Evidence map›Paper›PMID 21455987›Full record

ArticleInternational journal of cancer2012

Growth-inhibitory and chemosensitizing effects of the glutathione-S-transferase-π-activated nitric oxide donor PABA/NO in malignant gliomas.

Evangelos Kogias, Nadja Osterberg, Brunhilde Baumer, Nikolaos Psarras, Christoph Koentges, Anna Papazoglou, Joseph E Saavedra, Larry K Keefer, Astrid Weyerbrock

Open access · hybridAbstract read
In one paragraph

Article in International journal of cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

19 citing papers in PubMed, 48 citations in OpenAlex.

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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 at 3 institutions in 2 countries.

Evangelos KogiasDepartment of Neurosurgery, University Medical Center Freiburg, Freiburg i.Br., Germany.
Nadja Osterberg
Brunhilde Baumer
Nikolaos Psarras
Christoph Koentges
Anna Papazoglou
Joseph E Saavedra
Larry K Keefer
Astrid Weyerbrock
University Medical Center Freiburg · DEIn-Q-Tel · USScience Applications International Corporation (United States) · US

Funding

Using Diazeniumdiolate Chemistry to Design Nitric Oxide-Based TherapiesZIABC005673 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI KEEFER, LARRY K · 2009 to 2015
$5.5M
Diazeniumdiolates as Broad-Spectrum Anticancer AgentsZIABC011188 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI KEEFER, LARRY K · 2009 to 2015
$5.2M
Using Diazeniumdiolate Chemistry to Design Nitric Oxide-Based TherapiesZ01BC005673 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI KEEFER, LARRY K · 1996 to 2008
$2.9M
CCR NIH HHS HHSN261200800001CIntramural NIH HHS Z01 BC005673NCI NIH HHS HHSN261200800001E
6 · The paper itself

Abstract

Glutathione-S-transferases (GSTs) are upregulated in malignant gliomas and contribute to their chemoresistance. The nitric oxide (NO) donor PABA/NO (O(2) -{2,4-dinitro-5-[4-(N-methylamino)benzoyloxy]phenyl} 1-(N,N-dimethylamino)diazen-1-ium-1,2-diolate) generates NO upon selective enzymatic activation by GST-π-inducing selective biological effects in tumors. Tumor cell killing and chemosensitization were observed in a variety of tumors after exposure to GST-activated NO donor drugs. In our project, cytotoxic and chemosensitizing effects of PABA/NO in combination with carboplatin (CPT) and temozolomide (TMZ) were studied in human U87 glioma cells in vitro and in vivo. U87 glioma cells were exposed to PABA/NO alone or in combination with CPT or TMZ for 24 hr. Cell viability was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay after 24-hr incubation and 48 hr after drug removal. The antiproliferative effect of PABA/NO was assessed in an intracranial U87 glioma nude rat model comparing subcutaneous administration and intratumoral delivery by convection-enhanced delivery. PABA/NO monotherapy showed a strong dose-dependent growth-inhibitory effect in U87 glioma cells in vitro, and a strong synergistic effect was observed after concomitant treatment with TMZ, but not with CPT. Systemic and intratumoral PABA/NO administration significantly reduced cell proliferation, but this did not result in prolonged survival in nude rats with intracranial U87 gliomas. PABA/NO has potent antiproliferative effects, sensitizes U87 glioma cells to TMZ in vitro and shows some in vivo efficacy. Further studies are still required to consolidate the role of NO donor therapy in glioma treatment.

Indexed as

para-Aminobenzoates4-Aminobenzoic AcidAnimalsAntineoplastic Combined Chemotherapy ProtocolsAzo CompoundsBrain NeoplasmsCarboplatinCell Line, TumorCell SurvivalDacarbazineDrug Evaluation, PreclinicalEnzyme ActivationGliomaGlutathione S-Transferase piGrowth InhibitorsHumans4-Aminobenzoic AcidAzo CompoundsCarboplatinDacarbazineGlutathione S-Transferase piGrowth InhibitorsNitric Oxide DonorsO(2)-(2,4-dinitro-5-(N-methyl-N-4-carboxyphenylamino)phenyl 1-N,N-dimethylamino)diazen-1-ium-1,2-diolatepara-AminobenzoatesTemozolomide

Identifiers

PMID21455987
PMCPMC3161158
OpenAlexW2014282724

What OpenQuestion holds

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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.