Evidence map›Paper›PMID 33877363›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2021

Intravital Imaging of Neocortical Heterotopia Reveals Aberrant Axonal Pathfinding and Myelination around Ectopic Neurons.

Alice M Li, Robert A Hill, Jaime Grutzendler

Open access · hybridAbstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.6field-weighted citation impact, top 40% 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

6 citing papers in PubMed, 8 citations in OpenAlex.

  1. bioRxiv : the preprint server for biology · 2026
    Article
  2. Review
  3. Axonal pathfinding during the development of the nervous system.Annals of the Child Neurology Society · 2023
    Review
  4. Article
  5. Animal models of developmental dyslexia.Frontiers in neuroscience · 2022
    Review
  6. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 3 institutions in 1 country.

Alice M LiInterdepartmental Neuroscience Program, Yale School of Medicine, New Haven, CT 06510, USA.
Robert A HillDepartment of Neurology, Yale School of Medicine, New Haven, CT 06510, USA.
Jaime GrutzendlerInterdepartmental Neuroscience Program, Yale School of Medicine, New Haven, CT 06510, USA.
Brigham and Women's Hospital · USDartmouth College · USYale University · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007205 · NIGMS · YALE UNIVERSITY · PI KAZMIERCZAK, BARBARA I · 1985 to 2019
$42.9M
Understanding the role of RNA-binding protein mutations in cancerP20GM113132 · NIGMS · DARTMOUTH COLLEGE · PI MADDEN, DEAN R · 2016 to 2025
$25.9M
NEUROBIOLOGY OF CORTICAL SYSTEMST32NS007224 · NINDS · YALE UNIVERSITY · PI CARDIN, JESSICA A · 1985 to 2025
$4.6M
Postnatal Development of the Neuro-Glio-Vascular UnitR01NS089734 · NINDS · YALE UNIVERSITY · PI GRUTZENDLER, JAIME · 2014 to 2018
$1.8M
Uncovering mechanisms of myelin formation and regeneration in the live brainR00NS099469 · NINDS · DARTMOUTH COLLEGE · PI HILL, ROBERT · 2018 to 2020
$746k
In vivo cellular imaging of myelin plasticity and regeneration in cortical gray mR21NS087511 · NINDS · YALE UNIVERSITY · PI GRUTZENDLER, JAIME · 2014 to 2015
$458k
The role of astrocytes in myelin maintenance and regenerationR21NS088411 · NINDS · YALE UNIVERSITY · PI GRUTZENDLER, JAIME · 2014 to 2015
$458k
Donors Cure FoundationNational Multiple Sclerosis Society #RR-1602-07686NIGMS NIH HHS P20 GM113132NIGMS NIH HHS T32 GM007205NINDS NIH HHS R00 NS099469NINDS NIH HHS R01 NS089734NINDS NIH HHS R21 NS087511NINDS NIH HHS R21 NS088411NINDS NIH HHS T32 NS007224
6 · The paper itself

Abstract

Neocortical heterotopia consist of ectopic neuronal clusters that are frequently found in individuals with cognitive disability and epilepsy. However, their pathogenesis remains poorly understood due in part to a lack of tractable animal models. We have developed an inducible model of focal cortical heterotopia that enables their precise spatiotemporal control and high-resolution optical imaging in live mice. Here, we report that heterotopia are associated with striking patterns of circumferentially projecting axons and increased myelination around neuronal clusters. Despite their aberrant axonal patterns, in vivo calcium imaging revealed that heterotopic neurons remain functionally connected to other brain regions, highlighting their potential to influence global neural networks. These aberrant patterns only form when heterotopia are induced during a critical embryonic temporal window, but not in early postnatal development. Our model provides a new way to investigate heterotopia formation in vivo and reveals features suggesting the existence of developmentally modulated, neuron-derived axon guidance and myelination factors.

Indexed as

AnimalsAxon GuidanceElectroporationFemaleMaleMiceNeocortexNerve Fibers, MyelinatedNeuronsPregnancyaxon pathfindingcortical developmentcortical malformationheterotopiamyelination

Identifiers

PMID33877363
PMCPMC8328209
OpenAlexW3154937199

What OpenQuestion holds

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LicenceCC BY
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.