Evidence map›Paper›PMID 24714627›Full record

ArticlePloS one2014

Dexamethasone alleviates tumor-associated brain damage and angiogenesis.

Zheng Fan, Tina Sehm, Manfred Rauh, Michael Buchfelder, Ilker Y Eyupoglu, Nicolai E Savaskan

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 7% 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

39 citing papers in PubMed, 2 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  14. In Vitro Angiogenesis Inhibition and Endothelial Cell Growth and Morphology.International journal of molecular sciences · 2022
    Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Controversial roles for dexamethasone in glioblastoma - Opportunities for novel vascular targeting therapies.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
    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 at 2 institutions in 1 country.

Zheng FanDepartment of Neurosurgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Bavaria, Germany.
Tina SehmDepartment of Neurosurgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Bavaria, Germany.
Manfred RauhDepartment of Pediatrics and Adolescent Medicine, University Hospital Erlangen, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Bavaria, Germany.
Michael BuchfelderDepartment of Neurosurgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Bavaria, Germany.
Ilker Y EyupogluDepartment of Neurosurgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Bavaria, Germany.
Nicolai E SavaskanDepartment of Neurosurgery, University Hospital of Erlangen, Friedrich Alexander University of Erlangen-Nuremberg, Erlangen, Bavaria, Germany.
Friedrich-Alexander-Universität Erlangen-Nürnberg · DEUniversitätsklinikum Erlangen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Children and adults with the most aggressive form of brain cancer, malignant gliomas or glioblastoma, often develop cerebral edema as a life-threatening complication. This complication is routinely treated with dexamethasone (DEXA), a steroidal anti-inflammatory drug with pleiotropic action profile. Here we show that dexamethasone reduces murine and rodent glioma tumor growth in a concentration-dependent manner. Low concentrations of DEXA are already capable of inhibiting glioma cell proliferation and at higher levels induce cell death. Further, the expression of the glutamate antiporter xCT (system Xc-; SLC7a11) and VEGFA is up-regulated after DEXA treatment indicating early cellular stress responses. However, in human gliomas DEXA exerts differential cytotoxic effects, with some human glioma cells (U251, T98G) resistant to DEXA, a finding corroborated by clinical data of dexamethasone non-responders. Moreover, DEXA-resistant gliomas did not show any xCT alterations, indicating that these gene expressions are associated with DEXA-induced cellular stress. Hence, siRNA-mediated xCT knockdown in glioma cells increased the susceptibility to DEXA. Interestingly, cell viability of primary human astrocytes and primary rodent neurons is not affected by DEXA. We further tested the pharmacological effects of DEXA on brain tissue and showed that DEXA reduces tumor-induced disturbances of the microenvironment such as neuronal cell death and tumor-induced angiogenesis. In conclusion, we demonstrate that DEXA inhibits glioma cell growth in a concentration and species-dependent manner. Further, DEXA executes neuroprotective effects in brains and reduces tumor-induced angiogenesis. Thus, our investigations reveal that DEXA acts pleiotropically and impacts tumor growth, tumor vasculature and tumor-associated brain damage.

Indexed as

AnimalsAnti-Inflammatory AgentsAstrocytesBrainBrain NeoplasmsCell Line, TumorCell ProliferationCells, CulturedDexamethasoneGene Expression Regulation, NeoplasticGliomaHumansMiceNeovascularization, PathologicRatsVascular Endothelial Growth Factor AAnti-Inflammatory AgentsDexamethasoneVascular Endothelial Growth Factor A

Identifiers

PMID24714627
PMCPMC3979667
OpenAlexW1968310941

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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.