title: [Exploration of the complement system in clinical practice].
abstract: The complement system plays an important role in defence of the host against infection and in the clearance of immune complexes. Defects in complement proteins are often associated with infections or auto-immune/immune complex diseases. Investigation of complement is useful for diagnosis and following of autoimmune diseases. Hypocomplementemia may result from genetic deficiency and/or consumption through activation of the system. In the particular case of angioneurotic oedema, laboratory data are essential to confirm the diagnosis and to the follow-up of the patients. Inappropriate activation of the complement system associated with the release of inflammatory mediators contributes to the tissue damage.
authors.affiliation: Service d'immunologie, hôpital Broussais, Paris, France.
authors.forename: V
authors.initials: V
authors.lastname: Frémeaux-Bacchi
authors.forename: J
authors.initials: J
authors.lastname: Blouin
authors.forename: L
authors.initials: L
authors.lastname: Weiss
mesh_terms: D002648:Child; D003167:Complement Activation; D003165:Complement System Proteins / Q000172:deficiency / Q000378:metabolism; D005921:Glomerulonephritis / Q000378:metabolism; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000378:metabolism
chemical_list: D003165:Complement System Proteins
vernacular_title: L'exploration du système du complément en pratique clinique.