Absence of anti-idiotypic antibodies in IVIG preparations to autoantibodies of rare autoimmune diseases

Ilan Krause, Shoshana Hacham, Boris Gilburd, Maya Damianovitch, Miri Blank, Yehuda Shoenfeld

Research output: Contribution to journalArticlepeer-review

Abstract

Intravenous immunoglobulins (IVIG) were found to contain anti-idiotypic antibodies against autoantibodies of various autoimmune diseases. We examined commercial IVIG preparations, from three different manufacturers, for the presence of autoantibodies and anti-idiotypic antibodies of two rare autoimmune diseases - primary biliary cirrhosis [anti-pyruvate dehydrogenase (PDH) antibodies] and Goodpasture's syndrome (anti-NC1 antibodies). We used ELISA studies as well as immunoblotting and anti-PDH enzyme activity for the detection of anti-PDH antibodies. ELISA and immunofluorescence studies were used for the detection of anti-NC1 antibodies. The presence of antiidiotypic activity against anti-PDH antibodies was evaluated using inhibition ELISA studies, employing affinity-purified F(ab)2-anti-PDH fragments on Sepharose-bound IVIG [F(ab)2]. Anti-anti-NC1 activity was evaluated employing inhibition ELISA and immunofluorescence studies. The commercial IVIG preparations that were examined did not contain anti-PDH or anti-NC1 antibodies nor anti-idiotypic activity against these autoantibodies. We conclude that commercial IVIG may lack anti-idiotypic activity against rare autoantibodies.

Original languageEnglish
Pages (from-to)229-235
Number of pages7
JournalClinical Immunology and Immunopathology
Volume77
Issue number3
DOIs
StatePublished - Dec 1995
Externally publishedYes

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