Circulation:细胞疗法对外周动脉疾病运动性能和肢体灌注疗效评价

2017-04-14 xiangting MedSci原创

ALDHbr细胞给药不能改善PWT或磁共振结果,PWT的变化与磁共振成像终点没有相关性。

动脉粥样硬化外周动脉疾病在> 65岁的美国人中的发病率为8%至12%,并与功能状态明显下降、心梗和卒中发生率升高以及缺血性截肢的风险升高具有相关性。目前跛行的治疗策略有局限性。PACE(对间歇性跛行患者注射ALDH细胞)是一项由国家心脏、肺和血液研究所资助,随机、双盲、安慰剂对照的二阶段临床试验,该试验旨在评估用自体骨髓提取的醛脱氢酶光亮细胞(ALDHbr)治疗外周动脉疾病的安全性和有效性,并探讨跛行的相关生理机制。

所有参与者按照1:1比例随机接受ALDHbr细胞或安慰剂治疗。抽吸自体骨髓和分离ALDHbr细胞,随后分10次注射到大腿和小腿。主要终点为从基线到6个月峰值步行时间(PWT)的改变、侧枝数、峰值充血腘窝血流、通过磁共振成像测量的毛细血管灌注以及安全性。 

研究共入组82名跛行和下肢外周动脉疾病患者,其中78例有可分析的资料(57名男性,21名女性,平均年龄66±9岁)。组间PWT6个月内变化(0.9±0.8分钟,95%置信区间[CI] -0.6-2.5;P = 0.238),侧枝数(0.9±0.6动脉,95%CI -0.2-2.1;P = 0.116),峰值充血腘窝血流(0.0±0.4 mL / s,95%CI -0.8-0.8 ;P = 0.978),毛细血管灌注(-0.2±0.6%,95%CI -1.3-0.9;P = 0.752)均值±SEM差异不显著。此外次要终点差异没有显著性,包括生活质量。没有不良的结果。磁共振成像测量与PWT之间没有明显相关性。探索性分析表明,对于完全性股动脉闭塞患者ALDHbr细胞注射可能与侧支动脉数量增多有关(1.5±0.7;95%CI,0.1-2.9;P = 0.047)。

由此可见,ALDHbr细胞给药不能改善PWT或磁共振结果,PWT的变化与磁共振成像终点没有相关性。该项研究为未来的外周动脉疾病细胞治疗研究试验设计可提供了新的解剖和灌注的视角。

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    2017-04-16 huagfeg
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    2017-04-14 Anyway

    学习了

    0