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  • Title: Properdin deficiency in a family with fulminant meningococcal infections.
    Author: Sjöholm AG, Braconier JH, Söderström C.
    Journal: Clin Exp Immunol; 1982 Nov; 50(2):291-7. PubMed ID: 7151327.
    Abstract:
    Three males in a large family showed a selective deficiency of properdin (P). One of the P deficient individuals died from a fulminant infection with Neisseria meningitidis group C. The family history revealed three previous cases of similar infections with a fatal outcome. The deficiency did not appear to be associated with repeated bacterial infections. The pattern of inheritance suggested an X-linked mode of transmittance. However, heterozygous carriers were not clearly distinguished in the family. P deficient serum supported immune haemolysis in a normal fashion. Alternative pathway functions, such as the activation of C3 by inulin or zymosan, lysis of guinea-pig erythrocytes in agarose gel and opsonization of endotoxin coated oil particles, were grossly impaired in P deficient serum while efficient C3 activation was produced by addition of cobra venom factor.
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