Effects of pioglitazone versus glipizide on body fat distribution, body water content, and hemodynamics in type 2 diabetes

Diabetes Care
Ananda BasuRobert A Rizza

Abstract

Pioglitazone, a peroxisome proliferator-activated receptor agonist and glipizide, an insulin secretagogue, are commonly used to treat type 2 diabetes. Our study was designed to examine the effects of pioglitazone versus glipizide on body water, body composition, and hemodynamic parameters in the presence of comparable glycemic control between groups. We studied 19 diabetic subjects randomly assigned to either 45 mg pioglitazone (n = 8) or 10 mg (median dose) glipizide (n = 11) for 12 weeks. Body water content was measured with deuterated water, body composition by dual-energy X-ray absorptiometry and computed tomography, and cardiac output and systemic vascular resistance by acetylene rebreathing technique both before and after therapy. Pioglitazone increased (P < 0.001 from baseline) total body water (+2.4 +/- 0.5 l) accounting for 75% of the total weight gain (+3.1 +/- 2.0 kg) but did not alter vascular endothelial growth factor concentrations. Total abdominal (-32.2 +/- 19 cm(2)) and visceral fat area (-16.1 +/- 8 cm(2)) tended to decrease with pioglitazone but increased (P < 0.02 for differences between groups) with glipizide (+38.4 +/- 17 cm(2) abdominal; +19.1 +/- 9 cm(2) visceral). Pioglitazone tended to reduce (P = 0.05...Continue Reading

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