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Related Experiment Videos

Lung function in adolescents receiving high-dose methotrexate.

M A Wall, M E Wohl, N Jaffe

    Pediatrics
    |May 1, 1979
    PubMed
    Summary
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    High-dose methotrexate (MTX) did not cause significant pulmonary function decline in adolescents with osteogenic sarcoma. This study found no dose-related lung toxicity from MTX in this patient group.

    Area of Science:

    • Oncology
    • Pulmonology
    • Pharmacology

    Background:

    • Methotrexate (MTX) is suspected to cause interstitial pneumonitis and fibrosis.
    • The exact mechanism of MTX-induced lung toxicity remains unclear.
    • This study investigated the relationship between MTX dosage and pulmonary function changes.

    Observation:

    • Pulmonary function tests were conducted on 38 adolescents receiving high-dose MTX for osteogenic sarcoma.
    • Patients were grouped based on the timing of pulmonary function assessments relative to MTX therapy.
    • Total MTX doses ranged up to 256 gm/sq m.

    Findings:

    • No consistent decrease in pulmonary function was observed across the study groups.
    • One patient developed a mild restrictive defect and reduced diffusing capacity, unrelated to MTX dose.

    Related Experiment Videos

  • High-dose MTX, under this protocol, did not demonstrate a dose-related negative impact on pulmonary function.

    • Implications:

    • The findings suggest that MTX, when administered at high doses to young patients with osteogenic sarcoma, may not be dose-dependently linked to significant pulmonary toxicity.
    • Further research may clarify the specific factors contributing to rare instances of MTX-associated lung issues.
    • This study provides valuable data for risk assessment and patient management in osteosarcoma treatment protocols involving MTX.