Trans, trans-muconic acid, an open-chain urinary metabolite of benzene in mice. Quantification by high-pressure liquid chromatography

M. M. Gad-El Karim, V-M Ramanujam, M. S. Legator

Research output: Contribution to journalArticle

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Abstract

1. A sensitive h.p.l.c. method is described which separated urinary metabolites from benzene-treated male CD-1 mice. 2. Phenol, trans, trans-muconic acid and quinol in the 48 h urine accounted, respectively, for 12.8-22.8,1.8-4.7 and 1.5-3.7% of the orally administered single dose of benzene (880, 440 and 220 mg/kg body wt.). Catechol occurred in trace amounts. 3. Ascorbic acid was used to adjust urine pH and increase the extraction efficiency of metabolites, especially muconic acid. It allowed an accurate estimation of quinol by preventing its auto-oxidation. 4. trans, trans-Muconic acid was identified and was unique to benzene as none was detected in urine of mice dosed orally with phenol, catechol or quinol (250, 150 and 200 mg/kg, respectively). 5. The potential existence of a toxic benzene metabolite in the form of an aldehyde precursor of muconic acid in vivo is discussed.

Original languageEnglish (US)
Pages (from-to)211-220
Number of pages10
JournalXenobiotica
Volume15
Issue number3
DOIs
StatePublished - 1985

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High pressure liquid chromatography
Hydroquinones
Metabolites
Benzene
High Pressure Liquid Chromatography
Urine
Phenol
Poisons
Aldehydes
Ascorbic Acid
Oxidation
muconic acid
catechol

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Biochemistry
  • Pharmacology
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Trans, trans-muconic acid, an open-chain urinary metabolite of benzene in mice. Quantification by high-pressure liquid chromatography. / Gad-El Karim, M. M.; Ramanujam, V-M; Legator, M. S.

In: Xenobiotica, Vol. 15, No. 3, 1985, p. 211-220.

Research output: Contribution to journalArticle

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