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Polymorphism of apolipoprotein E
Author(s) -
Utermann G.,
Pruin N.,
Steinmetz A.
Publication year - 1979
Publication title -
clinical genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.543
H-Index - 102
eISSN - 1399-0004
pISSN - 0009-9163
DOI - 10.1111/j.1399-0004.1979.tb02028.x
Subject(s) - phenotype , apolipoprotein e , apolipoprotein b , triglyceride , allele , very low density lipoprotein , medicine , endocrinology , heterozygote advantage , biology , cholesterol , polymorphism (computer science) , lipoprotein , genetics , gene , disease
The two autosomal codominant alleles of the Apo E‐N/D polymorphism, Apo E and Apo E (1 , have a considerable influence on plasma lipid levels and distribution in man. Serum cholesterol levels are highest in phenotype Apo E‐N, intermediate in phenotype Apo E‐ND, and low in phenotype Apo E‐D. Contrary VLDL‐cholesterol is highest in phenotype Apo E‐D, intermediate in heterozygotes, and lowest in phenotype Apo E‐N. Serum‐triglyceride, VLDL‐triglyceride and the ratio of VLDL‐cholesteroI/serum‐triglyceride are also intermediate in phenotype Apo E‐ND between the two opposite homozygous groups. 10 % of heterozygous Apo E‐ND subjects exhibited a β‐VLDL subfraction compared to 0.8 % in phenotype Apo E‐N and 100 % in Apo E‐D. Hence the three phenotypic groups exhibit metabolic differences in vivo , and the gene Apo E'l has a mild dyslipoproteincmic effect even in a single dose. The Apo E‐N/D polymorphism may therefore be a major influence on the occurrence of arteriosclerotic vascular disease in man.