Sleep Modulation of Inflammatory Responses
Summary
Sleep is a critical regulator of immune homeostasis, exerting profound effects on the timing, amplitude and resolution of inflammatory processes. Adequate sleep duration and continuity support a balanced release of cytokines and acute-phase reactants, promoting tissue repair and pathogen defence. By contrast, fragmented or curtailed sleep fosters a proinflammatory milieu, characterised by elevated circulating mediators such as interleukin-6, tumour necrosis factor-α and C-reactive protein. These shifts link disrupted sleep architecture to endothelial dysfunction, blood–brain barrier permeability and dysregulated metabolic signalling. Intrinsic circadian pacemakers intersect with sleep-dependent immune modulation, synchronising leukocyte trafficking and inflammatory gene expression. The bidirectional nature of this relationship means that inflammatory challenges feed back on sleep-wake centres, altering sleep depth and continuity. This interplay underlies the contribution of sleep disturbance to cardiometabolic, neurodegenerative and mood disorders at a global scale, and highlights practical applications ranging from chronotherapeutic strategies to gut-microbiome interventions that restore both sleep quality and immune equilibrium.
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Sleep Modulation of Inflammatory Responses publication trend
The graph below shows the total number of articles in sleep modulation of inflammatory responses across all publications each year (not limited to Nature Index journals).
Technical terms
Cytokines: Small proteins released by immune cells that mediate and regulate inflammation and intercellular communication.
C-reactive protein (CRP): An acute-phase protein synthesised by the liver that serves as a sensitive biomarker of systemic inflammation.
Reactive oxygen species (ROS): Chemically reactive molecules containing oxygen that, in excess, contribute to oxidative stress and inflammatory signalling.
Blood–brain barrier (BBB): A selective endothelial interface that controls the passage of substances between the bloodstream and the central nervous system; its disruption can result from inflammatory mediators.
Proteomic fingerprint: A characteristic pattern of protein abundances in biological fluids that reflects underlying physiological or pathological processes.
Sleep inconsistency: Night-to-night variability in sleep timing, duration or continuity, which can independently predict inflammatory activation.
References
- Oral nano-antioxidants improve sleep by restoring intestinal barrier integrity and preventing systemic inflammation. National Science Review (2023).
- Very short sleep duration reveals a proteomic fingerprint that is selectively associated with incident diabetes mellitus but not with incident coronary heart disease: a cohort study. BMC Medicine (2024).
- Sleep Inconsistency and Markers of Inflammation. Frontiers in Neurology (2020).
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