Cited by 213Sleep and Wakefulness ResearchThermal Regulation in MedicineCircadian rhythm and melatonin

Microbial Products and Cytokines in Sleep and Fever Regulation

Krueger, James M., Majde, Jeannine A.·1994·Critical Reviews™ in Immunology

Abstract

Excessive sleepiness and fever are constitutional symptoms associated with systemic infection. Although fevers have been investigated for many years, sleep responses to infectious challenge have only recently been investigated. Inoculation of animals with bacterial, viral, protozoan and fungal organisms result in complex sleep responses dependent upon the microbial agent and route of administration. The general pattern is characterized by an initial robust increase in non-rapid eye movement sleep (NREMS) followed by a period of NREMS inhibition. REMS is inhibited after infectious challenge. The sleep responses are accompanied by fever but the two responses are, in part, independent from each other. Sleep responses, like fevers, may be beneficial to host defense although this area is relatively uninvestigated. Microbial products likely responsible for sleep and fever responses include bacterial muramyl peptides and endotoxin, and viral double stranded RNA. These microbial products induce sleep and fever responses in animal models. The exact mechanism of how these structurally diverse microbial products elicit sleep and fever remain unknown; however these substances share the ability to induce cytokine production. Cytokines such as interleukin-1 (IL-1), tumor necrosis factor, acidic fibroblast growth factor (FGF), and interferon-alpha (IFN-alpha) are somnogenic whether given directly into brain or intravenously. Other cytokines lack somnogenic activity, e.g., IL-2, IL-6, IFN beta and basic FGF. The somnogenic actions of cytokines probably involve growth hormone-releasing hormone (GHRH) and nitric oxide. Anti-GHRH or inhibition of NO production inhibits normal sleep and inhibits IL-1-induced sleep. In conclusion, cytokines are likely key mediators of fever and sleep responses to infection. The microbial-cytokine altered sleep likely results from an amplification of physiological sleep mechanisms which include cytokines, several neuropeptides and neurotransmitters such as nitric oxide.

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Crossref · 10.1615/critrevimmunol.v14.i3-4.70

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  • SWS-dependent processes might actively counteract inflammation in the brain.

    “SWS-dependent processes might actively counteract inflammation in the brain”

    From The Sleep-Immune Crosstalk in Health and Disease (2019) · cites this paper as [302]

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Authors
Krueger, J. M., & Majde, J. A.
Affiliations
  • University of Tennessee Health Science Center (US)
  • Office of Naval Research (US)
Venue
Critical Reviews™ in Immunology
Publisher
Begell House
Published
1994
Volume
14
Issue
3-4
Pages
355-379
ISSN
  • 0197-3355 (ISSN-L)
  • 2162-6472
OpenAlex
W2024033128
Cited by
213
References
0
Citations by year
2026: 1 · 2025: 3 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 2 · 2019: 6 · 2018: 1 · 2017: 4 · 2016: 4 · 2014: 3 · 2013: 2 · 2012: 3
FWCI
4.29
Type
journal article
Language
en
Open access
closed
Locations
  • Critical Reviews in Immunology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Health Sciences › Medicine › Critical Care and Intensive Care Medicine › Thermal Regulation in Medicine
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Keywords
sleep regulation, fever regulation, cytokines, microbial products, infection, NREM sleep, REM sleep, interleukin-1, TNF-α, interferon-alpha, acidic fibroblast growth factor, growth hormone-releasing hormone, nitric oxide, muramyl peptides, endotoxin, double-stranded RNA, host defense
MeSH terms
Animals, Bacterial Proteins, Endotoxins, Fever, Humans, Models, Biological, RNA, Double-Stranded, Sleep, Viruses, Cytokines

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