Figure 3: Effects of nitrite and nitrate on MDA, SOD, and CAT levels in ipsilateral testis. (a) MDA values are expressed as micromoles of MDA per mg protein (b) SOD values are expressed as unit of SOD per mg protein. (c) CAT values are expressed as nmol l-1 per min per mg protein. Data are mean ± s.d. aP < 0.05 indicates significance compared to Group A, bP < 0.05 indicates significance compared to Group C, cP < 0.05 indicates significance compared to Group D testis. Group A: control; Group B: I/R injury; Group C: I/R + 0.12 nmol g-1 nitrite; Group D: I/R + 1.2 nmol g-1 nitrite; Group E: I/R + 12 nmol g-1 nitrite; Group F: I/R + 0.12 nmol g-1 nitrite + 0.01 μmol g-1 C-PTIO; Group G: I/R + 0.12 nmol g-1 nitrate. MDA: malondialdehyde; SOD: superoxide dismutase; CAT: catalase; I/R: ischemia/reperfusion; C-PTIO: 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide potassium salt; s.d.: standard deviation.