Scavenging effects of tetramethylpyrazine on active oxygen free radicals.
Zhongguo Yao Li Xue Bao
; 15(3): 229-31, 1994 May.
Article
in En
| MEDLINE
| ID: mdl-7976377
ABSTRACT
The scavenging effects of tetramethylpyrazine (ligustrazine, Lig) isolated from Ligusticum wallichii Franch on active oxygen free radicals were studied using spin trapping technic and chemiluminescence methods. The scavenging rate of superoxide anion (O2-.) by Lig (25 mg.ml-1) was 100% in xanthine/xanthine oxidase (Xan/XO) system, and that of hydroxyl radical (OH-.) was 44% in Fenton's reaction. The scavenging rate of lipid peroxyl radical (LOO-.) by Lig (25 mg.ml-1) was 80% in peroxidizing microsome system. It is possible that Lig scavenged O2-. by catalyzing its spontaneous dismutation. The results showed that Lig had strong effects of scavenging cyotoxic oxygen free radicals (O2-., LOO-., OH-.).
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pyrazines
/
Free Radical Scavengers
Limits:
Animals
Language:
En
Journal:
Zhongguo Yao Li Xue Bao
Year:
1994
Document type:
Article
Affiliation country:
China