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Ferroptosis Contributes to Isoflurane Neurotoxicity
Yimeng Xia1,2, Xiaoyun Sun2, Yan Luo1
1Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Frontiers in Molecular Neuroscience
|January 29, 2019
Summary
Isoflurane exposure causes neurotoxicity in developing brains by inducing ferroptosis, a type of cell death. Ferrostatin-1, a ferroptosis inhibitor, protected against this isoflurane-induced brain injury.
Area of Science:
- Neuroscience
- Toxicology
- Cell Biology
Background:
- Mechanisms of isoflurane neurotoxicity in developing brains are not fully understood.
- Ferroptosis is a distinct form of programmed cell death involving iron-dependent reactive oxygen species (ROS).
Purpose of the Study:
- To investigate if ferroptosis contributes to isoflurane neurotoxicity in developing brain neurons.
- To explore ferrostatin-1 as a potential neuroprotective agent against isoflurane exposure.
Main Methods:
- Primary cortical neuronal cultures from embryonic mice (day-in-vitro 7) were exposed to isoflurane.
- Assessed changes in glutathione peroxidase 4 expression, ROS generation, mitochondrial membrane potential, and cell death.
- Evaluated the effects of ferrostatin-1 pre-treatment.
Main Results:
- Isoflurane exposure decreased glutathione peroxidase 4 expression and increased ROS generation, mitochondrial dysfunction, and cell death.
- Ferrostatin-1 significantly attenuated isoflurane-induced neurotoxicity.
- This study provides the first in vitro evidence linking ferroptosis to isoflurane neurotoxicity.
Conclusions:
- Ferroptosis is a key mechanism underlying isoflurane neurotoxicity in developing brain neurons.
- Ferrostatin-1 demonstrates potential as a clinical intervention for neuroprotection against isoflurane exposure.
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