Pronociceptive actions of dynorphin via bradykinin receptors

Josephine Lai, Miaw chyi Luo, Qingmin Chen, Frank Porreca

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


The endogenous opioid peptide dynorphin A is distinct from other endogenous opioid peptides in having significant neuronal excitatory and neurotoxic effects that are not mediated by opioid receptors. Some of these non-opioid actions of dynorphin contribute to the development of abnormal pain resulting from a number of pathological conditions. Identifying the mechanisms and the sites of action of dynorphin is essential for understanding the pathophysiology of dynorphin and for exploring novel therapeutic targets for pain. This review will discuss the mechanisms that have been proposed and the recent finding that spinal dynorphin may be an endogenous ligand of bradykinin receptors under pathological conditions to promote pain.

Original languageEnglish (US)
Pages (from-to)175-179
Number of pages5
JournalNeuroscience Letters
Issue number3
StatePublished - Jun 6 2008


  • Dorsal root ganglion
  • G protein coupled receptor
  • Inflammatory pain
  • Kininogen
  • Kinins
  • Neuropathic pain
  • Opioid
  • Sensory neuron
  • Voltage gated calcium channels

ASJC Scopus subject areas

  • General Neuroscience


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