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Complement Activation in Patients with Sepsis Is in Part Mediated by C-Reactive Protein

Complement Activation in Patients with Sepsis Is in Part Mediated by C-Reactive Protein The involvement of C-reactive protein (CRP) in the activation of complement in patients with sepsis was investigated. In 104 patients with infections of varying severity, circulating levels of CRPcomplement complexes, which are specific indicators for CRP-mediated complement activation, were assessed. Complement-CRP complexes were increased in almost all patients and correlated significantly with levels of C3a (r = .59; P < .001) and C-reactive protein (r = .76; P < .001). In addition, they correlated with levels of secretory phospholipase A2 (r = .59; P P .001). Levels of complement-CRP complexes in patients with a pneumococcal type of infection were similar to those in patients with other types of infections. Complement-CRP complexes were significantly higher in patients with shock (P = .01) and in patients who died (P = .03). These results demonstrate that part of the complement activation in patients with sepsis is independent from a direct interaction with microorganisms but rather results from an endogenous mechanism involving CRP. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Infectious Diseases Oxford University Press

Complement Activation in Patients with Sepsis Is in Part Mediated by C-Reactive Protein

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References (41)

Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
Subject
Major Articles
ISSN
0022-1899
eISSN
1537-6613
DOI
10.1086/513803
Publisher site
See Article on Publisher Site

Abstract

The involvement of C-reactive protein (CRP) in the activation of complement in patients with sepsis was investigated. In 104 patients with infections of varying severity, circulating levels of CRPcomplement complexes, which are specific indicators for CRP-mediated complement activation, were assessed. Complement-CRP complexes were increased in almost all patients and correlated significantly with levels of C3a (r = .59; P < .001) and C-reactive protein (r = .76; P < .001). In addition, they correlated with levels of secretory phospholipase A2 (r = .59; P P .001). Levels of complement-CRP complexes in patients with a pneumococcal type of infection were similar to those in patients with other types of infections. Complement-CRP complexes were significantly higher in patients with shock (P = .01) and in patients who died (P = .03). These results demonstrate that part of the complement activation in patients with sepsis is independent from a direct interaction with microorganisms but rather results from an endogenous mechanism involving CRP.

Journal

Journal of Infectious DiseasesOxford University Press

Published: Jan 1, 1998

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