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Insulin tolerance

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https://www.readbyqxmd.com/read/28434207/maternal-rates-of-lipolysis-and-glucose-production-in-late-pregnancy-are-independently-related-to-fetal-weight
#1
Barbro Diderholm, Kathryn Beardsall, Peter Murgatroyd, Christoph Lees, Jan Gustafsson, David Dunger
OBJECTIVE: Associations between maternal glucose levels and increased fetal growth are well established and independent relationships with maternal weight, weight gain and insulin resistance are also observed. The relative roles of lipolysis and glucose production in the determination of these observations remain unclear. DESIGN: We examined, through detailed physiological studies, the relationship between maternal late gestational energy substrate production (glucose and glycerol), maternal weight and weight gain, and estimated fetal size in the third trimester...
April 23, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28432082/effect-of-oral-contraceptives-and-or-metformin-on-glp-1-secretion-and-reactive-hypoglycemia-in-pcos
#2
Dorte Glintborg, Hanne Mumm, Jens Juul Holst, Marianne Andersen
CONTEXT: Insulin resistance in polycystic ovary syndrome (PCOS) may increase the risk of reactive hypoglycaemia (RH) and decrease glucagon-like peptide-1 (GLP-1) secretion. The possible effects of treatment with oral contraceptives (OCP) and/or metformin on GLP-1 secretion and risk of RH in PCOS is undetermined. SETTING: Outpatient clinic. PATIENTS AND INTERVENTIONS: Randomized, controlled clinical trial. Ninety women with PCOS were randomized to 12 month treatment with OCP (150 mg desogestrel+30 microgram ethinylestradiol), metformin (2 g/day), or metformin +OCP...
April 21, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28432081/glucose-tolerance-and-insulin-responsiveness-in-gitelman-syndrome-patients
#3
Tao Yuan, Lanping Jiang, Chen Chen, Xiaoyan Peng, Min Nie, Xuemei Li, Xiaoping Xing, Xuewang Li, Limeng Chen
Objective Impaired glucose metabolism and insulin sensitivity have been reported in patients with Gitelman syndrome (GS), but insulin secretion and the related mechanisms are not well understood. Design and Methods The serum glucose levels, insulin secretion and insulin sensitivity were evaluated in patients with GS (n=28), patients with type 2 diabetes mellitus (DM) and healthy individuals (n=20 in both groups) using an oral glucose tolerance test. Serum and urine sodium, potassium and creatinine levels were measured at 0, 30, 60, 120 and 180 min after an oral glucose load was administered...
April 21, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28431559/effects-of-whole-grain-rye-with-and-without-resistant-starch-type-2-supplementation-on-glucose-tolerance-gut-hormones-inflammation-and-appetite-regulation-in-an-11-14-5%C3%A2-hour-perspective-a-randomized-controlled-study-in-healthy-subjects
#4
Jonna C Sandberg, Inger M E Björck, Anne C Nilsson
BACKGROUND: The prevalence of obesity is increasing worldwide and prevention is needed. Whole grain has shown potential to lower the risk of obesity, cardiovascular disease and type 2 diabetes. One possible mechanism behind the benefits of whole grain is the gut fermentation of dietary fiber (DF), e.g. non-starch polysaccharides and resistant starch (RS), in whole grain. The purpose of the study is to investigate the effect of whole grain rye-based products on glucose- and appetite regulation...
April 21, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28431322/xanthohumol-and-8-prenylnaringenin-ameliorate-diabetic-related-metabolic-dysfunctions-in-mice
#5
Raquel Costa, Ilda Rodrigues, Luísa Guardão, Sílvia Rocha-Rodrigues, Carolina Silva, José Magalhães, Manuel Ferreira-de-Almeida, Rita Negrão, Raquel Soares
Type 2 diabetes mellitus (T2DM) is a chronic disease characterized by metabolic disturbances in specific tissues. The present work aimed to analyze the effects of xanthohumol (XN) and 8-prenylnaringenin (8PN), two beer-derived polyphenols, in liver and skeletal muscle lipid and glycolytic metabolism in T2DM mice model. Thirty C57Bl/6 mice were randomly divided into five groups: standard diet (control), high-fat diet (DM), high-fat diet plus ethanol (DM-Ethanol), high-fat diet plus 10 mg/L XN (DM-XN) and high-fat diet plus 10 mg/L 8PN (DM-8PN) during 20 weeks...
