Antioxidative and superoxide scavenging activities of retrochalcones in Glycyrrhiza inflata.
Bioorg Med Chem
; 6(3): 339-47, 1998 Mar.
Article
in En
| MEDLINE
| ID: mdl-9568287
ABSTRACT
Licochalcone A, B, C, D and echinatin, retrochalcones isolated from the roots of Glycyrrhiza inflata (licorice), along with an ordinary chalcone isoliquiritigenin, were assessed for their inhibitory activities on lipid peroxidation in various systems and radical scavenging activity. Among those tested, licochalcones B and D strongly inhibited superoxide anion production in the xanthine/xanthine oxidase system. These two compounds also showed potent scavenging activity on DPPH radical. Microsomal lipid peroxidation induced by Fe(III)-ADP/NAPDH was inhibited almost completely by 3 micrograms/ml of licochalcones B and D. Mitochondrial lipid peroxidation induced by Fe(III)-ADP/NADH was more sensitive to these retrochalcones; almost complete inhibition was observed at 10 micrograms/ml of all retrochalcones tested. Licochalcones B and D scavenged superoxide anion in microsome. Furthermore, these retrochalcones protected red cells against oxidative hemolysis. These phenolic compounds were shown to be effective to protect biological systems against various oxidative stresses.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Plants, Medicinal
/
Plant Extracts
/
Chalcone
/
Free Radical Scavengers
/
Superoxides
/
Glycyrrhiza
/
Antioxidants
Limits:
Animals
/
Humans
/
Male
Language:
En
Journal:
Bioorg Med Chem
Journal subject:
BIOQUIMICA
/
QUIMICA
Year:
1998
Document type:
Article
Affiliation country:
Japan