PNAS 1989-07-01

Hydrins, hydroosmotic neurohypophysial peptides: osmoregulatory adaptation in amphibians through vasotocin precursor processing.

Y Rouillé, G Michel, M T Chauvet, J Chauvet, R Acher

Index: Proc. Natl. Acad. Sci. U. S. A. 86 , 5272-5275, (1989)

Full Text: HTML

Abstract

From neurointermediate pituitary glands of Xenopus laevis and Rana esculenta, previously unreported peptides termed hydrins, active on water permeability of frog urinary bladder and frog skin (Brunn or "water-balance" effect), have been isolated and sequenced. These peptides seem to be derived from the pro-vasotocin-neurophysin precursor. Hydrin 1, found in Xenopus, has been identified as vasotocin C-terminally extended with the Gly-Lys-Arg sequence; hydrin 2, found in Rana, has been identified as vasotocin C-terminally extended with glycine. Hydrin 2 has been detected in several Ranidae (R. esculenta, Rana temporaria, Rana pipiens) and Bufonidae (Bufo bufo, Bufo ictericus) and appears to have a large distribution in terrestrial or semiaquatic anurans. Hydrins, in contrast to vasotocin, are not active on rat uterus or rat blood pressure. They are absent from other vasotocin-bearers such as birds and could be involved specifically in water-electrolyte regulation of amphibians.


Related Compounds

Related Articles:

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.

2010-01-15

[J. Exp. Biol. 213 , 288-294, (2010)]

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).

2003-07-01

[Gen. Comp. Endocrinol. 132 , 485-498, (2003)]

The water-absorption region of ventral skin of several semiterrestrial and aquatic anuran amphibians identified by aquaporins.

2010-11-01

[Am. J. Physiol. Regul. Integr. Comp. Physiol. 299 , R1150-1162, (2010)]

Adaptive evolution of water homeostasis regulation in amphibians: vasotocin and hydrins.

1997-08-01

[Biol. Cell 89(5-6) , 283-91, (1997)]

Effects of central vasopressin administration to infant rats.

1993-03-16

[Eur. J. Pharmacol. 233(1) , 101-7, (1993)]

More Articles...