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Related Experiment Videos

Complement activation in Brazilian pemphigus foliaceus.

I T de Messias, J Santamaria, R Ragiotto

    Clinical and Experimental Dermatology
    |January 1, 1989
    PubMed
    Summary
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    Brazilian pemphigus foliaceus, an autoimmune skin disease, shows complement system activation during active phases. This indicates involvement of both classical and alternative complement pathways in the disease process.

    Area of Science:

    • Immunodermatology
    • Autoimmune diseases
    • Complement system biology

    Background:

    • Brazilian pemphigus foliaceus is an autoimmune blistering skin disease with high incidence in specific regions.
    • The precise immunological mechanisms underlying disease pathogenesis remain under investigation.

    Purpose of the Study:

    • To investigate the role of the complement system in active Brazilian pemphigus foliaceus.
    • To determine which complement pathways are activated during the disease course.

    Main Methods:

    • Rocket immunoelectrophoresis was used to measure complement fragments (C4d, Ba) in patient plasma.
    • Standard complement assays (CH50, C3, C4) and immune complex measurements were also performed.

    Main Results:

    Related Experiment Videos

    • Increased levels of C4d and Ba indicated complement activation via both classical and alternative pathways.
    • Standard assays and immune complex levels did not reveal significant complement activation.
    • Complement activation peaked during the most active disease phase.

    Conclusions:

    • The classical and alternative complement pathways are activated in Brazilian pemphigus foliaceus.
    • Complement activation correlates with disease activity, suggesting a role in pathogenesis.
    • Sensitive assays are crucial for detecting complement activation in this condition.