Show simple item record Monserrat, Laura Alicia Geracitano Monserrat, José María Bianchini, Adalto 2010-10-06T19:20:28Z 2010-10-06T19:20:28Z 2004
dc.identifier.citation GERACITANO, L. A ; MONSERRAT, J. M ; BIANCHINI, A. Oxidative stress in Laenoreis acuta (Polychaeta, Nereididae): environmental and seasonal effects. Marine Environmental Research, v. 58, n. 2, p. 625-630, 2004. pt_BR
dc.identifier.issn 0141-1136
dc.description.abstract Laeonereis acuta was seasonally collected in an industrially polluted site (P) and in an unpolluted site (UP) at the Patos Lagoon estuary (southern Brazil). Glutathione S-transferase (GST), superoxide dismutase (SOD) and catalase (CAT) activity (U/mg protein) was determined in five groups of worms from each site. Metallothionein (MT – lmol GSH/g ww) and lipid peroxides content (LPO – nmoles of cumene hydroperoxide/g ww) were also measured. Annual mean values for CAT (UP ¼ 3:7 _ 0:3; P ¼ 5:7 _ 0:6), GST (UP ¼ 0:034 _ 0:003; P ¼ 0:045 _ 0:004) and MT (UP ¼ 0:15 _ 0:02; P ¼ 0:23 _ 0:03) were higher ðp < 0:05Þ in worms from the P site. In autumn, CAT activity was higher ðp < 0:05Þ in worms from the P site (7.6_1.3) than in those from the UP site (3.6_0.4). In summer, MT concentration was higher in worms from the P site (0.37_0.03) than in those from the UP site (0.19_0.01). No significant difference ðp > 0:05Þ in the LPO content was observed in worms from the different sites or collected in different seasons. These results indicate that worms from the polluted site showed higher antioxidant responses than those from the unpolluted site, sufficient to prevent oxidative damage in terms of LPO. pt_BR
dc.language.iso eng pt_BR
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dc.subject Worm pt_BR
dc.subject Laeonereis acuta pt_BR
dc.subject Biomarkers pt_BR
dc.subject Oxidative stress pt_BR
dc.subject Seasonal effect pt_BR
dc.subject Antioxidant enzymes pt_BR
dc.title Oxidative stress in Laeonereis acuta (Polychaeta, Nereididae): environmental and seasonal effects pt_BR
dc.type article pt_BR

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