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Function of C-reactive protein.

T W Du Clos1

  • 1The VA Medical Center and the University of New Mexico School of Medicine, Department of Medicine, Albuquerque, USA. tduclos@unm.edu

Annals of Medicine
|June 14, 2000
PubMed
Summary
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C-reactive protein (CRP), a key inflammatory marker, rapidly rises during infection or trauma and falls as the condition resolves. Its measurement helps monitor inflammation and innate immune responses.

Area of Science:

  • Biochemistry
  • Immunology

Background:

  • C-reactive protein (CRP) is a highly conserved molecule belonging to the pentraxin family.
  • Secreted by the liver, CRP levels rise rapidly in response to inflammatory cytokines, trauma, infection, and decrease upon resolution.

Purpose of the Study:

  • To explain the role of CRP in the innate immune system.
  • To highlight CRP's function as a surveillance molecule and its interaction with the adaptive immune system.

Main Methods:

  • The abstract does not specify methods but discusses CRP's binding properties and interactions.
  • Analysis of CRP's calcium-dependent binding to damaged tissues, nuclear antigens, and pathogens.
  • Comparison of CRP's immune functions with Immunoglobulin G (IgG).

Main Results:

Related Experiment Videos

  • CRP activates complement, binds Fc receptors, and acts as an opsonin, similar to IgG.
  • CRP interaction with Fc receptors generates proinflammatory cytokines, enhancing inflammation.
  • CRP recognizes altered self and foreign molecules via pattern recognition, unlike IgG's specific epitope recognition.

Conclusions:

  • CRP functions as a crucial surveillance molecule in the innate immune system.
  • CRP provides early defense by recognizing altered self and pathogens, initiating a proinflammatory signal.
  • CRP bridges innate and adaptive immunity by activating humoral and adaptive immune responses.