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阜外医院张浩等提出肺动脉高压新思路:经胸肺动脉去神经治疗

2018-09-25 佚名 中国循环杂志

阜外医院张浩、黄源等就肺动脉高压的外科治疗探出了一步。


阜外医院张浩、黄源等就肺动脉高压的外科治疗探出了一步。
 
有研究显示,交感神经系统的激活可能是肺动脉高压患者肺血管重塑及右心室功能障碍的促进因素。那么,如果经胸去除肺动脉周围交感神经,能解决问题吗?
 
研究者通过注射野百合碱构建了肺动脉高压大鼠模型,并证实大鼠肺动脉主干周围结缔组织中存在大量交感神经纤维。
 
结果发现,经胸手术切除这些富含交感神经的结缔组织后,可降低野百合碱诱导的肺动脉高压大鼠的平均肺动脉压,减少肺小动脉中膜肥厚,并减轻其右心室肥厚程度。
 
研究者指出,这提示经胸肺动脉去神经支配术可以更加彻底地实现肺动脉去神经化的目的,加强了手术效果。而且该外科干预手段可避免导管射频消融对消融处肺动脉内皮的炎症性损伤。这为临床干预和治疗肺动脉高压提供了新的潜在方向。
 
不过研究者也指出,该研究一定程度模拟了临床上特发性肺动脉高压的模型,但该手术对于其它病因所致的肺动脉高压是否有效仍需进一步探索。
 
同时由于缺乏相关实验设备,未检测三组大鼠心排量和肺动脉阻力,从而没能全面反映各组大鼠的心功能状态和肺血管阻力。此外,这一外科手段对肺动脉高压大鼠的治疗作用,其具体分子机制还需进一步探索。
 
在这项研究中,研究者将 24 只健康雄性SD大鼠按 1:1:1比例随机分为对照组、假手术组及手术组。假手术组和手术组予一次性皮下注射野百合碱(60 mg/kg), 4 周后造模成功则对手术组行经胸肺动脉去神经支配术,假手术组仅开胸,术后 2 周后再采用右心导管测量各组大鼠相关参数。
 
原始出处:

黄源,刘一为,项理,等. 经胸肺动脉去神经支配术在肺动脉高压大鼠模型中的治疗作用. 中国循环杂志, 2018, 33: 616-620.

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    2019-05-28 晓辰
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    2018-09-25 明天jing

    肺动脉高压表面是罕见病,事实上临床上并不少见,治疗药物虽然有一些,但是整体仍然不理解,可能未来需要采用综合治疗措施。

    0

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