Evidence map›Paper›PMID 21396709›Full record

ArticleBiomaterials2011

The influence of stereolithographic scaffold architecture and composition on osteogenic signal expression with rat bone marrow stromal cells.

Kyobum Kim, David Dean, Jonathan Wallace, Rob Breithaupt, Antonios G Mikos, John P Fisher

Abstract read
In one paragraph

Article in Biomaterials, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
9.0field-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

40 citing papers in PubMed, 148 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

6 authors at 4 institutions in 1 country.

Kyobum KimDepartment of Chemical and Biomolecular Engineering, University of Maryland, 3238 Jeong H. Kim Engineering Building, College Park, MD 20742, United States.
David Dean
Jonathan Wallace
Rob Breithaupt
Antonios G Mikos
John P Fisher
University of Maryland, College Park · USCase Western Reserve University · USNeurological Surgery · USRice University · US

Funding

STRENGTH AND RESORPTION OF BIODEGRADABLE SKULL IMPLANTSR01DE013740 · NIDCR · CASE WESTERN RESERVE UNIVERSITY · PI DEAN, DAVID · 2000 to 2011
$4.6M
NIDCR NIH HHS R01 DE013740NIDCR NIH HHS R01-DE013740
6 · The paper itself

Abstract

Scaffold design parameters, especially physical construction factors such as mechanical stiffness of substrate materials, pore size of 3D porous scaffolds, and channel geometry, are known to influence the osteogenic signal expression and subsequent differentiation of a transplanted cell population. In this study of photocrosslinked poly(propylene fumarate) (PPF) and diethyl fumarate (DEF) scaffolds, the effect of DEF incorporation ratio and pore size on the osteogenic signal expression of rat bone marrow stromal cells (BMSCs) was investigated. Results demonstrated that DEF concentrations and pore sizes that led to increased scaffold mechanical stiffness also upregulated osteogenic signal expression, including bone morphogenic protein-2 (BMP-2), fibroblast growth factors-2 (FGF-2), transforming growth factor-β1 (TGF-β1), vascular endothelial growth factor (VEGF), and Runx2 transcriptional factor. Similar scaffold fabrication parameters supported rapid BMSC osteoblastic differentiation, as demonstrated by increased alkaline phosphatase (ALP) and osteocalcin expression. When scaffolds with random architecture, fabricated by porogen leaching, were compared to those with controlled architecture, fabricated by stereolithography (SLA), results showed that SLA scaffolds with the highly permeable and porous channels also have significantly higher expression of FGF-2, TGF-β1, and VEGF. Subsequent ALP expression and osteopontin secretion were also significantly increased in SLA scaffolds. Based upon these results, we conclude that scaffold properties provided by additive manufacturing techniques such as SLA fabrication, particularly increased mechanical stiffness and high permeability, may stimulate dramatic BMSC responses that promote rapid bone tissue regeneration.

Indexed as

OsteogenesisAnimalsBone Marrow CellsCells, CulturedFumaratesMalePolypropylenesPorosityRatsRats, WistarStromal CellsTissue Scaffoldsdiethyl fumarateFumaratespoly(propylene fumarate)Polypropylenes

Identifiers

PMID21396709
PMCPMC3075725
OpenAlexW2044203477

What OpenQuestion holds

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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.