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Biomarkers and Breakdowns: Neuroinflammatory Drivers Linking Sleep Disorders and Chronic Pain.
Bento Alves1, Isaura Tavares1,2, Daniel Humberto Pozza1,2
1Unit of Experimental Biology, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal.
Biomedicines
|January 28, 2026
Summary
Chronic pain and sleep disturbances are linked by inflammation, neurodegeneration, and metabolic issues. Understanding these molecular pathways is key to developing better treatments for pain and sleep problems.
Area of Science:
- Neuroscience
- Immunology
- Endocrinology
Background:
- Chronic pain and sleep disturbances significantly impair quality of life.
- A bidirectional relationship exists between pain and sleep, involving complex challenges.
Purpose of the Study:
- To review molecular mechanisms underlying the pain-sleep relationship.
- To explore pharmacological influences on this bidirectional interaction.
Main Methods:
- Narrative review of current scientific evidence.
- Synthesis of data on molecular mediators and drug effects.
Main Results:
- Elevated cytokines (IL-1β, IL-6, IL-10, TNF-α), neurodegenerative markers (tau, β-amyloid 42), and metabolic factors are linked to sleep impairment in chronic pain.
- Melatonin and opioids have varied effects on neurophysiology.
Conclusions:
- Dysregulation in inflammatory, neurodegenerative, and metabolic pathways drives the chronic pain-sleep cycle.
- Targeted research and integrated clinical strategies are needed.
Keywords:
bidirectional communicationchronic paincytokinesinflammation mediatorsmelatoninmetabolic diseasesneurodegenerative diseasesopioid analgesicspharmacological phenomenasleep–wake disordersMore Related Videos
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