April 6, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28430981/central-nervous-system-glp-1-receptors-regulate-islet-hormone-secretion-and-glucose-homeostasis-in-male-rats
#6
Lene Jessen, Eric P Smith, Yvonne Ulrich-Lai, James P Herman, Randy J Seeley, Darleen Sandoval, David D'Alessio
The glucagon-like peptide 1 (GLP-1) system plays an important role in blood glucose regulation, in great part through coordinate control of insulin and glucagon secretion. These effects are generally attributed to GLP-1 produced in peripheral sites, principally the intestine. GLP-1 is also produced in hindbrain neurons that signal through GLP-1 receptors (GLP-1r) expressed in brain regions involved in metabolic regulation. GLP-1 in the central nervous system (CNS) induces satiety, visceral illness, and stress responses...
April 18, 2017: Endocrinology
https://www.readbyqxmd.com/read/28430816/possible-increase-in-insulin-resistance-and-concealed-glucose-coupled-potassium-lowering-mechanisms-during-acute-coronary-syndrome-documented-by-covariance-structure-analysis
#7
Satoshi Ito, Tomohisa Nagoshi, Kosuke Minai, Yusuke Kashiwagi, Hiroshi Sekiyama, Akira Yoshii, Haruka Kimura, Yasunori Inoue, Kazuo Ogawa, Toshikazu D Tanaka, Takayuki Ogawa, Makoto Kawai, Michihiro Yoshimura
OBJECTIVE: Although glucose-insulin-potassium (GIK) therapy ought to be beneficial for ischemic heart disease in general, variable outcomes in many clinical trials of GIK in acute coronary syndrome (ACS) had a controversial impact. This study was designed to examine whether "insulin resistance" is involved in ACS and to clarify other potential intrinsic compensatory mechanisms for GIK tolerance through highly statistical procedure. METHODS AND RESULTS: We compared the degree of insulin resistance during ACS attack and remission phase after treatment in individual patients (n = 104)...
2017: PloS One
https://www.readbyqxmd.com/read/28430139/the-metalloproteinase-adam28-promotes-metabolic-dysfunction-in-mice
#8
Lakshini Herat, Caroline Rudnicka, Yasunori Okada, Satsuki Mochizuki, Markus Schlaich, Vance Matthews
Obesity and diabetes are major causes of morbidity and mortality globally. The current study builds upon our previous association studies highlighting that A Disintegrin And Metalloproteinase 28 (ADAM28) appears to be implicated in the pathogenesis of obesity and type 2 diabetes in humans. Our novel study characterised the expression of ADAM28 in mice with the metabolic syndrome and used molecular inhibition approaches to investigate the functional role of ADAM28 in the pathogenesis of high fat diet-induced obesity...
April 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28429286/effects-of-selenium-supplementation-on-the-diabetic-condition-depend-on-the-baseline-selenium-status-in-kkay-mice
#9
Novian Febiyanto, Chiho Yamazaki, Satomi Kameo, Dian K Sari, Irma M Puspitasari, Deni K Sunjaya, Dewi M D Herawati, Gaga I Nugraha, Toshio Fukuda, Hiroshi Koyama
Oxidative stress in obesity leads to insulin resistance in type 2 diabetes. Some selenoproteins possess antioxidant properties, suggesting that selenium (Se) may protect against type 2 diabetes; however, evidence from epidemiological studies is contradictory. We hypothesized that Se status before supplementation (baseline) contributes to the supplementation outcome. This study aimed to clarify the influence of baseline Se status on the effect of Se supplementation on the diabetic condition. Six-week-old KKAy mice were fed a diet without supplemental Se or with 0...
April 20, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28429187/curcumin-reverses-the-depressive-like-behavior-and-insulin-resistance-induced-by-chronic-mild-stress
#10
Ji-Duo Shen, Yu Wei, Yu-Jie Li, Jing-Yi Qiao, Yu-Cheng Li
Increasing evidence has demonstrated that patients with depression have a higher risk of developing type 2 diabetes. Insulin resistance has been identified as the key mechanism linking depression and diabetes. The present study established a rat model of depression complicated by insulin resistance using a 12-week exposure to chronic mild stress (CMS) and investigated the therapeutic effects of curcumin. Sucrose intake tests were used to evaluate depressive-like behaviors, and oral glucose tolerance tests (OGTT) and intraperitoneal insulin tolerance tests (IPITT) were performed to evaluate insulin sensitivity...
