[Effects of prolactin on chloremia and HCO3 dependant ATPase activities in kidney and gill of grey mullet, chelon Labrosus, during fresh water adaptation (author's transl)].
Only in SW fish, Prolactin (PRL) treatment increased natremia and especially chloremia. In gill, the decreases of Mg++ ATPase and SCN-sensitive, HCO3-ATPase observed in control fish after transfert from SW to FW, were more marqued in FW 8 days PRL treated fish. Renal enzyme activities were not affected by PRL treatment. If PRL treatment acts effectively on branchial ionic extrusion mechanisms, the connection between HCO3-ATPase anc Cl--transport remains to be elucidated. These results can be explained with reference to existence of two chloride-cell types.
D000222:Adaptation, Physiological; D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D002713:Chlorine / Q000097:blood*; D005399:Fishes / Q000502:physiology*; D005618:Fresh Water; D005880:Gills / Q000187:drug effects / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007668:Kidney / Q000187:drug effects / Q000378:metabolism; D011388:Prolactin / Q000494:pharmacology*; D014882:Water-Electrolyte Balance
D002713:Chlorine; D011388:Prolactin; D000251:Adenosine Triphosphatases
Effets de la prolactine sur la chlorémie et les activités HCO3 ATP asiques rénales et branchiales chez le mulet, Chelon Labrosus, au cours de l'adaptation à l'eau douce.