Evidence map›Paper›PMID 26173637›Full record

ArticleMagnetic resonance in medicine2016

pH imaging of mouse kidneys in vivo using a frequency-dependent paraCEST agent.

Yunkou Wu, Shanrong Zhang, Todd C Soesbe, Jing Yu, Elena Vinogradov, Robert E Lenkinski, A Dean Sherry

Abstract read
In one paragraph

Article in Magnetic resonance in medicine, 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. Review
  2. Article
  3. Article
  4. Quasi-steady-state chemical exchange saturation transfer (QUASS CEST) MRI analysis enables TJournal of magnetic resonance (San Diego, Calif. : 1997) · 2021
    Article
  5. Article
  6. Review
  7. A fast multislice sequence for 3D MRI-CEST pH imaging.Magnetic resonance in medicine · 2021
    Article
  8. Article
  9. Article
  10. A Frequency-Selective pH-Responsive paraCEST Agent.Angewandte Chemie (International ed. in English) · 2020
    Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Review
  16. Article
  17. Lanthanide-Based TAngewandte Chemie (International ed. in English) · 2017
    Article
  18. Article
  19. Review
  20. 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

7 authors.

Yunkou WuAdvanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Texas, USA.
Shanrong ZhangAdvanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Texas, USA.
Todd C SoesbeAdvanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Texas, USA.
Jing YuDepartment of Chemistry, The University of Texas at Dallas, Richardson, Texas, USA.
Elena VinogradovAdvanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Texas, USA.
Robert E LenkinskiAdvanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Texas, USA.
A Dean SherryAdvanced Imaging Research Center, The University of Texas Southwestern Medical Center at Dallas, Texas, USA.

Funding

YTTRIUM HYPERPOLARIZATIONP41RR002584 · NCRR · UT SOUTHWESTERN MEDICAL CENTER · PI MASON, RALPH P. · 1985 to 2011
$14.3M
TR&D 3: Imaging Carbohydrate MetabolismP41EB015908 · NIBIB · UT SOUTHWESTERN MEDICAL CENTER · PI MALLOY, CRAIG R · 2012 to 2021
$10.9M
PARACEST Agents: Optimization for Human MR ImagingR01EB004582 · NIBIB · UT SOUTHWESTERN MEDICAL CENTER · PI LENKINSKI, ROBERT E · 2006 to 2014
$7.5M
PARACEST AGENTS FOR MOLECULAR IMAGING OF CANCER BY MRIR01CA115531 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI SHERRY, DEAN · 2005 to 2021
$4.2M
NCI NIH HHS R01 CA115531NCRR NIH HHS P41 RR002584NIBIB NIH HHS P41 EB015908NIBIB NIH HHS R01 EB004582
6 · The paper itself

Abstract

purposeThis study explored the feasibility of using a pH responsive paramagnetic chemical exchange saturation transfer (paraCEST) agent to image the pH gradient in kidneys of healthy mice.

methodsCEST signals were acquired on an Agilent 9.4 Tesla small animal MRI system using a steady-state gradient echo pulse sequence after a bolus injection of agent. The magnetic field inhomogeneity across each kidney was corrected using the WASSR method and pH maps were calculated by measuring the frequency of water exchange signal arising from the agent.

resultsDynamic CEST studies demonstrated that the agent was readily detectable in kidneys only between 4 to 12 min postinjection. The CEST images showed a higher signal intensity in the pelvis and calyx regions and lower signal intensity in the medulla and cortex regions. The pH maps reflected tissue pH values spanning from 6.0 to 7.5 in kidneys of healthy mice.

conclusionThis study demonstrated that pH maps of the kidney can be imaged in vivo by measuring the pH-dependent chemical shift of a single water exchange CEST peak without prior knowledge of the agent concentration in vivo. The results demonstrate the potential of using a simple frequency-dependent paraCEST agent for mapping tissue pH in vivo. Magn Reson Med 75:2432-2441, 2016. © 2015 Wiley Periodicals, Inc.

Indexed as

AlgorithmsAnimalsContrast MediaHydrogen-Ion ConcentrationImage Processing, Computer-AssistedKidneyMagnetic Resonance ImagingMiceMice, SCIDContrast Mediafrequency-based imagingkidneyparaCESTpH maps

Identifiers

PMID26173637
PMCPMC4713392

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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.