Cardiovascular Diabetology (May 2003)

Plasma interleukin 8 concentrations in obese subjects with impaired glucose tolerance.

  • Szelachowska Malgorzata,
  • Dzienis-Straczkowska Stella,
  • Nikolajuk Agnieszka,
  • Kowalska Irina,
  • Straczkowski Marek,
  • Kinalska Ida

DOI
https://doi.org/10.1186/1475-2840-2-5
Journal volume & issue
Vol. 2, no. 1
p. 5

Abstract

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Abstract Background Interleukin 8 (IL-8) is a cytokine with atherogenic properties. In vitro studies revealed that it is produced and secreted by human adipocytes. We recently reported that plasma IL-8 is increased in obese subjects with normal glucose tolerance (NGT). The aim of the present study was to measure plasma IL-8 concentrations in subjects with impaired glucose tolerance (IGT). Methods A total of 44 subjects with marked overweight or obesity (BMI > 27.8 kg/m2), 27 with NGT and 17 with IGT, were recruited for the present study. Plasma IL-8 levels were measured in fasting state, after an oral glucose tolerance test (OGTT) and after euglycemic hyperinsulinemic clamp. Results The studied groups did not differ in fasting IL-8 concentrations. Both OGTT and clamp resulted in a significant increase in plasma IL-8. The change in IL-8 after clamp was similar in both groups. In contrast, after OGTT plasma IL-8 levels (IL-8OGTT) were markedly higher in IGT individuals. In IGT, but not NGT group, IL-8OGTT was positively related to postload glucose and negatively to insulin sensitivity. Conclusion Plasma IL-8 concentrations after glucose load are increased in obese IGT subjects in comparison to normoglycemic weight-matched individuals. Increase in plasma IL-8 might be both insulin-mediated (during clamp) and glucose-mediated (during OGTT).

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