[Anticytoplasm antibodies of polymorphonuclear neutrophils in Wegener's granulomatosis, other autoimmune diseases, and in patients undergoing hemodialysis]. / Anticuerpos anti-citoplasma de polimorfonuclear neutrófilo en granulomatosis de Wegener, en otras enfermedades autoinmunes y en pacientes hemodializados.
Medicina (B Aires)
; 53(2): 113-6, 1993.
Article
em Es
| MEDLINE
| ID: mdl-8295526
Systemic vasculitis are an heterogeneous group of diseases characterized by inflammatory infiltration and necrosis of blood vessel walls. Antineutrophil cytoplasmic antibodies (ANCA) with different immunofluorescent patterns (C or P) have been described as serological markers of some of these diseases and some types of glomerulonephritis. The presence of ANCA by immunofluorescence on normal fixed polymorphonuclear neutrophils was investigated in 182 patients. Results are depicted in Table 1. ANCA was present in 16/17 (94%) patients with Wegener Granulomatosis (W.G.) (ACR criteria) (p < 0.001). In 14 out of the 16 (82%), the pattern was ANCA-C (associated in 10 with ANCA-P) and only ANCA-P was observed in the remaining two. The presence of ANCA was associated with active disease: 15/16 samples of active patients and 3/9 of inactive patients were ANCA positive (p < 0.01). Among the other groups, ANCA-C was detected in only one patient with isolated subglottal stenosis. The specificity of ANCA-C for W.G. was 99%. ANCA-P was also detected in 3/49 (6%) patients with connective tissue disorders and in 3/63 (5%) patients in chronic hemodialysis with exclusive or predominant renal disease of unknown etiology. Three additional ANCA positive patients with known diagnosis (2 W.G. and 1 Systemic Lupus Erythematosus) were also in hemodialysis in the same unit. Thus, an ANCA related mechanism may be involved in the pathogenesis of approximately 10% of cases undergoing this procedure. None of 45 sera submitted for the detection of antinuclear antibodies were ANCA positive. Detection of ANCA (especially C pattern) may be of help in the diagnosis of W.G. and in monitoring clinical activity of the disease.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Autoanticorpos
/
Doenças Autoimunes
/
Granulomatose com Poliangiite
Limite:
Humans
Idioma:
Es
Revista:
Medicina (B Aires)
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Argentina