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Sci Rep:西地那非和坦索罗辛响应的年龄相关差异是由于肌原性的平滑肌张力引起

2017-09-05 AlexYang MedSci原创

由于良性前列腺增生(BPH)的下尿路症状(LUTS)在老年人中高度流行,并且对病人的生活品质有着深远的影响。目前BPH/LUTS治疗方法以神经性平滑肌张力为治疗靶标,但是响应不可预测并且许多病人没有治疗响应。自发的血管肌源性收缩是平滑肌收缩的另一种组成,并且在人类前列腺中并未鉴定。为了更高的理解和改善病人响应的预测性,最近,研究人员利用人类前列腺标本明确了肌源性收缩,并且检测了已存在疗法的效应。研

由于良性前列腺增生(BPH)的下尿路症状(LUTS)在老年人中高度流行,并且对病人的生活品质有着深远的影响。目前BPH/LUTS治疗方法以神经性平滑肌张力为治疗靶标,但是响应不可预测并且许多病人没有治疗响应。自发的血管肌源性收缩是平滑肌收缩的另一种组成,并且在人类前列腺中并未鉴定。为了更高的理解和改善病人响应的预测性,最近,研究人员利用人类前列腺标本明确了肌源性收缩,并且检测了已存在疗法的效应。

研究发现,肌源性活性在人类前列腺中是存在的,并且在来自诊断为BPH病人的转变区样本中收缩频率大约是匹配对照的160%。α1-肾上腺受体拮抗剂(坦索罗辛)和PDE5抑制剂(西地那非)均显著的减少了肌源性的收缩参数,包括频率,并且具有明显的病人间的多态性。另外,坦索罗辛在老年病人中(R2?=?0.36, p?<?0.01)以及具有更大前列腺体积男性中(R2?=?0.41, p?<?0.05)更加有效,然而西地那非在年轻男性中更加有效(R2?=?0.45, p?<?0.05)。由于血管肌源性收缩在BPH中显著增加,利用该机制的靶标疗法并且参考病人特性,能够改善临床结果并且更好的预测病人响应。

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    2017-12-26 zhmscau
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    2017-09-07 gujh

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