Evidence map›Paper›PMID 21448944›Full record

ArticleJournal of magnetic resonance imaging : JMRI2011

Choline metabolism, proliferation, and angiogenesis in nonenhancing grades 2 and 3 astrocytoma.

Tracy R McKnight, Kenneth J Smith, Philip W Chu, King S Chiu, Colleen P Cloyd, Susan M Chang, Joanna J Phillips, Mitchel S Berger

Open access · bronzeAbstract read
In one paragraph

Article in Journal of magnetic resonance imaging : JMRI, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-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.

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

18 citing papers in PubMed, 31 citations in OpenAlex.

  1. Review
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  6. MultivoxelTomography (Ann Arbor, Mich.) · 2018
    Article
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  9. Core Canonical Pathways Involved in Developing Human Glioblastoma Multiforme (GBM).International journal of scientific research in science, engineering and technology · 2017
    Article
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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

8 authors at 2 institutions in 1 country.

Tracy R McKnightDepartment of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA. tracy.mcknight@ucsf.edu
Kenneth J Smith
Philip W Chu
King S Chiu
Colleen P Cloyd
Susan M Chang
Joanna J Phillips
Mitchel S Berger
Neurological Surgery · USUniversity of California, San Francisco · US

Funding

Impact of molecular phenotype on glioma metabolism and growthR01CA159869 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI NELSON, SARAH J. · 2011 to 2015
$1.7M
Identification of MRS Markers of Glioma ProgressionR01CA116041 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MCKNIGHT, TRACY RICHMOND · 2006 to 2010
$1.2M
The role of microglia and macrophages in the development of brain tumorsK08NS063456 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI PHILLIPS, JOANNA · 2008 to 2012
$854k
NCI NIH HHS R01 CA116041NCI NIH HHS R01-CA116041NCI NIH HHS R01 CA159869NINDS NIH HHS K08 NS063456
6 · The paper itself

Abstract

purposeTo study choline metabolism in biopsies from nonenhancing Grade 2 (AS2) and Grade 3 (AS3) astrocytomas to determine whether (1) phosphocholine (PC) dominates in AS3, and (2) PC is associated with proliferation or angiogenesis. PC and glycerophosphocholine (GPC) are involved in phospholipid metabolism that accompanies mitosis. PC is the predominant peak in Grade 4 astrocytoma (GBM) while GPC dominates in AS2. MATERIALS AND

methodsWe used high resolution magic angle spinning magnetic resonance spectroscopy to compare the concentrations of 10 metabolites in 41 biopsies (16 AS2 and 25 AS3) from 24 tumors. Immunohistochemistry was performed on paired biopsies to determine the cell density, Ki-67 proliferation index, and vascular endothelial growth factor (VEGF) angiogenic marker expression.

resultsAS3 had higher PC than AS2; however, the PC:GPC was less than 1 in all cases irrespective of tumor grade. Within tumors, GPC increased with Ki-67 and PC and tCho increased with cell density. There was no association between any choline compound and VEGF.

conclusionThese data suggest that PC:GPC less than 1 is not unique to low grade glioma. Furthermore, the PC concentration that is a marker of aggressive glial tumors is not tightly linked to cell proliferation or angiogenesis in nonenhancing astrocytomas.

Indexed as

AdultAstrocytomaBiopsyBrain NeoplasmsCell ProliferationCholineFemaleGliomaGlycerylphosphorylcholineHumansImmunohistochemistryKi-67 AntigenMagnetic Resonance SpectroscopyMaleNeovascularization, PathologicVascular Endothelial Growth Factor ACholineGlycerylphosphorylcholineKi-67 AntigenVascular Endothelial Growth Factor A

Identifiers

PMID21448944
PMCPMC3076678
OpenAlexW1993048907

What OpenQuestion holds

Textmetadata
LicenceTDM
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.