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The role of complement, C5a and its receptors in sepsis and multiorgan dysfunction syndrome

Michael A. Flierl, H. Schreiber, Markus Huber‐Lang2006Journal of Investigative SurgeryReview
10.1080/08941930600778263PubMed
CardiovascularGastrointestinalImmune/InnateNeurologicalRenalRespiratory/Sinus

Abstract

Sepsis continues to be a major clinical problem that is difficult to treat, as the pathophysiology of the disease is still unclear. Despite promising experimental strategies, therapeutic interventions have been largely unsuccessful. There is now increasing evidence that the disturbance of innate immunity during sepsis and multiorgan dysfunction syndrome (MODS) may be linked to uncontrolled activation of the complement system. Especially, the powerful anaphylatoxin C5a seems to play a key role in the development of immune paralysis. In this review, we describe our present understanding of the role of complement in the inflammatory response during sepsis and MODS.

Key Biomarkers

AnaphylatoxinsC5aComplement activation

Symptom Clusters

Immune paralysisMultiorgan dysfunctionSepsisUncontrolled inflammatory response

References (9)

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  • Evaluation of C3a receptor expression on human leucocytes by the use of novel monoclonal antibodiesImmunology · 1999
  • Anaphylatoxin generation in multisystem organ failureThe Journal of Trauma: Injury, Infection, and Critical Care · 1984
  • Elevated plasma levels of the anaphylatoxins C3a and C4a are associated with a fatal outcome in sepsisThe American Journal of Medicine · 1989
  • C3a expressed in the central nervous system protects against LPS-induced shockNeuroscience Letters · 2005

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