Tumor necrosis factor-alpha modulates glutamate transport in the CNS and is a critical determinant of outcome from viral encephalomyelitis.
Tumor necrosis factor-alpha modulates glutamate transport in the CNS and is a critical determinant of outcome from viral encephalomyelitis.
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DOI:
10.1016/j.brainres.2009.01.040
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发表时间:
2009-03-31
期刊:
影响因子:
2.9
通讯作者:
Kerr DA
中科院分区:
文献类型:
--
作者:
Carmen J;Rothstein JD;Kerr DA
Neuroadapted Sindbis virus (NSV) is a neuronotropic virus that causes a fulminant encephalomyelitis in susceptible mice due to death of motor neurons in the brain and spinal cord. We and others have found that uninfected motor neurons die in response to NSV infection, at least in part due to disrupted astrocytic glutamate transport, resulting in excitotoxic motor neuron death. Here, we examined the mechanisms of astrocyte dysregulation associated with NSV infection. Treatment of organotypic slice cultures with NSV results in viral replication, cell death, altered astrocyte morphology, and the downregulation of the astrocytic glutamate transporter, GLT-1. We have found that TNF-α can mediate GLT-1 downregulation. Furthermore, TNF-α deficient mice infected with NSV exhibit neither GLT-1 downregulation nor neuronal death of brainstem and cervical spinal cord motor neurons and have markedly reduced mortality. These findings have implications for disease intervention and therapeutic development for the prevention of CNS damage associated with inflammatory responses.
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影响因子:
5.3
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Darman, J;Backovic, S;Kerr, DA
通讯作者:
Kerr, DA
影响因子:
11.2
作者:
Nargi-Aizenman, JL;Havert, MB;Griffin, DE
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Griffin, DE
DOI:
10.1073/pnas.0712390105
发表时间:
2008-03-04
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11.1
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Griffin, Diane E.
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Volterra, A
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Nargi-Aizenman, JL;Griffin, DE
通讯作者:
Griffin, DE