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

Ananda Basu, Michael D. Jensen, Frances McCann, Debabrata Mukhopadhyay, Michael J. Joyner, Robert A. Rizza

Research output: Contribution to journalArticle

103 Scopus citations

Abstract

OBJECTIVE - 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. RESEARCH DESIGN AND METHODS - 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. RESULTS - 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 cm2) and visceral fat area (-16.1 ± 8 cm2) tended to decrease with pioglitazone but increased (P < 0.02 for differences between groups) with glipizide (+38.4 ± 17 cm2 abdominal; +19.1 ± 9 cm2 visceral). Pioglitazone tended to reduce (P = 0.05) diastolic (-8.4 ± 4 mmHg) and mean (-9.5 ± 5 mmHg; P = 0.08) blood pressure and reduced (P < 0.001) systemic vascular resistance (2,785 ± 336 vs. 2,227 ± 136 dynes/s per m2), while there were no differences in these parameters with glipizide. Neither therapy altered circulating catecholamine concentrations. CONCLUSIONS - When pioglitazone and glipizide are given in doses sufficient to achieve equivalent glycemic control in people with type 2 diabetes, pioglitazone increases total body water, thereby accounting for the majority of weight gain, tended to decrease visceral and abdominal fat content and blood pressure, and reduces systemic vascular resistance.

Original languageEnglish (US)
Pages (from-to)510-514
Number of pages5
JournalDiabetes care
Volume29
Issue number3
DOIs
StatePublished - Jan 1 2006

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Advanced and Specialized Nursing

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