A: Representative Western blots for the expression analyses of OPG, PTH and vimentin. β-actin was used as the loading control. (OPG: osteoprotegerin. PTH: parathyroid hormone). B: The OPG, PTH and vimentin protein levels relative to β-actin protein levels were assessed by densitometric analysis, and expressed in the ME group relative to the same three proteins in the control group. (*The level in ME animals was significantly higher than the respective controls, P < 0.01).