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Effect of dopamine, cyclic AMP, and pericardial organs on sodium uptake and Na/K-ATPase activity in gills of the green crabCarcinus maenas (L)

✍ Scribed by Sommer, Michael J. ;Mantel, Linda H.

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 606 KB
Volume: 248
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1402480305

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✦ Synopsis

Injection of M dopamine or

M dibutyryl cyclic AMP (dbcAMP) into intact Carcznus maenas significantly increased influx of sodium from 100% sea water. Injection of pericardial organ (PO) extract, which contains dopamine, also increased influx of sodium. Animals injected with dopamine or PO extract and gills treated with dbcAMP in vitro showed increased NaiK-ATPase activity in the microsomal fraction of the gills. These results suggest a mechanism for short-term activation of Na/K-ATPase when crabs are transferred to a dilute medium.

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