AQP6vs, AQP2 and/or AQP6ub are also expressed in these epithelial cells and are translocated to the apical membrane in response to arginine vasotocin, thereby regulating water absorption/reabsorption.
Water movement in these osmoregulatory organs is controlled by the neurohypophyseal hormone, arginine vasotocin (AVT; i.e., the non-mammalian vertebrate counterpart of arginine vasopressin (AVP)) (Bentley, 2002) (Fig.
Adaptive evolution of water homeostasis regulation in amphibians: vasotocin and hydrins.
Immunocytochemical studies on translocation of phosphorylated aquaporin-h2 protein in granular cells of the frog urinary bladder before and after stimulation with vasotocin. Cell Tissue Res.
Molecular cloning of an anuran V(2) type [Arg(8)] vasotocin receptor and mesotocin receptor: functional characterization and tissue expression in the Japanese tree frog (Hyla japonica).
Correlation between aquaporin and water permeability in response to vasotocin, hydrin and [beta]-adrenergic effectors in the ventral pelvic skin of the tree frog Hyla japonica.
Hydrins, hydroosmotic neurohypophysial peptides: osmoregulatory adaptation in amphibians through vasotocin precursor processing.