Title : Mechanisms underlying metformin-induced secretion of glucagon-like peptide-1 from the intestinal L cell.

Pub. Date : 2011 Dec

PMID : 21971158






5 Functional Relationships(s)
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1 The antidiabetic drug, metformin, is known to increase circulating GLP-1 levels, although its mechanism of action is unknown. Metformin glucagon like peptide 1 receptor Homo sapiens
2 Treatment of rats with metformin (300 mg/kg, per os) or aminoimidazole carboxamide ribonucleotide (250 mg/kg, sc) increased plasma total GLP-1 over 2 h, reaching 37 +- 9 and 29 +- 9 pg/ml (P < 0.001), respectively, compared with basal (7 +- 1 pg/ml). Metformin glucagon like peptide 1 receptor Homo sapiens
3 Pretreatment with the nonspecific muscarinic antagonist, atropine (1 mg/kg, iv), decreased metformin-induced GLP-1 secretion by 55 +- 11% (P < 0.05). Metformin glucagon like peptide 1 receptor Homo sapiens
4 In contrast, pretreatment with the gastrin-releasing peptide antagonist, RC-3095 (100 mug/kg, sc), reduced the GLP-1 response to metformin, by 55 +- 6% (P < 0.01) at 30 min. Metformin glucagon like peptide 1 receptor Homo sapiens
5 These studies elucidate the mechanism underlying metformin-induced GLP-1 secretion and highlight the benefits of using metformin with dipeptidylpeptidase-IV inhibitors in patients with type 2 diabetes. Metformin glucagon like peptide 1 receptor Homo sapiens