Activation of ERK5 is mediated by N-methyl-D-aspartate receptor and L-type voltage-gated calcium channel via Src involving oxidative stress after cerebral ischemia in rat hippocampus

Rui Min Wang, Quanguang Zhang, Guang Yi Zhang

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Activation (phosphorylation) and the possible mechanism of extracellular signal-regulated kinase 5 (ERK5) were evaluated after cerebral ischemia-reperfusion (I/R) in the hippocampus in a four-vessel occlusion model of Sprague-Dawley rats. Western blotting showed that ERK5 was strongly activated from 10 min to 1 day and peaked at 30 min of reperfusion after 15 min ischemia. Pretreatment with N-acetylcysteine, a free radical scavenger, effectively inhibited ERK5 activation in a dose-dependent manner. Consistently, ERK5 activation was significantly suppressed by genistein (protein-tyrosine kinase inhibitor), PP2 (specific inhibitor of Src family kinases), nifedipine (L-VGCC blocker) and dextromethorphan (NMDA receptor antagonist), but not 6,7-dinitroquinoxaline-2, 3(1H, 4H)-dione (AMPA receptor antagonist). These results suggested that ERK5 could be significantly activated by I/R, which might be mediated by NMDA receptor and L-VGCC through Src kinase pathway involving oxidative stress in rat hippocampus.

Original languageEnglish (US)
Pages (from-to)13-16
Number of pages4
JournalNeuroscience Letters
Volume357
Issue number1
DOIs
StatePublished - Feb 26 2004
Externally publishedYes

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Mitogen-Activated Protein Kinase 7
Calcium Channels
N-Methyl-D-Aspartate Receptors
Brain Ischemia
Hippocampus
Oxidative Stress
Reperfusion
Ischemia
Dextromethorphan
Free Radical Scavengers
AMPA Receptors
src-Family Kinases
Genistein
Acetylcysteine
Nifedipine
Protein Kinase Inhibitors
Protein-Tyrosine Kinases
Sprague Dawley Rats
Western Blotting
Phosphorylation

Keywords

  • Activation
  • Cerebral ischemia
  • Extracellular signal-regulated kinase 5
  • Hippocampus
  • N-acetylcysteine
  • N-methyl-D-aspartate receptor
  • Rat
  • Src

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

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title = "Activation of ERK5 is mediated by N-methyl-D-aspartate receptor and L-type voltage-gated calcium channel via Src involving oxidative stress after cerebral ischemia in rat hippocampus",
abstract = "Activation (phosphorylation) and the possible mechanism of extracellular signal-regulated kinase 5 (ERK5) were evaluated after cerebral ischemia-reperfusion (I/R) in the hippocampus in a four-vessel occlusion model of Sprague-Dawley rats. Western blotting showed that ERK5 was strongly activated from 10 min to 1 day and peaked at 30 min of reperfusion after 15 min ischemia. Pretreatment with N-acetylcysteine, a free radical scavenger, effectively inhibited ERK5 activation in a dose-dependent manner. Consistently, ERK5 activation was significantly suppressed by genistein (protein-tyrosine kinase inhibitor), PP2 (specific inhibitor of Src family kinases), nifedipine (L-VGCC blocker) and dextromethorphan (NMDA receptor antagonist), but not 6,7-dinitroquinoxaline-2, 3(1H, 4H)-dione (AMPA receptor antagonist). These results suggested that ERK5 could be significantly activated by I/R, which might be mediated by NMDA receptor and L-VGCC through Src kinase pathway involving oxidative stress in rat hippocampus.",
keywords = "Activation, Cerebral ischemia, Extracellular signal-regulated kinase 5, Hippocampus, N-acetylcysteine, N-methyl-D-aspartate receptor, Rat, Src",
author = "Wang, {Rui Min} and Quanguang Zhang and Zhang, {Guang Yi}",
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T1 - Activation of ERK5 is mediated by N-methyl-D-aspartate receptor and L-type voltage-gated calcium channel via Src involving oxidative stress after cerebral ischemia in rat hippocampus

AU - Wang, Rui Min

AU - Zhang, Quanguang

AU - Zhang, Guang Yi

PY - 2004/2/26

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N2 - Activation (phosphorylation) and the possible mechanism of extracellular signal-regulated kinase 5 (ERK5) were evaluated after cerebral ischemia-reperfusion (I/R) in the hippocampus in a four-vessel occlusion model of Sprague-Dawley rats. Western blotting showed that ERK5 was strongly activated from 10 min to 1 day and peaked at 30 min of reperfusion after 15 min ischemia. Pretreatment with N-acetylcysteine, a free radical scavenger, effectively inhibited ERK5 activation in a dose-dependent manner. Consistently, ERK5 activation was significantly suppressed by genistein (protein-tyrosine kinase inhibitor), PP2 (specific inhibitor of Src family kinases), nifedipine (L-VGCC blocker) and dextromethorphan (NMDA receptor antagonist), but not 6,7-dinitroquinoxaline-2, 3(1H, 4H)-dione (AMPA receptor antagonist). These results suggested that ERK5 could be significantly activated by I/R, which might be mediated by NMDA receptor and L-VGCC through Src kinase pathway involving oxidative stress in rat hippocampus.

AB - Activation (phosphorylation) and the possible mechanism of extracellular signal-regulated kinase 5 (ERK5) were evaluated after cerebral ischemia-reperfusion (I/R) in the hippocampus in a four-vessel occlusion model of Sprague-Dawley rats. Western blotting showed that ERK5 was strongly activated from 10 min to 1 day and peaked at 30 min of reperfusion after 15 min ischemia. Pretreatment with N-acetylcysteine, a free radical scavenger, effectively inhibited ERK5 activation in a dose-dependent manner. Consistently, ERK5 activation was significantly suppressed by genistein (protein-tyrosine kinase inhibitor), PP2 (specific inhibitor of Src family kinases), nifedipine (L-VGCC blocker) and dextromethorphan (NMDA receptor antagonist), but not 6,7-dinitroquinoxaline-2, 3(1H, 4H)-dione (AMPA receptor antagonist). These results suggested that ERK5 could be significantly activated by I/R, which might be mediated by NMDA receptor and L-VGCC through Src kinase pathway involving oxidative stress in rat hippocampus.

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KW - Src

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