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Pregnancy and early onset pauciarticular juvenile chronic arthritis
E Musiej-Nowakowska1, R Ploski
1Paediatric Clinic, Institute of Rheumatology, ul Spartańska 1, 02-637 Warsaw, Poland.
Insights
Pregnancy generally improves early onset pauciarticular juvenile idiopathic arthritis (EOP-JIA) disease activity. However, postpartum flares are common, particularly with breastfeeding or active disease prior to pregnancy.
Area of Science:
- Rheumatology
- Immunology
- Reproductive Medicine
Background:
- Early onset pauciarticular juvenile idiopathic arthritis (EOP-JIA) is a chronic autoimmune condition affecting children.
- The impact of pregnancy on autoimmune diseases like EOP-JIA requires further investigation, particularly regarding disease activity and postpartum outcomes.
Purpose of the Study:
- To investigate the interaction between pregnancy and EOP-JIA in Polish women.
- To confirm pregnancy's ameliorating effect on EOP-JIA disease activity.
- To identify factors contributing to postpartum disease flares, including breastfeeding.
Main Methods:
- A questionnaire and interview-based study of 39 adult women with a history of EOP-JIA.
- Categorization of patients into persistent (PeEOP-JIA) and extended (ExEOP-JIA) pauciarticular JIA subtypes.
- Analysis of reproductive outcomes and disease status in relation to pregnancy.
Main Results:
- Pregnancy was associated with disease remission in most cases.
- Postpartum flares occurred in 52% of pregnancies.
- Factors increasing flare risk included active disease pre-pregnancy, prior postpartum flares, and breastfeeding.
Conclusions:
- Pregnancy generally has a favorable outcome in EOP-JIA patients, inducing disease amelioration.
- Postpartum flares are frequent, especially in women with specific risk factors.
- EOP-JIA's pregnancy interaction pattern resembles Rheumatoid Arthritis (RA), differing from SLE and AS.
Objectives:
To study interaction of early onset pauciarticular juvenile chronic arthritis (EOP-JCA) and pregnancy in the Polish population, in particular to confirm the ameliorating effect of pregnancy on disease activity reported by others and to analyse the factors that govern the occurrence of postpartum flare, with emphasis on the potential role of breast feeding.
Methods:
The reproductive outcome and disease status in 39 adult women with history of EOP- JCA was examined by means of a questionnaire and an interview. In all patients the disease onset occurred before the 6th birthday, 19 had persistent pauciarticular JCA (PeEOP-JCA) and 20 had extended pauciarticular JCA (ExEOP-JCA).
Results:
23 women had at least one successful pregnancy, seven had unsuccessful pregnancies but all of them had also one or more successful pregnancies. Among those who have never been pregnant (n=16) there was a higher frequency of eye disease and ExEOP-JCA compared with the rest of the group. In almost all cases pregnancy was associated with remission of disease activity, however a postpartum flare appeared after 22 pregnancies (52%). The flares were more frequent in women who had an active disease before pregnancy, had a flare after a previous pregnancy and/or were breast feeding.
Conclusions:
In EOP-JCA patients pregnancy generally has a good outcome and induces amelioration of disease activity. After delivery, however, a flare of disease often appears, especially in women who were breast feeding, had a postparum flare previously or had an active disease before pregnancy. The pattern of interaction between disease and pregnancy found in EOP-JCA makes EOP-JCA similar in this respect to RA, but different from systemic lupus erythematosus and ankylosing spondylitis.