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Published on: April 6, 2017
Alcohol and platelet aggregation: the Caerphilly Prospective Heart Disease Study
S C Renaud1, A D Beswick, A M Fehily
1INSERM Unit 63, Bron, France.
Insights
Moderate alcohol consumption may reduce platelet aggregation, a key factor in heart disease. This effect appears dose-dependent and is influenced by dietary fat intake, suggesting a link between diet, alcohol, and cardiovascular health.
Area of Science:
- Cardiovascular Health
- Nutritional Epidemiology
- Hemostasis
Background:
- Dietary factors, including alcohol and fats, play a role in cardiovascular disease (CVD).
- Platelet aggregation is a critical process in the development of arterial thrombosis and CVD.
- Understanding the interplay between diet, alcohol, and platelet function is crucial for CVD prevention.
Purpose of the Study:
- To investigate the association between alcohol intake and platelet aggregation in middle-aged men.
- To explore the influence of dietary saturated and polyunsaturated fatty acids on this relationship.
- To determine potential mechanisms linking alcohol consumption to coronary heart disease risk.
Main Methods:
- Dietary intake of alcohol and fatty acids assessed via questionnaire in 1600 men (49-66 years).
- Platelet aggregation measured in response to adenosine diphosphate (ADP) and collagen.
- Analysis adjusted for smoking and stratified by dietary fat intake.
Main Results:
- Alcohol consumption was associated with significantly reduced platelet aggregation in response to ADP and collagen.
- This effect was dose-dependent and more pronounced in men with high saturated or low polyunsaturated fat intake.
- Platelet responsiveness to thrombin showed a slight increase with alcohol consumption.
Conclusions:
- Alcohol intake may beneficially modulate certain platelet functions, potentially reducing coronary heart disease risk.
- Dietary fat composition appears to modify the effects of alcohol on platelet aggregation.
- These findings suggest a complex interaction between alcohol, diet, and hemostasis in cardiovascular health.
Abstract:
Intakes of alcohol and saturated fatty acids were determined through a dietary questionnaire from 1600 men (aged 49-66 y) in the Caerphilly Prospective Heart Disease Study. Platelet aggregation induced by thrombin adenosine disphosphate (ADP), and collagen was studied in subjects who had fasted and had not recently taken drugs affecting platelets. In subjects who drank alcohol, the odds ratio of a high response to aggregation was significantly reduced (primary ADP, P less than 0.05; secondary ADP, P less than 0.001; collagen, P less than 0.02). The significance was enhanced by adjusting for smoking and by including only the subjects with a high intake of saturated fatty acids or a low intake of polyunsaturated fatty acids. By contrast, the responsiveness to thrombin was slightly increased at all levels of alcohol consumption. We therefore suggest that part of the effects of alcohol on coronary heart disease may be mediated by a dose-dependent effect on certain platelet functions, modulated by the intake of dietary fat.
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