title: Antioxidant effect of organic purple grape juice on exhaustive exercise.
abstract: This study aimed to assess the potential protective effect of organic purple grape juice (PGJ) on oxidative stress produced by an exhaustive exercise bout in rats. To test this hypothesis, rats were acutely treated with organic PGJ (Vitis labrusca) and subsequently submitted to an exhaustive exercise bout. Parameters of oxidative stress, such as thiobarbituric acid reactive species (TBARS) levels, 2',7',-dichlorofluorescein diacetate (DCFH-DA) oxidation, and nonprotein sulfhydryl levels (NP-SH) in the brain, skeletal muscle, and blood, were evaluated. Enzyme activity of Na(+),K(+)-ATPase, Ca(2+)-ATPase, and δ-aminolevulinate dehydratase (δ-ALA-D) in the brain, skeletal muscle, and blood were also assayed. Statistical analysis showed that the exhaustive exercise bout increased TBARS levels and DCFH-DA oxidation, and decreased NP-SH levels in rat tissue. Ca(2+)-ATPase activity was increased in groups exposed to both exercise and PGJ treatment. The results indicate that organic PGJ intake was able to protect against the oxidative damage caused by an exhaustive exercise bout in different rat tissues.
authors.affiliation: a Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil.
authors.forename: Cristiane L
authors.initials: CL
authors.lastname: Dalla Corte
authors.forename: Nélson R
authors.initials: NR
authors.lastname: de Carvalho
authors.forename: Guilherme P
authors.initials: GP
authors.lastname: Amaral
authors.forename: Gustavo O
authors.initials: GO
authors.lastname: Puntel
authors.forename: Luiz Fernando A
authors.initials: LF
authors.lastname: Silva
authors.forename: Leandro T
authors.initials: LT
authors.lastname: Retamoso
authors.forename: Luiz Fernando F
authors.initials: LF
authors.lastname: Royes
authors.forename: Guilherme B
authors.initials: GB
authors.lastname: Bresciani
authors.forename: Ivana B M
authors.initials: IB
authors.lastname: da Cruz
authors.forename: João B T
authors.initials: JB
authors.lastname: Rocha
authors.forename: Juan Pablo
authors.initials: JP
authors.lastname: Barrio Lera
authors.forename: Félix A A
authors.initials: FA
authors.lastname: Soares
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology; D018384:Oxidative Stress; D017208:Rats, Wistar; D017392:Thiobarbituric Acid Reactive Substances; D027843:Vitis
chemical_list: D000975:Antioxidants; D017392:Thiobarbituric Acid Reactive Substances