OPG exerts protective effects on cartilage catabolism.A. OPG/RANKL mRNA ratio in IL1-β stimulated bone explants cultured with estradiol at 0.01 µM (E-8) and 1 µM (E-6), and with pamidronate (PAM). The graph represents the mRNA ratio to controls in 3 different experiments. B. Effect of OPG blockade by a neutralizing antibody (OPG-ab) on ARGS374 sequences expression in supernatants of cartilage explants cultured with conditioned bone media. Image of a representative Western blot, and the graph shows the mean quantifications ± SEM of 4 different experiments. Quantification was done on the 50 kDa bands. *: p<0.05.
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