Abstract
Objectives: Cardiac surgeries initiate oxidative stress, increasing organ dysfunction development and mortality. The present study investigated the superoxide dismutase (SOD) activity, as an antioxidant enzyme, in patients undergoing coronary artery bypass (CABG) and heart valve replacement surgeries. Methods: A prospective study was performed on patients with proven coronary artery disease (CAD) or valvular heart disease (VHD) candidates for on- or off-pump CABG and valve replacement surgery. Serum SOD activity was measured preoperatively, at 24 h postoperatively, and at the time of discharge. In addition, echocardiography was performed before surgery and at discharge. Results: A total of 48, 51, and 47 patients were enrolled in the on-pump, off-pump CABG, and valve replacement groups, respectively. Baseline serum SOD activity showed no significant association with BMI, age, and blood pressure in either CAD or VHD patients. The SOD values decreased at the 24 h postoperative time and then increased at the time of discharge in all groups, except for a slight decrease in the on-pump group. The changes in serum SOD values were not significantly different for the three surgical groups. Conclusions: The serum SOD activities fell significantly after CABG and valve replacement surgery. Further investigation is emphasized for the role of SOD in oxidative stress after cardiac surgery.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 365-370 |
| Number of pages | 6 |
| Journal | Journal of Basic and Clinical Physiology and Pharmacology |
| Volume | 34 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 1 2023 |
Funding
Research funding: This study was financially supported by grant Number: 920908 from Mashhad University of Medical Sciences.
Keywords
- antioxidant
- coronary artery disease
- oxidative stress
- superoxide dismutase
- valvular heart disease
ASJC Scopus subject areas
- Drug Discovery
- Physiology
- Pharmacology