Induction of Transient Cell Proliferation by Manufactured Gas Plant Residue in B6C3F1 male mice

Harold A. Dunsford, Lunjian Zhu, Stephen Safe

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Fifteen day old B6C3F1 male mice were exposed by intraperitoneal (IP) injection to a Maximally Tolerated Dose of Manufactured Gas Plant (MGP) residue (1:32 dilution in DMSO or 1:8 in com oil), 375 μg total of benzo[alpyrene in DMSO or com oil (CO) or DMSO and CO vehicle alone. On days 2, 4 and 7 post-treatment mice were injected IP with bromodeoxyuridine (BRdU) at a concentration of 50 μg/g of weight 1 hour prior to euthanasia. Immunoperoxidase staining for BRdU was performed and mitotic index (MI) determined for target tissues: bronchial mucosa, forestomach and liver. In MGP-exposed mice, MI in bronchial mucosa was increased 842% with DMSO vehicle and 555% in CO vehicle at day 2, MI was increased in forestomach mucosa by 40% at day 4 and MI was increased in liver by 50% at day 7 compared to controls. Therefore, complex mixtures such as MGP residue are capable of inducing transient cell proliferation.

Original languageEnglish (US)
Pages (from-to)183-189
Number of pages7
JournalPolycyclic Aromatic Compounds
Volume7
Issue number1-3
DOIs
StatePublished - Aug 1 1994

Keywords

  • Bromodeoxyuridine
  • Carcinogens
  • Environment
  • Mice
  • Mixtures
  • Proliferation

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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