Effects of metformin on osteogenic differentiation of C3H10 cells induced by high glucose (A) Cell viability of C3H10 cells incubated with metformin for 24, 48, and 72 h (B) Effects of metformin on ALP activity in C3H10 cells induced by high glucose. Note: Vs. Control ∗P < 0.05, ∗∗P < 0.01, ∗∗∗P < 0.001; vs. OIM #P < 0.05, ##P < 0.01, ###P < 0.001; vs. OIM + GH △P < 0.05, △△P < 0.01, △△△P < 0.001. Values are presented as mean ± SD.