Evidence map›Paper›PMID 35053821›Full record

ArticleBrain sciences2022

Differential Effects of Exercise on fMRI of the Midbrain Ascending Arousal Network Nuclei in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and Gulf War Illness (GWI) in a Model of Postexertional Malaise (PEM).

James N Baraniuk, Alison Amar, Haris Pepermitwala, Stuart D Washington

Open access · goldAbstract read
In one paragraph

Article in Brain sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
3.0field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 20 citations in OpenAlex.

  1. Review
  2. Difference of Resting State Functional Connectivity between Depressive Patients with and without Clinically Significant Insomnia.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2025
    Article
  3. Review
  4. Article
  5. Review
  6. Pathology of pain and its implications for therapeutic interventions.Signal transduction and targeted therapy · 2024
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

James N BaraniukDepartment of Medicine, Georgetown University, Washington, DC 20007, USA.ORCID 0000-0002-1866-4177
Alison AmarDepartment of Medicine, Georgetown University, Washington, DC 20007, USA.
Haris PepermitwalaDepartment of Medicine, Georgetown University, Washington, DC 20007, USA.
Stuart D WashingtonDepartment of Medicine, Georgetown University, Washington, DC 20007, USA.
Georgetown University · US

Funding

Georgetown-Howard Universities Center for Clinical and Translational Science (GHUUL1TR000101 · NCATS · GEORGETOWN UNIVERSITY · PI MELLMAN, THOMAS A, VERBALIS, JOSEPH G · 2012 to 2015
$19.3M
Georgetown-Howard Universities Center for Clinical and Translational Science (GHUUL1RR031975 · NCRR · GEORGETOWN UNIVERSITY · PI VERBALIS, JOSEPH G · 2010 to 2011
$14.6M
Exertional Exhaustion in CFSR01NS085131 · NINDS · GEORGETOWN UNIVERSITY · PI BARANIUK, JAMES N · 2013 to 2017
$1.7M
miRNA in cerebrospinal fluid in CFSR21NS088138 · NINDS · GEORGETOWN UNIVERSITY · PI BARANIUK, JAMES N · 2014 to 2015
$428k
NCATS NIH HHS UL1 TR000101NCATS NIH HHS UL1TR000101NCRR NIH HHS UL1 RR031975NINDS NIH HHS R01 NS085131NINDS NIH HHS R21 NS088138NINDS NIH HHS R21NS088138NINDS NIH HHS RO1NS085131
6 · The paper itself

Abstract

backgroundMyalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS), Gulf War Illness (GWI) and control subjects underwent fMRI during difficult cognitive tests performed before and after submaximal exercise provocation (Washington 2020). Exercise caused increased activation in ME/CFS but decreased activation for GWI in the dorsal midbrain, left Rolandic operculum and right middle insula. Midbrain and isthmus nuclei participate in threat assessment, attention, cognition, mood, pain, sleep, and autonomic dysfunction.

methodsActivated midbrain nuclei were inferred by a re-analysis of data from 31 control, 36 ME/CFS and 78 GWI subjects using a seed region approach and the Harvard Ascending Arousal Network.

resultsBefore exercise, control and GWI subjects showed greater activation during cognition than ME/CFS in the left pedunculotegmental nucleus. Post exercise, ME/CFS subjects showed greater activation than GWI ones for midline periaqueductal gray, dorsal and median raphe, and right midbrain reticular formation, parabrachial complex and locus coeruleus. The change between days (delta) was positive for ME/CFS but negative for GWI, indicating reciprocal patterns of activation. The controls had no changes.

conclusionsExercise caused the opposite effects with increased activation in ME/CFS but decreased activation in GWI, indicating different pathophysiological responses to exertion and mechanisms of disease. Midbrain and isthmus nuclei contribute to postexertional malaise in ME/CFS and GWI.

Indexed as

arousalautonomicexercisefMRIGulf War IllnessGWIME/CFSmidbrainMyalgic Encephalomyelitis/Chronic Fatigue SyndromePEMpostexertional malaisepostural tachycardia

Identifiers

PMID35053821
PMCPMC8774249
OpenAlexW4225777139

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.