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Glp-2

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https://www.readbyqxmd.com/read/29329748/oral-bifidobacterium-longum-expressing-glp-2-improves-nutrient-assimilation-and-nutritional-homeostasis-in-mice
#1
Qian Zhang, Mengge Liu, Shiyu Li, Zhenrui Xu, Jiajia Wang, Yuzhe Wang, Zhengbin Fei, Wenhua Huang, Hanxiao Sun
Bifidobacterium has been developed for the oral delivery of peptides and has the added beneficial effect on our bodies through its probiotic properties. Here, we utilize Bifidobacterium as a delivery system to orally deliver Glucagon like peptide-2 (GLP-2). We constructed vector derived from pET-31b(+) to construct a Bifidobacterium longum expressing GLP-2. We then determined the bioactivity of recombinant Bifidobacterium in Caco-2 cells. Finally, we quantified newly synthesized ApoB48 and chylomicron production in mice infused with exogenous GLP-2 or Bifidobacterium expressing GLP-2...
January 9, 2018: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/29231791/glucagon-like-peptide-2-and-neoplasia-a-systematic-review
#2
Linea Landgrebe Ring, Nikolaj Nerup, Palle Bekker Jeppesen, Lars Bo Svendsen, Michael Patrick Achiam
Glucagon like peptide-2 is synthesized from enteroendocrine L cells primarily located in the ileum and large intestine. GLP-2 stimulates crypt cell proliferation, increases intestinal blood flow, enhances gut barrier function, induces mucosal healing, and exerts an anti-apoptotic effect. Due to these effects GLP-2 is used in the treatment of short bowel syndrome (SBS). Areas covered The aim of this systematic review was to provide information on the potential risk of intestinal neoplasia in patients receiving treatment with GLP-2...
December 12, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29202475/discovery-characterization-and-clinical-development-of-the-glucagon-like-peptides
#3
Daniel J Drucker, Joel F Habener, Jens Juul Holst
The discovery, characterization, and clinical development of glucagon-like-peptide-1 (GLP-1) spans more than 30 years and includes contributions from multiple investigators, science recognized by the 2017 Harrington Award Prize for Innovation in Medicine. Herein, we provide perspectives on the historical events and key experimental findings establishing the biology of GLP-1 as an insulin-stimulating glucoregulatory hormone. Important attributes of GLP-1 action and enteroendocrine science are reviewed, with emphasis on mechanistic advances and clinical proof-of-concept studies...
December 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29177486/glucagon-like-peptide-1-inhibits-prandial-gastrointestinal-motility-through-myenteric-neuronal-mechanisms-in-humans
#4
Md Abdul Halim, Marie Degerblad, Magnus Sundbom, Urban Karlbom, Jens Juul Holst, Dominic-Luc Webb, Per M Hellström
Context: Glucagon-like peptide-1 (GLP-1) secretion from L-cells and postprandial inhibition of gastrointestinal motility. Objective: Investigate whether physiological plasma concentrations of GLP-1 can inhibit human postprandial gastrointestinal motility; determine target mechanism of GLP-1 and analogue ROSE-010 action. Design: Single-blind parallel study. Setting: University research laboratory. Participants: Healthy volunteers investigated with antroduodenojejunal manometry...
November 21, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29154190/-epicatechin-protects-the-intestinal-barrier-from-high-fat-diet-induced-permeabilization-implications-for-steatosis-and-insulin-resistance
#5
Eleonora Cremonini, Ziwei Wang, Ahmed Bettaieb, Ana M Adamo, Elena Daveri, David A Mills, Karen M Kalanetra, Fawaz G Haj, Sidika Karakas, Patricia I Oteiza
Increased permeability of the intestinal barrier is proposed as an underlying factor for obesity-associated pathologies. Consumption of high fat diets (HFD) is associated with increased intestinal permeabilization and increased paracellular transport of endotoxins which can promote steatosis and insulin resistance. This study investigated whether dietary (-)-epicatechin (EC) supplementation can protect the intestinal barrier against HFD-induced permeabilization and endotoxemia, and mitigate liver damage and insulin resistance...
