Erschienen in:
01.12.2007 | Original Paper
Interleukin-18 enhances glucose uptake in 3T3-L1 adipocytes
verfasst von:
Yi-Sheng Yang, Xiao-Ying Li, Jie Hong, Wei-Qiong Gu, Yi-Fei Zhang, Jun Yang, Huai-Dong Song, Jia-Lun Chen, Guang Ning
Erschienen in:
Endocrine
|
Ausgabe 3/2007
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Abstract
In order to characterize the potential causative effects of interleukin-18 (IL-18) on insulin resistance, we measured glucose uptake in 3T3-L1 adipocytes treated with mouse recombinant IL-18. IL-18 surprisingly enhanced, rather than reduced insulin-mediated glucose uptake in adipocytes. Moreover IL-18 could counteract the glucose uptake suppression caused by tumor necrosis factor α in 3T3-L1 adipocytes. The mechanism dissection showed that the IL-18 upregulated phosphorylated Akt and downregulated phosphorylated P38 MAPK. These findings indicated that the elevated serum IL-18 levels in obesity and diabetes might be a compensatory response to insulin resistance.