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Maternal hypothyroidism in the perinatal period and childhood asthma in the offspring

Reference Liu X, Andersen SL, Olsen J, et al. Maternal hypothyroidism in the perinatal period and childhood asthma in the offspring. Allergy 2018;73(4):932-9.
Udgivet: 2018
[Type] Videnskabelig artikel
[Resumé] BACKGROUND: There is increasing interest in the possible link between maternal hypothyroidism in the perinatal period and childhood asthma risk. We explored this in the present study while accounting for the timing of hypothyroidism diagnosis. Further, we evaluated whether the risk was moderated by thyroid hormone treatment during pregnancy. METHODS: We conducted a population-based cohort study using Danish national registers. All liveborn singletons in Denmark from 1998 to 2007 were identified. Maternal hypothyroidism and asthma in the children were defined by data from the Patient Register and Prescription Registry. We estimated incidence rate ratios (IRRs) of asthma among children born to hypothyroid mothers versus children born to mothers with no recorded thyroid dysfunction using Poisson regression models. RESULTS: Of 595,669 children, 3,524 children were born to mothers with hypothyroidism diagnosed before delivery and 4,664 diagnosed after delivery. Overall 48,990 children received treatment for asthma. The IRRs of asthma was 1.16 (95% confidence interval (CI): 1.03-1.30) and 1.12 (95% CI: 1.02-1.24) for children born to mothers with hypothyroidism diagnosed before and after delivery, compared to children born to mothers with no thyroid dysfunction. The highest risk was observed among children born to mothers with hypothyroidism diagnosed before delivery who did not receive thyroid hormone treatment during pregnancy (IRR=1.37, 95% CI: 1.04-1.80). CONCLUSION: Our findings suggest that maternal hypothyroidism, especially when it is untreated, increases childhood asthma risk. Early detection and appropriate treatment of hypothyroidism in pregnant women may be an area for possible prevention of childhood asthma. This article is protected by copyright. All rights reserved
Link: http://dx.doi.org/10.1111/all.13365
Bestilling: Denne udgivelse kan ikke bestilles fra NFA's Forlag
[Oprettet] 30.11.2017
 
Opdateret  30.11.2017
Kontakt: NFA's webredaktion
 
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