Endothelial-Derived Extracellular Vesicles During Exercise in COPD Patients.
Samuel C Okpechi1,2,3, Dorota Wyczechowska1, Bennett DeBoisblanc4,5
1Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
The Clinical Respiratory Journal
|December 7, 2025
Summary
Chronic obstructive pulmonary disease (COPD) patient endothelial cell-derived extracellular vesicles (eEVs) profiles vary by smoking and exacerbation history. Exercise increased certain eEVs, but iloprost did not impact eEV levels in COPD patients.
Area of Science:
- Pulmonary vascular research
- Endothelial cell biology
- Extracellular vesicle analysis
Background:
- Pulmonary vasculature in COPD lacks targeted treatments.
- Endothelial cell (EC) abnormalities in COPD require further study for drug development.
Purpose of the Study:
- Investigate exercise and iloprost effects on EC-derived EVs (eEVs) in COPD.
- Characterize eEV profiles in relation to COPD patient history.
Main Methods:
- Randomized, placebo-controlled crossover trial of iloprost in 15 moderate-severe COPD patients.
- Analysis of extracellular vesicles derived from endothelial cells (eEVs).
Main Results:
- eEV profiles differed between active smokers (inflammatory) and exacerbation-prone COPD patients (apoptosis-derived).
- Iloprost showed no significant effect on eEV levels.
- Maximal exercise led to a significant increase in CD144+ and CD31+/CD144+ EVs 1 hour post-exercise.
Conclusions:
- COPD patient eEV profiles are influenced by smoking status and exacerbation history.
- Iloprost treatment did not alter eEV levels.
- Maximal exercise may induce a delayed increase in specific eEV subsets, potentially via shear stress mechanisms.
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