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Related Experiment Video

Updated: Oct 4, 2025

Establishing a Mouse Model of a Pure Small Fiber Neuropathy with the Ultrapotent Agonist of Transient Receptor Potential Vanilloid Type 1
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TRPV1 in Pain and Itch.

Fengxian Li1, Fang Wang2

  • 1Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, China. lifengxian81@outlook.com.

Advances in Experimental Medicine and Biology
|February 9, 2022
PubMed
Summary

Transient receptor potential vanilloid type 1 (TRPV1) channels in sensory neurons are key to transmitting pain and itch signals. Understanding TRPV1 modulation offers new therapeutic strategies for related diseases.

Keywords:
ItchPainSensory neuronsTRPV1

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pharmacology

Background:

  • Transient receptor potential vanilloid type 1 (TRPV1) is a nonselective cation channel highly expressed in the peripheral nervous system.
  • TRPV1 channels are crucial for transmitting pain and itch signals from peripheral sensory neurons to the central nervous system.
  • Altered TRPV1 channel activity and hypersensitivity are observed in various pathological conditions.

Purpose of the Study:

  • To highlight the critical role of TRPV1 and its associated neurons in sensing pain and itch.
  • To review the fundamental understanding of TRPV1's involvement in nociception, pruriception, and neurogenic inflammation.
  • To explore cell-specific modulation of TRPV1 for developing effective therapeutic strategies.

Main Methods:

  • Review of existing literature on TRPV1 channel structure, activity, and modulation.
  • Analysis of studies investigating TRPV1-expressing neurons in pain and itch signaling.
  • Examination of TRPV1's role in neuroimmune crosstalk and central nervous system projections.

Main Results:

  • TRPV1 channels are integral to the transmission of pain and itch signals.
  • TRPV1-expressing sensory neurons mediate neuroimmune crosstalk via neuropeptide release.
  • TRPV1+ terminals in the central nervous system synapse with secondary neurons for signal transmission.

Conclusions:

  • TRPV1 and associated neurons are significant players in pain and itch perception.
  • A deeper understanding of TRPV1's function in nociception, pruriception, and inflammation is essential.
  • Targeting TRPV1 offers potential for novel treatments for pain- and itch-related disorders.