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Resources » Paper

Yates JA et al. (1985) Acta Trop "Activation of the alternative complement pathway in normal human serum by Loa loa and Brugia malayi infective stage larvae."

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  • Comments on Yates JA et al. (1985) Acta Trop "Activation of the alternative complement pathway in normal human serum by Loa loa and Brugia malayi infective stage larvae." (0)

  • Overview

    PMID:
    2862778
    Status:
    Publication type:
    Journal_article
    WormBase ID:
    WBPaper00056468

    Yates JA, Higashi GI, Lowichik A, Orihel TC, Lowrie RC, & Eberhard ML (1985). Activation of the alternative complement pathway in normal human serum by Loa loa and Brugia malayi infective stage larvae. Acta Trop, 42, 157-63.

    Infective stage larvae (L3) of Loa loa and Brugia malayi upon in vitro incubation with normal human serum activated the alternative complement pathway. C3 conversion products were detected on larval cuticles by eosinophil adherence and by immunofluorescence with C3c antiserum. No evidence for cuticle binding of IgG, IgA, IgM, Clq, or C4 was found by immunofluorescence. L3-induced C3 activation was inhibited by 10 mM EDTA but unaffected by 10 mM Mg++-EGTA. Human sera deficient in C2, C4, or C6 incubated with L3 resulted in C3 activation. However, sera treated with zymosan or heated for 1 h, 56 degrees C were unreactive with L3. Immunoelectrophoresis of fresh serum exposed to L3 for 1 h at 37 degrees C showed C3 cleavage products. The results indicate that these nematode L3 activate the alternative complement cascade via cuticular surface components. Larval viability was unaffected by complement activation or by adherence of eosinophils.


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