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Updated: Jan 22, 2026
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Methylated DNA Immunoprecipitation
Published on: January 2, 2009
24.1K
Effects of Physical Exercise on Endothelial Function and DNA Methylation
Luca Ferrari1, Marco Vicenzi1,2, Letizia Tarantini1
1EPIGET, Epidemiology, Epigenetics and Toxicology Lab, Department of Clinical Sciences and Community Health, University of Milan, via san Barnaba 8, 20122 Milan, Italy.
Summary
Aerobic exercise training improved cardiorespiratory fitness and reduced blood pressure. This study found that physical activity increased DNA methylation in repetitive elements and specific genes, suggesting a role in blood pressure regulation.
Area of Science:
- Cardiovascular Physiology
- Epigenetics
- Exercise Science
Background:
- Essential hypertension is a major global health concern and a leading preventable cause of death.
- Physical training is recognized for its blood pressure-lowering effects in both hypertensive and healthy individuals.
- Emerging research indicates DNA methylation plays a role in vascular function and phenotypic changes due to environmental factors.
Purpose of the Study:
- To investigate the impact of a three-month aerobic exercise intervention on DNA methylation patterns.
- To examine the relationship between changes in DNA methylation and improvements in cardiorespiratory fitness and blood pressure.
Main Methods:
- DNA methylation analysis (bisulfite-PCR and pyrosequencing) was performed on peripheral blood leukocytes from 68 volunteers before and after the exercise intervention.
- Measurements included oxygen consumption at peak exercise (VO2peak), systolic blood pressure, and diastolic blood pressure.
- Analysis focused on repetitive elements (ALU, LINE-1) and specific genes (EDN1, NOS2, TNF).
Main Results:
- The exercise program significantly increased VO2peak and decreased resting diastolic blood pressure.
- Methylation levels of ALU and LINE-1 repetitive elements, as well as EDN1, NOS2, and TNF genes, were elevated post-intervention.
- Positive associations were observed between VO2peak and methylation of ALU, EDN1, NOS2, and TNF.
- Inverse associations were found between resting blood pressure and methylation of LINE-1, EDN1, and NOS2.
Conclusions:
- Continuative aerobic physical training can induce significant changes in DNA methylation patterns.
- These exercise-induced epigenetic modifications, particularly in repetitive elements and specific genes, may contribute to the observed reduction in systemic blood pressure.
- DNA methylation emerges as a potential mechanism underlying the cardiovascular benefits of regular physical activity.
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