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  • Title: Maternal antibiotic exposure and childhood allergies: The Japan Environment and Children's Study.
    Author: Okoshi K, Sakurai K, Yamamoto M, Mori C, Japan Environment and Children's Study group.
    Journal: J Allergy Clin Immunol Glob; 2023 Nov; 2(4):100137. PubMed ID: 37781654.
    Abstract:
    BACKGROUND: The association of maternal antibiotic exposure during pregnancy with childhood allergic diseases remains unclear. OBJECTIVE: We aimed to evaluate the association of maternal exposure to antibiotic use during pregnancy with childhood allergic diseases up to the age of 3 years by using data from a large Japanese birth cohort. METHODS: We analyzed data on 78,678 pregnant women and their offspring aged 0 to 3 years. Prenatal antibiotic exposure was defined as the use of any antimicrobial agent during pregnancy. Information was collected from maternal interviews and medical record transcripts. The outcome variables in this study included preschool asthma, wheezing, food allergy, atopic dermatitis, eczema, allergic rhinoconjunctivitis, and any allergic disease. We used logistic regression analysis to evaluate the association of antibiotic exposure during pregnancy with childhood allergic diseases. RESULTS: Among the participating mothers, 28.5% used antibiotics during pregnancy. Antibiotic exposure during pregnancy was associated with preschool asthma (adjusted odds ratio [aOR] = 1.12 [95% CI = 1.06-1.19]), wheezing (aOR = 1.11 [95% CI = 1.07-1.15]), allergic rhinoconjunctivitis (aOR = 1.10 [95% CI = 1.03-1.17]) and any allergic disease (aOR = 1.09 [95% CI = 1.05-1.14]) in offspring up to age 3 years. In contrast, maternal antibiotic use was not associated with food allergies, atopic dermatitis, or eczema. Additionally, the significant associations were not influenced by the timing of antibiotic exposure, sex of the infants, or maternal history of allergies. CONCLUSION: Maternal antibiotic exposure during pregnancy is associated with an increased risk of childhood respiratory allergies.
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