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A case of minimal change nephrotic syndrome with immunoglobulin A nephropathy transitioned to focal segmental glomerulosclerosis


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タイトル: A case of minimal change nephrotic syndrome with immunoglobulin A nephropathy transitioned to focal segmental glomerulosclerosis
著者: Hirose, Misaki / Nishino, Tomoya / Uramatsu, Tadashi / Obata, Yoko / Kitamura, Mineaki / Kawazu, Tayo / Miyazaki, Masanobu / Taguchi, Takashi / Kohno, Shigeru
発行日: 2012年 6月
出版者: Springer Japan
引用: Clinical and Experimental Nephrology, 16 (3), pp. 473-479; 2012
抄録: A 50-year-old woman with a 1-month history of lower extremity edema and a 5 kg weight increase was admitted to our hospital with suspected nephrotic syndrome in October 1999. Urine protein level was 3.5 g per day, 10-15 erythrocytes in urine per high-power field, and serum albumin level 2.5 g/dl. Furthermore, an accumulation of pleural effusion was confirmed by chest X-ray. The results of a renal biopsy indicated slight mesangial proliferation in the glomeruli by light microscopy, and an immunofluorescence study confirmed the deposition of immunoglobulin (Ig) A and C3 in the mesangial area. Diffuse attenuation of foot processes and dense deposits in the mesangial area were observed by electron microscopy. Treatment with 40 mg/day of prednisolone was effective, and proteinuria was negative 1 month later. Because of this course, we diagnosed minimal change nephrotic syndrome complicated by mild-proliferative IgA nephropathy. In November 2000, there was a relapse of nephrotic syndrome, which was believed to be induced by an influenza vaccination, but response to increased steroid treatment was favorable, and proteinuria disappeared on day 13 of steroid increase. A second relapse in May 2001, showed steroid resistance with renal insufficiency, and an increase in the selectivity index to 0.195. Light microscopy revealed focal sclerotic lesions of the glomeruli, and an immunofluorescence study revealed attenuation of mesangial IgA and C3 deposition. These findings led to the diagnosis that minimal change nephrotic syndrome had transitioned to focal segmental glomerulosclerosis, whereby mesangial IgA deposition was reduced by immunosuppressive treatment. Subsequently, her renal function gradually worsened to the point of end-stage renal failure by 27 months after the second relapse of nephrotic syndrome.
キーワード: Focal segmental glomerulosclerosis / IgA nephropathy / Influenza virus vaccine / Mesangial IgA deposition / Minimal change nephrotic syndrome / Nephrotic syndrome
URI: http://hdl.handle.net/10069/27908
ISSN: 13421751
DOI: 10.1007/s10157-011-0580-4
権利: © Japanese Society of Nephrology 2012 / The original publication is available at www.springerlink.com
資料タイプ: Journal Article
原稿種類: author
出現コレクション:130 学術雑誌論文

引用URI : http://hdl.handle.net/10069/27908

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