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[Recurrent meningococcal meningitis associated with complement C6 deficiency (author's transl)]

M F Avril, J Lebas, B Autran

    La Nouvelle Presse Medicale
    |October 17, 1981
    PubMed
    Summary

    Recurrent meningococcal meningitis in a young woman was linked to a hereditary deficiency in the C6 complement component. Early detection via total hemolytic complement testing can identify individuals benefiting from meningococcal immunization.

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    Area of Science:

    • Immunology
    • Genetics
    • Infectious Diseases

    Background:

    • Recurrent meningococcal meningitis poses a significant health risk.
    • Complement system deficiencies are known to increase susceptibility to infections.
    • The C6 component is crucial for the membrane attack complex formation.

    Observation:

    • A young West-Indian woman presented with recurrent episodes of meningococcal meningitis.
    • Hereditary deficiency of the C6 complement component was identified in this patient.
    • Previous reports documented similar associations in eight other patients, all of Black ethnicity.

    Findings:

    • A direct association exists between hereditary C6 deficiency and recurrent meningococcal meningitis.
    • This deficiency impairs the complement system's ability to combat Neisseria meningitidis.

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  • The observed pattern suggests a potential genetic predisposition within certain populations.

    • Implications:

    • Measuring total hemolytic complement levels can serve as a screening tool.
    • Early identification of individuals with C6 deficiency is vital.
    • Prophylactic immunization strategies can be targeted to high-risk individuals, reducing meningitis recurrence.