Evidence map›Paper›PMID 35650420›Full record

ArticleScientific reports2022

Human cerebral spheroids undergo 4-aminopyridine-induced, activity associated changes in cellular composition and microrna expression.

Thomas Parmentier, Fiona M K James, Elizabeth Hewitson, Craig Bailey, Nicholas Werry, Steven D Sheridan, Roy H Perlis, Melissa L Perreault, Luis Gaitero, Jasmin Lalonde and 1 more

Abstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. 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

11 authors.

Thomas ParmentierDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Fiona M K JamesDepartment of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Elizabeth HewitsonDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Craig BaileyDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Nicholas WerryDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Steven D SheridanCenter for Quantitative Health, Center for Genomic Medicine and Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA.
Roy H PerlisCenter for Quantitative Health, Center for Genomic Medicine and Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA.
Melissa L PerreaultDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Luis GaiteroDepartment of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
Jasmin LalondeDepartment of Molecular and Cellular Biology, College of Biological Science, University of Guelph, Guelph, ON, Canada.
Jonathan LaMarreDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada. jlamarre@uoguelph.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Activity-induced neurogenesis has been extensively studied in rodents but the lack of ante mortem accessibility to human brain at the cellular and molecular levels limits studies of the process in humans. Using cerebral spheroids derived from human induced pluripotent stem cells (iPSCs), we investigated the effects of 4-aminopyridine (4AP) on neuronal activity and associated neurogenesis. Our studies demonstrate that 4AP increases neuronal activity in 3-month-old cerebral spheroids while increasing numbers of new neurons and decreasing the population of new glial cells. We also observed a significant decrease in the expression of miR-135a, which has previously been shown to be decreased in exercise-induced neurogenesis. Predicted targets of miR-135a include key participants in the SMAD2/3 and BDNF pathways. Together, our results suggest that iPSC-derived cerebral spheroids are an attractive model to study several aspects of activity-induced neurogenesis.

Indexed as

Induced Pluripotent Stem CellsMicroRNAsNeural Stem Cells4-AminopyridineHumansNeurogenesis4-AminopyridineMicroRNAs

Identifiers

PMID35650420
PMCPMC9160269

What OpenQuestion holds

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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.