Effects of a highly toxic coplanar polychlorinated biphenyl, 3,3',4,4',5-pentachlorobiphenyl on intermediary metabolism: reduced triose phosphate content in rat liver cytosol.

Y. Ishii, H. Kato, M. Hatsumura, T. Ishida, Noritaka Ariyoshi, H. Yamada, K. Oguri

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The effects of a highly toxic coplanar polychlorinated biphenyl, 3,3',4,4',5-pentachlorobiphenyl (PenCB), on triose phosphate metabolizing enzymes were studied. Male Wistar rats received 25 mg/kg PenCB, i.p. At this dose the compound provokes a wasting syndrome. The activity of triose phosphate metabolizing enzymes, glyceraldehyde-3-phosphate dehydrogenase, triose phosphate isomerase, glycerokinase, transaldolase and transketolase were significantly reduced by PenCB treatment to 50%, 60%, 50%, 70% and 40% of free-fed controls, respectively. An inhibition study with pyrazol, a specific inhibitor of alcohol dehydrogenase (ADH), showed that ADH makes about a 30% contribution to the formation of glycerol-3-phosphate from glyceraldehyde-3-phosphate. Our current study revealed that PenCB suppresses ADH at the protein expression level. The reduced formation of glycerol-3-phosphate from glyceraldehyde dehydrogenase by PenCB could be due to the suppression of ADH. The triose phosphate content in the liver cytosol of PenCB-treated rats was significantly lower than in free-fed controls. The suppression of triose phosphate metabolism could be a cause of the wasting syndrome provoked by highly toxic coplanar PCB.

Original languageEnglish
Pages (from-to)190-200
Number of pages11
JournalFukuoka Acta Medica
Volume92
Issue number5
Publication statusPublished - May 2001
Externally publishedYes

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3,4,5,3',4'-pentachlorobiphenyl
Trioses
Alcohol Dehydrogenase
Poisons
Polychlorinated Biphenyls
Cytosol
Phosphates
Wasting Syndrome
Liver
Transaldolase
Glycerol Kinase
Glyceraldehyde 3-Phosphate
Transketolase
Triose-Phosphate Isomerase
Glyceraldehyde
Glycerolphosphate Dehydrogenase
Glyceraldehyde-3-Phosphate Dehydrogenases
Enzymes
Wistar Rats

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Effects of a highly toxic coplanar polychlorinated biphenyl, 3,3',4,4',5-pentachlorobiphenyl on intermediary metabolism : reduced triose phosphate content in rat liver cytosol. / Ishii, Y.; Kato, H.; Hatsumura, M.; Ishida, T.; Ariyoshi, Noritaka; Yamada, H.; Oguri, K.

In: Fukuoka Acta Medica, Vol. 92, No. 5, 05.2001, p. 190-200.

Research output: Contribution to journalArticle

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