. 2017 May 8;42(1):54–67. doi: 10.5114/ceji.2017.67318

Table 4.

The amount of glutathione peroxidase activity in mice exposed to SiO₂, TiO₂, and ZrO₂ Ps (mg/kg b.w.).

Treatment^*	Glutathione peroxidase activity (U/mg tissues/min)
Treatment^*	100^*	200^*	400^*
Control	5.5 ±0.02^a	5.4 ±0.03^a	5.7 ±0.01^a
Cyclophosphamide	1.7 ±0.05^b	1.7 ±0.04^b	1.6 ±0.05^c
SiO₂	5.4 ±0.04^a	5.1 ±0.05^a	4.9 ±0.03^a
TiO₂	5.0 ±0.03^a	4.8 ±0.04^a	2.7 ±0.04^b
ZrO₂	5.2 ±0.03^a	5.1 ±0.04^a	4.4 ±0.03^ab
SiO₂ : TiO₂ (1 : 1)	5.2 ±0.04^a	4.8 ±0.03^a	2.9 ±0.02^b
SiO₂ : TiO₂ (1 : 2)	4.9 ±0.02^a	4.7 ±0.05^a	2.6 ±0.03^b
SiO₂ : TiO₂ (1 : 3)	4.8 ±0.05^a	4.5 ±0.06^a	2.3 ±0.02^b
SiO₂ : ZrO₂ (1 : 1)	5.2 ±0.05^a	5.1 ±0.06^a	4.2 ±0.04^ab
SiO₂ : ZrO₂ (1 : 2)	5.1 ±0.06^a	4.9 ±0.04^a	4.1 ±0.05^ab
SiO₂ : ZrO₂ (1 : 3)	5.0 ±0.04^a	4.8 ±0.06^a	4.0 ±0.02^ab

Each treatment had an equivalent numbers of animals (n = 10)

^a,b,c

Mean values within tissue with unlike superscript letters were significantly different (p < 0.05, Scheffé-Test)

^a,b,ab

Mean values within tissue with similar superscript letters were not significant differences (p > 0.05)