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Table 2

Effects of GAE upon ROS and GSH levels, and GPX and catalase activities. NGF differentiated-PC12 cells were pre-treated with GAE at 0.25%, 0.5% or 1%, and followed by using H2O2 to induce cell injury. Normal group had no GAE or H2O2. Control group had no GAE, but with H2O2. Data are mean ± sd (n = 7). a-eValues in a column without a common letter differ, P < 0.05.

ROS RFU/mg protein GSH ng/mg protein GPX U/mg protein catalase U/mg protein
 Normal 0.14 ± 0.06a 90 ± 5d 66 ± 4d 2.52 ± 0.19e
 Control 2.36 ± 0.13e 39 ± 4a 38 ± 2a 0.97 ± 0.08a
GAE, 0.25 2.00 ± 0.05d 49 ± 3b 45 ± 3b 1.27 ± 0.11b
 GAE, 0.5 1.58 ± 0.1c 62 ± 2c 52 ± 4c 1.58 ± 0.12c
 GAE, 1 1.17 ± 0.09b 66 ± 3c 55 ± 3c 1.89 ± 0.07d