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Complement and kidney disease, new insights.

Nicholas R Medjeral-Thomas1, Matthew C Pickering, H Terence Cook

  • 1Department of Immunology and Inflammation, Faculty of Medicine, Imperial College London, UK.

Current Opinion in Nephrology and Hypertension
|March 26, 2021
PubMed
Summary
This summary is machine-generated.

The complement pathway is crucial in kidney diseases like C3 glomerulopathy and IgA nephropathy. Targeting complement activation offers potential therapeutic strategies for these conditions.

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Area of Science:

  • Nephrology
  • Immunology
  • Molecular Medicine

Background:

  • The complement system, a key part of innate immunity, plays an increasingly recognized role in the pathogenesis of various kidney diseases.
  • Dysregulation of complement activation is implicated in conditions such as C3 glomerulopathy (C3G), IgA nephropathy (IgAN), and thrombotic microangiopathy.

Purpose of the Study:

  • To review recent studies highlighting the significance of the complement pathway in kidney disease.
  • To discuss the pathogenic insights and therapeutic potential derived from understanding complement's role.

Main Methods:

  • Review of recent scientific literature focusing on complement activation in kidney diseases.
  • Analysis of immunohistochemical findings, genetic associations, and clinical data in C3G and IgAN.
  • Examination of therapeutic studies involving complement inhibitors.

Main Results:

  • In C3G, factor H related protein 5 (FHR5) deposition correlates with kidney function, and mycophenolate mofetil (MMF) shows therapeutic promise.
  • In IgAN, imbalances in factor H (FH) and FHR proteins (FHR1, FHR5) are associated with disease severity, alongside contributions from the lectin complement pathway.
  • Complement activation is evident across diverse kidney diseases, indicating its broad pathogenic relevance.

Conclusions:

  • The complement pathway is a critical factor in the development and progression of multiple kidney diseases.
  • Understanding complement dysregulation provides valuable pathogenic insights and identifies targets for novel therapies.
  • Ongoing drug development targeting complement activation holds significant therapeutic potential for kidney disease patients.