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  • Title: Myeloperoxidase-antineutrophil cytoplasmic antibody-positive crescentic glomerulonephritis complicating the course of Graves' disease: report of three adult cases.
    Author: Tanemoto M, Miyakawa H, Hanai J, Yago M, Kitaoka M, Uchida S.
    Journal: Am J Kidney Dis; 1995 Nov; 26(5):774-80. PubMed ID: 7485130.
    Abstract:
    Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis has been recently recognized in Graves' disease patients treated with propylthiouracil. We have experienced three adult cases of Graves' disease with main features being renal derangements. All three patients, who were between the ages of 22 and 82 years, had been treated with propylthiouracil for 2 to 5 years after a diagnosis of Graves' disease. After several weeks of upper respiratory tract infection or flu-like symptoms, they abruptly began to manifest proteinuria and hematuria concomitant with severe anemia. Their serum creatinine increased from normal levels to 1.2 to 3.6 mg/dL. Renal biopsy revealed crescentic glomerulonephritis without deposition of immune complexes (ie, pauci-immune type). Crescent formations were observed in 40% to 60% of the glomeruli in all three cases. The serum from the patients revealed positive perinuclear-ANCA and negative cytoplasmic-ANCA (C-ANCA) pattern, and myeloperoxidase (MPO)-ANCA titers were 120 to 502 ELISA Units/mL (normal, < 10 ELISA Units/mL). A withdrawal of propylthiouracil with or without immunosuppressive therapy ameliorated their renal derangements. Graves' disease patients should be placed under vigilant observation by monitoring their urinalysis and serum creatinine, especially when being treated with antithyroid drugs and when suffering from flu-like symptoms.
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