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The Hematotoxic Effects of 6-hydroxy-trans,trans-2,4-hexadienal, a Reactive Metabolite of Trans,trans-Muconaldehyde, in CD-1 Mice

Z Zhang, F Schafer, H Schoenfeld, K Cooper, R Snyder, B D Goldstein, G Witz

Toxicol Appl Pharmacol. 1995 Jun;132(2):213-9.

PMID: 7785050

Abstract:

6-Hydroxy-trans,trans-2,4-hexadienal (CHO-M-OH) is a metabolite of trans,trans-muconaldehyde (muconaldehyde or MUC), a microsomal hematotoxic ring-opened metabolite of benzene. In the present study, the toxicity of CHO-M-OH was examined. In order to assess potential toxic effects of CHO-M-OH on the maturation of erythroid cells in the bone marrow, 10-week-old male CD-1 mice were administered CHO-M-OH intraperitoneally and 59Fe incorporation into erythrocytes was measured. The uptake of 59Fe by erythroid cells was significantly inhibited at doses of 20, 25, and 30 mg/kg. There was no inhibition of 59Fe incorporation at a dose of 15 mg/kg. In other hematotoxicity studies, bone marrow cellularity, peripheral blood cells, and sulfhydryl contents in bone marrow cells were examined in mice administered CHO-M-OH intraperitoneally. An increase in the white blood cell count was observed in mice treated with 5 mg/kg/day for 16 consecutive days, while bone marrow cellularity and red blood cell parameters were not changed. Administration of 10 mg/kg/day for 16 consecutive days caused a significant decrease in sulfhydryls of bone marrow cells but no changes in bone marrow cellularity and peripheral blood parameters compared with controls. At a dose of 25 mg/kg/day for 4 days, there was a significant decrease in nucleated bone marrow cells. The white blood cell count, mainly lymphocytes, also significantly decreased. Our results indicate that CHO-M-OH is a hematotoxin in mice and conceivably could play a role in benzene toxicity.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP142836 trans,trans-2,4-Hexadienal trans,trans-2,4-Hexadienal 142-83-6 Price
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