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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Gotto, A. M. Brown, S. A. Boerwinkle, E. Patsch, W. Rohrbach, K. |
| Description | Author Affiliation: Boerwinkle E ( Center for Demographic and Population Genetics, University of Texas Health Science Center, Houston 77225.) |
| Abstract | A large segment of the population is modifying its dietary cholesterol intake to achieve a healthier life-style. However, all individuals do not respond equally. We have investigated the effects that that two physiologically important polymorphisms in the apolipoprotein (apo) E and B genes have on the responses of plasma lipid, lipoprotein, and apolipoprotein levels to a high-cholesterol diet. Over a 6-wk period, individuals were prescribed two diets, one consisting of 300 mg dietary cholesterol/d for 3 wk and one consisting of 1,700 mg dietary cholesterol/d for 3 wk. Total cholesterol, low-density-lipoprotein cholesterol (LDL-C), and apo B levels were significantly increased on the high-cholesterol diet. Average total cholesterol (numbers in parentheses are SDs) went from 167.6 (23.4) mg/dl on the low-cholesterol diet to 190.8 (36.2) mg/dl on the high-cholesterol diet; LDL-C went from 99.9 (24.8) mg/dl to 119.2 (33.4) mg/dl, and apo B went from 74.9 (24.5) mg/dl to 86.8 (29.5) mg/dl. In 71 individuals, the frequencies of the apo epsilon 2, epsilon 3, and epsilon 4 alleles were .09, .84, and .07, respectively. The frequency of the longer, apo B signal peptide allele (5'beta SP27) was .68. Apo epsilon 2/3 individuals had significantly lower LDL-C levels than did epsilon 3/3 homozygotes, on both the low-cholesterol diet (LDL-C lower by 21 mg/dl) and the high-cholesterol diet (LDL-C lower by 27 mg/dl). Average triglyceride levels were significantly different among apo B signal peptide genotypes, with the 5'beta SP27/37 homozygotes having the lowest levels (70 mg/dl). When individuals were switched from the low-cholesterol diet to the high-cholesterol diet, in no case were the average responses in lipid levels significantly different among apo E or B genotypes. Therefore, these gene loci do not have a major effect on the response of lipid levels to increased dietary cholesterol. |
| ISSN | 00029297 |
| e-ISSN | 15376605 |
| Journal | The American Journal of Human Genetics |
| Issue Number | 6 |
| Volume Number | 49 |
| Language | English |
| Publisher | Cell Press (on behalf of American Society of Human Genetics) |
| Publisher Date | 1991-12-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Apolipoproteins B Genetics Apolipoproteins E Cholesterol, Dietary Pharmacology Genetic Variation Lipids Blood Lipoproteins Body Weight Cholesterol, Hdl Cholesterol, Ldl Diet, Atherogenic Molecular Sequence Data Research Support, U.s. Gov't, P.h.s. Discipline Human Genetics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Genetics (clinical) |
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