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Methotrexate hepatotoxicity.

A J Barak, D J Tuma, H C Beckenhauer

    Journal of the American College of Nutrition
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Methotrexate, used for psoriasis and cancer, can cause liver damage. This study suggests methotrexate-induced hepatotoxicity may stem from its impact on methionine biosynthesis and methylation processes.

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    Area of Science:

    • Pharmacology
    • Hepatology
    • Biochemistry

    Background:

    • Methotrexate (MTX) is a folate metabolism inhibitor used to treat psoriasis and neoplastic diseases.
    • MTX use is limited by acute and chronic toxicities, notably hepatotoxicity, which can lead to cirrhosis and death.
    • The mechanism underlying MTX-induced liver damage remains unknown.

    Purpose of the Study:

    • To investigate the potential mechanism of methotrexate-induced hepatotoxicity.
    • To explore the role of nutritional effects, specifically on methionine biosynthesis and methylation, in MTX liver damage.

    Main Methods:

    • The study analyzed results from three laboratory investigations.
    • Focus was placed on the nutritional effects of methotrexate.
    • The research considered the impact of MTX on methionine biosynthesis and methylation processes.

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    Main Results:

    • Evidence suggests a possible link between MTX hepatotoxicity and its effects on methionine biosynthesis.
    • The drug's influence on methylation processes may also contribute to liver damage.
    • Findings support the hypothesis that MTX interferes with essential methylation pathways.

    Conclusions:

    • Methotrexate-induced liver damage may be mediated by disruptions in methionine biosynthesis and methylation.
    • Methylating agents crucial for methionine synthesis are implicated in MTX hepatotoxicity.
    • Further research into these biochemical pathways is warranted to understand and mitigate MTX liver toxicity.