Title

The Effect Of Apolipoprotein E Genotype On Serum Lipoprotein Particle Response To Exercise

Keywords

Aerobic exercise; Apo E; Lipid metabolism; Lipoproteins; Particle size

Abstract

Exercise affects lipoprotein metabolism and apolipoprotein E (Apo E) genotype may alter changes in lipoprotein subclasses that occur with exercise. The present study examined the effects of Apo E genotype (APOE) on the response of lipoprotein subclass concentrations to long-term exercise. A prospective longitudinal study, conducted at seven centers, genetically screened 566 individuals to create three cohorts of healthy adults, equal for gender and the most common APOE variants: E2/3 (n = 35), E3/3 (n = 40), and E3/4 (n = 31). Subjects with body mass index (BMI) ≥31 or evidence of dyslipidemia or metabolic disease were excluded. All subjects exercised aerobically at 75% of maximal heart rate for 40 min, four times weekly for 6 months. Fasting lipoprotein subpopulations were measured before and after exercise training using proton nuclear magnetic resonance spectroscopy. Serum lipids for the entire cohort did not change with exercise training, but the LDL subpopulation response varied by APOE. Small-sized LDL particles decreased only in the APOE3 homozygotes whereas medium-sized LDL particles increased only in this group. These changes were directionally different from the responses in the E2/3 and E3/4 subjects (p < 0.05). Neither exercise nor APOE variant affected overall LDL or HDL size or cholesterol concentration, but exercise decreased VLDL diameter by 3.5 nm (p < 0.001) attributable to decreases in large VLDL in each APOE group. In conclusion, APOE variants influence the serum LDL subpopulation response to exercise training in normolipidemic subjects. Subjects homozygous for APOE3 experienced the most beneficial lipid effects from exercise training. © 2005 Elsevier Ireland Ltd. All rights reserved.

Publication Date

9-1-2006

Publication Title

Atherosclerosis

Volume

188

Issue

1

Number of Pages

126-133

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.atherosclerosis.2005.06.050

Socpus ID

33746528875 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33746528875

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