Evidence map›Paper›PMID 11774032›Full record

Trial reportNeoplasia (New York, N.Y.)

Hypoxia and VEGF mRNA expression in human tumors.

L S Ziemer, C J Koch, A Maity, D P Magarelli, A M Horan, S M Evans

Open access · goldAbstract readClinical TrialClinical Trial, Phase IValidation Study
In one paragraph

Trial report in Neoplasia (New York, N.Y.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

20 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. VEGF deficit is involved in endothelium dysfunction in preeclampsia.Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban · 2010
    Article
  11. Article
  12. Article
  13. Article
  14. Serum level of vascular endothelial growth factor in patients with obstructive sleep apnea hypopnea syndrome.Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban · 2007
    Article
  15. Review
  16. Article
  17. Article
  18. Gene expression profiling reveals molecularly and clinically distinct subtypes of glioblastoma multiforme.Proceedings of the National Academy of Sciences of the United States of America · 2005
    Article
  19. Article
  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

6 authors at 1 institution in 1 country.

L S ZiemerSchool of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
C J Koch
A Maity
D P Magarelli
A M Horan
S M Evans
University of Pennsylvania · US

Funding

DOES HYPOXIA PREDICT RADIATION/SURGICAL TUMOR RESPONSE?R01CA075285 · NCI · UNIVERSITY OF PENNSYLVANIA · PI EVANS, SYDNEY M · 1997 to 2005
$2.0M
NCI NIH HHS CA 75285NCI NIH HHS R01 CA075285
6 · The paper itself

Abstract

High expression of circulating plasma vascular endothelial growth factor (VEGF) in patients with cancer is an indicator of poor treatment response. Similarly, hypoxia in tumors, as measured by oxygen needle electrodes, has been found to predict for tumor-treatment failure. These two predictors may be related because hypoxia is a potent stimulator of VEGF expression in vitro. However, the demonstration of a relationship between hypoxia and VEGF in human tumors has, to date, been indirect or even negative. The purpose of this study was to test whether this unexpected result was caused by factors unique to human tumors, or whether the prior results could have been influenced by the known complexities of VEGF regulation. Therefore, we undertook a direct assessment of VEGF induction in human tumors using in situ hybridization and compared its distribution with that of hypoxia, as measured by the distribution of adducts of the hypoxia marker EF5. The distribution of both markers was assessed in relationship to the distribution of blood vessels, as measured by antibodies to CD31. Our hypothesis was that VEGF mRNA and hypoxia would colocalize, assuming that detectability of the former was not limiting. Four squamous cell carcinomas, three sarcomas and one glioblastoma multiforme were studied. When VEGF mRNA signal was detectable, its maxima colocalized with regional maxima of EF5 binding. The strongest levels of both signals were sometimes adjacent to regions of tissue necrosis. However, we were unable to predict absolute levels of EF5 binding based on absolute levels of VEGF mRNA. Conversely, for all tumors studied, regions with relatively low levels of EF5 binding had relatively low or undetectable VEGF mRNA. We found moderate EF5 binding in some keratinized cells but VEGF mRNA was not expressed by these differentiated cells. The paradigm that hypoxia and VEGF expression are linked in human tumors is supported by the data presented herein. A better understanding of the biology behind VEGF expression, including its modulation by hypoxia, is important for optimizing its use as a prognostic indicator and/or modulating its presence with biologic therapies.

Indexed as

EtanidazoleGene Expression Regulation, NeoplasticHydrocarbons, FluorinatedBiomarkersBrain NeoplasmsCarcinoma, Squamous CellCell DifferentiationCell HypoxiaColonic NeoplasmsEndothelial Growth FactorsFemaleFluorocarbonsGlioblastomaHumansIn Situ HybridizationLeiomyosarcoma2-(2-nitro-1H-imidazol-1-yl)-N-(2,2,3,3,3-pentafluoropropyl)acetamideBiomarkersEndothelial Growth FactorsEtanidazoleFluorocarbonsHydrocarbons, FluorinatedLymphokinesNeoplasm ProteinsOxygenPlatelet Endothelial Cell Adhesion Molecule-1RNA, MessengerRNA, NeoplasmVascular Endothelial Growth Factor AVascular Endothelial Growth Factors

Identifiers

PMID11774032
PMCPMC1506560
OpenAlexW2019511854

What OpenQuestion holds

Textmetadata
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.