TRPV1 antagonists as a potential treatment for hyperalgesia

Louise A. Roberts*, Mark Connor

*Corresponding author for this work

Research output: Contribution to journalReview article

53 Citations (Scopus)

Abstract

The vanilloid receptor (TRPV1) is a member of the transient receptor potential family of ion channels that is highly expressed in nociceptive primary afferent sensory neurons. TRPV1 is a voltage-dependent cation channel, which can be activated at physiological membrane potentials by stimuli including noxious heat (>42 degrees), capsaicin, hydrogen ions and anandamide. Activation of TRPV1 results in release of neurotransmitters from peripheral and central nerve terminals, resulting in pain and inflammation. Endogenous inflammatory mediators also promote activation of TRPV1. Studies in TRPV1 null mice reveal that responses to noxious heat stimuli are normal but the development of thermal hyperalgesia is abolished. Several TRPV1 antagonists have recently been developed and reported to alleviate or reverse mechanical and thermal hyperalgesia associated with inflammatory pain. This review will examine the development of patented TRPV1 antagonists as a potential clinical treatment for the alleviation of pain associated with hyperalgesia and inflammation.

Original languageEnglish
Pages (from-to)65-76
Number of pages12
JournalRecent patents on CNS drug discovery
Volume1
Issue number1
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

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