Overnight normalization of glucose concentrations improves hepatic but not extrahepatic insulin action in subjects with type 2 diabetes mellitus

The Journal of Clinical Endocrinology and Metabolism
S D WiseR A Rizza

Abstract

Subjects with poorly controlled type 2 diabetes are both hyperglycemic and insulin resistant. To determine whether short term restoration of normoglycemia improves insulin action, hyperinsulinemic (approximately 300 pmol/L) euglycemic clamps were performed in diabetic subjects after either overnight infusion of saline or overnight infusion of insulin in amounts sufficient to maintain euglycemia throughout the night. Fasting glucose concentrations (5.2 +/- 0.2 vs. 11.9 +/- 1.4 mmol/L; P < 0.01) and rates of endogenous glucose production (13.0 +/- 1.1 vs. 18.6 +/- 1.6 mumol/kg.min; P < 0.05) were both lower after overnight insulin than overnight saline. Insulin-induced stimulation of glucose uptake (to 34.9 +/- 6.8 vs. 28.8 +/- 3.4 mumol/kg.min; P = 0.2) and inhibition of free fatty acids (to 0.13 +/- 0.03 vs. 0.12 +/- 0.04 mmol/L; P = 0.6) did not differ after overnight saline and overnight insulin. In contrast, endogenous glucose production during the final hour of the hyperinsulinemic clamps (i.e. when glucose concentrations were the same) remained higher (P = 0.05) after overnight saline than after overnight insulin (5.5 +/- 1.5 vs. 0.02 +/- 1.4 mumol/kg.min). Thus, acute restoration of euglycemia by means of an overnight ins...Continue Reading

Citations

Sep 27, 2003·Diabetic Medicine : a Journal of the British Diabetic Association·P StaehrH Beck-Nielsen
Jun 19, 2001·International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity·J G KralF Schaffner

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biomarkers for Type 2 Diabetes

Biomarkers can help understand chronic diseases and assist in risk prediction for prevention and early detection of diseases. Here is the latest research on biomarkers in type 2 diabetes, a disease in which the body is unable to produce or properly use insulin.