Journal
CLINICAL AND EXPERIMENTAL IMMUNOLOGY
Volume 138, Issue 3, Pages 517-520Publisher
WILEY
DOI: 10.1111/j.1365-2249.2004.02634.x
Keywords
allergy; innate immunity; L-ficolin; mannan-binding lectin (MBL); respiratory infections
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The lectin pathway of complement activation is used by a collectin, mannan-binding lectin (MBL), and two ficolins, L-ficolin and H-ficolin, to opsonize microorganisms for phagocytosis. We published evidence recently that MBL insufficiency is associated with recurrent respiratory infections in childhood. We have now measured serum L-ficolin in 313 respiratory infection patients and 74 healthy control children. L-ficolin concentrations below the lower limit of the control group were found in 6% of the patients (P < 0.02) and were associated most strongly with children having co-existing atopic disorders (11%; P = 0.002). We suggest that L-ficolin may have a role in protection from microorganisms complicating allergic disease.
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