Pathological Role of Tonsillar B Cells in IgA Nephropathy

Although impaired immune regulation along the mucosa-bone marrow axis has been postulated to play an important role, the pathogenesis of IgA nephropathy (IgAN) is unknown; thus, no disease-specific therapy for this disease exists. The therapeutic efficacy of tonsillectomy or tonsillectomy in combina...

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Main Authors: Yusuke Suzuki, Hitoshi Suzuki, Junichiro Nakata, Daisuke Sato, Tadahiro Kajiyama, Tomonari Watanabe, Yasuhiko Tomino
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Clinical and Developmental Immunology
Online Access:http://dx.doi.org/10.1155/2011/639074
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author Yusuke Suzuki
Hitoshi Suzuki
Junichiro Nakata
Daisuke Sato
Tadahiro Kajiyama
Tomonari Watanabe
Yasuhiko Tomino
author_facet Yusuke Suzuki
Hitoshi Suzuki
Junichiro Nakata
Daisuke Sato
Tadahiro Kajiyama
Tomonari Watanabe
Yasuhiko Tomino
author_sort Yusuke Suzuki
collection DOAJ
description Although impaired immune regulation along the mucosa-bone marrow axis has been postulated to play an important role, the pathogenesis of IgA nephropathy (IgAN) is unknown; thus, no disease-specific therapy for this disease exists. The therapeutic efficacy of tonsillectomy or tonsillectomy in combination with steroid pulse therapy for IgAN has been discussed. Although randomized control trials for these therapies are ongoing in Japan, the scientific rationale for these therapies remains obscure. It is now widely accepted that abnormally glycosylated IgA1 and its related immune complex (IC) are probably key molecules for the pathogenesis, and are thus considered possible noninvasive biomarkers for this disease. Emerging evidence indicates that B cells in mucosal infections, particularly in tonsillitis, may produce the nephritogenic IgA. In this paper, we briefly summarize characteristics of the nephritogenic IgA/IgA IC, responsible B cells, and underlying mechanisms. This clinical and experimental information may provide important clues for a therapeutic rationale.
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institution Kabale University
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series Clinical and Developmental Immunology
spelling doaj-art-3ea72ae1f2e842b3a46b97c31f075c882025-02-03T01:07:18ZengWileyClinical and Developmental Immunology1740-25221740-25302011-01-01201110.1155/2011/639074639074Pathological Role of Tonsillar B Cells in IgA NephropathyYusuke Suzuki0Hitoshi Suzuki1Junichiro Nakata2Daisuke Sato3Tadahiro Kajiyama4Tomonari Watanabe5Yasuhiko Tomino6Division of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanDivision of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanDivision of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanDivision of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanDivision of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanDivision of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanDivision of Nephrology, Department of Internal Medicine, Juntendo University Faculty of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, JapanAlthough impaired immune regulation along the mucosa-bone marrow axis has been postulated to play an important role, the pathogenesis of IgA nephropathy (IgAN) is unknown; thus, no disease-specific therapy for this disease exists. The therapeutic efficacy of tonsillectomy or tonsillectomy in combination with steroid pulse therapy for IgAN has been discussed. Although randomized control trials for these therapies are ongoing in Japan, the scientific rationale for these therapies remains obscure. It is now widely accepted that abnormally glycosylated IgA1 and its related immune complex (IC) are probably key molecules for the pathogenesis, and are thus considered possible noninvasive biomarkers for this disease. Emerging evidence indicates that B cells in mucosal infections, particularly in tonsillitis, may produce the nephritogenic IgA. In this paper, we briefly summarize characteristics of the nephritogenic IgA/IgA IC, responsible B cells, and underlying mechanisms. This clinical and experimental information may provide important clues for a therapeutic rationale.http://dx.doi.org/10.1155/2011/639074
spellingShingle Yusuke Suzuki
Hitoshi Suzuki
Junichiro Nakata
Daisuke Sato
Tadahiro Kajiyama
Tomonari Watanabe
Yasuhiko Tomino
Pathological Role of Tonsillar B Cells in IgA Nephropathy
Clinical and Developmental Immunology
title Pathological Role of Tonsillar B Cells in IgA Nephropathy
title_full Pathological Role of Tonsillar B Cells in IgA Nephropathy
title_fullStr Pathological Role of Tonsillar B Cells in IgA Nephropathy
title_full_unstemmed Pathological Role of Tonsillar B Cells in IgA Nephropathy
title_short Pathological Role of Tonsillar B Cells in IgA Nephropathy
title_sort pathological role of tonsillar b cells in iga nephropathy
url http://dx.doi.org/10.1155/2011/639074
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AT daisukesato pathologicalroleoftonsillarbcellsiniganephropathy
AT tadahirokajiyama pathologicalroleoftonsillarbcellsiniganephropathy
AT tomonariwatanabe pathologicalroleoftonsillarbcellsiniganephropathy
AT yasuhikotomino pathologicalroleoftonsillarbcellsiniganephropathy