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Chinese Journal of Kidney Disease Investigation(Electronic Edition) ›› 2014, Vol. 03 ›› Issue (06): 297-303. doi: 10.3877/cma.j.issn.2095-3216.2014.06.004

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Progress of research on pathogenesis of primary small vasculitis

Min Chen1,()   

  1. 1.Nephrology Division,Peking University First Hospital, Beijing 100034,China
  • Online:2014-12-15 Published:2024-11-28
  • Contact: Min Chen

Abstract:

Antineutrophil cytoplasmic antibody (ANCA) associated vasculitis (AAV) is a group of common autoimmune diseases in which the kidney is one of the most involved organs with rapid progression and poor prognosis. ANCAs are specific serological markers of AAV. The pathogenesis of AAV has not yet been fully elucidated. However, the interaction among ANCA, neutrophil, and complement system plays a central role. Proinflammatory factors including C5a can prime neutrophils to express more target antigens for ANCA on neutrophil surface. ANCAs activate primed neutrophils to undergo a respiratory burst, degranulation, and produce neutrophil extracellular traps (NETs), which result in vascular endothelial cell injury. In addition,activation of neutrophil can activate complement alternative pathway to form C3 and C5 convertases and produce more C5a, thereby amplifying inflammation and leading to AAV. Besides, lymphocytes and anti-endothelial cell antibodies (AECA) also play an important role in pathogenesis of AAV.

Key words: Antineutrophil cytoplasmic antibody, Vasculitis, Neutrophil, Complement

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