Diabetes Care
29:1071-1076,
2006
DOI: 10.2337/dc05-2174
© 2006 by the American Diabetes Association
Cardiovascular and Metabolic Risk Original Article |
Effect of Rosiglitazone on Endothelial Function and Inflammatory Markers in Patients With the Metabolic Syndrome
Katherine Esposito, MD, PHD1,2,
Miryam Ciotola, MD1,
Diego Carleo, MD1,
Bruno Schisano, BT1,
Franco Saccomanno, MD1,
Ferdinando Carlo Sasso, MD3,
Domenico Cozzolino, MD3,
Roberta Assaloni, MD4,
Domenico Merante, MD5,
Antonio Ceriello, MD4 and
Dario Giugliano, MD, PHD1,2
1 Division of Metabolic Diseases, University of Naples SUN, Naples, Italy
2 Centro di Eccellenza Cardiovascolare, University of Naples SUN, Naples, Italy
3 Department of Geriatrics and Metabolic Diseases, University of Naples SUN, Naples, Italy
4 Department of Internal Medicine, University of Udine, Udine, Italy
5 Medical Department, GlaxoSmithKline, Verona, Italy
Address correspondence and reprint requests to Dario Giugliano, MD, PhD, Chair and Division of Metabolic Diseases, Policlinico Seconda Università di Napoli, Piazza L. Miraglia, 80031 Naples, Italy. E-mail: dario.giugliano{at}unina2.it
OBJECTIVEThe aim of this study was to assess the effect of rosiglitazone on endothelial function and inflammatory markers in patients with the metabolic syndrome.
RESEARCH DESIGN AND METHODSThis was a randomized, double-blind, controlled clinical trial. One hundred subjects (54 men and 46 women) with the metabolic syndrome, as defined by the Adult Treatment Panel III, were followed for 12 months after random assignment to rosiglitazone (4 mg/day) or placebo. Primary end points were flow-mediated dilation and high-sensitivity C-reactive protein (hs-CRP) levels; secondary end points were lipid and glucose parameters, homeostasis model assessment (HOMA) of insulin sensitivity, endothelial function score, and circulating levels of interleukin (IL)-6, IL-18, and adiponectin.
RESULTSCompared with 60 control subjects matched for age and sex, patients with the metabolic syndrome had decreased endothelial function, raised concentrations of inflammatory markers, and reduced insulin sensitivity. After 12 months, subjects with the metabolic syndrome receiving rosiglitazone showed improved flow-mediated vasodilation (4.2%, P < 0.001) and reduced hs-CRP levels (0.7 mg/dl, P = 0.04), compared with the placebo group. Moreover, HOMA (0.8, P = 0.01) and serum concentrations of IL-6 (0.5 pg/ml, P = 0.045) and IL-18 (31 pg/ml, P = 0.036) were significantly reduced in subjects receiving rosiglitazone, whereas adiponectin levels showed a significant increment (2.3 µg/ml, P = 0.02). High-density lipoprotein-cholesterol levels increased more and triglyceride levels decreased more in the rosiglitazone group compared with the placebo group. At 1 year of follow-up, 30 subjects receiving rosiglitazone still had features of the metabolic syndrome, compared with 45 subjects receiving placebo (P < 0.001).
CONCLUSIONSRosiglitazone might be effective in reducing the prevalence of the metabolic syndrome.
Abbreviations: CRP, C-reactive protein FMD, flow-mediated vasodilation HOMA, homeostasis model assessment hs-CRP, high-sensitivity CRP IL, interleukin

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Copyright © 2006 by the American Diabetes Association.
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