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Assessment of the mercury-selenium antagonism in rainbow trout fish

2022-01Journal article Restricted access
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dc.contributor.authorRibeiro, M.
dc.contributor.authorZephyr, N.
dc.contributor.authorSilva, J.A.L.
dc.contributor.authorDanion, M.
dc.contributor.authorGuérin, T.
dc.contributor.authorCastanheira, I.
dc.contributor.authorLeufroy, A.
dc.contributor.authorJitaru, P.
dc.date.accessioned2023-01-10T14:31:19Z
dc.date.available2023-01-10T14:31:19Z
dc.date.issued2022-01
dc.description.abstractThis study aims at the assessment of mercury (Hg)-selenium (Se) antagonism in fish. For this purpose, rainbow trout fish (Oncorhynchus mykiss) were exposed to methylmercury (MeHg) under controlled conditions, in the presence or absence of selenomethionine (SeMet) using an in-house prepared diet (enriched with MeHg and SeMet at 0.2 μg/g and 5.0 μg/g, respectively). The total duration of the exposure study was 3 months. Fish was sampled and analysed for total Se (SeT) and total mercury (HgT) content after 1, 2 and 3 months of exposure. Six feeding protocols were compared, depending on the exposure type: (i) no MeHg nor SeMet exposure (control group); (ii) exposure to SeMet solely; (iii) exposure to MeHg solely; (iv) exposure to both MeHg and SeMet; (v) exposure first to MeHg during 1 month and then to SeMet during 2 months and (vi), exposure to SeMet during 1 month and then to MeHg for 2 months. The levels of SeT and HgT in the fish (control and supplemented with MeHg/SeMet) were measured by inductively coupled plasma-mass spectrometry (ICPMS). Steadily (linear) bioaccumulation of MeHg in the fish muscle occurred when the fish were exposed individually to this species during the period. The bioaccumulation of MeHg is diminished when the fish are firstly exposed to SeMet and then to MeHg, hence indicating the MeHg detoxification due to SeMet supplementation.pt_PT
dc.description.abstractHighlights: Assessment of mercury (Hg)-selenium (Se) antagonism in fish through dietary exposure; MeHg saturation intake is reached in fish simultaneously exposed to MeHg and SeMet; This study confirms the detoxification effect of Se and Hg in rainbow trout fish.pt_PT
dc.description.sponsorshipThis project (MERSEL-FISH) was funded by ANSES and INSA.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationChemosphere. 2022 Jan;286(Pt 2):131749. doi: 10.1016/j.chemosphere.2021.131749. Epub 2021 Aug 3.pt_PT
dc.identifier.doi10.1016/j.chemosphere.2021.131749pt_PT
dc.identifier.issn0045-6535
dc.identifier.urihttp://hdl.handle.net/10400.18/8415
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0045653521022219?via%3Dihubpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectMercury Selenium Antagonismpt_PT
dc.subjectRainbow Trout Fishpt_PT
dc.subjectDietary Exposurept_PT
dc.subjectICP-MSpt_PT
dc.subjectComposição dos Alimentospt_PT
dc.subjectSegurança Alimentarpt_PT
dc.titleAssessment of the mercury-selenium antagonism in rainbow trout fishpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issuePt 2pt_PT
oaire.citation.startPage131749pt_PT
oaire.citation.titleChemospherept_PT
oaire.citation.volume286pt_PT
rcaap.embargofctAcesso de acordo com política editorial da revista.pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT

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