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. 1991 Oct;50(10):735-9.
doi: 10.1136/ard.50.10.735.

Heat shock proteins: the missing link between hormonal and reproductive factors and rheumatoid arthritis?

J A da Silva  1
Affiliations

Heat shock proteins: the missing link between hormonal and reproductive factors and rheumatoid arthritis?

J A da Silva. Ann Rheum Dis. 1991 Oct.

Abstract

PIP: Epidemiologic data suggest a strong link between hormonal and reproductive factors and the incidence of rheumatoid arthritis. Of interest is a possible protective effect of oral contraceptives or estrogen replacement therapy against the development of rheumatoid arthritis. At least 1 pregnancy also appears to reduce the risk of this disease. It has been hypothesized that hormonal contraceptive use and pregnancy elicit the production of higher amounts of endogenous heat shock proteins, which, in turn, induce immunotolerance to subsequent exposure to the actual triggering agent of rheumatoid arthritis. A related possibility is that pregnant women are exposed to specific types of heat shock proteins produced by the fetus in high concentrations. Heat shock proteins are known to be the predominant antigens related to the induction of reactive arthritis. The production of some such proteins is dependent on sex hormones in a tissue-specific way and their concentrations are raised dramatically by stimulation with estrogen and progesterone. A possible mechanism for heat protein-induced immunotolerance would be the predominant stimulation of a suppressor T cell clone. More research on the pathogenesis of rheumatic diseases and the activity of sex hormones could result in the development of a vaccine against rheumatoid arthritis.

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