OBJECTIVES: We determined the frequencies of apolipoprotein E (apo E) alleles and examined the effect of apo E polymorphism on lipoprotein particle sizes in Serbian healthy, middle-aged individuals. DESIGN AND METHODS: We performed apo E phenotype by immunobloting method in 183 men and 143 women (mean years: 56.3+/-10.60 and 54.9+/-10.31, respectively). Plasma lipid and apolipoprotein levels were measured by routine laboratory methods. LDL and HDL particle sizes were determined by nondenaturing polyacrylamide gradient (3-31%) gel electrophoresis. RESULTS: The apo E allele frequencies were epsilon2--4.9%, epsilon3--86.5%, and epsilon4--8.6%. Men with epsilon4 allele had lower HDL-C and Apo AI concentrations than epsilon3 men. The epsilon2 allele men had the smallest LDL particles, highest percent of subjects with LDL phenotype B and highest TG/HDL-C ratio. Women with epsilon2 allele had lowest concentration of apo B. The epsilon4 allele women had smallest HDL particles and highest percent of the subjects with small-sized HDL phenotype. CONCLUSIONS: This study showed gender-related effect of apo E polymorphism on lipoprotein particle size. In men, possession of the epsilon2 allele is associated with small LDL particles, whereas in women, epsilon4 allele is associated with small HDL particles. Differences in gender-related influence of apo E polymorphism on LDL and HDL particle sizes could be clinically useful in strategy for reduction of coronary disease risk in middle-aged men and women.
OBJECTIVES: We determined the frequencies of apolipoprotein E (apo E) alleles and examined the effect of apo E polymorphism on lipoprotein particle sizes in Serbian healthy, middle-aged individuals. DESIGN AND METHODS: We performed apo E phenotype by immunobloting method in 183 men and 143 women (mean years: 56.3+/-10.60 and 54.9+/-10.31, respectively). Plasma lipid and apolipoprotein levels were measured by routine laboratory methods. LDL and HDL particle sizes were determined by nondenaturing polyacrylamide gradient (3-31%) gel electrophoresis. RESULTS: The apo E allele frequencies were epsilon2--4.9%, epsilon3--86.5%, and epsilon4--8.6%. Men with epsilon4 allele had lower HDL-C and Apo AI concentrations than epsilon3 men. The epsilon2 allele men had the smallest LDL particles, highest percent of subjects with LDL phenotype B and highest TG/HDL-C ratio. Women with epsilon2 allele had lowest concentration of apo B. The epsilon4 allele women had smallest HDL particles and highest percent of the subjects with small-sized HDL phenotype. CONCLUSIONS: This study showed gender-related effect of apo E polymorphism on lipoprotein particle size. In men, possession of the epsilon2 allele is associated with small LDL particles, whereas in women, epsilon4 allele is associated with small HDL particles. Differences in gender-related influence of apo E polymorphism on LDL and HDL particle sizes could be clinically useful in strategy for reduction of coronary disease risk in middle-aged men and women.
Authors: Intira Sriprasert; Wendy Jean Mack; Howard Neil Hodis; Hooman Allayee; Roberta Diaz Brinton; Roksana Karim Journal: Am J Cardiol Date: 2019-07-15 Impact factor: 2.778
Authors: Joris Deelen; Marian Beekman; Hae-Won Uh; Quinta Helmer; Maris Kuningas; Lene Christiansen; Dennis Kremer; Ruud van der Breggen; H Eka D Suchiman; Nico Lakenberg; Erik B van den Akker; Willemijn M Passtoors; Henning Tiemeier; Diana van Heemst; Anton J de Craen; Fernando Rivadeneira; Eco J de Geus; Markus Perola; Frans J van der Ouderaa; David A Gunn; Dorret I Boomsma; André G Uitterlinden; Kaare Christensen; Cornelia M van Duijn; Bastiaan T Heijmans; Jeanine J Houwing-Duistermaat; Rudi G J Westendorp; P Eline Slagboom Journal: Aging Cell Date: 2011-05-06 Impact factor: 9.304