Eicosapentaenoic acid showed mixed resultsImprovement of coronary vasomotion with eicosapentaenoic acid does not inhibit acetylcholine-induced coronary vasospasm in patients with variant angina.
Most Relevant Research
We examined how eicosapentaenoic acid (EPA), a key ingredient found in fish oil, impacts chest pain in patients with variant angina. Our study followed 22 individuals with this condition, where we infused acetylcholine, a substance known to cause coronary vasospasm, both before and after a four-month course of EPA treatment (1.8 g/day for 12 patients).
In the group that did not receive EPA, we observed no changes in how their coronary arteries responded to acetylcholine over time. However, for those treated with EPA, the results were quite intriguing. In non-spastic areas, the response shifted from vasoconstriction (narrowing) to vasodilation (widening). This indicates a notable improvement in how these arteries are functioning.
Yet, when it came to spastic sites where vasospasm had occurred, the coronary arteries remained responsive to acetylcholine, and the vasospasm persisted despite the EPA treatment. Thus, while EPA enhanced coronary responsiveness in some areas, it did not eliminate the acetylcholine-induced coronary vasospasms associated with variant angina.
Relieved chest pain
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