Resveratrol reduces glutamate-mediated monocyte chemotactic protein-1 expression via inhibition of extracellular signal-regulated kinase 1/2 pathway in rat hippocampal slice cultures

Eun Ok Lee, Hee Ju Park, Jihee Lee Kang, Hye Sun Kim, Young Hae Chong

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26 Citations (Scopus)

Abstract

Published evidence has linked glutamate with the pathogenesis of Alzheimer's disease (AD) and the up-regulation of a variety of chemokines, including monocyte chemotactic protein-1 (MCP-1)/chemokine ligand 2, with AD-associated pathological changes. In this study, we assessed the potential molecular basis for the role of glutamate in hippocampal inflammation by determining its effects on MCP-1 induction. We also attempted to identify the mechanism by which resveratrol (trans-3,5,4′-trihydroxystilbene), a polyphenolic phytostilbene, modulates the expression of MCP-1 in the glutamate-stimulated hippocampus. An ex vivo study using rat hippocampal slices demonstrated a time- and dose-dependent increase in MCP-1 release from glutamate-exposed hippocampus. This increase was accompanied by enhanced MCP-1 gene expression via the activation of the MEK/extracellular signal-regulated kinase (ERK) pathway and interleukin-1β (IL-1β) expression. The inhibition of the MEK/ERK pathway with SL327, which is capable of crossing the blood-brain barrier, nearly abolished the observed glutamate-induced effects. Furthermore, anti-IL-1β antibodies suppressed the glutamate-induced expression of MCP-1 mRNA and protein, whereas an isotype-matched antibody exerted only minimal effects. It is worthy of note that resveratrol, to a similar degree as SL327, down-regulated glutamate-induced IL-1β expression and reduced the expression of MCP-1 mRNA and protein release via the inactivation of ERK1/2. These results indicate that the activation of the MEK/ERK pathway and the consequent IL-1β expression are essential for glutamate-stimulated MCP-1 production in the hippocampus. Additionally, our data reveal an anti-inflammatory mechanism of resveratrol involving the inactivation of the ERK1/2 pathway in the hippocampus, which is linked principally to AD-associated cognitive dysfunction.

Original languageEnglish
Pages (from-to)1477-1488
Number of pages12
JournalJournal of Neurochemistry
Volume112
Issue number6
DOIs
StatePublished - 1 Mar 2010

Fingerprint

Mitogen-Activated Protein Kinase 3
Chemokine CCL2
Mitogen-Activated Protein Kinase 1
Rats
Glutamic Acid
Interleukin-1
Hippocampus
Mitogen-Activated Protein Kinase Kinases
Extracellular Signal-Regulated MAP Kinases
Chemokines
Alzheimer Disease
Chemical activation
Messenger RNA
resveratrol
Inhibition (Psychology)
MAP Kinase Signaling System
Antibodies
Blood-Brain Barrier
Gene expression
Proteins

Keywords

  • Alzheimer's disease
  • Extracellular signal-regulated kinase 1/2
  • Glutamate
  • Interleukin-1β
  • Monocyte chemoattractant protein-1
  • Resveratrol

Cite this

@article{10d275f6315540eb9f2e5201c516a048,
title = "Resveratrol reduces glutamate-mediated monocyte chemotactic protein-1 expression via inhibition of extracellular signal-regulated kinase 1/2 pathway in rat hippocampal slice cultures",
abstract = "Published evidence has linked glutamate with the pathogenesis of Alzheimer's disease (AD) and the up-regulation of a variety of chemokines, including monocyte chemotactic protein-1 (MCP-1)/chemokine ligand 2, with AD-associated pathological changes. In this study, we assessed the potential molecular basis for the role of glutamate in hippocampal inflammation by determining its effects on MCP-1 induction. We also attempted to identify the mechanism by which resveratrol (trans-3,5,4′-trihydroxystilbene), a polyphenolic phytostilbene, modulates the expression of MCP-1 in the glutamate-stimulated hippocampus. An ex vivo study using rat hippocampal slices demonstrated a time- and dose-dependent increase in MCP-1 release from glutamate-exposed hippocampus. This increase was accompanied by enhanced MCP-1 gene expression via the activation of the MEK/extracellular signal-regulated kinase (ERK) pathway and interleukin-1β (IL-1β) expression. The inhibition of the MEK/ERK pathway with SL327, which is capable of crossing the blood-brain barrier, nearly abolished the observed glutamate-induced effects. Furthermore, anti-IL-1β antibodies suppressed the glutamate-induced expression of MCP-1 mRNA and protein, whereas an isotype-matched antibody exerted only minimal effects. It is worthy of note that resveratrol, to a similar degree as SL327, down-regulated glutamate-induced IL-1β expression and reduced the expression of MCP-1 mRNA and protein release via the inactivation of ERK1/2. These results indicate that the activation of the MEK/ERK pathway and the consequent IL-1β expression are essential for glutamate-stimulated MCP-1 production in the hippocampus. Additionally, our data reveal an anti-inflammatory mechanism of resveratrol involving the inactivation of the ERK1/2 pathway in the hippocampus, which is linked principally to AD-associated cognitive dysfunction.",
keywords = "Alzheimer's disease, Extracellular signal-regulated kinase 1/2, Glutamate, Interleukin-1β, Monocyte chemoattractant protein-1, Resveratrol",
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Resveratrol reduces glutamate-mediated monocyte chemotactic protein-1 expression via inhibition of extracellular signal-regulated kinase 1/2 pathway in rat hippocampal slice cultures. / Lee, Eun Ok; Park, Hee Ju; Kang, Jihee Lee; Kim, Hye Sun; Chong, Young Hae.

