Evidence map›Paper›PMID 26478908›Full record

ArticleeNeuro2015

Functional Integration of Adult-Born Hippocampal Neurons after Traumatic Brain Injury(1,2,3).

Laura E Villasana, Kristine N Kim, Gary L Westbrook, Eric Schnell

Abstract read
In one paragraph

Article in eNeuro, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing 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

54 citing papers in PubMed.

  1. Article
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  11. Article
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  14. Review
  15. Article
  16. Adult-Born Granule Cells Contribute to Dentate Gyrus Circuit Reorganization after Traumatic Brain Injury.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  17. Article
  18. Adult Born Dentate Granule Cell Mediated Upregulation of Feedback Inhibition in a Mouse Model of Traumatic Brain Injury.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  19. Review
  20. Flexibility ofFrontiers in cellular neuroscience · 2022
    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

4 authors.

Laura E VillasanaDepartment of Anesthesiology and Perioperative Medicine, Oregon Health & Science University , Portland, Oregon 97239.
Kristine N KimVA Portland Health Care System , Portland, Oregon 97239.
Gary L WestbrookThe Vollum Institute, Oregon Health & Science University , Portland, Oregon 97239.
Eric SchnellDepartment of Anesthesiology and Perioperative Medicine, Oregon Health & Science University , Portland, Oregon 97239 ; VA Portland Health Care System , Portland, Oregon 97239.

Funding

Ultrastructure and Single Particle Microscopy CoreP30NS061800 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI AICHER, SUE A · 2009 to 2020
$6.6M
SYNAPTIC TRANSMISSION IN THE CNSR01NS026494 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI WESTBROOK, GARY L · 1993 to 2009
$3.0M
Transcriptional analysis of adult newborn hippocampal neuronsR01NS080979 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI GOODMAN, RICHARD H. · 2013 to 2016
$1.3M
NINDS NIH HHS P30 NS061800NINDS NIH HHS R01 NS026494NINDS NIH HHS R01 NS080979
6 · The paper itself

Abstract

Traumatic brain injury (TBI) increases hippocampal neurogenesis, which may contribute to cognitive recovery after injury. However, it is unknown whether TBI-induced adult-born neurons mature normally and functionally integrate into the hippocampal network. We assessed the generation, morphology, and synaptic integration of new hippocampal neurons after a controlled cortical impact (CCI) injury model of TBI. To label TBI-induced newborn neurons, we used 2-month-old POMC-EGFP mice, which transiently and specifically express EGFP in immature hippocampal neurons, and doublecortin-CreER(T2) transgenic mice crossed with Rosa26-CAG-tdTomato reporter mice, to permanently pulse-label a cohort of adult-born hippocampal neurons. TBI increased the generation, outward migration, and dendritic complexity of neurons born during post-traumatic neurogenesis. Cells born after TBI had profound alterations in their dendritic structure, with increased dendritic branching proximal to the soma and widely splayed dendritic branches. These changes were apparent during early dendritic outgrowth and persisted as these cells matured. Whole-cell recordings from neurons generated during post-traumatic neurogenesis demonstrate that they are excitable and functionally integrate into the hippocampal circuit. However, despite their dramatic morphologic abnormalities, we found no differences in the rate of their electrophysiological maturation, or their overall degree of synaptic integration when compared to age-matched adult-born cells from sham mice. Our results suggest that cells born after TBI participate in information processing, and receive an apparently normal balance of excitatory and inhibitory inputs. However, TBI-induced changes in their anatomic localization and dendritic projection patterns could result in maladaptive network properties.

Indexed as

adult neurogenesisfunctional integrationhippocampusmaturationsynaptic integrationtraumatic brain injury

Identifiers

PMID26478908
PMCPMC4603252

What OpenQuestion holds

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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.