New Insights into the Implication of Mitochondrial Dysfunction in Tissue, Peripheral Blood Mononuclear Cells, and Platelets during Lung Diseases

• Main Authors: Marianne Riou, Abrar Alfatni, Anne-Laure Charles, Emmanuel Andrès, Cristina Pistea, Anne Charloux, Bernard Geny
• Format: Article
• Language: English
• Published: MDPI AG 2020-04-01
• Series: Journal of Clinical Medicine
• Subjects: lung diseases; mitochondria; blood; PBMCs; platelets; oxidative stress
• Online Access: https://www.mdpi.com/2077-0383/9/5/1253

Lung diseases such as chronic obstructive pulmonary disease, asthma, pulmonary arterial hypertension, or idiopathic pulmonary fibrosis are major causes of morbidity and mortality. Complex, their physiopathology is multifactorial and includes lung mitochondrial dysfunction and enhanced reactive oxygen species (ROS) release, which deserves increased attention. Further, and importantly, circulating blood cells (peripheral blood mononuclear cells-(PBMCs) and platelets) likely participate in these systemic diseases. This review presents the data published so far and shows that circulating blood cells mitochondrial oxidative capacity are likely to be reduced in chronic obstructive pulmonary disease (COPD), but enhanced in asthma and pulmonary arterial hypertension in a context of increased oxidative stress. Besides such PBMCs or platelets bioenergetics modifications, mitochondrial DNA (mtDNA) changes have also been observed in patients. These new insights open exciting challenges to determine their role as biomarkers or potential guide to a new therapeutic approach in lung diseases.