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Aquaporin molecular characterization in the sea bass (Dicentrarchus labrax): The effect of salinity on AQP1 and AQP3 expression

Research output: Contribution to journalArticle

Author(s)

I Giffard-Mena, V Boulo, F Aujoulat, H Fowden, R Castille, G Charmantier, Gordon Cramb

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Abstract

Euryhaline fish possess the ability to compensate for environmental salinity changes through hydro-mineral regulation. A number of proteins have been studied in order to understand water and ion exchanges, known as fish osmoregulation. Sea-bass (Dicentrarchus labrax) cDNA sequences encoding a homologue of mammalian aquaporin (termed AQP1) and a homologue of mammalian aquaglyceroporin (termed AQP3) have been isolated and sequenced. The aquaporin amino acid sequences share respectively more than 60% and 65% identity with other known aquaporins. We have shown that salinity influences aquaporin expression levels in the gill, kidney and digestive tract, the main osmoregulatory organs. AQP1 may have a major osmoregulatory role in water transport in kidney and gut in SW-acclimated fish, whereas AQP3 could be implicated in gill water transport in FW-acclimated fish. (c) 2007 Elsevier Inc. All rights reserved.

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Details

Original languageEnglish
Pages (from-to)430-444
Number of pages15
JournalComparative Biochemistry and Physiology
Volume149A
DOIs
Publication statusPublished - Oct 2007

    Research areas

  • aquaporins, gill, intestine, kidney, osmoregulation, salinity adaptation, teleost fish, water channel, EEL ANGUILLA-ANGUILLA, EUROPEAN EEL, FRESH-WATER, SEAWATER ACCLIMATION, CHLORIDE CELLS, CORTISOL TREATMENT, GILL EPITHELIUM, URINARY SYSTEM, OSMOREGULATION, PROTEIN

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ID: 388061