Evidence map›Paper›PMID 19026738›Full record

ArticleFree radical biology & medicine2009

HPLC study of oxidation products of hydroethidine in chemical and biological systems: ramifications in superoxide measurements.

Jacek Zielonka, Micael Hardy, B Kalyanaraman

Erratum issuedAbstract read
In one paragraph

Article in Free radical biology & medicine, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

78 citing papers in PubMed, 147 citations in OpenAlex.

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  9. Ref-1 protects against FeClThe Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology · 2021
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18 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

3 authors at 2 institutions in 2 countries.

Jacek ZielonkaDepartment of Biophysics and Free Radical Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
Micael Hardy
B Kalyanaraman
Medical College of Wisconsin · USAix-Marseille Université · FR

Funding

NITRIC OXIDE MEDICATED OXIDATION/NITRATIONR01HL063119 · NHLBI · MEDICAL COLLEGE OF WISCONSIN · PI KALYANARAMAN, BALARAMAN · 1999 to 2011
$3.3M
BIOCARBONATE ENHANCES PEROXIDATION OF SOD/ALS MUTANTSR01NS040494 · NINDS · MEDICAL COLLEGE OF WISCONSIN · PI KALYANARAMAN, BALARAMAN · 2000 to 2008
$1.9M
Peroxide, NO and Iron Signaling in Endothelial DamageR01HL073056 · NHLBI · MEDICAL COLLEGE OF WISCONSIN · PI KALYANARAMAN, BALARAMAN · 2003 to 2007
$1.5M
NHLBI NIH HHS HL063119NHLBI NIH HHS HL073056NHLBI NIH HHS R01 HL063119NHLBI NIH HHS R01 HL073056NINDS NIH HHS NS40494NINDS NIH HHS R01 NS040494
6 · The paper itself

Abstract

Methods for the detection and quantitation of hydroethidine (HE) and its oxidation products by HPLC analysis are described. Synthetic methods for preparation of authentic standards (2-hydroxyethidium and diethidium) are provided. Potential applications of the HPLC methods to chemical and biological systems are discussed. Specific examples of chromatograms obtained using UV-Vis absorption, fluorescence, electrochemical, and mass spectrometry detectors are provided. The development of a dual electrochemical and fluorescence detection methodology and its applications are described. The HPLC-based method enables analyses of HE and its oxidation products such as ethidium and the dimeric products of HE. The ramifications of HPLC measurement of HE and its oxidation products in the detection and quantitation of 2-hydroxyethidium, the diagnostic marker product of superoxide and HE, in the intracellular milieu are discussed. Similarly, mitochondria-targeted HE conjugated to a triphenylphosphonium group (Mito-HE or Mito-SOX) also forms oxidation products (dimers of Mito-HE and Mito-E+) that can affect the detection and quantitation of 2-hydroxy-mito-ethidium, the diagnostic marker product of Mito-HE and superoxide in mitochondria.

Indexed as

Chromatography, High Pressure LiquidModels, ChemicalBiomarkersEthidiumFluorescenceHumansMass SpectrometryMitochondriaMolecular Diagnostic TechniquesOxidation-ReductionPhenanthridinesProtein Sorting SignalsProtein TransportSuperoxides2-hydroxyethidiumBiomarkersdiethidiumEthidiumhydroethidinePhenanthridinesProtein Sorting SignalsSuperoxides

Identifiers

PMID19026738
PMCPMC3375818
OpenAlexW1990163734

What OpenQuestion holds

Textmetadata
LicenceTDM
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.