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Metabolism. 2004 Feb;53(2):138-9.

Insulin resistance is associated with increased serum levels of glycosylphosphatidylinositol-specific phospholipase D.

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  • 1Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.


The dyslipidemia of the metabolic syndrome is associated with alterations in triglyceride and high-density lipoprotein (HDL) metabolism. We examined the serum levels of glycosylphosphatidylinositol-specific phospholipase D (GPI-PLD), a minor HDL-associated protein, in a cohort with a wide range of insulin sensitivity. The mean serum GPI-PLD mass from 109 subjects was 58.9 +/- 18.4 microg/mL (mean +/- SD). GPI-PLD levels directly correlated with cholesterol, apolipoprotein AI, triglycerides, insulin, and homeostasis model assessment (HOMA) but not C-reactive protein. These results suggest that increased serum GPI-PLD is associated with the insulin resistance.

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