Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?

More than a decade ago the novel concept that glial cells are major players in the modulation of pain mechanisms in the spinal cord has started a prolific series of work addressing the modalities of neuron-glia communication. Mike Salter with Kazuhide Inoue laboratories introduced ATP as pivotal med...

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Main Author: Marzia Malcangio
Format: Article
Language:English
Published: Elsevier 2017-01-01
Series:Neurobiology of Pain
Online Access:http://www.sciencedirect.com/science/article/pii/S2452073X17300016
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author Marzia Malcangio
author_facet Marzia Malcangio
author_sort Marzia Malcangio
collection DOAJ
description More than a decade ago the novel concept that glial cells are major players in the modulation of pain mechanisms in the spinal cord has started a prolific series of work addressing the modalities of neuron-glia communication. Mike Salter with Kazuhide Inoue laboratories introduced ATP as pivotal mediator for such communication via activation of P2X4 receptors expressed by microglia in the dorsal horn ipsilateral to a peripheral nerve injury. Activation of P2X4 receptors result in release of the neurotrophin BDNF, which, through the activation of neuronal TrkB receptors, alters neuronal excitability and this effect is associated with behavioural ipsilateral allodynia. This viewpoint article compares the evidence supporting a biological relevance of the P2X4 and BDNF system in neuropathic pain with recent data which question such importance. Having read this article, readers will be able to formulate their own opinion on such controversy.
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spelling doaj.art-4e09a29407c24bb89237392b093681da2022-12-21T23:25:13ZengElsevierNeurobiology of Pain2452-073X2017-01-01115Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?Marzia Malcangio0Wolfson Centre for Age Related Diseases, IoPPN, King’s College London, United KingdomMore than a decade ago the novel concept that glial cells are major players in the modulation of pain mechanisms in the spinal cord has started a prolific series of work addressing the modalities of neuron-glia communication. Mike Salter with Kazuhide Inoue laboratories introduced ATP as pivotal mediator for such communication via activation of P2X4 receptors expressed by microglia in the dorsal horn ipsilateral to a peripheral nerve injury. Activation of P2X4 receptors result in release of the neurotrophin BDNF, which, through the activation of neuronal TrkB receptors, alters neuronal excitability and this effect is associated with behavioural ipsilateral allodynia. This viewpoint article compares the evidence supporting a biological relevance of the P2X4 and BDNF system in neuropathic pain with recent data which question such importance. Having read this article, readers will be able to formulate their own opinion on such controversy.http://www.sciencedirect.com/science/article/pii/S2452073X17300016
spellingShingle Marzia Malcangio
Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?
Neurobiology of Pain
title Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?
title_full Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?
title_fullStr Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?
title_full_unstemmed Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?
title_short Spinal mechanisms of neuropathic pain: Is there a P2X4-BDNF controversy?
title_sort spinal mechanisms of neuropathic pain is there a p2x4 bdnf controversy
url http://www.sciencedirect.com/science/article/pii/S2452073X17300016
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