Studies on the renal receptors of loop diuretics

Clinical and Experimental Hypertension. Part A, Theory and Practice
J Greven

Abstract

The principal renal action of loop diuretics is to inhibit active NaCl transport in the thick ascending limb of the loop of Henle. However, apart from their specific tubular action, kidney function may be affected in other ways. By employing the enantiomeres of the new loop diuretic ozolinone, non-stereospecific increase in renal blood flow and inhibition of tubular secretion of p-aminohippurate and urate were found. In contrast, electrolyte transport in the loop of Henle was inhibited stereospecifically. Perfusion of single loops of rat kidneys in vivo with sugar-specific lectins suggested that a fucose-containing glycoprotein is involved in electrolyte transport in this tubular segment. Loop diuretics might interact with this glycoprotein, leading to inhibition of electrolyte transport. Evidence is presented to suggest that this protein is the Tamm-Horsfall protein. This fucose-containing glycoprotein is localized in the cell membranes of the thick ascending limb of the loop of Henle. It binds furosemide at concentrations very close to those required for inhibition of electrolyte transport in vivo. Furthermore, there is complete agreement between the sodium concentration necessary for stimulation of active transport in isolat...Continue Reading

References

Jan 1, 1978·Advances in Carbohydrate Chemistry and Biochemistry·I J Goldstein, C E Hayes
Sep 1, 1979·Kidney International·J R Hoyer, M W Seiler
Apr 18, 1979·Biochimica Et Biophysica Acta·W van DijkW Ferwerda
Oct 16, 1978·Naunyn-Schmiedeberg's Archives of Pharmacology·J Greven, O Heidenreich
Mar 1, 1982·Naunyn-Schmiedeberg's Archives of Pharmacology·K HeintzeO Heidenreich
May 1, 1950·Proceedings of the Society for Experimental Biology and Medicine·I TAMM, F L HORSFALL

Citations

Dec 1, 1987·Hearing Research·L P Rybak, C Whitworth
Jan 1, 1986·Acta Physiologica Scandinavica·O Eriksson, P J Wistrand
Mar 13, 2002·Upsala Journal of Medical Sciences·O KällskogM Wolgast
Jan 1, 1985·Zeitschrift für Kardiologie·J W GorrodW Ritter
Jan 1, 1988·Fundamental & Clinical Pharmacology·E Giesen-CrouseJ L Imbs
May 1, 1989·The American Journal of Physiology·E D DruggeJ C McGiff

Related Concepts

Ozolinone, (Z)-(-)-isomer
Umod protein, rat
Metazoa
Chloride Ion Level
Diuretic Effect
Salix - substance
Renal Tubule Structure
Structure of Ascending Limb of Henle's Loop
Mucoproteins
Receptors, Drug

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