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  • Title: [Functional role of V1- and V2-receptors of the apical and basolateral membranes of the frog bladder epithelial cells].
    Author: Prutskova NP, Shakhmatova EI, Natochin IuV.
    Journal: Ross Fiziol Zh Im I M Sechenova; 2000 Jan; 86(1):76-85. PubMed ID: 10740840.
    Abstract:
    Arginine vasotocin, 0.02--1 nM, increases osmotic water permeability of frog urinary bladder, arginine vasotocin after a simultaneous addition to the mucosal and serosal Ringer solutions rises the water permeability to a lesser degree than on the hormone addition only to the serosal solution. 1 nM remestyp, an agonist of V1-receptors, from the apical membrane decreases the hydroosmotic effect of arginine vasotocin added to the serosal Ringer solution. When added to the mucosal solution, combination of the same concentrations of arginine vasotocin and SR 49059, an antagonist of V--receptors, or desmopressin, agonist of V2-receptor alone, increases the effect of the same concentration of arginine vasotocin added to the serosal solution. 1 nM arginine vasotocin at the luminal membrane increases secretion into the Ringer solution of prostaglandin E, and prostaglandin E1 but not of prostaglandin F2 alpha. The data obtained indicate the presence of the arginine vasotocin receptors responsible for the hydroosmotic effect only in the basolateral membranes, while arginine prostaglandin E, participation is shown in modulation of the arginine vasotocin effect.
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