Related Experiment Videos

Methotrexate inhibits the leukotriene B4 induced intraepidermal accumulation of polymorphonuclear leukocytes

P C van de Kerkhof, F W Bauer, R M Maassen-de Grood

    The British Journal of Dermatology
    |September 1, 1985
    PubMed

    Insights

    Methotrexate treatment significantly inhibits polymorphonuclear leukocyte (PMN) infiltration into the epidermis in psoriasis patients. Untreated psoriasis patients showed no difference in PMN infiltration compared to healthy controls.

    Area of Science:

    • Dermatology
    • Immunology
    • Pharmacology

    Background:

    • Psoriasis is a chronic inflammatory skin condition characterized by epidermal hyperplasia and immune cell infiltration.
    • Polymorphonuclear leukocytes (PMNs) play a role in the inflammatory process of psoriasis.
    • Leukotriene B4 (LTB4) is a potent chemoattractant for PMNs.

    Purpose of the Study:

    • To investigate the effect of methotrexate on PMN infiltration into the epidermis in psoriatic skin.
    • To compare PMN infiltration in methotrexate-treated psoriatic patients, untreated psoriatic patients, and normal controls.

    Main Methods:

    • Topical application of leukotriene B4 to the skin.
    • Assessment of PMN penetration into the epidermis.
    • Comparison of skin samples from three groups: methotrexate-treated psoriatic patients, untreated psoriatic patients, and normal controls.

    Main Results:

    • Methotrexate treatment significantly inhibited PMN infiltration into the epidermis.
    • No significant difference in PMN infiltration was observed between untreated psoriatic patients and normal controls.

    Conclusions:

    • Methotrexate demonstrates an inhibitory effect on PMN infiltration in psoriatic skin.
    • The findings suggest a mechanism by which methotrexate may exert its therapeutic effects in psoriasis by modulating leukocyte migration.

    Related Concept Videos