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BMC Med:PDE5抑制剂新用途,为你提供“贴心保护”

2014-10-24 JacquelineShawn 果壳

 BMC医学 10月19日公布了一项最新研究成果,研究发现,万艾可(伟哥)也许能够安全用于治疗心脏病。该研究表明,在不同心脏病病程中,长期每日服用伟哥都能起到保护心脏的作用,而且几乎没有副作用。[pdf free]万艾可的主要成分是磷酸二酯酶5抑制剂(phosphodiesterase-5 inhibitor,PDE5i),同时也是其他治疗勃起障碍常用药的主要成分。磷酸二酯酶5的作用是防

BMC医学 10月19日公布了一项最新研究成果,研究发现,万艾可(伟哥)也许能够安全用于治疗心脏病。该研究表明,在不同心脏病病程中,长期每日服用伟哥都能起到保护心脏的作用,而且几乎没有副作用。[pdf free]

万艾可的主要成分是磷酸二酯酶5抑制剂(phosphodiesterase-5 inhibitor,PDE5i),同时也是其他治疗勃起障碍常用药的主要成分。磷酸二酯酶5的作用是防止平滑肌组织舒张,而磷酸二酯酶抑制剂可以阻断这一作用。人们发现,心脏中同样存在磷酸二酯酶5,于是学者开始研究磷酸二酯酶5抑制剂能否治疗非泌尿系统疾病。尽管之前的研究得到了一些很有前途的结果,但是实验研究大多数是针对动物进行的,并且PDE5i的心脏保护作用仍然不明确。

罗马大学的科学家通过检索2004年1月到2014年5月之间发表的文献,对多个随机对照试验进行了荟萃分析(Meta分析),从而对PDE5i心脏保护作用的有效性进行验证,并确定人体是否对其有良好的耐受性以及药物的人体安全性。研究人员最终从MEDLINE、EMBASE、考科兰图书馆(Cochrane Library)和SCOPUS这4个数据库中筛选出24个匹配的试验用于分析。这些试验囊括了1662例病人,覆盖了多个种族,分别用PDE5i和安慰剂进行治疗。

在此项研究中,科学家首次对磷酸二酯酶5抑制剂对心脏大小形状的影响及其效果进行了平行分析。

左心室肥厚会导致左心室心肌增厚。分析结果显示,PDE5i能够防止左心室肥厚患者的心脏继续增大和发生形态改变。对于患有各种心脏疾病的患者,磷酸二酯酶5抑制剂也能够改善心脏功能,而且不会对患者的血压产生不良影响。

论文的第一作者安德列·伊西多(Andrea Isidori)说:“我们发现,对于一些心脏病患者来说,万艾可的主要成分是一种安全有效的治疗药物。这些发现非常令人鼓舞,科学家现在需要立刻对此进行大量的临床试验。”

研究得出的结论是,磷酸二酯酶5抑制剂用于心肌肥厚病人和早期心衰病人的治疗是合理的。但是,荟萃分析囊括的研究大多针对男性患者,因而研究人员认为,下一步应该针药物的性别特异性长期反应展开更大规模试验。

 
原始出处:
 
Giannetta E, Feola T, Gianfrilli D, Pofi R, Dall'Armi V, Badagliacca R, Barbagallo F, Lenzi A, Isidori AM1.Is chronic inhibition of phosphodiesterase type 5 cardioprotective and safe? A meta-analysis of randomized controlled trials.BMC Med. 2014 Oct 20;12(1):185. [pdf free]

 

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    2015-08-10 jklm09
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