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Updated: Mar 11, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Neonatal abstinence syndrome and the gastrointestinal tract
Denise Maguire1, Maureen Gröer1
1University of South Florida College of Nursing, 12901 Bruce B. Downs Blvd., MDC 22, Tampa, FL, United States.
Insights
Opioid exposure during pregnancy may negatively impact newborn gut microbiome development. This dysbiosis, or imbalance, could lead to long-term health issues for infants experiencing Neonatal Abstinence Syndrome (NAS).
Area of Science:
- Neonatal health
- Microbiome research
- Pharmacology
Background:
- A healthy gut microbiome is crucial for newborn immunity and pathogen defense.
- Infant dysbiosis is linked to long-term adverse health outcomes.
- The impact of prenatal opioid exposure on the infant gut microbiome is unknown.
Purpose of the Study:
- To investigate the potential link between prenatal opioid exposure and gut microbiome dysbiosis in newborns.
- To hypothesize how opioid exposure and Neonatal Abstinence Syndrome (NAS) may affect infant microbiome development.
Main Methods:
- This study is a hypothesis-driven investigation based on existing knowledge.
- It considers infants exposed to mu opioid receptor agonists throughout gestation.
- It examines the gastrointestinal and neurological symptoms associated with NAS.
Main Results:
- The study hypothesizes that infants exposed to opioids in utero are at risk for gut dysbiosis.
- Opioid exposure and NAS development are speculated to cause an imbalanced gut microbiome.
Conclusions:
- Prenatal opioid exposure may disrupt the normal succession and development of the infant gut microbiome.
- This disruption could have lasting negative impacts on the child's future health.
Abstract:
Development of a healthy gut microbiome is essential in newborns to establish immunity and protection from pathogens. Recent studies suggest that infants who develop dysbiosis may be at risk for lifelong adverse health consequences. Exposure to opioid drugs during pregnancy is a factor of potential importance for microbiome health that has not yet been investigated. Since these infants are born after an entire gestation exposed to mu opioid receptor agonists and have severe gastrointestinal and neurological symptoms, we hypothesize that these infants are at risk for dysbiosis. We speculate that opioid exposure during gestation and development of NAS at birth may lead to a dysbiotic gut microbiome, which may impair normal microbiome succession and development, and impact future health of these children.
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