Non-canonical Wnt pathway in the Sfrp-deficient obstructed kidneys.
A, detection of phospho- and total c-Jun, phospho- and total JNK, phospho- and total p38, and phospho- and total Ca2+/calmodulin-dependent kinase II (CaMKII) by Western blotting of the UUO kidneys. Actin was evaluated as an internal control. B, immunohistochemical analyses of mouse kidney sections with antibodies against phospho- and total c-Jun in the sham and UUO kidneys at 7 days after the surgery. C and D, number of TUNEL-positive cells in the obstructed kidneys at 7 days after UUO. C, section of the sham and UUO kidneys in Sfrp+/+ and Sfrp−/− mice were subjected to TUNEL staining. D, graph shows analysis of the percentage of TUNEL-positive cells in the UUO kidneys. Scale bars, 100 μm. *, p < 0.05.