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  • Title: Influence of apolipoprotein E genotype on lipid and lipoprotein levels in continuous ambulatory peritoneal dialysis patients.
    Author: Choi KH, Song HY, Shin SK, Noh H, Kang SW, Kim JH, Lee HY, Han DS.
    Journal: Adv Perit Dial; 1999; 15():243-6. PubMed ID: 10682111.
    Abstract:
    Apolipoprotein (Apo) E has an important role in triglyceride (TG)-rich lipoprotein metabolism, and the genotype of Apo E is associated with premature coronary artery disease. Patients undergoing continuous ambulatory peritoneal dialysis (CAPD) develop various abnormalities of lipid metabolism and are prone to develop accelerated atherosclerosis. To investigate the distribution of Apo E genotype, and to evaluate the influence of Apo E polymorphism on lipid metabolism in CAPD patients, we measured Apo E genotypes, serum lipid, and lipoprotein levels in 54 CAPD patients (M:F = 1:1). The most common genotype of Apo E in the CAPD patients was E 3/3, found in 68.5%. The frequencies of the other genotypes were E 2/3, found in 14.8%, and E 4/3, found in 16.7%. No genotypic differences in Apo E were seen in the patients with regard to the presence of diabetes, the level of parathyroid hormone, or the transport characteristics of the peritoneal membrane. When comparing lipid levels by Apo E genotype, the total cholesterol and TG levels of E 2/3 patients were significantly higher than those of E 3/3 or E 4/3 patients. The differences in high-density or low-density lipoprotein cholesterol levels by Apo E genotype were not significant. In comparing lipoprotein levels by Apo E genotype, the Apo B and lipoprotein (a) levels of E 2/3 patients were significantly lower than those of E 3/3 or E 4/3 patients. In conclusion, the Apo E 3/3 genotype seems to be the most common genotype in CAPD patients, and the Apo E 2/3 genotype appears to be associated with high cholesterol and TG levels. These results demonstrate the need for further prospective studies in these subjects aimed at elucidating the impact of genetic variation at the Apo E locus on the development of atherosclerosis.
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