The mechanisms of brush border Na+/H+ exchanger activation by corticosteroids

Background: Previously we showed that corticosterone and aldosterone increased proton fluxes in proximal tubule, by micropuncture and stationary microperfusion. Since the Na+/H+ exchanger is responsible for the main proximal proton secretion, we have now evaluated the effects aldosterone on Na+/H+ e...

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Autor principal: Zallocchi, M.
Otros Autores: Igarreta, P., Calvo, J.C, Reboucas, N.A, Damasco, M.C
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2003
Acceso en línea:Registro en Scopus
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Registro en la Biblioteca Digital
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024 7 |2 scopus  |a 2-s2.0-0037297084 
024 7 |2 cas  |a acridine orange, 494-38-2, 65-61-2; aldosterone, 52-39-1, 6251-69-0; corticosterone, 50-22-6; gluconate sodium, 527-07-1; sodium proton exchange protein, 204597-32-0; Aldosterone, 52-39-1; Anti-Inflammatory Agents; Corticosterone, 50-22-6; Gluconates; gluconic acid, 526-95-4; Protein Isoforms; Slc9a2 protein, rat; Sodium-Hydrogen Antiporter; sodium-hydrogen exchanger 3 
040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a MSMOF 
100 1 |a Zallocchi, M. 
245 1 4 |a The mechanisms of brush border Na+/H+ exchanger activation by corticosteroids 
260 |c 2003 
270 1 0 |m Damasco, M.C.; Dep. Quimica Biologica, Pabellón 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina; email: cdamasco@qb.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
504 |a Biemesderfer, D., Pizzonia, J., Abu-AlFa, A., NHE3: A Na+/H+ exchanger isoform of the renal brush border (1993) Am J Physiol, 265, pp. 736-742 
504 |a Freiberg, J., Kinsella, J., Sacktor, B., Glucocorticoids increase the Na+-H+ exchange and decrease the Na+ gradient-dependent phosphate-uptake systems in renal brush border membrane vesicles (1982) Proc Natl Acad Sci USA, 79, pp. 4932-4936 
504 |a Igarreta, P., Calvo, J., Paladini, A., Damasco, M., Acute effects of two natural corticosteroids on the kinetics of the Na+/H+ exchanger in rat renal brush-border membranes (1997) Can J Physiol Pharmacol, 75, pp. 1226-1231 
504 |a Kinsella, J., Freiberg, J., Sacktor, B., Glucocorticoid activation of Na+/H+ exchange in renal brush border vesicles: Kinetic effects (1985) Am J Physiol, 27, pp. 233-239 
504 |a Damasco, M., Malnic, G., Effects of corticosteroids on proximal tubular acidification in the rat (1987) Miner Electrolyte Metab, 13, pp. 26-32 
504 |a Doucet, A., Katz, A., Mineralocorticoid receptors along the nephron: [3H]aldosterone binding in rat tubules (1981) Am J Physiol, 241, pp. 605-611 
504 |a Farman, N., Bonvalet, J., Aldosterone binding in isolated tubules. III. Autoradiography along the rat nepron (1983) Am J Physiol, 245, pp. 606-614 
504 |a Vandewalle, A., Farman, N., Bencsath, P., Bonvalet, J., Aldosterone binding along the rabbit nephron: An autoradiographic study on isolated tubules (1981) Am J Physiol, 240, pp. 172-179 
504 |a Hulter, H., Licht, J., Glynn, R., Sebastian, A., Renal acidosis in mineralocorticoid deficiency is not dependent on NaCl depletion or hyperkalemia (1979) Am J Physiol, 236, pp. 283-294 
504 |a Zimmermann, E., Smyrl, R., Crutchlow, V., Suppression of pituitary-adrenal response to stress with physiological plasma levels of corticosterone in the female rat (1972) Neuroendocrinology, 10, pp. 246-256 
