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Leiner's disease associated with diminished third component of complement.

M J Sonea1, B E Moroz, E R Reece

  • 1Department of Dermatology, McGill University, Montreal, Quebec, Canada.

Pediatric Dermatology
|August 1, 1987
PubMed
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Leiner's disease in an infant was linked to low levels of the third component of complement (C3). This suggests C3 is crucial for the body's ability to fight yeast infections.

Area of Science:

  • Immunology
  • Pediatrics
  • Clinical Medicine

Background:

  • Leiner's disease is a rare infant disorder characterized by seborrheic dermatitis, diarrhea, and failure to thrive.
  • Impaired immune function, particularly in combating fungal infections, is a hallmark of this condition.

Observation:

  • A 6-week-old female infant presented with symptoms consistent with Leiner's disease, including persistent diarrhea, wasting, and generalized seborrheic dermatitis.
  • The infant exhibited defective yeast opsonization, indicating a compromised ability to neutralize yeast pathogens.
  • Crucially, the infant presented with a significantly diminished level of the third component of complement (C3).

Findings:

  • This case represents the first documented instance of Leiner's disease associated with low C3 levels.

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  • The findings provide strong evidence that the yeast opsonic activity observed in normal human serum is directly dependent on adequate C3 levels.

    • Implications:

    • This study highlights a potential link between complement deficiency, specifically C3, and the pathogenesis of Leiner's disease.
    • Understanding this relationship may lead to improved diagnostic approaches and targeted therapies for infants with immune deficiencies and severe skin and gastrointestinal manifestations.
    • Further research into the role of C3 in immune defense against yeast is warranted.