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- B J Kerr, V Souslova, S B McMahon, and J N Wood.
- Centre for Neuroscience Research, Guy's, King's and St Thomas' School of Biomedical Sciences, Kings College, London SE1 1UL, UK.
- Neuroreport. 2001 Oct 8;12(14):3077-80.
AbstractThe tetrodotoxin-resistant voltage-gated sodium channel Nav 1.8 is expressed only in nociceptive sensory neurons. This channel has been proposed to contribute significantly to the sensitization of primary sensory neurons after injury. We have studied the nociceptive behaviours of mice carrying a null mutation in the Nav 1.8 gene (Nav 1.8 -/-) in models of peripheral inflammation as well as a model of neuropathic pain. The results from the present studies reveal that Nav 1.8 is a necessary mediator of NGF-induced thermal hyperalgesia but is not essential for PGE2-evoked hypersensitivity. Neuropathic pain behaviours were unchanged in Nav 1.8 -/- mice indicating that this channel is not involved in the alteration of sensory thresholds following peripheral nerve injury.
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