Evidence map›Paper›PMID 22284807›Full record

ArticleRadiation oncology (London, England)2012

In vitro evaluation of photon and carbon ion radiotherapy in combination with chemotherapy in glioblastoma cells.

Stephanie E Combs, Lisa Zipp, Stefan Rieken, Daniel Habermehl, Stefan Brons, Marcus Winter, Thomas Haberer, Jürgen Debus, Klaus-Josef Weber

Abstract readEvaluation Study
In one paragraph

Article in Radiation oncology (London, England), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed.

  1. Review
  2. Review
  3. Frontiers in oncology · 2023
    Article
  4. Article
  5. Comparison of carbon ion and photon reirradiation for recurrent glioblastoma.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2022
    Article
  6. Review
  7. Research Progress of Heavy Ion Radiotherapy for Non-Small-Cell Lung Cancer.International journal of molecular sciences · 2022
    Review
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  9. 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

9 authors.

Stephanie E CombsDepartment of Radiation Oncology, University of Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany. stephanie.combs@med.uni-heidelberg.de
Lisa Zipp
Stefan Rieken
Daniel Habermehl
Stefan Brons
Marcus Winter
Thomas Haberer
Jürgen Debus
Klaus-Josef Weber

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo evaluate the cytotoxic effect of carbon ion radiotherapy and chemotherapy in glioblastoma cells in vitro. METHODS AND MATERIALS: The human glioblastoma (GBM) cell line U87 was irradiated with photon radiotherapy (RT) doses of 2 Gy, 4 Gy and 6 Gy. Likewise, irradiation with carbon ions was performed with single carbon doses of 0.125, 0.5, 2 and 3 Gy. Four chemotherapeutic substances, camptothecin, gemcitabine, paclitaxel and cisplatinum, were used for single and combination experiments. The assessment of the effect of single and double treatment on cell viability was performed using the clonogenic growth assay representing the radiobiological gold standard.

resultsThe RBE of carbon ions ranges between 3.3 and 3.9 depending on survival level and dose. All chemotherapeutic substances showed a clear does-response relationhips. in their characteristic concentrations. For subsequent combination experiments, two dose levels leading to low and medium reduction of cell survival were chosen. Combination experiments showed additive effects independently of the drugs' mechanisms of action. Paclitaxel and campthothecin demonstrated the most prominent cytotoxic effect in combination with carbon ion radiotherapy.

conclusionIn conclusion, combination of carbon ion radiotherapy with chemotherapies of different mechanisms of action demonstrates additive effects. The most dominant effect was produced by paclitaxel, followed by camptothecin, as espected from previously published work. The present data serve as an important radiobiological basis for further combination experiments, as well as clinical studies on combination treatments.

Indexed as

ChemoradiotherapyAntineoplastic Combined Chemotherapy ProtocolsCamptothecinCarbonCell Line, TumorCisplatinDeoxycytidineDose-Response Relationship, RadiationGemcitabineGlioblastomaHumansIn Vitro TechniquesPaclitaxelPhotonsTumor Stem Cell AssayCamptothecinCarbonCisplatinDeoxycytidineGemcitabinePaclitaxel

Identifiers

PMID22284807
PMCPMC3398277

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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.