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Altered expression of micro-RNA 199a and increased levels of cardiac SIRT1 protein are associated with the occurrence of atrial fibrillation after coronary artery bypass graft surgery.
- Source :
-
Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology [Cardiovasc Pathol] 2016 May-Jun; Vol. 25 (3), pp. 232-236. Date of Electronic Publication: 2016 Feb 12. - Publication Year :
- 2016
-
Abstract
- Background: Postoperative atrial fibrillation (POAF) is a potentially life-threatening complication after coronary artery bypass graft (CABG) surgery. The expression of the cardioprotective SIRT1 protein with its antioxidant activity is increased in cardiac tissue of patients suffering from POAF. So far, information is lacking about the relationship between SIRT1 regulating micro RNAs (miRs), SIRT1 protein and the occurrence of POAF.<br />Methods: A total of 63 patients undergoing CABG were recruited, and biopsies were obtained from the right atrial appendage during cannulation. Postoperative, all patients were rhythm-monitored until discharge and randomized to POAF (n=20) or sinus rhythm (n=43). The expression of the micro RNAs miR-199a and miR-195 was quantified by real-time PCR. SIRT1 protein was detected by western blot analysis.<br />Results: The relative expression of miR-199a in the POAF group was significantly decreased compared to the control group (0.77±0.27 vs. 1.11±0.69, P=.022) Accordingly, SIRT 1 protein was significantly induced in tissue probes of patients with POAF (P<.001).<br />Conclusion: Altered expression of the SIRT1 protein regulating miR-199a in human atrial tissue was found to be related to the occurrence of POAF, indicating its usefulness as a biomarker for cardiac surgery management.<br /> (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Subjects :
- Aged
Atrial Fibrillation metabolism
Biomarkers analysis
Blotting, Western
Female
Humans
Male
MicroRNAs analysis
Middle Aged
Myocardium metabolism
Real-Time Polymerase Chain Reaction
Sirtuin 1 analysis
Atrial Fibrillation etiology
Coronary Artery Bypass adverse effects
MicroRNAs biosynthesis
Postoperative Complications metabolism
Sirtuin 1 biosynthesis
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1336
- Volume :
- 25
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology
- Publication Type :
- Academic Journal
- Accession number :
- 26952538
- Full Text :
- https://doi.org/10.1016/j.carpath.2016.02.002