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Different susceptibilities of chick embryo liver cells in vitro to aflatoxin, actinomycin D, and mitomycin C

Die unterschiedliche Empfindlichkeit von Zellen der embryonalen Hühnerleber in vitro gegenüber Aflatoxin, Actinomycin D und Mitomycin C

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Zusammenfassung

Bei Anwesenheit von Aflatoxin erwiesen sich die Parenchymzellen der embryonalen Hühnerleber empfindlicher als die mesenchymalen Zellen; die toxische Wirkung der Substanz drückte sich in einer mittels Autoradiographie festgestellten Behinderung der RNS-Synthese aus, die von Protein- und DNS-Synthese gefolgt war. Im Gegensatz zuAflatoxin wirkte Actinomycin D auf die Mesenchymzellen stärker als auf die Parenchymzellen. Durch Mitomycin C wurde die RNS-Synthese beider Zelltypen anfänglich nicht gestört, doch war später eine mäßige Wirkung auf die RNS- und Protein-Synthese der Parenchymzellen und weiterhin auch der Mesenchymzellen nachweisbar.

Summary

In the presence of aflatoxin, parenchymal cells of chick embryo liver were found to be more susceptible than mesenchymal cells, the toxic effect being an inhibition of RNA synthesis followed by protein and DNA synthesis studied by autoradiography. Actinomycin D, contrary to aflatoxin, acted on the mesenchymal cells more strongly than on the parenchymal cells. RNA synthesis of both cell types was not disturbed initially by mitomycin C, though later there was a moderate action on RNA and protein synthesis of parenchymal cells and subsequently also on those mesenchymal cells.

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The authors wish to thank Prof. T. Arai of the Institute of Food Microbiology for providing the aflatoxin and actinomycin D used in these studies.

This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Welfare.

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Terao, K., Miyaki, K. Different susceptibilities of chick embryo liver cells in vitro to aflatoxin, actinomycin D, and mitomycin C. Z Krebs-forsch 71, 199–207 (1968). https://doi.org/10.1007/BF00524747

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  • DOI: https://doi.org/10.1007/BF00524747

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