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Blood perfusion of the kidney of Lophius piscatorius L.: II. Influence of perfusion pressure on urine volume

Published online by Cambridge University Press:  11 May 2009

L. Brull  and
Y. Cuypers
L. Brull
Affiliation:
From the Plymouth Laboratory, and Institut de Clinique et Policlinique Médicales, Liège, Belgium
Y. Cuypers
Affiliation:
From the Plymouth Laboratory, and Institut de Clinique et Policlinique Médicales, Liège, Belgium
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Summary

The urine secretion of the kidneys of Lophius piscatorius perfused with heparinized Lophius blood is very sensitive to perfusion pressure below a critical level, above which it becomes insensitive. The response of the urine flow to pressure takes the form of an exponential curve.

The blood flow through the kidneys, while rising slowly at pressures of about 20–30 mm of water, responds arithmetically to pressure above such levels.

At present it is impossible to make out whether pressure or blood flow has the greatest influence on secretion.

Water secretion in the aglomerular kidney is an active process. The oxygen consumption of the Lophius kidney is unmeasurably low, yet remains a possible factor in secretion.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 33 , Issue 3 , October 1954 , pp. 733 - 738
Copyright
Copyright © Marine Biological Association of the United Kingdom 1954

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References

REFERENCES

Bieter, R. W., 1931. The secretion pressure of the aglomerular kidney. Amer. J. Physiol., Vol. 97, pp. 66–8.CrossRefGoogle Scholar
Brull, L., Nizet, E. & Verney, E. B., 1953. Blood perfusion of the kidney of Lophius piscatorius L. J. Mar. biol. Ass. U.K., Vol. 32, pp. 329–36.CrossRefGoogle Scholar
Brull, L. & Nizet, E., 1953. Blood and urine constituents of Lophius piscatorius L. J. Mar. biol. Ass. U.K., Vol. 32, pp. 321–8.CrossRefGoogle Scholar
Nizet, E., (In the Press). Quelques aspects de l'anatomie du rein du Lophius piscatorius. Pubbl. Staz. zool. Napoli.Google Scholar