Exercise-modulated epigenetic markers and inflammatory response in COPD individuals: A pilot study
Ivy Reichert Vital da Silva1, Cintia Laura Pereira de Araujo2, Gilson Pires Dorneles3
1Programa de Pós Graduação em Biociências e Reabilitação do Centro Universitário Metodista-IPA, Porto Alegre, RS, Brazil.
Exercise impacts epigenetic signals in chronic obstructive pulmonary disease (COPD). Pulmonary rehabilitation with exercise significantly altered DNA methylation and reduced inflammatory markers like interleukin-6 (IL-6) and interleukin-8 (IL-8) in COPD patients.
Area of Science:
- Epigenetics
- Pulmonary Medicine
- Exercise Physiology
Background:
- Chronic obstructive pulmonary disease (COPD) is characterized by systemic inflammation.
- Exercise is a key component of pulmonary rehabilitation for COPD.
- The epigenetic mechanisms underlying exercise benefits in COPD are not fully understood.
Purpose of the Study:
- To investigate the effects of a supervised exercise program on epigenetic markers.
- To examine changes in systemic cytokine levels following exercise in COPD patients.
- To explore the relationship between epigenetic modifications and anti-inflammatory effects of exercise.
Main Methods:
- Ten COPD participants underwent 24 supervised exercise sessions (90 min, thrice-weekly).
- Blood samples were collected at baseline, after session 1, and before/after session 24.
- DNA methylation and histone acetylation levels were analyzed, alongside systemic cytokine concentrations (IL-6, TGF-β, IL-8).
Main Results:
- DNA hypomethylation was observed after the first exercise session.
- Global histone H4 acetylation remained unchanged throughout the study.
- Cytokine levels showed no significant change after the first session, but IL-6 increased and TGF-β decreased after 24 sessions.
- Basal levels of IL-6 and IL-8 were significantly reduced after 23 exercise sessions.
Conclusions:
- Exercise interventions in COPD patients induce significant epigenetic changes, specifically DNA hypomethylation.
- Supervised exercise training demonstrates anti-inflammatory effects in COPD by modulating cytokine profiles.
- Epigenetic machinery may play a crucial role in mediating the therapeutic benefits of exercise for COPD.
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