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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...

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The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
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Published on: July 16, 2014

New therapy for neuropathic pain.

Hirokazu Mizoguchi1, Chizuko Watanabe, Akihiko Yonezawa

  • 1Department of Physiology and Anatomy, Tohoku Pharmaceutical University, Sendai 981-8558, Japan.

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Neuropathic pain, often resistant to traditional opioids like morphine, involves complex neural changes. Oxycodone shows promise for managing this pain due to its distinct pharmacological profile.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Pain Management

Background:

  • Neuropathic pain, including nerve injury, diabetic, and cancer pain, is characterized by tactile allodynia and hyperalgesia.
  • This pain is often opioid-resistant due to mu-opioid receptor downregulation in the dorsal spinal cord, potentially mediated by NMDA receptor activation.
  • Increased expression of voltage-dependent Na+ and Ca2+ channels is observed in neuropathic pain states.

Purpose of the Study:

  • To explore the effectiveness of novel drug treatments for neuropathic pain.
  • To investigate the potential of mu-opioid receptor agonists with different pharmacological profiles for managing neuropathic pain.

Main Methods:

  • Review of existing literature on neuropathic pain pathophysiology and treatment.
  • Analysis of the pharmacological profiles of ketamine, methadone, gabapentin, and oxycodone in the context of neuropathic pain.

Main Results:

  • Ketamine, methadone, and gabapentin demonstrate significant effectiveness against hyperalgesia and allodynia in neuropathic pain.
  • Oxycodone, a mu-opioid receptor agonist with a distinct profile from morphine, shows remarkable effectiveness in managing neuropathic pain.

Conclusions:

  • Novel drugs like ketamine, methadone, and gabapentin offer effective treatment options for neuropathic pain.
  • Mu-opioid receptor agonists with differing pharmacological profiles from morphine, such as oxycodone, present a viable strategy for neuropathic pain management.