Primary study of leptin and human hepatocellular carcinoma in vitro

Table 1 Effect of leptin on proliferation of HepG2

Concentration (ng/mL)	A
	24 h	48 hd	72 hd
0	0.29 ± 0.01	0.34 ± 0.01	0.37 ± 0.01
50b	0.34 ± 0.02	0.42 ± 0.01	0.54 ± 0.02
100b	0.41 ± 0.03	0.53 ± 0.05	0.62 ± 0.02
200b	0.46 ± 0.04	0.63 ± 0.01	0.73 ± 0.03

^bP < 0.01 vs group of 0 ng/mL leptin;

^dP < 0.01 vs group of incubation 24 h.