Skip to main content

Table 5 Relative mRNA level for oxidative stress-related proteins to β-actin

From: Role of Nrf2 in inflammatory response in lung of mice exposed to zinc oxide nanoparticles

  Amount of ZnO-NPs administered (μg)Simple regressionMultiple regression
Genotype01030Effect of ZnO-NPsInteraction of ZnO-NPs and Nrf2 deletionEffect of ZnO-NPsEffect of Nrf2 deletion
SOD1Wild type
Nrf2−/−
1.5 ± 0.4
1.02 ± 0.3
1.8 ± 0.7
1.5 ± 0.3*
2.3 ± 0.9
1.2 ± 0.3
0.025(p = 0.027)
0.0023 (p = 0.68)
−0.011
(p = 0.083)
0.014(p = 0.028)−0.31(p = 0.0003)
CATWild type
Nrf2−/−
2.4 ± 0.5
2.6 ± 0.7
1.9 ± 0.7
2.7 ± 1.0
3.2 ± 1.5(p = 0.042)
2.3 ± 0.8
0.030 (p = 0.063)
−0.011 (p = 0.45)
−0.02
(p = 0.06)
0.012 (p = 0.28)0.011 (p = 0.94)
GcLcWild type
Nrf2−/−
1.6 ± 0.5
1.3 ± 0.4
1.4 ± 0.4
1.6 ± 0.5
1.9 ± 0.9
1.1 ± 0.2
0.011(p = 0.25)
−0.011 (p = 0.14)
−0.011
(p = 0.082)
0.0016(p = 0.80)−0.17(p = 0.032)
GcLmWild type
Nrf2−/−
1.5 ± 0.6
1.3 ± 0.3
1.1 ± 0.3
1.3 ± 0.2
1.3 ± 0.5
1.0 ± 0.3
−0.0033 (p = 0.65)
− 0.0095 (p = 0.48)
−0.0031
(p = 0.50)
− 0.0061 (p = 0.18)−0.057(p = 0.32)
NQO1Wild type
Nrf2−/−
0.9 ± 0.5
0.7 ± 0.1
0.9 ± 0.8
0.9 ± 0.3
0.9 ± 0.8
0.6 ± 0.1
−0.00095 (p = 0.93)
− 0.0045 (p = 0.23)
−0.0018 (p = 0.77)− 0.0025 (p = 0.67)−0.064(p = 0.39)
GRWild type
Nrf2−/−
1.3 ± 0.7
2.1 ± 0.5
0.9 ± 0.3
1.8 ± 0.5
4.6 ± 6.7
1.7 ± 0.7
0.12(p = 0.040)
−0.011 (p = 0.24)
−0.067
(p = 0.043)
HO-1Wild type
Nrf2−/−
7.5 ± 3.0
5.8 ± 2.5
7.1 ± 2.3
3.8 ± 1.6
6.8 ± 1.9
4.2 ± 1.7
−0.023 (p = 0.53)
− 0.042 (p = 0.22)
0.0095 (p = 0.70)− 0.031 (p = 0.21)−1.25(p = 0.0002)
MT-1Wild type
Nrf2−/−
1.5 ± 0.9
1.9 ± 1.1
1.4 ± 0.6
2.2 ± 0.6
3.8 ± 2.5*
2.6 ± 0.9
0.081(p = 0.0017)
−0.0033 (p = 0.83)
−0.042
(p = 0.0063)
MT-2Wild type
Nrf2−/−
1.9 ± 0.7
3.7 ± 1.6
1.9 ± 0.8
3.8 ± 1.4
3.9 ± 2.0*
4.1 ± 2.5
0.072 (p = 0.001)
0.013(p = 0.66)
−0.029
(p = 0.097)
0.046 (p = 0.012)0.68(p = 0.0035)
  1. Mean ± SD. * p < 0.05compared to the corresponding genotype control by Dunnett’s multiple comparison following ANOVA. Simple regression analysis in each genotype and multiple regression analysis in a model with interaction was conducted. As the interaction was not significant for SOD1, CAT, GcLc, GcLm, NQO1, HO-1 or MT-2, multiple regression in a model without interaction was finally conducted to estimate effect of ZnO-NPs or Nrf2 deletion