title: [Evaluation of C3c, C4 and C1-esterase inhibitor (C1-INH) during unstable angina].
abstract: BACKGROUND
  The complement system plays an important role in the physiopathology of acute myocardial infarction (AMI) taking part in myocardial damage and reperfusion injury. The aim of this study is to investigate the plasmatic levels of some complement components (C3c, C4 and C1-INH) during unstable angina (C1-INH) and their different concentrations in relation to the different myocardial areas affected by ischemia.
  
  
  METHODS
  The plasmatic levels of C1-INH, C3c and c4 in 30 patients affected by unstable angina, and those of 22 clinically healthy subjects (control group) were evaluated (Nefelometer Behering). The patients were divided into four groups according to the different myocardial area affected by ischemia (anterior, antero-lateral, lateral or inferior ischemia),
  
  
  RESULTS
  No statistically significant differences were found in plasmatic levels of C3c, C4 and C1-INH between the group of patients and the control group. There is a statistically significant difference between the C1-INH levels of the patients with inferior ischemia and the plasmatic concentrations of the whole patients' group (p<0,01), the control group (p<0,01) and the group of patients with lateral ischemia (p<0,02).
  
  
  CONCLUSIONS
  There seems to be a different activation of the complement system during unstable angina, in relation to the different myocardial area affected by ischemia.
authors.affiliation: Dipartimento di Scienze Cliniche, Università degli Studi di Roma La Sapienza, Rome, Italy. chiara.danese@UNIRO-MA1.it
authors.forename: C
authors.initials: C
authors.lastname: Danese
authors.forename: F
authors.initials: F
authors.lastname: Marcianò
authors.forename: M V
authors.initials: MV
authors.lastname: Ciarla
authors.forename: M
authors.initials: M
authors.lastname: Colotto
authors.forename: L
authors.initials: L
authors.lastname: Angrisani
authors.forename: E
authors.initials: E
authors.lastname: Ferranti
authors.forename: M C
authors.initials: MC
authors.lastname: Borgia
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000789:Angina, Unstable / Q000097:blood*; D003174:Complement C1 Inactivator Proteins / Q000032:analysis*; D015922:Complement C1q; D015932:Complement C3c / Q000032:analysis*; D003181:Complement C4 / Q000032:analysis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D003174:Complement C1 Inactivator Proteins; D003181:Complement C4; D015922:Complement C1q; D015932:Complement C3c