we conducted this study which simulated the conditions of clinical protocols. METHODS: Eighty clean-grade female Wistar rats were randomized into 8 groups: Group 1 (Negative control), Group 1' (Dexamethasone), Group 2 (Carboplatin), Group 2' (Carboplatin-plus-dexamethasone), Group 3 (Paclitaxel), Group 3' (Paclitaxel-plus-dexamethasone), Group 4 (Combined therapy), Group 4' (Combined-therapy-plus-dexamethasone)...
January 16, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29338566/constructing-heparin-modified-pancreatic-decellularized-scaffold-to-improve-its-re-endothelialization
#8
Liancheng Xu, Yibing Guo, Yan Huang, Yicheng Xiong, Yang Xu, Xiaohong Li, Jingjing Lu, Lei Wang, Yao Wang, Yuhua Lu, Zhiwei Wang
Pancreas transplantation is considered as a promising therapeutic option with the potential to cure diabetes. However, efficacy of current clinical transplantation is limited by the donor organ. With regard to creating a functional pancreas-tissue equivalent for transplantation, vascularization remains a large obstacle. To enhance the angiogenic properties of pancreatic decellularized scaffold, surface modification of the vasculature was used to promote endothelialization efficiency. In this study, an endothelialized pancreatic decellularized scaffold was obtained through heparin modification under mild conditions...
January 1, 2018: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29338526/associations-of-abdominal-subcutaneous-and-visceral-fat-with-insulin-resistance-and-secretion-differ-between-men-and-women-the-netherlands-epidemiology-of-obesity-study
#9
Renée de Mutsert, Karin Gast, Ralph Widya, Eelco de Koning, Ingrid Jazet, Hildo Lamb, Saskia le Cessie, Albert de Roos, Jan Smit, Frits Rosendaal, Martin den Heijer
BACKGROUND: Abdominal obesity is a well-established risk factor for the development of type 2 diabetes. However, sex differences may exist. We aimed to investigate the associations of abdominal subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) with insulin resistance and insulin secretion in men and women. METHODS: In this cross-sectional analysis of the Netherlands Epidemiology of Obesity study, fasting and postprandial concentrations of glucose and insulin were measured and abdominal fat depots were assessed using magnetic resonance imaging in 2253 participants (53% women)...
January 17, 2018: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/29337272/circulating-adipokines-and-mrna-expression-in-adipose-tissue-and-the-placenta-in-women-with-gestational-diabetes-mellitus
#10
Panayoula C Tsiotra, Panagiotis Halvatsiotis, Konstantinos Patsouras, Eirini Maratou, George Salamalekis, Sotirios A Raptis, George Dimitriadis, Eleni Boutati
Maternal adipose tissue and the placenta secrete various molecules commonly called adipokines such as chemerin, omentin-1, visfatin, adiponectin, and leptin that are important players in the pathogenesis of insulin resistance. Gestational diabetes mellitus (GDM) is defined as a state of glucose intolerance characterized by β-cell dysfunction and insulin resistance. To examine whether circulating adipokines and their mRNA expression in the adipose tissue and the placenta are altered in GDM pregnancy, we compared 15 GDM women [obese (BMI > 30) and non-obese (BMI < 30)] to 23 NGT (normal glucose tolerance) women [obese and non-obese], at the time of the Cesarean section...
January 11, 2018: Peptides
https://www.readbyqxmd.com/read/29337002/hypothalamic-inflammation-and-malfunctioning-glia-in-the-pathophysiology-of-obesity-and-diabetes-translational-significance
#11
REVIEW
Md Habibur Rahman, Anup Bhusal, Won-Ha Lee, In-Kyu Lee, Kyoungho Suk
Preclinical studies have suggested that chronic inflammation in the brain might be associated with multiple metabolic disorders, including obesity and diabetes. In particular, hypothalamic inflammation interferes with the endocrine system and modulates nutritional homeostasis, leading to metabolic alterations and consequent pathologies. With regard to the mechanisms underlying molecular and cellular pathogenesis, neurons, non-neuronal cells, and the crosstalk between them have gained particular attention. Specifically, malfunctioning glia have recently been implicated as an important component of pathological hypothalamic inflammation...
January 11, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29336718/effect-of-irvingia-gabonensis-on-metabolic-syndrome-insulin-sensitivity-and-insulin-secretion
#12
Miriam Méndez-Del Villar, Manuel González-Ortiz, Esperanza Martínez-Abundis, Karina G Pérez-Rubio, Marisol Cortez-Navarrete
The aim of this study was to evaluate the effect of Irvingia gabonensis on metabolic syndrome (MetS), insulin sensitivity, and insulin secretion. A randomized, double-blind, placebo-controlled clinical trial was performed in 24 patients with MetS in accordance with the International Diabetes Federation criteria. Twelve patients received I. gabonensis (150 mg) twice a day during 90 days, and 12 patients received placebo. Glucose and insulin concentrations were measured during a 2-h oral glucose tolerance test...
January 16, 2018: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29336612/relationship-among-adiponectin-insulin-resistance-and-atherosclerosis-in-non-diabetic-hypertensive-patients-and-healthy-adults
#13
Huijuan Kou, Jie Deng, Dengfeng Gao, Anqi Song, Zhenhua Han, Jin Wei, Xin Jin, Rui Ma, Qiangsun Zheng
Adiponectin, which is secreted specifically by adipose tissue, has been shown to have anti-atherogenic and anti-inflammatory effects and to improve insulin resistance (IR). The aim of this study was to determine the correlations among adiponectin, IR and atherosclerosis in non-diabetic hypertensive patients and healthy volunteers. In this case control study, we collected complete demographic data from and measured several laboratory parameters in all enrolled subjects. The homeostasis model of assessment for insulin resistance (HOMA-IR) was calculated as an insulin sensitivity index...
