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Regulation of calcium balance in the sturgeon Acipenser naccarii: a role for PTHrP

2007Journal article Restricted access
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dc.contributor.authorFuentes, J.
dc.contributor.authorHaond, Christophe
dc.contributor.authorGuerreiro, P. M.
dc.contributor.authorSilva, Nádia
dc.contributor.authorPower, Deborah
dc.contributor.authorCanario, Adelino V. M.
dc.date.accessioned2014-05-21T13:55:04Z
dc.date.available2014-05-21T13:55:04Z
dc.date.issued2007
dc.date.updated2014-05-13T09:27:45Z
dc.description.abstractCalcium regulation in sturgeon is of special interest because they are a representative of the ancient fishes possessing mainly cartilaginous skeletons and a supposedly low calcium demand. The present study aimed to characterize the effect of a chronic absence of dietary calcium and the effect of parathyroid hormone-related protein (PTHrPA) (1-34) (7) on calcium balance in juvenile sturgeon (Acipenser naccarii). At rest, sturgeon juveniles are in net positive calcium balance, since whole body calcium uptake is significantly higher than efflux and calcium accumulates in the body. To study the importance of dietary calcium, the sturgeon were kept on a calcium-free diet for 8 wk. This manipulation impaired growth as measured by failure to gain weight or increase in length and indicates that dietary calcium is important for growth in sturgeon. An increased whole body calcium uptake partially compensated dietary calcium deficiency and was associated with increased gill chloride cell number in lamellae and filaments in parallel with increased gill Na(+)K(+)-ATPase activity. In addition, a single injection of piscine PTHrP(1-34) significantly increased whole body calcium uptake and decreased whole body calcium efflux. Administration of PTHrP significantly increased circulating plasma calcium 4-24 h postinjection. The increase in net calcium transport and increased plasma levels of calcium is consistent with the actions of a hypercalcemic factor. It would appear that the sturgeon rely on calcium for growth and tightly regulate calcium transport. The action in calcium balance is consistent with PTHrP acting as a hypercalcemic factor in sturgeon.por
dc.identifier.citationFuentes, J.; Haond, C.; Guerreiro, P. M.; Silva, N.; Power, D. M.; Canario, A. V. M.Regulation of calcium balance in the sturgeon Acipenser naccarii: a role for PTHrP, American Journal of Physiology-Regulatory Integrative and Comparative Physiology, 293, 2, R884-R893, 2007por
dc.identifier.urihttp://hdl.handle.net/10400.1/4027
dc.language.isoengpor
dc.peerreviewedyespor
dc.titleRegulation of calcium balance in the sturgeon Acipenser naccarii: a role for PTHrPpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage893por
oaire.citation.startPage884por
oaire.citation.titleAmerican Journal of Physiology-Regulatory Integrative and Comparative Physiologypor
oaire.citation.volume293por
person.familyNameFuentes
person.familyNameGuerreiro
person.familyNameSilva
person.familyNamePower
person.familyNameCanario
person.givenNameJuan
person.givenNamePedro Miguel
person.givenNameNádia
person.givenNameDeborah Mary
person.givenNameAdelino
person.identifier392998
person.identifierA-2539-2009
person.identifier143624
person.identifier.ciencia-id421B-E196-2C33
person.identifier.ciencia-id5C13-965D-3148
person.identifier.ciencia-id5D1F-6F3A-A1C2
person.identifier.ciencia-id891A-8A44-3CAE
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0003-0430-8734
person.identifier.orcid0000-0001-5371-7919
person.identifier.orcid0000-0001-9881-4421
person.identifier.orcid0000-0003-1366-0246
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id7201832526
person.identifier.scopus-author-id10244362100
person.identifier.scopus-author-id7101806760
person.identifier.scopus-author-id56568523700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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