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Updated: May 16, 2026

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Published on: May 11, 2015
Pathways in pulmonary arterial hypertension: the future is here
Olivier Sitbon1, Nicholasw Morrell
1Université Paris-Sud, Hôpital de Bicêtre, Le Kremlin-Bicêtre, France.
Newer treatments targeting key pathways offer improved outcomes for pulmonary arterial hypertension (PAH). These advancements in endothelin, nitric oxide, and prostacyclin pathways hold promise for better patient prognosis.
Area of Science:
- Cardiovascular Medicine
- Pulmonology
- Pharmacology
Background:
- Pulmonary arterial hypertension (PAH) pathogenesis involves endothelin, nitric oxide, and prostacyclin pathways.
- Current PAH therapies target these established mechanistic pathways.
- Understanding PAH progression drives novel therapeutic development.
Purpose of the Study:
- To highlight novel therapeutic options for pulmonary arterial hypertension (PAH).
- To discuss the impact of new compounds on PAH management.
- To explore the potential of new treatments to improve patient prognosis.
Main Methods:
- Review of current literature on PAH pathogenesis and treatment.
- Analysis of novel compounds targeting endothelin, nitric oxide, and prostacyclin pathways.
- Discussion of clinical implications and future directions.
Main Results:
- Macitentan, riociguat, and selexipag represent new therapeutic agents.
- These drugs target the endothelin, nitric oxide, and prostacyclin pathways, respectively.
- These novel therapies show potential for improved PAH patient outcomes.
Conclusions:
- Advancements in understanding PAH pathogenesis have led to new treatments.
- Novel agents targeting key pathways offer improved therapeutic options.
- These developments may significantly enhance the prognosis for patients with PAH.
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