Table 1.

Activities of GSH-Px, GST, CAT, and SOD in GH3 cells.

Group (ng/mL)	CAT activity (U/mg protein)	SOD (U/mL)	GSH-Px (U/mg protein)	MDA (μmol/mg protein)
0	0.407 ± 0.008	1.907 ± 0.224	150.262 ± 0.001	1.476 ± 0.023
300	0.949 ± 0.012∗	2.938 ± 0.426∗	134.592 ± 0.034∗	1.736 ± 0.032∗
600	1.129 ± 0.006∗	4.630 ± 0.075∗∗	85.149 ± 0.217∗∗	1.698 ± 0.038∗
1200	2.326 ± 0.005∗∗	5.798 ± 0.257∗∗	53.719 ± 0.421∗∗	1.777 ± 0.042∗

Note: CAT 1 U = the amount of enzyme that consumes 1 nmole H₂O₂/min. GST 1 U = the amount of enzyme that conjugates 1 μmole CDNB/min. GSH-Px 1 U = the amount of enzyme that converts 1 μM GSH to GSSG in the presence of H₂O₂/min. SOD 1 U = the amount of enzyme required for 50% inhibition of pyrogallol autooxidation. Data are shown as means ± SD (n = 3) from three separate experiments performed in triplicate. ^∗ indicates P values < 0.05, and ^∗∗ indicates P values < 0.01.