Evidence map›Paper›PMID 32910715›Full record

ArticleInnate immunity2021

Metabolomic analysis of spontaneous neutrophil apoptosis reveals the potential involvement of glutathione depletion.

Xiong Yuyun, Yu Fan, Wei Weiping, Yin Qing, Sun Bingwei

Open access · goldAbstract read
In one paragraph

Article in Innate immunity, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 30% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 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

5 authors at 2 institutions in 1 country.

Xiong YuyunDepartment of Clinical Laboratory, Affiliated Hospital of Jiangsu University, People's Republic of China.
Yu FanDepartment of Clinical Laboratory, Affiliated Hospital of Jiangsu University, People's Republic of China.
Wei WeipingDepartment of Clinical Laboratory, Affiliated Hospital of Jiangsu University, People's Republic of China.
Yin QingDepartment of Clinical Laboratory, Affiliated Hospital of Jiangsu University, People's Republic of China.
Sun BingweiDepartment of Burn and Plastic Surgery, Affiliated Suzhou Hospital of Nanjing Medical University, People's Republic of China.ORCID 0000-0002-7083-8525
Jiangsu University · CNNanjing Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Spontaneous apoptosis of neutrophils plays a key role in maintaining immune homeostasis and resolving inflammation. However, the mechanism triggering this apoptosis remains obscure. In the present study, we performed a global metabolomics analysis of neutrophils undergoing spontaneous apoptosis by using hydrophilic interaction chromatography ultra-high-performance liquid chromatography-tandem quadrupole/time-of-flight mass spectrometry and found 23 metabolites and 42 related pathways that were altered in these cells. Among them, glutathione, which is known to be involved in apoptosis, was particularly interesting. We found that L-pyroglutamic acid, glutamate, and their glutathione-mediated embolic pathways were all changed. Our findings confirmed the glutathione levels decreased in apoptotic neutrophils. Exogenous glutathione and LPS treatment delayed neutrophil apoptosis and decreased the levels of pro-apoptotic protein caspase-3. γ-glutamylcyclotransferase, 5-oxoprolinase, and ChaC1, which participated in glutathione degradation, were all activated. At the same time, the down-regulation of ATP production suggested the activity of glutathione biosynthesis may be attenuated even if glutamate-cysteine ligase and glutathione synthase, which are two ATP-dependent enzymes participating in glutathione biosynthesis, were enhanced. To our knowledge, this is the first report highlighting a global metabolomics analysis using hydrophilic interaction chromatography ultra-high-performance liquid chromatography-tandem quadrupole/time-of-flight mass spectrometry and the potential involvement of glutathione depletion in spontaneous apoptosis of neutrophils demonstrating that LPS could delay this process.

Indexed as

ApoptosisMetabolomicsAdenosine TriphosphateAnimalsChromatography, High Pressure LiquidGlutamatesGlutathioneLipopolysaccharidesMaleMiceMice, Inbred C57BLNeutrophilsPyrrolidonecarboxylic AcidSignal TransductionTandem Mass SpectrometryAdenosine TriphosphateGlutamatesGlutathioneLipopolysaccharidesPyrrolidonecarboxylic AcidapoptosisglutathionelipopolysaccharidemetabolomicsNeutrophils

Identifiers

PMID32910715
PMCPMC7780355
OpenAlexW3086657157

What OpenQuestion holds

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Registered trials

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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.