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Sub-lethal effects of cadmium on the antioxidant defence system of the hydrothermal vent mussel Bathymodiolus azoricus

2010Journal article Restricted access
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dc.contributor.authorCompany, Rui
dc.contributor.authorSerafim, M.A.
dc.contributor.authorCosson, Richard P.
dc.contributor.authorFiala-Médioni, Aline
dc.contributor.authorCamus, Lionel
dc.contributor.authorSerrão-Santos, Ricardo
dc.contributor.authorBebianno, Maria João
dc.date.accessioned2020-04-29T13:01:44Z
dc.date.available2020-04-29T13:01:44Z
dc.date.issued2010
dc.description.abstractThe mussel Bathymodiolus azoricus is one of the most abundant species in the Mid-Atlantic Ridge hydrothermal vents and is continually exposed to the high-temperature venting fluids containing high metal concentrations and enriched in sulphides and methane, which constitute a potential toxic environment for marine species. The aim of this study was to assess the effects of a sub-lethal Cd concentration on the antioxidant defence system of this mussel. B. azoricus were collected at Menez Gwen vent site (37 degrees 51'N, 32 degrees 31'W) and exposed to Cd (50 microg l(-1)) during 24 days, followed by a depuration period of six days. A battery of stress related biomarkers including antioxidant enzymes (superoxide dismutase-SOD, catalase-CAT; glutathione peroxidases-GPx), metallothioneins (MT), lipid peroxidation (LPO) and total oxyradical scavenging capacity (TOSC) were measured in the gills and mantle of B. azoricus. Cd was accumulated linearly during the exposure period in both tissues and no significant elimination occurred after the 6 days of depuration. Antioxidant enzymes activities were significantly higher in the gills. Cyt-SOD, T-GPx and Se-GPx were induced during the experiment but this was also observed in control organisms. Mit-SOD and CAT activities remained relatively unchanged. MT levels increased linearly in the gills of exposed mussels in the first 18 days of exposure. No significant differences were observed between LPO levels of control and exposed mussels. TOSC levels remained unchanged in control and exposed mussels. This suggests that although Cd is being accumulated in the tissues of exposed mussels, MT defence system is enough to detoxify the effect of Cd accumulated in the tissues. Furthermore, other factors besides the presence of Cd are influencing the antioxidant defence system in B. azoricus.pt_PT
dc.description.sponsorshipEuropean Union (EU) - EVK3-CT1999-00003; Research Council of Norway; Norwegian Marine Research Laboratory; Ministry of Science and Technology of Portugalpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ecoenv.2010.01.003pt_PT
dc.identifier.issn0147-6513
dc.identifier.urihttp://hdl.handle.net/10400.1/13803
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.ncbi.nlm.nih.gov/pubmed/20137812pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAnimalspt_PT
dc.subjectAntioxidantspt_PT
dc.subjectCadmiumpt_PT
dc.subjectCatalasept_PT
dc.subjectGeological phenomenapt_PT
dc.subjectGlutathione peroxidasept_PT
dc.subjectLipid peroxidationpt_PT
dc.subjectMetallothioneinpt_PT
dc.subjectMytilidaept_PT
dc.subjectSuperoxide dismutasept_PT
dc.subjectHydrothermal ventspt_PT
dc.subjectBathymodiolus azoricuspt_PT
dc.subjectCdpt_PT
dc.subjectOxidative stresspt_PT
dc.subjectAntioxidant enzymespt_PT
dc.titleSub-lethal effects of cadmium on the antioxidant defence system of the hydrothermal vent mussel Bathymodiolus azoricuspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage795pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage788pt_PT
oaire.citation.titleEcotoxicology and Environmental Safetypt_PT
oaire.citation.volume73pt_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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