PubMed · 13617409
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J CHURG, E GRISHMAN. Subacute glomerulonephritis.. https://pubmed.ncbi.nlm.nih.gov/13617409/
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Collapsing glomerulopathy (CG) has become an important cause of ESRD. First delineated from other proteinuric glomerular lesions in the 1980s, CG is now recognized as a common, distinct pattern of proliferative parenchymal injury that portends a rapid loss of renal function and poor responses to empiric therapy. Notwithstanding, the rise in disorders that are associated with CG, the identification of the first susceptibility genes for CG, the remarkable increase in murine modeling of CG, and promising preclinical testing of new therapeutic strategies suggest that the outlook for CG as a poorly understood and therapeutically resistant renal disease is set to change in the future. This focused review highlights recent advances in research into the pathogenesis and treatment of CG.
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A 58-year-old man concurrently developed polymyositis (PM), interstitial lung disease, and nephrotic-range proteinuria. Renal biopsy revealed focal mesangial proliferative glomerulonephritis (mesPGN) with depositions of immunoglobulin and complements. A combination therapy of corticosteroid, intravenous immunoglobulin, and cyclosporine was found very effective for the patient. Glomerulonephritis associated with PM/dermatomyositis (DM) is rare. In our review of related literature, mesPGN was exclusively observed in polymyositis while membranous nephropathy in DM. The mechanism underlying the association between myositis and glomerulonephritis remains to be elucidated.