Heat treatment in health and disease: How water-filtered infrared-A (wIRA) irradiation affects key cellular mechanisms in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) patients compared to healthy donors. — CFSMEATLAS
Heat treatment in health and disease: How water-filtered infrared-A (wIRA) irradiation affects key cellular mechanisms in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) patients compared to healthy donors.
Hochecker, Barbara, Molinski, Noah, Matt, Katja et al. · Journal of thermal biology · 2024 · DOI
Quick Summary
This study tested whether a gentle heat treatment called water-filtered infrared-A (wIRA) could affect how cells work in ME/CFS patients compared to healthy people. Researchers warmed cells from both groups to 39°C for one hour and looked at three important cellular processes: autophagy (cells cleaning themselves), mitochondrial function (energy production), and gene activity. The heat treatment activated cleaning and stress-response processes in all cells tested, and in ME/CFS cells specifically, it slightly reduced the high mitochondrial activity toward levels seen in healthy cells.
Why It Matters
Understanding cellular mechanisms that differ between ME/CFS patients and healthy individuals is crucial for developing targeted treatments. This study provides molecular evidence that heat treatment can modulate key dysfunctional cellular processes in ME/CFS, particularly the abnormally elevated mitochondrial activity that characterizes many ME/CFS patients. These findings open a pathway toward investigating wIRA as a potential non-pharmacological therapeutic intervention.
Observed Findings
Autophagy markers were induced in fibroblasts and PBMCs from both healthy donors and ME/CFS patients following wIRA treatment.
Mitochondrial function was higher at baseline in ME/CFS patient PBMCs compared to healthy donor PBMCs.
wIRA treatment caused a slight reduction in mitochondrial function in ME/CFS PBMCs, moving closer to healthy donor levels.
Heat-responsive gene expression (MAP1LC3B, SIRT1, HSPA1) was activated in treated cells.
These cellular responses occurred at a physiologically mild temperature (39°C) over 60 minutes.
Inferred Conclusions
wIRA heat treatment activates autophagy and heat-shock responses in human cells from both healthy and ME/CFS populations.
wIRA may help normalize the elevated mitochondrial function observed in ME/CFS patients by reducing it toward healthy baseline levels.
Heat-based interventions warrant further investigation as a potential therapeutic strategy for ME/CFS.
Cellular responses to mild hyperthermia operate through autophagy and mitochondrial regulation pathways.
Remaining Questions
Does wIRA treatment produce sustained improvements in mitochondrial function, or do levels return to baseline after treatment cessation?
What This Study Does Not Prove
This in vitro study does not prove that wIRA heat treatment will be clinically effective in ME/CFS patients or safe for prolonged use. The study measures immediate cellular responses but does not establish whether these changes persist, translate to symptom improvement, or whether whole-body hyperthermia would produce similar effects. The small sample size and single treatment timepoint limit generalizability of findings.
Tags
Symptom:Fatigue
Biomarker:Gene ExpressionBlood Biomarker
Method Flag:Weak Case DefinitionSmall SampleExploratory Only