Mapping of pathological change in chronic fatigue syndrome using the ratio of T1- and T2-weighted MRI scans, by Kiran Thapaliya, Sonya Marshall-Gradisnik, Don Staines, Leighton Barnden in NeuroImage: Clinical Vol 28, 2020, 102366 [doi.org/10.1016/j.nicl.2020.102366]
Research highlights
- We showed increased T1w/T2w in ME/CFS in contrast to other neurodegenerative diseases.
- Higher T1w/T2w occurred in basal ganglia and white matter tracts.
- Increased T1w/T2w indicates increased myelin and/or iron levels.
- T1w/T2w regressions vs clinical measures were abnormal in cingulate cortex and white matter foci.
Research abstract:
Myalgic Encephalomyelitis or Chronic Fatigue Syndrome (ME/CFS) subjects suffer from a variety of cognitive complaints indicating that the central nervous system plays a role in its pathophysiology.
Recently, the ratio T1w/T2w has been used to study changes in tissue myelin and/or iron levels in neurodegenerative diseases such as multiple sclerosis and schizophrenia.
In this study, we applied the T1w/T2w method to detect changes in tissue microstructure in ME/CFS patients relative to healthy controls. We mapped the T1w/T2w signal intensity values in the whole brain for forty-five ME/CFS patients who met Fukuda criteria and twenty-seven healthy controls and applied both region- and voxel-based quantification. We also performed interaction-with-group regressions with clinical measures to test for T1w/T2w relationships that are abnormal in ME/CFS at the population level.
Region-based analysis showed significantly elevated T1w/T2w values (increased myelin and/or iron) in ME/CFS in both white matter (WM) and subcortical grey matter. The voxel-based group comparison with sub-millimetre resolution voxels detected very significant clusters with increased T1w/T2w in ME/CFS, mostly in subcortical grey matter, but also in brainstem and projection WM tracts. No areas with decreased T1w/T2w were found in either analysis. ME/CFS T1w/T2w regressions with heart-rate variability, cognitive performance, respiration rate and physical well-being were abnormal in both gray and white matter foci.
Our study demonstrates that the T1w/T2w approach is very sensitive and shows increases in myelin and/or iron in WM and basal ganglia in ME/CFS.

Here we critically review existing evidence that genetic factors alter ME/CFS risk before concluding that most ME/CFS candidate gene associations are not replicated by the larger CFS cohort within UK Biobank. Multiple genome-wide association studies of this cohort also have not yielded consistently significant associations.
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In May 2020, a BBC appeal resulted in over 100 musicians and producers coming forward to offer their help in completing the album. An amazing team have dedicated the last few months to working on my music. Thanks to them, my dream of releasing an album has now come true.



Principal axis factor analysis
There is evidence for an autoimmune mechanism for ME/CFS with an infection-triggered onset and dysfunction of
We applied inclusion of family members without ME/CFS, from families with multiple CFS patients, as a second non-ME/CFS control group in order to re-examine
ME greatly impacts quality of life (QoL) with studies showing that people with ME often have worse quality of life than people with sickle cell anemia and cystic fibrosis, among other chronic diseases.

