Evidence map›Paper›PMID 28993271›Full record

ArticleFree radical biology & medicine2017

Temporal changes in glutathione biosynthesis during the lipopolysaccharide-induced inflammatory response of THP-1 macrophages.

Hongqiao Zhang, Honglei Liu, Lulu Zhou, Jenay Yuen, Henry Jay Forman

Abstract read
In one paragraph

Article in Free radical biology & medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

13 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Studying the molecular mechanisms of tef (Journal of functional foods · 2025
    Article
  3. Severity of oxidative stress as a hallmark in COVID-19 patients.European journal of medical research · 2023
    Article
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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.

Hongqiao ZhangAndrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, GER306B, Los Angeles, CA 90089-0191, USA. Electronic address: hongqiaz@usc.edu.
Honglei LiuChildren's Hospital Los Angeles, 4650 Sunset Blvd, Los Angeles, CA 90027, USA.
Lulu ZhouAndrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, GER306B, Los Angeles, CA 90089-0191, USA.
Jenay YuenAndrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, GER306B, Los Angeles, CA 90089-0191, USA.
Henry Jay FormanAndrus Gerontology Center of the Leonard Davis School of Gerontology, University of Southern California, 3715 McClintock Ave, GER306B, Los Angeles, CA 90089-0191, USA.
University of Southern California · USChildren's Hospital of Los Angeles · US

Funding

Human models of the particulate-induced inflammatory/antioxidant axis in agingR01ES023864 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI FORMAN, HENRY JAY · 2015 to 2019
$2.4M
Human models of the particulate-induced inflammatory/antioxidant axis in agingR56ES023864 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI FORMAN, HENRY JAY · 2014 to 2014
$150k
NIEHS NIH HHS R01 ES023864NIEHS NIH HHS R56 ES023864
6 · The paper itself

Abstract

How macrophages maintain redox homeostasis in the inflammatory process, in which a large amount of oxidants are produced, remains elusive. In this study, we investigated the temporal changes in the intracellular glutathione (GSH), the master antioxidant, and the expression of glutamate cysteine ligase (GCL), the rate-limiting enzyme for GSH biosynthesis, in the inflammatory response of human macrophages (THP1 cells) to lipopolysaccharide. Intracellular GSH concentration was decreased significantly in the early phase (~6h) of LPS exposure, and then gradually went back to the basal level in the late phase (9-24h). The expression level of the catalytic subunit of GCL (GCLC) followed a similar pattern of change as GSH: its mRNA and protein levels were reduced in the early phase and then back to basal level in the late phase. In contrast, the expression of the modifier subunit of GCL (GCLM) was significantly increased in the phase of LPS exposure. Activation Nrf2, the transcription factor involved in the induction of both GCLC and GCLM, occurred at as early as 3h after LPS exposure; whereas the activation of NF-κB occurred at as early as 30min. Inhibition of NF-κB signaling with SN50 prevented the decrease of GCLC and inhibited Nrf2 activation in response to LPS. These data demonstrate time-dependent changes in the expression of GCL and Nrf2 signaling during the inflammatory response, and that the regulation of GCLC and GCLM might be through different pathways in this process.

Indexed as

Gene Expression RegulationGlutamate-Cysteine LigaseGlutathioneHomeostasisHumansInflammationLipopolysaccharidesNF-E2-Related Factor 2NF-kappa BOxidation-ReductionPeptidesSignal TransductionTHP-1 CellsTime FactorsGCLC protein, humanGCLM protein, humanGlutamate-Cysteine LigaseGlutathioneLipopolysaccharidesNFE2L2 protein, humanNF-E2-Related Factor 2NF-kappa BPeptidesSN50 peptideGCLCGlutathioneInflammationLipopolysaccharideMacrophage

Identifiers

PMID28993271
PMCPMC5699958
OpenAlexW2763545425

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.