Journal Article

The short- and long-term outcomes of membranous nephropathy treated with intravenous immune globulin therapy

Hitoshi Yokoyama, Satoshi Goshima, Takashi Wada, Masayoshi Takaeda, Kengo Furuichi, Ken-ichi Kobayashi, Hiroshi Kida and the Kanazawa Study Group for Renal Diseases and Hypertension

in Nephrology Dialysis Transplantation

Published on behalf of European Renal Association - European Dialysis and Transplant Assoc

Volume 14, issue 10, pages 2379-2386
Published in print October 1999 | ISSN: 0931-0509
Published online October 1999 | e-ISSN: 1460-2385 | DOI: http://dx.doi.org/10.1093/ndt/14.10.2379
The short- and long-term outcomes of membranous nephropathy treated with intravenous immune globulin therapy

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Background. A considerable diversity in prognosis is seen with membranous nephropathy (MN). A recent report showed beneficial effects of immune globulin (Glb) therapy in Heymann nephritis, a rat model of MN. However, the early and late clinical effects of Glb in human MN have remained unclear.

Methods. We studied retrospectively 86 patients with primary MN from 1965 to 1988 who were followed for at least 5 years, or until renal or actual death. Thirty patients were non-randomly treated with 1–3 courses of intravenous immune globulin, 5–10 g/day (100–150 mg/kg/day) for 6 consecutive days. Based on electron microscopic (EM) findings, the patients were divided into two subtypes, i.e. homogeneous type with synchronous electron-dense deposits, and heterogeneous type with various stages of dense deposits, due to their different clinical outcomes.

Results. There was no difference in the initial clinicopathological states between Glb (n=30) and non-Glb group (n=56) (70 vs 68% in nephrotic state; 37 vs 39% in female, 50 vs 52% in homogeneous type, 50 vs 48% in heterogeneous type respectively). For the homogeneous type, at 6 months post-treatment, Glb therapy had induced earlier remission as compared to non-Glb treatments with corticosteroid alone or together with cyclophosphamide (57 vs 10% respectively, P=0.006). However, there was no significant difference in the early therapeutic effect for the heterogeneous type (13% for Glb vs 5% for non-Glb in remission after 6 months), or in the final outcome for all groups (18% for Glb vs 10% for non-Glb in renal death after 15 years). No adverse effects were recorded during or after Glb therapy.

Conclusions. Our results suggest that short-term relatively low-dose intravenous Glb therapy has a beneficial effect in the earlier induction of remission in a subgroup of MN, the homogeneous type with EM findings of synchronous electron-dense deposits, but does not alter the long-term outcome of human MN.

Keywords: membranous nephropathy; immune globulin therapy; complement; electron-dense deposits

Journal Article.  4051 words.  Illustrated.

Subjects: Nephrology

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