The Role of the t-PA I/D and PAI-1 4G/5G Polymorphisms in African-American Adults With a Diagnosis of Myocardial Infarction or Venous Thromboembolism
2000
Abstract To determine whether or not the PAI-1 4G/5G and t-PA I/D polymorphisms in African-Americans were linked to cardiovascular disease, the association of these polymorphisms to disease expression was analyzed in a recently completed case-control study of myocardial infarction or venous thromboembolism among African-Americans. All African-Americans patients with a history of venous thromboembolism attending an anticoagulant clinic, and patients with a history of a MI attending a cardiology clinic at a large local urban public hospital were eligible for inclusion as cases in the study. In this study it was observed that there was a statistically significant association between the D allele of the t-PA I/D polymorphism and venous thromboembolism and a nonsignificant association between the D allele and myocardial infarction among African-Americans. t-PA antigen levels were statistically significantly higher among both myocardial infarction and venous thromboembolism cases compared with control subjects. The genotypes were unrelated to t-PA plasma levels. There was no association between either myocardial infarction or venous thromboembolism and the 4G/5G PAI-1 genotype. It was also found that genotype frequencies for both PAI-1 4G/5G and t-PA I/D polymorphisms in African-American adults were different from those reported for both U.S. Causcians and Europeans.
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