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[Evaluation of urinary factor H excretion in patients with idiopathic membranous nephropathy]

Morito Endo1, Yoshinobu Fuke, Hiroyuki Ohi

  • 1Faculty of Human Health Science, Hachinohe University, Aomori, Japan.

Nihon Jinzo Gakkai Shi
|August 19, 2007
PubMed

Insights

Urinary factor H levels were significantly elevated in patients with idiopathic membranous nephropathy (MN). Treatment led to a marked decline in urinary factor H, correlating with reduced proteinuria and C5b-9 excretion.

Area of Science:

  • Nephrology
  • Immunology
  • Complement System Biology

Context:

  • Idiopathic membranous nephropathy (MN) is a leading cause of nephrotic syndrome in adults.
  • The terminal complement complex (C5b-9) is implicated as a key mediator of proteinuria in MN.
  • Factor H is a critical regulator of complement activation, particularly at the C3 step.

Purpose:

  • To investigate the role of urinary factor H in idiopathic MN.
  • To assess the correlation between urinary factor H levels and disease activity markers.

Summary:

  • Seven patients with biopsy-proven idiopathic MN were monitored for 24 weeks.
  • Urinary factor H, protein, and C5b-9 levels were measured.
  • A significant decrease in urinary factor H was observed post-treatment, paralleling reductions in proteinuria and C5b-9.

Impact:

  • Urinary factor H levels may serve as a significant biomarker for idiopathic MN.
  • Factor H appears to contribute to the regulation of in situ complement activation in MN.
  • Findings suggest potential therapeutic implications targeting the complement system in MN.
Abstract

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