Evidence map›Paper›PMID 34360651›Full record

ArticleInternational journal of molecular sciences2021

Cold Atmospheric Plasma Changes the Amino Acid Composition of Solutions and Influences the Anti-Tumor Effect on Melanoma Cells.

Stephanie Arndt, Fadi Fadil, Katja Dettmer, Petra Unger, Marko Boskovic, Claudia Samol, Anja-Katrin Bosserhoff, Julia L Zimmermann, Michael Gruber, Wolfram Gronwald and 1 more

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 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 16% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
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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

11 authors at 3 institutions in 1 country.

Stephanie ArndtDepartment of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauss Allee 11, D-93053 Regensburg, Germany.
Fadi FadilInstitute of Functional Genomics, University of Regensburg, Am BioPark 9, D-93053 Regensburg, Germany.ORCID 0000-0002-9532-1901
Katja DettmerInstitute of Functional Genomics, University of Regensburg, Am BioPark 9, D-93053 Regensburg, Germany.ORCID 0000-0001-7337-2380
Petra UngerDepartment of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauss Allee 11, D-93053 Regensburg, Germany.
Marko BoskovicInstitute of Functional Genomics, University of Regensburg, Am BioPark 9, D-93053 Regensburg, Germany.
Claudia SamolInstitute of Functional Genomics, University of Regensburg, Am BioPark 9, D-93053 Regensburg, Germany.
Anja-Katrin BosserhoffInstitute of Biochemistry, University of Erlangen-Nuernberg, D-91054 Erlangen, Germany.ORCID 0000-0001-8147-394X
Julia L ZimmermannTerraplasma GmbH, D-85748 Garching, Germany.
Michael GruberDepartment of Anesthesiology, University Medical Center Regensburg, Regensburg, Franz-Josef-Strauss Allee 11, D-93053 Regensburg, Germany.ORCID 0000-0002-5509-9760
Wolfram GronwaldInstitute of Functional Genomics, University of Regensburg, Am BioPark 9, D-93053 Regensburg, Germany.ORCID 0000-0003-3646-0060
Sigrid KarrerDepartment of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauss Allee 11, D-93053 Regensburg, Germany.
University of Regensburg · DEUniversity Hospital Regensburg · DEFriedrich-Alexander-Universität Erlangen-Nürnberg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cold Atmospheric Plasma (CAP) is an ionized gas near room temperature. Its anti-tumor effect can be transmitted either by direct treatment or mediated by a plasma-treated solution (PTS), such as treated standard cell culture medium, which contains different amino acids, inorganic salts, vitamins and other substances. Despite extensive research, the active components in PTS and its molecular or cellular mechanisms are not yet fully understood. The purpose of this study was the measurement of the reactive species in PTS and their effect on tumor cells using different plasma modes and treatment durations. The PTS analysis yielded mode- and dose-dependent differences in the production of reactive oxygen and nitrogen species (RONS), and in the decomposition and modification of the amino acids Tyrosine (Tyr) and Tryptophan (Trp). The Trp metabolites Formylkynurenine (FKyn) and Kynurenine (Kyn) were produced in PTS with the 4 kHz (oxygen) mode, inducing apoptosis in Mel Im melanoma cells. Nitrated derivatives of Trp and Tyr were formed in the 8 kHz (nitrogen) mode, elevating the p16 mRNA expression and senescence-associated ß-Galactosidase staining. In conclusion, the plasma mode has a strong impact on the composition of the active components in PTS and affects its anti-tumor mechanism. These findings are of decisive importance for the development of plasma devices and the effectiveness of tumor treatment.

Indexed as

ApoptosisCells, CulturedCyclin-Dependent Kinase Inhibitor p16HumansMelanocytesMelanomaPlasma GasesReactive Nitrogen SpeciesReactive Oxygen SpeciesTryptophanTyrosineCDKN2A protein, humanCyclin-Dependent Kinase Inhibitor p16Plasma GasesReactive Nitrogen SpeciesReactive Oxygen SpeciesTryptophanTyrosineamino acidanti-tumorapoptosiscold atmospheric plasma (CAP)melanomaplasma-treated solution (PTS)senescence

Identifiers

PMID34360651
PMCPMC8346059
OpenAlexW3185896350

What OpenQuestion holds

Textmetadata
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.