Effect of Cortisol on Aquaporin Expression in the Esophagus of the European Eel, Anguilla anguilla

A bstract : 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...

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Bibliographic Details
Published in:Annals of the New York Academy of Sciences
Main Authors: MARTINEZ, ANNE‐SOPHIE, WILSON, GILLIAN, PHILLIPS, CLAIRE, CUTLER, CHRISTOPHER, HAZON, NEIL, CRAMB, GORDON
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2005
Subjects:
History and Philosophy of Science
General Biochemistry, Genetics and Molecular Biology
General Neuroscience
Anguilla anguilla
Online Access:http://dx.doi.org/10.1196/annals.1327.072
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1196%2Fannals.1327.072
https://nyaspubs.onlinelibrary.wiley.com/doi/pdf/10.1196/annals.1327.072
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Summary:A bstract : 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.

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