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Active absorption of Cl- and Na+ in posterior gills of Chinese crab Eriocheir sinensis: Modulation by dopamine and cAMP
Mo, J.L.; Devos, P.; Trausch, G. (2003). Active absorption of Cl- and Na+ in posterior gills of Chinese crab Eriocheir sinensis: Modulation by dopamine and cAMP. J. Crust. Biol. 23(3): 505-512
In: Journal of Crustacean Biology. Crustacean Society: Washington. ISSN 0278-0372; e-ISSN 1937-240X, meer
Peer reviewed article  
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  • Mo, J.L.
  • Devos, P.
  • Trausch, G.
Abstract
    Isolated posterior gills from the Chinese crab Eriocheir sinensis acclimated to freshwater (FW) were used for perfusion. Dopamine and dibutyryl cAMP (db-cAMP) induced a significant increase of 36Cl- influx. When amiloride, a specific sodium selective channels blocker, was added to the incubation saline, it induced a dramatic decrease of 22Na+ influx, and such ail effect could be reversed by dopamine or db-cAMP. In the same experimental condition, we observed that ouabain added to the scrosal side induced a marked decrease of the stimulating effect of db-cAMP on 22Na+ uptake across the epithelium to the hemolymph, suggesting that dopamine stimulates Na+ and Cl- influxes via cAMP and Na+/K+-ATPase pathways.
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