Evidence map›Paper›PMID 32376456›Full record

ArticleFree radical biology & medicine2020

Quantitation of spin probe-detectable oxidants in cells using electron paramagnetic resonance spectroscopy: To probe or to trap?

John P Gotham, Rui Li, Trent E Tipple, Jack R Lancaster, Taiming Liu, Qian Li

Abstract read
In one paragraph

Article in Free radical biology & medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

12 citing papers in PubMed.

  1. Article
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  3. Article
  4. Review
  5. Article
  6. Article
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  9. Article
  10. Common methods in mitochondrial research (Review).International journal of molecular medicine · 2022
    Article
  11. Review
  12. Article
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.

John P GothamScience and Technology Honors College, University of Alabama at Birmingham, Birmingham, AL, 35294, USA; Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
Rui LiDivision of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
Trent E TippleDivision of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
Jack R LancasterDepartment of Pharmacology & Chemical Biology, Medicine, and Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15261, USA.
Taiming LiuDepartment of Pediatrics, Division of Neonatology, Loma Linda University School of Medicine, Loma Linda, CA, 92354, USA.
Qian LiDivision of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA. Electronic address: qianli@uab.edu.

Funding

Targeting Thioredoxin Reductase-1 to Prevent Bronchopulmonary DysplasiaR01HL119280 · NHLBI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI TIPPLE, TRENT · 2014 to 2018
$2.0M
NHLBI NIH HHS R01 HL119280
6 · The paper itself

Abstract

Electron Paramagnetic Resonance (EPR) spectroscopy coupled with spin traps/probes enables quantitative determination of reactive nitrogen and oxygen species (RNOS). Even with numerous studies using spin probes, the methodology has not been rigorously investigated. The autoxidation of spin probes has been commonly overlooked. Using the spin probe 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CMH), the present study has tested the effects of metal chelators, temperature, and oxygen content on the autoxidation of spin probes, where an optimized condition is refined for cell studies. The apparent rate of CMH autoxidation under this condition is 7.01 ± 1.60 nM/min, indicating low sensitivity and great variation of the CMH method and that CMH autoxidation rate should be subtracted from the generation rate of CMH-detectable oxidants (simplified as oxidants below) in samples. Oxidants in RAW264.7 cells are detected at an initial rate of 4.0 ± 0.7 pmol/min/10

Indexed as

OxidantsOxygenCold TemperatureCyclic N-OxidesElectron Spin Resonance SpectroscopyFree RadicalsReactive Oxygen SpeciesSpin LabelsCyclic N-OxidesFree RadicalsOxidantsOxygenReactive Oxygen SpeciesSpin Labels1-Hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine5,5-Dimethyl-1-pyrroline-N-OxideCMHDMPOElectron paramagnetic resonance spectroscopyEPRPhorbol-12-mysirate-13-acetatePMARAW264.7 cellReactive nitrogen species, spin probe, spin trapReactive oxygen speciesRNSROS

Identifiers

PMID32376456
PMCPMC7368495

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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.