. 2014 Jul 8;9(7):e101572. doi: 10.1371/journal.pone.0101572

Table 5. The effects of silica nanoparticles on the oxidative stress of testicular tissue in mice (Mean ± S.E.).

Group	Malondialdehy (nmol/mg protein)	Ability of inhibiting hydroxylradical (U/mg protein)	Activity ocatalase (U/mg protein)	Activity of supperoxide dismutase (U/mg protein)	Activity of glutathione peroxidase (U/mg protein)
15days control	3.43±0.43	56.74±5.68	14.09±3.82	56.18±4.21	22.45±3.48
15days Nano-Sio₂	2.54±0.15	44.18±1.91^*	10.63±2.29	57.86±7.08	23.17±3.57
35days control	2.48±0.23	48.27±2.13	14.12±2.12	56.38±8.09	23.81±1.91
35days Nano-Sio₂	4.30±0.54^*	33.98±1.74^*	11.25±1.41	51.97±6.06	20.08±4.88
60days control	2.31±0.18	39.00±7.05	11.93±3.01	57.92±5.54	23.18±4.49
60days Nano-Sio₂	1.93±0.08	37.76±3.56	12.61±1.39	61.39±5.93	30.93±5.73^*

*Indicates significant difference compared to control group (P<0.05).