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Indoxyl sulfate, a uremic toxin, is biotransformed from indoxyl-β-d-glucoside (indican) in rats

  • Yu Chi Hou
  • , Shang Yuan Tsai
  • , Shu Ling Chan
  • , Shih Ying Yang
  • , Pei Dawn Lee Chao*
  • *Corresponding author for this work
  • China Medical University Taichung

Research output: Contribution to journal › Journal Article › peer-review

4 Scopus citations

Abstract

Indican (Indoxyl-β-d-glucoside) is present in many Chinese herbs such as Isatis indigotica, Clerodendrum crytophyllum, Glehnia littoralis, Polygonum tinctorium and P. perfoliatum. This study aims to investigate whether indoxyl sulfate, a uremic toxin, would be biotransformed from indican in rats. Indican was administered intravenously and orally to Sprague-Dawley rats. The blood samples were withdrawn via cardiopuncture at specific time points and the serum concentrations of indican and indoxyl sulfate were assayed by HPLC method. The results showed that indican was rapidly and extensively metabolized to indoxyl sulfate either given intravenously or orally. Indoxyl sulfate showed markedly higher systemic exposure than indican. Because indoxyl sulfate is a harmful uremic toxin, we suggest that the content of indican in the aforementioned medicinal plants be quantitated and well controlled to ensure the safety for clinical use.

Original languageEnglish
Pages (from-to)440-444
Number of pages5
JournalToxicon
Volume52
Issue number3
DOIs
StatePublished - 01 09 2008
Externally publishedYes

Keywords

  • Indican
  • Indoxyl sulfate
  • Indoxyl-β-d-glucoside
  • Metabolism
  • Pharmacokinetics
  • Uremic toxin

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