Evidence map›Paper›PMID 27758118›Full record

ArticleAntioxidants & redox signaling2017

Blockade of Glutamine Synthetase Enhances Inflammatory Response in Microglial Cells.

Erika M Palmieri, Alessio Menga, Aurore Lebrun, Douglas C Hooper, D Allan Butterfield, Massimiliano Mazzone, Alessandra Castegna

Open access · hybridAbstract read
In one paragraph

Article in Antioxidants & redox signaling, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

43 citing papers in PubMed, 70 citations in OpenAlex.

  1. Glutamine metabolism in health and disease.Signal transduction and targeted therapy · 2026
    Review
  2. Metabolic Reprogramming of Microglia in Neuroinflammation and Depression.International journal of molecular sciences · 2026
    Review
  3. Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. The role of microglia in neuropsychiatric disorders and suicide.European archives of psychiatry and clinical neuroscience · 2022
    Review
  19. Review
  20. 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

7 authors at 5 institutions in 3 countries.

Erika M Palmieri1 Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari , Bari, Italy .
Alessio Menga2 National Cancer Research Center, Istituto Tumori 'Giovanni Paolo II,' Bari, Italy .
Aurore Lebrun3 Department of Cancer Biology, Thomas Jefferson University , Philadelphia, Pennsylvania.
Douglas C Hooper3 Department of Cancer Biology, Thomas Jefferson University , Philadelphia, Pennsylvania.
D Allan Butterfield5 Department of Chemistry, University of Kentucky , Lexington, Kentucky.
Massimiliano Mazzone7 Laboratory of Tumor Inflammation and Angiogenesis, Department of Oncology, University of Leuven , Leuven, Belgium .
Alessandra Castegna1 Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari , Bari, Italy .
Istituto Tumori Bari · ITThomas Jefferson University · USUniversity of Bari Aldo Moro · ITUniversity of Kentucky · USVIB-KU Leuven Center for Cancer Biology · BE

Funding

X-Ray Crystallography and Macromolecular CharacterizationP30CA056036 · NCI · THOMAS JEFFERSON UNIVERSITY · PI Andrew Chapman · 1995 to 2026
$94.8M
NCI NIH HHS P30 CA056036
6 · The paper itself

Abstract

aimsMicroglial cells are brain-resident macrophages engaged in surveillance and maintained in a constant state of relative inactivity. However, their involvement in autoimmune diseases indicates that in pathological conditions microglia gain an inflammatory phenotype. The mechanisms underlying this change in the microglial phenotype are still unclear. Since metabolism is an important modulator of immune cell function, we focused our attention on glutamine synthetase (GS), a modulator of the response to lipopolysaccharide (LPS) activation in other cell types, which is expressed by microglia.

resultsGS inhibition enhances release of inflammatory mediators of LPS-activated microglia in vitro, leading to perturbation of the redox balance and decreased viability of cocultured neurons. GS inhibition also decreases insulin-mediated glucose uptake in microglia. In vivo, microglia-specific GS ablation enhances expression of inflammatory markers upon LPS treatment. In the spinal cords from experimental autoimmune encephalomyelitis (EAE), GS expression levels and glutamine/glutamate ratios are reduced. INNOVATION: Recently, metabolism has been highlighted as mediator of immune cell function through the discovery of mechanisms that (behind these metabolic changes) modulate the inflammatory response. The present study shows for the first time a metabolic mechanism mediating microglial response to a proinflammatory stimulus, pointing to GS activity as a master modulator of immune cell function and thus unraveling a potential therapeutic target.

conclusionsOur study highlights a new role of GS in modulating immune response in microglia, providing insights into the pathogenic mechanisms associated with inflammation and new strategies of therapeutic intervention. Antioxid. Redox Signal. 26, 351-363.

Indexed as

AnimalsBiomarkersCells, CulturedCell SurvivalDisease Models, AnimalEncephalomyelitis, Autoimmune, ExperimentalEnzyme ActivationFemaleGene ExpressionGlucoseGlutamate-Ammonia LigaseInflammationInsulinLipopolysaccharidesMetabolomeMetabolomicsBiomarkersGlucoseGlutamate-Ammonia LigaseInsulinLipopolysaccharidesNitric OxideReactive Oxygen Speciesglutamineglutamine synthetaseinsulin resistancemicroglianeuroinflammation

Identifiers

PMID27758118
PMCPMC5346956
OpenAlexW2535939126

What OpenQuestion holds

Textmetadata
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.