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[Pain, fever and prostanoids].

Y Kuraishi1, F Ushikubi

  • 1Department of Applied Pharmacology, Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Toyama 930-0194, Japan. kuraisiy@ms.toyama-mpu.ac.jp

Nihon Yakurigaku Zasshi. Folia Pharmacologica Japonica
|May 8, 2001
PubMed
Summary

Prostanoids regulate pain and fever, with EP3 receptor deficiency abolishing fever responses. Studies using knockout mice reveal prostanoid roles in inflammatory and neuropathic pain, offering potential analgesic targets.

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Area of Science:

  • Pharmacology
  • Neuroscience
  • Immunology

Context:

  • Prostanoids are implicated in pain and fever, but their receptor functions remain incompletely understood.
  • Recent advancements include cloning all prostanoid receptors and developing receptor-deficient mouse models.

Purpose:

  • To elucidate the specific roles of prostanoid receptors in pain and fever regulation.
  • To investigate the involvement of prostanoids in inflammatory, neuropathic pain, and pyresis.

Summary:

  • Mice lacking the IP receptor showed abolished nociceptive responses to acetic acid and carrageenan-induced hyperalgesia.
  • Prostaglandin E2 (PGE2) induced fever in wild-type mice but not in EP3 receptor-deficient mice.
  • EP3 receptor deficiency suppressed fever induced by IL-1 beta and LPS, indicating PGE2 as a common mediator acting via the EP3 receptor.

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Impact:

  • Findings highlight the critical role of the EP3 receptor in mediating PGE2-induced fever.
  • This research may lead to novel antipyretic analgesics with improved safety profiles by targeting specific prostanoid pathways.