Insights into the Complex Biological Network Underlying Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.
Dudova, Dobrina, Bozhkova, Martina, Petrov, Steliyan et al. · International journal of molecular sciences · 2025 · DOI
Quick Summary
This review brings together research showing that ME/CFS involves multiple body systems going wrong at the same time—including problems with the immune system, energy production in cells, hormone balance, and gut health. These problems appear to feed into each other, creating a cycle that keeps the illness going. The findings suggest ME/CFS is not just one thing breaking down, but rather many interconnected systems all struggling together.
Why It Matters
This comprehensive synthesis helps clinicians and patients understand ME/CFS as a genuine biological disorder affecting multiple systems simultaneously, rather than a psychological condition. Identifying this interconnected network of dysfunction opens pathways for potential multi-targeted therapeutic approaches and validates the complexity patients experience.
Observed Findings
- Reduced natural killer cell cytotoxicity and T-cell exhaustion in immune studies
- Presence of diverse autoantibodies and abnormal B-cell subsets
- Gut dysbiosis and increased intestinal permeability in patient cohorts
- Impaired ATP generation and mitochondrial dysfunction in metabolomic studies
- Endothelial dysfunction associated with oxidative and nitrosative stress
Inferred Conclusions
- ME/CFS results from a self-sustaining cycle integrating chronic inflammation, metabolic insufficiency, and neuroimmune imbalance
- Multiple biological systems dysfunction simultaneously rather than single-system pathology
- Gut dysbiosis and intestinal permeability may amplify neuroinflammation via the gut-brain axis
- Mitochondrial energy impairment and oxidative stress drive cardinal symptoms including post-exertional malaise
Remaining Questions
- Which abnormalities are primary drivers versus compensatory responses, and in what sequence do they initiate?
- Can interventions targeting individual pathways (e.g., mitochondrial support, microbiota restoration) break the proposed self-sustaining cycle?
- How do genetic, infectious, and environmental triggers converge to establish this multi-system dysregulation?
- Are biomarker combinations predictive of disease severity and treatment response?
What This Study Does Not Prove
This review does not establish which abnormalities are primary causes versus secondary consequences, nor does it prove that correcting one dysfunction will resolve others. The findings are correlational—showing that these biological changes occur in ME/CFS patients, not necessarily that they cause the illness. Individual studies cited may have small sample sizes or methodological limitations that affect the certainty of conclusions.
Topics
Tags
Metadata
- DOI
- 10.3390/ijms27010268
- PMID
- 41516145
- Review status
- Machine draft
- Evidence level
- Established evidence from major reviews, guidelines, or evidence maps
- Last updated
- 7 April 2026