title: Further evidence of inflammation in chronic rheumatic valve disease (CRVD): high levels of advanced oxidation protein products (AOPP) and high sensitive C-reactive protein (hs-CRP).
abstract: Chronic rheumatic valve disease (CRVD) is a late sequel of Rheumatic Fever (RF) which appears in approximately 30% of RF patients, leading to valve injury. Advanced Oxidation Protein Products (AOPP) and high sensitive C-Reactive Protein (hs-CRP) plasma levels were measured in patients with CRVD in order to evaluate the presence of oxidative stress and systemic inflammation. A total of 90 patients (70 female, 20 male, mean age 46.01 +/- 11.72 years, range 24-69 years) with CRVD, who have or have not undergone valve replacement due to rheumatic etiology, and 46 healthy subjects (27 female, 19 male, mean age 41.89 +/- 9.02 years range 28-60 years) were studied. Levels of AOPP were measured by the determination of optical density (OD) at 340 nm under acidic conditions and hs-CRP by enhanced immunonephelometric assays. Significantly elevated levels of AOPP and hs-CRP were observed in CRVD patients when compared to the controls (AOPP 212.62 +/- 34.14 umol/l vs. 126.97 +/- 27.74 umol/l p < 0.00006 and for hs-CRP 5.40 +/- 1.98 mg/l vs. 2.66 +/- 1.36 mg/l p < 0.05). In addition, high levels of AOPP were associated to the presence of prosthetic valve and time after surgery (p < 0.0008 and p < 0.005, respectively). No correlation was observed between the levels of AOPP and hs-CRP with age, sex and degree of mitral valve stenosis. No correlation was found between AOPP and hs-CRP plasma values. These results suggest the involvement of oxidative stress and systemic inflammation in the pathogenesis of CRVD.
authors.forename: Y Y
authors.initials: YY
authors.lastname: Chiu-Braga
authors.forename: S Y
authors.initials: SY
authors.lastname: Hayashi
authors.forename: M
authors.initials: M
authors.lastname: Schafranski
authors.forename: I J T
authors.initials: IJ
authors.lastname: Messias-Reason
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil / Q000453:epidemiology; D002097:C-Reactive Protein / Q000378:metabolism*; D016022:Case-Control Studies; D002908:Chronic Disease; D005260:Female; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D018836:Inflammation Mediators / Q000097:blood*; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000097:blood* / Q000503:physiopathology / Q000601:surgery; D018384:Oxidative Stress; D012214:Rheumatic Heart Disease / Q000097:blood* / Q000503:physiopathology / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D018836:Inflammation Mediators; D002097:C-Reactive Protein