Relationship between adiponectin and the first phase of glucose-stimulated insulin secretion from pancreatic β-cell in patients with type 2 diabetes mellitus
10.3760/cma.j.issn.1000-6699.2010.07.009
- VernacularTitle:2型糖尿病患者脂联素与胰岛β细胞第一时相分泌功能的关系探讨
- Author:
Dengyou QIN
;
Huacong DENG
;
Yanqin AI
;
Ming GONG
;
Qiang LIU
;
Yongling LI
;
Gongpu MI
- Publication Type:Journal Article
- Keywords:
Adiponectin;
Intravenous glucose tolerance test;
First-phase of insulin secretion;
Proinsulin
- From:
Chinese Journal of Endocrinology and Metabolism
2010;26(7):564-567
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the relationship between adiponectin and the first-phase of pancreatic P-cell insulin secretion in subjects with different statuses of glucose tolerance. Methods Thirty-seven patients with newly diagnosed type 2 diabetes mellitus (DM) , 30 patients with abnormal glucose tolerance (IGR) , and 40 normal control subjects (NGT) underwent intravenous glucose tolerance test (IVGTT). Fasting adiponectin and proinsulin (PI) was assayed by EL1SA. Fasting free fatty acid ( FFA) was measured by colorimetry. Insulin area under the curve ( AUC ) , incremental AUC (iAUC) from 0 min to 10 min, AIR3-5, homeostasis model assessment for insnlin resistance (HOMA-IR) , and for β cell function ( HOMA-p) were calculated. The relationship between adiponectin and AUC, iAUC, AIR3-5, proinsulin, FFA, and HOMA-IR was explored. Results (1) The levels of AUC, iAUC, AIR3-5, and adiponectin in DM group and IGR group were significantly lower than those in NGT group (P<0.05), reduced in DM group than those in IGR group(P<0.05). (2) The levels of PI in DM group and IGR group were significantly higher than that in NGT (P<0.05). (3) Adiponectin was positively correlated with HOMA-p,AUC,iAUC,AIR3-5, and HDL-C,while negatively correlated with proinsulin, HOMA-IR, and LDL-C. (4) Proinsulin was positively correlated with HOMA-IR. (5 ) Multiple regression stepwise analysis showed that adiponectin was independently associated with AUC. Conclusions Adiponectin was an independent factor affecting the first phase of pancreatic p-cell insulin secretion. Low adiponectin level could predict the dysfunction of the first phase pancreatic p-cell secretion as well as insulin resistance in patients with type 2 diabetes.