January 16, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29334830/cardiopulmonary-bypass-for-a-patient-with-congenital-hyperinsulinemia
#14
Richard Crook, Richard Issitt
Congenital hyperinsulinism is a clinical syndrome of pancreatic β-cell dysfunction characterized by failure to suppress insulin secretion in the presence of hypoglycemia. Here, we describe the concerns, the techniques used to ameliorate these potential problems, and the outcomes for a child with this condition undergoing cardiopulmonary bypass for correction of an atrial septal defect.
January 1, 2018: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29333376/anti-inflammatory-and-anti-obesity-properties-of-food-bioactive-components-effects-on-adipose-tissue
#15
REVIEW
Shasika Jayarathne, Iurii Koboziev, Oak-Hee Park, Wilna Oldewage-Theron, Chwan-Li Shen, Naima Moustaid-Moussa
Obesity is an epidemic and costly disease affecting 13% of the adult population worldwide. Obesity is associated with adipose tissue hypertrophy and hyperplasia, as well as pathologic endocrine alterations of adipose tissue including local and chronic systemic low-grade inflammation. Moreover, this inflammation is a risk factor for both metabolic syndrome (MetS) and insulin resistance. Basic and clinical studies demonstrate that foods containing bioactive compounds are capable of preventing both obesity and adipose tissue inflammation, improving obesity-associated MetS in human subjects and animal models of obesity...
December 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/29333050/improvement-of-insulin-secretion-and-pancreatic-%C3%AE-cell-function-in-streptozotocin-induced-diabetic-rats-treated-with-aloe-vera-extract
#16
Ayesha Noor, S Gunasekaran, M A Vijayalakshmi
Background: Diabetes mellitus is a metabolic disorder characterized by chronic hyperglycemia. Plant extracts and their products are being used as an alternative system of medicine for the treatment of diabetes. Aloe vera has been traditionally used to treat several diseases and it exhibits antioxidant, anti-inflammatory, and wound-healing effects. Streptozotocin (STZ)-induced Wistar diabetic rats were used in this study to understand the potential protective effect of A. vera extract on the pancreatic islets...
December 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/29332012/classical-adiponectin-leptin-resistin-and-new-chemerin-vaspin-omentin-adipocytokines-in-patients-with-prediabetes
#17
Antoaneta Gateva, Yavor Assyov, Adelina Tsakova, Zdravko Kamenov
Background In the last decade, there has been an increased interest toward fat tissue as an endocrine organ that secretes many cytokines and bioactive mediators that play a role in insulin sensitivity, inflammation, coagulation and the pathogenesis of atherosclerosis. The aim of this study was to investigate classical (adiponectin, leptin, resistin) and new (chemerin, vaspin, omentin) adipocytokine levels in subjects with prediabetes [impaired fasting glucose (IFG) and/or impaired glucose tolerance (IGT)] and obese subjects with normoglycemia...
January 15, 2018: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/29331730/exenatide-exerts-cognitive-effects-by-modulating-the-bdnf-trkb-neurotrophic-axis-in-adult-mice
#18
Manuela Bomba, Alberto Granzotto, Vanessa Castelli, Noemi Massetti, Elena Silvestri, Lorella M T Canzoniero, Annamaria Cimini, Stefano L Sensi
Modulation of insulin-dependent signaling is emerging as a valuable therapeutic tool to target neurodegeneration. In the brain, the activation of insulin receptors promotes cell growth, neuronal repair, and protection. Altered brain insulin signaling participates in the cognitive decline seen in Alzheimer's disease patients and the aging brain. Glucagon-like peptide-1 (GLP-1) regulates insulin secretion and, along with GLP-1 analogues, enhances neurotrophic signaling and counteracts cognitive deficits in preclinical models of neurodegeneration...
December 19, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/29331666/age-related-oxidative-changes-in-pancreatic-islets-are-predominantly-located-in-the-vascular-system
#19
Richard Kehm, Jeannette König, Kerstin Nowotny, Tobias Jung, Stephanie Deubel, Sabrina Gohlke, Tim Julius Schulz, Annika Höhn
Aged tissues usually show a decreased regenerative capacity accompanied by a decline in functionality. During aging pancreatic islets also undergo several morphological and metabolic changes. Besides proliferative and regenerative limitations, endocrine cells lose their secretory capacity, contributing to a decline in functional islet mass and a deregulated glucose homeostasis. This is linked to several features of aging, such as induction of cellular senescence or the formation of modified proteins, such as advanced glycation end products (AGEs) - the latter mainly examined in relation to hyperglycemia and in disease models...
December 29, 2017: Redox Biology
https://www.readbyqxmd.com/read/29330944/improvement-of-islet-function-and-survival-by-integration-of-perfluorodecalin-into-microcapsules-in-vivo-and-in-vitro
#20
Sang-Ho Lee, Heon-Seok Park, Yeoree Yang, Eun-Young Lee, Ji-Won Kim, Gilson Khang, Kun-Ho Yoon
Hypoxic injury of islets is a major obstacle for encapsulated islet transplantation into the peritoneal cavity. To improve oxygen delivery to encapsulated islets, we integrated 20% of the oxygen carrier material, perfluorodecalin (PFD), in alginate capsules mixed with islets (PFD-alginate). Integration of PFD clearly improved islet viability and decreased reactive oxygen species production compared to islets encapsulated with alginate only (alginate) and naked islets exposed to hypoxia in vitro. In PFD-alginate capsules, HIF-1α expression was minimal, and insulin expression was well maintained...
January 12, 2018: Journal of Tissue Engineering and Regenerative Medicine
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