It indicated that the imbalance of endothelium derived relaxing factor (NO) and the endothelium derived constricting factor (ET) was a major cause of vasospasm after SAH.

结果表明，脑血流内皮舒张因子和内皮收缩因子之间的平衡紊乱是SAH后脑血管痉挛发生的机制之一。

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The finding of endothelium derived relaxing factor(EDRF) and the illumination of its chemical identity, bio-synthesis and physiological functions promoted greatly the research on vascular disease.

内皮细胞衍生的舒张因子（EDRF）的发现及其化学本质、生物合成及生理功能的阐明，对心血管病研究产生深远影响。

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Conclusion: the protective mechanisms of YQTLP were related to inhibit lipid peroxidation, protect endothelium-derived relaxing factor and adjust the fibrinolytic activities.

结论：益气通络丹的疗效机制与抑制脂质过氧化、保护内皮依赖性松弛因子和调节纤溶活性有关。

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