The development of rapidly progressive glomerulonephritis associated with both antineutrophil cytoplasmic antibody-associated vasculitis and anti-glomerular basement membrane nephritis in the course of nontuberculous mycobacterium infection: a case report

Springer Science and Business Media LLC - Tập 4 - Trang 1-6 - 2020
Mikiya Kato1, Risa Wakiya1, Tomohiro Kameda1, Kousuke Inoue2, Tadashi Sofue3, Yusuke Ushio1, Koichi Sugihara1, Shusaku Nakashima1, Hiromi Shimada1, Mai Mahmoud Fahmy Mansour1, Norimitsu Kadowaki1, Hiroaki Dobashi1
1Department of Internal Medicine, Division of Hematology, Rheumatology and Respiratory Medicine, Faculty of Medicine, Kagawa University, Kagawa, Japan
2Department of Diagnostic Pathology, Faculty of Medicine, Kagawa University, Kagawa, Japan
3Department of Cardiorenal and Cerebrovascular Medicine, Faculty of Medicine, Kagawa University, Kagawa, Japan

Tóm tắt

Antineutrophil cytoplasmic antibodies (ANCA) and Anti-glomerular basement membrane (GBM) antibodies often induce rapidly progressive glomerulonephritis (RPGN). Some reports have demonstrated RPGN with the sequential appearance of ANCA then anti-GBM antibodies, suggesting that ANCA may induce the development of anti-GBM antibodies. Whereas, many reports have shown that the development of ANCA is associated with various infectious diseases, such as non-tuberculous mycobacterial infection. A 65-year-old woman with pulmonary non-tuberculous mycobacterial (NTM) infection was monitored without treatment. One year later, serum myeloperoxidase (MPO)- ANCA were elevated (14.1 U/mL (normal value < 3.0 U/ml)). A high fever and RPGN appeared 1 year later, and serum MPO-ANCAs were 94.1 U/mL. Anti-GBM antibodies were also detected. A renal biopsy revealed crescentic glomerulonephritis with linear deposits of IgG and C3c along the GBM and interstitial inflammation with endarteritis of arterioles. The diagnosis was RPGN associated with anti-GBM nephritis and ANCA-associated vasculitis. This report shows that preceding NTM infection may have induced ANCA and anti-GBM antibodies and caused the development of RPGN.

Tài liệu tham khảo

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