Evidence map›Paper›PMID 32608338›Full record

ArticleTechnology in cancer research & treatment

Delivery of Radiation at the Lowest Dose Rate by a Modern Linear Accelerator is Most Effective in Inhibiting Prostate Cancer Growth.

Keren Tazat, Oleg Reshetnyak, Natan Shtraus, Ifat Sayag, Nicola J Mabjeesh, Sharon Amir

Open access · goldAbstract read
In one paragraph

Article in Technology in cancer research & treatment. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 40% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. 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.

Keren TazatProstate Cancer Research Laboratory, Tel Aviv University, Tel Aviv, Israel.
Oleg ReshetnyakProstate Cancer Research Laboratory, Tel Aviv University, Tel Aviv, Israel.
Natan ShtrausInstitute of Radiotherapy, Tel Aviv Medical Center, Tel Aviv, Israel.
Ifat SayagProstate Cancer Research Laboratory, Tel Aviv University, Tel Aviv, Israel.
Nicola J MabjeeshProstate Cancer Research Laboratory, Tel Aviv University, Tel Aviv, Israel.
Sharon AmirProstate Cancer Research Laboratory, Tel Aviv University, Tel Aviv, Israel.ORCID 0000-0002-1692-3593
Tel Aviv University · ILBen-Gurion University of the Negev · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeExternal beam radiotherapy is one of the treatment options for organ-confined prostate cancer. A total dose of 70 to 81 Gray (Gy) is given daily (1.8-2.5 Gy/d), with a dose rate of 3 to 6 Gy/min over 28 to 45 treatments during 8 to 9 weeks. We applied the latest technological development in linear accelerators for enabling a wide range of dose rates (from 0.2-21 Gy/min) to test the effect of different delivery dose rates on prostate tumor growth in an animal xenograft model. MATERIALS AND

methodsA prostate cancer xenograft model was established in CD1/nude mice by means of PC-3 and CL-1 cells. The animals were radiated by a TrueBeam linear accelerator that delivered 4 dose rates ranging from 0.6 to 14 Gy/min, and reaching a total dose of 20 Gy. The mice were weighed and monitored for tumor development twice weekly. A 2-way analysis of variance was used to compare statistical differences between the groups.

resultsTumor growth was inhibited by radiation at all 4 dose rates in the 20 study mice compared to no radiation (n = 5, controls). The most significant reduction in tumor volumes was observed when the same dose of radiation was delivered at a rate of 0.6 Gy/min (

conclusionsDelivery of radiation with a TrueBeam linear accelerator at the lowest possible rate was most effective in prostate cancer growth inhibition and might be considered a preferential treatment mode for localized prostate cancer.

Indexed as

Particle AcceleratorsRadiotherapy DosageAnimalsCell Line, TumorDisease Models, AnimalDose-Response Relationship, RadiationHumansMaleMiceProstatic NeoplasmsTreatment OutcomeTumor BurdenXenograft Model Antitumor Assaysdose ratelinear acceleratorprostate cancerradiationxenograft model

Identifiers

PMID32608338
PMCPMC7331765
OpenAlexW3038886170

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.