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How lung injury and therapeutic oxygen could alter white matter development
Robert W Dettman1,2, Maria L V Dizon1,2
1Perinatal Origins of Disease, Stanley Manne Children's Research Institute, Chicago, IL, USA.
Insights
Developmental brain injury impacts lifelong cognitive and motor skills. This review explores the critical link between oxygen levels, lung health, and proper brain myelination in infants.
Area of Science:
- Neonatal neurology
- Developmental neuroscience
- Pediatric respiratory medicine
Background:
- Developmental brain injury encompasses neurological deficits from antenatal or perinatal events.
- Risk factors include prematurity, hypoxia-ischemia, hemorrhage, and oxygen supplementation.
- Infants with bronchopulmonary dysplasia show reduced white matter and intracranial volumes, suggesting a lung-brain connection.
Purpose of the Study:
- To review the current understanding of the relationship between oxygen and brain myelination.
- To explore scientific mechanisms linking supplemental oxygen and lung injury to brain development.
- To inform clinical management of preterm lung disease for optimal brain health.
Main Methods:
- Literature review of studies on oxygen, lung injury, and brain development.
- Analysis of research investigating myelination processes in the context of neonatal care.
- Exploration of potential molecular and physiological pathways involved.
Main Results:
- Supplemental oxygen and lung injury are associated with altered brain development, particularly white matter.
- A complex interplay exists between lung status, oxygen exposure, and myelination.
- Specific mechanisms are under investigation to elucidate these developmental effects.
Conclusions:
- The lung, oxygenation, and brain development are interconnected, influencing myelination.
- Understanding this link is crucial for managing preterm infants with lung disease.
- Optimizing respiratory support may mitigate negative impacts on brain health.
Abstract:
Developmental brain injury describes a spectrum of neurological pathologies resulting from either antenatal or perinatal injury. This includes both cognitive and motor defects that affect patients for their entire lives. Developmental brain injury can be caused by a spectrum of conditions including stroke, perinatal hypoxia-ischemia, and intracranial hemorrhage. Additional risk factors have been identified including very low birth weight, mechanical ventilation, and oxygen (O2 ) supplementation. In fact, infants with bronchopulmonary dysplasia, an inflammatory disease associated with disrupted lung development, have been shown to have decreased cerebral white matter and decreased intracranial volumes. Thus, there appears to be a developmental link between the lung, O2 , and the brain that leads to proper myelination. Here, we will discuss what is currently known about the link between O2 and myelination and how scientists are exploring mechanisms through which supplemental O2 and/or lung injury can affect brain development. Consideration of a link between the diseased lung and developing brain will allow clinicians to fine tune their approaches in managing preterm lung disease in order to optimize brain health.
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