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Related Experiment Video

Updated: Jun 6, 2026

Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
09:43

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Published on: June 8, 2022

Complement factor H deficiency accelerates development of lupus nephritis.

Lihua Bao1, Mark Haas, Richard J Quigg

  • 1Section of Nephrology, The University of Chicago, 5841 S. Maryland Avenue, MC5100, Chicago, IL 60637, USA. lbao@medicine.bsd.uchicago.edu

Journal of the American Society of Nephrology : JASN
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

Complement factor H (CfH) deficiency accelerates lupus nephritis in MRL-lpr mice, worsening kidney function and survival. This highlights CfH's crucial role in regulating complement and immune complexes during lupus nephritis development.

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Area of Science:

  • Immunology
  • Nephrology
  • Complement System Biology

Background:

  • Complement factor H (CfH) regulates the alternative complement pathway.
  • CfH presence on platelets and podocytes aids immune complex processing.
  • Immune complexes are implicated in lupus nephritis pathogenesis.

Purpose of the Study:

  • To investigate the role of CfH in lupus nephritis development.
  • To examine the impact of CfH deficiency on MRL-lpr mice, a lupus model.

Main Methods:

  • Studied CfH-deficient MRL-lpr mice compared to CfH-sufficient littermate controls.
  • Assessed albuminuria, blood urea nitrogen (BUN) levels, mortality, and renal histology.
  • Utilized immunofluorescence and ultrastructural analysis to examine glomerular pathology.

Main Results:

  • CfH-deficient mice exhibited significantly increased albuminuria and BUN levels at 12 weeks.
  • Mortality was significantly higher in CfH-deficient mice by 14 weeks.
  • Histological analysis revealed severe diffuse lupus nephritis, immune deposits, and podocyte damage in CfH-deficient mice.

Conclusions:

  • Loss of Complement factor H accelerates lupus nephritis development in MRL-lpr mice.
  • CfH deficiency recapitulates key functional and structural features of human lupus nephritis.
  • Effective complement regulation by CfH is critical for preventing lupus nephritis pathogenesis.