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Updated: Jul 17, 2025

Electroconvulsive Seizures in Rats and Fractionation of Their Hippocampi to Examine Seizure-induced Changes in Postsynaptic Density Proteins
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Electroconvulsive Seizures in Rats and Fractionation of Their Hippocampi to Examine Seizure-induced Changes in Postsynaptic Density Proteins

Published on: August 15, 2017

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Trpm2 deficiency in microglia attenuates neuroinflammation during epileptogenesis by upregulating autophagy via the

Chen Chen1, Tao Zhu2, Lifen Gong1

  • 1Department of Neurology, Department of Neurobiology and Department of Rehabilitation, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou 310052, China.

Neurobiology of Disease
|August 30, 2023
PubMed

Insights

Microglial Transient Receptor Potential Melastatin 2 (TRPM2) channels promote temporal lobe epilepsy. Knocking out TRPM2 in microglia reduces neuroinflammation and seizures by upregulating autophagy via the AMPK/mTOR pathway.

Area of Science:

  • Neuroscience
  • Immunology
  • Molecular Biology

Background:

  • Epilepsy is a common neurological disorder involving neuroinflammation.
  • Microglia and astrocytes are key glial cells implicated in epileptogenesis.
  • Transient Receptor Potential Melastatin 2 (TRPM2) channels are involved in inflammatory diseases.

Purpose of the Study:

  • To investigate the specific role of TRPM2 in microglia and astrocytes in epileptogenesis.
  • To elucidate the molecular mechanisms underlying TRPM2's role in epilepsy.

Main Methods:

  • Utilizing knockout mouse models for Trpm2 in specific glial cell types.
  • Employing kainic acid (KA) to induce epilepsy models.
  • Assessing glial activation, inflammatory cytokine production, and electrophysiological activity.
  • Analyzing autophagy regulation via the AMPK/mTOR pathway.

Main Results:

  • Trpm2 knockout specifically in microglia attenuated KA-induced glial activation, inflammation, and seizures.
  • Trpm2 knockout in astrocytes did not show significant therapeutic effects.
  • Therapeutic effects in microglial Trpm2 knockout were mediated by enhanced autophagy through the AMPK/mTOR pathway.

Conclusions:

  • Microglial TRPM2 plays a critical detrimental role in temporal lobe epilepsy.
  • Targeting microglial TRPM2 and modulating autophagy presents a potential therapeutic strategy for epilepsy.
Keywords:
AMPK/mTOR pathwayAstrocytesAutophagyEpileptogenesisMicrogliaNeuroinflammationTransient receptor potential melastatin 2

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