期刊
EXPERIMENTAL PHYSIOLOGY
卷 90, 期 5, 页码 663-670出版社
WILEY
DOI: 10.1113/expphysiol.2005.030734
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Increasing attention is being paid to the role of inflammatory and immune molecules in the modulation of central nervous system (CNS) function. Tumour necrosis factor-alpha (TNF-alpha) is a pro-inflammatory cytokine, the receptors for which are expressed on neurones and glial cells throughout the CNS. Through the action of its two receptors, it has a broad range of actions on neurones which may be either neuroprotective or neurotoxic. It plays a facilitatory role in glutamate excitotoxicity, both directly and indirectly by inhibiting glial glutamate transporters on astrocytes. Additionally, TNF-alpha has direct effects on glutamate transmission, for example increasing expression of AMPA receptors on synapses. TNF-alpha also plays a role in synaptic plasticity, inhibiting long-term potentiation (LTP), a process dependent on p38 mitogen activated kinase (p38 MAP) kinase. In the following review we look at these and other effects of TNF-alpha in the CNS.
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