Sulfate absorption in Aplysia californica gut: glucocorticoid inhibition

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Abstract:



Mucosal membranes of foregut epithelia of Aplysia californica contain a sodium/sulfate symporter. Dexamethasone inhibited the absorptive activity of the sodium/sulfate symporter, whereas amiloride had no effect on it. It appears that glucocorticoids or their molluscan equivalent play a role in the overall regulation of sulfate homeostasis by the A. californica gut.

Les membranes muqueuses de l'épithélium de la partie antérieure du tube digestif d'Aplysia californica, contiennent un symporteur sodium/sulfate. Le dexaméthasone inhibe l'activité du symporteur, alors que l'amiloride reste sans effet. Il semble que les glucocorticoïdes, ou leur équivalent chez les mollusques, jouent un rôle dans la régulation globale de l'homéostasie des sulfates par le tube digestif chez A. califormica.[Traduit par la Rédaction]

Document Type: Miscellaneous

Publication date: November 1, 2002

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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