Effect of co-planar polychlorinated biphenyl on the hepatic glutathione peroxidase redox system in rats and guinea pigs

M. Hori, N. Ariyoshi, H. Yamada, K. Oguri

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The effect of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) on hepatic glutathione peroxidase (GPx) redox system was studied in vivo in rats and guinea pigs. PCB 126 treatment caused significant reduction of Se-dependent and -non-dependent GPx activity in rats. In agreement with this, the content of glutathione (GSH) and the activities of GSH reductase (GR) and gamma-glutamyl transpeptidase (gamma-GTP) were also decreased in this species. On the contrary, guinea pig liver Se-non-dependent GPx activity was significantly enhanced by PCB 126 treatment, while no effect on Se-dependent activity was observed. Neither the content of GSH nor the enzyme activities responsible for GSH supply in guinea pig liver was affected by PCB 126. These result suggested that the damage on GPx redox system is, at least, one of mechanisms by which co-planar PCB induces the toxicity in rats. However, in guinea pigs, this is not the case, and different mechanism from the damage on active oxygen quenching system is likely to be involved.

Original languageEnglish
Pages (from-to)144-148
Number of pages5
JournalFukuoka igaku zasshi = Hukuoka acta medica
Volume88
Issue number5
Publication statusPublished - May 1997
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)

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