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How Does Inflammatory Bowel Disease Activity Impacts Pregnancy?

by Dr. Jayashree Gopinath on Nov 11 2022 7:59 PM
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Does inflammatory bowel disease play a role in pregnancy? Inflammatory bowel disease is a risk factor for giving birth preterm even when it’s in remission state.

 How Does Inflammatory Bowel Disease Activity Impacts Pregnancy?
Inflammatory bowel disease is a risk factor for giving birth preterm even when in apparent disease remission, a University of Gothenburg study shows. If corroborated, the results may eventually affect recommendations for women with ulcerative colitis who tries to conceive.

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What is inflammatory bowel disease (IBD)?

Inflammatory bowel disease (IBD) is a chronic inflammatory disease with a prevalence of approximately 0.5 percent. IBD, which includes ulcerative colitis and Crohn’s disease, and – unlike irritable bowel syndrome (IBS) — causes visible damage to the mucous membrane (mucosa) lining the intestines. A characteristic of IBD is its recurrent tendency for symptoms to flare up (relapse), followed by periods of low or no disease activity (remission).
The onset of IBD commonly occurs at age 15–30. Questions about its impact on pregnancy and the fetus are therefore common. IBD has previously been linked to negative birth outcomes, such as preterm birth (birth <37 weeks of pregnancy), mainly in women showing signs of active disease.

Also, women without obvious IBD activity often have microscopic inflammation in the intestinal mucosa. Until now, however, it has been unknown whether even microscopic inflammation may be associated with risks in pregnancy.

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Does Inflammatory bowel disease raise the risk of preterm birth?

The new study published in the journal eClinicalMedicine, shows that microscopic inflammation in IBD, especially ulcerative colitis, is linked to an elevated risk of giving birth prematurely.

Among babies born to women with microscopic inflammation due to IBD, 9.6 percent were preterm, while 6.5 percent of children were born preterm to women without microscopic inflammation of IBD. This corresponds to a relative risk increase of 46 percent.

Microscopic inflammation was not associated with other adverse pregnancy outcomes, such as growth restriction. The results are based on registered data on women in Sweden, diagnosed with IBD in 1990–2016, in whom information was available on the microscopic appearance of the intestine shortly before pregnancy.

The study included 1,223 children of women with microscopic IBD inflammation of the intestine and 630 children of women with IBD but with the microscopically healed intestinal mucosa. Through register linkages, data were also retrieved from several national health registers, such as the Swedish Medical Birth Register and the Swedish Quality Register for Inflammatory Bowel Disease (SWIBREG).

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Prospect of New Treatment Targets

The results suggest that IBD treatment is aimed at not merely alleviating symptoms of IBD, but also microscopically healing the intestine, which can reduce the risk of giving birth preterm. If the results hold up in future studies, they may therefore be the basis for recommendations to confirm microscopic healing before pregnancy, to reduce such risks.

Even a modestly increased relative risk of preterm birth is important, given that preterm birth can greatly affect the child's health in both the short and the long term. Preterm birth is still one of the most common causes of death for children under the age of five.



Source-Eurekalert


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