Excitation and sensitization of nociceptors by bradykinin: What do we know?

Kazue Mizumura, Takeshi Sugiura, Kimiaki Katanosaka, Ratan K. Banik, Yasuko Kozaki

Research output: Contribution to journalReview articlepeer-review

60 Scopus citations

Abstract

Bradykinin is an endogenous nonapeptide known to induce pain and hyperalgesia to heat and mechanical stimulation. Correspondingly, it excites nociceptors in various tissues and sensitizes them to heat, whereas sensitizing effect on the mechanical response of nociceptors is not well established. Protein kinase C and TRPV1 contribute to the sensitizing mechanism of bradykinin to heat. In addition, TRPA1 and other ion channels appear to contribute to excitation caused by bradykinin. Finally, prostaglandins sensitize bradykinin-induced excitation in normal tissues by restoring desensitized responses due to the inhibition of protein kinase A.

Original languageEnglish (US)
Pages (from-to)53-65
Number of pages13
JournalExperimental Brain Research
Volume196
Issue number1
DOIs
StatePublished - Jun 1 2009

Keywords

  • Bradykinin
  • EP receptors
  • Excitation
  • Heat sensitization
  • Nociceptors
  • Prostaglandin
  • TRPV1
  • Tachyphylaxis

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