Internal medicine (Tokyo, Japan) · 2022
Use of Immunosuppressive Therapy in the Treatment of IgA-dominant Infection-related Glomerulonephritis.
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Okumura Motohiro, Sugihara Shinnosuke, Seki Kurumi, Nagaoka Kanako, Okawa Naoki, Ebihara Masayuki, Inoue Takahiro, Fukuda Junko, Ohara Mamiko, Imasawa Toshiyuki, Kitamura Hiroshi, Oda Takashi, Suzuki Tomo
Аннотация
A 51-year-old Japanese man who experienced colon cancer recurrence following primary and metastatic lesion resection was hospitalized due to facial cellulitis with febrile neutropenia and purpura on his lower extremities after chemotherapy. It was complicated by rapidly progressive glomerulonephritis. He was diagnosed with immunoglobulin A (IgA)-dominant endocapillary proliferative glomerulonephritis based on kidney histology. His glomeruli were positive for the nephritis-associated plasmin receptor, plasmin activity and galactose-deficient IgA1 (Gd-IgA1). A skin biopsy immunofluorescence study revealed IgA deposition within perivascular regions but no Gd-IgA1 deposition. The final diagnosis was IgA-dominant infection-related glomerulonephritis (IRGN). The patient's renal function returned to normal after receiving immunosuppressive therapy that consisted of a glucocorticoid and a cyclophosphamide. Immunosuppressive therapy should be considered in cases of IRGN if the patient's infection is completely under control.