为观察硫化氢(H2S)对同型半胱氨酸(HCY)刺激血小板聚集的影响及机制,在HCY刺激腺苷二磷酸(ADP)诱导的血小板聚集模型上加入不同浓度H2S干预,采用Born's法测定血小板聚集率,Greiss法测定血小板孵育液中亚硝酸盐(NO2-)含量.结果表明:H2S呈浓度依赖的抑制HCY刺激ADP诱导的血小板聚集,显著增加血小板NO释放.Person相关分析,H2S拮抗HCY促血小板聚集作用与NO生成呈负相关(r2=-0.438 7,P＜0.01).由此可见,H2S可拮抗HCY对血小板的效应,其机制可能与改善血小板NO释放有关.
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