In: Journal of Neurochemistry, Vol. 112, No. 6, 01.03.2010, p. 1477-1488.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Resveratrol reduces glutamate-mediated monocyte chemotactic protein-1 expression via inhibition of extracellular signal-regulated kinase 1/2 pathway in rat hippocampal slice cultures

AU - Lee, Eun Ok

AU - Park, Hee Ju

AU - Kang, Jihee Lee

AU - Kim, Hye Sun

AU - Chong, Young Hae

PY - 2010/3/1

Y1 - 2010/3/1

N2 - Published evidence has linked glutamate with the pathogenesis of Alzheimer's disease (AD) and the up-regulation of a variety of chemokines, including monocyte chemotactic protein-1 (MCP-1)/chemokine ligand 2, with AD-associated pathological changes. In this study, we assessed the potential molecular basis for the role of glutamate in hippocampal inflammation by determining its effects on MCP-1 induction. We also attempted to identify the mechanism by which resveratrol (trans-3,5,4′-trihydroxystilbene), a polyphenolic phytostilbene, modulates the expression of MCP-1 in the glutamate-stimulated hippocampus. An ex vivo study using rat hippocampal slices demonstrated a time- and dose-dependent increase in MCP-1 release from glutamate-exposed hippocampus. This increase was accompanied by enhanced MCP-1 gene expression via the activation of the MEK/extracellular signal-regulated kinase (ERK) pathway and interleukin-1β (IL-1β) expression. The inhibition of the MEK/ERK pathway with SL327, which is capable of crossing the blood-brain barrier, nearly abolished the observed glutamate-induced effects. Furthermore, anti-IL-1β antibodies suppressed the glutamate-induced expression of MCP-1 mRNA and protein, whereas an isotype-matched antibody exerted only minimal effects. It is worthy of note that resveratrol, to a similar degree as SL327, down-regulated glutamate-induced IL-1β expression and reduced the expression of MCP-1 mRNA and protein release via the inactivation of ERK1/2. These results indicate that the activation of the MEK/ERK pathway and the consequent IL-1β expression are essential for glutamate-stimulated MCP-1 production in the hippocampus. Additionally, our data reveal an anti-inflammatory mechanism of resveratrol involving the inactivation of the ERK1/2 pathway in the hippocampus, which is linked principally to AD-associated cognitive dysfunction.

AB - Published evidence has linked glutamate with the pathogenesis of Alzheimer's disease (AD) and the up-regulation of a variety of chemokines, including monocyte chemotactic protein-1 (MCP-1)/chemokine ligand 2, with AD-associated pathological changes. In this study, we assessed the potential molecular basis for the role of glutamate in hippocampal inflammation by determining its effects on MCP-1 induction. We also attempted to identify the mechanism by which resveratrol (trans-3,5,4′-trihydroxystilbene), a polyphenolic phytostilbene, modulates the expression of MCP-1 in the glutamate-stimulated hippocampus. An ex vivo study using rat hippocampal slices demonstrated a time- and dose-dependent increase in MCP-1 release from glutamate-exposed hippocampus. This increase was accompanied by enhanced MCP-1 gene expression via the activation of the MEK/extracellular signal-regulated kinase (ERK) pathway and interleukin-1β (IL-1β) expression. The inhibition of the MEK/ERK pathway with SL327, which is capable of crossing the blood-brain barrier, nearly abolished the observed glutamate-induced effects. Furthermore, anti-IL-1β antibodies suppressed the glutamate-induced expression of MCP-1 mRNA and protein, whereas an isotype-matched antibody exerted only minimal effects. It is worthy of note that resveratrol, to a similar degree as SL327, down-regulated glutamate-induced IL-1β expression and reduced the expression of MCP-1 mRNA and protein release via the inactivation of ERK1/2. These results indicate that the activation of the MEK/ERK pathway and the consequent IL-1β expression are essential for glutamate-stimulated MCP-1 production in the hippocampus. Additionally, our data reveal an anti-inflammatory mechanism of resveratrol involving the inactivation of the ERK1/2 pathway in the hippocampus, which is linked principally to AD-associated cognitive dysfunction.

KW - Alzheimer's disease

KW - Extracellular signal-regulated kinase 1/2

KW - Glutamate

KW - Interleukin-1β

KW - Monocyte chemoattractant protein-1

KW - Resveratrol

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DO - 10.1111/j.1471-4159.2009.06564.x

M3 - Article

VL - 112

SP - 1477

EP - 1488

JO - Journal of Neurochemistry

JF - Journal of Neurochemistry

SN - 0022-3042

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ER -