Zusammenfassung
Bei Ratten wurde durch Glucoseinfusionen die Glucosekonzentration die Glucosekonzentration im Plasma erhöht und Glomerulumfiltrat sowie renale Glucoseresorption gemessen. Die Glucoseschwelle, d.h. die Glucosekonzentration im Plasma, von welcher ab es zu einer deutlichen Glucoseausscheidung im Endharn kommt, lag bei den Ratten mit etwa 520 mg-% im Vergleich zu Hund und Mensch relativ hoch. Bei Glucosekonzentrationen oberhalb der Schwelle waren spontane Schwankungen des Glomerulumfiltrates zwischen 0,08–1,18 ml/min·g Niere von proportionalen Änderungen der Glucoseresorptionsrate (0,9–13,1 mg/min·g Niere) begleitet. Bei drei adrenalektomierten Tieren wurden gleiche Resultate erhoben. Zu jeder Filtrationsrate gehörte eine eigene, bestimmte maximale Glucosetransportrate. Diese Beziehung wird im Hinblick auf das geläufige Konzept einer konstanten maximalen Transportkapazität des Tubulus für Glucose diskutiert.
Summary
Glomerular filtration rate (inulin clearance) and glucose reabsorption rate were measured in anesthetized rats at plasma glucose concentrations from 1.9 to 28.85 mg/ml. Glucose reabsorption rate (T G mg/min per g kidney) was dependent upon GFR (ml/min per g kidney) both above and below the plasma glucose concentration at which significant amounts of glucose appear in the urine (at about 5.2 mg/ml). Similar results were obtained in 3 adrenalectomized rats. As a consequence of the dependence ofT G upon GFR, any one filtration rate is characterized by a specific maximum glucose reabsorption rate. This is discussed in relation to the concept of a uniqueTm G .
References
Boylan, J. W., andD. Antkowiak: Renal tubular reabsorption of glucose in Squalus acanthias. Bull. Mt. Desert Island Biol. Lab.6, 2 (1966).
Bradley, S. E., J. H. Laragh, H. O. Wheeler, M. MacDowell, andJ. Oliver: Correlation of structure and function in the handling of glucose by the nephrons of the canine kidney. J. clin. Invest.40, 1113 (1961).
Brunner, F. P., F. C. Rector jr., andD. W. Seldin: Mechanism of glomerulotubular balance. II. Regulation of proximal tubular reabsorption by tubular volume, as studied by stopped-flow microperfusion. J. clin. Invest.45, 603 (1966).
Dantzler, W. H.: Renal response to chickens to infusion of hyperosmotic sodium chloride solution. Amer. J. Physiol.210, 640 (1966).
Deetjen, P., andJ. W. Boylan: Glucose reabsorption by single mammalian nephron perfused in situ. Fed. Proc.24, 582 (1965).
—— —— Factors influencing glucose reabsorption in single perfused rat nephron. Fed. Proc.25, 392 (1966).
Dempster, W. J., M. G. Eggleton, andS. Shuster: The effect of hypertonic infusions on glomerular filtration rate and glucose reabsorption in the kidney of the dog. J. Physiol. (Lond.)132, 213 (1956).
Eggleton, M. G., andS. Shuster: Excretion of glucose by the cat's kidney. J. Physiol. (Lond.)122, 54 P (1953).
Forster, R. P.: The nature of the glucose reabsorptive process in the frog renal tubule. Evidence for intermittency of glomerular function in the intact animal. J. cell. comp. Physiol.20, 55 (1942).
—— An examination of some factors which alter glomerular activity in the rabbit kidney. Amer. J. Physiol.150, 523 (1947).
Führ, J., J. Kaczmarczyk, andC. D. Krüttgen: Eine einfache colorimetrische Methode zur Inulin-Bestimmung für Nieren-Clearance-Untersuchungen bei Stoffwechselgesunden und Diabetikern. Klin. Wschr.33, 729 (1955).
Gertz, K. H., J. A. Mangos, G. Braun, andH. D. Pagel: On the glomerular tubular balance in the rat kidney. Pflügers Arch. ges. Physiol.285, 360 (1965).
Handley, C. A., R. B. Sigafoos, andM. La Forge: Proportional changes in renal tubular reabsorption of dextrose and excretion of p-aminohippurate with changes in glomerular filtration. Amer. J. Physiol.159, 175 (1949).
Harvey, A. M., andR. L. Malvin: Comparison of creatinine and inulin clearances in male and female rats. Amer. J. Physiol.209, 849 (1965).
Hilger, H. H., J. D. Klümper, andK. J. Ullrich: Wasserrückresorption und Ionentransport durch die Sammelrohrzellen der Säugetierniere. Pflügers Arch. ges. Physiol.267, 218 (1958).
