Baraniuk, James N, Shivapurkar, Narayan · Scientific reports · 2017 · DOI
Researchers studied brain fluid from people with Gulf War Illness and chronic fatigue syndrome (CFS) before and after exercise to understand why exercise makes symptoms worse. They found that exercise changes certain molecules called microRNAs in the brain fluid, and these changes were different in people with CFS compared to Gulf War Illness patients. This suggests that the biological reasons these conditions cause post-exertional exhaustion may be different, even though the symptoms look similar.
This study provides molecular evidence that post-exertional malaise—a hallmark feature of ME/CFS—may arise from distinct central nervous system mechanisms even when clinical presentations overlap. Understanding these biological differences could lead to more personalized diagnostic approaches and targeted treatments for ME/CFS and related conditions.
This study does not prove that microRNA changes cause post-exertional malaise or that they can be used clinically to diagnose or monitor ME/CFS. The small sample sizes and single-session design limit generalizability. CSF microRNA changes are correlated with exercise response but causation remains unestablished, and the functional significance of these molecular changes for symptom severity is unclear.
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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Primary citation
Baraniuk, James N & Shivapurkar, Narayan (2017). Exercise - induced changes in cerebrospinal fluid miRNAs in Gulf War Illness, Chronic Fatigue Syndrome and sedentary control subjects.. Scientific reports. https://doi.org/10.1038/s41598-017-15383-9
BibTeX
@article{mecfsatlas-baraniuk-2017-exercise-induced,
author = {Baraniuk, James N and Shivapurkar, Narayan},
title = {Exercise - induced changes in cerebrospinal fluid miRNAs in Gulf War Illness, Chronic Fatigue Syndrome and sedentary control subjects.},
journal = {Scientific reports},
year = {2017},
doi = {10.1038/s41598-017-15383-9},
note = {PubMed: 29127316},
url = {https://www.mecfsatlas.com/evidence/baraniuk-2017-exercise-induced},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/baraniuk-2017-exercise-induced
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