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Published on: May 12, 2018
Recent Insights Into Molecular Mechanisms of Propofol-Induced Developmental Neurotoxicity: Implications for the
Zeljko J Bosnjak1, Sarah Logan, Yanan Liu
1From the Departments of *Anesthesiology and †Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin.
Insights
Propofol anesthesia may harm developing brains, causing cell death and learning issues. Further research into propofol
Area of Science:
- Neuroscience
- Anesthesiology
- Developmental Toxicology
Background:
- General anesthetics can cause developmental neurotoxicity, impacting learning and memory.
- Propofol is a widely used anesthetic in children, but its neurotoxic potential is less understood.
- Concerns exist regarding the safety of propofol anesthesia in pediatric populations.
Purpose of the Study:
- To review current evidence on propofol-induced developmental neurotoxicity.
- To summarize findings from various experimental models.
- To discuss the mechanisms underlying propofol's neurotoxic effects.
Main Methods:
- Review of studies using animal models.
- Analysis of data from animal cell cultures.
- Examination of findings from human stem cell-derived neuron cultures.
Main Results:
- Propofol exhibits neurotoxic effects similar to other anesthetics in experimental models.
- Observed effects include increased neuronal and oligodendrocyte cell death.
- Propofol disrupts neurogenesis, dendritic development, and neurotrophic factor expression.
Conclusions:
- Propofol can induce developmental neurotoxicity through mechanisms like altered microRNAs and mitochondrial fission.
- Understanding these mechanisms is crucial for developing protective strategies.
- Further research is needed to mitigate propofol's neurotoxic effects on the developing brain.
Abstract:
Mounting evidence has demonstrated that general anesthetics could induce developmental neurotoxicity, including acute widespread neuronal cell death, followed by long-term memory and learning abnormalities. Propofol is a commonly used intravenous anesthetic agent for the induction and maintenance of anesthesia and procedural and critical care sedation in children. Compared with other anesthetic drugs, little information is available on its potential contributions to neurotoxicity. Growing evidence from multiple experimental models showed a similar neurotoxic effect of propofol as observed in other anesthetic drugs, raising serious concerns regarding pediatric propofol anesthesia. The aim of this review is to summarize the current findings of propofol-induced developmental neurotoxicity. We first present the evidence of neurotoxicity from animal models, animal cell culture, and human stem cell-derived neuron culture studies. We then discuss the mechanism of propofol-induced developmental neurotoxicity, such as increased cell death in neurons and oligodendrocytes, dysregulation of neurogenesis, abnormal dendritic development, and decreases in neurotrophic factor expression. Recent findings of complex mechanisms of propofol action, including alterations in microRNAs and mitochondrial fission, are discussed as well. An understanding of the toxic effect of propofol and the underlying mechanisms may help to develop effective novel protective or therapeutic strategies for avoiding the neurotoxicity in the developing human brain.
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