mRNA expression of β-catenin and sclerostin after 4 weeks loading in wildtype and Panx1−/− mice. q-PCR analysis of (A) β-catenin (Ctnnb1) and (B) sclerostin (Sost) mRNA expression in loaded wildtype, loaded Panx1−/−, and non-loaded Panx1−/− relative to age-matched non-loaded wildtype, and loaded Panx1−/− relative to age-matched non-loaded Panx1−/−. The delta-delta CT method was used for data analysis, where the value obtained for each gene of interest is first normalized to the reference gene (18S rRNA gene) and then to either age-matched non-loaded wildtype or age-matched non-loaded Panx1−/−. All data are presented as mean ± SD, n = 5; **P < 0.01, ***P < 0.001. P values were obtained using either one-way ANOVA followed by Tukey’s multiple comparison test or unpaired t-test followed by Mann-Whitney test.