Altered antioxidant enzyme activity with severity and comorbidities of chronic obstructive pulmonary disease (COPD) in South Indian population

Table 4 Coefficients of correlation values between erythrocyte anti-oxidation enzyme activities with FEV₁ (% predicted) in COPD patients

Study parameters	Correlation coefficients (r)*
Superoxide dismutase (U/mg protein)	-0.182*
Catalase (U/mg protein)	-0.263*
Glutathione s transferase (U/mg protein)	0.630**
Glutathione peroxidase (U/mg protein)	0.030
Glutathione reductase (U/mg protein)	-0.094
Total antioxidant status (μM Fe²⁺/1)	-0.183*

Significance of correlation between erythrocyte antioxidant enzyme activities with FEV₁ (% predicted). *p < 0.05, **p < 0.001, ‘r’ denotes Pearson correlation coefficient

ISSN: 2054-9040