Stroke :西洛他唑和单硝酸异山梨酯,对脑血流动力学的影响

2021-12-18 Freeman MedSci原创

用磁共振成像测量脑血管功能在临床试验中是可行的。

脑小血管疾病(SVD)是导致中风和痴呆的一个主要原因。目前没有具体的治疗方法来阻止疾病的发展。SVD与脑血管反应性(CVR2;血管增加血流的能力)降低、更多的脉动血流和脑脊液(CSF)动力学受损有关。

单硝酸异山梨酯(ISMN)和西洛他唑具有药理作用,可以改善这些脑血管功能障碍。西洛他唑可以减少中风复发,并可能减少认知障碍。三硝酸甘油酯-一种比ISMN更短效的硝酸酯-改善了一些缺血性中风后早期治疗的患者的认知评分。


在LACI-1试验(LACunar Intervention-1)中,爱丁堡大学的Gordon W. Blair等人, 测量了随机分配到接受ISMN或西洛他唑单药治疗、联合治疗或避免使用这些药物的腔隙性中风患者的CVR、脑血流和CSF动态。

参与者被随机分配到单独的ISMN,单独的西洛他唑,同时使用ISMN和西洛他唑,或不使用药物。参与者在基线时和用药8周后接受结构、脑血管反应性(对6%二氧化碳)和相位对比脉动磁共振成像。

在27名参与者中(平均年龄,68±7.7;44%为女性),22人完成了脑血管反应性和脉动性成像,有完整的数据集。

白质脑血管反应性在ISMN(β=0.021%/mm Hg [95% CI, 0.003-0.040])和西洛他唑(β=0.035%/mm Hg [95% CI, 0.014-0.056])单药治疗组以及服用任何药物与不服用药物者(β=0.021%/mm Hg [95% CI, 0.005-0.037])中有所增加。


尽管受到小样本的限制,但其证明用磁共振成像测量脑血管功能在临床试验中是可行的,而且ISMN和西洛他唑可以改善脑血管功能。

原文出处:
Blair GW, Janssen E, Stringer MS, et al. Effects of Cilostazol and Isosorbide Mononitrate on Cerebral Hemodynamics in the LACI-1 Randomized Controlled Trial. Stroke. Published online December 2021:STROKEAHA.121.034866. doi:10.1161/STROKEAHA.121.034866

 

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