DOI: 10.2337/diacare.29.02.06.dc05-1474 © 2006 by the American Diabetes Association
Association of Systemic Concentrations of Macrophage Migration Inhibitory Factor With Impaired Glucose Tolerance and Type 2 DiabetesResults from the Cooperative Health Research in the Region of Augsburg, Survey 4 (KORA S4)
1 German Diabetes Clinic, German Diabetes Center, Leibniz Center at Heinrich Heine University, Düsseldorf, Germany Address correspondence and reprint requests to Dr. Christian Herder, German Diabetes Clinic, German Diabetes Center, Leibniz Center at Heinrich Heine University, Aufm Hennekamp 65, 40225 Düsseldorf, Germany. E-mail: christian.herder{at}ddz.uni-duesseldorf.de OBJECTIVEMacrophage migration inhibitory factor (MIF) is a central cytokine in innate immunity. MIF expression can be regulated by glucose and insulin, but data on the association with type 2 diabetes are sparse. The aim of this study was to test whether MIF is associated with impaired glucose tolerance (IGT) and type 2 diabetes and whether these associations are independent of metabolic and immunological risk factors and to compare the associations of MIF and IGT/type 2 diabetes with those of C-reactive protein (CRP) and interleukin-6 (IL-6) with IGT/type 2 diabetes. RESEARCH DESIGN AND METHODSThe Cooperative Health Research in the Region of Augsburg/Kooperative Gesundheitsforschung im Raum Augsburg, Survey 4 (KORA S4) is a population-based survey performed in Southern Germany (19992001). Of 1,653 participants aged 5574 years, 236 patients with type 2 diabetes, 242 subjects with IGT, and 244 normoglycemic control subjects matched for age and sex were included in this cross-sectional study. Serum concentrations of MIF were measured by enzyme-linked immunosorbent assay. RESULTSSerum MIF concentrations are highly increased in individuals with IGT and type 2 diabetes. The associations of MIF with IGT and type 2 diabetes were independent of classical risk factors and of CRP and IL-6 and were much stronger before and after multivariate adjustment than the associations of CRP and IL-6 with IGT and type 2 diabetes. CONCLUSIONSOur data suggest that elevations of systemic MIF concentrations precede the onset of type 2 diabetes. This finding may be relevant because MIF has been reported to contribute to the development of type 2 diabetesrelated diseases such as atherosclerosis and cancer.
Abbreviations: CRP, C-reactive protein IGT, impaired glucose tolerance IL-6, interleukin-6 KORA, Cooperative Health Research in the Region of Augsburg MIF, macrophage migration inhibitory factor OGTT, oral glucose tolerance test
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