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#1
EDITORIAL
Alexa H Gips
No abstract text is available yet for this article.
June 2018: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/29776406/the-effect-of-dpp-4-inhibition-to-improve-functional-outcome-after-stroke-is-mediated-by-the-sdf-1%C3%AE-cxcr4-pathway
#2
Fausto Chiazza, Harald Tammen, Hiranya Pintana, Grazyna Lietzau, Massimo Collino, Thomas Nyström, Thomas Klein, Vladimer Darsalia, Cesare Patrone
BACKGROUND: Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are approved drugs for the treatment of hyperglycemia in patients with type 2 diabetes. These effects are mainly mediated by inhibiting endogenous glucagon-like peptide-1 (GLP-1) cleavage. Interestingly, gliptins can also improve stroke outcome in rodents independently from GLP1. However, the underlying mechanisms are unknown. Stromal cell-derived factor-1α (SDF-1α) is a DPP-4 substrate and CXCR4 agonist promoting beneficial effects in injured brains...
May 19, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29765988/genetic-variability-of-the-glucose-dependent-insulinotropic-peptide-gene-is-involved-in-the-premature-coronary-artery-disease-in-a-chinese-population-with-type-2-diabetes
#3
Xiaowei Ma, Jia Huang, Difei Lu, Nan Gu, Ran Lu, Jianwei Zhang, Hong Zhang, Jianping Li, Junqing Zhang, Xiaohui Guo
Background: Glucose-dependent insulinotropic polypeptide (GIP) is closely related to diabetes and obesity, both of which are confirmed to increase the risk of coronary artery disease (CAD). Our study aimed to investigate whether the polymorphisms in GIP genes could affect the risk of cardiovascular disease in type 2 diabetic patients in the Chinese Han population. Methods: We selected and genotyped two haplotype-tagging single nucleotide polymorphisms (tag-SNPs) (rs2291725 C>T, rs8078510 G>A) of GIP gene based on CHB data in HapMap Phase II database ( r 2 < 0...
2018: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29761876/differential-gip-glp-1-intestinal-cell-distribution-in-diabetics-yields-distinctive-rearrangements-depending-on-roux-en-y-biliopancreatic-limb-length
#4
António M Palha, Sofia S Pereira, Madalena M Costa, Tiago Morais, André F Maia, Marta Guimarães, Mário Nora, Mariana P Monteiro
As incretins are known to play an important role in type 2 diabetics (T2D) improvement observed after Roux-en-Y gastric bypass (RYGB), our aim was to assess whether increasing the length of RYGB biliopancreatic limb in T2D would modify the incretin staining cell density found after the gastric outlet. Small intestine biopsies (n = 38) were harvested during RYGB at two different distances from the duodenal angle; either 60-90 cm (n = 28), from non-diabetic (n = 18) patients, and T2D (n = 10), or 200 cm (n = 10) from T2D...
May 15, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29750414/glucose-dependent-insulinotropic-polypeptide-increases-blood-flow-in-adipose-tissue-of-humans-by-recruiting-capillaries
#5
Meena Asmar, Ali Asmar, Lene Simonsen, Jens Juul Holst, Jens Bülow
Context and objektive: Glucose-dependent insulinotropic polypeptide (GIP) in combination with hyperinsulinemia increase blood flow and triglyceride clearance in subcutaneous abdominal adipose tissue in lean humans. The present experiments were performed to determine whether the increase may involve capillary recruitment. Design: Eight lean healthy volunteers were studied before and after 1-h infusion of GIP or saline during a hyperglycemic-hyperinsulinemic clamp, raising plasma glucose and insulin to postprandial levels...
May 9, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29735436/-nicorandil-improves-cognitive-dysfunction-in-mice-with-streptozotocin-induced-diabetes
#6
Wen-Hui Yan, Chun-Xi Zhang, Tong Xing, Xue Gong, Yu-Xuan Yang, Yi-Nuo Li, Xuan Liu, Jiamaliding Ayijiang, Ye Yu, Meng Zhang, Li-Na Chen
OBJECTIVE: To observe the protective effects of potassium channel opener nicorandil against cognitive dysfunction in mice with streptozotocin (STZ)-induced diabetes. METHODS: C57BL/6J mouse models of type 1 diabetes mellitus (T1DM) were established by intraperitoneal injection of STZ and received daily treatment with intragastric administration of nicorandil or saline (model group) for 4 consecutive weeks, with normal C57BL/6J mice serving as control. Fasting blood glucose level was recorded every week and Morris water maze was used to evaluate the cognitive behavior of the mice in the 4th week...
