Reversal of multidrug resistance of hepatocellular carcinoma cells by metformin through inhibiting NF-κB gene transcription

Table 1 Absorbance values (n = 3, mean ± SD) of HepG2/adriamycin cells treated with different concentrations of metformin

Time (h)	0 (blank)	0.1 mmol/L	0.3 mmol/L	1 mmol/L	3 mmol/L	10 mmol/L
24	1.242 ± 0.03	1.233 ± 0.04	1.221 ± 0.02	1.195 ± 0.00	1.189 ± 0.02	1.101 ± 0.02a
48	1.744 ± 0.01	1.734 ± 0.02	1.718 ± 0.04	1.703 ± 0.03	1.583 ± 0.03a	1.483 ± 0.01a
72	1.692 ± 0.04	1.677 ± 0.01	1.650 ± 0.06	1.583 ± 0.06	1.420 ± 0.06a	1.300 ± 0.04a

^aP < 0.05 vs the blank group.