Figure 8.
Transfection with p38 siRNA attenuated the TGF-β1-induced expression of p38, p-p38 and connective tissue growth factor (CTGF). (A) The expression of p38 and p-p38 in cells following treatment with 3 ng/ml TGF-β1 for 6 h was detected by immunofluorescence staining. (B) The expression of CTGF was detected by western blot analysis. (C) The densitometeric values of results of western blot analysis. n=3, *P<0.05 vs. non-targeting negative control (NC siRNA); #P<0.05 vs. TGF-β1 + NC siRNA. These results have validated that the p38 pathway plays a critical role in TGF-β1-induced hypertrophy of the lumbar ligamentum flavum (LF).