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  1. Seasonal variation in systemic onset juvenile rheumatoid arthritis in Israel.

    Article - En anglais

    Objective

    To determine whether there is a seasonal peak onset of systemic juvenile rheumatoid arthritis (SOJRA) suggestive of an infectious etiology.

    We examined the seasonal variability of SOJRA in Israel.

    Methods

    A multicenter retrospective chart review of 59 patients with SOJRA, enrolled from 10 rheumatology units or pediatric departments in Israel.

    All patients met defined criteria of SOJRA.

    Results

    Fifty-nine patients (31 female, 28 male) were followed from 1982 to 1997.

    Their mean age was 7.1 ± 4.3 years (range 0.9-16).

    Forty-six were Jewish and 13 were Arabs or of Bedouin origin.

    Eighteen patients (31%) had disease onset in the winter, 16 (27%) in the spring, 12 (20%) in the summer, and 13 (22%) in the fall.

    Twenty-eight patients had a monophasic disease subtype, while 31 had a chronic or cyclic subtype.

    The seasonal onset in the patients with the monophasic type versus the chronic or the cyclic type shows 7 versus 11 in the winter, 7 versus 9 in spring, 8 versus 4 in summer, and 6 versus 7 in fall, respectively.

    Conclusion

    There is no seasonal pattern to SOJRA disease onset in Israel.

    However, the disease onset of patients having the chronic or the polycyclic subtype tends to be more common in winter and spring.

    Since patients with this type have more severe disease, it is possible that another specific infectious agent is one of the factors involved in the pathogenesis of the disease.

    Larger sampling and multicenter studies are required to clarify this point.

    Mots-clés Pascal : Arthrite chronique juvénile, Enfant, Homme, Pathogénie, Variation saisonnière, Infection, Analyse corrélation, Epidémiologie, Israël, Asie, Chronique, Système ostéoarticulaire pathologie, Rhumatisme inflammatoire

    Mots-clés Pascal anglais : Juvenile rheumatoid arthritis, Child, Human, Pathogenesis, Seasonal variation, Infection, Correlation analysis, Epidemiology, Israel, Asia, Chronic, Diseases of the osteoarticular system, Inflammatory joint disease

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0274945

    Code Inist : 002B15D. Création : 16/11/1999.