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Biologische Wirkungen des Liquor cerebrospinalis und ihre Veränderungen bei erhöhter Hirnaktivität

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Zusammenfassung

Die biologische Wirkung des Liquor cerebrospinalis des Kaninchens wurde am M. rectus abdominis sowie am isolierten Herzen des Frosches untersucht. In Übereinstimmung mit Feldberg u. Mitarb. (1956/57) findet sich im Liquor ein Faktor, welcher zwar am M. rectus abdominis keine Kontraktionen auslöst, aber den Muskel gegenüber Acetylcholin sensibilisiert. Entsprechend konnten wir nachweisen, daß der Liquor cerebrospinalis auch das isolierte Herz gegenüber der inotropen und chronotropen Wirkung von Acetylcholin sensibilisiert. Schließlich übt der Liquor eine positiv-inotrope Wirkung auf das isolierte Herz aus; diese ist nicht durch die biogenen Amine Adrenalin, Noradrenalin, Serotonin und Histamin bedingt. Während einer erhöhten Hirnaktivität infolge Reizung des aufsteigenden Retikularsystemes nimmt diese positivinotrope Wirkung signifikant zu. Diese Wirkung könnte auf einem Stoffwechselmetaboliten des Gehirns beruhen.

Summary

The biological activity of rabbit's cerebrospinal fluid was tested on both, the M. rectus abdominis and the isolated frog heart. According to Feldberg and cowoker (1956/57) the cerebrospinal fluid contains a biological factor, which sensitises the rectus muscle to acetylcholine, but does not elicit itself contractions. Similarly we demonstrated that the cerebrospinal fluid sensitises the isolated heart to the inotropic and chronotropic effect of acetylcholine. Furthermore it has a positive inotropic action on this isolated organ; this effect is not related to biogenic amines such as adrenaline, noradrenaline, serotonine or histamine. The described positive inotropic effect on the heart is significantly increased by cerebrospinal fluid from aroused rabbits, following stimulation of the reticular activating system. This effect is presumably related to some brain metabolite.

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Mit 8 Textabbildungen

Dozent an der Medizinischen Akademie Warschau.

Wir möchten der Direktion der wissenschaftlichen Abteilung der Hoffmann-La Roche A. G., Basel, sowie dem Ciba Fonds, Basel, unseren herzlichsten Dank für die Unterstützung dieser Arbeit aussprechen.

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Romanowski, W., Krupp, P. & Monnier, M. Biologische Wirkungen des Liquor cerebrospinalis und ihre Veränderungen bei erhöhter Hirnaktivität. Naunyn - Schmiedebergs Arch 247, 214–228 (1964). https://doi.org/10.1007/BF00245965

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  • DOI: https://doi.org/10.1007/BF00245965

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