Evidence map›Paper›PMID 22803011›Full record

ArticleJournal of periodontal & implant science2012

Heat or radiofrequency plasma glow discharge treatment of a titanium alloy stimulates osteoblast gene expression in the MC3T3 osteoprogenitor cell line.

Bruce E Rapuano, Kyle Hackshaw, Daniel E Macdonald

Open access · hybridAbstract read
In one paragraph

Article in Journal of periodontal & implant science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

6 citing papers in PubMed, 11 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

3 authors at 2 institutions in 1 country.

Bruce E RapuanoHospital for Special Surgery affiliated with the Weill Medical College of Cornell University, New York, NY, USA.
Kyle Hackshaw
Daniel E Macdonald
Cornell University · USHospital for Special Surgery · US

Funding

Modulation of fibronectin to improve integration of dental implant materialsR01DE017695 · NIDCR · HOSPITAL FOR SPECIAL SURGERY · PI MACDONALD, DANIEL E · 2007 to 2011
$2.4M
EXTRAMURAL RESEARCH FACILITIES CONSTRUCTIONC06RR012538 · NCRR · HOSPITAL FOR SPECIAL SURGERY · PI BOSKEY, ADELE L · 1997 to 1997
–
NCRR NIH HHS C06 RR012538NIDCR NIH HHS R01 DE017695
6 · The paper itself

Abstract

purposeThe purpose of this study was to determine whether increasing the Ti6Al4V surface oxide negative charge through heat (600℃) or radiofrequency plasma glow discharge (RFGD) pretreatment, with or without a subsequent coating with fibronectin, stimulated osteoblast gene marker expression in the MC3T3 osteoprogenitor cell line.

methodsQuantitative real-time polymerase chain reaction was used to measure changes over time in the mRNA levels for osteoblast gene markers, including alkaline phosphatase, bone sialoprotein, collagen type I (α1), osteocalcin, osteopontin and parathyroid hormone-related peptide (PTH-rP), and the osteoblast precursor genes Runx2 and osterix.

resultsOsteoprogenitors began to differentiate earlier on disks that were pretreated with heat or RFGD. The pretreatments increased gene marker expression in the absence of a fibronectin coating. However, pretreatments increased osteoblast gene expression for fibronectin-coated disks more than uncoated disks, suggesting a surface oxide-mediated specific enhancement of fibronectin's bioactivity. Heat pretreatment had greater effects on the mRNA expression of genes for PTH-rP, alkaline phosphatase and osteocalcin while RFGD pretreatment had greater effects on osteopontin and bone sialoprotein gene expression.

conclusionsThe results suggest that heat and RFGD pretreatments of the Ti6Al4V surface oxide stimulated osteoblast differentiation through an enhancement of (a) coated fibronectin's bioactivity and (b) the bioactivities of other serum or matrix proteins. The quantitative differences in the effects of the two pretreatments on osteoblast gene marker expression may have arisen from the unique physico-chemical characteristics of each resultant oxide surface. Therefore, engineering the Ti6Al4V surface oxide to become more negatively charged can be used to accelerate osteoblast differentiation through fibronectin-dependent and independent mechanisms.

Indexed as

Cell differentiationDental implantsFibronectinsIntegrin alpha5beta1Osteoblasts

Identifiers

PMID22803011
PMCPMC3395001
OpenAlexW2118114136

What OpenQuestion holds

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LicenceCC BY-NC
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.