title: Influence of the apolipoprotein E polymorphism on plasma lipoproteins in a Mexican population.
abstract: The influence of apolipoprotein E (APOE) genotypes on plasma lipid levels was determined in 278 Mexican individuals. The most frequent genotype was E3/3 (80.5%) followed by E3/4 (12.5%), E2/3 (5.0%), E2/4 (1.4%), and E4/4 (0.3%). Our data are similar to those previously described for Mexican-American and American Indian populations, which show the highest frequency worldwide of the APOE*3 and the E3/3 genotype. Compared to female carriers of the E3/3 genotype, women with the E3/4 genotype presented increased low-density lipoprotein cholesterol (117 +/- 28.0 mg/dL vs. 134.0 +/- 31.7 mg/dL, p < 0.05), and total cholesterol (179.4 +/- 33.4 mg/dL vs. 197.5 +/- 35.4 mg/dL, p < 0.01). Also, we detected increased high-density lipoprotein concentrations in women with the E2/3 genotype (53.7 +/- 19.5 mg/dL) when compared to women with the E3/3 genotype (45.2 +/- 12.0 mg/dL) (p < 0.032). Our data suggest that genetic variation at the APOE locus in the Mexican population is a genetic factor that influences plasma lipid levels. This effect was observed only in the female population. Additional studies attempting to correlate APOE polymorphism with plasma lipid profile in a large number of individuals would be helpful in establishing the true significance of this polymorphism in the Mexican population.
authors.affiliation: Physiology Department, Instituto Nacional de Cardiología Ignacio Chávez, México, DF, México.
authors.forename: R
authors.initials: R
authors.lastname: Gamboa
authors.forename: G
authors.initials: G
authors.lastname: Vargas-Alarcón
authors.forename: A
authors.initials: A
authors.lastname: Medina-Urrutia
authors.forename: G
authors.initials: G
authors.lastname: Cardoso-Saldaña
authors.forename: G
authors.initials: G
authors.lastname: Hernández-Pacheco
authors.forename: J
authors.initials: J
authors.lastname: Zamora-González
authors.forename: C
authors.initials: C
authors.lastname: Posadas-Romero
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001057:Apolipoproteins E / Q000097:blood / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D008055:Lipids / Q000097:blood*; D008297:Male; D008800:Mexico; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D044465:White People / Q000235:genetics
chemical_list: D001057:Apolipoproteins E; D008055:Lipids