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Tetracyclines and lead metabolism in rats

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Abstract

The effects of oral, parenteral pretreatment, and posttreatment with tetracyclines on lead metabolism were studied in 7 to 9-week-old female rats.

In animals receiving different doses of tetracyclines orally (30 to 600 mg/kg daily) for 12 days the retention of an oral dose of 203Pb applied on the 4th day of the treatment was, at the end of the experiment, the same as in the controls.

In animals receiving daily intraperitoneal doses of tetracyclines (18.8 to 75 mg/kg for 12 days) the retention of an intraperitoneal dose of 203Pb applied on the 4th day of the treatment was, at the end of the experiment, the same or higher than in the untreated group.

This indicates that tetracyclines are not likely to be useful in the prevention or treatment of lead poisoning.

Zusammenfassung

Der Effekt der oralen oder parenteralen Vor- oder Nachbehandlung mit Tetracyklin auf den Blei-Metabolismus wurde bei 7 bis 9 Wochen alten weiblichen Albinoratten untersucht. Bei Tieren, welche über 12 Tage verschiedene Dosen von Tetracyklin oral (30–600 mg/kg täglich) bekamen, war die Retention einer oralen Dosis von 203Pb, welche am 4. Tage der Behandlung verabreicht wurde, am Ende des Experimentes die gleiche wie in der Kontrolle. Bei Ratten, welche täglich intraperitoneale Dosen von Tetracyklin (18,8–75 mg/kg) über 12 Tage erhielten, war die Retention einer am 4. Tage der Behandlung intraperitoneal injizierten Dosis von 203Pb am Ende des Versuches gleich hoch oder sogar höher als in der nichtbehandelten Gruppe.

Dies deutet offenbar darauf hin, daß Tetracyklin für Vorbeugung oder Behandlung der Bleivergiftung nicht nützlich ist.

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Dekanić, D., Maljković, T. & Kostial, K. Tetracyclines and lead metabolism in rats. Arch. Toxicol. 33, 169–172 (1975). https://doi.org/10.1007/BF00353242

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  • DOI: https://doi.org/10.1007/BF00353242

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