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Natural gaps associated with oxidative stress in Willisornis poecilinotus (Aves: Thamnophilidae) in a tropical forest Acta Amazonica
Gomes,Andreza de Lourdes Souza; Gonçalves,Andrey Felipe Gomes; Vieira,José Luiz Fernandes; Marceliano,Maria Luiza Videiro; Silva,José Maria Cardoso da.
Natural disturbances in tropical forests modify the availability and quality of resources and alter the patterns of bird distribution. These environmental changes increase the metabolic rate and disrupt the redox balance promoting oxidative stress. This study aimed to compare the abundance of Willisornis poecilinotus between gaps and the understory of a forest with undisturbed canopy at Caxiuanã National Forest. The abundance was correlated with vegetation heights. The oxidative stress and the stress promoting factors were determined in both sites of sampling. We captured 81 specimens of W. poecilinotus. The number of captures was high in gaps. The specimens sampled at gaps showed high levels of oxidative stress. The biomarkers of oxidative stress were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Environmental disturbances; Redox balance; Lipid peroxidation.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200006
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Oxidative stress and skeletal muscle dysfunction are present in healthy smokers BJMBR
Neves,C.D.C.; Lacerda,A.C.R.; Lage,V.K.S.; Lima,L.P.; Tossige-Gomes,R.; Fonseca,S.F.; Rocha-Vieira,E.; Teixeira,M.M.; Mendonça,V.A..
Chronic exposure to cigarette smoke seems to be related to an increase of pro-inflammatory cytokines, oxidative stress and changes in muscular and physical performances of healthy smokers. However, these parameters have not yet been evaluated simultaneously in previous studies. The participants of this study were healthy males divided into two groups: smokers (n=20) and non-smokers (n=20). Inflammation was evaluated by measuring plasma levels of the cytokines IL-10, IL-6 e TNF-α, and of the soluble receptors sTNFR1 and sTNFR2. Oxidative stress was evaluated by determination of thiobarbituric acid reactive substances (TBARS) plasma levels, total antioxidant capacity of plasma and erythrocytes activity of the antioxidant enzymes superoxide dismutase (SOD)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Inflammation; Muscle endurance; Redox balance; Smoking; Tobacco cigarette.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016001100702
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