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Journal of Lipid Research, Vol. 41, 1623-1628, October 2000
Copyright © 2000 by Lipid Research, Inc.

Original Article

Apolipoprotein A4-1/2 polymorphism and response of serum lipids to dietary cholesterol in humans

Correspondence to: Martijn B. Katan

The response of serum lipids to dietary changes is to some extent an innate characteristic. One candidate genetic factor that may affect the response of serum lipids to a change in cholesterol intake is variation in the apolipoprotein A4 gene, known as the APOA4-1/2 or apoA-IVGln360His polymorphism. However, previous studies showed inconsistent results. We therefore fed 10 men and 23 women with the APOA4-1/1 genotype and 4 men and 13 women with the APOA4-1/2 or -2/2 genotype (carriers of the APOA4-2 allele) two diets high in saturated fat, one containing cholesterol at 12.4 mg/MJ, 136.4 mg/day, and one containing cholesterol at 86.2 mg/MJ, 948.2 mg/day. Each diet was supplied for 29 days in crossover design. The mean response of serum low density lipoprotein cholesterol was 0.44 mmol/l (17 mg/dl) in both subjects with the APOA4-1/1 genotype and in subjects with the APOA4-2 allele [95% confidence interval of difference in response, -0.20 to 0.19 mmol/l (-8 to 7 mg/dl)]. The mean response of high density lipoprotein cholesterol was also similar, 0.10 mmol/l (4 mg/dl), in the two APOA-4 genotype groups [95% confidence interval of difference in response, -0.07 to 0.08 mmol/l (-3 to 3 mg/dl)]. Thus, the APOA4-1/2 polymorphism did not affect the response of serum lipids to a change in the intake of cholesterol in this group of healthy Dutch subjects who consumed a background diet high in saturated fat.

Knowledge of the APOA4-1/2 polymorphism is probably not a generally applicable tool for the identification of subjects who respond to a change in cholesterol intake. — Weggemans, R. M., P. L. Zock, S. Meyboom, H. Funke, and M. B. Katan. Apolipoprotein A4-1/2 polymorphism and response of serum lipids to dietary cholesterol in humans. J. Lipid Res. 2000. 41: 1623;–1628.

Supplementary key words: apoA-IV, APOA4, lipid response, diet, genetic polymorphism, cholesterol

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