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Updated: May 26, 2026

A Murine Model of Fetal Exposure to Maternal Inflammation to Study the Effects of Acute Chorioamnionitis on Newborn Intestinal Development
Published on: June 24, 2020
Is chorioamnionitis harmful for the brain of preterm infants? A clinical overview
Milla Ylijoki1, Eeva Ekholm, Leena Haataja
1Department of Pediatric Neurology, Turku University Hospital, Finland.
Insights
Chorioamnionitis, an infection during pregnancy, may not directly harm preterm infant brains. Antenatal steroids appear to mitigate inflammation, suggesting a complex role in infant neurodevelopment.
Area of Science:
- Neonatal Neurology
- Perinatal Medicine
- Developmental Neuroscience
Background:
- Chorioamnionitis is a known risk factor for preterm birth.
- Potential links between chorioamnionitis and adverse neurological outcomes in preterm infants are debated.
- Understanding these effects is crucial for improving infant brain health.
Purpose of the Study:
- To systematically evaluate the impact of chorioamnionitis on the brains of preterm infants.
- To synthesize evidence regarding chorioamnionitis, brain lesions, and neurological development.
- To clarify the net effect of chorioamnionitis on preterm infant neurodevelopment.
Main Methods:
- Conducted a systematic review of original research articles.
- Searched databases for studies published up to October 2011.
- Included 84 articles from an initial pool of 609 potentially relevant studies.
Main Results:
- Most studies found no direct evidence of chorioamnionitis causing central nervous system damage in preterm infants.
- Antenatal steroid treatment appears to reduce the negative effects of inflammation on the developing nervous system.
- The overall impact of chorioamnionitis on infant brain development is complex, with potential benefits and risks.
Conclusions:
- Chorioamnionitis may have both beneficial and detrimental effects on preterm infant brain development.
- Inflammation associated with chorioamnionitis might promote maturation, potentially offering protective effects.
- The risks associated with chorioamnionitis for preterm infant brains are comparable to other causes of preterm delivery.
Background:
Chorioamnionitis is an important risk factor underlying preterm delivery, and it has also been suggested that it is associated with brain lesions and deviant neurological development in prematurely born infants.
Objective:
To evaluate the possible effects of chorioamnionitis on the brain of preterm infants.
Design:
A systematic review.
Methods:
A systematic database search was performed to identify all original articles published until 5 October 2011 evaluating the association between histological and/or clinical chorioamnionitis and brain lesions and/or neurological development in preterm infants. Altogether, 609 potentially relevant articles were identified, of which 84 original articles were included.
Results:
The majority of the articles do not support the hypothesis that chorioamnionitis poses a direct risk on the central nervous system of preterm infants. The full course of antenatal steroids seems to further reduce the adverse effects of inflammation on the developing nervous system.
Conclusions:
It seems that there are both benefits and risks with regard to the effects of chorioamnionitis on the brain development of preterm infants. It is plausible that inflammation enhances maturation of the preterm infant and therefore has protective effects balancing its potential harmful effects. We conclude that chorioamnionitis does not carry higher risks for the brain of preterm infants than other underlying pathologies behind preterm delivery.
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