504 |a Damasco, M., Vallverdú, R., Ceńal, J., Effects of 18-hydroxycorticosterone and of aldosterone on acid-base parameters in the arterial blood of adrenalectomized rats (1983) Acta Physiol Latinoam, 33, pp. 283-292 
504 |a Dubrovsky, A., Nair, R., Byers, M., Levine, D., Renal net acid excretion in the adrenalectomized rat (1981) Kidney Int, 19, pp. 516-528 
504 |a Lowry, O., Rosebrough, N., Farr, A., Randall, R., Protein measurement with the Folin phenol reagent (1951) J Biol Chem, 193, pp. 265-275 
504 |a Pecci, A., Cozza, E., Devlin, M., Endothelin-1 stimulation of aldosterone and zona glomerulosa ouabain-sensitive sodium/potassium-ATPase (1994) J Steroid Biochem Mol Biol, 50, pp. 49-53 
504 |a Warnock, D., Reenstra, W., Yee, V., Na+/H+ antiporter of brush border vesicles: Studies with acridine orange uptake (1982) Am J Physiol, 242, pp. 733-739 
504 |a Baum, M., Moe, O., Gentry, D., Alpern, R., Effect of glucocorticoids on renal cortical NHE-3 and NHE-1 mRNA (1994) Am J Physiol (Renal, Fluid and Electrolyte Physiology), 267, pp. 437-442 
504 |a Yip, K., Tse, C., McDonough, A., Marsh, D., Redistribution of Na+/H+ exchanger isoform NHE3 in proximal tubules induced by acute and chronic hypertension (1998) Am J Physiol, 275, pp. 565-575 
504 |a Otsu, K., Kinsella, J., Heller, P., Froehlich, J., Dependence of the Na+/H+ exchange in the pre-steady state (1993) J Biol Chem, 268, pp. 3184-3193 
504 |a Gupta, N., Tarif, S., Seikaly, M., Baum, M., Role of glucocorticoids in the maturation of the rat renal Na+/H+ antiporter (NHE3) (2001) Kidney Int, 60, pp. 173-181 
504 |a Chow, C., Regulation and intracellular localization of the epithelial isoform of the Na+/H+ exchangers NHE2 and NHE3 (1999) Clin Invest Med, 22, pp. 195-206 
504 |a Wiederholt, M., Stolte, H., Brecht, J., Hierholzer, K., Mikropunktions-untersuchungen über den einfluss von aldosteron, cortison und dexamethason auf die renale natriumresorption adrenalektomierter ratten (1966) Pflügers Archiv, 292, pp. 316-333 
504 |a Hierholzer, K., Stolte, H., The proximal and distal tubular action of adrenal steroids on Na+ reabsorption (1969) Nephron, 6, pp. 188-204 
504 |a Malnic, G., Ansaldo, M., Lantos, C., Damasco, M., Regulation of nephron acidification by corticosteroids (1997) Braz J Med Biol Res, 30, pp. 479-486 
504 |a Donowitz, M., De La Horra, C., Calonge, M., In birds, NHE2 is major brush-border Na+/H+ exchanger in colon and is increased by low-NaCl diet (1998) Am J Physiol, 274, pp. 1659-1669 
504 |a Wehling, M., Käsmayr, J., Theisen, K., Rapid effects of mineralocorticoids on sodium-proton exchanger: Genomic or nongenomic pathway? (1991) Am J Physiol, 260, pp. 719-726 
504 |a Wehling, M., Bauer, M., Ulsenheimer, A., Nongenomic effects of aldosterone on intracellular pH in vascular smooth muscle cells (1996) Biochem Biophys Res Commun, 223, pp. 181-186 
504 |a Schneider, M., Ulsenheimer, A., Christ, M., Wehling, M., Nongenomic effects of aldosterone on intracellular calcium in porcine endothelial cells (1997) Am J Physiol, 272, pp. 616-620 
504 |a Gekle, M., Silbernagl, S., Wunsch, S., Non-genomic action of the mineralocorticoid aldosterone on cytosolic sodium in cultured kidney cells (1998) J Physiol (Lond), 511, pp. 255-263 
504 |a Winter, D., Schneider, M., O'Sullivan, G., Rapid effects of aldosterone on sodium-hydrogen exchange in isolated colonic crypts (1999) J Membr Biol, 170, pp. 17-26 
