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  • The 14-day repeated dose liver micronucleus test with METHAPYRILENE HYDROCHLORIDE (cas 135-23-9) using young adult rats
  • Add time:10/01/2019         Source:infona.pl

    The repeated dose liver micronucleus (RDLMN) assay using young adult rats has the potential to detect genotoxic hepatocarcinogens that can be integrated into a general toxicity study. The assay methods were thoroughly validated by 19 Japanese facilities. METHAPYRILENE HYDROCHLORIDE (cas 135-23-9) (MP), known to be a non-genotoxic hepatocarcinogen, was examined in the present study. MP was dosed orally at 10, 30 and 100mg/kg/day to 6-week-old male Crl:CD (SD) rats daily for 14 days. Treatment with MP resulted in an increase in micronucleated hepatocytes (MNHEPs) with a dosage of only 100mg/kg/day. At this dose level, cytotoxicity followed by regenerative cell growth was noted in the liver. These findings suggest that MP may induce clastogenic effects indirectly on the liver or hepatotoxicity of MP followed by regeneration may cause increase in spontaneous incidence of MNHEPs.

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    Prev:Application of Voltammetric Method of Total Chromium Determination in the Presence of Cupferron (cas 135-20-6) for Selective Determination of Cr(VI) in Water Samples
    Next: Clastogenicity of METHAPYRILENE HYDROCHLORIDE (cas 135-23-9) in cultured Chinese hamster cells)

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