Exp Clin Endocrinol Diabetes 2008; 116: S64-S69
DOI: 10.1055/s-2008-1081490
Article

© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York

Association of Impaired Glucose Metabolism in Morbid Obesity with Hypoadiponectinaemia

S. Schinner 1 [*] , K. Kempf 2 [*] , H. Overmann 1 , H. S. Willenberg 1 , M. Schott 1 , B. Rose 2 , W. A. Scherbaum 1 , C. Herder 2
  • 1Department of Endocrinology, Diabetes and Rheumatology, University Hospital Düsseldorf, Germany
  • 2Institute for Clinical Diabetes Research, German Diabetes Centre, Leibniz Institute for Diabetes Research at Heinrich Heine University Düsseldorf, Germany
Further Information

Publication History

received 03.03.2008

accepted 07.04.2008

Publication Date:
05 September 2008 (online)

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Abstract

Background: Increased circulating levels of cytokines and chemokines and decreased adiponectin levels are associated with impaired glucose tolerance (IGT) and type 2 diabetes mellitus (T2DM). As obesity is the major risk factor for T2DM it is not clear why many patients with morbid obesity remain normoglycaemic and if this protection can be attributed to a lower grade of inflammation or higher adiponectin levels.

Materials and methods: Glucose tolerance of morbidly obese patients (n=2 754, body mass index ≥40 kg/m2) was assessed by oral glucose tolerance tests. In a case-control design we compared levels of eight immune mediators and adiponectin from patients with IGT/T2DM (n=52) and normal glucose tolerance (NGT; n=59). Gene expression in peripheral blood was determined by quantitative RT-PCR, and serum concentrations of immune mediators and adiponectin were measured by ELISA and bead-based multiplex technology.

Results: About 54% of the patients in our morbidly obese cohort were normoglycaemic, while 14% were diagnosed with IGT and 32% with T2DM. There was no statistically significant difference in mRNA expression or serum levels of proinflammatory markers. Interestingly, we could demonstrate an association of NGT with higher adiponectin levels (p=0.039). Adiponectin levels were negatively correlated with interleukin (IL)-6 and macrophage chemoattractant protein (MCP)-1, but independent the other immune mediators.

Conclusions: We found an association of lower adiponectin levels with IGT/T2DM, but no further increase in inflammatory markers in morbid obesity. This suggests that in addition to chronic, low-grade inflammation, adiponectin is an important factor in the development of, or protection against, T2DM in obesity.

References

1 These authors contributed equally to the work.

Correspondence

Dr. S. Schinner

Department of Endocrinology

Diabetes and Rheumatology

University Hospital Düsseldorf

Moorenstraße 5

40225 Düsseldorf

Germany

Phone: +49/211/811 78 10

Fax: +49/211/811 78 60

Email: sven.schinner@uni-duesseldorf.de