ATP Receptors of Microglia Involved in Pain

Kazuhide Inoue

研究成果: 書籍/レポート タイプへの寄稿


Microglia, activated when physiological homeostasis is threatened, play an important role as immune cells in the CNS. Activated microglia show a progressive series of changes in morphology, gene expression, function and number, and produce and release various chemical mediators, including proinflammatory cytokines that can produce immunological actions and modify neuronal function. Recently, accumulating evidence has indicated an important role for ATP receptors of activated microglia in neuropathic pain. Neuropathic pain is often a consequence of nerve injury through surgery, bone compression, cancer, diabetes or infection. The expression of the P2X4 receptor, a subtype of ATP receptors, is enhanced in spinal microglia in a peripheral nerve injury model, and blocking pharmacologically and suppressing molecularly P2X4 receptors produces a reduction of the neuropathic pain. Several cytokines such as interleukin 6 (IL6) and tumour necrosis factor α (TNFα) in the dorsal horn are also increased after nerve lesion and have been implicated in contributing to nerve-injury pain. ATP can activate mitogen-activated protein kinase (MAPK) leading to the release of bioactive substances including cytokines from microglia. Thus, diffusible factors released from activated microglia by the stimulation of purinergic receptors may have an important role in the development of neuropathic pain.

ホスト出版物のタイトルPurinergic Signalling in Neuron-Glia Interactions
ISBN(印刷版)0470018607, 9780470018606
出版ステータス出版済み - 10月 7 2008

!!!All Science Journal Classification (ASJC) codes

  • 生化学、遺伝学、分子生物学(全般)


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