Evidence map›Paper›PMID 23571151›Full record

ArticleCells, tissues, organs2013

Delivery of mesenchymal stem cells in chitosan/collagen microbeads for orthopedic tissue repair.

Limin Wang, Rameshwar R Rao, Jan P Stegemann

Open access · bronzeAbstract read
In one paragraph

Article in Cells, tissues, organs, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
6.8field-weighted citation impact, top 3% 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

36 citing papers in PubMed, 83 citations in OpenAlex.

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  10. Injectable Cardiac Cell Microdroplets for Tissue Regeneration.Small (Weinheim an der Bergstrasse, Germany) · 2020
    Article
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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 1 institution in 1 country.

Limin WangDepartment of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
Rameshwar R Rao
Jan P Stegemann
University of Michigan–Ann Arbor · US

Funding

Directed Differentiation of Human Mesenchymal Stem Cells for Bone RepairR01AR053231 · NIAMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI STEGEMANN, JAN P. · 2006 to 2009
$1.3M
NIAMS NIH HHS R01 AR053231NIAMS NIH HHS R01-AR053231
6 · The paper itself

Abstract

Microencapsulation and delivery of stem cells in biomaterials is a promising approach to repairing damaged tissue in a minimally invasive manner. An appropriate biomaterial niche can protect the embedded cells from the challenging environment in the host tissue, while also directing stem cell differentiation toward the desired lineage. In this study, adult human mesenchymal stem cells (MSC) were embedded in hydrogel microbeads consisting of chitosan and type I collagen using an emulsification process. Glyoxal and β-glycerophosphate were used as chemical and physical crosslinkers to initiate copolymerization of the matrix materials. The average size and size distribution of the microbeads could be varied by controlling the emulsification conditions. Spheroidal microbeads ranging in diameter from 82 ± 19 to 290 ± 78 µm were produced. Viability staining showed that MSC survived the encapsulation process (>90% viability) and spread inside the matrix over a period of 9 days in culture. Induced osteogenic differentiation using medium supplements showed that MSC increased gene expression of osterix and osteocalcin over time in culture, and also deposited calcium mineral. Bone sialoprotein and type I collagen gene expression were not affected. Delivery of microbeads through standard needles at practically relevant flow rates did not adversely affect cell viability, and microbeads could also be easily molded into prescribed geometries for delivery. Such protein-based microbeads may have utility in orthopedic tissue regeneration by allowing minimally invasive delivery of progenitor cells in microenvironments that are both protective and instructive.

Indexed as

Mesenchymal Stem Cell TransplantationMicrospheresAdultAdult Stem CellsAnimalsBone and BonesCalciumCattleCell DifferentiationCell ShapeCell SurvivalChitosanCollagenGene Expression RegulationHumansInjectionsCalciumChitosanCollagen

Identifiers

PMID23571151
PMCPMC3711684
OpenAlexW2027246044

What OpenQuestion holds

Textmetadata
LicenceTDM
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.