Journal
HORMONE RESEARCH
Volume 58, Issue 3, Pages 143-149Publisher
KARGER
DOI: 10.1159/000064490
Keywords
peroxisome proliferator-activated receptor-gamma; leptin; diabetes mellitus type-2
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Objective: To analyze the relationship between the peroxisome proliferator-activated receptor-gamma (PPARgamma2) Pro12Ala variant and type-2 diabetes mellitus and its correlation with some cytokine determinants of insulin resistance such as tumor necrosis factor (TNF)-alpha and leptin. Methods: The PPARgamma2 Pro12Ala genetic polymorphism was studied in 167 type-2 diabetic patients and 63 healthy controls. Serum leptin and plasma-soluble TNF-R2 were measured. Results: Women carriers of the Pro12Ala mutation exhibited higher leptin levels than women non-carriers (median 31.4 vs. 17.5 ng/ml; p < 0.005). sTNF-R2 levels did not show differences between the two genotypes. Analysis by the multiple linear regression model of leptin-body mass index controlled by the PPARgamma2 genotype showed that leptin levels were determined by the Pro12Ala mutation in type-2 diabetic women but not in men. Conclusions: PPARgamma2 seems to be implicated in leptin homeostasis in type-2 diabetic women. Copyright (C) 2002 S Karger AG, Basel.
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