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Injury of cortical neurons is caused by the advanced glycation end products-mediated pathway

Ying Xing1, Xu Zhang1, Xiangfu Song2

  • 1China-Japan Union Hospital, Jilin University, Changchun 130033, Jilin Province, China.

Neural Regeneration Research
|September 11, 2014
PubMed

Insights

Advanced glycation end products (AGEs) cause neuronal damage and cell death. Blocking the AGEs receptor pathway significantly reduces oxidative stress and apoptosis in rat neurons, identifying a key mechanism.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Cell Biology

Background:

  • Advanced glycation end products (AGEs) are implicated in cell apoptosis and endoplasmic reticulum stress.
  • The precise mechanism of direct cellular damage by AGEs remains unclear.
  • Neuronal damage is a critical factor in various neurological conditions.

Purpose of the Study:

  • To investigate the role of the receptor for advanced glycation end products (RAGE) in AGE-induced neuronal damage.
  • To elucidate the signaling pathway through which AGEs induce oxidative stress and apoptosis in neurons.
  • To determine if blocking RAGE can mitigate AGE-induced neurotoxicity.

Main Methods:

  • Primary cultures of rat cerebral cortex neurons were utilized.
  • Cells were treated with varying concentrations of AGEs (50–400 mg/L).
  • An antibody against RAGE was used to block receptor activity before and after AGE treatment.

Main Results:

  • AGE exposure increased free radical content and induced apoptosis in a dose-dependent manner.
  • Blocking RAGE with an antibody significantly reduced hydroxyl free radicals and malondialdehyde levels.
  • RAGE inhibition markedly suppressed AGE-induced neuronal apoptosis.

Conclusions:

  • The advanced glycation end products-receptor for advanced glycation end products (AGEs-RAGE) pathway is a primary mechanism for AGE-induced neuronal damage.
  • Targeting RAGE can mitigate AGE-induced oxidative stress and apoptosis in neurons.
  • This study identifies RAGE as a potential therapeutic target for AGE-related neurotoxicity.
Keywords:
advanced glycation end productsadvanced glycation end products receptorantibodyapoptosisbrain injurycortical neuronsneural regenerationneuroregenerationoxidative stressoxidative stress injurypathway

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