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Mechanistic Differences in Neuropathic Pain Modalities Revealed by Correlating Behavior with Global Expression Profiling.

Mechanistic Differences in Neuropathic Pain Modalities Revealed by Correlating Behavior with Global Expression Profiling.

Authors :
Cobos, Enrique J.
Nickerson, Chelsea A.
Gao, Fuying
Chandran, Vijayendran
Bravo-Caparrós, Inmaculada
Gonzélez-Cano, Rafael
Riva, Priscilla
Andrews, Nick A.
Latremoliere, Alban
Seehus, Corey R.
Perazzoli, Gloria
Nieto, Francisco R.
Joller, Nicole
Painter, Michio W.
Chi Him Eddie Ma
Takao Omura
Chesler, Elissa J.
Geschwind, Daniel H.
Coppola, Giovanni
Rangachari, Manu
Source :
Cell Reports; 1/30/2018, Vol. 22 Issue 5, p1301-1312, 12p
Publication Year :
2018

Abstract

Chronic neuropathic pain is amajor morbidity of neural injury, yet its mechanisms are incompletely understood. Hypersensitivity to previously non-noxious stimuli (allodynia) is a common symptom. Here, we demonstrate that the onset of cold hypersensitivity precedes tactile allodynia in a model of partial nerve injury and this temporal divergence was associated with major differences in global gene expression in innervating dorsal root ganglia. Transcripts whose expression change correlates with the onset of cold allodynia were nociceptor related, whereas those correlating with tactile hypersensitivity were immune cell centric. Ablation of TrpV1 lineage nociceptors resulted in mice that did not acquire cold allodynia but developed normal tactile hypersensitivity, whereas depletion of macrophages or T cells reduced neuropathic tactile allodynia but not cold hypersensitivity. We conclude that neuropathic pain incorporates reactive processes of sensory neurons and immune cells, each leading to distinct forms of hypersensitivity, potentially allowing drug development targeted to each pain type. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
26391856
Volume :
22
Issue :
5
Database :
Complementary Index
Journal :
Cell Reports
Publication Type :
Academic Journal
Accession number :
127941593
Full Text :
https://doi.org/10.1016/j.celrep.2018.01.006