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dc.contributor.authorGanga, Rachiden_UK
dc.contributor.authorBell, J Gordonen_UK
dc.contributor.authorMontero, Danielen_UK
dc.contributor.authorAtalah, Eyaden_UK
dc.contributor.authorVraskou, Yoryiaen_UK
dc.contributor.authorFernandez-Vaquero, Agustinen_UK
dc.contributor.authorIzquierdo, Marisol Sen_UK
dc.contributor.authorTort, Lluisen_UK
dc.description.abstractThe mode of action of highly unsaturated fatty acids (HUFA) in regulating gilthead sea bream (Sparus aurata) head kidney (HK) cortisol production was studied through in vitro trials using a dynamic superfusion system. Fish were previously fed with different diets containing several inclusion levels of linseed oil (LO) or soyabean oil (SO) for 26 weeks. Five diets were tested; anchovy oil was the only lipid source for the control diet (fish oil, FO) and two different substitution levels (70 and 100 %) were tested using either LO or SO (70LO, 70SO, 100LO and 100SO). Fatty acid compositions of the HK reflected the dietary input, thus EPA, DHA, arachidonic acid and n-3 HUFA were significantly (P,0·05) reduced in fish fed vegetable oils compared with fish fed the FO diet. Feeding 70 or 100% LO increased significantly (P,0·05) cortisol release in HK after stimulation with adrenocorticotrophic hormone (ACTH), while feeding SO had no effect on this response. Cortisol stimulation factor (SF) was increased in fish fed the 70LO and 100LO diets compared with fish fed the control diet. Moreover, eicosanoid inhibition by incubating the HK tissue with indomethacin (INDO) as a cyclo-oxygenase (COX) inhibitor, or nordihydroguaiaretic acid (NDGA) as a lipoxygenase (LOX) inhibitor, significantly reduced (P,0·05) the cortisol release after ACTH stimulation in the 70LO and 100LO diets. Cortisol SF was reduced in the FO, 70LO and 100LO diets when incubating the HK with INDO or NDGA, while it was increased in the 70SO diet. The present results indicate that changing the fatty acid profile of gilthead sea bream HK by including LO and/or SO in the fish diet affected the in vitro cortisol release, and this effect is partly mediated by COX and/or LOX metabolites.en_UK
dc.publisherCambridge University Pressen_UK
dc.relationGanga R, Bell JG, Montero D, Atalah E, Vraskou Y, Fernandez-Vaquero A, Izquierdo MS & Tort L (2011) Adrenocorticotrophic hormone-stimulated cortisol release by the head kidney inter-renal tissue from sea bream (Sparus aurata) fed with linseed oil and soyabean oil. British Journal of Nutrition, 105 (2), pp. 238-247.
dc.rightsPublished in British Journal of Nutrition. Copyright: Cambridge University Press. British Journal of Nutrition, Volume 105, Issue 2, September 2010, pp. 238 - 247, published by Cambridge University Press, Copyright © Cambridge University Press 2010.
dc.subjectGilthead seabreamen_UK
dc.subjectHighly unsaturated fatty acidsen_UK
dc.subjectLinseed oilen_UK
dc.subjectsoyabean oilen_UK
dc.subjectnordihydroguiacetic aciden_UK
dc.subjectHead kidneyen_UK
dc.subjectFishes Feeding and feedsen_UK
dc.subjectDietary supplementsen_UK
dc.titleAdrenocorticotrophic hormone-stimulated cortisol release by the head kidney inter-renal tissue from sea bream (Sparus aurata) fed with linseed oil and soyabean oilen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[Ganga et al 2010 web version.pdf] Publisher conditions require a 12 month embargo.en_UK
dc.citation.jtitleBritish Journal of Nutritionen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.affiliationUniversidad de Las Palmas de Gran Canariaen_UK
dc.contributor.affiliationInstitute of Aquacultureen_UK
dc.contributor.affiliationUniversidad de Las Palmas de Gran Canariaen_UK
dc.contributor.affiliationUniversidad de Las Palmas de Gran Canariaen_UK
dc.contributor.affiliationUniversidad de Las Palmas de Gran Canariaen_UK
dc.contributor.affiliationBioMar Iberia/ProAqua Nutritionen_UK
dc.contributor.affiliationUniversidad de Las Palmas de Gran Canariaen_UK
dc.contributor.affiliationUniversitat Autonoma de Barcelonaen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorGanga, Rachid|en_UK
local.rioxx.authorBell, J Gordon|en_UK
local.rioxx.authorMontero, Daniel|en_UK
local.rioxx.authorAtalah, Eyad|en_UK
local.rioxx.authorVraskou, Yoryia|en_UK
local.rioxx.authorFernandez-Vaquero, Agustin|en_UK
local.rioxx.authorIzquierdo, Marisol S|en_UK
local.rioxx.authorTort, Lluis|en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameGanga et al 2010 web version.pdfen_UK
Appears in Collections:Aquaculture Journal Articles

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