Int J Cardiol:短期大剂量叶酸不会改变冠心病患者内皮细胞的损伤

2019-09-16 不详 网络

内皮功能障碍是冠心病的早期临床前表现,并且与血管性血友病因子(vWF),可溶性E-选择素和血栓调节蛋白,内皮细胞损伤/活化的标志物的血浆水平升高以及一氧化氮生物的利用度降低有关。同型半胱氨酸与心血管疾病和死亡风险增加有关。大剂量叶酸处理可使血浆同型半胱氨酸降低25%,并提高一氧化氮的生物利用度;然而,目前尚未在冠心病和肾功能正常的患者中探究其对内皮细胞活化/损伤的其他指标的影响。采用随机,双盲,交

内皮功能障碍是冠心病的早期临床前表现,并且与血管性血友病因子(vWF),可溶性E-选择素和血栓调节蛋白,内皮细胞损伤/活化的标志物的血浆水平升高以及一氧化氮生物的利用度降低有关。同型半胱氨酸与心血管疾病和死亡风险增加有关。大剂量叶酸处理可使血浆同型半胱氨酸降低25%,并提高一氧化氮的生物利用度;然而,目前尚未在冠心病和肾功能正常的患者中探究其对内皮细胞活化/损伤的其他指标的影响。

采用随机,双盲,交叉研究设计,纳入50名血清肌酐正常的冠心病患者,给予叶酸(5mg /日)6周,并分析血液中的血管性血友病因子,可溶性E-选择素和血栓调节蛋白的水平。通过流式介导的扩张评估内皮一氧化氮的生物利用度。

结果显示,积极治疗后血浆叶酸水平(9.1 +/- 3.4 VS. 310 +/- 235 microg/l; p <0.001)和一氧化氮生物利用度提高(47 +/- 35 VS. 110 +/- 43 microm; p <0.001)。然而,内皮细胞损伤的标志物没有发生显著影响(血管性血友病因子118 +/- 33 VS. 119 +/- 34%; E-选择素52 +/- 17对51 +/- 16 microg/l;血栓调节蛋白3.94 +/- 1.81 VS. 3.94 +/- 1.51 microg /l; p = NS)。在流式介导的扩张的改善和内皮标记蛋白的变化之间没有观察到相关性。

综上所述,这些数据表明内皮标志物不是冠心病中内皮一氧化氮生物利用度的有用替代物,并且在作为内皮功能标记物方面其灵敏度差于一氧化氮。

原始出处:

Doshi SN, Moat SJ, et al., Short-term high-dose folic acid does not alter markers of endothelial cell damage in patients with coronary heart disease. Int J Cardiol. 2004 Apr;94(2-3):203-7.

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