Abstract
Objective. Glucose-dependent insulinotropic polypeptide (GIP) as well as glucagon-like peptide-1 (GLP-1) is intestinal incretin hormone that stimulates insulin secretion in response to feeding. Much evidence of GIP contribution to obesity development has been found recently.Aim. The aim of the study was to evaluate glucose-stimulated GIP and GLP-1 secretion in people with type 2 diabetes (T2D) risk factors and different body mass index (BMI).Materials and methods. Total GIP and GLP-1 secretion was estimated in 127 patients with T2D risk factors during OGTT (75 g glucose) on 0, 30 and 120 minutes.Results. Patients with BMI≥ 35 kg/m2 had significantly higher fasting and stimulated GIP levels than participants with less BMI. GIP secretion was also higher in patients was insulinresistance, estimated by HOMA-IR, comparing to non-insulinresistant patients. Difference in GLP-1 secretion in patients within several BMI groups was nonsignificant.Conclusion. Our results suggest GIP is related to obesity degree, that means it can play a role in lipid metabolism and obesity development.
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