April 21, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28428756/neck-circumference-is-associated-with-muscle-sympathetic-nerve-activity-in-overweight-and-obese-men-but-not-women
#11
Nora E Straznicky, Mariee T Grima, Carolina I Sari, Nina Eikelis, Paul J Nestel, John B Dixon, Gavin W Lambert, Markus P Schlaich, Sarah E Phillips, Elisabeth A Lambert
Background: Neck circumference (NC) is a predictor of cardiometabolic risk. The objective of this study was to explore the relationship of NC to muscle sympathetic nerve activity (MSNA) within an overweight and obese population. Methods: The study design was a retrospective cross-sectional analysis. Un-medicated persons (72 men, 53 postmenopausal women) aged 56 ± 1 years (mean ± SEM) with body mass index (BMI) 32.8 ± 0.4 kg/m(2), were studied. NC was measured together with traditional anthropometric measures, supine blood pressure, fasting blood lipids, insulin, and glucose...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28428224/familial-hypercholesterolemia-and-type-2-diabetes-in-the-old-order-amish
#12
Huichun Xu, Kathleen A Ryan, Thomas J Jaworek, Lorraine Southam, Jeffrey G Reid, John D Overton, Aris Baras, Marja K Puurunen, Eleftheria Zeggini, Simeon I Taylor, Alan R Shuldiner, Braxton D Mitchell
Alleles associated with lower levels of low density lipoprotein cholesterol (LDL-C) have recently been associated with an increased risk of type 2 diabetes (T2D), highlighting the complex relationship between LDL-C and diabetes. This observation begs the question whether LDL-C-raising alleles are associated with a decreased risk of T2D. This issue was recently addressed in a large familial hypercholesterolemia (FH) screening study, which reported a lower prevalence of self-reported diabetes in FH subjects than age-matched relatives without FH...
April 20, 2017: Diabetes
https://www.readbyqxmd.com/read/28428045/sco2-deficient-mice-develop-increased-adiposity-and-insulin-resistance
#13
Shauna Hill, Sathyaseelan S Deepa, Kavithalakshmi Sataranatarajan, Pavithra Premkumar, Daniel Pulliam, Yuhong Liu, Vanessa Y Soto, Kathleen E Fischer, Holly Van Remmen
Cytochrome c oxidase (COX) is an essential transmembrane protein complex (Complex IV) in the mitochondrial respiratory electron chain. Mutations in genes responsible for the assembly of COX are associated with Leigh syndrome, cardiomyopathy, spinal muscular atrophy and other fatal metabolic disorders in humans. Previous studies have shown that mice lacking the COX assembly protein Surf1 (Surf1(-/-) mice) paradoxically show a number of beneficial metabolic phenotypes including increased insulin sensitivity, upregulation of mitochondrial biogenesis, induction of stress response pathways and increased lifespan...
April 17, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28428027/fructose-intervention-for-12-weeks-does-not-impair-glycemic-control-or-incretin-hormone-responses-during-oral-glucose-or-mixed-meal-tests-in-obese-men
#14
N Matikainen, S Söderlund, E Björnson, L H Bogl, K H Pietiläinen, A Hakkarainen, N Lundbom, B Eliasson, S M Räsänen, A Rivellese, L Patti, A Prinster, G Riccardi, J-P Després, N Alméras, J J Holst, C F Deacon, J Borén, M-R Taskinen
BACKGROUND AND AIMS: Incretin hormones glucagon-like peptide (GLP)-1 and glucose-dependent insulinotropic polypeptide (GIP) are affected early on in the pathogenesis of metabolic syndrome and type 2 diabetes. Epidemiologic studies consistently link high fructose consumption to insulin resistance but whether fructose consumption impairs the incretin response remains unknown. METHODS AND RESULTS: As many as 66 obese (BMI 26-40 kg/m(2)) male subjects consumed fructose-sweetened beverages containing 75 g fructose/day for 12 weeks while continuing their usual lifestyle...
March 18, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28428013/-the-monophasic-pattern-in-oral-glucose-tolerance-test-as-a-predictive-risk-factor-of-type-2-diabetes-in-obese-paediatric-patients
#15
Aura D Herrera-Martínez, Patricia Enes, María Martín-Frías, Belén Roldán, Rosa Yelmo, Raquel Barrio
INTRODUCTION: The onset of obesity at young ages is strongly associated with the early development of type 2diabetes (T2D). The shape of the curves of glucose and insulin curves during an oral glucose tolerance test (OGTT) could predict the risk of developing T2D. OBJECTIVE: To analyse the morphology of the OGTT and determine T2D risk factors in a mainly Caucasian population of children and adolescents. METHODS: Observational retrospective study including 588 patients (309 males, 279 females) with a mean age of 11...
