Carbon monoxide reverses established pulmonary hypertension.

Carbon monoxide reverses established pulmonary hypertension.
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DOI:
10.1084/jem.20052267
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发表时间:
2006-09-04
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Otterbein LE
Otterbein LE
中科院分区:
其他
文献类型:
--
作者:
Zuckerbraun BS;Chin BY;Wegiel B;Billiar TR;Czsimadia E;Rao J;Shimoda L;Ifedigbo E;Kanno S;Otterbein LE

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肺动脉高压(PAH)是一种无法治愈的疾病,其特征是肺血管阻力进行性增加,导致右心衰竭。一氧化碳 (CO) 已成为一种有效的保护性稳态分子,预防性施用时可防止血管疾病的发生。本文提供的数据表明,CO 也可以起到治疗作用(即,在病理学建立后开始暴露于 CO)。在三种 PAH 啮齿动物模型中,每天接触 CO 1 小时可逆转已形成的 PAH 和右心室肥大,使右心室和肺动脉压力以及肺血管结构恢复至接近正常。 CO 逆转 PAH 的能力需要功能性内皮一氧化氮合酶 (eNOS/NOS3) 和 NO 生成,与野生型小鼠相比,CO 无法逆转 eNOS 缺陷 (nos3−/−) 小鼠中慢性缺氧诱导的 PAH。 CO的恢复功能与血管平滑肌细胞凋亡的同时增加和细胞增殖的减少有关,这部分是由肥大血管中的内皮细胞调节的。总之,这些数据表明,CO 可以逆转依赖于 NO 生成的已形成的 PAH,支持临床上使用 CO 治疗肺动脉高压。
Pulmonary arterial hypertension (PAH) is an incurable disease characterized by a progressive increase in pulmonary vascular resistance leading to right heart failure. Carbon monoxide (CO) has emerged as a potently protective, homeostatic molecule that prevents the development of vascular disorders when administered prophylactically. The data presented in this paper demonstrate that CO can also act as a therapeutic (i.e., where exposure to CO is initiated after pathology is established). In three rodent models of PAH, a 1 hour/day exposure to CO reverses established PAH and right ventricular hypertrophy, restoring right ventricular and pulmonary arterial pressures, as well as the pulmonary vascular architecture, to near normal. The ability of CO to reverse PAH requires functional endothelial nitric oxide synthase (eNOS/NOS3) and NO generation, as indicated by the inability of CO to reverse chronic hypoxia-induced PAH in eNOS-deficient (nos3−/−) mice versus wild-type mice. The restorative function of CO was associated with a simultaneous increase in apoptosis and decrease in cellular proliferation of vascular smooth muscle cells, which was regulated in part by the endothelial cells in the hypertrophied vessels. In conclusion, these data demonstrate that CO reverses established PAH dependent on NO generation supporting the use of CO clinically to treat pulmonary hypertension.
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