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Updated: Jan 11, 2026
Establishing a Device for Sleep Deprivation in Mice
Published on: September 22, 2023
Acute sleep deprivation induces hyperalgesia through P2X4-mediated microglial activation in mice
Song Huang1, Weiwen Cheng2, Pengwei Lai2
1Department of Anesthesiology, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330006, Jiangxi, China.
Abstract:
Perioperative insomnia is a common clinical phenomenon that is associated with increased pain sensitivity during the perioperative period. Understanding the mechanisms underlying acute sleep deprivation-induced hyperalgesia is crucial for improving pain management in these patients. The P2X4 receptor is a key modulator of pain, yet its role in hyperalgesia following acute sleep deprivation remains unclear. In this study, we established an acute sleep deprivation model in mice and found that sleep-deprived animals exhibited significant hyperalgesia along with marked microglial activation and elevated levels of proinflammatory cytokines in the hippocampal CA1 region. Notably, intracerebroventricular administration of the selective P2X4 receptor antagonist 5-BDBD during sleep deprivation significantly ameliorated hyperalgesia, inhibited microglial activation, and reduced cytokine levels. These results suggest that acute sleep deprivation activates P2X4 receptors, which in turn trigger microglial activation and inflammatory cytokine release, ultimately leading to hyperalgesia.
Insights
Acute sleep deprivation causes increased pain sensitivity (hyperalgesia) by activating P2X4 receptors, leading to inflammation in the brain. Blocking these receptors reduces pain and inflammation, offering potential pain management strategies.
Area of Science:
- Neuroscience
- Pain Research
- Sleep Science
Background:
- Perioperative insomnia is common and linked to heightened pain sensitivity.
- Understanding sleep deprivation's effect on pain is vital for patient care.
- The role of P2X4 receptors in sleep deprivation-induced pain is not well understood.
Purpose of the Study:
- To investigate the role of P2X4 receptors in acute sleep deprivation-induced hyperalgesia.
- To explore the mechanisms involving microglial activation and cytokine release.
Main Methods:
- An acute sleep deprivation model was established in mice.
- Hyperalgesia, microglial activation, and cytokine levels were assessed.
- The P2X4 receptor antagonist 5-BDBD was administered intracerebroventricularly.
Main Results:
- Sleep-deprived mice showed significant hyperalgesia, microglial activation, and increased proinflammatory cytokines in the hippocampus.
- Administration of 5-BDBD during sleep deprivation reduced hyperalgesia.
- 5-BDBD treatment also inhibited microglial activation and lowered cytokine levels.
Conclusions:
- Acute sleep deprivation activates P2X4 receptors, triggering microglial activation and inflammation.
- This P2X4 receptor-mediated pathway contributes to hyperalgesia following sleep deprivation.
- Targeting P2X4 receptors may be a viable strategy for managing perioperative pain.
