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  • Title: Immunopathology of early and clinically silent lupus nephropathy.
    Author: Cavallo T, Cameron WR, Lapenas D.
    Journal: Am J Pathol; 1977 Apr; 87(1):1-18. PubMed ID: 322502.
    Abstract:
    Detailed immunopathologic studies of early or silent renal alterations in systemic lupus erythematosus have been sparse. The renal biopsies of 16 lupus patients with normal renal function, including 8 with hematuria and/or proteinuria of recent onset, and 8 without clinically detectable renal disease were investigated by light, immunofluorescence, and electron microscopy. Immunoglobulins, complement components, and electron-dense deposits were detected in glomeruli of all patients, regardless of morphologic appearance or lack of clinical evidence of renal involvement. Features of membranous glomerulonepritis were observed in 4 patients with substantial proteinuria. In the remaining 12 patients, including 3 with hematuria and 4 with slight proteinuria, either minimal glomerular alterations or features of mesangial proliferative glomerulonephritis were seen. Transformation of the original disease was demonstrated in 3 of 3 patients rebiopsied within 2 years. The significance of these findings is discussed in relation to a) the spectrum of clinical and immunopathologic alterations in lupus nephritis and b) transformation of the original disease.
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