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https://www.readbyqxmd.com/read/28747330/effects-of-randomized-whey-protein-loads-on-energy-intake-appetite-gastric-emptying-and-plasma-gut-hormone-concentrations-in-older-men-and-women
#1
Caroline Giezenaar, Laurence G Trahair, Natalie D Luscombe-Marsh, Trygve Hausken, Scott Standfield, Karen L Jones, Kylie Lange, Michael Horowitz, Ian Chapman, Stijn Soenen
Background: Protein- and energy-rich supplements are used widely for the management of malnutrition in the elderly. Information about the effects of protein on energy intake and related gastrointestinal mechanisms and whether these differ between men and women is limited.Objective: We determined the effects of whey protein on energy intake, appetite, gastric emptying, and gut hormones in healthy older men and women.Design: Eight older women and 8 older men [mean ± SEM age: 72 ± 1 y; body mass index (in kg/m(2)): 25 ± 1] were studied on 3 occasions in which they received protein loads of 30 g (120 kcal) or 70 g (280 kcal) or a flavored water control drink (0 kcal)...
July 26, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28746743/the-incretin-concept-revised-the-origin-of-glp-1-s-insulinotropic-function-the-gut-the-islets-or-both
#2
Daisuke Yabe, Yusuke Seino, Yutaka Seino
Incretins comprise a pair of gut hormones, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1), which are secreted in response to food ingestion and enhance glucose-dependent insulin secretion (GIIS) from pancreatic β-cells. Immediately after secretion, GLP-1 is degraded by dipeptidyl peptidase-4 (DPP-4) more rapidly than GIP, and circulating levels of biologically intact GLP-1 are substantially lower than those of biologically intact GIP. Therefore, there has been a debate on how the gut-derived GLP-1 exerts insulinotropic actions...
July 26, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28744963/association-of-incretins-receptors-genetic-polymorphisms-with-type-2-diabetes-mellitus-in-egyptian-patients
#3
Sally M Shalaby, Haidy E Zidan, AmiraShokry, Jehan Saeed, Rehab H El-Sokkary
INTRODUCTION: Incretins opened a new era in T2DM pathogenesis. AIMS: To assess whether there is an association between GIPR rs2302382 and GIPR rs1800437 and GLP-1R rs367543060 polymorphisms with T2DM or not and also to determine the effect of these polymorphisms on GIP and GLP-1 levels. RESULTS: One hundred and fifty T2DM patients and 150 healthy controls were included in the study, polymorphisms of GIPR rs1800437, GIPR rs2302382 and GLP-1R rs367543060 were genotyped using RFLP-PCR, multiplex allele-specific PCR and RFLP-PCR respectively...
July 25, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28744255/glycemic-and-metabolic-effects-of-two-long-bouts-of-moderate-intensity-exercise-in-men-with-normal-glucose-tolerance-or-type-2-diabetes
#4
Saeed Reza Eshghi, Kevin Fletcher, Étienne Myette-Côté, Cody Durrer, Raniah Q Gabr, Jonathan P Little, Peter Senior, Craig Steinback, Margie H Davenport, Gordon J Bell, Dion R Brocks, Normand G Boulé
BACKGROUND: The glycemic and insulinemic responses following 30-60 min of exercise have been extensively studied, and a dose-response has been proposed between exercise duration, or volume, and improvements in glucose tolerance or insulin sensitivity. However, few studies have examined the effects of longer bouts of exercise in type 2 diabetes (T2D). Longer bouts may have a greater potential to affect glucagon, interleukin-6 (IL-6) and incretin hormones [i.e., glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP)]...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28737477/changes-in-duodenal-enteroendocrine-cells-in-patients-with-irritable-bowel-syndrome-following-dietary-guidance
#5
Tarek Mazzawi, Magdy El-Salhy
The densities of enteroendocrine cells are abnormal in patients with irritable bowel syndrome (IBS); however, they tend to change toward normal levels in stomach, ileum, and colon following dietary guidance. The aim was to identify the types of duodenal enteroendocrine cells affected after receiving dietary guidance in the same group of patients with IBS. Fourteen patients with IBS and 14 control subjects were included. The patients received three sessions of dietary guidance. Both groups underwent gastroscopies at baseline, and again for the patients after 3-9 months (median, four months) from receiving dietary guidance...