April 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29732475/effects-of-acute-nefa-manipulation-on-incretin-induced-insulin-secretion-in-participants-with-and-without-type-2-diabetes
#7
Brenno Astiarraga, Valéria B Chueire, Aglécio L Souza, Ricardo Pereira-Moreira, Sarah Monte Alegre, Andrea Natali, Andrea Tura, Andrea Mari, Ele Ferrannini, Elza Muscelli
AIMS/HYPOTHESIS: Incretin effect-the potentiation of glucose-stimulated insulin release induced by the oral vs the i.v. route-is impaired in dysglycaemic states. Despite evidence from human islet studies that NEFA interfere with incretin function, little information is available about the effect in humans. We tested the impact of acute bidirectional NEFA manipulation on the incretin effect in humans. METHODS: Thirteen individuals with type 2 diabetes and ten non-diabetic volunteers had a 3 h OGTT, and, a week later, an i...
May 7, 2018: Diabetologia
https://www.readbyqxmd.com/read/29723152/-the-role-of-single-nucleotide-polymorphisms-in-gipr-gene-in-the-changes-of-secretion-in-hormones-and-adipokines-in-patients-with-obesity-with-type-2-diabetes
#8
D A Skuratovskaia, M A Vulf, E V Kirienkova, N I Mironyuk, P A Zatolokin, L S Litvinova
The relationship between the rs2302382, rs8111428 and Glu354Gln (rs1800437) polymorphisms in GIPR (glucosedependent insulinotropic polypeptide receptor) gene and plasma levels of mediators involved in the regulation of carbohydrate metabolism in obese patients with type 2 diabetes (before and after a test breakfast) was investigated. The contribution of polymorphic variants of rs2302382, rs8111428 in GIPR gene in the predisposition to type 2 diabetes in individuals belonging to the Slavic population of Russia was found...
March 2018: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/29723041/transcriptional-factor-pancreatic-duodenal-homeobox-1-pdx1-is-involved-in-age-related-gip-hypersecretion-in-mice
#9
Eri Ikeguchi, Norio Harada, Yoshinori Kanemaru, Akiko Sankoda, Shunsuke Yamane, Kanako Iwasaki, Masamichi Imajo, Yuki Murata, Kazuyo Suzuki, Erina Joo, Nobuya Inagaki
Fat accumulation with aging is a serious problem; glucose-dependent insulinotropic polypeptide (GIP) is an incretin that plays an important role in fat accumulation. GIP receptor-knockout mice show reduced fat mass and improved insulin sensitivity associated with aging. Therefore, GIP is involved in fat accumulation and insulin resistance with aging. However, age-related changes of GIP secretion remain unclear. The present study aimed to elucidate age-related changes of GIP secretion and enteroendocrine K cells using GIP reporter (GIP-GFP knock-in heterozygous; GIPgfp/+ ) mice...
May 3, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29721762/effects-of-diet-on-bile-acid-metabolism-and-insulin-resistance-in-type-2-diabetic-rats-after-roux-en-y-gastric-bypass
#10
Cheng-Xiang Shan, Nian-Cun Qiu, Miao-E Liu, Si-Luo Zha, Xin Song, Zhi-Peng Du, Wen-Sheng Rao, Dao-Zhen Jiang, Wei Zhang, Ming Qiu
BACKGROUND: Roux-en-Y gastric bypass (RYGB) is effective for the treatment of type 2 diabetes mellitus; however, the mechanism remains unclear. METHODS: The effects of RYGB on postprandial responses to three different diets (low carbohydrate (CH)-rich diet, high CH-rich diet, and fat-rich diet) of different nutritional composition in a Goto-Kakizaki (GK) diabetic rat model were assessed by measuring glucose tolerance, insulin resistance, incretin responses, and bile acid (BA) metabolism...
