Echocardiographic assessment of the right heart in mice.

Echocardiographic assessment of the right heart in mice.
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DOI:
10.3791/50912
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发表时间:
2013-11-27
期刊:
Journal of visualized experiments : JoVE
影响因子:
--
通讯作者:
Hemnes A
Hemnes A
中科院分区:
其他
文献类型:
--
作者:
Brittain E;Penner NL;West J;Hemnes A

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肺动脉高压(PAH)的转基因和毒性模型被广泛用于研究PAH的病理生理和探索潜在的治疗方法。考虑到创建疾病动物模型所涉及的费用和时间,研究人员拥有准确评估疾病表型表达的工具至关重要。右心室功能障碍是肺动脉高压的主要表现。超声心动图是无创评估啮齿动物右心室功能的主要方法,其优点是可以清楚地转化为使用相同工具的人类。缺乏发表的多环芳烃小鼠模型超声心动图方案。在这篇文章中,我们描述了一种评估具有显性阴性BMPRII突变的PAH小鼠模型RV和肺血管功能的方案;然而,本方案适用于任何影响肺血管系统或右心的疾病。我们提供了详细的描述动物准备,图像采集和血流动力学计算的中风量,心输出量和肺动脉压的估计。
Transgenic and toxic models of pulmonary arterial hypertension (PAH) are widely used to study the pathophysiology of PAH and to investigate potential therapies. Given the expense and time involved in creating animal models of disease, it is critical that researchers have tools to accurately assess phenotypic expression of disease. Right ventricular dysfunction is the major manifestation of pulmonary hypertension. Echocardiography is the mainstay of the noninvasive assessment of right ventricular function in rodent models and has the advantage of clear translation to humans in whom the same tool is used. Published echocardiography protocols in murine models of PAH are lacking. In this article, we describe a protocol for assessing RV and pulmonary vascular function in a mouse model of PAH with a dominant negative BMPRII mutation; however, this protocol is applicable to any diseases affecting the pulmonary vasculature or right heart. We provide a detailed description of animal preparation, image acquisition and hemodynamic calculation of stroke volume, cardiac output and an estimate of pulmonary artery pressure.
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