Kinetics of germanium dioxide in rats

Chuang Hao Lin, Tsan Ju Chen, Yueh Ling Hsieh, Shiuh Jen Jiang, Shun Sheng Chen

Research output: Contribution to journalJournal Article peer-review

16 Scopus citations

Abstract

The kinetics of germanium dioxide (GeO2) in single dose and repeated exposures were investigated in male Wistar rats. In the single dose GeO2 (100 mg/kg BW, p.o.) exposure study, values of several kinetic parameters were shown as follows, a maximum concentration in serum of 15.5±0.7 μg/ml (mean±S.E.M.), an absorption half-life of 0.7±0.1 h (mean±S.E.M.), an elimination half-life of 2.3±0.5 h (mean±S.E.M.), a distribution of the central compartment V(p) (3.1±0.3 l, mean±S.E.M.), and the apparent volume of distribution of the tissue compartment V(t) (8.5±2.9 l, mean±S.E.M.). In the repeated exposure study, 730±92 mg GeO2 in 1 l double-distilled H2O (=100 mg/kg/day) was given daily to rats for 4 weeks (p.o.). After sacrificing the rats, the analysis of tissue distribution showed that GeO2 was accumulated in some important organs or tissues in the body, especially the peripheral nerves and kidney. These results indicate that GeO2 could be absorbed rapidly but had a longer elimination half-life in rats. In addition, GeO2 was accumulated especially in the nerves and kidney following long-term exposure. Copyright (C) 1999 Elsevier Science Ireland Ltd.

Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalToxicology
Volume132
Issue number2-3
DOIs
StatePublished - 15 02 1999
Externally publishedYes

Keywords

  • Germanium
  • Kinetics
  • Tissue distribution

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