IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine

We report two cases of Japanese men who presented with proteinuria, eosinophilia, hypocomplementemia, and high serum immunoglobulin G4 (IgG4) concentration and were diagnosed with membranous nephropathy associated with IgG4-related tubulointerstitial nephritis on renal biopsy. The typical renal lesi...

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Main Authors: Kana N. Miyata, Hiromi Kihira, Manabu Haneda, Yasuhide Nishio
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Case Reports in Nephrology
Online Access:http://dx.doi.org/10.1155/2014/678538
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author Kana N. Miyata
Hiromi Kihira
Manabu Haneda
Yasuhide Nishio
author_facet Kana N. Miyata
Hiromi Kihira
Manabu Haneda
Yasuhide Nishio
author_sort Kana N. Miyata
collection DOAJ
description We report two cases of Japanese men who presented with proteinuria, eosinophilia, hypocomplementemia, and high serum immunoglobulin G4 (IgG4) concentration and were diagnosed with membranous nephropathy associated with IgG4-related tubulointerstitial nephritis on renal biopsy. The typical renal lesions of IgG4-related disease are tubulointerstitial nephritis, which improves remarkably with steroid therapy, and occasional glomerular changes. In our two cases, renal biopsy revealed IgG4-positive immune complex deposits in glomeruli in a pattern of membranous nephropathy and concurrent tubulointerstitial nephritis with IgG4 plasma cells. In both cases, proteinuria persisted with initial prednisolone treatment and was resolved only after the addition of mizoribine. We report the first two cases in which the combination of prednisolone and mizoribine was effective for treating membranous nephropathy associated with IgG4-related tubulointerstitial nephritis.
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institution Kabale University
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series Case Reports in Nephrology
spelling doaj-art-d995f25ef1904b6e9e6c273b51de6dc22025-08-20T03:24:16ZengWileyCase Reports in Nephrology2090-66412090-665X2014-01-01201410.1155/2014/678538678538IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and MizoribineKana N. Miyata0Hiromi Kihira1Manabu Haneda2Yasuhide Nishio3Division of Nephrology and Hypertension, Harbor-UCLA Medical Center, 1124 W. Carson Street, Torrance, CA 90502, USADivision of Nephrology, Department of Medicine, Tokyo Metropolitan Tama Medical Center, 2-8-29 Musashidai, Fuchu-shi, Tokyo 183-8524, JapanDivision of Nephrology, Department of Medicine, Tokyo Metropolitan Tama Medical Center, 2-8-29 Musashidai, Fuchu-shi, Tokyo 183-8524, JapanDivision of Nephrology, Department of Medicine, Tokyo Metropolitan Tama Medical Center, 2-8-29 Musashidai, Fuchu-shi, Tokyo 183-8524, JapanWe report two cases of Japanese men who presented with proteinuria, eosinophilia, hypocomplementemia, and high serum immunoglobulin G4 (IgG4) concentration and were diagnosed with membranous nephropathy associated with IgG4-related tubulointerstitial nephritis on renal biopsy. The typical renal lesions of IgG4-related disease are tubulointerstitial nephritis, which improves remarkably with steroid therapy, and occasional glomerular changes. In our two cases, renal biopsy revealed IgG4-positive immune complex deposits in glomeruli in a pattern of membranous nephropathy and concurrent tubulointerstitial nephritis with IgG4 plasma cells. In both cases, proteinuria persisted with initial prednisolone treatment and was resolved only after the addition of mizoribine. We report the first two cases in which the combination of prednisolone and mizoribine was effective for treating membranous nephropathy associated with IgG4-related tubulointerstitial nephritis.http://dx.doi.org/10.1155/2014/678538
spellingShingle Kana N. Miyata
Hiromi Kihira
Manabu Haneda
Yasuhide Nishio
IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine
Case Reports in Nephrology
title IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine
title_full IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine
title_fullStr IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine
title_full_unstemmed IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine
title_short IgG4-Related Tubulointerstitial Nephritis Associated with Membranous Nephropathy in Two Patients: Remission after Administering a Combination of Steroid and Mizoribine
title_sort igg4 related tubulointerstitial nephritis associated with membranous nephropathy in two patients remission after administering a combination of steroid and mizoribine
url http://dx.doi.org/10.1155/2014/678538
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