November 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/29142468/glucagon-like-peptide-2-modulates-the-nitrergic-neurotransmission-in-strips-from-the-mouse-gastric-fundus
#6
Rachele Garella, Eglantina Idrizaj, Chiara Traini, Roberta Squecco, Maria Giuliana Vannucchi, Maria Caterina Baccari
AIM: To investigate whether glucagon-like peptide-2 (GLP-2) influences the neurally-induced responses in gastric strips from mice, since no data are available. METHODS: For functional experiments, gastric fundal strips were mounted in organ baths containing Krebs-Henseleit solution. Mechanical responses were recorded via force-displacement transducers, which were coupled to a polygraph for continuous recording of isometric tension. Electrical field stimulation (EFS) was applied via two platinum wire rings through which the preparation was threaded...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29140465/short-chain-arabinoxylans-prepared-from-enzymatically-treated-wheat-grain-exert-prebiotic-effects-during-the-broiler-starter-period
#7
N Yacoubi, L Saulnier, E Bonnin, E Devillard, V Eeckhaut, L Rhayat, R Ducatelle, F Van Immerseel
Carbohydrate-degrading multi-enzyme preparations (MEP) are used to improve broiler performances. Their mode of action is complex and not fully understood. In this study, we compared the effect of water-soluble fractions isolated at the pilot scale from wheat grain incubated with (WE) and without (WC) MEP. The fractions were incorporated in a wheat-based diet (0.1% w/w) to feed Ross PM3 broilers and compared with a non-supplemented control group (NC). The body weight gain (BWG), feed intake (FI), and feed conversion ratio (FCR) until d 14 were determined...
November 10, 2017: Poultry Science
https://www.readbyqxmd.com/read/29101649/intestinal-incretins-and-the-regulation-of-bone-physiology
#8
Walter Ramsey, Carlos M Isales
Although originally identified as modulators of nutrient absorption, the gut hormones gastric inhibitory polypeptide (GIP), glucagon-like peptide-1 (GLP-1), and glucagon-like peptide-2 (GLP-2) have also been found to play an important role in the regulation of bone turnover. These "incretin" hormones promote bone anabolism by stimulating osteoblast differentiation as well as increasing osteoblast longevity. In addition, GIP and perhaps GLP-2 attenuate the activity of osteoclastic cells, leading to a net increase in bone deposition and ultimately increasing bone mass...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29097359/customization-of-bilio-pancreatic-limb-length-to-modulate-and-sustain-anti-diabetic-effect-of-gastric-bypass-surgery
#9
Atanu Pal, David B Rhoads, Ali Tavakkoli
BACKGROUND: Although Roux-en-Y Gastric Bypass (RYGB) remains the most effective treatment for obesity and Type 2 Diabetes (T2D), many patients fail to achieve remission, or relapse. Increasing intestinal limb lengths of RYGB may improve outcomes, but the mechanistic basis for this remains unclear. We hypothesize Bilio-Pancreatic (BP) limb length modulates the anti-diabetic effect of RYGB. METHODS: Rats underwent RYGB with a 20-cm (RYGB-20cm) or 40-cm (RYGB-40cm) BP limb, and were compared to control animals...
November 2, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29074485/animal-models-of-chemotherapy-induced-mucositis-translational-relevance-and-challenges
#10
Per T Sangild, René Liang Shen, Peter Erik Lotko Pontoppidan, Mathias Rathe
Chemotherapy for cancer patients induces damaging tissue reactions along the epithelium of the gastrointestinal tract (GIT). This chemotherapy-induced mucositis (CIM) is a serious side effect of cytotoxic drugs and several animal models of CIM have been developed to help understand the progression of CIM, and how to prevent it. Animal models allow highly controlled experimental conditions, detailed organ (e.g. GIT) insights, standardized, clinically-relevant treatment regimens and discovery of new biomarkers...
October 26, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29034530/gene-expression-and-morphological-changes-in-the-intestinal-mucosa-associated-with-increased-permeability-induced-by-short-term-fasting-in-chickens
#11
S Gilani, G S Howarth, G Nattrass, S M Kitessa, R Barekatain, R E A Forder, C D Tran, R J Hughes
Short-term fasting for 4.5 and 9 hr has been demonstrated to increase intestinal permeability (IP) in chickens. This study aimed to investigate the effects of 0, 4.5, 9 and 19.5 hr fasting on intestinal gene expression and villus-crypt architecture of enterocytes in jejunal and ileal samples. On day 38, Ross-308 male birds were fasted according to their group and then euthanised. Two separate intestinal sections (each 2 cm long, jejunum and ileum) were collected. One section was utilised for villus height and crypt depth measurements...
