Evidence map›Paper›PMID 21144580›Full record

ArticleBiomaterials2011

The significance of pore microarchitecture in a multi-layered elastomeric scaffold for contractile cardiac muscle constructs.

Hyoungshin Park, Benjamin L Larson, Maxime D Guillemette, Saloni R Jain, Casey Hua, George C Engelmayr, Lisa E Freed

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 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
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

25 citing papers in PubMed.

  1. Advances in melt electrowriting for cardiovascular applications.Frontiers in bioengineering and biotechnology · 2024
    Review
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. 3D Bioprinting for Vascularized Tissue Fabrication.Annals of biomedical engineering · 2017
    Review
  9. Article
  10. Article
  11. Strategies and Challenges to Myocardial Replacement Therapy.Stem cells translational medicine · 2016
    Review
  12. Biomaterials in myocardial tissue engineering.Journal of tissue engineering and regenerative medicine · 2016
    Review
  13. [Research process of the preparation of electrostatic spinning of poly-glycerol sebacate and the application in tissue engineering].Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2015
    Article
  14. Scalable units for building cardiac tissue.Advanced materials (Deerfield Beach, Fla.) · 2014
    Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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.

Hyoungshin ParkHarvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Benjamin L Larson
Maxime D Guillemette
Saloni R Jain
Casey Hua
George C Engelmayr
Lisa E Freed

Funding

Rational Design of a Cardiac Tissue Engineering ScaffoldR01HL086521 · NHLBI · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI FREED, LISA E · 2009 to 2010
$1.3M
NHLBI NIH HHS 1-R01-HL086521-01A2NHLBI NIH HHS R01 HL086521
6 · The paper itself

Abstract

Multi-layered poly(glycerol-sebacate) (PGS) scaffolds with controlled pore microarchitectures were fabricated, combined with heart cells, and cultured with perfusion to engineer contractile cardiac muscle constructs. First, one-layered (1L) scaffolds with accordion-like honeycomb shaped pores and elastomeric mechanical properties were fabricated by laser microablation of PGS membranes. Second, two-layered (2L) scaffolds with fully interconnected three dimensional pore networks were fabricated by oxygen plasma treatment of 1L scaffolds followed by stacking with off-set laminae to produce a tightly bonded composite. Third, heart cells were cultured on scaffolds with or without interstitial perfusion for 7 days. The laser-microablated PGS scaffolds exhibited ultimate tensile strength and strain-to-failure higher than normal adult rat left ventricular myocardium, and effective stiffnesses ranging from 220 to 290 kPa. The 7-day constructs contracted in response to electrical field stimulation. Excitation thresholds were unaffected by scaffold scale up from 1L to 2L. The 2L constructs exhibited reduced apoptosis, increased expression of connexin-43 (Cx-43) and matrix metalloprotease-2 (MMP-2) genes, and increased Cx-43 and cardiac troponin-I proteins when cultured with perfusion as compared to static controls. Together, these findings suggest that multi-layered, microfabricated PGS scaffolds may be applicable to myocardial repair applications requiring mechanical support, cell delivery and active implant contractility.

Indexed as

AnimalsAnimals, NewbornCells, CulturedElectrophysiologyMaterials TestingMicroscopy, Electron, ScanningMyocardial ContractionMyocardiumPolymerase Chain ReactionRatsTissue EngineeringTissue Scaffolds

Identifiers

PMID21144580
PMCPMC3030129

What OpenQuestion holds

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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.