April 17, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/28427090/the-aldosterone-synthase-inhibitor-fad286-is-suitable-for-lowering-aldosterone-levels-in-zdf-rats-but-not-in-db-db-mice
#16
Anja Hofmann, Coy Brunssen, Mirko Peitzsch, Mariya Balyura, Jennifer Mittag, Annika Frenzel, Anett Jannasch, Nicholas F Brown, Steven M Weldon, Kristina K Gueneva-Boucheva, Graeme Eisenhofer, Stefan R Bornstein, Henning Morawietz
Inhibition of aldosterone synthase is an alternative treatment option to mineralocorticoid receptor antagonism to prevent harmful aldosterone actions. FAD286 is one of the best characterized aldosterone synthase inhibitors to date. FAD286 improves glucose tolerance and increases glucose-stimulated insulin secretion in obese and diabetic ZDF rats. However, there is limited knowledge about the dose-dependent effects of FAD286 on plasma aldosterone, corticosterone, and 11-deoxycorticosterone in ZDF rats and in db/db mice, a second important rodent model of obesity and type 2 diabetes...
April 20, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28424924/effects-of-gw002-a-novel-recombinant-human-glucagon-like-peptide-1-glp-1-analog-fusion-protein-on-cho-recombinant-cells-and-bks-db-mice
#17
Wan-Wan Ji, Dong-An Yu, Min Fan, Meng You, You Lu, Er-Bing Li, Ning Xie, Shou-Sheng Yan
AIMS: GLP-1-based strategies have many advantages in treatment of type 2 diabetes mellitus (T2DM), but native GLP-1 has a short half-life in the circulation, which limits its clinical application. The purpose of this study was to evaluate the effects of GW002, a novel recombinant GLP-1 analog fusion protein produced by linking the human GLP-1 analog C-terminus to the N-terminus of human serum albumin via a linker, in vitro and in BKS-db mice. METHODS: To determine whether GW002 can activate the GLP-1 receptor in cells, the level of luciferase expression was evaluated in vitro...
April 19, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28423886/adiponectin-induced-ampk-impairment-mediates-insulin-resistance-in-bama-mini-pig-fed-high-fat-and-high-sucrose-diet
#18
Miaomiao Niu, Lei Xiang, Yaqian Liu, Yuqiong Zhao, Jifang Yuan, Xin Dai, Hua Chen
Objective: Adipose tissue is no longer considered as an inert storage organ for lipid, but instead is thought to play an active role in regulating insulin effects via secretion adipokines. However, conflicting reports have emerged regarding the effects of adipokines. In this study, we investigated the role of adipokines in glucose metabolism and insulin sensitivity in obese Bama mini-pigs. Methods: An obesity model was established in Bama mini-pigs, by feeding with high-fat and high-sucrose diet for 30 weeks...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28423082/comparative-analysis-of-two-different-models-of-swimming-applied-to-pregnant-rats-born-small-for-pregnant-age
#19
Silvana B Corvino, Débora C Damasceno, Yuri K Sinzato, Aline O Netto, Nathália C D Macedo, Elena Zambrano, Gustavo T Volpato
The aim of this study was to compare two models of swimming applied to pregnant rats born small for pregnancy age (SPA). Diabetes was chemically induced in adult female rats to develop an inadequate intrauterine environment, leading to birth of a SPA offspring. In adulthood, the female SPA rats were mated and submitted to different swimming programs. The exercise program 1 (Ex1) consisted of swimming for 15 minutes, followed by 15 minutes of rest and another 15 minutes of swimming, 3 days a week before and during pregnancy...
January 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28420717/heart-lipids-and-hormones
#20
Peter Wolf, Yvonne Winhofer, Martin Krssak, Michael Krebs
Cardiovascular disease is the leading cause of death in general population. Besides well known risk factors like hypertension, impaired glucose tolerance and dyslipidemia, growing evidence suggests that also hormonal changes in various endocrine diseases impact cardiac morphology and function. Recent studies highlight the importance of ectopic intracellular myocardial and pericardial lipid deposition, since even slight changes of these fat depots are associated with alterations in cardiac performance. In this review we overview the effects of hormones, including insulin, thyroid hormones, growth hormone and cortisol, on heart function, focusing on their impact on myocardial lipid metabolism, cardiac substrate utilization and ectopic lipid deposition, in order to highlight the important role of even subtle hormonal changes for heart function in various endocrine and metabolic diseases...
April 18, 2017: Endocrine Connections
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