Prooxidant-anti-oxidant balance is not associated with extent of coronary artery disease.

OBJECTIVE: We have measured the pro-oxidant-antioxidant-balance (PAB) levels in patients with defined coronary artery disease (CAD) and compared them with concentrations in healthy subjects.

DESIGN AND METHODS: Based on angiography results, 400 patients with stable CAD were divided into CAD- and CAD+, this being further subcategorized into groups with single-, double- and triple-vessel disease (VD).

RESULTS: The mean PAB values in the healthy subjects, was significantly lower than for other groups (P<0.001). In CAD- patients, PAB levels were 123.2 ± 43.9, which was not statistically different compared to groups with SVD, 2VD and 3VD (P>0.05). In the CAD+ group, PAB values in 1VD, 2VD and 3VD were not significantly different among patients with SVD, 2VD and 3VD (P>0.05).

CONCLUSIONS: In conclusion, we found higher levels of oxidative stress in CAD+ patients compared to healthy subjects. The oxidation level was not related to measures of the extent of CAD such as number of stenosed vessels.