Table 3.

Effect of sildenafil against carbon tetrachloride (CCl₄) on oxidative markers in the liver homogenates of various gatherings of the experiment after 4 weeks of treatment (mean ± standard deviation), (n = 10).

	Control	Sildenafil	CCl4	Sildenafil+CCl4
MDA (nmol/mg protein)	6.329 ± 0.844c	7.149 ± 1.061c	31.198 ± 1.985a	14.831 ± 2.411b
GSH (µmol/mg protein)	20.905 ± 2.541a	19.076 ± 3.107a	4.652 ± 1.146c	13.613 ± 1.303b
CAT (unit/mg protein)	5.969 ± 0.673a	5.675 ± 0.877a	1.359 ± 0.475c	3.435 ± 0.642b

Means with different superscripts in the same row are significantly different at P < 0.05.