Research Article

Budesonide and Calcitriol Synergistically Inhibit Airway Remodeling in Asthmatic Mice

Figure 3

Effect of budesonide (Bud) and calcitriol (Cal) on the expression of the TGFβ/Smad signaling pathway-related proteins and miR-21 in ovalbumin- (Ova-) treated mice. (a) The lung tissue of the mice was fixed, embedded, and sectioned for immunohistochemical staining (DAB stain, original magnification ×400). (b) The total protein was extracted from the lung tissue of mice for Western blot analysis. (c, d) The expression of pSmad2 and pSmad3 in the lung tissue of mice was determined by Western blot analysis, with GAPDH as an internal reference ( versus control group, versus Ova-treated group). (e) miR-21 expression was determined by qRT-PCR with U6 as an internal reference after total RNA was extracted from the lung tissue of mice ( versus Ova-treated group, versus Ova/Cal-treated group).
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