Effect of DL-alpha-lipoic acid on the status of lipid peroxidation and antioxidant enzymes in various brain regions of aged rats.

Abstract:

:The effect of DL-alpha-lipoic acid on lipid peroxidation and antioxidant enzymes were evaluated in various brain regions of young and aged rats. Lipoate contents of discrete brain regions were also measured. In aged rats, the activities of superoxide dismutase, glutathione peroxidase, glutathione reductase and glucose-6-phosphate dehydrogenase were low whereas thiobarbituric acid reactive substances were found to be high. Catalase activity in various brain regions was little altered in aged rats. Lipoic acid an antioxidant was administered intraperitoneally (100mg/kg body weight per day) for 7 and 14 days. Lipoate administered aged rats showed a duration dependent reduction in the level of lipid peroxidation and elevation in the activities of antioxidant enzymes. There was a rise in the level of lipoate in aged rats after supplementation of lipoate in all the brain regions examined. From our results we conclude that lipoate supplementation had a beneficial effect in both preventing and reversing abnormalities in ageing brain. This beneficial effect was associated with normalization of lipid peroxidation and partial restoration in the activities of various enzymatic antioxidants suggesting that lipoate supplementation could improve brain antioxidant functions in the elderly.

journal_name

Exp Gerontol

journal_title

Experimental gerontology

authors

Arivazhagan P,Shila S,Kumaran S,Panneerselvam C

doi

10.1016/s0531-5565(02)00015-3

keywords:

subject

Has Abstract

pub_date

2002-06-01 00:00:00

pages

803-11

issue

6

eissn

0531-5565

issn

1873-6815

pii

S0531556502000153

journal_volume

37

pub_type

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