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Cytokines and sleep.

Mark R Opp1

  • 1Department of Anesthesiology, University of Michigan, 7422 Medical Sciences Bldg. I, 1150 W. Medical Center Drive, Ann Arbor, MI 48109-0615, USA. mopp@umich.edu

Sleep Medicine Reviews
|August 17, 2005
PubMed
Summary

Sickness alters sleep by involving cytokines, which are immune signaling molecules. The brain detects these signals, influencing sleep-wake behavior to support the immune system during illness.

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Area of Science:

  • Neuroscience
  • Immunology
  • Sleep Science

Background:

  • Sleep is known to be altered during sickness.
  • Cytokines, key signaling molecules of the peripheral immune system, orchestrate infection responses.
  • The brain detects peripheral immune system activation and responds by altering physiology and behavior, including sleep.

Purpose of the Study:

  • To explore the role of cytokines in mediating infection-induced alterations in sleep.
  • To understand how cytokines, present in the healthy brain, regulate sleep-wake behavior.
  • To investigate the potential benefits of infection-induced sleep changes for host recovery.

Main Methods:

  • Review of existing literature on cytokine signaling and sleep regulation.
  • Analysis of mechanisms by which the brain detects peripheral immune activation.
  • Examination of cytokine interactions with neurotransmitter, peptide, and hormone systems.

Main Results:

  • Cytokines are present in the healthy brain and regulate sleep under physiological conditions.
  • Interleukin-1 directly impacts neuronal activity in sleep-wake regulatory circuits.
  • Cytokines modulate sleep by interacting with various neurochemical systems.

Conclusions:

  • Cytokines likely mediate infection-induced changes in sleep due to their regulatory role in normal sleep and altered profiles during infection.
  • Further research is needed to determine if these sleep alterations are beneficial for recovery.

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