July 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28727072/the-equine-glucose-dependent-insulinotropic-polypeptide-receptor-a-potential-therapeutic-target-for-insulin-dysregulation
#6
M H Kheder, M N Sillence, L M Bryant, M A de Laat
Metabolic disease is a significant problem that causes a range of species-specific comorbidities. Recently, a better understanding of glucose-dependent insulinotropic polypeptide (GIP) biology has led to the suggestion that inhibiting its action may attenuate obesity in several species. In horses, antagonism of GIP may also reduce hyperinsulinemia, which leads to insulin-associated laminitis, a painful comorbidity unique to this species. However, little is known about GIP in horses. The aims of this study were to examine the tissue distribution of equine GIP receptors (eGIPR), to determine whether eGIPR can be blocked using a GIP antagonist not tested previously in horses, and to establish whether there is any association between GIP concentrations and body mass in this species...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727063/effect-of-dietary-fiber-and-diet-particle-size-on-nutrient-digestibility-and-gastrointestinal-secretory-function-in-growing-pigs
#7
M Saqui-Salces, Z Luo, P E Urriola, B J Kerr, G C Shurson
Reduction of diet particle size (PS) increases feed efficiency due to an increase in the apparent total tract (ATTD) of GE. However, other effects of PS on the gut secretory function are not known. Therefore, the objective of this experiment was to measure the effect of diet composition (DC) and PS on nutrient digestibility, gastrointestinal hormones, total bile acids (TBA), total cholesterol and glucose concentrations in plasma of finishing pigs ( = 8/diet). Pigs were fed finely (374 ± 29 µm) or coarsely (631 ± 35 µm) ground corn-soybean meal (CSB), CSB + 35% corn dried distillers' grains with solubles (DDGS), and CSB with 21% soybean hulls (SBH) diets for 49 d...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28722834/effects-of-gip-glp-1-and-glp-1ras-on-bone-cell-metabolism
#8
Morten S S Hansen, Michaela Terencova, Jacob Frølich, Moustapha Kassem, Morten Frost
The relationship between gut and skeleton is increasingly recognised as part of the integrated physiology of the whole organism. The incretin hormones gastric inhibitory polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) are secreted from the intestine in response to nutrient intake and exhibit several physiological functions including regulation of islet hormone secretion and glucose levels. A number of GLP-1 receptor agonists (GLP-1RAs) are currently used in treatment of type 2 diabetes and obesity. However, GIP and GLP-1 cognate receptors are widely expressed suggesting that incretin hormones mediate effects beyond control of glucose homeostasis, and reports on associations between incretin hormones and bone metabolism have emerged...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28706425/procalcitionin-as-a-diagnostic-marker-to-distinguish-upper-and-lower-gastrointestinal-perforation
#9
Yang Gao, Kai-Jiang Yu, Kai Kang, Hai-Tao Liu, Xing Zhang, Rui Huang, Jing-Dong Qu, Si-Cong Wang, Rui-Jin Liu, Yan-Song Liu, Hong-Liang Wang
AIM: To assess the accuracy of serum procalcitionin (PCT) as a diagnostic marker in verifying upper and lower gastrointestinal perforation (GIP). METHODS: This retrospective study included 46 patients from the surgical intensive care unit (ICU) of the Second Affiliated Hospital of Harbin Medical University who were confirmed to have GIP between June 2013 and December 2016. Demographic and clinical patient data were recorded on admission to ICU. Patients were divided into upper (n = 19) and lower (n = 27) GIP groups according to the perforation site (above or below Treitz ligament)...
June 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28698280/glycemic-control-after-metabolic-surgery-a-granger-causality-and-graph-analysis
#10
Elena Previti, Serenella Salinari, Alessandro Bertuzzi, Esmeralda Capristo, Stefan Bornstein, Geltrude Mingrone
To examine the contribution of Non-Esterified Fatty-Acids (NEFA) and incretin to insulin-resistance and diabetes amelioration after malabsorptive metabolic-surgery that dramatically reduces circulating NEFA. In fact, NEFA infusion reduces glucose-stimulated insulin secretion and high-fat diets predict diabetes development. Six healthy-controls, 11 obese and 10 Type-2-Diabetic (T2D) subjects were studied before and 1 month after Bilio-Pancreatic Diversion (BPD). Twenty-four hours plasma glucose, NEFA, insulin, C-peptide, glucagon-like peptide-1 (GLP1) and gastric-inhibitory-polypeptide (GIP) time courses were obtained and analyzed by Granger causality and graph analyses...
