Al-Rawaf, Hadeel A, Alghadir, Ahmad H, Gabr, Sami A · Pain practice : the official journal of World Institute of Pain · 2019 · DOI
This study looked at tiny molecules called microRNAs in the blood of adolescents with ME/CFS to see if they could help explain why these patients experience pain. Researchers found that five specific microRNAs were lower in ME/CFS patients compared to healthy teens, and these changes were linked to higher levels of inflammatory chemicals that are known to cause pain. Interestingly, girls with ME/CFS had even lower microRNA levels and higher inflammation markers than boys with the condition.
This research provides potential biological markers that could help objectively measure pain intensity in ME/CFS, a symptom that is often invisible and subjective. Understanding the role of microRNAs and their relationship to inflammation may eventually lead to new treatments targeting these pathways to reduce pain in ME/CFS patients. The finding of sex differences in both microRNA expression and inflammation suggests that ME/CFS may manifest differently in girls versus boys, which could improve personalized treatment approaches.
This study does not prove that microRNA changes *cause* pain in ME/CFS—only that they are associated with it; causation would require mechanistic studies and intervention trials. The findings are limited to adolescents and may not apply to adults with ME/CFS. The study does not establish whether microRNA changes are primary drivers of ME/CFS pathology or secondary consequences of the disease.
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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