Fig. 4

The effects of calcitriol (0.5 µg/kg) on Nrf2 signaling after TBI. a Representative images of Western blot staining for Keap1, cytoplasmic Nrf2, and nuclear Nrf2. b Statistical graphs of Keap1 protein expression and Nrf2 translocation. c, d Representative immunofluorescence images and statistical graphs of p62 and Keap1 co-expression (Bar = 50 µm). e, f Representative immunofluorescence images and statistical graphs of Nrf2 translocation (Bar = 50 µm). g The relative mRNA expression level of Nqo1. h The relative mRNA expression level of Gclc. i The relative mRNA expression level of HO1. Data are presented as means ± SEM (n = 5). *P < 0.05 and **P < 0.01 versus the indicated groups. (Sham: sham-operated group; TBI: TBI model group; Calcitriol: TBI + calcitriol treatment group)