title: Relationship between the apolipoprotein E and angiotensin-converting enzyme genotypes and LDL particle size in Japanese subjects.
abstract: We investigated whether the apolipoprotein E (apoE) and the angiotensin-converting enzyme (ACE) genotypes contribute to the variance in low-density lipoprotein (LDL) particle size in Japanese subjects (n = 136; M/F= 106/30). ACE polymorphism was associated with neither LDL size nor individual lipid levels. In contrast, the subjects with the epsilon2 allele of the apoE genotype had significantly lower levels of total cholesterol (P = 0.002) and LDL cholesterol (P = 0.004) compared with those without the epsilon2 allele. The subjects with the epsilon4 allele had a significantly smaller LDL particle size than those without the epsilon4 allele (P = 0.012). Separate analyses of the male subjects showed similar associations. A stepwise regression analysis revealed the epsilon4 allele to be an independent contributing variable that could affect LDL particle size. Our results suggest that the apoE genotype is associated with the development of atherosclerotic disease, since the epsilon2 and epsilon4 alleles relate to a decrease in LDL cholesterol levels and a decrease in LDL particle size, respectively.
authors.affiliation: Second Department of Internal Medicine, Nagoya University School of Medicine, Japan. kenji@med.nagoya-u.ac.jp
authors.forename: K
authors.initials: K
authors.lastname: Okumura
authors.forename: H
authors.initials: H
authors.lastname: Matsui
authors.forename: K
authors.initials: K
authors.lastname: Kawakami
authors.forename: Y
authors.initials: Y
authors.lastname: Numaguchi
authors.forename: S
authors.initials: S
authors.lastname: Kaneko
authors.forename: I
authors.initials: I
authors.lastname: Morishima
authors.forename: S
authors.initials: S
authors.lastname: Mokuno
authors.forename: Y
authors.initials: Y
authors.lastname: Toki
authors.forename: T
authors.initials: T
authors.lastname: Hayakawa
mesh_terms: D000328:Adult; D000368:Aged; D001057:Apolipoproteins E / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D007564:Japan; D008077:Lipoproteins, LDL / Q000737:chemistry*; D008297:Male; D008875:Middle Aged; D010316:Particle Size; D007703:Peptidyl-Dipeptidase A / Q000235:genetics*; D011110:Polymorphism, Genetic
chemical_list: D001057:Apolipoproteins E; D008077:Lipoproteins, LDL; D007703:Peptidyl-Dipeptidase A