title: C-reactive protein is increased in patients with degenerative aortic valvular stenosis.
abstract: OBJECTIVE
  The goal of this study was to assess the presence of systemic inflammation in degenerative aortic valvular stenosis.
  
  
  BACKGROUND
  Local inflammatory changes, resembling those observed in atherosclerosis, have been recently reported in degenerative aortic valvular stenosis. It is presently unknown whether systemic signs of inflammation, similar to those observed in atherosclerosis, may be present in this disorder.
  
  
  METHODS
  C-reactive protein (CRP) was measured by enzyme immunoassay in 141 subjects: 62 with trileaflet degenerative valvular aortic stenosis and 79 volunteers with similar demographic and clinical characteristics. IgG antibodies against Helicobacter pylori (enzyme-linked immunosorbant assay) and Chlamydia pneumoniae (microimmunofluorescence assay) were also measured.
  
  
  RESULTS
  C-reactive protein levels (mg/dl, mean +/- SD) were 0.848 +/- 1.42 in patients and 0.394 +/- 0.50 in controls (p = 0.0001, Mann-Whitney U test). Seroprevalence of H. pylori was 68.7% in patients and 79.7% in controls (p = NS), whereas seroprevalence of C. pneumoniae infection was higher in patients than it was in controls (59.7% vs. 33%, p = 0.003; chi-square test). After adjustment for various covariates in multiple logistic regression, the odds ratio for degenerative aortic stenosis was 3.41 for C. pneumoniae infection (95% confidence intervals [CI]: 1.60 to 7.30) and 2.76 for CRP (95% CI: 1.08 to 7.05). There was no significant difference in patients or controls in CRP levels according to the serostatus for C. pneumoniae.
  
  
  CONCLUSIONS
  Systemic signs of inflammation, similar to those found in atherosclerosis, are present in patients with degenerative aortic valve stenosis. They do not seem to be linked to C. pneumoniae or H. pylori infection.
authors.affiliation: Medical Semiology and Methodology, Tor Vergata University, Rome, Italy. galante@med.uniroma2.it
authors.forename: A
authors.initials: A
authors.lastname: Galante
authors.forename: A
authors.initials: A
authors.lastname: Pietroiusti
authors.forename: M
authors.initials: M
authors.lastname: Vellini
authors.forename: P
authors.initials: P
authors.lastname: Piccolo
authors.forename: G
authors.initials: G
authors.lastname: Possati
authors.forename: M
authors.initials: M
authors.lastname: De Bonis
authors.forename: R L
authors.initials: RL
authors.lastname: Grillo
authors.forename: C
authors.initials: C
authors.lastname: Fontana
authors.forename: C
authors.initials: C
authors.lastname: Favalli
mesh_terms: D000368:Aged; D001024:Aortic Valve Stenosis / Q000097:blood* / Q000503:physiopathology; D002097:C-Reactive Protein / Q000032:analysis*; D016993:Chlamydophila pneumoniae / Q000276:immunology; D005260:Female; D016480:Helicobacter pylori / Q000276:immunology; D006801:Humans; D007124:Immunoenzyme Techniques; D016015:Logistic Models; D008297:Male; D008875:Middle Aged
chemical_list: D002097:C-Reactive Protein