Physiopathological Roles of P2X Receptors in the Central Nervous System

ISSN: 1875-533X (Online)
ISSN: 0929-8673 (Print)

Volume 22, 38 Issues, 2015

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Atta-ur-Rahman, FRS
Honorary Life Fellow
Kings College
University of Cambridge

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Physiopathological Roles of P2X Receptors in the Central Nervous System

Author(s): Geoffrey Burnstock

Affiliation: University College Medical School, United Kingdom


Potent actions of ATP in the central nervous system (CNS) were reported in the late 1940’s, but cloning and characterisation of receptors for purines and pyrimidines did not take place until the early 1990’s, which identified seven P2X ion channel receptor subtypes, three of which form the cation channel as homomultimers or heteromultimers. P2X receptor subtypes are widely expressed in the CNS and their distribution is described in different regions. They function in synaptic cotransmission and neuromodulation, as well as in trophic signalling. ATP released from nerves and astroglial cells are predominantly involved in neuron-glial interactios. Purinergic signalling is involved in normal behaviour, including learning and memory, sleep and arousal, locomotor and feeding activities and cognition. P2X receptors participate in CNS pathophysiology, including injury, inflammation, Alzheimer’s and Parkinson’s diseases, multiple sclerosis and amyotrophic lateral sclerosis, depression and anxiety. P2X4 and P2X7 receptor antagonists are effective via microglia against neuropathic pain, while P2X3 receptor antagonists also reduce neuropathic pain, but via a differernt mechanism

Keywords: ATP, brain stem, glia, glutamate, hippocampus, memory, neurodegenerative diseases, neuropathic pain, neuroprotection, spinal cord

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Article Details

Volume: 21
First Page: 1
Last Page: 28
Page Count: 28
DOI: 10.2174/0929867321666140706130415

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