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https://www.readbyqxmd.com/read/28441725/sweet-taste-receptor-activation-in-the-gut-is-of-limited-importance-for-glucose-stimulated-glp-1-and-gip-secretion
#1
Monika Y Saltiel, Rune E Kuhre, Charlotte B Christiansen, Rasmus Eliasen, Kilian W Conde-Frieboes, Mette M Rosenkilde, Jens J Holst
Glucose stimulates the secretion of the incretin hormones: glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP). It is debated whether the sweet taste receptor (STR) triggers this secretion. We investigated the role of STR activation for glucose-stimulated incretin secretion from an isolated perfused rat small intestine and whether selective STR activation by artificial sweeteners stimulates secretion. Intra-luminal administration of the STR agonists, acesulfame K (3.85% w/v), but not sucralose (1...
April 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28435972/-glp-1-gip-gcg-receptor-triagonist-improves-the-cognitive-behaviors-in-triple-transgenic-mice-of-alzheimer-s-disease
#2
Juan-Juan Jiao, Christian Hölscher, Tian Li, Xue-Fan Dong, Xue-Song Qu, Yue Cao, Mei-Na Wu, Zhao-Jun Wang, Jin-Shun Qi
Alzheimer's disease (AD) is a progressively neurodegenerative disorder, which seriously affects human health but is still irreversible up to now. Recent studies indicate that type 2 diabetes mellitus (T2DM) is an important risk factor for AD, and the drugs used for treatment of T2DM have shown some neuroprotective effects in the treatment of AD. Glucagon-like peptide-1 (GLP-1)/ glucose-dependent insulinotropic polypeptide (GIP)/glucagon (Gcg) receptor Triagonist is a new monomeric polypeptide equally activating the GLP-1/GIP/Gcg receptors, which is built on the basis of GLP-1/Gcg receptor coagonist core sequence, and incorporated with partial amino acids of GIP...
April 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28430907/food-intake-affects-sperm-egg-fusion-through-the-gip-psg17-axis-in-mice
#3
Tatsunori Shimizu, Takehiro Sato, Katsushi Tsukiyama, Hiroki Fujita, Shunsuke Kato, Manabu Hoizumi, Hiromitsu Shirasawa, Takuma Narita, Yukihiro Terada, Yutaka Seino, Yuichiro Yamada
In addition to overeating, starvation also reduces fecundity in mammals. However, little is known about the molecular mechanisms linking food intake to fertility, especially in males. Gastric inhibitory polypeptide (GIP), which is released from intestinal K-cells after meal ingestion, stimulates insulin secretion from pancreatic β-cells through the action of incretin and has several extra-pancreatic effects. Here, we identified GIP receptor (Gipr) expression in mouse spermatids. Microarray analysis revealed that pregnancy-specific glycoprotein 17 (Psg17), a potential CD9-binding partner, was significantly decreased in GIP receptor-knockout (Gipr-/-) testes...
April 19, 2017: Endocrinology
https://www.readbyqxmd.com/read/28429513/distribution-and-hormonal-characterization-of-primary-murine-l-cells-throughout-the-gastrointestinal-tract
#4
Kazuyo Suzuki, Kanako Iwasaki, Yuki Murata, Norio Harada, Shunsuke Yamane, Akihiro Hamasaki, Kimitaka Shibue, Erina Joo, Akiko Sankoda, Yuta Fujiwara, Yoshitaka Hayashi, Nobuya Inagaki
AIMS/INTRODUCTION: Glucagon-like peptide-1 (GLP-1) secreted from enteroendocrine L-cells is an incretin that potentiates insulin secretion and is already applied in therapies for type 2 diabetes. However, detailed examination of L-cells throughout the gastrointestinal (GI) tract remains unclear, because of difficulties in purifying scattered L-cells from other cells. In the present study, we identified characteristics of L-cells of the upper small intestine (UI), the lower small intestine (LI) and the colon using glucagon (Gcg)-green fluorescent protein (GFP)-expressing mice that express GFP driven by the proglucagon promoter...
