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Effect of cortisol on aquaporin expression in the esophagus of the European eel, Anguilla anguilla.

TitreEffect of cortisol on aquaporin expression in the esophagus of the European eel, Anguilla anguilla.
Type de publicationJournal Article
Year of Publication2005
AuteursMartinez, A-S, Wilson, G, Phillips, C, Cutler, C, Hazon, N, Cramb, G
JournalAnn N Y Acad Sci
Volume1040
Pagination395-8
Date Published2005 Apr
ISSN0077-8923
Mots-clésAnguilla, Animals, Aquaporin 1, Eels, Esophagus, Gene Expression Regulation, Hydrocortisone
Résumé

Long-term cortisol infusion into freshwater (FW)-adapted eels induced a significant increase in aquaporin-1 (AQP1) mRNA expression within the esophageal epithelium of migratory "silver" eels, but not in nonmigratory, immature "yellow" eels. Cortisol treatment had no significant effect on the mRNA abundance of a second aquaporin-1 isoform, termed AQP1dup, which exhibited a highly variable expression profile among individual members of all fish groups. These results suggest that cortisol, at plasma concentrations similar to that found during FW/seawater (SW) acclimation, induces upregulation in AQP1 expression and thus increases esophageal water permeability during the migration of eels to the SW environment.

DOI10.1196/annals.1327.072
Alternate JournalAnn. N. Y. Acad. Sci.
Identifiant (ID) PubMed15891071