Antimitochondrial (pyruvate dehydrogenase) antibodies in leprosy

B. Gilburd, L. Ziporen, D. Zharhary, M. Blank, N. Zurgil, M. A. Scheinberg, L. H. Guedes, M. Eric Gershwin, Y. Shoenfeld

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Sera from 69 patients with leprosy but without liver involvement were assayed for the presence of mitochondrial pyruvate dehydrogenase (PDH)-specific autoantibodies by enzyme-linked immunoabsorbent assay (ELISA), immunoblotting using PDH as an antigen and by enzymatic inhibition test. Twenty-seven of the leprosy serum samples (39.1%) were found to react with PDH by ELISA. However, unlike sera from primary biliary cirrhosis (PBC) patients, none of these were able to inhibit the PDH enzymatic activity. By immunoblotting, it was found that only 2 of the 27 positive sera recognized the 74-kD protein of the PDH complex, which is recognized by sera of most PBC patients. The antimitochondrial antibodies in lepra most probably recognize different epitopes than those in PBC. These findings may indicate that anti-PDH autoantibodies in patients with leprosy may arise by polyclonal B cell stimulation and may represent natural anti-PDH autoantibodies.

Original languageEnglish (US)
Pages (from-to)14-19
Number of pages6
JournalJournal of Clinical Immunology
Issue number1
StatePublished - Jan 1994


  • anti-pyruvate dehydrogenase
  • Antimitochondrial antibodies
  • leprosy
  • primary biliary cirrhosis

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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