Evidence map›Paper›PMID 24743551›Full record

Trial reportPloS one2014

Low-intensity pulsed ultrasound stimulation facilitates osteogenic differentiation of human periodontal ligament cells.

Bo Hu, Yuanyuan Zhang, Jie Zhou, Jing Li, Feng Deng, Zhibiao Wang, Jinlin Song

Open access · goldAbstract readClinical Trial
In one paragraph

Trial report in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 2 pooled it
4.4field-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

38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 87 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

7 authors at 2 institutions in 2 countries.

Bo HuChongqing key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China; College of Stomatology, Chongqing Medical University, Chongqing, China.
Yuanyuan ZhangWake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America.
Jie ZhouChongqing key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China; College of Stomatology, Chongqing Medical University, Chongqing, China.
Jing LiChongqing key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China; College of Stomatology, Chongqing Medical University, Chongqing, China.
Feng DengChongqing key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China; College of Stomatology, Chongqing Medical University, Chongqing, China.
Zhibiao WangCollege of Biomedical Engineering, Chongqing Medical University, Chongqing, China.
Jinlin SongChongqing key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, China; College of Stomatology, Chongqing Medical University, Chongqing, China.
Chongqing Medical University · CNForest Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human periodontal ligament cells (hPDLCs) possess stem cell properties, which play a key role in periodontal regeneration. Physical stimulation at appropriate intensities such as low-intensity pulsed ultrasound (LIPUS) enhances cell proliferation and osteogenic differentiation of mesechymal stem cells. However, the impacts of LIPUS on osteogenic differentiation of hPDLCs in vitro and its molecular mechanism are unknown. This study was undertaken to investigate the effects of LIPUS on osteogenic differentiation of hPDLCs. HPDLCs were isolated from premolars of adolescents for orthodontic reasons, and exposed to LIPUS at different intensities to determine an optimal LIPUS treatment dosage. Dynamic changes of alkaline phosphatase (ALP) activities in the cultured cells and supernatants, and osteocalcin production in the supernatants after treatment were analyzed. Runx2 and integrin β1 mRNA levels were assessed by reverse transcription polymerase chain reaction analysis after LIPUS stimulation. Blocking antibody against integrinβ1 was used to assess the effects of integrinβ1 inhibitor on LIPUS-induced ALP activity, osteocalcin production as well as calcium deposition. Our data showed that LIPUS at the intensity of 90 mW/cm2 with 20 min/day was more effective. The ALP activities in lysates and supernatants of LIPUS-treated cells started to increase at days 3 and 7, respectively, and peaked at day 11. LIPUS treatment significantly augmented the production of osteocalcin after day 5. LIPUS caused a significant increase in the mRNA expression of Runx2 and integrin β1, while a significant decline when the integrinβ1 inhibitor was used. Moreover, ALP activity, osteocalcin production as well as calcium nodules of cells treated with both daily LIPUS stimulation and integrinβ1 antibody were less than those in the LIPUS-treated group. In conclusion, LIPUS promotes osteogenic differentiation of hPDLCs, which is associated with upregulation of Runx2 and integrin β1, which may thus provide therapeutic benefits in periodontal tissue regeneration.

Indexed as

Cell DifferentiationOsteogenesisSoundAdolescentAntigens, DifferentiationCells, CulturedFemaleHumansMaleMesenchymal Stem CellsPeriodontal LigamentAntigens, Differentiation

Identifiers

PMID24743551
PMCPMC3990585
OpenAlexW2000891475

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.