Evidence map›Paper›PMID 22539993›Full record

ArticlePloS one2012

Mechanical strain regulates osteoblast proliferation through integrin-mediated ERK activation.

Yu-xian Yan, Yuan-wei Gong, Yong Guo, Qi Lv, Chun Guo, Yan Zhuang, Yuan Zhang, Ruixin Li, Xi-zheng Zhang

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
6.6field-weighted citation impact, top 2% 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

50 citing papers in PubMed, 130 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

9 authors at 3 institutions in 1 country.

Yu-xian YanInstitute of Medical Equipment, Academy of Military Medical Science, Tianjin, China.
Yuan-wei Gong
Yong Guo
Qi Lv
Chun Guo
Yan Zhuang
Yuan Zhang
Ruixin Li
Xi-zheng Zhang
Academy of Military Medical Sciences · CNChinese People's Armed Police Force Medical College Affiliated Hospital · CNChinese People's Armed Police Force

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mechanical strain plays a critical role in the proliferation, differentiation and maturation of bone cells. As mechanical receptor cells, osteoblasts perceive and respond to stress force, such as those associated with compression, strain and shear stress. However, the underlying molecular mechanisms of this process remain unclear. Using a four-point bending device, mouse MC3T3-E1 cells was exposed to mechanical tensile strain. Cell proliferation was determined to be most efficient when stimulated once a day by mechanical strain at a frequency of 0.5 Hz and intensities of 2500 µε with once a day, and a periodicity of 1 h/day for 3 days. The applied mechanical strain resulted in the altered expression of 1992 genes, 41 of which are involved in the mitogen-activated protein kinase (MAPK) signaling pathway. Activation of ERK by mechanical strain promoted cell proliferation and inactivation of ERK by PD98059 suppressed proliferation, confirming that ERK plays an important role in the response to mechanical strain. Furthermore, the membrane-associated receptors integrin β1 and integrin β5 were determined to regulate ERK activity and the proliferation of mechanical strain-treated MC3T3-E1 cells in opposite ways. The knockdown of integrin β1 led to the inhibition of ERK activity and cell proliferation, whereas the knockdown of integrin β5 led to the enhancement of both processes. This study proposes a novel mechanism by which mechanical strain regulates bone growth and remodeling.

Indexed as

Stress, Mechanical3T3 CellsAnimalsCell ProliferationEnzyme ActivationExtracellular Signal-Regulated MAP KinasesFlavonoidsGene Expression ProfilingIntegrin beta1Integrin beta ChainsMiceOsteoblastsPhosphorylationRNA InterferenceRNA, Small InterferingSignal Transduction2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-oneExtracellular Signal-Regulated MAP KinasesFlavonoidsIntegrin beta1integrin beta5Integrin beta ChainsRNA, Small Interfering

Identifiers

PMID22539993
PMCPMC3335094
OpenAlexW2007287226

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.