April 20, 2017: Journal of Diabetes Investigation
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
#5
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/28421793/effects-of-a-high-fat-meal-on-postprandial-incretin-responses-appetite-scores-and-ad-libitum-energy-intake-in-women-with-obesity
#6
Fernanda Rodrigues O Penaforte, Camila C Japur, Rosa W Diez-Garcia, Paula G Chiarello
BACKGROUND: Considering the possible role of triglycerides (TG), glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) in the regulation of appetite, this study aimed to compare high fat meal-induced response of GIP and GLP-1, appetite scores and ad libitum energy intake in women with obesity, according to postprandial increment in triglyceridemia (∆TG).  Methods: Thirty-three no-diabetic women (BMI = 35.0 ± 3.2 kg.m-2) were divided into two groups: Group with ∆TG ≤ median were called "Low TG change -LTG" and ∆TG > median, "High TG change - HTG"...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28413961/incretins-and-lipid-metabolism
#7
Vasilis Tsimihodimos, Moses S Elisaf
Backgound: Recent findings indicate that incretin hormones and incretin-based therapies may affect the metabolism of lipoproteins, although the corresponding mechanisms are not clearly defined. OBJECTIVE: To summarize the available data on the mechanisms linking incretins with the characteristics of serum lipoproteins and discuss the clinical implications of these relationships. METHODS: PubMed was searched using the terms "incretins", "GLP-1", "GIP" and "lipids", "dyslipidemia", "triglycerides", "apolipoprotein B48"...
April 14, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28393187/generation-and-characterization-of-induced-pluripotent-stem-cells-from-guinea-pig-fetal-fibroblasts
#8
Yuehong Wu, Ouyang Li, Chengwen He, Yong Li, Min Li, Xiaoming Liu Liu, Yujiong Wang, Yulong He
Induced pluripotent stem cells (iPS) represent an important tool to develop disease‑modeling assays, drug testing assays and cell‑based replacement therapies. The application of iPS in these fields requires the development of suitable animal models. Of the suitable species, guinea pigs are particularly important and offer significant advantages. Successful iPS generation has been accomplished in a number of species; however, it has not been reported in the guinea pig. The present study successfully generated iPS from guinea pigs (giPS) using single polycistronic virus transduction with mouse octamer‑binding transcription factor 4 (Oct4), sex determining region Y‑box 2 (Sox2), Kruppel‑like factor 4 and c‑Myc...
April 4, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28389968/predictors-of-left-ventricular-remodeling-after-st-elevation-myocardial-infarction
#9
Tom Hendriks, Minke H T Hartman, Pieter J J Vlaar, Niek H J Prakken, Yldau M Y van der Ende, Chris P H Lexis, Dirk J van Veldhuisen, Iwan C C van der Horst, Erik Lipsic, Robin Nijveldt, Pim van der Harst
Adverse left ventricular (LV) remodeling after acute ST-elevation myocardial infarction (STEMI) is associated with morbidity and mortality. We studied clinical, biochemical and angiographic determinants of LV end diastolic volume index (LVEDVi), end systolic volume index (LVESVi) and mass index (LVMi) as global LV remodeling parameters 4 months after STEMI, as well as end diastolic wall thickness (EDWT) and end systolic wall thickness (ESWT) of the non-infarcted myocardium, as compensatory remote LV remodeling parameters...
April 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28385175/on-the-role-of-the-gut-in-diabetic-hyperglucagonaemia
#10
Asger Lund
Patients with type 2 diabetes are characterised not only by compromised insulin secretion and action, but also by elevated plasma concentrations of the 29-amino acid peptide hormone glucagon, which generally is thought of as a pancreas-derived hormone (produced in and secreted from alpha cells in the islet of Langerhans). In patients with diabetes, circulating glucagon concentrations are elevated in the fasting state and fail to decrease appropriately or even increase in response to ingestion of nutrients. Glucagon is known to be a potent stimulator of hepatic glucose production, and, thus, the elevated glucagon concentrations in diabetes contribute decisively to the predominating trait of patients with diabetes namely hyperglycaemia...