October 16, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28973164/differential-impact-of-glucose-administered-intravenously-and-orally-on-circulating-mir-375-levels-in-human-subjects
#12
Xin Yan, Zhen Wang, Sidse Westberg-Rasmussen, Marcel Tarbier, Thomas Rathjen, Sudhir G Tattikota, Bailey C E Peck, Matt Kanke, Claus Oxvig, Jan Frystyk, Jakob Starup-Linde, Praveen Sethupathy, Marc R Friedländer, Søren Gregersen, Matthew N Poy
Background: To date, numerous nucleic acid species have been detected in the systemic circulation including microRNAs (miRNAs); however, their functional role in this compartment remains unclear. Objective: The aim of this study was to determine whether systemic levels of miRNAs abundant in blood, including the neuroendocrine tissue-enriched miR-375, are altered in response to a glucose challenge. Design: Twelve healthy males were recruited for an acute crossover study that consisted of two tests each following an 8-hour fasting period...
October 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28948296/gip-3-30-nh2-is-an-efficacious-gip-receptor-antagonist-in-humans-a-randomised-double-blinded-placebo-controlled-crossover-study
#13
Lærke S Gasbjerg, Mikkel B Christensen, Bolette Hartmann, Amalie R Lanng, Alexander H Sparre-Ulrich, Maria B N Gabe, Flemming Dela, Tina Vilsbøll, Jens J Holst, Mette M Rosenkilde, Filip K Knop
AIMS/HYPOTHESIS: Glucose-dependent insulinotropic polypeptide (GIP) is an incretin hormone secreted postprandially from enteroendocrine K cells, but despite therapeutically interesting effects, GIP physiology in humans remains incompletely understood. Progress in this field could be facilitated by a suitable GIP receptor antagonist. For the first time in humans, we investigated the antagonistic properties of the naturally occurring GIP(3-30)NH2 in in vivo and in in vitro receptor studies...
September 25, 2017: Diabetologia
https://www.readbyqxmd.com/read/28943949/sitagliptin-a-dipeptidyl-peptidase-4-inhibitor-suppresses-cxcl5-and-sdf-1-and-does-not-accelerate-intestinal-neoplasia-formation-in-apc-min-mice-fed-a-high-fat-diet
#14
Kaori Fujiwara, Takuya Inoue, Yujiro Henmi, Yoshimasa Hirata, Yutaka Naka, Azusa Hara, Kazuki Kakimoto, Sadaharu Nouda, Toshihiko Okada, Ken Kawakami, Toshihisa Takeuchi, Kazuhide Higuchi
The relationship between type 2 diabetes mellitus and intestinal neoplasia has been shown epidemiologically. A high-fat diet (HFD) is also known to promote insulin resistance, which is a risk factor for intestinal neoplasia. Dipeptidyl peptidase-4 (DPP-4) inhibitors are used in the clinic for the treatment of type 2 diabetes and also to prolong the effects of glucagon-like peptide-1 (GLP-1). However, since the intestinotrophic hormone GLP-2 and chemokines, such as CXCL5 and stromal cell-derived factor-1 (SDF-1), are also substrates of DPP-4, DPP-4 inhibitors may increase the risk of intestinal carcinogenesis...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28888594/plasma-concentrations-of-glucagon-like-peptide-1-and-2-in-calves-fed-calf-starters-containing-lactose
#15
Y Inabu, A Saegusa, K Inouchi, S Koike, M Oba, T Sugino
The objective of this study was to evaluate the effects of lactose inclusion in calf starters on plasma glucagon-like peptide (GLP)-1 and GLP-2 concentrations and gastrointestinal tract development in calves. Holstein bull calves (n = 45) were raised on an intensified nursing program using milk replacer containing 28.0% CP and 15.0% fat, and were fed a texturized calf starter containing 0 (control), 5.0 (LAC5), or 10.0% (LAC10; n = 15 for each treatment) lactose on a DM basis. Lactose was included in the starter by partially replacing dry ground corn in pelleted portion of the starter...
November 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28870797/detailed-characterisation-of-stc-1-cells-and-the-pgip-neo-sub-clone-suggests-the-incretin-hormones-are-translationally-regulated
#16
Anna L Gillespie, Xiaobei Pan, Anna Marco-Ramell, Caroline Meharg, Brian D Green
STC-1 is a heterogeneous plurihormonal cell line producing several prominent gut peptide hormones. pGIP/Neo is a genetically selected sub-clone of STC-1 with augmented levels of glucose-dependent insulinotropic peptide (GIP). Morphometric parameters, hormone concentrations, mRNA transcripts, hormone immunocytochemistry and nutrient utilisation/production of these two cell lines were compared. Proglucagon-derived peptides (Glucagon-like peptide-1 (GLP-1) and - 2(GLP-2)) were lower in sub-clone cells than progenitor cells...
