title: Treatment of type 1 diabetic patients with glucagon-like peptide-1 (GLP-1) and GLP-1R agonists.
abstract: GLP-1 (glucagon-like peptide-1) is a peptide hormone secreted from endocrine cells in the intestinal mucosa in response to meals. The major effects of GLP-1 are to increase glucose-induced insulin secretion and reduce glucagon release, but GLP-1 also inhibits gastric emptying rate and reduces appetite and bodyweight in obese subjects. In vivo studies using animal models of type 2 diabetes and in vitro studies using human islet cells have suggested that GLP-1 or GLP-1 analogues are also able to increase beta-cell mass, but in animal models of type 1 diabetes, there is much less evidence for a beta-cell preserving effect. This review summarizes the present knowledge of GLP-1 and its analogues regarding its role as a possible treatment in patients with type 1 diabetes. The studies that address the effect of GLP-1 and GLP-1 analogues on beta-cell mass in both type 2 and type 1 diabetes, as well as the potential of GLP-1 as an adjuvant therapy in islet cell transplantation, will be reviewed. Suggestions for future studies of GLP-1 treatment in type 1 diabetes may include early treatment in order to preserve beta-cell mass and prolong the remission period, but should also take a potential insulin sparing effect and changes in the risk of hypoglycemia into account.
authors.affiliation: Department of Endocrinology, Hvidovre Hospital and University of Copenhagen, Denmark. urd.kielgast@hvh.regionh.dk
authors.forename: Urd
authors.initials: U
authors.lastname: Kielgast
authors.forename: Jens J
authors.initials: JJ
authors.lastname: Holst
authors.forename: Sten
authors.initials: S
authors.lastname: Madsbad
mesh_terms: D000818:Animals; D003922:Diabetes Mellitus, Type 1 / Q000188:drug therapy*; D000077270:Exenatide; D052216:Glucagon-Like Peptide 1 / Q000627:therapeutic use*; D000067757:Glucagon-Like Peptide-1 Receptor; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D010455:Peptides / Q000627:therapeutic use*; D018027:Receptors, Glucagon / Q000819:agonists*; D014688:Venoms / Q000627:therapeutic use*
chemical_list: C000593833:GLP1R protein, human; D000067757:Glucagon-Like Peptide-1 Receptor; D007004:Hypoglycemic Agents; D010455:Peptides; D018027:Receptors, Glucagon; D014688:Venoms; D052216:Glucagon-Like Peptide 1; D000077270:Exenatide