Tomas, Cara, Brown, Audrey, Strassheim, Victoria et al. · PloS one · 2017 · DOI
This study examined how cells in ME/CFS patients produce energy differently than in healthy people. Researchers tested immune cells from patients and found that when these cells are under stress, they cannot ramp up their energy production as much as healthy cells can. This suggests that ME/CFS patients' cells may struggle to meet energy demands, especially during periods of physical or mental exertion.
This study provides mechanistic evidence that ME/CFS involves quantifiable cellular energy production defects, moving beyond subjective symptom reporting to objective biological markers. Understanding mitochondrial dysfunction in ME/CFS may inform future therapeutic targets and biomarker development for diagnosis and monitoring of disease progression.
This study does not prove that mitochondrial dysfunction is the sole cause of ME/CFS—only that it is associated with the disease in blood cells. It does not establish whether these bioenergetic abnormalities are primary (causing the disease) or secondary (resulting from it). The findings in PBMCs may not fully represent mitochondrial function in other tissues affected by ME/CFS.
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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