Narita, Masaaki, Nishigami, Naoko, Narita, Naoko et al. · Biochemical and biophysical research communications · 2003 · DOI
This study looked at a specific gene that controls serotonin, a chemical messenger in the brain. Researchers compared the genetic versions of this gene in 78 ME/CFS patients and healthy controls. They found that ME/CFS patients were more likely to have a genetic variant that may reduce how much serotonin stays active in the brain, which could make people more vulnerable to developing ME/CFS.
Understanding genetic factors that may contribute to ME/CFS susceptibility could help identify at-risk individuals and lead to better screening or prevention strategies. This study adds biological evidence to support the hypothesis that dysregulation of stress and mood-regulating systems plays a role in ME/CFS pathophysiology.
This study shows an association between a genetic variant and ME/CFS but does not prove the variant causes the disease—many people with this genetic variant may never develop ME/CFS. The study does not demonstrate that this genetic difference actually produces the functional serotonin changes proposed, nor does it establish whether the genetic variant is a primary cause or a secondary effect of the illness.
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 →
Contribute
Private, reviewed by a human. Not a public comment thread.