Journal
METABOLISM-CLINICAL AND EXPERIMENTAL
Volume 53, Issue 2, Pages 182-186Publisher
W B SAUNDERS CO
DOI: 10.1016/j.metabol.2003.08.009
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ATP-binding cassette transporter A1 (ABCA1) plays an important role in apolipoprotein Al (apoAl)-mediated cholesterol efflux from peripheral cells. The mild changes in ABCA1 activity due to genomic variation might be associated with interindividual variations in serum high-density lipoprotein cholesterol (HDL-C) and apoAl levels, or primary hypoalphalipoproteinemia in the general population. In the present study, we analyzed the relationships between 5 single nucleotide polymorphisms (SNPs) and 2 insertion/deletion polymorphisms in the 5' flanking region and 5 missense polymorphisms of the ABCA1 gene and serum lipid levels in healthy school-aged children. We detected significant associations between the K219R and V771M polymorphisms, and HDL-C or apoAl levels. The present data support the proposition that the K219 allele is an antiatherogenic allele with increased cholesterol efflux activity. Similarly, the M771 allele appears to be anti-atherogenic, although the frequency of the M771 allele is low. (C) 2004 Elsevier Inc. All rights reserved.
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