The presence of cytoplasmic antineutrophil cytoplasmic antibodies (C-ANCA) in the course of subacute bacterial endocarditis with glomerular involvement, coincidence or association?

Clin Nephrol. 1998 Jan;49(1):15-8.


Antineutrophil cytoplasmic antibodies positivity with cytoplasmic pattern (C-ANCA) and proteinase-3 (PR-3) specificity was found in two patients with both subacute bacterial endocarditis (SBE) and glomerular involvement. Renal biopsy showed membranoproliferative glomerulonephritis in one case and focal segmental glomerulonephritis in the second case. Immunofluorescence study showed granular immune deposits in both cases evocating immune complex glomerulonephritis. Renal and biological manifestations disappeared with clinical improvement secondary to antibiotherapy. Physicians have to consider the possible occurrence of such C-PR-3 ANCA, claimed to be specific markers for Wegener's granulomatosis, in infectious diseases such as SBE. Hence we focus on the necessity of performing a renal biopsy with light microscopy and immunofluorescence studies in all patients with ANCA associated glomerular disease.

Publication types

  • Case Reports

MeSH terms

  • Antibodies, Antineutrophil Cytoplasmic / analysis*
  • Autoantigens / immunology
  • Endocarditis, Subacute Bacterial / complications
  • Endocarditis, Subacute Bacterial / immunology*
  • Glomerulonephritis / etiology
  • Glomerulonephritis / immunology*
  • Glomerulonephritis, Membranous / immunology
  • Humans
  • Male
  • Middle Aged
  • Myeloblastin
  • Serine Endopeptidases / immunology


  • Antibodies, Antineutrophil Cytoplasmic
  • Autoantigens
  • Serine Endopeptidases
  • Myeloblastin