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Antioxidant biochemical responses to long-term copper exposure in Bathymodiolus azoricus from Menez-Gwen hydrothermal vent

2008Journal article Restricted access
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dc.contributor.authorCompany, Rui
dc.contributor.authorSerafim, Angela
dc.contributor.authorCosson, Richard P.
dc.contributor.authorFiala-Médioni, Aline
dc.contributor.authorCamus, Lionel
dc.contributor.authorColaço, Ana
dc.contributor.authorSerrão-Santos, Ricardo
dc.contributor.authorBebianno, Maria João
dc.date.accessioned2020-05-05T08:22:52Z
dc.date.available2020-05-05T08:22:52Z
dc.date.issued2008
dc.description.abstractCopper (Cu) is essential to various physiological processes in marine organisms. However, at high concentrations this redox-active transition metal may enhance the formation of reactive oxygen species (ROS) and subsequently initiate oxidative damage. High concentrations of Cu may increase oxidative damage to lipids, proteins and DNA. Bathymodiolus azoricus is a Mytilid bivalve very common in hydrothermal environments near the Azores Triple Junction continuously exposed to high metal concentrations, including Cu, emanating from the vent fluids. The knowledge of antioxidant defence system and other stress related biomarkers in these organisms is still scarce. The aim of this work was to study the effect of Cu (25 microg l(-1); 24 days exposure; 6 days depuration) on the antioxidant stress biomarkers in the gills and mantle of B. azoricus. The expression of stress related biomarkers was tissue-dependent and results suggest that other factors than metal exposure may influence stress biomarkers, since little variation in antioxidant enzymes activities, MT concentrations, LPO and total oxyradical scavenging capacity (TOSC) occurred in both control and Cu-exposed mussels. Moreover, there is a general tendency for these parameters to increase with time, in both control and Cu-exposed mussels, suggesting that reactive oxygen species (ROS) formation is not metal dependent, and may be related with poor physiological conditions of the animals after long periods in adverse conditions compared to those in hydrothermal environments.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.scitotenv.2007.08.056pt_PT
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/10400.1/13829
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAnimalspt_PT
dc.subjectAntioxidantspt_PT
dc.subjectCopperpt_PT
dc.subjectEnvironmental exposurept_PT
dc.subjectFree radical scavengerspt_PT
dc.subjectHot temperaturept_PT
dc.subjectLipid peroxidationpt_PT
dc.subjectMetallothioneinpt_PT
dc.subjectMytilidaept_PT
dc.subjectOxidative stresspt_PT
dc.subjectProteinspt_PT
dc.subjectSeawaterpt_PT
dc.subjectTime factorspt_PT
dc.subjectWater pollutantspt_PT
dc.subjectChemicalpt_PT
dc.titleAntioxidant biochemical responses to long-term copper exposure in Bathymodiolus azoricus from Menez-Gwen hydrothermal ventpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage417pt_PT
oaire.citation.issue2-3pt_PT
oaire.citation.startPage407pt_PT
oaire.citation.titleScience of the Total Environmentpt_PT
oaire.citation.volume389pt_PT
person.familyNamePereira Serafim
person.familyNameBebianno
person.givenNameMaria Angela
person.givenNameMaria
person.identifier.ciencia-id9C18-090A-5E3D
person.identifier.ciencia-id2B11-46AC-B94B
person.identifier.orcid0000-0002-1165-0645
person.identifier.orcid0000-0003-1492-8566
person.identifier.scopus-author-id7004152715
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication0e42fc03-7052-438d-952b-b3caa5bdc36a
relation.isAuthorOfPublication2e00a26d-1dd3-4c22-a6bf-ac7943ae0d32
relation.isAuthorOfPublication.latestForDiscovery2e00a26d-1dd3-4c22-a6bf-ac7943ae0d32

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