Evidence map›Paper›PMID 22203790›Full record

ArticleTheScientificWorldJournal2011

Quercetin protects primary human osteoblasts exposed to cigarette smoke through activation of the antioxidative enzymes HO-1 and SOD-1.

Karl F Braun, Sabrina Ehnert, Thomas Freude, José T Egaña, Thilo L Schenck, Arne Buchholz, Andreas Schmitt, Sebastian Siebenlist, Lilianna Schyschka, Markus Neumaier and 2 more

Open access · goldAbstract read
In one paragraph

Article in TheScientificWorldJournal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

31 citing papers in PubMed, 73 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

12 authors at 2 institutions in 2 countries.

Karl F BraunDepartment of Traumatology, MRI, Techincal University of Munich, 80333 Munich, Germany.
Sabrina Ehnert
Thomas Freude
José T Egaña
Thilo L Schenck
Arne Buchholz
Andreas Schmitt
Sebastian Siebenlist
Lilianna Schyschka
Markus Neumaier
Ulrich Stöckle
Andreas K Nussler
Technical University of Munich · DEUniversity of Tübingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Smokers frequently suffer from impaired fracture healing often due to poor bone quality and stability. Cigarette smoking harms bone cells and their homeostasis by increased formation of reactive oxygen species (ROS). The aim of this study was to investigate whether Quercetin, a naturally occurring antioxidant, can protect osteoblasts from the toxic effects of smoking. Human osteoblasts exposed to cigarette smoke medium (CSM) rapidly produced ROS and their viability decreased concentration- and time-dependently. Co-, pre- and postincubation with Quercetin dose-dependently improved their viability. Quercetin increased the expression of the anti-oxidative enzymes heme-oxygenase- (HO-) 1 and superoxide-dismutase- (SOD-) 1. Inhibiting HO-1 activity abolished the protective effect of Quercetin. Our results demonstrate that CSM damages human osteoblasts by accumulation of ROS. Quercetin can diminish this damage by scavenging the radicals and by upregulating the expression of HO-1 and SOD-1. Thus, a dietary supplementation with Quercetin could improve bone matter, stability and even fracture healing in smokers.

Indexed as

AntioxidantsCell SurvivalCulture MediaEnzyme ActivationEnzyme InhibitorsHeme Oxygenase-1HumansOsteoblastsPrimary Cell CultureQuercetinReactive Oxygen SpeciesSmokingSuperoxide DismutaseSuperoxide Dismutase-1Time FactorsUp-RegulationAntioxidantsCulture MediaEnzyme InhibitorsHeme Oxygenase-1HMOX1 protein, humanQuercetinReactive Oxygen SpeciesSOD1 protein, humanSuperoxide DismutaseSuperoxide Dismutase-1cigarette smoke mediumheme-oxygenase-1.oxidative stressPrimary human osteoblastsQuercetin

Identifiers

PMID22203790
PMCPMC3236410
OpenAlexW2149648467

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.