October 2017: Peptides
https://www.readbyqxmd.com/read/28842383/glucagon-like-peptide-2-prevents-down-regulation-of-intestinal-multidrug-resistance-associated-protein-2-and-p-glycoprotein-in-endotoxemic-rats
#17
Maite Rocío Arana, Guillermo Nicolás Tocchetti, Felipe Zecchinati, Ana Sofía Londero, Camila Dominguez, Virginia Perdomo, Juan Pablo Rigalli, Silvina Stella Maris Villanueva, Aldo Domingo Mottino
Multidrug resistance-associated protein 2 (Mrp2, ABCC2) and P-glycoprotein (P-gp, ABCB1) constitute essential components of the intestinal biochemical barrier that prevent incorporation of food contaminants, drugs or toxic metabolites into the blood stream. Endotoxemia induced in rats by administration of bacterial lipopolysaccharide (LPS) results in elevated intestinal permeability and toxicity of xenobiotics in part associated with down-regulation of expression and activity of Mrp2 and P-gp. We evaluated the protective effect of glucagon-like peptide 2 (GLP-2), a peptide hormone with enterotrophic properties, on Mrp2 and P-gp alterations induced by single i...
September 1, 2017: Toxicology
https://www.readbyqxmd.com/read/28808865/glucagon-like-peptides-1-and-2-are-involved-in-satiety-modulation-after-modified-biliopancreatic-diversion-results-of-a-pilot-study
#18
Everton Cazzo, José Carlos Pareja, Elinton Adami Chaim, Cláudio Saddy Rodrigues Coy, Daniéla Oliveira Magro
BACKGROUND: This paper aimed to evaluate the influence of modified biliopancreatic diversion (BPD) on the levels of GLP-1 and GLP-2 and correlate them with satiety regulation. METHODS: This is a pilot prospective cohort study that evaluated six mildly obese individuals with type 2 diabetes mellitus, which underwent modified BPD and were followed-up for 12 months. Levels of GLP-1 and GLP-2 after a standard meal tolerance test were determined and correlated with satiety scores obtained by means of a visual analogue scale (VAS)...
August 14, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28776152/glucose-metabolism-parameters-and-post-prandial-glp-1-and-glp-2-release-largely-vary-in-several-distinct-situations-a-controlled-comparison-among-individuals-with-crohn-s-disease-and-individuals-with-obesity-before-and-after-bariatric-surgery
#19
Daniéla Oliveira Magro, Everton Cazzo, Paulo Gustavo Kotze, Ana Carolina Junqueira Vasques, Carlos Augusto Real Martinez, Elinton Adami Chaim, Bruno Geloneze, José Carlos Pareja, Cláudio Saddy Rodrigues Coy
BACKGROUND: This study aims to compare the post-prandial curves of glucose, insulin, GLP-1, and GLP-2 among individuals with Crohn's disease (CD), obese individuals before and after bariatric surgery, and healthy controls. METHODS: This an exploratory cross-sectional study that involved five groups of patients (two groups of individuals with CD-active and inactive), bariatric patients (pre- and post-surgery, who were their own controls), and a distinct separated control group of healthy volunteers...
August 3, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28755409/a-first-in-human-pharmacodynamic-and-pharmacokinetic-study-of-a-fully-human-anti-glucagon-receptor-monoclonal-antibody-in-normal-healthy-volunteers
#20
Ana Kostic, Alexander T King, Feng Yang, Kuo-Chen Chan, George D Yancopoulos, Jesper Gromada, Joyce B Harp
AIMS: Glucagon receptor (GCGR) blockers are being investigated as potential therapeutics for type 1 and 2 diabetes. Here we report the safety, tolerability, pharmacokinetics [PK], and pharmacodynamics [PD] of REGN1193, a fully human glucagon receptor blocking monoclonal antibody from a first-in-human healthy volunteer randomized double blind trial. MATERIALS AND METHODS: Healthy men and women received single ascending doses of REGN1193 ranging from 0.05 mg/kg to 0...
July 28, 2017: Diabetes, Obesity & Metabolism
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