Summary
Praziquantel (EMBAY 8440, Droncit®) is a new type of acylated isoquinoline-pyrazine. A single oral or subcutaneous dose of the compound is reliably effective against juvenile and adult cestodes in mice and rats.
For the first time, with praziquantel a compound is available that is also effective on cestodes in the bile-duct.
Using Hymenolepis nana in mice we were able to show that age, sex, strain and intensity of infestation of the host have no influence on the efficacy.
The onset of the effect of praziquantel in vivo is rapid. Within 10 min the parasites were immobilized and contracted and excreted within a few hours with the faeces.
Zusammenfassung
Praziquantel (EMBAY 8440, Droncit®) ist ein neuer Typ eines acylierten Pyrazino-isochinolin. Eine einmalige orale oder subkutane Gabe ist zuverlässig wirksam gegen jugendliche und adulte Cestoden in Mäusen und Ratten.
Mit Praziquantel steht erstmals ein Mittel zur Verfügung, das auch gegen Gallengang-Cestoden wirksam ist.
In Versuchen mit Hymenolepis nana in Mäusen konnte gezeigt werden, daß Alter, Geschlecht, Stamm und Infektionsstärke des Wirtes die Wirksamkeit von Praziquantel nicht beeinflussen.
Die Wirkung von Praziquantel auf den Parasiten tritt in vivo sehr schnell ein. Innerhalb von 10 min sind die Parasiten bewegungslos und kontrahiert und werden innerhalb weniger Stunden mit den Faeces ausgeschieden.
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Thomas, H., Gönnert, R. The efficacy of praziquantel against cestodes in animals. Z. F. Parasitenkunde 52, 117–127 (1977). https://doi.org/10.1007/BF00389898
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DOI: https://doi.org/10.1007/BF00389898