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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes
Published on: June 28, 2024
Maternal antibiotic exposure during pregnancy and hospitalization with infection in offspring: a population-based
Jessica Eden Miller1, Chunsen Wu2, Lars Henning Pedersen3,4
1Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.
Insights
Maternal antibiotic use before or during pregnancy increases children's risk of hospitalized infections. This association highlights potential impacts on the early life microbiome and immune development.
Area of Science:
- Microbiome research
- Pediatric infectious diseases
- Reproductive health
Background:
- The early life microbiome is crucial for immune system development.
- Antibiotic use during pregnancy can disrupt the maternal microbiome.
- This disruption may increase offspring's susceptibility to diseases.
Purpose of the Study:
- To investigate the association between maternal antibiotic exposure (before and during pregnancy) and the risk of infection-related hospitalizations in children.
- To explore how timing and duration of antibiotic exposure influence this risk.
Main Methods:
- Utilized Danish national population-based databases for pregnancies from 1995-2009.
- Followed live-born singletons from birth until a first infection-related hospitalization, death, age 14, emigration, or end-2009.
- Defined exposure as maternal antibiotic prescriptions before and during pregnancy; outcome was infection-related hospitalization.
Main Results:
- Maternal antibiotic exposure during pregnancy was linked to a higher risk of childhood infection-related hospitalization (HR 1.18, 95% CI 1.17-1.19).
- Increased risks were observed with antibiotic prescriptions closer to birth and with more frequent prescriptions.
- Antibiotic exposure before pregnancy also elevated the risk (HR 1.10, 95% CI 1.07-1.12).
Conclusions:
- Antibiotic exposure before or during pregnancy is associated with an increased risk of hospitalized infections in children.
- Potential mechanisms include alterations in the maternal microbiome and shared genetic/environmental factors.
Background:
The early life microbiome contributes to immune development. Antibiotics during pregnancy alter the microbiome and may influence disease risks in the offspring. We investigated the relationship between maternal antibiotic exposure before and during pregnancy, and risk of childhood hospitalization with infection.
Methods:
We used population-based Danish national databases for pregnancies between 1995 and 2009. Infants were followed from birth until their first infection-related hospitalization, death, 14th birthday, emigration or end-2009. Exposure was maternal antibiotics prescribed before and during pregnancy. Outcome was infection-related hospitalization.
Results:
141 359 (18%) mothers had at least one antibiotic prescription during pregnancy, 230 886 (29.4% of those with complete data) in the 18 months before pregnancy. Of 776 657 live-born singletons, 443 546 infection-related hospitalizations occurred in 222 524 (28.6%) children. Pregnancy antibiotic exposure was associated with increased risk of childhood infection-related hospitalization [hazard ratio (HR) 1.18, 95% confidence interval (CI) 1.17-1.19]. In mothers prescribed antibiotics only during pregnancy whose child did not receive pre-hospitalization antibiotics, this association was present only in those born vaginally. Higher risks of infection-related hospitalization occurred when pregnancy antibiotic prescriptions were closer to birth and in mothers receiving more pregnancy antibiotics. Children born to mothers exposed to antibiotics before (but not during) pregnancy also had increased risk of infection-related hospitalization (HR 1.10, 95% CI 1.07-1.12).
Conclusions:
Antibiotic exposure before or during pregnancy was associated with increased risk of childhood hospitalized infections. Alteration of the maternally derived microbiome and shared heritable and environmental determinants are possible contributory mechanisms.
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