Abstract:
Lifestyle modification (LM) programs are intended to stabilize or promote the remission of coronary artery disease (CAD). The purpose of this study was to examine the effects of LM program on oxidative stress marker in CAD patients and study on an in vitro effect of sera obtained from the LM-intervened patients on endothelial cells. A total of 30 patients were recruited and randomized into two group, experimental group (n=15) and usual care control group (n=15) and were followed for 12 months. Levels of lipid profiles, oxidized LDL and protein carbonyl were determined in the collected blood specimens from patients at baseline, 6 months and 12 months. Using patient sera and human coronary artery endothelial cells (HCAECs) culture, we measured cell viability by MTT colorimetric assay. After 6 months, serum lipid (cholesterol and triglyceride) levels were significantly decreased in LM group but they did not improve after 12 months of intervention. After 6 months of intervention, oxidized LDL and protein carbonyl levels significantly decrease in LM group but no significant changed at 12 months. In vitro, MTT assay indicated that HCAEC cell viability increased by sera from patients in experimental group after intervention. Fluorometric detection of hydrogen peroxide production significantly decreased after 6 months of intervention in LM group whereas significantly increased in UC group but no significant changed at 12 months in both groups. These findings indicate that lifestyle modification program decreases oxidative stress and increases endothelial cell viability in the patients with CAD. It is strongly recommended as an efficient strategy to decrease the risk of cardiovascular development