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The effect of spontaneous osteoarthritis on conditioned pain modulation in the canine model.


ABSTRACT: Endogenous Pain Modulation (EPM) impairment is a significant contributor to chronic pain. Conditioned pain modulation (CPM) testing assesses EPM function. Osteoarthritic (OA) dogs are good translational models, but CPM has not been explored. Our aim was to assess EPM impairment in OA dogs compared to controls using CPM. We hypothesized that CPM testing would demonstrate EPM impairment in OA dogs compared to controls. Dogs with stifle/hip OA and demographically-matched controls were recruited. The pre-conditioning test stimulus, using mechanical/thermal quantitative sensory testing (MQST or TQST), were performed at the metatarsus. A 22N blunt probe (conditioning stimulus) was applied to the contralateral antebrachium for 2?minutes, followed by MQST or TQST (post-conditioning test stimulus). The threshold changes from pre to post-conditioning (?MQST and ?TQST) were compared between OA and control dogs. Twenty-four client-owned dogs (OA, n?=?11; controls, n?=?13) were recruited. The ?MQST(p?

SUBMITTER: Chiu KW 

PROVIDER: S-EPMC6997173 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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The effect of spontaneous osteoarthritis on conditioned pain modulation in the canine model.

Chiu King Wa KW   Hash Jon J   Meyers Rachel R   Lascelles B Duncan X BDX  

Scientific reports 20200203 1


Endogenous Pain Modulation (EPM) impairment is a significant contributor to chronic pain. Conditioned pain modulation (CPM) testing assesses EPM function. Osteoarthritic (OA) dogs are good translational models, but CPM has not been explored. Our aim was to assess EPM impairment in OA dogs compared to controls using CPM. We hypothesized that CPM testing would demonstrate EPM impairment in OA dogs compared to controls. Dogs with stifle/hip OA and demographically-matched controls were recruited. Th  ...[more]

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