Evidence map›Paper›PMID 36719778›Full record

ArticleTissue engineering. Part C, Methods2023

Optimization of Freeform Reversible Embedding of Suspended Hydrogel Microspheres for Substantially Improved Three-Dimensional Bioprinting Capabilities.

Catherine A Wu, Yuanjia Zhu, Akshay Venkatesh, Charles J Stark, Seung Hyun Lee, Y Joseph Woo

Open access · greenAbstract read
In one paragraph

Article in Tissue engineering. Part C, Methods, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

10 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Hydrogels for Cardiac Tissue Regeneration: Current and Future Developments.International journal of molecular sciences · 2025
    Review
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Review
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 1 institution in 1 country.

Catherine A WuDepartment of Cardiothoracic Surgery and Stanford University, Stanford, California, USA.
Yuanjia ZhuDepartment of Cardiothoracic Surgery and Stanford University, Stanford, California, USA.ORCID 0000-0002-2506-492X
Akshay VenkateshDepartment of Cardiothoracic Surgery and Stanford University, Stanford, California, USA.
Charles J StarkDepartment of Cardiothoracic Surgery and Stanford University, Stanford, California, USA.
Seung Hyun LeeDepartment of Cardiothoracic Surgery and Stanford University, Stanford, California, USA.
Y Joseph WooDepartment of Cardiothoracic Surgery and Stanford University, Stanford, California, USA.
Stanford University · US

Funding

ANGIOGENIC TISSUE ENGINEERING TO LIMIT POST-INFARCTION VENTRICULAR REMODELINGR01HL089315 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI WOO, Y JOSEPH · 2008 to 2023
$6.4M
NHLBI NIH HHS R01 HL089315
6 · The paper itself

Abstract

Three-dimensional (3D) bioprinting demonstrates technology that is capable of producing structures comparable to native tissues in the human body. The freeform reversible embedding of suspended hydrogels (FRESH) technique involves hydrogel-based bio-inks printed within a thermo-reversible support bath to provide mechanical strength to the printed construct. Smaller and more uniform microsphere sizes of FRESH were reported to aid in enhancing printing resolution and construct accuracy. Therefore, we sought to optimize the FRESH generation protocol, particularly by varying stir speed and stir duration, in hopes to further improve microsphere size and uniformity. We observed optimal conditions at a stir speed of 600 rpm and stir duration for 20 h that generated the smallest microspheres with the best uniformity. Comparison of using the optimized FRESH to the commercial FRESH LifeSupport to bioprint single filament and geometrical constructs revealed reduced single filament diameters and higher angular precision in the optimized FRESH bio-printed constructs compared with those printed in the commercial FRESH. Overall, our refinement of the FRESH manufacturing protocol represents an important step toward enhancing 3D bioprinting resolution and construct fidelity. Improving such technologies allows for the fabrication of highly accurate constructs with anatomical properties similar to native counterparts. Such work has significant implications in the field of tissue engineering for producing accurate human organ model systems. Impact statement Freeform reversible embedding of suspended hydrogels (FRESH) is a method of sacrificial three-dimensional (3D) bioprinting that offers support to reinforce bio-ink extrusion during printing. During FRESH generation, the stir speed and stir duration of the mixture can significantly impact FRESH microsphere characteristics. In this study, we optimized FRESH microspheres to significantly improve resolution and accuracy in bioprinting. This advancement in FRESH-based 3D bioprinting technologies allows for the fabrication of highly accurate constructs with anatomical properties similar to native counterparts and has significant implications in the field of tissue engineering and translational medicine.

Indexed as

BioprintingHydrogelsHumansMicrospheresPrinting, Three-DimensionalTissue EngineeringTissue ScaffoldsHydrogelsfreeform reversible embedding of suspended hydrogelFRESHmicrosphereoptimization

Identifiers

PMID36719778
PMCPMC10024587
OpenAlexW4318669281

What Socratic holds

Textmetadata
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 Socratic graph.