July 11, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28696682/homogeneous-assays-of-second-messenger-signaling-and-hormone-secretion-using-thermofluorimetric-methods-that-minimize-calibration-burden
#11
Juan Hu, Christopher J Easley
Homogeneous assays are characterized by rapidity, low cost, and simple workflows. However, relatively few specialized homogeneous platforms have garnered significant use in biological studies. Inconsistencies in matrix interferences, limited multiplexability, and the requirement for specialized instrumentation are among the various reasons for delayed acceptance. Recently, we have shown that DNA-driven protein assays using thermofluorimetric analysis (TFA) can limit matrix interference and promote multiplexing, all while requiring only a standard qPCR instrument for readout...
July 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28694840/hepatic-adipocyte-enteric-and-pancreatic-hormones-response-to-dietary-macronutrient-composition-and-relationship-with-metabolism
#12
Bridget M Hron, Cara B Ebbeling, Henry A Feldman, David S Ludwig
BACKGROUND: We sought to characterize the effects of dietary macronutrient composition on various hormones implicated in the regulation of insulin sensitivity (IS) and energy expenditure (EE). METHODS: Following 10-15% weight loss, 21 overweight subjects consumed 3 weight-loss maintenance diets [low fat (LF), low glycemic index (LGI) and very low carbohydrate (VLC)] in random order, each for 4 weeks. At baseline and at the end of each treatment period, fasting samples for fibroblast growth factor (FGF)-21, heme-oxygenase-1 (HO-1), chemerin, irisin, secreted frizzle-related protein (SFRP-4), total bile acids, ghrelin, gastrin inhibitory peptide (GIP), peptide-Y, and amylin; hepatic and peripheral IS; and EE were obtained...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28690913/ghrelin-amylin-gastric-inhibitory-peptide-and-cognition-in-middle-aged-hiv-infected-and-uninfected-women-the-women-s-interagency-hiv-study
#13
Samy I McFarlane, Michelle M Mielke, Anthony Uglialoro, Sheila M Keating, Susan Holman, Howard Minkoff, Howard A Crystal, Deborah R Gustafson
OBJECTIVE: To explore the gut-brain axis by examining gut hormone levels and cognitive test scores in women with (HIV+) and without (HIV-) HIV infection. DESIGN/METHODS: Participants included 356 women (248 HIV+, 108 at risk HIV-) in the Brooklyn Women's Interagency HIV Study (WIHS) with measured levels of ghrelin, amylin and gastric inhibitory peptide (GIP), also known as glucose-dependent insulinotropic polypeptide. Cross-sectional analyses using linear regression models estimated the relationship between gut hormones and Trails A, Trails B, Stroop interference time, Stroop word recall, Stroop color naming and reading, and Symbol Digit Modalities Test (SDMT) with consideration for age, HIV infection status, Wide Range Achievement Test score (WRAT), CD4 count, insulin resistance, drug use, and race/ethnicity...
February 2017: Journal of Neurology & Neurophysiology
https://www.readbyqxmd.com/read/28674521/ghrelin-is-a-regulator-of-glucagon-like-peptide-1-secretion-and-transcription-in-mice
#14
Andreas Lindqvist, Liliya Shcherbina, Ann-Helen Thorén Fischer, Nils Wierup
The gut hormones ghrelin, glucagon-like peptide 1 (GLP-1), and glucose-dependent insulinotropic peptide (GIP) have been intensively studied for their role in metabolism. It is, however, not well known whether the hormones interplay and regulate the secretion of each other. In this study, we studied the effect of ghrelin on GLP-1, GIP, and insulin secretion during an oral glucose tolerance test (OGTT) in mice. Intravenous administration of ghrelin caused increased GLP-1 secretion during the OGTT. On the other hand, ghrelin had no effect on circulating levels of glucose, insulin, and GIP...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28673376/adaptive-process-triage-system-cannot-identify-patients-with-gastrointestinal-perforation
#15
Aske Mathias Bohm, Mai-Britt Tolstrup, Ismail Gögenur
INTRODUCTION: Adaptive process triage (ADAPT) is a triage tool developed to assess the severity and address the priority of emergency patients. In 2009-2011, ADAPT was the most frequently used triage system in Denmark. Until now, no Danish triage system has been evaluated based on a selective group of patients in need of acute abdominal surgery. Gastrointestinal perforation (GIP) is acknowledged as one of the surgical conditions with the highest mortality rates. The aim of this study was to evaluate whether ADAPT can identify patients with GIP...
