Evidence map›Paper›PMID 22170399›Full record

ArticleLab on a chip2012

Laser-patterned stem-cell bridges in a cardiac muscle model for on-chip electrical conductivity analyses.

Zhen Ma, Qiuying Liu, Honghai Liu, Huaxiao Yang, Julie X Yun, Carol Eisenberg, Thomas K Borg, Meifeng Xu, Bruce Z Gao

Abstract read
In one paragraph

Article in Lab on a chip, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

18 citing papers in PubMed.

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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

9 authors.

Zhen MaDepartment of Bioengineering, Clemson University, Clemson, South Carolina, USA.
Qiuying Liu
Honghai Liu
Huaxiao Yang
Julie X Yun
Carol Eisenberg
Thomas K Borg
Meifeng Xu
Bruce Z Gao

Funding

UNDERSTANDING AND CONTROLLING TISSUE-SPECIFIC VASCULAR PATTERNINGP20RR021949 · NCRR · CLEMSON UNIVERSITY · PI PETKOV, GEORGI V · 2009 to 2011
$5.2M
Wnt11 signaling in stem cell survival and cardiac regenerationR01HL105176 · NHLBI · UNIVERSITY OF CINCINNATI · PI ASHRAF, MUHAMMAD, JONES, WALTER KEITH · 2010 to 2014
$1.9M
Mobilized Stem Cells in Cardiomyogenesis & AngiogenesisR01HL083236 · NHLBI · UNIVERSITY OF CINCINNATI · PI XU, MEIFENG · 2006 to 2010
$1.8M
Differentiation of Bone-Marrow Stem Cells in a Laser Patterned Myocyte CocultureK25HL088262 · NHLBI · CLEMSON UNIVERSITY · PI GAO, BRUCE Z · 2007 to 2011
$715k
NCRR NIH HHS P20 RR021949NCRR NIH HHS P20RR021949NHLBI NIH HHS 1K25HL088262-04NHLBI NIH HHS K25 HL088262NHLBI NIH HHS R01 HL083236NHLBI NIH HHS R01 HL105176
6 · The paper itself

Abstract

Following myocardial infarction there is an irreversible loss of cardiomyocytes that results in the alteration of electrical propagation in the heart. Restoration of functional electrical properties of the damaged heart muscle is essential to recover from the infarction. While there are a few reports that demonstrate that fibroblasts can form junctions that transmit electrical signals, a potential alternative using the injection of stem cells has emerged as a promising cellular therapy; however, stem-cell electrical conductivity within the cardiac muscle fiber is unknown. In this study, an in vitro cardiac muscle model was established on an MEA-based biochip with multiple cardiomyocytes that mimic cardiac tissue structure. Using a laser beam, stem cells were inserted adjacent to each muscle fiber (cell bridge model) and allowed to form cell-cell contact as determined by the formation of gap junctions. The electrical conductivity of stem cells was assessed and compared with the electrical conductivities of cardiomyocytes and fibroblasts. Results showed that stem cell-myocyte contacts exhibited higher and more stable conduction velocities than myocyte-fibroblast contacts, which indicated that stem cells have higher electrical compatibility with native cardiac muscle fibers than cardiac fibroblasts.

Indexed as

Electric ConductivityAnimalsEquipment DesignFibroblastsGap JunctionsLab-On-A-Chip DevicesMicrofluidic Analytical TechniquesModels, BiologicalMyocardial InfarctionMyocardiumMyocytes, CardiacRatsStem Cells

Identifiers

PMID22170399
PMCPMC3342821

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.