Evidence map›Paper›PMID 27472471›Full record

ArticleNMR in biomedicine2016

Towards longitudinal mapping of extracellular pH in gliomas.

Yuegao Huang, Daniel Coman, Peter Herman, Jyotsna U Rao, Samuel Maritim, Fahmeed Hyder

Abstract read
In one paragraph

Article in NMR in biomedicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
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

21 citing papers in PubMed.

  1. Article
  2. Article
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  5. Article
  6. Article
  7. Magma (New York, N.Y.) · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. Imaging Extracellular Acidification and Immune Activation in Cancer.Current opinion in biomedical engineering · 2021
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Molecular Imaging of Extracellular Tumor pH to Reveal Effects of Locoregional Therapy on Liver Cancer Microenvironment.Clinical cancer research : an official journal of the American Association for Cancer Research · 2020
    Article
  17. Article
  18. Phosphocreatine Levels in the Left Thalamus Decline during Wakefulness and Increase after a Nap.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  19. Article
  20. Review
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

6 authors.

Yuegao HuangMagnetic Resonance Research Center, Yale University, New Haven, CT, USA. yuegao.huang@yale.edu.
Daniel ComanMagnetic Resonance Research Center, Yale University, New Haven, CT, USA.
Peter HermanMagnetic Resonance Research Center, Yale University, New Haven, CT, USA.
Jyotsna U RaoMagnetic Resonance Research Center, Yale University, New Haven, CT, USA.
Samuel MaritimDepartment of Biomedical Engineering, Yale University, New Haven, CT, USA.
Fahmeed HyderMagnetic Resonance Research Center, Yale University, New Haven, CT, USA. fahmeed.hyder@yale.edu.

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
NeurophysiologicP30NS052519 · NINDS · YALE UNIVERSITY · PI HYDER, DEWAN SYED FAHMEED · 2007 to 2017
$6.7M
Translation of smart contrast agents for brain tumor characterization by MRR01CA140102 · NCI · YALE UNIVERSITY · PI HYDER, DEWAN SYED FAHMEED · 2010 to 2014
$1.6M
Multivalent PARACEST agents for quantitative molecular imagingR01EB011968 · NIBIB · YALE UNIVERSITY · PI HYDER, DEWAN SYED FAHMEED · 2010 to 2013
$1.3M
NCATS NIH HHS UL1 TR001863NCI NIH HHS R01 CA140102NIBIB NIH HHS R01 EB011968NINDS NIH HHS P30 NS052519
6 · The paper itself

Abstract

Biosensor imaging of redundant deviation in shifts (BIRDS), an ultrafast chemical shift imaging technique, requires infusion of paramagnetic probes such as 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrakis methylene phosphonate (DOTP(8-) ) complexed with thulium (Tm(3+) ) ion (i.e. TmDOTP(5-) ), where the pH-sensitive resonances of hyperfine-shifted non-exchangeable protons contained within the paramagnetic probe are detected. While imaging extracellular pH (pHe ) with BIRDS meets an important cancer research need by mapping the intratumoral-peritumoral pHe gradient, the surgical intervention used to raise the probe's plasma concentration limits longitudinal scans on the same subject. Here we describe using probenecid (i.e. an organic anion transporter inhibitor) to temporarily restrict renal clearance of TmDOTP(5-) , thereby facilitating molecular imaging by BIRDS without surgical intervention. Co-infusion of probenecid with TmDOTP(5-) increased the probe's distribution into various organs, including the brain, compared with infusing TmDOTP(5-) alone. In vivo BIRDS data using the probenecid-TmDOTP(5-) co-infusion method in rats bearing RG2, 9 L, and U87 brain tumors showed intratumoral-peritumoral pHe gradients that were unaffected by the probe dose. This co-infusion method can be used for pHe mapping with BIRDS in preclinical models for tumor characterization and therapeutic monitoring, given the possibility of repeated scans with BIRDS (e.g. over days and even weeks) in the same subject. The longitudinal pHe readout by the probenecid-TmDOTP(5-) co-infusion method for BIRDS adds translational value in tumor assessment and treatment. Copyright © 2016 John Wiley & Sons, Ltd.

Indexed as

Hydrogen-Ion ConcentrationMolecular Probe TechniquesAnimalsBrain NeoplasmsCell Line, TumorGliomaMagnetic Resonance ImagingMaleMolecular ProbesOxazolesPyrimidinonesRatsRats, Inbred F344Rats, Sprague-DawleyReproducibility of ResultsSensitivity and Specificity2,3-dihydro-5H-oxazolo(3,2-a)thieno(3,2-d)pyrimidin-5-oneMolecular ProbesOxazolesPyrimidinonesCESTextravasationmetastasispermeabilityrenal ligationuric acid reducer

Identifiers

PMID27472471
PMCPMC5035200

What OpenQuestion holds

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Read underepoch 390

Registered trials

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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.