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Mori M, Katayama K, Joh K, Ishikawa E, Dohi K. Type VI collagen-related nephropathy. Clin Kidney J 2022; 16:195-196. [PMID: 36726445 PMCID: PMC9871854 DOI: 10.1093/ckj/sfac126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Indexed: 02/04/2023] Open
Affiliation(s)
- Mutsuki Mori
- Department of Nephrology, Saiseikai Matsusaka General Hospital, Matsusaka, Japan,Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
| | | | - Kensuke Joh
- Department of Pathology, Jikei University School of Medicine, Tokyo, Japan
| | - Eiji Ishikawa
- Department of Nephrology, Saiseikai Matsusaka General Hospital, Matsusaka, Japan
| | - Kaoru Dohi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Japan
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Minato M, Murakami T, Takahashi N, Ono H, Nishimura K, Tamaki M, Nagai K, Abe H, Iwano M, Joh K, Doi T. Glucocorticoid-dependent Tubulointerstitial Nephritis with IgM-positive Plasma Cells Presenting with Intracellular Crystalline Inclusions within the Rough Endoplasmic Reticulum. Intern Med 2021; 60:3129-3136. [PMID: 33840699 PMCID: PMC8545643 DOI: 10.2169/internalmedicine.7118-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Tubulointerstitial nephritis (TIN) with IgM-positive plasma cells (IgMPC-TIN) is an autoimmune kidney disease characterized by IgM/CD138-double-positive plasma cell infiltration in the tubulointerstitium. A 50-year-old man developed IgMPC-TIN and presented with crystalline inclusions in the rough endoplasmic reticulum. Intracellular crystal formation is a rare finding in paraprotein-related kidney diseases, but this case showed no pathogenic monoclonal immunoglobulin. Prednisolone (PSL, 30 mg) improved the TIN, but PSL tapering resulted in the recurrence of TIN. Combination therapy with 15 mg PSL and 150 mg mizoribine ultimately stabilized TIN. This case offers original evidence concerning the pathophysiology and treatment strategy of IgMPC-TIN.
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Affiliation(s)
- Masanori Minato
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
| | - Taichi Murakami
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
- Department of Nephrology, Ehime Prefectural Central Hospital, Japan
| | - Naoki Takahashi
- Department of Nephrology, Faculty of Medical Science, University of Fukui, Japan
| | - Hiroyuki Ono
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
| | - Kenji Nishimura
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
| | - Masanori Tamaki
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
| | - Kojiro Nagai
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
| | - Hideharu Abe
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
| | - Masayuki Iwano
- Department of Nephrology, Faculty of Medical Science, University of Fukui, Japan
| | - Kensuke Joh
- Department of Pathology, The Jikei University School of Medicine, Japan
| | - Toshio Doi
- Department of Nephrology, Tokushima University Graduate School of Biomedical Science, Japan
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Steinberg AG, Fox LC, Bender S, Batrouney A, Juneja S, Sirac C, Touchard G, Blombery P, Finlay MJ, Bridoux F, Barbour TD. Proliferative Glomerulonephritis With Fibrils, Monoclonal κ Light Chain, and C3 Deposits. Am J Kidney Dis 2021; 78:459-463. [PMID: 33774080 DOI: 10.1053/j.ajkd.2021.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 01/07/2021] [Indexed: 11/11/2022]
Abstract
There is increasing recognition of monoclonal gammopathy as a cause of proliferative glomerulonephritis (GN), including cases in which glomerular deposition of monoclonal immunoglobulin is demonstrated. Recently, proliferative GN with monoclonal immunoglobulin deposits (PGNMID) has incorporated a light chain variant of the disease (termed PGNMID-LC). Intriguingly, glomerular co-deposition of C3 is found in addition to monotypic light chain, implying complement activation via the alternative pathway (AP). We present a unique case of proliferative GN in a 42-year-old man who presented with nephrotic syndrome and was found to have κ light chain multiple myeloma. Immune staining of the glomerulus was positive only for κ light chain and C3, with the striking appearance of nonamyloid fibrils on electron microscopy. Following clonally targeted therapy for myeloma, the renal clinical abnormalities resolved completely. We present detailed molecular studies for light chain and complement and consider local mechanisms whereby monoclonal κ light chain fibrils may have triggered AP activation within the glomerulus.
