Adult-age inflammatory pain experience enhances long-term pain vigilance in rats.

PloS One
Sheng-Guang LiFei Luo

Abstract

Previous animal studies have illustrated a modulatory effect of neonatal pain experience on subsequent pain-related behaviors. However, the relationship between chronic pain status in adulthood and future pain perception remains unclear. In the current study, we investigated the effects of inflammatory pain experience on subsequent formalin-evoked pain behaviors and fear conditioning induced by noxious stimulation in adult rats. Our results demonstrated an increase of the second but not the first phase of formalin-induced pain behaviors in animals with a history of inflammatory pain that have recovered. Similarly, rats with persistent pain experience displayed facilitated acquisition and prolonged retention of pain-related conditioning. These effects of prior pain experience on subsequent behavior were prevented by repeated morphine administration at an early stage of inflammatory pain. These results suggest that chronic pain diseases, if not properly and promptly treated, may have a long-lasting impact on processing and perception of environmental threats. This may increase the susceptibility of patients to subsequent pain-related disorders, even when chronic pain develops in adulthood. These data highlight the importance of t...Continue Reading

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Citations

Sep 30, 2014·Peptides·Richard J Bodnar
May 21, 2016·Frontiers in Computational Neuroscience·Yifei GuoJin-Yan Wang
Oct 14, 2016·Frontiers in Behavioral Neuroscience·Ning WangFei Luo
Aug 3, 2017·Issues in Mental Health Nursing·Aude PaquetMurielle Girard

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