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Einfluß von Chloroquin auf die Hexachlorbenzol-induzierte Porphyrie

Untersuchungen in Haut, Leber und Urin

Influence of chloroquine on the hexachlorobenzene-induced porphyria

Investigations in the skin, liver, and urine

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Summary

Rats were fed with a diet containing hexachlorobenzene (HCB) for about 60 days. At this time the porphyria was manifest as shown by significantly elevated porphyrins. Thereafter, chloroquine (CQ) was additionally given over a period of at least 6 weeks. At the end of the experiment the urinary porphyrin excretion and the porphyrin content in liver and skin were diminished in HCB-CQ-treated animals by about 50% compared to the HCB controls. The relative porphyrin distribution pattern was not influenced by CQ. In a further investigation the prophylactic effect of CQ could be demonstrated. Rats given CQ simultanously from the beginning of the HCB feeding showed a significantly delayed onset of porphyria.

It is concluded from our results that CQ does not only form complexes with porphyrins during the treatment of the HCB porphyria. We rather assume an effect of CQ on the metabolism of iron.

Zusammenfassung

Bei weiblichen Ratten wurde durch Applikation von 0,05% Hexachlorbenzol (HCB)-Futterzusatz eine Porphyrie erzeugt. Anschließend wurden die Tiere über maximal 6 Wochen zusätzlich mit Chloroquin (CQ) (50 mg/kg/Tag) behandelt und mit entsprechenden Kontrollgruppen verglichen.

CQ bewirkte eine etwa 50%ige Senkung der Porphyrinausscheidung im Urin und des Porphyringehaltes in Leber und Haut gegenüber HCB-Kontrollen. Das relative Porphyrinverteilungsmuster wurde durch CQ nicht beeinflußt.

In einem weiteren Experiment erhielten Ratten von Versuchsbeginn an simultane Gaben von CQ und HCB. Die CQ-Prophylaxe bewirkte eine signifikant verzögerte Porphyriemanifestation.

Auf Grund der Ergebnisse schließen wir, daß bei der HCB-bedingten Porphyrie der Ratte der Wirkmechanimus des CQ nicht nur auf der Bildung eliminierungsfähiger CQ-Porphyrin-Komplexe beruht. Es wird vielmehr angenommen, daß durch CQ eine Beeinflussung des Eisenstoffwechsels vorliegt, die die Porphyrinstoffwechselstörung abschwächt.

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Vizethum, W., Bolsen, K., Simon, K. et al. Einfluß von Chloroquin auf die Hexachlorbenzol-induzierte Porphyrie. Arch Dermatol Res 267, 123–130 (1980). https://doi.org/10.1007/BF00569098

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  • DOI: https://doi.org/10.1007/BF00569098

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