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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

552
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...
552

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Peripheral Rho-associated protein kinase activation mediates acupuncture analgesia.

Ji-Yeun Park1, Jae-Hwan Jang2, Yang-Hwa Kang3

  • 1College of Korean Medicine, Daejeon University, Daejeon, Republic of Korea.

Integrative Medicine Research
|September 2, 2024
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Summary

Acupuncture activates Rho-associated protein kinase 2 (ROCK2) in skin fibroblasts, which is crucial for pain relief. This ROCK2 activation is downstream of extracellular signal-regulated kinase (ERK) and mediates acupuncture analgesia.

Keywords:
AcupunctureAnalgesiaMolecular mechanismPeripheralRho associated protein kinase

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Area of Science:

  • Neuroscience
  • Pain Management
  • Molecular Biology

Background:

  • Acupuncture is effective for pain relief, with peripheral molecular signals implicated.
  • The precise mechanism linking peripheral signals to central analgesia remains unclear.
  • Investigating Rho-associated protein kinase (ROCK) and extracellular signal-regulated kinase (ERK) pathways is key to understanding acupuncture's effects.

Purpose of the Study:

  • To determine if peripheral ROCK activation mediates acupuncture analgesia.
  • To explore the relationship between ROCK and ERK activation in acupuncture.
  • To elucidate the molecular mechanisms of acupuncture-induced pain relief.

Main Methods:

  • Acupuncture was applied to GB34 acupoints in C57BL/6 mice.
  • ROCK activation and expression were analyzed in skin tissue.
  • ROCK inhibitor (Y-27632) was administered to assess its effect on acupuncture analgesia in pain models (formalin and CFA).

Main Results:

  • Acupuncture induced ROCK2 activation in skin fibroblasts within 30-60 minutes.
  • ERK inhibition attenuated acupuncture-induced ROCK2 expression, but ROCK inhibition did not affect phospho-ERK.
  • ROCK inhibition blocked acupuncture analgesia in both formalin and CFA pain models.

Conclusions:

  • Acupuncture-induced ROCK2 expression is a critical downstream effector of phospho-ERK.
  • ROCK2 activation in the skin plays a crucial role in mediating acupuncture analgesia.
  • This study clarifies a key molecular pathway involved in acupuncture's pain-relieving effects.