Skeletal and respiratory muscle dysfunctions in pulmonary arterial hypertension

Marianne Riou, Mégane Pizzimenti, Irina Enache, Anne Charloux, Mathieu Canuet, Emmanuel Andres, Samy Talha, Alain Meyer, Bernard Geny*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

27 Citations (Scopus)

Abstract

Pulmonary arterial hypertension (PAH) is a rare disease, which leads to the progressive loss and remodeling of the pulmonary vessels, right heart failure, and death. Different clinical presentations can be responsible for such a bad prognosis disease and the underlying mechanisms still need to be further examined. Importantly, skeletal and respiratory muscle abnormalities largely contribute to the decreased quality of life and exercise intolerance observed in patients with PAH. At the systemic level, impaired oxygen supply through reduced cardiac output and respiratory muscle dysfunctions, which potentially result in hypoxemia, is associated with altered muscles vascularization, inflammation, enhanced catabolic pathways, and impaired oxygen use through mitochondrial dysfunctions that are likely participate in PAH‐related myopathy. Sharing new insights into the pathological mechanisms of PAH might help stimulate specific research areas, improving the treatment and quality of life of PAH patients. Indeed, many of these muscular impairments are reversible, strongly supporting the development of effective preventive and/or therapeutic approaches, including mitochondrial protection and exercise training.

Original languageEnglish
Article number410
JournalJournal of Clinical Medicine
Volume9
Issue number2
DOIs
Publication statusPublished - Feb 2020
Externally publishedYes

Keywords

  • Catabolism
  • Exercise
  • Mitochondria
  • Oxygen supply
  • Pulmonary arterial hypertension
  • Respiratory muscles
  • Skeletal muscles

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