Evidence map›Paper›PMID 31645588›Full record

ArticleScientific reports2019

Cardiac Pacemaker Cells Generate Cardiomyocytes from Fibroblasts in Long-Term Cultures.

Shigeki Kiuchi, Akino Usami, Tae Shimoyama, Fuminori Otsuka, Sachiko Yamaguchi, Tomonori Nakamura, Shigeto Suzuki, Kageyoshi Ono

Abstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Review
  5. 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

8 authors.

Shigeki KiuchiLaboratory of Molecular Physiology and Pharmacology, Faculty of Pharma-Sciences, Teikyo University, Itabashi-Ku, Tokyo, 173-8605, Japan.
Akino UsamiLaboratory of Molecular Physiology and Pharmacology, Faculty of Pharma-Sciences, Teikyo University, Itabashi-Ku, Tokyo, 173-8605, Japan.
Tae ShimoyamaLaboratory of Molecular Environmental Health, Faculty of Pharma-Sciences, Teikyo University, Itabashi-Ku, Tokyo, 173-8605, Japan.
Fuminori OtsukaLaboratory of Molecular Environmental Health, Faculty of Pharma-Sciences, Teikyo University, Itabashi-Ku, Tokyo, 173-8605, Japan.
Sachiko YamaguchiDepartment of Molecular Pharmacology and Pharmacotherapeutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chuo-ku, Chiba, 260-8675, Japan.
Tomonori NakamuraDepartment of Molecular Pharmacology and Pharmacotherapeutics, Graduate School of Pharmaceutical Sciences, Chiba University, Chuo-ku, Chiba, 260-8675, Japan.
Shigeto SuzukiLaboratory of Molecular Physiology and Pharmacology, Faculty of Pharma-Sciences, Teikyo University, Itabashi-Ku, Tokyo, 173-8605, Japan.
Kageyoshi OnoLaboratory of Molecular Physiology and Pharmacology, Faculty of Pharma-Sciences, Teikyo University, Itabashi-Ku, Tokyo, 173-8605, Japan. ono_k@pharm.teikyo-u.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Because cardiomyocyte generation is limited, the turnover of cardiomyocytes in adult heart tissues is much debated. We report here that cardiac pacemaker cells can generate cardiomyocytes from fibroblasts in vitro. Sinoatrial node cells (SANCs) were isolated from adult guinea pig hearts and were cultured at relatively low cell densities. Within a week, a number of fibroblast-like cells were observed to gather around SANCs, and these formed spontaneously beating clusters with cardiomyocyte structures. The clusters expressed genes and proteins that are characteristic of atrial cardiomyocytes. Pharmacological blocking of pacemaker currents inhibited generation of action potentials, and the spontaneous beating were ceased by physically destroying a few central cells. Inhibition of beating during culture also hampered the cluster formation. Moreover, purified guinea pig cardiac fibroblasts (GCFs) expressed cardiac-specific proteins in co-culture with SANCs or in SANC-preconditioned culture medium under electrical stimulation. These results indicate that SANCs can generate cardiomyocytes from cardiac fibroblasts through the influence of humoral factor(s) and electrophysiological activities followed by intracellular Ca

Indexed as

Biological ClocksAnimalsCalciumCell AggregationCell DifferentiationCells, CulturedElectrophysiological PhenomenaFibroblastsGuinea PigsMaleMyocardiumMyocytes, CardiacPhenotypeSinoatrial NodeTime FactorsTroponin TCalciumTroponin T

Identifiers

PMID31645588
PMCPMC6811548

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Registered trials

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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.