Common Variants in Candidate Genes and Premature MI Risk
关键词
抽象
描述
BACKGROUND:
Inherited factors play a role in the pathogenesis of myocardial infarction (MI), and there is growing interest in identifying common genetic susceptibility markers that interact with common environmental exposures to contribute to the occurrence of myocardial infarction (MI) in the population.
DESIGN NARRATIVE:
The study had a case-control design. The preliminary data addressed the contribution of common genetic and environmental factors to the risk of MI among women under 45 years of age. Those data showed that common polymorphisms in genes coding for two clotting factors, coagulation Factor V and coagulation Factor II, were risk factors for MI only among cigarette smokers in this sample. These relationships, and others observed, provided strong evidence of gene-environment interactions between thrombotic and atherosclerotic factors in early-onset MI. One intent was to determine whether the risk of early-onset MI was related to interactions between environmental factors (e.g., cigarette smoking, exercise, alcohol consumption) and common polymorphisms in genes coding for thrombotic factors (coagulation Factor V, coagulation Factor II, plasminogen activator inhibitor-1, and beta-fibrinogen) and atherosclerotic factors (the adhesion molecule E-selectin and metalloproteinase stromelysin-1; the lipid metabolism enzymes paraoxinase, lipoprotein lipase, cholesterol ester transfer protein; and the apolipoproteins apolipoprotein E and apolipoprotein B). Additionally, there were plans to determine whether the risk of early-onset MI was related to interactions between plasma lipoprotein(a) levels (which were largely genetically determined) and environmental risk factors and/or polymorphisms in the candidate genes. Interactions among candidate polymorphisms were also assessed.
Newly-diagnosed cases of MI and controls will be interviewed in person to assess medical and behavioral characteristics related to MI risk. A venous blood sample will be obtained and processed into aliquots of plasma and white cells. DNA extracted from the white cells will be tested using the polymerase chain reaction (PCR), PCR/restriction fragment length polymorphisms (RFLP), and oligonucleotide ligation assays to determine the genotypes of interest. Plasma will be tested for lipid, lipoprotein, and homocysteine concentrations. Analyses will address both the overall association between the genotypes and MI risk, along with posited gene-environment and gene-gene interactions.
日期
最后验证: | 12/31/2004 |
首次提交: | 05/24/2000 |
提交的预估入学人数: | 05/24/2000 |
首次发布: | 05/25/2000 |
上次提交的更新: | 02/07/2016 |
最近更新发布: | 02/09/2016 |
实际学习开始日期: | 06/30/1998 |
预计完成日期: | 07/31/2002 |
状况或疾病
相
资格标准
有资格学习的年龄 | 18 Years 至 18 Years |
有资格学习的性别 | All |
接受健康志愿者 | 是 |
标准 | No eligibility criteria |