April 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28378740/a-cd47-associated-super-enhancer-links-pro-inflammatory-signalling-to-cd47-upregulation-in-breast-cancer
#11
Paola A Betancur, Brian J Abraham, Ying Y Yiu, Stephen B Willingham, Farnaz Khameneh, Mark Zarnegar, Angera H Kuo, Kelly McKenna, Yoko Kojima, Nicholas J Leeper, Po Ho, Phung Gip, Tomek Swigut, Richard I Sherwood, Michael F Clarke, George Somlo, Richard A Young, Irving L Weissman
CD47 is a cell surface molecule that inhibits phagocytosis of cells that express it by binding to its receptor, SIRPα, on macrophages and other immune cells. CD47 is expressed at different levels by neoplastic and normal cells. Here, to reveal mechanisms by which different neoplastic cells generate this dominant 'don't eat me' signal, we analyse the CD47 regulatory genomic landscape. We identify two distinct super-enhancers (SEs) associated with CD47 in certain cancer cell types. We show that a set of active constituent enhancers, located within the two CD47 SEs, regulate CD47 expression in different cancer cell types and that disruption of CD47 SEs reduces CD47 gene expression...
April 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/28376584/a-novel-multi-epitope-vaccine-based-on-dipeptidyl-peptidase-4-prevents-streptozotocin-induced-diabetes-by-producing-anti-dpp4-antibody-and-immunomodulatory-effect-in-c57bl-6j-mice
#12
Zhixin Li, Jinzhi Fang, Rui Jiao, Xiaomin Wei, Yanjie Ma, Xiaoran Liu, Peng Cheng, Taiming Li
Type 1 diabetes is a chronic organ-specific autoimmune disease in which selective destruction of insulin-producing β-cells leads to impaired glucose metabolism and its attendant complications. A series of Dipeptidyl peptidase 4 (DPP4) inhibitors have been developed and granted approval in the treatment of type 2 diabetes mellitus by inhibiting the enzymatic degradation of glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP). An increasing number of studies have shown the potential benefits of DPP4 inhibitors for type 1 diabetes...
March 31, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28374974/mathematical-modelling-of-glucose-dependent-insulinotropic-polypeptide-and-glucagon-like-peptide-1-following-ingestion-of-glucose
#13
Rikke M Røge, Jonatan I Bagger, Oskar Alskär, Niels R Kristensen, Søren Klim, Jens J Holst, Steen H Ingwersen, Mats O Karlsson, Filip K Knop, Tina Vilsbøll, Maria C Kjellsson
The incretin hormones, glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1), play an important role in glucose homeostasis by potentiating glucose-induced insulin secretion. Furthermore, GLP-1 has been reported to play a role in glucose homeostasis by inhibiting glucagon secretion and delaying gastric emptying. As the insulinotropic effect of GLP-1 is preserved in patients with type 2 diabetes (T2D), therapies based on GLP-1 have been developed in recent years, and these have proven to be efficient in the treatment of T2D...
April 4, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28371338/oral-administration-of-nasturtium-affects-peptide-yy-secretion-in-male-subjects
#14
Sonja Schiess, Stefanie Platz, Margrit Kemper, Monika Schreiner, Inga Mewis, Sascha Rohn, Christiane Bumke-Vogt, Olga Pivovarova, Andreas F H Pfeiffer
SCOPE: Nasturtium plants contain the glucosinolate glucotropaeolin and its corresponding breakdown product benzyl isothiocyanate (BITC), the latter being intensively studied with regard to cancer chemoprevention and anti-inflammatory properties. In addition, recent research has shown that isothiocyanates are able to activate the release of several gut hormones in vitro and in rodent studies. Here, we tested the effects of a dietary nasturtium administration on circulating levels of gut hormones in humans...
March 31, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28371189/effect-of-glp-1-and-gip-on-c-peptide-secretion-after-glucagon-or-mixed-meal-tests-significance-in-assessing-beta-cell-function-in-diabetes
#15
C Guglielmi, R Del Toro, A Lauria, A R Maurizi, A Cappelli, S Angeletti, J M Lachin, P Pozzilli
BACKGROUND: The aim of the study was to investigate the different β cell responses after a glucagon stimulation test (GST) versus mixed meal tolerance test (MMTT). METHODS: We carried out GST and MMTT in 10 healthy people (aged 25-40 yrs) and measured C-peptide, gastric inhibitory peptide (GIP) and glucagon like peptide 1 (GLP1) at different time points after the administration of 1 mg i.v. glucagon for GST or a liquid mixed meal for MMTT. RESULTS: The GST stimulated C-peptide showed a mean increase of 147...
