Summary
Vasopressin-induced transformation of ridges to microvilli on the surface of granular cells of toad urinary bladder occurs in conjunction with induced alterations in the water permeability of the luminal membrane. This study was designed to establish the relationship between the time course for induction of microvilli and the time course for induction of increased water permeability after vasopressin stimulation. Hemibladders were examined at 2.5, 5, 10, 20 and 30 min following exposure to 20 mU/ml of vasopressin and at 5, 10, 20, 30, 40, 50 and 60 min after washout of vasopressin. Within 2.5 min, vasopressin initiated complete transformation of ridges to microvilli on approximately 13% of the granular cells, while osmotic water flow (Jv) was 0.31±0.10 μl·min−1·cm−2. Five minutes following vasopressin stimulation, microvilli were present on approximately 30% of granular cells andJv was 2.27±0.13 μl·min−1·cm−2. At 10 minJv was maximum at 4.03±0.15 μl·min−1·cm−2 and 50% of the granular cells were covered with microvilli. This percentage increased to 70% at 20 min and was maintained at 30 min, althoughJv decreased to 3.9±0.35 μl·min−1·cm−2 at 30 min. Five minutes following vasopressin washout, ridges interspersed with microvilli reappeared asJv fell to 1.10±0.30 μl·min−1·cm−2. At 10 min after vasopressin washout,Jv approached basal levels, but the reversal of microvilli to ridges remained incomplete. At 60 min after vasopressin washout, the granular cells had regained their original ridgelike surface structures. Thus, these studies establish a temporal relationship between the induction and reversibility of vasopressin-induced microvillous formation and alterations in the osmotic water permeability of the apical plasmalemma.
Similar content being viewed by others
References
Allen, F., Tisher, C.C. 1976. Morphology of the ascending thick limb of Henle.Kidney Int. 9:8–22
Bentley, P.J. 1958. The effects of neurohypophysial extracts on water transfer across the wall of the isolated urinary bladder of the toadBufo marinus.J. Endocrinol. 17:201–209
Bourguet, J., Jard, S. 1964. Un depositif automatique du mesure et d'enregistrement du flux net d'eau à travers la peau et al vessie des amphibiens.Biochim. Biophys. Acta 88:442–444
Croker, B.P., Tisher, C.C. 1971. Effects of fixation on vasopressininduced formation of intercellular spaces in the toad urinary bladder.Am. J. Pathol. 63:371–382
Davis, W.L., Goodman, D.B.P., Martin, J.H., Matthews, J.L., Rasmussen, H. 1974. Vasopressin-induced changes in the toad urinary bladder epithelial surface.J. Cell Biol. 61:544–547
Dratwa, M., LeFurgey, A., Tisher, C.C. 1979a. Effect of vasopressin and serosal hypertonicity on toad urinary bladder.Kidney Int. 16:695–703
Dratwa, M., Tisher, C.C. 1979. Effect of hypertonicity and colchicine on intramembranous particle aggregation in toad urinary bladder.Cell Tissue Res. 196:263–269
Dratwa, M., Tisher, C.C., Sommer, J.R., Croker, B.P. 1979b. Intramembranous particle aggregation in toad urinary bladder after VP stimulation.Lab. Invest. 40:46–54
Edelman, I.S., Petersen, M.J., Gulyassy, P.F. 1964. Kinetic analysis of the antidiuretic action of vasopressin and adenosine-3′, 5′-monophosphate.J. Clin. Invest. 43:2185–2194
Eggena, P. 1972. Osmotic regulation of toad bladder responsiveness to neurohypophysial hormones.J. Gen. Physiol. 60:665–678
Eggena, P., Walter, R., Schwartz, I.L. 1968. Relationship between hydroosmotic flow and the inhibited response of the toad bladder to vasopressin.Life Sci. 7:59–63
Kachadorian, W.A., Casey, C., DiScala, V.A. 1978. Time course of ADH-induced intramembranous particle aggregation in toad urinary bladder.Am. J. Physiol. 234:F461-F465
Karlin, A. 1963. Thein vitro release by the toad bladder of an inhibitor of oxytocin.Biochem. Biophys. Res. Commun. 11:44–49
Mills, J.W., Malick, L.E. 1978. Mucosal surface morphology of the toad urinary bladder.J. Cell Biol. 77:598–610
Schwartz, I.L., Walter, R. 1967. Factors influencing the reactivity of the toad bladder to the hydro-osmotic action of vasopressin.Am. J. Med. 42:769–776
Snedecor, G.W., Cochran, W.G. 1967. Statistical Methods, 6th ed. Iowa State University Press, Ames, Iowa
Spinell, F., Grosso, A., DeSousa, R.C. 1974. Effects of vasopressin and cytochalasin B on the apical membrane of the toad bladder and the collecting duct in the mammalian kidney.Inserm 30:195–197
Spinelli, F., Grosso, A., DeSousa, R.C. 1975. The hydrosmotic effect of vasopressin: A scanning electron-microscope study.J. Membrane Biol. 23:139–156
Ussing, H.H., Zerahn, K. 1951. Active transport of sodium as the source of electric current in the short-circuited isolated frog skin.Acta Physiol. Scand. 23:110–127
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
LeFurgey, A., Tisher, C.C. Time course of vasopressin-induced formation of microvilli in granular cells of toad urinary bladder. J. Membrain Biol. 61, 13–19 (1981). https://doi.org/10.1007/BF01870748
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01870748