1. Exercise-induced changes in miRNA expression in coronary artery disease
- Author
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Christine Schäfer, Martin Schönfelder, Silke Droese, Josef Niebauer, Edith E Müller, and Barbara Mayr
- Subjects
Male ,0301 basic medicine ,Angiogenesis ,Clinical Biochemistry ,Myocardial Infarction ,Coronary Artery Disease ,Disease ,030204 cardiovascular system & hematology ,medicine.disease_cause ,Bioinformatics ,Sudden cardiac death ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,microRNA ,Gene expression ,medicine ,Humans ,Myocardial infarction ,business.industry ,Biochemistry (medical) ,General Medicine ,medicine.disease ,MicroRNAs ,030104 developmental biology ,Exercise Test ,Female ,business ,Biomarkers ,Oxidative stress - Abstract
Objectives Micro ribonucleic acids (miRNAs) are small non-coding RNA molecules that control gene expression by translational inhibition. Exercise has been shown to affect several miRNAs’ expression in healthy subjects, but this has not yet been studied in patients with coronary artery disease (CAD). Since exercise training confers beneficial long-term effects and may also trigger acute coronary events, it is of utmost interest to be able to identify those who are risk for untoward effects. Therefore, we set out to assess miRNA expression in response to maximal ergospirometry in patients with CAD. Methods Total RNA was extracted from blood drawn immediately before and 5 min after maximal cycle-ergospirometry (10 male and 10 female CAD patients). A qRT-PCR was performed for 187 target miRNAs associated with endothelial function/dysfunction, cardiovascular disease, myocardial infarction, and sudden cardiac death. Results In response to a maximal ergospirometry, 33 miRNAs significantly changed their expression levels. Of these miRNAs 16 were significantly differently expressed between gender. Using multi-variance analysis, nine miRNAs (let-7e-5p; miR-1; miR-19b-1-5p; miR-103a-3p; miR-148b-3p; miR-181b-5p; miR-188-5p; miR-423-5p; miR-874-3p) showed significantly different responses to maximal ergospirometry between genders. Conclusions We report for the first time that in patients with CAD, miRNA expression is amenable to maximal ergospirometry and that the extent of changes differs between genders. Affected by exercise and gender were miRNAs that are associated, among others, with pathways for glucose metabolism, oxidative stress, and angiogenesis. Future studies should assess whether disease-specific miRNA expression in response to maximal exercise might serve as a marker for patient outcome.
- Published
- 2021
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