The in vitro metabolism, macromolecular binding and bacterial mutagenicity of 4 chlorobiphenyl, a model PCB substrate

C. Wyndham, J. Devenish, S. Safe

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

The in vitro metabolism of 4 chlorobiphenyl, a model polychlorinated biphenyl (PCB) substrate, proceeds via an arene oxide intermediate to give the observed in vivo hydroxylated metabolites. The rabbit liver microsomal fraction mediates binding between the PCB and the endogenous microsomal protein and RNA and the major part of the PCB was bound to the light 3S-10S RNA fraction. The lower chlorinated 4 chlorobiphenyl isomer was highly mutagenic to the Salmonella typhimurium strain TA1538 (sensitive to frameshift mutagens) whereas higher chlorinated PCB were only weakly mutagenic.

Original languageEnglish (US)
Pages (from-to)563-570
Number of pages8
JournalResearch Communications in Chemical Pathology and Pharmacology
Volume15
Issue number3
StatePublished - 1976

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Toxicology
  • Pharmacology
  • Pharmacology, Toxicology and Pharmaceutics(all)

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