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Pro-neurotrophins, sortilin, and nociception

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Item Type:Review
Title:Pro-neurotrophins, sortilin, and nociception
Creators Name:Lewin, G.R. and Nykjaer, A.
Abstract:Nerve growth factor (NGF) signaling is important in the development and functional maintenance of nociceptors, but it also plays a central role in initiating and sustaining heat and mechanical hyperalgesia following inflammation. NGF signaling in pain has traditionally been thought of as primarily engaging the classic high-affinity receptor tyrosine kinase receptor TrkA to initiate sensitization events. However, the discovery that secreted proforms of nerve NGF have biological functions distinct from the processed mature factors raised the possibility that these proneurotrophins (proNTs) may have distinct function in painful conditions. ProNTs engage a novel receptor system that is distinct from that of mature neurotrophins, consisting of sortilin, a type I membrane protein belonging to the VPS10p family, and its co-receptor, the classic low-affinity neurotrophin receptor p75NTR. Here, we review how this new receptor system may itself function with or independently of the classic TrkA system in regulating inflammatory or neuropathic pain.
Keywords:Mechanical Hyperalgesia, Neuropathic Pain and Inflammation, NGF, p75NTR, TRPV1, Animals
Source:European Journal of Neuroscience
ISSN:0953-816X
Publisher:Wiley-Blackwell (U.K.)
Volume:39
Number:3
Page Range:363-374
Date:February 2014
Official Publication:https://doi.org/10.1111/ejn.12466
PubMed:View item in PubMed

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