Fig. 3

Activation of D1R alleviated Dex-induced inhibition of osteoblast differentiation in vitro. A Representative images showing ALP and ARS staining. Scale bar: 200 μm. B and C Quantitative analysis of ALP and ARS staining. n = 3 per group. NS: Not statistically significant, * p < 0.05, ** p < 0.01, vs. the control group. D Representative images of western blots probed with antibodies against ALP, OSX and Runx2. E–G Quantification of ALP, OSX and Runx2 protein levels. n = 3 per group. NS: Not statistically significant, * p < 0.05, ** p < 0.01, vs. the control group. H Representative images of western blots probed with antibodies against ALP, OSX and Runx2 in the overexpression experiment. I–K Quantification of ALP, OSX and Runx2 protein levels. n = 3 per group. NS: Not statistically significant, * p < 0.05, ** p < 0.01, vs. the control group