Evidence map›Paper›PMID 19015375›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2009

Electrical excitability of early neurons in the human cerebral cortex during the second trimester of gestation.

Anna R Moore, Radmila Filipovic, Zhicheng Mo, Matthew N Rasband, Nada Zecevic, Srdjan D Antic

Open access · bronzeAbstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 1 pooled it
8.0field-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

64 citing papers in PubMed, 1 synthesis or guideline pooled it, 106 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Functional maturation of human iPSC-derived pyramidal neuronsFrontiers in cellular neuroscience · 2023
    Article
  12. Article
  13. Early role for a NaProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  14. Article
  15. Article
  16. Autism Spectrum Disorders: Multiple Routes to, and Multiple Consequences of, Abnormal Synaptic Function and Connectivity.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Article

4 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Anna R MooreDepartment of Neuroscience, University of Connecticut Health Center, Farmington, CT 06030, USA.
Radmila Filipovic
Zhicheng Mo
Matthew N Rasband
Nada Zecevic
Srdjan D Antic
UConn Health · USBaylor College of Medicine · US

Funding

Development of the Cerebral Cortex in MammalsR01NS041489 · NINDS · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI ZECEVIC, NADA R · 2001 to 2013
$3.8M
Neuroscience Training at University of Connecticut Health CenterT32NS041224 · NINDS · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI EIPPER, ELIZABETH ANNE · 2001 to 2010
$1.3M
NINDS NIH HHS 5T32NS041224NINDS NIH HHS R01 NS041489
6 · The paper itself

Abstract

Information about development of the human cerebral cortex (proliferation, migration, and differentiation of neurons) is largely based on postmortem histology. Physiological properties of developing human cortical neurons are difficult to access experimentally and therefore remain largely unexplored. Animal studies have shown that information about the arousal of electrical activity in individual cells within fundamental cortical zones (subventricular zone [SVZ], intermediate zone, subplate [SP], and cortical plate [CP]) is necessary for understanding normal brain development. Here we ask where, in what cortical zone, and when, in what gestational week (gw), human neurons acquire the ability to generate nerve impulses (action potentials [APs]). We performed electrical recordings from individual cells in acute brain slices harvested postmortem from the human fetal cerebral cortex (16-22 gw). Tetrodotoxin-sensitive Na(+) current occurs more frequently among CP cells and with significantly greater peak amplitudes than in SVZ. As early as 16 gw, a relatively small population of CP neurons (27%) was able to generate sodium APs upon direct current injection. Neurons located in the SP exhibited the highest level of cellular differentiation, as judged by their ability to fire repetitive APs. At 19 gw, a fraction of human CP and SP neurons possess beta IV spectrin-positive axon initial segments populated with voltage-gated sodium channels (PanNav). These results yield the first physiological characterization of developing human fetal cortical neurons with preserved morphologies in intact surrounding brain tissue.

Indexed as

Action PotentialsAxonsCerebral CortexElectrophysiologyFemaleFetusHumansImmunohistochemistryMembrane PotentialsNeuronsPatch-Clamp TechniquesPregnancyPregnancy Trimester, Second

Identifiers

PMID19015375
PMCPMC2705693
OpenAlexW2105973849

What OpenQuestion 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 OpenQuestion graph.