doi: 10.1016/s0165-5728(00)00285-x.
Expression of the chemokine receptor CXCR3 on neurons and the elevated expression of its ligand IP-10 in reactive astrocytes: in vitro ERK1/2 activation and role in Alzheimer's disease
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- PMID: 10900358
- DOI: 10.1016/s0165-5728(00)00285-x
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Expression of the chemokine receptor CXCR3 on neurons and the elevated expression of its ligand IP-10 in reactive astrocytes: in vitro ERK1/2 activation and role in Alzheimer's disease
J Neuroimmunol.
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Abstract
Inflammatory mediators have been implicated in the pathophysiology of neurodegenerative diseases. Here we report the presence of the chemokine receptor CXCR3 and its ligand, IP-10, in normal and Alzheimer's disease (AD) brains. CXCR3 was detected constitutively on neurons and neuronal processes in various cortical and subcortical regions; IP-10 was observed in a subpopulation of astrocytes in normal brain, and was markedly elevated in astrocytes in AD brains. Many IP-10(+) astrocytes were associated with senile plaques and had an apparently coordinated upregulation of MIP-1beta. Moreover, we showed that CXCR3 ligands, IP-10 and Mig, were able to activate ERK1/2 pathway in mouse cortical neurons, suggesting a novel mechanism of neuronal-glial interaction.
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