Evidence map›Paper›PMID 34575921›Full record

ArticleInternational journal of molecular sciences2021

In Vivo Study of the Efficacy and Safety of 5-Aminolevulinic Radiodynamic Therapy for Glioblastoma Fractionated Radiotherapy.

Junko Takahashi, Shinsuke Nagasawa, Motomichi Doi, Masamichi Takahashi, Yoshitaka Narita, Junkoh Yamamoto, Mitsushi J Ikemoto, Hitoshi Iwahashi

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
7.0field-weighted citation impact, top 2% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
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  5. Review
  6. Therapeutic effects ofBiomedical physics & engineering express · 2022
    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 5 institutions in 1 country.

Junko TakahashiGraduate School of Information, Production and Systems, Waseda University, Fukuoka 808-0135, Japan.ORCID 0000-0002-1941-0136
Shinsuke NagasawaDepartment of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan.ORCID 0000-0002-1592-4826
Motomichi DoiBiomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8566, Japan.ORCID 0000-0002-7837-3056
Masamichi TakahashiDepartment of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan.ORCID 0000-0001-8792-1993
Yoshitaka NaritaDepartment of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan.
Junkoh YamamotoDepartment of Neurosurgery, University of Occupational and Environmental Health, Fukuoka 807-8555, Japan.
Mitsushi J IkemotoHealth and Medical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8566, Japan.
Hitoshi IwahashiThe United Graduate School of Agricultural Science, Gifu University, Gifu 501-1193, Japan.
National Institute of Advanced Industrial Science and Technology · JPGifu University · JPKyoto Prefectural University of Medicine · JPUniversity of Occupational and Environmental Health Japan · JPWaseda University · JP

Funding

Japan Society for the Promotion of Science 19K22609Japan Society for the Promotion of Science 20K08003Japan Society for the Promotion of Science JP18H02705
6 · The paper itself

Abstract

To treat malignant glioma, standard fractionated radiotherapy (RT; 60 Gy/30 fractions over 6 weeks) was performed post-surgery in combination with temozolomide to improve overall survival. Malignant glioblastoma recurrence rate is extremely high, and most recurrent tumors originate from the excision cavity in the high-dose irradiation region. In our previous study, protoporphyrin IX physicochemically enhanced reactive oxygen species generation by ionizing radiation and combined treatment with 5-aminolevulinic acid (5-ALA) and ionizing radiation, while radiodynamic therapy (RDT) improved tumor growth suppression in vivo in a melanoma mouse model. We examined the effect of 5-ALA RDT on the standard fractionated RT protocol using U251MG- or U87MG-bearing mice. 5-ALA was orally administered at 60 or 120 mg/kg, 4 h prior to irradiation. In both models, combined treatment with 5-ALA slowed tumor progression and promoted regression compared to treatment with ionizing radiation alone. The standard fractionated RT protocol of 60 Gy in 30 fractions with oral administration of 120 and 240 mg/kg 5-ALA, the human equivalent dose of photodynamic diagnosis, revealed no significant increase in toxicity to normal skin or brain tissue compared to ionizing radiation alone. Thus, RDT is expected to enhance RT treatment of glioblastoma without severe toxicity under clinically feasible conditions.

Indexed as

Dose Fractionation, RadiationPhotochemotherapyRadiation, IonizingRadiotherapyAminolevulinic AcidAnimalsApoptosisBrain NeoplasmsCell Line, TumorCombined Modality TherapyDisease Models, AnimalDose-Response Relationship, RadiationGlioblastomaHumansMicePhotosensitizing AgentsAminolevulinic AcidPhotosensitizing Agents5-aminolevulinic acidATPase inhibitory factor 1fractionated radiotherapyglioblastomagliomaprotoporphyrin IXradiation therapyradiodynamic therapyU251MGU87MG

Identifiers

PMID34575921
PMCPMC8470662
OpenAlexW3196627712

What OpenQuestion holds

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LicenceCC BY
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.