An ethanolic-aqueous extract of Curcuma longa decreases the susceptibility of liver microsomes and mitochondria to lipid peroxidation in atherosclerotic rabbits.
Biofactors
; 8(1-2): 51-7, 1998.
Article
em En
| MEDLINE
| ID: mdl-9699009
ABSTRACT
Atherosclerosis is characterized by oxidative damage which affects lipoproteins, the walls of blood vessels and subcellular membranes. This study evaluates the antioxidant capacity of a Curcuma longa extract on the lipid peroxidation of liver mitochondria and microsome membranes in atherosclerotic rabbits. Male rabbits fed a 3% (w/w) lard and 1.3% (w/w) cholesterol diet were randomly assigned to three groups. Two groups were treated with different dosages of a turmeric extract (A and B) and the third group (control) with a curcumin-free solution. Basal and in vitro 2,2'-azobis (2-amidinopropane) dihydrochloride (AAPH)-induced hydroperoxide and TBARS productions in liver mitochondria and microsomes were analyzed. Group A had the lowest concentration of mitochondrial hydroperoxides. In microsomes, the basal hydroperoxide levels were similar in all groups but, after the induction of oxidation, group C registered the highest value; TBARS production followed the same trend in mitochondria. These findings suggest that active compounds in curcuma extract may be protective in preventing lipoperoxidation of subcellular membranes in a dosage-dependent manner.
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Base de dados:
MEDLINE
Assunto principal:
Arteriosclerose
/
Microssomos Hepáticos
/
Mitocôndrias Hepáticas
/
Extratos Vegetais
/
Peroxidação de Lipídeos
Limite:
Animals
Idioma:
En
Ano de publicação:
1998
Tipo de documento:
Article