March 31, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28369078/the-effect-of-meal-frequency-in-a-reduced-energy-regimen-on-the-gastrointestinal-and-appetite-hormones-in-patients-with-type-2-diabetes-a-randomised-crossover-study
#16
Lenka Belinova, Hana Kahleova, Hana Malinska, Ondrej Topolcan, Jindra Windrichova, Olena Oliyarnyk, Ludmila Kazdova, Martin Hill, Terezie Pelikanova
BACKGROUND: Appetite and gastrointestinal hormones (GIHs) participate in energy homeostasis, feeding behavior and regulation of body weight. We demonstrated previously the superior effect of a hypocaloric diet regimen with lower meal frequency (B2) on body weight, hepatic fat content, insulin sensitivity and feelings of hunger compared to the same diet divided into six smaller meals a day (A6). Studies with isoenergetic diet regimens indicate that lower meal frequency should also have an effect on fasting and postprandial responses of GIHs...
2017: PloS One
https://www.readbyqxmd.com/read/28366809/effect-of-d-ala-2-gip-a-stable-gip-receptor-agonist-on-mptp-induced-neuronal-impairments-in-mice
#17
Mahip K Verma, Rajan Goel, Krishnadas Nandakumar, Kumar V S Nemmani
The aim of the present study was to evaluate the ability of D-Ala(2)GIP, a gastric inhibitory polypeptide (GIP) receptor agonist, to attenuate the behavioral phenotype of Parkinson's disease caused by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) administration in mice. In the behavioral studies, MPTP administration led to spontaneous locomotor activity deficits, impaired rotarod performance, akinesia, muscular rigidity and increased tremor amplitude, which was attenuated by pretreatment with D-Ala(2)GIP (50-100 nmol/kg, i...
June 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28351157/synthetic-and-phytocompounds-based-dipeptidyl-peptidase-iv-dpp-iv-inhibitors-for-therapeutics-of-diabetes
#18
Anand-Krishna Singh, Rameshwar Jatwa, Ashok Purohit, Heera Ram
Currently antidiabetic therapeutic strategies are mainly based on synthetic hypoglycemic agent. Antidiabetic drugs are associated with significant adverse effects of hypoglycemia, dysfunction of insulin and weight gain. Nowadays, the novel Dipeptidyl peptidase-IV (DPP-IV) inhibitors unique approach for the management of diabetes has been considered to be safe, as DPP-IV inhibitors reduce blood glucose level by monitoring hyperglycemia including positive effects on body weight as it remains neutral, improves glycated hemoglobin levels and do not induce hypoglycemia...
March 29, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28348564/lower-serum-vitamin-d-metabolite-levels-in-relation-to-circulating-cytokines-chemokines-and-metabolic-hormones-in-pregnant-women-with-hypertensive-disorders
#19
Ramu Adela, Roshan M Borkar, Navneeta Mishra, Murali Mohan Bhandi, Gayatri Vishwakarma, B Aparna Varma, Srinivas Ragampeta, Sanjay K Banerjee
The aim of this study was to investigate whether lower serum vitamin D metabolite levels were associated with altered cytokine/chemokine and metabolic hormone levels in three different hypertensive disorders in pregnancy (HDP). Healthy pregnancy (n = 30) and hypertensive disorders in pregnancy (HDP) (n = 30), i.e., gestational hypertension (GH), preeclampsia (PE), and eclampsia (EC) subjects were enrolled. Vitamin D metabolites were measured by UPLC/APCI/HRMS method. Circulatory 27 cytokines/chemokines and 10 metabolic hormones were measured...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28342971/a-novel-dual-glp-1-gip-receptor-agonist-alleviates-cognitive-decline-by-re-sensitizing-insulin-signaling-in-the-alzheimer-icv-stz-rat-model
#20
Lijuan Shi, Zhihua Zhang, Lin Li, Christian Hölscher
Alzheimer's disease (AD) is a progressive neurodegenerative disorder, accompanied by memory loss and cognitive impairments, and there is no effective treatment for it at present. Since type 2 diabetes (T2DM) has been identified as a risk factor for AD, the incretins glucagon-like peptide 1 (GLP-1) and glucose dependent insulinotropic polypeptide (GIP), promising antidiabetic agents for the treatment of type 2 diabetes, have been tested in models of neurodegenerative disease including AD and achieved good results...
March 23, 2017: Behavioural Brain Research
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