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Affiliation(s)
- Adam G Steinberg
- Department of Nephrology, Royal Melbourne Hospital, Parkville, Victoria, Australia.
| | - Lucy C Fox
- Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
| | - Sebastien Bender
- Centre National de la Recherche Scientifique UMR CNRS 7276/INSERM U1262, Université de Limoges, Limoges, France
| | - Ahida Batrouney
- Department of Anatomical Pathology, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Surender Juneja
- Department of Hematology, Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Christophe Sirac
- Centre National de la Recherche Scientifique UMR CNRS 7276/INSERM U1262, Université de Limoges, Limoges, France
| | - Guy Touchard
- Service de Néphrologie, Hémodialyse et Transplantation Rénale, CIC INSERM 1402, Centre de référence pour l'amylose AL et autres maladies par dépôt d'immunoglobulines monoclonales, CHU Poitiers, Poitiers, France
| | - Piers Blombery
- Peter MacCallum Cancer Centre, Parkville, Victoria, Australia
| | - Moira J Finlay
- Department of Anatomical Pathology, Royal Melbourne Hospital, Parkville, Victoria, Australia; Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Melbourne, Victoria, Australia
| | - Frank Bridoux
- Centre National de la Recherche Scientifique UMR CNRS 7276/INSERM U1262, Université de Limoges, Limoges, France; Service de Néphrologie, Hémodialyse et Transplantation Rénale, CIC INSERM 1402, Centre de référence pour l'amylose AL et autres maladies par dépôt d'immunoglobulines monoclonales, CHU Poitiers, Poitiers, France
| | - Thomas D Barbour
- Department of Nephrology, Royal Melbourne Hospital, Parkville, Victoria, Australia; Department of Medicine, Royal Melbourne Hospital, University of Melbourne, Melbourne, Victoria, Australia
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Namba-Hamano T, Hamano T, Imamura R, Yamaguchi Y, Kyo M, Yonishi H, Takahashi A, Kawamura M, Nakazawa S, Kato T, Abe T, Kyakuno M, Takabatake Y, Nonomura N, Isaka Y. Recurrence of Proliferative Glomerulonephritis with Monoclonal Immunoglobulin G Deposits with a Striated Ultrastructure. Nephron Clin Pract 2020; 144 Suppl 1:43-48. [PMID: 33227797 DOI: 10.1159/000512330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/14/2020] [Indexed: 11/19/2022] Open
Abstract
A 64-year-old man with nephrotic syndrome was admitted to another hospital where his renal biopsy revealed membranoproliferative glomerulonephritis (MPGN) with monoclonal immunoglobulin (Ig) G, subclass 1, κ light chain (IgG1κ) deposition on immunofluorescence (IF). Proliferative glomerulonephritis with monoclonal IgG deposits (PGNMID) was suspected due to monoclonal IgG1κ deposits and the absence of hematological abnormalities. However, the typical PGNMID phenotype was not observed by electron microscopy. Instead, an organized and striated muscle-like structure was observed in the subendothelial space. Since a 2-year treatment with immunosuppressants did not improve his proteinuria, a second biopsy was performed at our hospital. It showed an MPGN-like phenotype; however, monoclonal Ig deposits on IF were no longer observed. One year after the second biopsy, he developed ESRD. Thus, he underwent living kidney transplantation from his wife. Allograft biopsy was performed as proteinuria was observed 3 months after transplantation, which again showed an MPGN-like phenotype with monoclonal IgG1κ deposits. The observed electron-dense deposits were similar to those in the native biopsies. Accordingly, the patient was diagnosed with recurrent MPGN. Adding methylprednisolone pulse therapy to conventional immunosuppressants did not improve the patient's renal function or proteinuria. He died of Legionella pneumonia 8 months after transplantation. Considering the patient's histological findings of MPGN with monoclonal IgG1κ deposits and early recurrence of glomerulonephritis after transplantation, he was diagnosed with PGNMID with novel electron-dense deposits.
