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Alcohol and Coronary Spasm

3rd Department of Internal Medicine, Tokyo Medical and Dental University, Tokyo, Japan

Makoto Suzuki

3rd Department of Internal Medicine, Tokyo Medical and Dental University, Tokyo, Japan

Toshiyuki Oniki

3rd Department of Internal Medicine, Tokyo Medical and Dental University, Tokyo, Japan

Yukio Kishi

3rd Department of Internal Medicine, Tokyo Medical and Dental University, Tokyo, Japan

Fujio Numano

3rd Department of Internal Medicine, Tokyo Medical and Dental University, Tokyo, Japan

Alcohol is known to sometimes cause coronary spasm, the mechanism of which is still unknown. The authors monitored changes in plasma levels of prostanoids (thromboxane [TX B ₂], 6-keto prostaglandin F₁ [PGF₁]), catecholamines (CA), serotonin (5-HT), cyclic nucleotides (cyclic adenosine monophosphate—cAMP, cyclic guanosine monophosphate— cGMP), and platelet aggregation after alcohol ingestion (Japanese rice wine 400 mL) in 8 patients with alcohol-induced variant angina and 8 healthy men as controls. Coronary spasm was confirmed to have been induced in 4 patients nine hours after alcohol challenge (VA[+]), when their plasma ethanol levels had already returned to a null level. Neither CA nor 5-HT levels showed any change after alcohol ingestion either in patients or controls, though controls showed high levels of CA during alcohol ingestion. TX B2 in VA (+) patients increased gradually after alcohol ingestion to reach up to a statistically signifi cantly high level just before attack, as compared with those of controls and VA(-) patients, who, on the contrary, did not show such changes. The levels of 6-keto PGF₁, however, which were significantly lower in patients than in controls before the test, exhibited a gradual increase in VA (+) patients in parallel with the increase in TX B₂.

No significant changes in cAMP levels between either controls or patients were present.

On the contrary, cGMP levels had a gradual decrease in patients after alcohol ingestion. Especially six hours after alcohol ingestion, cGMP levels in VA (+) patients decreased so much as to make a statistically significant difference, as compared with the level in controls.

Platelet aggregability in controls showed a decrease after alcohol ingestion, in spite of no change or even increase in patients.

These data suggest that low levels of PGF₁ and the decrease of cGMP levels from alcohol ingestion play important roles in the mechanism of coronary spasm induced by alcohol ingestion.

Angiology, Vol. 45, No. 3, 187-197 (1994)
DOI: 10.1177/000331979404500303


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