Pulmonary Artery Hypertension Model in Rats by Monocrotaline Administration
2018
: Pulmonary arterial hypertension (PAH) is a syndrome characterized by pulmonary vascular remodeling and vasoconstriction, leading to increased pulmonary vascular resistance, right ventricular pressure overload and, eventually, to right ventricular failure and premature death. Animal models have been an essential tool for understanding pulmonary hypertension pathophysiology and for the discovery and development of novel therapies.MCT-induced PAH in rats leads to a significant increase in RV pressure and pulmonary vascular remodeling, as well as greater RV hypertrophy. In this chapter, we describe protocols for inducing and assessing the monocrotaline (MCT) rat model, the most classical and widely used in vivo model of PAH. Using this protocol, rats reproducibly develop pulmonary hypertension with a mean pulmonary pressure of ~40 mmHg approximately 4 weeks after single MCT administration.
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