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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
Chorioamnionitis, IL-17A, and fetal origins of neurologic disease
Shelley M Lawrence1,2, James L Wynn3,4
1College of Medicine, Department of Pediatrics, Division of Neonatal-Perinatal Medicine, University of California, San Diego, CA, USA.
Insights
Interleukin-17A (IL-17A) is a key mediator in fetal brain injury and cerebral palsy development. Maternal inflammation during pregnancy also impacts offspring neurological health, affecting conditions like autism and multiple sclerosis.
Area of Science:
- Neuroscience
- Immunology
- Developmental Biology
Background:
- Cerebral palsy affects 1 in 323 infants, with incidence unchanged by neonatal care advances.
- Intrauterine infection and inflammation are highly correlated with cerebral palsy.
- Immune responses, particularly cytokine IL-17A, are implicated in fetal brain injury.
Purpose of the Study:
- To review the role of IL-17A in fetal and maternal inflammatory responses causing brain injury.
- To highlight IL-17A's contribution to cerebral palsy and other neurologic sequelae.
- To discuss maternal inflammatory responses in the development of childhood and adult neurologic conditions.
Main Methods:
- Literature review of studies on IL-17A, fetal brain injury, and maternal inflammation.
- Analysis of immune pathways linking inflammation to neurologic impairment.
- Synthesis of findings on IL-17A's role in cerebral palsy, autism, schizophrenia, and multiple sclerosis.
Main Results:
- IL-17A is identified as a crucial early proinflammatory mediator causing brain injury.
- Maternal inflammatory responses can lead to debilitating neurologic conditions in offspring.
- IL-17A plays a significant role in fetal brain injury and subsequent neurologic conditions.
Conclusions:
- IL-17A is a critical factor in fetal brain injury and cerebral palsy.
- Maternal inflammation during pregnancy has long-term neurological consequences for offspring.
- Targeting IL-17A may offer therapeutic strategies for preventing or treating neurodevelopmental disorders.
Abstract:
The Centers for Disease Control and Prevention estimate that 1 in 323 infants have cerebral palsy. Highly correlated to intrauterine infection and inflammation, the incidence of cerebral palsy has remained constant over the last few decades despite significant advances in neonatal intensive care including improved ventilator techniques, surfactant therapy, maternal steroid administration, and use of intrapartum empiric antimicrobials. Recent advances in our understanding of immune responses to infection and inflammation have identified the cytokine IL-17A as a crucial component of early proinflammatory mediators that cause brain injury associated with neurologic impairment. Remarkably, maternal inflammatory responses to in utero inflammation and infection can also lead to potentially debilitating neurologic conditions in the offspring, which often become clinically apparent during childhood and/or early adulthood. This review details the role of IL-17A in fetal and maternal proinflammatory responses that lead to fetal brain injury and neurologic sequelae, including cerebral palsy. Recent findings regarding the role of maternal inflammatory responses in the development of childhood and adult neurologic conditions, such as autism, schizophrenia, and multiple sclerosis, will also be highlighted.
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