Links between the innate immune system and sleep.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanistic literature and conceptual frameworks without original empirical data or systematic synthesis.
PubMed 16337444 · doi:10.1016/j.jaci.2005.08.005
What was done
This narrative review summarizes research on the relationships between the innate immune system and sleep. It covers methods for laboratory sleep characterization, cytokine and microbial product involvement in sleep regulation, circadian and stress interactions, and implications for host defense and asthma exacerbations.
What was found
The abstract reports that acute infection with non-neurotropic agents induces stereotypic sleep changes, specifically increased slow-wave sleep in non-rapid-eye-movement (NREM) sleep and often decreased rapid-eye-movement (REM) sleep. Both spontaneous and infection-induced sleep are reported to be regulated partly by cytokines. The abstract contains no quantitative metrics or statistical values.
Why it matters
It outlines the biological links between immune activation and altered sleep architecture, framing sleep as a regulated component of the host response to infection.
Limits
The paper is a non-systematic narrative review providing no original human data or quantitative effect sizes in the abstract. Methodological details, search criteria, and sample characteristics are not specified.
Cited by
- supports Infecting an animal produces an immune antibody response and a cytokine cascade involving TNF-alpha, IL-1, and IL-6 that directly signals the hypothalamus to trigger sleep.