Effects of salt acclimation on water and urea permeabilities across the frog bladder: relationship with intramembrane particle aggregates

J M Verbavatz; A Frigeri; R Gobin; P Ripoche; J Bourguet

doi:10.1016/0300-9629(92)90365-w

Effects of salt acclimation on water and urea permeabilities across the frog bladder: relationship with intramembrane particle aggregates

Comp Biochem Physiol Comp Physiol. 1992 Apr;101(4):827-33. doi: 10.1016/0300-9629(92)90365-w.

Authors

J M Verbavatz¹, A Frigeri, R Gobin, P Ripoche, J Bourguet

Affiliation

¹ Service de Biologie Cellulaire, Centre d'Etudes Nucléaires de Saclay, Gif-sur-Yvette, France.

PMID: 1351457
DOI: 10.1016/0300-9629(92)90365-w

Abstract

1. In salt-acclimated frogs, water and urea bladder permeabilities are markedly higher than in tap water-acclimated animals. 2. Intra-membrane particle aggregates (IMPA) cover an unusually large surface area of the salt-acclimated frog bladder apical plasma membrane. 3. In saline-adapted animals, proteins extracted from the apical plasma membrane contain additional species of 19, 26, 31 and 53-61 kDa. These proteins might be related to the water channels contained by IMPA.

MeSH terms

Adaptation, Physiological / drug effects*
Animals
Cell Membrane / physiology
Cell Membrane / ultrastructure
Diffusion
Electrophoresis, Gel, Two-Dimensional
Epithelium / metabolism
Epithelium / physiology
Female
Freeze Fracturing
Microscopy, Electron
Permeability
Rana esculenta
Sodium Chloride / pharmacology*
Urea / pharmacokinetics*
Urinary Bladder / metabolism
Urinary Bladder / physiology*
Urinary Bladder / ultrastructure
Water / metabolism*

Substances

Water
Sodium Chloride
Urea