Stéphanie Sauvageau

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UNLABELLED Although local tissue activation of the endothelin (ET) system contributes to the development of pulmonary hypertension, the impact of isolated chronic plasma hyperendothelinemia on the pulmonary circulation is unknown. METHODS Mini-osmotic pumps were implanted in rats to deliver ET-1 during 7 or 28 days. After in vivo hemodynamics, the lungs(More)
BACKGROUND Roles of endothelin (ET) receptors (R) and of the endothelium on ET-1-induced pulmonary vasoreactivity are subjects of debate. This stems from endothelial ET(B)-R that can release both vasodilators and vasoconstrictors. The aim of this study was to evaluate the roles of the endothelium and of ET-Rs on ET-1-induced pulmonary vasoreactivity. (More)
BACKGROUND AND PURPOSE The endothelin (ET) system is activated in pulmonary arterial hypertension (PAH). The therapeutic value of pharmacological blockade of ET receptors has been demonstrated in various animal models and led to the current approval and continued development of these drugs for the therapy of human PAH. However, we currently incompletely(More)
Endothelin (ET) levels are elevated in congestive heart failure secondary to myocardial infarction (MI) and correlate well with the severity of pulmonary hypertension (PH), suggesting that the ET peptide could contribute to the pathophysiology of venous PH. Alterations of pulmonary vasoreactivity to ET after MI and the respective roles of the ET(A) and(More)
BACKGROUND Studies have suggested some benefit of 3-hydroxy-3-methyl-glutaryl-CoA reductase inhibitors in congestive heart failure (CHF), although the mechanisms remain uncertain. We hypothesized that statins could improve pulmonary hypertension and right ventricular function in ischemic CHF by reducing lung remodeling. METHODS AND RESULTS Two weeks after(More)
Blockade of the endothelin (ET) system is beneficial in pulmonary arterial hypertension (PAH). The contribution of ET-3 and its interactions with ET receptors have never been evaluated in the monocrotaline (MCT)-induced model of PAH. Vasoreactivity of pulmonary arteries was investigated; ET-3 localization was determined by confocal imaging and gene(More)
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