520 3 |a Background: Previously we showed that corticosterone and aldosterone increased proton fluxes in proximal tubule, by micropuncture and stationary microperfusion. Since the Na+/H+ exchanger is responsible for the main proximal proton secretion, we have now evaluated the effects aldosterone on Na+/H+ exchange activity in brush border vesicles. In order to evaluate the mechanism of action of glucocorticoids and mineralocorticoids, we studied the comparative effects of corticosterone and aldosterone on the abundance of NHE3 and NHE2 isoforms. Material/Methods: We isolated renal brush border vesicles from rats by differential centrifugation in sham-operated, adrenalectomized, and adrenalectomized-aldosterone treated (ADX + aldosterone) animals. We measured the kinetics of H+ transport in response to increasing concentrations of Sodium Gluconate by fluorimetry using acridine orange. For Na+/H+ exchanger abundance we used Western blot analysis of brush border proteins in the above groups and in adrenalectomized-corticosterone treated rats. Results: The Vmax in adrenalectomized animals was 22,162±1828 fluorescence units/min; in sham animals, 37,020±2722; and in ADX + aldosterone, 42,344±3044 (p<0.01 adrenalectomized vs others). No differences in Km were observed. Adrenalectomy decreased NHE3 abundance over Sham by 32% without modifying NHE2. Corticosterone-replacement enhanced NHE3 abundance by 76% and failed to increase NHE2. Aldosterone enhanced NHE2 abundance by 75% and did not increase NHE3. Conclusion: Mineralocorticoids enhance Na+/H+ exchange activity by increasing NHE2 abundance; glucocorticoids, by increasing NHE3 abundance.  |l eng 
593 |a Department of Biochemistry, FCEN, U.B.A, Buenos Aires, Argentina 
593 |a Instituto de Ciencias Biomedicas, USP, Sao Paulo, Brazil 
593 |a CONICET, Buenos Aires, Argentina 
593 |a Dep. Quimica Biologica, Pabellón 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
690 1 0 |a ALDOSTERONE 
690 1 0 |a GLUCOCORTICOIDS 
690 1 0 |a H+ TRANSPORT 
690 1 0 |a NHE2 
690 1 0 |a NHE3 
690 1 0 |a ACRIDINE ORANGE 
690 1 0 |a ALDOSTERONE 
690 1 0 |a CORTICOSTEROID 
690 1 0 |a CORTICOSTERONE 
690 1 0 |a GLUCONATE SODIUM 
690 1 0 |a MINERALOCORTICOID 
690 1 0 |a SODIUM PROTON EXCHANGE PROTEIN 
690 1 0 |a ARTICLE 
690 1 0 |a BRUSH BORDER 
690 1 0 |a FLUOROMETRY 
690 1 0 |a KIDNEY PROXIMAL TUBULE 
690 1 0 |a MOLECULAR DYNAMICS 
690 1 0 |a MOLECULAR MECHANICS 
690 1 0 |a PROTON TRANSPORT 
690 1 0 |a RECEPTOR AFFINITY 
690 1 0 |a TRANSPORT KINETICS 
690 1 0 |a UPREGULATION 
690 1 0 |a WESTERN BLOTTING 
690 1 0 |a ADRENALECTOMY 
690 1 0 |a ALDOSTERONE 
690 1 0 |a ANIMALS 
690 1 0 |a ANTI-INFLAMMATORY AGENTS 
690 1 0 |a CORTICOSTERONE 
690 1 0 |a GLUCONATES 
690 1 0 |a KIDNEY TUBULES, PROXIMAL 
690 1 0 |a MALE 
690 1 0 |a MICROVILLI 
690 1 0 |a PROTEIN ISOFORMS 
690 1 0 |a RATS 
690 1 0 |a RATS, SPRAGUE-DAWLEY 
690 1 0 |a SODIUM-HYDROGEN ANTIPORTER 
700 1 |a Igarreta, P. 
700 1 |a Calvo, J.C. 
700 1 |a Reboucas, N.A. 
700 1 |a Damasco, M.C. 
773 0 |d 2003  |g v. 9  |h pp. BR85-BR90  |k n. 2  |p Med. Sci. Monit.  |x 12341010  |t Medical Science Monitor 
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856 4 0 |u https://hdl.handle.net/20.500.12110/paper_12341010_v9_n2_pBR85_Zallocchi  |y Handle 
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