title: [C-reactive protein level and rate of detection of autoantibodies to beta(1)-adrenoreceptors in patients with supraventricular tachyarrhythmias].
abstract: In order to assess concentration of C-reactive protein (CRP) and prevalence of autoantibodies against beta(1)-adrenoreceptors (abeta(1)-AR) in patients with cardiac supraventricular arrhythmias we studied 53 patients with arrhythmias and 20 healthy control subjects. Patients with idiopathic arrhythmias (atrial fibrillation or flutter and atrial tachycardia, n=35) comprised group I. Group II was formed of 15 patients with supraventricular arrhythmias and dilated cardiomyopathy (DCM) or chronic myocarditis. Patients of group III (n=23) had supraventricular arrhythmias and arterial hypertension (AH). CRP concentration was determined by recently developed well standardized high sensitivity method. abeta(1)-AR were detected in blood serum by direct immunoassay. Synthetic fragment containing 26 amino acids of abeta(1)-AR second loop was used as antigen. Patients with supraventricular arrhythmias and DCM or chronic myocarditis had higher median CRP (8.0 mg/1) than patients with idiopathic arrhythmias (0.78 mg/l), with supraventricular arrhythmias and AH (1.57 mg/l), or control group (0.6 mg/l). Groups I, II and III showed similar prevalence of ab1-AR (51.4, 40.0, 52.2%, respectively), that was significantly higher than in control subjects (10%) (p<0.005). These results provide evidence of the possible presence of autoimmune and/or inflammatory processes that may be involved in the genesis of supraventricular arrhythmias.
authors.forename: M S
authors.initials: MS
authors.lastname: Bekbosynova
authors.forename: T Ia
authors.initials: TIa
authors.lastname: Nikitina
authors.forename: S P
authors.initials: SP
authors.lastname: Golitsyn
authors.forename: D S
authors.initials: DS
authors.lastname: Novikova
authors.forename: N V
authors.initials: NV
authors.lastname: Loladze
authors.forename: V P
authors.initials: VP
authors.lastname: Masenko
authors.forename: A G
authors.initials: AG
authors.lastname: Tonevitskiĭ
mesh_terms: D000328:Adult; D001323:Autoantibodies / Q000097:blood*; D001327:Autoimmune Diseases / Q000175:diagnosis*; D002097:C-Reactive Protein / Q000032:analysis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018342:Receptors, Adrenergic, beta-1 / Q000276:immunology*; D013617:Tachycardia, Supraventricular / Q000276:immunology*
chemical_list: D001323:Autoantibodies; D018342:Receptors, Adrenergic, beta-1; D002097:C-Reactive Protein