Kolmer, J. A.: Clinical diagnosis by laboratory examination, 3rd. ed., p. 58. New York: Appleton—Century Crofts, Inc. 1961.
Miller, J. H.: Changes in renal tubular transport maxima associated with renal vasodilation. J. appl. Physiol.6, 129 (1953).
Mudge, G. H., andJ. V. Taggart: Effect of acetate on the renal excretion of p-aminohippurate in the dog. Amer. J. Physiol.161, 191 (1950).
Ni, T.-G., andP. B. Rehberg: On the mechanism of sugar excretion. I. Glucose. Biochem. J.24, 1039 (1930).
Peters, G.: Glomeruläre Clearancen, p-Aminohippursäure-Clearance und Diurese bei verschiedenen Diureseformen der nicht narkotisierten Ratte. Naunyn-Schmiedebergs Arch. exp. Path. Pharmak.235, 113 (1959).
Pitesky, I., andJ. H. Last: Effects of seasonal heat stress on glomerular and tubular functions in the dog. Amer. J. Physiol.164, 497 (1951).
Radford, E. P., jr.: Factors modifying water metabolism in rats fed dry diets. Amer. J. Physiol.196, 1098 (1959).
Rector, F. C., jr.,F. P. Brunner, andD. W. Seldin: Mechanism of glomerulotubular balance. I. Effect of aortic constriction and elevated ureteropelvic pressure on glomerular filtration rate, fractional reabsorption, transit time, and tubular size in the proximal tubule of the rat. J. clin. Invest.45, 590 (1966).
Renschler, H.: Der Einfluß der Nierenfunktion auf die Glukose-Ausscheidung Gesunder. Habilitationsschrift, S. 99, Heidelberg 1965.
Richards, A. N., andC. F. Schmidt: A description of glomerular circulation in the frog's kidney and observations concerning the action of adrenalin and various other substances upon it. Amer. J. Physiol.71, 178 (1924).
Shannon, J. A., S. Farber, andL. Troast: The measurement of glucoseT m in the normal dog. Amer. J. Physiol.133, 752 (1941).
——, andS. Fisher: The renal tubular reabsorption of glucose in the normal dog. Amer. J. Physiol.122, 765 (1938).
Smith, H. W.: The Kidney, p. 83, 85, 568. New York: Oxford 1951.
——, andS. E. Bradley: The application of saturation methods to the study of glomerular and tubular function in the human kidney. J. Mt Sinai Hosp.10, 59 (1943).
Spector, W. S., ed.: Handbook of Biological Data, p. 174. Philadelphia: W. B. Saunders 1956.
Steinhausen, M.: Eine Methode zur Differenzierung proximaler und distaler Tubuli der Nierenrinde von Ratten in vivo und ihre Anwendung zur Bestimmung tubulärer Strömungsgeschwindigkeiten. Pflügers Arch. ges. Physiol.277, 23 (1963).
Sumner, J. B.: A more specific reagent for the determination of sugar in urine. J. biol. Chem.65, 393 (1925).
Thompson, D. D., M. J. Barrett, andR. F. Pitts: Significance of glomerular perfusion in relation to variability of filtration rate. Amer. J. Physiol.167, 546 (1951).
Ullrich, K. J., andA. Hampel: Eine einfache Mikrokuvette für Monochromator Zeiss und Beckman Modell DU. Pflügers Arch. ges. Physiol.268, 177 (1958).
Walker, A. M., andJ. A. Reisinger: Quantitative studies of the composition of glomerular urine. IX. The concentration of reducing substances in glomerular urine from frogs and necturi determined by an ultramicroadaptation of the method ofSumner. Observations on the action of phlorphizin. J. biol. Chem.101, 223 (1933).
Wirz, H.: Untersuchungen über die Nierenfunktion bei adrenalektomierten Katzen. Helv. physiol. pharmacol. Acta3, 589 (1945).
——, andP. A. Bott: Potassium and reducing substances in proximal tubule fluid of the rat kidney. Proc. Soc. exp. Biol. (N. Y.)87, 405 (1954).
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This study was supported (in part) by a PHS General Research Support Grant and by the Western New York Chapter of the National Kidney Disease Foundation.
Visiting Research Professor of Medicine, Dr.Henry C. andBertha H. Buswell Fellow.
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van Liew, J.B., Deetjen, P. & Boylan, J.W. Glucose reabsorption in the rat kidney. Pflügers Arch 295, 232–244 (1967). https://doi.org/10.1007/BF01844103
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DOI: https://doi.org/10.1007/BF01844103