Title | LPL polymorphism predicts stroke risk in men. |
Publication Type | Journal Article |
Year of Publication | 2002 |
Authors | Morrison, AC, Ballantyne, CM, Bray, M, Chambless, LE, A Sharrett, R, Boerwinkle, E |
Journal | Genet Epidemiol |
Volume | 22 |
Issue | 3 |
Pagination | 233-42 |
Date Published | 2002 Mar |
ISSN | 0741-0395 |
Keywords | Apolipoproteins E, Genetic Predisposition to Disease, Genotype, Humans, Lipoprotein Lipase, Logistic Models, Magnetic Resonance Imaging, Male, Middle Aged, Polymorphism, Genetic, Predictive Value of Tests, Proportional Hazards Models, Prospective Studies, Risk Factors, Stroke |
Abstract | Variation in lipid levels has been associated with atherosclerotic vascular disease, including stroke. Genes contributing to interindividual variation in lipid levels may play a role in the etiology of stroke, either through their effects on lipid synthesis and metabolism or through separate pathways. For this reason, we sought to examine the association between polymorphisms in the lipoprotein lipase (LPL) and apolipoprotein E (APOE) genes and subclinical and clinical stroke in the Atherosclerosis Risk in Communities (ARIC) Study. Subclinical stroke was determined by cerebral magnetic resonance imaging (MRI). Subclinical cerebral infarct cases (n = 197) were compared to a stratified random sample identified from individuals participating in the MRI examination (n = 200). Incidence of clinical ischemic stroke was determined by following the ARIC cohort for an average of 7.5 years for potential cerebrovascular events; 218 validated clinical ischemic strokes were identified. A stratified random sample of the ARIC cohort (CRS, n = 964) was used as the comparison group for clinical cases. The LPL S291-carrying genotypes and APOE epsilon2- and epsilon4-carrying genotypes were not significantly associated with subclinical or clinical stroke. The LPL X447-containing genotypes were significantly associated with subclinical (odds ratio [OR], 4.32; 95% confidence interval [CI], 1.23-15.15; P = 0.020) and clinical stroke (hazard rate ratio [HRR], 2.57; 95% CI, 1.24-5.34; P = 0.01) in men, both by themselves and after adjustment for multiple stroke risk factors. The LPL S447X polymorphism is significantly associated with subclinical cerebral infarction and incident clinical ischemic stroke in men from a middle-aged American population. This association does not appear to be mediated by triglyceride, high-density lipoprotein (HDL)- and low-density lipoprotein (LDL)-cholesterol levels, or additional stroke risk factors. |
DOI | 10.1002/gepi.0191 |
Alternate Journal | Genet Epidemiol |
PubMed ID | 11921083 |
Grant List | N01-HC-55015 / HC / NHLBI NIH HHS / United States N01-HC-55016 / HC / NHLBI NIH HHS / United States N01-HC-55018 / HC / NHLBI NIH HHS / United States N01-HC-55020 / HC / NHLBI NIH HHS / United States N01-HC-55021 / HC / NHLBI NIH HHS / United States N01-HC-55022 / HC / NHLBI NIH HHS / United States |
LPL polymorphism predicts stroke risk in men.
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