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Midazolam prevents motor neuronal death from oxidative stress attack mediated by JNK-ERK pathway

Guo-Zheng Li1, Hong-Lei Tao1, Cheng Zhou1

  • 1Department of Anesthesiology, Tongde Hospital of Zhejiang Province, 234 Gucui Road, Hangzhou, 310012, Zhejiang, China.

Human Cell
|October 13, 2017
PubMed

Insights

Midazolam protects motor neurons from oxidative stress by reducing apoptosis. This sedative may be a promising treatment for motor neuron diseases by modulating the JNK-ERK signaling pathway.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Cell Biology

Background:

  • Midazolam is a sedative commonly used in mechanical ventilation.
  • Its neuroprotective potential, particularly against oxidative stress, remains underexplored.
  • Motor neuron diseases are characterized by the degeneration of motor neurons.

Purpose of the Study:

  • To investigate the protective effects of Midazolam on motor neuron-like cells (NSC34) under oxidative stress.
  • To elucidate the role of the JNK-ERK signaling pathway in Midazolam's neuroprotective mechanism.
  • To assess Midazolam's potential as a therapeutic agent for motor neuron diseases.

Main Methods:

  • Utilized the NSC34 cell line, a hybrid motor neuron-like cell model.
  • Induced oxidative stress using oligomycin A and rotenone (O/R) or phenylarsine oxide.
  • Assessed apoptosis via TUNEL assay and cleaved Caspase-3 expression.
  • Analyzed the modulation of the JNK-ERK signaling pathway, including phosphorylation levels.

Main Results:

  • Midazolam demonstrated a significant protective effect against oxidative stress-induced cytotoxicity in NSC34 cells.
  • Apoptosis markers, including TUNEL+ cells and cleaved Caspase-3, were reduced by 22% and 45%, respectively.
  • Midazolam modulated the phosphorylation of JNK and ERK signaling pathways, influencing cell survival under oxidative stress.

Conclusions:

  • Midazolam exhibits previously unrecognized neuroprotective properties against oxidative stress in motor neuron-like cells.
  • The protective effects are mediated, in part, through the modulation of the JNK-ERK signaling pathway.
  • Midazolam shows promise as a potential therapeutic candidate for treating motor neuron diseases.
Keywords:
JNK-ERK signaling pathwayMidazolamMotor neuronNSC34 cellsOxidative stress

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