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Related Experiment Videos

Complement levels in normal and inflamed aqueous humor.

B J Mondino, H Rao

    Investigative Ophthalmology & Visual Science
    |March 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

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    Complement proteins C2, C6, C7, and Factor B are present in aqueous humor, increasing during inflammation. IgG and complement levels rise proportionally in inflamed eyes.

    Area of Science:

    • Ophthalmology
    • Immunology
    • Complement System Biology

    Background:

    • The aqueous humor's complement system composition is not fully understood.
    • Inflammation can alter the ocular immune environment.

    Purpose of the Study:

    • To quantify complement components (C2, C6, C7, Factor B) and IgG in normal and inflamed aqueous humor.
    • To compare aqueous humor complement levels to serum levels.
    • To investigate the relationship between IgG and complement in ocular inflammation.

    Main Methods:

    • Hemolytic assays were used to measure functional C2, C6, and C7.
    • Radial immunodiffusion quantified Factor B and IgG.
    • Samples were obtained from patients with normal and inflamed aqueous humor.

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    Main Results:

    • Normal aqueous humor contains C2, C6, and C7, but at lower concentrations than serum.
    • Mean levels of C2, C6, C7, and Factor B were elevated in inflamed aqueous humor compared to normal.
    • Factor B was notably absent in normal aqueous humor but detected in inflamed samples.
    • IgG and complement components increased proportionally during inflammation.

    Conclusions:

    • The complement system is active in the aqueous humor, with elevated levels during inflammation.
    • Factor B, an alternative pathway component, is specifically associated with ocular inflammation.
    • IgG and complement levels appear to increase in parallel during anterior chamber inflammation.