Evidence map›Paper›PMID 25218555›Full record

ArticleBrain research2014

Methylene blue treatment delays progression of perfusion-diffusion mismatch to infarct in permanent ischemic stroke.

Pavel Rodriguez, Zhao Jiang, Shiliang Huang, Qiang Shen, Timothy Q Duong

Registry-linked trialAbstract read
In one paragraph

Article in Brain research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02380573 (Cognitive and Functional Connectivity Effects of Methylene Blue in Healthy Aging, Mild Cognitive Impairment and Alzheimer's Disease), which is not on this map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.6field-weighted citation impact, top 11% 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.

NCT02380573 phase2completednot on this mapstarted 2015, after this paper: background citation

Cognitive and Functional Connectivity Effects of Methylene Blue in Healthy Aging, Mild Cognitive Impairment and Alzheimer's Disease

TypeinterventionalSponsorThe University of Texas Health Science Center at San AntonioRan2015 to 2023Enrolled117ConditionsMild Cognitive Impairment, MCI, Aging, Alzheimer's DiseaseArmsMethylene Blue, FD&C Blue # 2, Phenazopyridine hydrochloride
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 17 citations in OpenAlex.

  1. Trial
  2. Effect of Methylene Blue on White Matter Injury after Ischemic Stroke.Oxidative medicine and cellular longevity · 2021
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. 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

5 authors at 1 institution in 2 countries.

Pavel RodriguezResearch Imaging Institute, Radiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.
Zhao JiangResearch Imaging Institute, Radiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States; Department of Anatomy and Embryology, Peking University Health Science Center, Beijing, China.
Shiliang HuangResearch Imaging Institute, Radiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.
Qiang ShenResearch Imaging Institute, Radiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States.
Timothy Q DuongResearch Imaging Institute, Radiology, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States. Electronic address: DuongT@uthscsa.edu.
The University of Texas Health Science Center at San Antonio · US

Funding

Institute for Integration of Medicine & Science: A Partnership to Improve HealthUL1TR001120 · NCATS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI CLARK, ROBERT A, HARGREAVES, KENNETH M · 2013 to 2017
$16.5M
Stroke Imaging of Conscious RatsR01NS045879 · NINDS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI DUONG, TIMOTHY Q. · 2004 to 2014
$3.1M
NCATS NIH HHS UL1 TR001120NINDS NIH HHS R01 NS045879
6 · The paper itself

Abstract

Stroke is a leading cause of morbidity and mortality in the world. Low-dose methylene blue (MB), which has been used safely to treat methemoglobinemia and cyanide poisoning in humans, has energy enhancing and antioxidant properties. We tested the hypothesis that methylene blue treatment delays progression of at-risk tissue (ca. perfusion-diffusion mismatch) to infarct in permanent middle cerebral artery occlusion in rats at two MB treatment doses. Serial MRI was used to evaluate MB treatment efficacy. The major findings were: (i) MB significantly prolonged the perfusion-diffusion mismatch, (ii) MB mildly increased the CBF in the hypoperfused tissue, (iii) MB did not change the final infarct volume in permanent ischemic stroke, and (iv) there were no dose-dependent effects on mismatch progression for the 1 and 3mg/kg doses studied. This neuroprotective effect is likely the result of sustained ATP production and increased CBF to tissue at risk. This work has the potential to readily lead to clinical stroke trials given MB's excellent safety profile.

Indexed as

AnimalsBrainBrain IschemiaCerebrovascular CirculationDisease Models, AnimalDisease ProgressionDose-Response Relationship, DrugInfarction, Middle Cerebral ArteryMagnetic Resonance ImagingMaleMethylene BlueNeuroprotective AgentsRandom AllocationRats, Sprague-DawleyTreatment OutcomeMethylene BlueNeuroprotective AgentsInfarct volumeIschemic penumbraMiddle-cerebral artery occlusionMRINeuroprotectionOxidative stress

Identifiers

PMID25218555
PMCPMC4907336
OpenAlexW2139122899

What OpenQuestion holds

Textmetadata
LicenceTDM
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.