Pain:咪达唑仑是否可以用作活性安慰剂?

2017-04-11 MedSci MedSci原创

作用于中枢的止痛剂具有一定的副作用,因此不建议在止痛化合物的早期转化试验中使用非活性安慰剂。苯二氮卓类是否混淆了急性疼痛测试的结果尚未可知。近期,一项发表在PAIN上的文章使用苯二氮卓类进行了研究。此项研究招募了24个健康志愿者,选择三个伤害感受器模型进行,包括接触热,电痛和压力疼痛阈值;咪达唑仑(0.06mg/kg)作为活性安慰剂。在这项随机、安慰剂(盐水)控制的三路交叉试验中,芬太尼(1 mc

作用于中枢的止痛剂具有一定的副作用,因此不建议在止痛化合物的早期转化试验中使用非活性安慰剂。苯二氮卓类是否混淆了急性疼痛测试的结果尚未可知。

近期,一项发表在PAIN上的文章使用苯二氮卓类进行了研究。

此项研究招募了24个健康志愿者,选择三个伤害感受器模型进行,包括接触热,电痛和压力疼痛阈值;咪达唑仑(0.06mg/kg)作为活性安慰剂。

在这项随机、安慰剂(盐水)控制的三路交叉试验中,芬太尼(1 mcg/Kg)作为内部验证者。
研究数据使用单向重复测量方差分析和Tukey测试分析主要结果参数(接触热痛)。

结果显示:与安慰剂相比,与安慰剂相比,咪达唑仑对接受热(平均差异-1.7,95%CI -10.6; 7.3,p = 0.89)或电痛(4.3,-5.1;13.7; p = 0.51)的疼痛的减轻作用并没有统计学差异,也没有提高压力疼痛阈值(-28 kPa,-122; 64 kPa,p = 0.73)。

置信区间的宽度表明,与安慰剂相比,其也没有临床意义上的镇痛作用。

相比之下,芬太尼的镇痛效力在所有三种模型(p <0.01 vs. 咪达唑仑和安慰剂)中均有显著效果。

此项研究的结果表明,咪达唑仑可用作镇痛药物试验中的活性安慰剂。

原始出处:
Prosenz J, Gustorff B. Midazolam as an active placebo in three fentanyl-validated nociceptive pain models. Pain. 2017 Mar 23. doi: 10.1097/j.pain.0000000000000910.

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    2017-04-24 往日如昨

    继续学习中,谢谢

    0

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    2017-04-24 往日如昨

    学习了谢谢分享

    0

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    2017-04-12 lemon985

    可以吗

    0

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    2017-04-11 克勤

    学习了

    0