ORIGINAL ARTICLE: Pioglitazone improvement of fasting and postprandial hyperglycaemia in Mexican-American patients with Type 2 diabetes: a double tracer OGTT study

Autor: Kenneth Cusi, Ralph A. DeFronzo, Amalia Gastaldelli, Leonard C. Glass, Eugenio Cersosimo, R. Petz, Rachele Berria
Rok vydání: 2010
Předmět:
Zdroj: Clinical Endocrinology. 73:339-345
ISSN: 0300-0664
DOI: 10.1111/j.1365-2265.2010.03811.x
Popis: Summary Objectives By using tracer techniques, we explored the metabolic mechanisms by which pioglitazone treatment for 16 weeks improves oral glucose tolerance in patients with type 2 diabetes when compared to subjects without diabetes. Methods In all subjects, before and after treatment, we measured rates of tissue glucose clearance (MCR), oral glucose appearance (RaO) and endogenous glucose production (EGP) during a (4-h) double tracer oral glucose tolerance test (OGTT) (1-14C-glucose orally and 3-3H-glucose intravenously). Basal hepatic insulin resistance index (HepIR) was calculated as EGPxFPI. β-cell function was assessed as the incremental ratio of insulin to glucose (ΔI/ΔG) during the OGTT. Results Pioglitazone decreased fasting plasma glucose concentration (10·5 ± 0·7 to 7·8 ± 0·6 mm, P
Databáze: OpenAIRE