Table 3.

Morphometric analysis in the studied groups

Group parameters	Control	GEN-treated	GEN + NaHS–treated	GEN + NaHS + ZnPP–treated
The mean color area percentage of PAS	5.06 ± 2.44	0.88 ± 0.28 a	3.33 ± 0.78 ab	2.28 ± 0.68 ab
The mean optical density of iNOS immunostaining	00.00 ± 00.00	98.09 ± 2.57 a	72.51 ± 2.65 abc	80.19 ± 2.56 abc
The mean optical density of eNOS immunostaining	92.08 ± 2.56	60.51 ± 6.12 a	87.02 ± 4.48 ab	71.54 ± 2.64 abc

Data represent mean ± SEM of 8 rats

GEN gentamicin, NaHS sodium hydrosulfide, ZnPP zinc protoporphyrin IX, PAS periodic acid Schiff, iNOS inducible nitric oxide synthase, eNOS endothelial nitric oxide synthase

^aSignificantly different from the control group

^bSignificantly different from the GEN-treated group

^cSignificantly different from the GEN + NaHS–treated group (P ˂ 0.05)