title: Influence of the -514C/T polymorphism in the promoter of the hepatic lipase gene on postprandial lipoprotein metabolism.
abstract: The -514C/T polymorphism located in the promoter region of the hepatic lipase gene mediates changes in the plasma levels of the enzyme. The aim of this study was to determine whether the presence of this polymorphism modifies the postprandial clearance of lipoproteins of intestinal origin. 51 normolipemic volunteers, homozygotes for the allele E3 of the apo E were selected (26 homozygotes for the C allele and 25 carriers of the T allele in both homozygote and heterozygote form). The subjects underwent a Vitamin A fat-loading test. Blood was drawn every hour until the 6th hour and every 2 h and 30 min until the 11th hour to determine cholesterol and plasma triglycerides as well as cholesterol, triglycerides (TG) and retinyl palmitate in triacylglycerol-rich lipoproteins (chylomicrons and chylomicron remnants). Carriers of the T allele showed significantly lower postprandial levels of apolipoprotein B (P < 0.01), total TG in plasma (P < 0.05), small TRL-TG (P < 0.04), large TRL-TG (P < 0.04) and small TRL-cholesterol (P < 0.04) when compared to subjects homozygous for the C allele. Our data suggest that the T allele of the -514C/T polymorphism in the promoter region of the hepatic lipase gene is associated with a lower postprandial lipemic response.
authors.affiliation: Lipids and Atherosclerosis Research Unit, Reina Sofía University Hospital, Avda Menéndez Pidal, s/n. 14004 Córdoba, Spain.
authors.forename: Purificación
authors.initials: P
authors.lastname: Gómez
authors.forename: José López
authors.initials: JL
authors.lastname: Miranda
authors.forename: Carmen
authors.initials: C
authors.lastname: Marín
authors.forename: Cecilia
authors.initials: C
authors.lastname: Bellido
authors.forename: Juan A
authors.initials: JA
authors.lastname: Moreno
authors.forename: Rafael
authors.initials: R
authors.lastname: Moreno
authors.forename: Pablo
authors.initials: P
authors.lastname: Pérez-Martínez
authors.forename: Francisco
authors.initials: F
authors.lastname: Pérez-Jiménez
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D053299:Apolipoprotein B-100; D001055:Apolipoproteins B / Q000032:analysis / Q000235:genetics; D019540:Area Under Curve; D001483:Base Sequence; D006801:Humans; D008049:Lipase / Q000235:genetics* / Q000378:metabolism; D008074:Lipoproteins / Q000378:metabolism; D008099:Liver / Q000201:enzymology; D008297:Male; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D019518:Postprandial Period; D011401:Promoter Regions, Genetic / Q000235:genetics*; D012016:Reference Values; D012044:Regression Analysis; D012494:Sampling Studies
chemical_list: D053299:Apolipoprotein B-100; D001055:Apolipoproteins B; D008074:Lipoproteins; D008049:Lipase