De Luca, Chiara, Gugliandolo, Agnese, Calabrò, Carlo et al. · Mediators of inflammation · 2015 · DOI
This study looked at genetic variations in genes that control nitric oxide (a chemical messenger in the body) in people with ME/CFS, fibromyalgia, and chemical sensitivities. Researchers found that certain genetic patterns were more common in these patient groups and were associated with higher levels of oxidative stress markers, suggesting these genetic differences might play a role in these overlapping conditions.
ME/CFS shares pathological features with fibromyalgia and chemical sensitivities (oxidative stress, inflammation), and this study identifies specific genetic markers that may help explain the biological basis of these interconnected conditions. Understanding genetic susceptibility to nitric oxide dysregulation could guide future therapeutic interventions targeting this pathway in ME/CFS.
This study does not prove that these genetic polymorphisms cause ME/CFS or related conditions—only that they are associated with them. The polymorphisms may be markers of underlying vulnerability rather than direct causative factors, and association in one population may not replicate universally. The study does not establish whether nitrite/nitrate elevation is beneficial or harmful in these conditions.
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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