May 2, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29704228/a-prospective-randomized-controlled-trial-of-the-metabolic-effects-of-sleeve-gastrectomy-with-transit-bipartition
#11
Fernanda R Azevedo, Sergio Santoro, Maria L Correa-Giannella, Marcos T Toyoshima, Daniel Giannella-Neto, Daniela Calderaro, Danielle M Gualandro, Pai C Yu, Bruno Caramelli
PURPOSE: To compare the effects of the sleeve gastrectomy with transit bipartition (SG + TB) procedure with standard medical therapy (SMT) in mildly obese patients with type II diabetes (T2D). METHODS: This is a prospective, randomized, controlled trial. Twenty male adults, ≤ 65 years old, with T2D, body mass index (BMI) > 28 kg/m2 and < 35 kg/m2 , and HbA1c level > 8% were randomized to SG + TB or to SMT. Outcomes were the remission in the metabolic and cardiovascular risk variables up to 24 months...
April 27, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29689362/anorectic-response-to-the-trichothecene-t-2-toxin-correspond-to-plasma-elevations-of-the-satiety-hormone-glucose-dependent-insulinotropic-polypeptide-and-peptide-yy-3-36
#12
Kun Sheng, Hua Zhang, Jianming Yue, Wei Gu, Chao Gu, Haibin Zhang, Wenda Wu
T-2 toxin, a potent type A trichothecene mycotoxin, is produced by various Fusarium species and can negatively impact animal and human health. Although anorexia induction is a common hallmark of T-2 toxin-induced toxicity, the underlying mechanisms for this adverse effect are not fully understood. The goal of this study was to determine the roles of two gut satiety hormones, glucose-dependent insulinotropic polypeptide (GIP) and Peptide YY3-36 (PYY3-36 ) in anorexia induction by T-2 toxin. Elevations of plasma GIP and PYY3-36 markedly corresponded to anorexia induction following oral exposure to T-2 toxin using a nocturnal mouse anorexia model...
April 21, 2018: Toxicology
https://www.readbyqxmd.com/read/29687583/regular-low-calorie-sweetener-consumption-is-associated-with-increased-secretion-of-glucose-dependent-insulinotropic-polypeptide
#13
Chee W Chia, Michelle Shardell, Kristofer S Gravenstein, Olga D Carlson, Eleanor M Simonsick, Luigi Ferrucci, Josephine M Egan
Low-calorie sweeteners (LCSs) are widely used for weight control despite limited evidence of their effectiveness and studies linking LCS consumption with incident obesity. We tested the hypothesis that regular LCS consumption is associated with higher postprandial glucose-dependent insulinotropic polypeptide (GIP) secretion, which has been linked to obesity. We used data from participants in the Baltimore Longitudinal Study of Aging who had completed a diet diary, had at least one visit during which they underwent an oral glucose tolerance test (OGTT), and had no diabetes...
April 23, 2018: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29678867/effect-of-the-duodenal-jejunal-bypass-liner-on-glycemic-control-in-patients-with-type-2-diabetes-with-obesity-a-meta-analysis-with-secondary-analysis-on-weight-loss-and-hormonal-changes
#14
REVIEW
Pichamol Jirapinyo, Andrea V Haas, Christopher C Thompson
OBJECTIVE: Duodenal-jejunal bypass liner (DJBL) is an endoscopic device that may mimic small bowel mechanisms of Roux-en-Y gastric bypass (RYGB). Previous studies have demonstrated the efficacy of DJBL at inducing weight loss. We assessed the effect of DJBL on glycemic control in patients with type 2 diabetes (T2D) with obesity. RESEARCH DESIGN AND METHODS: Data sources included MEDLINE, EMBASE, and Web of Science through 1 July 2017. Included were published studies that assessed DJBL outcomes in obese T2D patients...
May 2018: Diabetes Care
https://www.readbyqxmd.com/read/29673130/effects-of-gip-on-regional-blood-flow-during-normoglycemia-and-hyperglycemia-in-anesthetized-rats
#15
Xiang Gao, Andreas Lindqvist, Monica Sandberg, Leif Groop, Nils Wierup, Leif Jansson
The incretin hormone glucose-dependent insulinotropic polypeptide (GIP) potentiates glucose-stimulated insulin secretion, and affects β-cell turnover. This study aimed at evaluating if some of the beneficial effects of GIP on glucose homeostasis can be explained by modulation of islet blood flow. Anesthetized Sprague-Dawley rats were infused intravenously with different doses of GIP (10, 20, or 60 ng/kg*min) for 30 min. Subsequent organ blood flow measurements were performed with microspheres. In separate animals, islets were perfused ex vivo with GIP (10-6 -10-12  mol/L) during normo- and hyperglycemia and arteriolar responsiveness was recorded...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29672742/older-subjects-with-%C3%AE-cell-dysfunction-have-an-accentuated-incretin-release
#16
José de Jesús Garduno-Garcia, Amalia Gastaldelli, Ralph A DeFronzo, Raweewan Lertwattanarak, Jens J Holst, Nicolas Musi
Objective: Insulin secretion declines with age and this contributes to the increased risk of developing impaired glucose tolerance (IGT) and type 2 diabetes mellitus (T2DM) in older subjects. Insulin secretion is regulated by the incretin hormones glucagon-like peptide (GLP) 1 and glucose-dependent insulinotropic peptide (GIP). Here we tested the hypotheses that incretin release is reduced in older subjects, and that this decline is associated with β-cell dysfunction. Research Design: 40 young (25±3 y) and 53 older (74±7 y) lean non-diabetic subjects underwent a 2 h oral glucose tolerance test (OGTT)...
