Document Detail


Physical exercise reverses glutamate uptake and oxidative stress effects of chronic homocysteine administration in the rat.
MedLine Citation:
PMID:  22244886     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The influence of physical exercise on the effects elicited by homocysteine on glutamate uptake and some parameters of oxidative stress, namely thiobarbituric acid-reactive substances, 2',7'-dichlorofluorescein (H(2)DCF) oxidation, as well as enzymatic antioxidant activities, superoxide dismutase, catalase and glutathione peroxidase in rat cerebral cortex were investigated. Wistar rats received subcutaneous administration of homocysteine or saline (control) from the 6th to 29th day of life. The physical exercise was performed from the 30th to 60th day of life; 12h after the last exercise session animals were sacrificed and the cerebral cortex was dissected out. It is shown that homocysteine reduces glutamate uptake and DCF levels, increases thiobarbituric acid-reactive substances and disrupts enzymatic antioxidant defenses in cerebral cortex. Physical activity prevented the homocysteine effects on glutamate uptake and on antioxidant enzymes activities; although the increase in thiobarbituric acid-reactive substances was only partially reversed by exercise. These findings allow us to suggest that physical exercise may have a protective role against homocysteine-induced oxidative imbalance and brain damage to the glutamatergic system.
Authors:
Maira J da Cunha; Aline A da Cunha; Andrea G K Ferreira; Fernanda R Machado; Felipe Schimitz; Daniela D Lima; Debora Delwing; Ben Hur M Mussulini; Susana Wofchuk; Carlos A Netto; Angela T S Wyse
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-9
Journal Detail:
Title:  International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience     Volume:  -     ISSN:  1873-474X     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8401784     Medline TA:  Int J Dev Neurosci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Ltd.
Affiliation:
Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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