Chapter 25

Lupus Nephritis

Matthew A. Roberts

Matthew A. Roberts

Eastern Health Clinical School, Monash University, Melbourne, VIC, Australia

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David J Tunnicliffe

David J Tunnicliffe

Sydney School of Public Health, The University of Sydney, Sydney, NSW, Australia

Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, NSW, Australia

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First published: 18 November 2022

Summary

Lupus nephritis is an important manifestation of the multisystem autoimmune disease systemic lupus erythematosus (SLE) with clinical features ranging from asymptomatic abnormalities on urine microscopy, to the nephrotic syndrome, to rapid loss of kidney function. In SLE there is disordered immune regulation leading to loss of self-tolerance, production of autoantibodies, and formation of immune complexes. The renal disorder criteria in both classifications are based on urinary findings: a measure of proteinuria and the presence of red blood cells or casts in the urine. Lupus nephritis is a classic autoimmune condition that requires giving enough immunosuppression to treat the disease adequately, but not enough to cause harm. As in other forms of glomerulonephritis, non-immunosuppressive therapy for lupus nephritis is intended to reduce proteinuria and control hypertension. Most patients with lupus nephritis are women of child bearing age and pregnancy should discuss early in their course to determine the management to be implemented before conception.

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