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Association between circulatory complement activation and hypertensive renal damage: a case-control study

Zhongli Wang1, Tingting Zhang2, Xinyu Wang3

  • 1Department of Physical Examination Center, Hebei General Hospital, Shijiazhuang, Hebei, China.

Renal Failure
|June 14, 2024
PubMed

Insights

Abnormal complement alternative pathway (AP) activation, indicated by elevated C3 and AP50 and reduced CFH, is linked to hypertensive renal damage. These complement factors are independent risk factors for developing and worsening kidney damage in hypertension.

Area of Science:

  • Nephrology
  • Immunology
  • Cardiovascular Research

Background:

  • Hypertensive renal damage is a significant complication of essential hypertension.
  • The role of the complement system, particularly the alternative pathway (AP), in this damage is not fully understood.

Purpose of the Study:

  • To investigate the potential role of complement system activation, specifically the AP, in the pathogenesis of hypertensive renal damage.
  • To identify specific complement factors associated with hypertension and renal damage.

Main Methods:

  • Serum levels of complement C3, complement Factor H (CFH), and AP activation (AP50) were measured.
  • Participants included patients with essential hypertension and renal damage (RD), essential hypertension without renal damage (NRD), and healthy controls.
  • Multifactorial logistic regression analysis was used to identify independent risk factors.

Main Results:

  • Serum C3 and AP50 levels increased progressively from healthy controls to NRD to RD.
  • CFH levels were significantly lower in patients with RD compared to NRD and healthy controls.
  • Elevated C3, elevated AP50, and decreased CFH were identified as independent risk factors for the development and progression of hypertensive renal damage, alongside age and BMI.

Conclusions:

  • Abnormal activation of the complement system, particularly the AP, is implicated in the pathogenesis of hypertensive renal damage.
  • Complement factors C3, AP50, and CFH serve as potential biomarkers and therapeutic targets for managing hypertensive renal damage.
Abstract

Keywords:
CFHComplement systemalternative complement pathway (AP)complement C3hypertensive renal damage

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