Cited by 131Pain Mechanisms and TreatmentsIon Channels and ReceptorsNeuroscience and Neuropharmacology Research

Defining a Spinal Microcircuit that Gates Myelinated Afferent Input: Implications for Tactile Allodynia

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Boyle, Kieran A., Gradwell, Mark A., Yasaka, Toshiharu, Dickie, Allen C., Polgár, Erika, Ganley, Robert P., Orr, Desmond P.H., Watanabe, Masahiko +7 more·2019·Cell Reports

Abstract

Chronic pain presents a major unmet clinical problem. The development of more effective treatments is hindered by our limited understanding of the neuronal circuits underlying sensory perception. Here, we show that parvalbumin (PV)-expressing dorsal horn interneurons modulate the passage of sensory information conveyed by low-threshold mechanoreceptors (LTMRs) directly via presynaptic inhibition and also gate the polysynaptic relay of LTMR input to pain circuits by inhibiting lamina II excitatory interneurons whose axons project into lamina I. We show changes in the functional properties of these PV interneurons following peripheral nerve injury and that silencing these cells unmasks a circuit that allows innocuous touch inputs to activate pain circuits by increasing network activity in laminae I-IV. Such changes are likely to result in the development of tactile allodynia and could be targeted for more effective treatment of mechanical pain.

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Crossref · 10.1016/j.celrep.2019.06.040

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  • The Cdh3 dorsal inhibitory family comprised Inhib-6, Inhib-7, and Inhib-8 and are likely involved in dampening of dynamic touch and mechanical allodynia.

    “The Cdh3 dorsal, inhibitory family was comprised of Inhib-6, Inhib-7, and Inhib-8 and are likely to be involved in the dampening of dynamic touch and therefore in mechanical allodynia70–72.”

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Authors
Boyle, K. A., Gradwell, M. A., Yasaka, T., Dickie, A. C., Polgár, E., Ganley, R. P., Orr, D. P. H., Watanabe, M., Abraira, V. E., Kuehn, E. D., Zimmerman, A. L., Ginty, D. D., Callister, R. J., Graham, B. A., & Hughes, D. I.
Affiliations
  • University of Glasgow (GB)
  • University of Newcastle Australia (AU)
  • Saga University (JP)
  • Hokkaido University (JP)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Graham, Brett A.
  • Hughes, David I.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2019-07
Volume
28
Issue
2
Pages
526-540.e6
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2961172235
Cited by
131
References
67
Citations by year
2026: 18 · 2025: 12 · 2024: 17 · 2023: 22 · 2022: 26 · 2021: 14 · 2020: 20 · 2019: 2
FWCI
10.63
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by)
  • SSRN Electronic Journal (acceptedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion, cc-by-sa)
  • Rutgers University Community Repository (Rutgers University) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • NOVA (University of Newcastle Australia) (submittedVersion, cc-by)
Funders
  • National Institutes of Health
  • National Health and Medical Research Council
  • Japan Society for the Promotion of Science
  • Biotechnology and Biological Sciences Research Council
Topics
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
mechanical allodynia, parvalbumin interneurons, dorsal horn, presynaptic inhibition, low-threshold mechanoreceptors, peripheral nerve injury, chronic pain, mechanical pain, nociceptive circuits
MeSH terms
Animals, Hyperalgesia, Mechanoreceptors, Myelin Sheath, Mice, Chronic Pain

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