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[I/D polymorphism of angiotensin converting enzyme gene and myocardial infarction]
11st Department of Internal Medicine, Shiga University of Medical Science, Ohtsu 520-2192.
Insights
The angiotensin converting enzyme (ACE) II genotype may indicate a longer time to myocardial infarction. This suggests ACE gene variants are linked to fibrinolytic activity in heart disease patients.
Area of Science:
- Cardiovascular Genetics
- Molecular Cardiology
- Thrombosis and Fibrinolysis
Context:
- The association between the angiotensin converting enzyme (ACE) DD genotype and myocardial infarction risk is debated.
- Discrepancies in findings may stem from varied definitions of ischemic heart disease.
- Understanding genetic predispositions is crucial for cardiovascular disease risk stratification.
Purpose:
- To investigate the relationship between ACE gene polymorphisms and the clinical course of ischemic heart disease.
- To explore whether ACE genotype influences the time from initial angina to myocardial infarction.
- To clarify the role of ACE gene variants in the context of fibrinolytic activity.
Summary:
- This study analyzed 320 patients with suspected ischemic heart disease undergoing coronary angiography.
- The II genotype of the ACE gene was significantly associated with a prolonged interval between the onset of anginal pain and myocardial infarction.
- This finding suggests a potential link between ACE gene variations and altered fibrinolytic processes.
Impact:
- The ACE gene genotype may serve as a predictive marker for the progression of ischemic heart disease.
- This research contributes to understanding the genetic underpinnings of fibrinolytic activity in cardiovascular disease.
- Findings may inform future diagnostic or therapeutic strategies targeting the ACE pathway in at-risk populations.
Abstract:
The DD genotype of angiotensin converting enzyme gene has been reported to be a risk factor for myocardial infarction. However, this association has not been confirmed in some study populations. We hypothesized that the discrepancies between these studies may be due to variations in the definition of ischemic heart diseases. According to the genotype of the ACE gene, we analyzed the profiles of 320 patients who underwent coronary angiography for suspected ischemic heart disease. We found that the II genotype of the ACE gene was associated with a longer period of time between the first anginal pain and the onset of myocardial infarction. Because higher ACE has been reported to be associated with higher plasminogen activator inhibitor-1 activity, our observation suggests that the genotype of the ACE gene is a marker of fibrinolytic activity.