April 16, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29656109/bile-acids-are-important-direct-and-indirect-regulators-of-the-secretion-of-appetite-and-metabolism-regulating-hormones-from-the-gut-and-pancreas
#17
Rune E Kuhre, Nicolai J Wewer Albrechtsen, Olav Larsen, Sara L Jepsen, Emilie Balk-Møller, Daniel B Andersen, Carolyn F Deacon, Kristina Schoonjans, Frank Reimann, Fiona M Gribble, Reidar Albrechtsen, Bolette Hartmann, Mette M Rosenkilde, Jens J Holst
OBJECTIVE: Bile acids (BAs) facilitate fat absorption and may play a role in glucose and metabolism regulation, stimulating the secretion of gut hormones. The relative importance and mechanisms involved in BA-stimulated secretion of appetite and metabolism regulating hormones from the gut and pancreas is not well described and was the purpose of this study. METHODS: The effects of bile acids on the secretion of gut and pancreatic hormones was studied in rats and compared to the most well described nutritional secretagogue: glucose...
March 17, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29627317/intestinal-cart-is-a-regulator-of-gip-and-glp-1-secretion-and-expression
#18
L Shcherbina, A Lindqvist, A-H Thorén Fischer, E Ahlqvist, E Zhang, S E Falkmer, E Renström, J Koffert, H Honka, N Wierup
Impaired incretin effect is a culprit in Type 2 Diabetes. Cocaine- and amphetamine-regulated transcript (CART) is a regulatory peptide controlling pancreatic islet hormone secretion and beta-cell survival. Here we studied the potential expression of CART in enteroendocrine cells and examined the role of CART as a regulator of incretin secretion and expression. CART expression was found in glucose-dependent insulinotropic polypeptide (GIP)-producing K-cells and glucagon-like peptide-1 (GLP-1)-producing L-cells in human duodenum and jejunum and CART levels were increased 60 min after a meal in humans...
April 5, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29626232/a-pre-meal-of-whey-proteins-induces-differential-effects-on-glucose-and-lipid-metabolism-in-subjects-with-the-metabolic-syndrome-a-randomised-cross-over-trial
#19
Ann Bjørnshave, Jens Juul Holst, Kjeld Hermansen
PURPOSE: Postprandial lipaemia (PPL), an independent risk factor for cardiovascular disease, is affected by composition and timing of meals. We evaluated if whey proteins (WP) consumed as a pre-meal before a fat-rich meal reduce postprandial triglyceride (TG) and apolipoprotein B-48 (ApoB-48) responses in subjects with the metabolic syndrome (MeS). METHODS: An acute, randomised, cross-over trial was conducted. 20 subjects with MeS consumed a pre-meal of 0, 10 or 20 g WP 15 min prior to a fat-rich meal...
April 6, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29620597/early-serum-gut-hormone-concentrations-associated-with-time-to-full-enteral-feedings-in-preterm-infants
#20
Kristen H Shanahan, Xinting Yu, Laura G Miller, Steven D Freedman, Camilia R Martin
OBJECTIVES: The primary objective of this study was to evaluate early postnatal serum gut hormone concentrations in preterm infants as predictors of time to full enteral feedings. The secondary objective was to identify infant characteristics and nutritional factors that modulate serum gut hormone concentrations and time to full enteral feedings. METHODS: Sixty-four preterm infants less than 30 weeks of gestation were included in this retrospective cohort study...
April 3, 2018: Journal of Pediatric Gastroenterology and Nutrition
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