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Related Experiment Videos

Host-mediated transformation: metronidazole.

V F Garry, R L Nelson

    Mutation Research
    |April 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Metronidazole exposure during pregnancy may transfer genotoxic risks to the fetus. This study found that metronidazole treatment in hamsters led to potential genotoxic effects in embryonic cells, causing tumor formation in some cases.

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    Area of Science:

    • Toxicology
    • Developmental Biology
    • Oncology

    Background:

    • Metronidazole is a widely used antibiotic.
    • Concerns exist regarding its potential genotoxic effects, especially during fetal development.

    Purpose of the Study:

    • To evaluate the genotoxic potential of metronidazole in the fetus using a hamster embryo host-mediated assay.
    • To assess the in vitro and in vivo effects of metronidazole on embryonic cells.

    Main Methods:

    • Pregnant hamsters received metronidazole at varying doses.
    • Embryonic cells were analyzed in vitro for transformation and soft agar growth.
    • Cells were implanted into nude mice and immunosuppressed hamsters to test for tumor formation.

    Main Results:

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    • Metronidazole-treated embryonic cells showed transformation and neoplastic potential comparable to positive controls.
    • Fibrosarcoma developed in nude mice from cells treated with 300 mg/kg metronidazole.
    • Tumorigenicity was not observed in irradiated hamsters or at other metronidazole dose levels.

    Conclusions:

    • Metronidazole demonstrates the capacity for vertical transmission of potential genotoxic effects to the fetus.
    • The findings highlight the need for caution when prescribing metronidazole during pregnancy.