Evidence map›Paper›PMID 24666891›Full record

ArticleCell proliferation2014

Quercetin ameliorates tunicamycin-induced endoplasmic reticulum stress in endothelial cells.

N Suganya, E Bhakkiyalakshmi, S Suriyanarayanan, R Paulmurugan, K M Ramkumar

Open access · bronzeAbstract read
In one paragraph

Article in Cell proliferation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

33 citing papers in PubMed, 76 citations in OpenAlex.

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  6. Nutrients · 2024
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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 3 institutions in 2 countries.

N SuganyaDepartment of Biotechnology, School of Bioengineering, SRM University, Kattankulathur, 603 203, India.
E Bhakkiyalakshmi
S Suriyanarayanan
R Paulmurugan
K M Ramkumar
SRM Institute of Science and Technology · INJSS Academy of Higher Education and Research · INStanford University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveEndothelial dysfunction highlights that it is a potential contributor in the pathogenesis of vascular complications arising from endoplasmic reticulum stress (ER stress) and has been emerging as a main causative factor in vascular failure. Here, we hypothesize that the natural flavonoid, quercetin plays an effective role in reducing ER stress in human umbilical vein endothelial cells. MATERIALS AND

methodsHuman umbilical vein endothelial cells were pre-treated with different concentrations of quercetin (0-100 μm) before inducing ER stress using tunicamycin (TUN) (0.75 μg/ml); cytotoxicity was assessed by MTT assay. Expression levels of ER stress responsive genes, antioxidant enzymes and apoptotic markers were assessed by qRT-PCR, while roles of caspase-3 and PARP cleavage were measured by western blot analysis.

resultsQuercetin pre-treatment at 25 and 50 μm had a cytoprotective effect on cells against TUN-induced toxicity. Quercetin administration modulated expression level of ER stress genes coding for glucose-regulated protein 78 (GRP78) and C/EBP-homologous protein (CHOP), and antioxidant enzymes such as superoxide dismutase and catalase, along with free radical generation assessed by malondialdehyde assay. Induction of apoptosis was prevented with reduction in expression level of Bax, and concomitant increase in Bcl-2 levels, thus proving its potential against ER stress.

conclusionThe current study indicates that quercetin modulated stress responsive genes GRP78 and CHOP, helping endothelial cells prevent TUN-induced ER stress.

Indexed as

Anti-Bacterial AgentsAntioxidantsApoptosisbcl-2-Associated X ProteinCaspasesCatalaseEndoplasmic Reticulum Chaperone BiPEndoplasmic Reticulum StressHeat-Shock ProteinsHumansHuman Umbilical Vein Endothelial CellsMalondialdehydePoly(ADP-ribose) PolymerasesProto-Oncogene Proteins c-bcl-2QuercetinSuperoxide DismutaseAnti-Bacterial AgentsAntioxidantsbcl-2-Associated X ProteinCaspasesCatalaseDDIT3 protein, humanEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsHSPA5 protein, humanMalondialdehydePoly(ADP-ribose) PolymerasesProto-Oncogene Proteins c-bcl-2QuercetinSuperoxide DismutaseTranscription Factor CHOPTunicamycin

Identifiers

PMID24666891
PMCPMC6496885
OpenAlexW2071553197

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.