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Glucagon-like pepti...
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Halim, Abdul,1983-Uppsala universitet,Gastroenterologi/hepatologi
(author)
Glucagon-like peptide-1 inhibits prandial gastrointestinal motility through myenteric neuronal mechanisms in humans
- Article/chapterEnglish2018
Publisher, publication year, extent ...
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2017-11-21
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The Endocrine Society,2018
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-334892
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-334892URI
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https://doi.org/10.1210/jc.2017-02006DOI
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http://kipublications.ki.se/Default.aspx?queryparsed=id:137656881URI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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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. Human gastric, intestinal and colonic muscle strips.Interventions: Motility indices (MI) obtained before and during infusion of saline or GLP-1 were compared. Plasma GLP-1 and glucagon-like peptide-2 (GLP-2) measured by radioimmunoassay. Gastrointestinal muscle strips, pre-contracted with bethanechol/electric field stimulation (EFS), investigated for GLP-1- or ROSE-010-induced relaxation. GLP-1, GLP-2 and their receptors localized by immunohistochemistry. Action mechanisms studied employing exendin(9-39)amide, Lω-nitro-monomethylarginine (L-NMMA), 2´,5´-dideoxyadenosine (DDA), tetrodotoxin (TTX).Main outcome measures: Hypothesize postprandial gastric relaxation induced by GLP-1, the mechanism of which intrinsic neuronally-mediated.Results: Food intake increased MI to 6.4±0.3 (antrum), 5.7±0.4 (duodenum) and 5.9±0.2 (jejunum). GLP-1 administered intravenously raised plasma GLP-1, but not GLP-2. GLP-1 0.7 pmol/kg·min significantly suppressed MI to 4.6±0.2, 4.7±0.4 and 5.0±0.2, respectively, while 1.2 pmol/kg·min suppressed corresponding MI to 5.4±0.2, 4.4±0.3 and 5.4±0.3 (p<0.0001-0.005). GLP-1 and ROSE-010 prevented bethanechol- or EFS-induced muscle contractions (p <0.005-0.05). Inhibitory responses to GLP-1 and ROSE-10 were blocked by exendin(9-39)amide, L-NMMA, DDA or TTX (all p <0.005-0.05). GLP-1 and GLP-2 were localized to epithelial cells; GLP-1 also in myenteric neurons. GLP-1R and GLP-2R were localized at myenteric neurons but not muscle, GLP-1R also in epithelial cells.Conclusions: GLP-1 inhibits postprandial motility through GLP-1R at myenteric neurons, involving nitrergic and cAMP-dependent mechanisms.
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Degerblad, MarieKarolinska Institutet
(author)
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Sundbom, MagnusUppsala universitet,Gastrointestinalkirurgi(Swepub:uu)magsundb
(author)
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Karlbom, UrbanUppsala universitet,Gastrointestinalkirurgi(Swepub:uu)urbakarl
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Juul Holst, Jens
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Webb, Dominic-LucUppsala universitet,Gastroenterologi/hepatologi(Swepub:uu)domwe127
(author)
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Hellström, Per M.,1954-Uppsala universitet,Gastroenterologi/hepatologi(Swepub:uu)perhe742
(author)
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Uppsala universitetGastroenterologi/hepatologi
(creator_code:org_t)
Related titles
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In:Journal of Clinical Endocrinology and Metabolism: The Endocrine Society103:2, s. 575-5850021-972X1945-7197
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