Nutrition and thrombogenic factors.

Area of Science:

• Cardiovascular Disease Epidemiology
• Nutritional Science
• Thrombosis Research

Background:

• Retrospective studies in the 1980s indicated a link between fish consumption and lower ischemic heart disease (IHD) mortality.
• Fish oils, particularly eicosapentaenoic acid (EPA), were found to inhibit platelet aggregation and thromboxane production.
• Prospective studies like the DART and Lyon Heart studies further supported diet's role in IHD prevention and secondary myocardial infarction prevention.

Purpose of the Study:

• To explore the interrelationships between diet, thrombotic factors, and ischemic heart disease (IHD).
• To investigate the impact of nutrients on hemostatic variables relevant to myocardial ischemia.
• To assess the extent to which dietary interventions affect hemostatic variables in ischemia prevention studies.

Main Methods:

• Review of retrospective and prospective epidemiological studies on fish consumption and IHD.
• Analysis of experimental data on the effects of eicosapentaenoic acid (EPA) on platelet function.
• Examination of findings from large-scale dietary intervention trials (e.g., DART, Lyon Heart Study).

Main Results:

• Consistent evidence suggests an inverse relationship between fish intake and IHD mortality.
• EPA and other nutrients influence key determinants of myocardial ischemia, including fibrinogen and factor VII.
• While studies show nutrient effects on thrombotic factors, the precise impact within dietary prevention strategies remains unclear.

Conclusions:

• Dietary factors, especially fish consumption and its EPA content, show promise in reducing ischemic heart disease risk.
• Nutrients can modulate hemostatic variables implicated in arterial thrombosis.
• Further research is needed to fully elucidate the role of specific nutrients and their impact on hemostatic variables in the context of dietary strategies for preventing myocardial ischemia.