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Phenylbutazone and chromosomal damage

S Walker, A Price Evans, P A Benn

    Annals of the Rheumatic Diseases
    |October 1, 1975
    PubMed
    Summary
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    Phenylbutazone (PBZ) and oxyphenbutazone (OPB) do not significantly increase chromosomal damage in rheumatoid arthritis patients. Lymphocyte analysis showed no increased damage in current, past, or never-exposed individuals.

    Area of Science:

    • Rheumatology
    • Toxicology
    • Genetics

    Background:

    • Rheumatoid arthritis (RA) is a chronic autoimmune disease.
    • Phenylbutazone (PBZ) and oxyphenbutazone (OPB) are nonsteroidal anti-inflammatory drugs (NSAIDs) historically used for RA.
    • Concerns exist regarding potential genotoxicity of NSAIDs.

    Purpose of the Study:

    • To investigate the potential genotoxic effects of phenylbutazone (PBZ) and oxyphenbutazone (OPB) on lymphocytes in patients with rheumatoid arthritis (RA).
    • To determine if exposure to PBZ and/or OPB correlates with increased chromosomal damage.

    Main Methods:

    • Analysis of chromosomal damage in lymphocytes from 44 paired rheumatoid arthritis patients.
    • Comparison between patients currently exposed to PBZ/OPB, previously exposed (1-5 years prior), and never exposed controls.

    Related Experiment Videos

  • Assessment of chromosomal aberrations in lymphocyte samples.

    • Main Results:

    • No statistically significant increase in chromosomal damage was observed in lymphocytes of patients exposed to PBZ and/or OPB.
    • No significant difference in chromosomal damage levels was found between patients currently on medication, those with a history of exposure, and never-exposed individuals.
    • The study suggests a lack of genotoxic effect at the chromosomal level for PBZ and OPB in the studied RA patient cohort.

    Conclusions:

    • Phenylbutazone (PBZ) and oxyphenbutazone (OPB) do not appear to induce significant chromosomal damage in lymphocytes of rheumatoid arthritis patients.
    • The findings indicate that these NSAIDs are not associated with increased genotoxicity in this patient population.
    • Further research may explore other potential long-term effects or different mechanisms of toxicity.