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Journal of Lipid Research, Vol. 42, 1905-1912, November 2001
Copyright © 2001 by Lipid Research, Inc.

Lipoprotein lipase and apoE polymorphisms: relationship to hypertriglyceridemia during pregnancy

Correspondence to: Jiri J. Frohlich, To whom correspondence should be addressed., jifr{at}unixg.ubc.ca (E-mail)

Pregnancy is associated with increases in plasma total cholesterol (TC) and triglycerides (TG). Individuals with decreased LPL activity have a mild form of hypertriglyceridemia. Variations in the apolipoprotein E (apoE) gene have been associated with increases in plasma TG in addition to differences in plasma TC, LDL cholesterol (LDL-C), and HDL cholesterol (HDL-C). Because of the overproduction of TG-rich VLDL, normal pregnancy challenges the lipolytic capacity of LPL and the clearance of remnants particles. During pregnancy, LPL and apoE polymorphisms may contribute to hypertriglyceridimia. This study investigated the impact of three LPL polymorphisms and the apoE genotypes on lipid levels during pregnancy. Fasting plasma lipids were measured and analyses of the LPL and apoE polymorphisms were performed in 250 women in the third trimester of pregnancy. S447X carriers had lower TG (P = 0.003), and N291S carriers had lower HDL-C (P < 0.02) and higher fractional esterification rate of HDL (FER_HDL) (P = 0.007), a measure of HDL particle size, than the noncarriers. The E2 allele was associated with lower TC, LDL-C, and FER_HDL (P < 0.05) compared to the E3/E3 genotype.

These findings support that LPL and apoE polymorphisms play an important role in lipid metabolism in pregnancy. The relationship of these polymorphisms to risk of coronary heart disease in women requires further study. — McGladdery, S. H., and J. J. Frohlich. Lipoprotein lipase and apoE polymorphisms: relationship to hypertriglyceridemia during pregnancy. J. Lipid Res. 2001. 42: 1905–1912.

Supplementary key words: FER_HDL, women, CHD, genetics, lipids

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