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Affiliation(s)
- Tomoko Namba-Hamano
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan,
| | - Takayuki Hamano
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan.,Department of Nephrology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Ryoichi Imamura
- Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | - Masahiro Kyo
- Osaka Umeda Iseikai Daialysis Clinic, Osaka, Japan
| | - Hiroaki Yonishi
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Atsushi Takahashi
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masataka Kawamura
- Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigeaki Nakazawa
- Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Taigo Kato
- Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Toyofumi Abe
- Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Miyaji Kyakuno
- Department of Kidney Transplantation, Takatsuki General Hospital, Osaka, Japan
| | - Yoshitsugu Takabatake
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Norio Nonomura
- Department of Urology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Osaka University Graduate School of Medicine, Osaka, Japan
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Yamamoto T, Togawa A, Eguchi M, Ohashi N, Yasuda H, Harita Y, Hattori M, Yamaguchi Y, Ohyama K. Glomerulopathy with distinctive fibrillar deposits but lacking glomerular deposition of type III collagen. CEN Case Rep 2017; 5:163-167. [PMID: 28508970 DOI: 10.1007/s13730-016-0217-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 02/21/2016] [Indexed: 11/27/2022] Open
Abstract
A 62-year-old woman with nephrotic syndrome underwent a renal biopsy. Under light microscopy, the biopsy findings included lobulation and enlargement of glomeruli, occasional thickening of glomerular capillary walls, and narrowing of the capillary lumen by swollen endothelial cells. Congo red staining was negative for amyloid. No significant intraglomerular fibrin deposition was found by phosphotungstic acid hematoxylin staining. Immunofluorescence microscopy showed no deposition of immunoglobulin G, A, or M; no κ or λ light chains; and no C3 or C1q. Electron microscopy revealed distinctive subendothelial and mesangial fibrillar deposits, mesangial cell interposition, and swelling and vacuolization of endothelial cells resulting in capillary lumen narrowing. Although some curvilinear fibrillar deposits mimicked the bundles of type III collagen fibers seen in collagenofibrotic glomerulopathy, neither glomerular deposition of type III collagen nor elevation of serum procollagen III peptide was noted. This glomerulopathy does not fulfill any known disease entities with non-amyloid non-immunoglobulin-derived organized glomerular deposits.
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Affiliation(s)
- Tatsuo Yamamoto
- Division of Nephrology, Fujieda Municipal General Hospital, 4-1-11 Surugadai, Fujieda, Shizuoka, 426-8677, Japan.
| | - Akashi Togawa
- Division of Nephrology, Shizuoka Saiseikai General Hospital, Shizuoka, Japan
| | | | - Naro Ohashi
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hideo Yasuda
- First Department of Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yutaka Harita
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Motoshi Hattori
- Department of Pediatric Nephrology, Tokyo Women's Medical University, Tokyo, Japan
| | | | - Kunio Ohyama
- Division of Nephrology, Yokohama Daiichi Hospital, Yokohama, Japan
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Biochemical properties and aggregation propensity of transforming growth factor-induced protein (TGFBIp) and the amyloid forming mutants. Ocul Surf 2014; 13:9-25. [PMID: 25557343 DOI: 10.1016/j.jtos.2014.04.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 04/01/2014] [Accepted: 04/08/2014] [Indexed: 02/07/2023]
Abstract
TGFBI-associated corneal dystrophies are characterized by accumulation of insoluble deposits of the mutant protein transforming growth factor β-induced protein (TGFBIp) in the cornea. Depending on the nature of mutation, the lesions appear as granular (non-amyloid) or lattice lines (amyloid) in the Bowman's layer or in the stroma. This review article emphasizes the structural biology aspects of TGFBIp. We discuss the tinctorial properties and ultrastructure of deposits observed in granular and lattice corneal dystrophic mutants with amyloid and non-amyloid forms of other human protein deposition diseases and review the biochemical and putative functional role of the protein. Using bioinformatics tools, we identify intrinsic aggregation propensity and discuss the possible protective role of gatekeepers close to the "aggregation-prone" regions of native TGFBIp. We describe the relative aggregation rates of lattice corneal dystrophy (LCD) and granular corneal dystrophy (GCD2) mutants using the three-parameter model, which is based on intrinsic properties of polypeptide chains. The predictive power of this model is compared with two other algorithms. We conclude that the model is able to predict the aggregation rate of mutants which do not alter overall net charge of the protein. The need to understand the mechanism of corneal dystrophies from the structural biology viewpoint is emphasized.
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