Fig 6. Real-time PCR quantification of VDR gene expression in 3T3-L1 cells (A): in the positive control treatment (DM) at 0, 6, and 12 h, and days 1, 2, 4, 6, 8, and 10. (B to I).

Cells were treated with DM in the presence or absence of 0.01, 0.1, 1, 10, and 100 nM 1, 25 - (OH)₂D₃ and EEF2 was used as endogenous control (∆Ct). Data were normalized to VDR gene expression of the positive control (DM) at the corresponding time point (∆∆Ct). (B) 6 h, (C) 12 h, (D) day 1, (E) day 2, (F) day 4 (G) day 6, (H) day 8 and (I) day 10. Data are means ± SE (n = 3). Different letters represent treatment effects that were significantly different (P < 0.05).