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Modulation of pituitary response by dietary lipids and throughout a temperature fluctuation challenge in Gilthead Sea Bream

2019Journal article Open access
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dc.contributor.authorSánchez-Nuño, Sergio
dc.contributor.authorSilva, Sandra
dc.contributor.authorGuerreiro, Pedro M
dc.contributor.authorOrdóñez-Grande, Borja
dc.contributor.authorSanahuja, Ignasi
dc.contributor.authorFernández-Alacid, Laura
dc.contributor.authorIbarz, Antoni
dc.date.accessioned2020-07-29T11:15:18Z
dc.date.available2020-07-29T11:15:18Z
dc.date.issued2019
dc.description.abstractLow temperatures provoke drastic reductions in gilthead sea bream (Sparus aurata) activity and nourishment, leading to growth arrest and a halt in production. However, scarce data exist concerning the implications of central core control during the cold season. The aim of this work was to study the effects of low temperature and recovery from such exposure on the pituitary activity of sea bream juveniles fed 18% or 14% dietary lipid. A controlled indoor trial was performed to simulate natural temperature fluctuation (22 ◦C to 14 ◦C to 22 ◦C). Meanwhile, we determined the regulatory role of the pituitary by analyzing the gene expression of some pituitary hormones and hormone receptors via qPCR, as well as plasma levels of thyroidal hormones. In response to higher dietary lipids, hormone pituitary expressions were up-regulated. Induced low temperatures and lower ingesta modulated pituitary function up-regulating GH and TSH and thyroid and glucocorticoid receptors. All these findings demonstrate the capacity of the pituitary to recognize both external conditions and to modulate its response accordingly. However, growth, peripheral tissues and metabolism were not linked or connected to pituitary function at low temperatures, which opens an interesting field of study to interpret the hypothalamus–pituitary–target axis during temperature fluctuations in fish.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/fishes4040055pt_PT
dc.identifier.issn2410-3888
dc.identifier.urihttp://hdl.handle.net/10400.1/14539
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectLow temperaturespt_PT
dc.subjectPituitary hormonespt_PT
dc.subjectSparus auratapt_PT
dc.subjectTemperature recoverypt_PT
dc.subjectThyroxinept_PT
dc.subjectTriiodothyroninept_PT
dc.titleModulation of pituitary response by dietary lipids and throughout a temperature fluctuation challenge in Gilthead Sea Breampt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04326%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBIA-ANM%2F4225%2F2012/PT
oaire.citation.issue4pt_PT
oaire.citation.startPage55pt_PT
oaire.citation.titleFishespt_PT
oaire.citation.volume4pt_PT
oaire.fundingStream5876
oaire.fundingStream3599-PPCDT
person.familyNameSilva
person.familyNameGuerreiro
person.givenNameSandra
person.givenNamePedro Miguel
person.identifierA-2539-2009
person.identifier.ciencia-id9A10-9756-78D0
person.identifier.ciencia-id5C13-965D-3148
person.identifier.orcid0000-0002-6692-3620
person.identifier.orcid0000-0001-5371-7919
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationd0a8a148-98e7-4899-8fb0-0b8afa91e4a4
relation.isAuthorOfPublication.latestForDiscoverycb457cdc-f012-4b62-857c-bef486fd4ee6
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