The diagnostic significance of anti-TypeII collagen antibody assay in rheumatoid arthritis
โ Scribed by K. Fujii; M. Tsuji; A. Kitamura; K. Murota
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 846 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0341-2695
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โฆ Synopsis
An improved enzyme-linked immunosorbent assay (ELISA) for the detection of anticollagen antibodies in human serum has been developed. With the use of this method, antibodies against native human Type H collagen were detected in 22.7% of sera from 480 patients with rheumatoid arthritis (RA). The antibodies were found to be collagen type specific, showing no reaction with human Type I and Type III collagens. The antibodies appeared in high incidence during the early phase of the disease, and RA patients with involvement of a single joint, monoarticular arthritis, were often positive for anti-Type II collagen antibodies. In most of these patients, anti-Type II collagen antibodies preceded the appearance of rheumatoid factors. The antibodies were all negative in sera from patients with gout, osteoarthritis (OA) and non-arthritic diseases. Thus, anti-Type II collagen antibody assay may have diagnostic significance for RA patients, especially those in whom laboratory and clinical findings provide only minimal help in diagnosis.
R~sum~. En vue de ddtecter des anticorps anti-collagone dans le s6rum humain, une technique amdlior6e du test ELISA a ~t6 raise au point. Par cette technique on a d6tect6 dans 22.7% des 6chantillons rassemblds chez 480 patients atteints d' arthrite rhumatome (AR), des anticorps contre le collagOne Type II d'origine humaine. Ces anticorps agissent sur un type spdcifique de collagkne et restent inactifs vis gt vis des collagOnes naturels d'origine humaine de
Type I et III. Les anticorps apparaissent avec une grande fr6quence pendant la premiOre phase de la maladie et les patients atteints d'une seule localisa-Reprint requests to: K. Fujii tion d'AR, c'est ~t dire d'une monoarthrite, sont souvent positifs aux anticorps anti-collagOne Type II. Chez la plupart de ces patients les anticorps anti-collagbne Type H ont pr~c6di l' apparition des facteurs rhumato'Mes. D'autre part, on a constat6 que ces anticorps ne sont pas prdsents dans le sdrum des patients atteints de goutte, d'ost~o-arthrose et de maladies non arthrosiques. Par consdquent la recherche d' anticorps anti-collagOne Type H pourrait jouer un role important dans le diagnostic d'AR, en particulier chez les malades pour lesquels l'examen clinique et les examens de laboratoire ne fournissent que peu d'616ments en faveur de ce diagnostic.
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