Kimura, Yukio, Sato, Wakiro, Maikusa, Norihide et al. · Journal of neuroimaging : official journal of the American Society of Neuroimaging · 2023 · DOI
Researchers used a specialized brain imaging technique to look for signs of inflammation in the brains of ME/CFS patients and compared these findings to levels of harmful antibodies (immune proteins) in their blood. They found that certain antibodies were linked to visible changes in a specific brain region called the right frontal operculum, and that longer disease duration was associated with more brain changes. These findings suggest that ME/CFS may involve both immune system dysfunction and measurable changes in brain structure.
This study provides objective neuroimaging evidence linking immune dysfunction to measurable brain changes in ME/CFS, potentially supporting the autoimmune hypothesis of the disease. If confirmed, these findings could lead to biomarkers useful for diagnosis and monitoring disease progression, and may identify therapeutic targets related to autoimmune mechanisms.
This study cannot prove that autoantibodies cause the brain changes observed, only that they are associated. The cross-sectional design means we cannot determine if autoantibody levels change before, during, or after brain abnormalities develop. Additionally, these findings in one brain region do not establish a complete picture of ME/CFS pathophysiology or rule out other contributing mechanisms.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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