TY - JOUR
T1 - Effects of Choto-san and its related constituents on endogenous antioxidant systems
AU - Mahakunakorn, Pramote
AU - Tohda, Michihisa
AU - Murakami, Yukihisa
AU - Watanabe, Hiroshi
AU - Matsumoto, Kinzo
PY - 2005/1
Y1 - 2005/1
N2 - We previously reported that Choto-san acts as an antioxidant and cytoprotective agents against H2O2-induced oxidative damage in NG108-15 cells, and the effect is due at least partly to the phenolic compounds. To further investigate the detail mechanisms of this cytoprotection effects of Choto-san and related compounds on enzyme activities of antioxidant systems were examined. Choto-san (5-100 μg/ml) and Chotoko (5-100 mg/ml) stimulated the activity of superoxide dismutase (SOD), catalase and glutathione peroxidase (GPX). These also increased the level of glutathione. Although Choto-san without Chotoko (w/o CKO) did not show the effects on SOD and catalase, GPX activity and glutathion content also, but weakly, stimulated by w/o CKO. The effects of phenolic compounds, epicatechin, caffeic acid and quercetin were also investigated. Epicatechin stimulated catalase, GPX and glutathion content, but not SOD. On the other hand, caffeic acid stimulated SOD activity but had no effects on others. Quercetin stimulated all, although intensities were different among. These results suggest that simultaneous induction of cellular antioxidant defense systems by Choto-sam and its related constituents may be an important mechanisms underlying the protective effects of Choto-san on ischemia-induced neuronal cells injury, and the characteristics of the stimulative effects of phenolic compounds were depend on enzymes.
AB - We previously reported that Choto-san acts as an antioxidant and cytoprotective agents against H2O2-induced oxidative damage in NG108-15 cells, and the effect is due at least partly to the phenolic compounds. To further investigate the detail mechanisms of this cytoprotection effects of Choto-san and related compounds on enzyme activities of antioxidant systems were examined. Choto-san (5-100 μg/ml) and Chotoko (5-100 mg/ml) stimulated the activity of superoxide dismutase (SOD), catalase and glutathione peroxidase (GPX). These also increased the level of glutathione. Although Choto-san without Chotoko (w/o CKO) did not show the effects on SOD and catalase, GPX activity and glutathion content also, but weakly, stimulated by w/o CKO. The effects of phenolic compounds, epicatechin, caffeic acid and quercetin were also investigated. Epicatechin stimulated catalase, GPX and glutathion content, but not SOD. On the other hand, caffeic acid stimulated SOD activity but had no effects on others. Quercetin stimulated all, although intensities were different among. These results suggest that simultaneous induction of cellular antioxidant defense systems by Choto-sam and its related constituents may be an important mechanisms underlying the protective effects of Choto-san on ischemia-induced neuronal cells injury, and the characteristics of the stimulative effects of phenolic compounds were depend on enzymes.
KW - Catalase
KW - Choto-san
KW - Glutathione
KW - Glutathione peroxidase
KW - NG108-15 cell
KW - Superoxide dismutase
UR - http://www.scopus.com/inward/record.url?scp=18444377548&partnerID=8YFLogxK
U2 - 10.1248/bpb.28.53
DO - 10.1248/bpb.28.53
M3 - 学術論文
C2 - 15635163
AN - SCOPUS:18444377548
SN - 0918-6158
VL - 28
SP - 53
EP - 57
JO - Biological and Pharmaceutical Bulletin
JF - Biological and Pharmaceutical Bulletin
IS - 1
ER -