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Identification of the sperm antigen interacting with antibodies in serum from an infertile woman
Author(s) -
Haneji Tatsuji,
Koide S. S.
Publication year - 2009
Publication title -
andrologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.633
H-Index - 59
eISSN - 1439-0272
pISSN - 0303-4569
DOI - 10.1111/j.1439-0272.1990.tb02032.x
Subject(s) - sperm , antibody , antigen , affinity chromatography , infertility , chemistry , semen , agglutination (biology) , andrology , biology , microbiology and biotechnology , immunology , biochemistry , medicine , genetics , pregnancy , enzyme
Summary Serum (IS) obtained from an infertile woman induced head‐to‐head agglutination of human sperm. The immunoglobulin G (IgG) fraction of the IS was prepared by ammonium sulfate fractionation and DEAE cellulose chromatography. The IgG localized to the post‐acrosomal region of the sperm, determined by indirect immunofluorescence and interacted with a human sperm protein with an estimated Mr of 80 kDa, determined by immunoblotting. The identity of the interacting sperm antigen was verified by isolating the 80 kDa sperm protein by affinity chromatography. The present results suggest that the anti‐80 kDa antibodies may be responsible for the infertility. Zusammenfassung Serum, das von einer unfruchtbaren Frau erhalten wurde, erzeugte Kopf‐Kopf‐Agglutination der Spermatozoen. Das reaktive Spermaantigen wurde mit Hilfe der Affinitätschromatographie gereinigt und als ein Protein von ungefáhr 80 kDa (Mr) identifiziert. Das 80 kDa Protein wurde mittels Immunfluoreszenz in der post‐akrosomalen Region der Spermatozoen lokalisiert. Es ist möglich, daß die 80 kDa‐Antikörper mit bestimmten Fällen von Unfruchtbarkeit assoziiert sind.

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