4.7 Review

A conceptual framework linking immunology, pathology, and clinical features in primary membranous nephropathy

期刊

KIDNEY INTERNATIONAL
卷 100, 期 2, 页码 289-300

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.kint.2021.03.028

关键词

autoantibody; Heymann nephritis; immunologic remission; PLA2R; primary membranous nephropathy; recurrent membranous nephropathy

资金

  1. Boston Medical Center
  2. Boston University School of Medicine/Boston Medical Center Department of Medicine's Glomerular Disease Center
  3. [3T32DK007053-45S1]

向作者/读者索取更多资源

Primary membranous nephropathy is a leading cause of adult nephrotic syndrome. The identification of PLA2R as a target antigen and the ability to measure circulating autoantibodies has provided new insights into the humoral aspect of the disease. Additionally, the detection and monitoring of autoantibody levels are crucial for guiding disease management.
Primary membranous nephropathy is a leading cause of adult nephrotic syndrome. The field took a major step forward with the identification of phospholipase A2 receptor (PLA2R) as a target antigen in the majority of cases and with the ability to measure circulating autoantibodies to PLA2R. Since then, the existence of additional target antigens such as thrombospondin type-1 domain-containing 7A, exostosin 1 and 2, neural EGFL like 1, and semaphorin 3B has been demonstrated. The ability to detect and monitor levels of circulating autoantibodies has opened a new window onto the humoral aspect of primary membranous nephropathy. Clinicians now rely on clinical parameters such as proteinuria, as well as levels of circulating autoantibodies against PLA2R and the results of immunofluorescence staining for PLA2R within kidney biopsy tissue, to guide the management of this disease. The relationship between immunologic and clinical disease course is consistent, but not necessarily intuitive. In addition, kidney biopsy provides only a single snapshot of disease that needs to be interpreted in light of changing clinical and serological findings. A clear understanding of these dynamic parameters is essential for staging, treatment, and management of this disease. This review aims to shed light on current knowledge regarding the development and time course of changes in the serum levels of autoantibodies against PLA2R, proteinuria, and histological findings that underlie the pathophysiology of primary membranous nephropathy.

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