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Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections

Current models of somatosensory perception emphasize transmission from primary sensory neurons to the spinal cord and on to the brain(1–4). Mental influence on perception is largely assumed to be acting locally within the brain. We have now examined if there is top-down control of sensory inflow thr...

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Autores principales: Liu, Yuanyuan, Latremoliere, Alban, Li, Xinjian, Zhang, Zicong, Chen, Mengying, Wang, Xuhua, Fang, Chao, Alexandre, Chloe, Gao, Zhongyang, Chen, Bo, Ding, Xin, Zhou, Jin-Yong, Zhang, Yiming, Chen, Chinfei, Wang, Kuan Hong, Woolf, Clifford J., He, Zhigang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6163083/
https://www.ncbi.nlm.nih.gov/pubmed/30209395
http://dx.doi.org/10.1038/s41586-018-0515-2
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author Liu, Yuanyuan
Latremoliere, Alban
Li, Xinjian
Zhang, Zicong
Chen, Mengying
Wang, Xuhua
Fang, Chao
Alexandre, Chloe
Gao, Zhongyang
Chen, Bo
Ding, Xin
Zhou, Jin-Yong
Zhang, Yiming
Chen, Chinfei
Wang, Kuan Hong
Woolf, Clifford J.
He, Zhigang
author_facet Liu, Yuanyuan
Latremoliere, Alban
Li, Xinjian
Zhang, Zicong
Chen, Mengying
Wang, Xuhua
Fang, Chao
Alexandre, Chloe
Gao, Zhongyang
Chen, Bo
Ding, Xin
Zhou, Jin-Yong
Zhang, Yiming
Chen, Chinfei
Wang, Kuan Hong
Woolf, Clifford J.
He, Zhigang
author_sort Liu, Yuanyuan
collection PubMed
description Current models of somatosensory perception emphasize transmission from primary sensory neurons to the spinal cord and on to the brain(1–4). Mental influence on perception is largely assumed to be acting locally within the brain. We have now examined if there is top-down control of sensory inflow through the spinal cord directly by the cortex. Although traditionally viewed as a primary motor pathway(5), a subset of corticospinal neurons (CSNs) originating in the S1/S2 somatosensory cortex directly innervate the spinal dorsal horn via corticospinal tract (CST) axons. We show here that either reduction in somatosensory CSN activity or transection of the CST selectively impairs behavioral responses to light touch without altering responses to noxious stimuli. Moreover, such CSN manipulation greatly attenuates tactile allodynia in a peripheral neuropathic pain model. Tactile stimulation activates somatosensory CSNs and their corticospinal projections facilitate light touch-evoked activity of cholecystokinin (CCK(+)) interneurons in the deep dorsal horn. This represents a touch-driven feed forward spinal-cortical-spinal sensitization loop, which is important for the recruitment of spinal nociceptive neurons under tactile allodynia. These results reveal direct cortical modulation of normal and pathological tactile sensory processing in the spinal cord and open up opportunities for new treatments for neuropathic pain.
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spelling pubmed-61630832019-03-12 Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections Liu, Yuanyuan Latremoliere, Alban Li, Xinjian Zhang, Zicong Chen, Mengying Wang, Xuhua Fang, Chao Alexandre, Chloe Gao, Zhongyang Chen, Bo Ding, Xin Zhou, Jin-Yong Zhang, Yiming Chen, Chinfei Wang, Kuan Hong Woolf, Clifford J. He, Zhigang Nature Article Current models of somatosensory perception emphasize transmission from primary sensory neurons to the spinal cord and on to the brain(1–4). Mental influence on perception is largely assumed to be acting locally within the brain. We have now examined if there is top-down control of sensory inflow through the spinal cord directly by the cortex. Although traditionally viewed as a primary motor pathway(5), a subset of corticospinal neurons (CSNs) originating in the S1/S2 somatosensory cortex directly innervate the spinal dorsal horn via corticospinal tract (CST) axons. We show here that either reduction in somatosensory CSN activity or transection of the CST selectively impairs behavioral responses to light touch without altering responses to noxious stimuli. Moreover, such CSN manipulation greatly attenuates tactile allodynia in a peripheral neuropathic pain model. Tactile stimulation activates somatosensory CSNs and their corticospinal projections facilitate light touch-evoked activity of cholecystokinin (CCK(+)) interneurons in the deep dorsal horn. This represents a touch-driven feed forward spinal-cortical-spinal sensitization loop, which is important for the recruitment of spinal nociceptive neurons under tactile allodynia. These results reveal direct cortical modulation of normal and pathological tactile sensory processing in the spinal cord and open up opportunities for new treatments for neuropathic pain. 2018-09-12 2018-09 /pmc/articles/PMC6163083/ /pubmed/30209395 http://dx.doi.org/10.1038/s41586-018-0515-2 Text en Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use: http://www.nature.com/authors/editorial_policies/license.html#terms Reprints and permissions information is available at www.nature.com/reprints.
spellingShingle Article
Liu, Yuanyuan
Latremoliere, Alban
Li, Xinjian
Zhang, Zicong
Chen, Mengying
Wang, Xuhua
Fang, Chao
Alexandre, Chloe
Gao, Zhongyang
Chen, Bo
Ding, Xin
Zhou, Jin-Yong
Zhang, Yiming
Chen, Chinfei
Wang, Kuan Hong
Woolf, Clifford J.
He, Zhigang
Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections
title Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections
title_full Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections
title_fullStr Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections
title_full_unstemmed Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections
title_short Touch and Tactile Neuropathic Pain Sensitivity Are Set by Corticospinal Projections
title_sort touch and tactile neuropathic pain sensitivity are set by corticospinal projections
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6163083/
https://www.ncbi.nlm.nih.gov/pubmed/30209395
http://dx.doi.org/10.1038/s41586-018-0515-2
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