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The chronic constriction injury model of neuropathic pain 

The chronic constriction injury model of neuropathic pain
The chronic constriction injury model of neuropathic pain

Matthew Brown

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date: 27 October 2021

The landmark paper discussed in this chapter is ‘A peripheral mononeuropathy in rat that produces disorders of pain sensation like those seen in man’, published by Bennett and Xie in 1988. This paper, in which the unilateral sciatic nerve chronic constriction injury (CCI) model was first presented, is one of the earliest and most comprehensive descriptions of a specific animal paradigm that was designed to model human neuropathic pain. The authors realized that human neuropathic pain rarely involves nerve transection but instead involves evoked changes in damaged and preserved nerve fibres. Furthermore, they systematically applied a barrage of sensory testing that demonstrated quantifiable hyperalgesia and cold allodynia reflecting some of the clinical observations of human neuropathic pain phenotype. CCI provided a high-quality template for the development of neuropathic pain models that impelled the subsequent development of other animal models striving to replicate the human condition faithfully and accurately.

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