July 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28667118/the-gluco-and-liporegulatory-and-the-vasodilatory-effects-of-glucose-dependent-insulinotropic-polypeptide-gip-are-abolished-by-an-antagonist-of-the-human-gip-receptor
#16
Meena Asmar, Ali Asmar, Lene Simonsen, Lærke Smidt Gasbjerg, Alexander Hovard Sparre-Ulrich, Mette Rosenkilde, Bolette Hartmann, Flemming Dela, Jens Juul Holst, Jens Bülow
A truncated form of human GIP, GIP(3-30)NH2, was recently identified as an antagonist of the human GIP receptor. This study examined the ability of GIP(3-30)NH2 to antagonize the physiological actions of GIP in glucose metabolism, subcutaneous abdominal adipose tissue blood flow (ATBF) and lipid metabolism in humans.Eight lean subjects were studied by measuring arterio-venous concentrations of metabolites and ATBF on three different occasions during hyperglycemic-hyperinsulinemic clamps with concomitant infusions of either GIP, GIP(3-30)NH2 or both GIP and GIP(3-30)NH2During GIP(3-30)NH2 alone and in combination with GIP, insulin levels and the total glucose amount infused to maintain the clamp were lower than during GIP alone...
June 30, 2017: Diabetes
https://www.readbyqxmd.com/read/28666800/a-novel-glp-1-gip-dual-agonist-is-more-effective-than-liraglutide-in-reducing-inflammation-and-enhancing-gdnf-release-in-the-mptp-mouse-model-of-parkinson-s-disease
#17
Ziyue Yuan, Dongfang Li, Peng Feng, Guofang Xue, Chenhui Ji, Guanglai Li, Christian Hölscher
Type 2 diabetes mellitus (T2DM) is one of the risk factors for Parkinson's disease (PD). Insulin desensitisation has been observed in the brains of patients, which may promote neurodegeneration. Incretins are a family of growth factors that can re-sensitise insulin signalling. We have previously shown that mimetics of glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) have neuroprotective effects in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropypridine (MPTP) mouse model of PD...
June 27, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28666375/role-of-peptide-yy3-36-and-glucose-dependent-insulinotropic-polypeptide-in-anorexia-induction-by-trichothecences-t-2-toxin-ht-2-toxin-diacetoxyscirpenol-and-neosolaniol
#18
Jie Zhang, Hui Jia, Qingqing Wang, Yajie Zhang, Wenda Wu, Haibin Zhang
Trichothecences, secondary metabolites produced by Fusarium, are serious health risks to humans and animals worldwide. Although type A trichothecence-induced food refusal has been observed, the mechanism underlying the anorexia caused by these compounds is not fully understood. In this study, we hypothesized that anorexia induced by type A trichothecenes, including T-2 toxin (T-2), HT-2 toxin (HT-2), diacetoxyscirpenol (DAS) and neosolaniol (NEO), in mice corresponds to the changes in the gut satiety hormones peptide YY3-36 (PYY3-36) and glucose-dependent insulinotropic polypeptide (GIP) in plasma...
June 28, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28659730/acute-selective-bioactivity-of-grape-seed-proanthocyanidins-on-enteroendocrine-secretions-in-the-gastrointestinal-tract
#19
Àngela Casanova-Martí, Joan Serrano, M Teresa Blay, Ximena Terra, Anna Ardévol, Montserrat Pinent
Background: Enteroendocrine cells respond to food components by secreting an array of hormones that regulate several functions. We have previously shown that grape seed proanthocyanidins (GSPE) modulate GLP-1 levels. Objective: To deepen on the knowledge of the mechanisms used by GSPE to increase GLP-1, and extend it to its role at modulation of other enterohormones. Design: We used an ex vivo system to test direct modulation of enterohormones; STC-1 cells to test pure phenolic compounds; and rats to test the effects at different gastrointestinal segments...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28655715/incretin-secretion-in-humans-is-under-the-influence-of-cannabinoid-receptors
#20
Chee W Chia, Olga D Carlson, David D Liu, Isabel González-Mariscal, Sara Santa-Cruz Calvo, Josephine M Egan
The mechanisms regulating incretin secretion are not fully known. Human obesity is associated with altered incretin secretion and elevated endocannabinoid levels. Since cannabinoid receptors (CBRs) are expressed on incretin-secreting cells in rodents, we hypothesized that endocannabinoids are involved in the regulation of incretin secretion. We compared plasma glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) responses during oral glucose tolerance test (OGTT) in twenty lean and twenty obese participants from the Baltimore Longitudinal Study of Aging (BLSA)...
June 27, 2017: American Journal of Physiology. Endocrinology and Metabolism
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