Suppression of Pain in the Late Phase of Chronic Trigeminal Neuropathic Pain Failed to Rescue the Decision-Making Deficits in Rats.
anterior cingulate cortex
chronic constriction injury
cognitive deficits
decision making
early or late phase
riluzole
synaptic plasticity
tetrodotoxin
theta oscillations
trigeminal neuropathic pain
Journal
International journal of molecular sciences
ISSN: 1422-0067
Titre abrégé: Int J Mol Sci
Pays: Switzerland
ID NLM: 101092791
Informations de publication
Date de publication:
22 Jul 2021
22 Jul 2021
Historique:
received:
06
07
2021
revised:
19
07
2021
accepted:
19
07
2021
entrez:
7
8
2021
pubmed:
8
8
2021
medline:
17
8
2021
Statut:
epublish
Résumé
Trigeminal neuropathic pain (TNP) led to vital cognitive functional deficits such as impaired decision-making abilities in a rat gambling task. Chronic TNP caused hypomyelination in the anterior cingulate cortex (ACC) associated with decreased synchronization between ACC spikes and basal lateral amygdala (BLA) theta oscillations. The aim of this study was to investigate the effect of pain suppression on cognitive impairment in the early or late phases of TNP. Blocking afferent signals with a tetrodotoxin (TTX)-ELVAX implanted immediately following nerve lesion suppressed the allodynia and rescued decision-making deficits. In contrast, the TTX used at a later phase could not suppress the allodynia nor rescue decision-making deficits. Intra-ACC administration of riluzole reduced the ACC neural sensitization but failed to restore ACC-BLA spike-field phase synchrony during the late stages of chronic neuropathic pain. Riluzole suppressed allodynia but failed to rescue the decision-making deficits during the late phase of TNP, suggesting that early pain relief is important for recovering from pain-related cognitive impairments. The functional disturbances in ACC neural circuitry may be relevant causes for the deficits in decision making in the chronic TNP state.
Identifiants
pubmed: 34360612
pii: ijms22157846
doi: 10.3390/ijms22157846
pmc: PMC8346079
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Research Grants Council, University Grants Committee
ID : 11102820, 11100018, 11100914, 11166116, 11101315, and 160713
Organisme : National Natural Science Foundation of China (NSFC) and RGC Joint Research Scheme
ID : 3171101014, N_CityU114/17
Organisme : Innovation and Technology Fund Hong Kong
ID : CityU 9445909
Organisme : Shenzhen-Hong Kong Institute of Brain Science Innovation Open Project Contract
ID : NYKFKT2019012
Organisme : Health and Medical Research Fund
ID : 05160256
Organisme : City University of Hong Kong Neuroscience Research Infrastructure Grant
ID : 9610211
Organisme : City University of Hong Kong Centre for Biosystems, Neuroscience, and Nanotechnology Grant
ID : 9360148
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