title: A case of relapse of C-ANCA-associated glomerulonephritis in post-transplant patients.
abstract: We experienced a case of relapse of proteinase 3-specific antineutrophil cytoplasmic autoantibody (C-ANCA)-associated rapid progressive glomerulonephritis (RPGN) in a patient after renal transplantation. A 19-yr-old man, who underwent a living donor kidney transplantation, presented a rapid renal function deterioration along with a sign of infection. Initially he was treated as acute rejection, but renal function did not improve. Renal biopsy revealed crescentic glomerulonephritis, and C-ANCA titer was 12 EU/mL, resulting in the diagnosis of C-ANCA-associated RPGN. He was treated with three consecutive methylprednisolone pulses twice in addition to the basal immunosuppressive medications (cyclosporine A and mizoribine), then his renal function improved to normal. Bearing the possibility of recurrence of glomerulonephritis in mind, we re-evaluated the nature and disease course of renal failure of original kidney. He experienced a rapid deterioration of renal function in 1992, and eventually CAPD was started in 1992. His serum in 1992 revealed high titer of C-ANCA (24 EU/mL), and renal biopsy performed in 1992 showed a crescentic glomerulonephritis. Taken together, we diagnosed this event as a relapse of C-ANCA-associated GN. Lessons from our experience are: 1) steroid pulse and high-dose corticosteroid therapy may be useful for the treatment of relapse of C-ANCA-associated GN patients after renal transplantation; 2) the possibility of a relapse of C-ANCA-associated GN following renal transplantation has to be kept in mind, especially when infection precedes the deterioration of allograft kidney function.
authors.affiliation: Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Suita, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Oka
authors.forename: T
authors.initials: T
authors.lastname: Moriyama
authors.forename: M
authors.initials: M
authors.lastname: Izumi
authors.forename: T
authors.initials: T
authors.lastname: Sugiura
authors.forename: H
authors.initials: H
authors.lastname: Nakamura
authors.forename: K
authors.initials: K
authors.lastname: Nagatoya
authors.forename: K
authors.initials: K
authors.lastname: Toki
authors.forename: M
authors.initials: M
authors.lastname: Kyo
authors.forename: Y
authors.initials: Y
authors.lastname: Kokado
authors.forename: S
authors.initials: S
authors.lastname: Takahara
authors.forename: A
authors.initials: A
authors.lastname: Okuyama
authors.forename: E
authors.initials: E
authors.lastname: Imai
authors.forename: M
authors.initials: M
authors.lastname: Hori
mesh_terms: D000328:Adult; D019268:Antibodies, Antineutrophil Cytoplasmic / Q000276:immunology*; D005921:Glomerulonephritis / Q000188:drug therapy / Q000276:immunology* / Q000473:pathology; D006801:Humans; D016030:Kidney Transplantation / Q000276:immunology* / Q000473:pathology; D008297:Male; D012008:Recurrence
chemical_list: D019268:Antibodies, Antineutrophil Cytoplasmic