Advertisement

Das Verhalten der Hautdurchblutung bei Hypothalamuskühlung an der wachen Katze

  • F. J. Krüger
  • H. W. Kundt
  • H. Hensel
  • K. Brück
Article

Summary

1. In the nonanaesthetized cat the hypothalamus was cooled by means of chronically implanted thermodes of 1 mm in diameter. The ear blood flow was continuously recorded by heated thermocouples.

2. At indifferent room temperatures (23 to 25° C), hypothalamic cooling caused a marked vasoconstriction, the amount of which was dependent on the degree of cooling.

3. Prolonged cooling for 90 min led to a vasoconstriction of the same duration.

4. Hypothalamic cooling was followed by a rise in rectal temperature and, in some cases, by shivering.

5. At high room temperatures (33 to 37° C), causing a vasodilatation in the ear, the constrictor effect of cooling the hypothalamus was inhibited.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literatur

  1. 1.
    Andersson, B.: Acta physiol. scand. 41, 90 (1957).Google Scholar
  2. 2.
    Barbour, H. G.: Naunyn-Schmiedeberg's Arch. exp. Path. Pharmak. 70, 1 (1912).Google Scholar
  3. 3.
    Donhoffer, S., A. Haug-László, I. Járai u. G. Szegvári: Pflügers Arch. ges. Physiol. 268, 273 (1959).Google Scholar
  4. 4.
    Hensel, H.: Mensch und warmblütige Tiere. In Precht, H., J. Christophersen und H. Hensel: Temperatur und Leben, S. 369 ff. Berlin, Göttingen, Heidelberg: Springer 1955.Google Scholar
  5. 5.
    Kundt, H. W., K. Brück u. H. Hensel: Pflügers Arch. ges. Physiol. 264, 97 (1957).Google Scholar
  6. 6.
    Kundt, H. W., K. Brück u. H. Hensel: Naturwissenschaften 44, 496 (1957).Google Scholar
  7. 7.
    Prince, A. L., u. L. J. Hahn: Amer. J. Physiol. 46, 416 (1918).Google Scholar
  8. 8.
    Ström, G.: Acta physiol. scand. 20, Suppl. 70, 47 (1950).Google Scholar
  9. 9.
    Ström, G.: Acta physiol. scand. 21, 271 (1950).Google Scholar

Copyright information

© Springer-Verlag 1959

Authors and Affiliations

  • F. J. Krüger
    • 1
  • H. W. Kundt
    • 1
  • H. Hensel
    • 1
  • K. Brück
    • 1
  1. 1.Aus dem Physiologischen Institut der Universität Marburg/LahnGermany

Personalised recommendations