Evidence map›Paper›PMID 26563581›Full record

ArticleScientific reports2015

Reduced cortical microvascular oxygenation in multiple sclerosis: a blinded, case-controlled study using a novel quantitative near-infrared spectroscopy method.

Runze Yang, Jeff F Dunn

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04733456 (Evaluation of Brain Activity and Oxygenation Using Near-infrared Spectroscopy), which is not on this map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
2.2field-weighted citation impact, top 13% 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.

NCT04733456 unknown statusnot on this mapstarted 2021, after this paper: background citation

Evaluation of Brain Activity and Oxygenation Using Near-infrared Spectroscopy (NIRS) in Inflammatory Bowel Disease (IBD) Patients

TypeobservationalSponsorUniversity of CalgaryRan2021 to 2026Enrolled40ConditionsIBD, Maladaptive Behavior Associated With Physical IllnessArmsQuality of life questionnaires, NIRS, Stool Collection, Blood and urine collection
3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 57 citations in OpenAlex.

  1. Brain oxygen extraction fraction mapping in patients with multiple sclerosis.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Trial
  2. Review
  3. Article
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  5. Article
  6. Hypoxia in multiple sclerosis.Redox biology · 2025
    Review
  7. Review
  8. Review
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  11. Article
  12. Review
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  15. Review
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  20. Reduced brain oxygen metabolism in patients with multiple sclerosis: Evidence from dual-calibrated functional MRI.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2023
    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

2 authors at 1 institution in 2 countries.

Runze YangDepartment of Radiology, Cumming School of Medicine, University of Calgary.
Jeff F DunnDepartment of Radiology, Cumming School of Medicine, University of Calgary.
Allen Institute for Brain Science · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypoxia (low oxygen) is associated with many brain disorders as well as inflammation, but the lack of widely available technology has limited our ability to study hypoxia in human brain. Multiple sclerosis (MS) is a poorly understood neurological disease with a significant inflammatory component which may cause hypoxia. We hypothesized that if hypoxia were to occur, there should be reduced microvascular hemoglobin saturation (StO2). In this study, we aimed to determine if reduced StO2 can be detected in MS using frequency domain near-infrared spectroscopy (fdNIRS). We measured fdNIRS data in cortex and assessed disability of 3 clinical isolated syndrome (CIS), 72 MS patients and 12 controls. Control StO2 was 63.5 ± 3% (mean ± SD). In MS patients, 42% of StO2 values were more than 2 × SD lower than the control mean. There was a significant relationship between StO2 and clinical disability. A reduced microvascular StO2 is supportive (although not conclusive) that there may be hypoxic regions in MS brain. This is the first study showing how quantitative NIRS can be used to detect reduced StO2 in patients with MS, opening the door to understanding how microvascular oxygenation impacts neurological conditions.

Indexed as

AdultAnalysis of VarianceCase-Control StudiesCerebral CortexDisability EvaluationFemaleHemoglobinsHumansMagnetic Resonance ImagingMaleMicrovesselsMiddle AgedMultiple SclerosisOxygenOxygen ConsumptionSpectroscopy, Near-InfraredHemoglobinsOxygen

Identifiers

PMID26563581
PMCPMC4643232
OpenAlexW2175347143

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.