JACC:去肾脏交感神经可改善心衰患者心功能

2017-10-18 MedSci MedSci原创

心衰患者的交感神经持续兴奋可能造成心肌细胞损伤、心肌纤维化和左室功能不全。本研究的目的是为了评估肾脏神经射频消融(RF-RDN)对心衰患者的影响,并且对肾脏交感神经与利尿肽代谢相关性进行评估。本研究对自发性高血压大鼠(SHR)和正常血压大鼠(WKY)进行45min的冠脉结扎和再灌注,随访12周。再灌注后4周,对SHR和WKY进行RF-RDN或者假手术。相比于假手术组大鼠,射频消融组的大鼠左室射血分

心衰患者的交感神经持续兴奋可能造成心肌细胞损伤、心肌纤维化和左室功能不全。

本研究的目的是为了评估肾脏神经射频消融(RF-RDN)对心衰患者的影响,并且对肾脏交感神经与利尿肽代谢相关性进行评估。

本研究对自发性高血压大鼠(SHR)和正常血压大鼠(WKY)进行45min的冠脉结扎和再灌注,随访12周。再灌注后4周,对SHR和WKY进行RF-RDN或者假手术。相比于假手术组大鼠,射频消融组的大鼠左室射血分数要明显更高,经过12周的随访,两个品系的大鼠左室纤维化均降低,血管功能也有所提高。RF-RDN治疗能提高严重心衰大鼠的血管对血管舒张药的反应性和顺应性。与假手术组相比,射频消融组大鼠的左室功能提高伴随着循环中利尿肽水平的明显提高,进一步的功能实验证实这种提高是由RF-RDN治疗能明显抑制肾脏脑啡肽酶活性引起。

本研究揭示了肾脏神经参与具有心脏保护作用的利尿肽的降解,肾脏神经射频消融后可以降低肾脏脑啡肽酶的活性,提高循环的利尿肽水平,从而改善心衰患者的左室功能。

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    2018-06-13 hbwxf
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    2017-10-18 lovetcm

    看来还是有价值的

    0

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