Evidence map›Paper›PMID 25003234›Full record

ArticleJournal of neuropathology and experimental neurology2014

Conditional overexpression of insulin-like growth factor-1 enhances hippocampal neurogenesis and restores immature neuron dendritic processes after traumatic brain injury.

Shaun W Carlson, Sindhu K Madathil, Diana M Sama, Xiang Gao, Jinhui Chen, Kathryn E Saatman

Open access · bronzeAbstract read
In one paragraph

Article in Journal of neuropathology and experimental neurology, 2014. 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
6.0field-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

54 citing papers in PubMed, 92 citations in OpenAlex.

  1. Article
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  6. IGF-1's protective effect on OSAS rats' learning and memory.Sleep & breathing = Schlaf & Atmung · 2024
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  13. Peroxisomal Proliferator-Activated ReceptorFrontiers in pharmacology · 2022
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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

6 authors at 4 institutions in 1 country.

Shaun W CarlsonFrom the Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky (SWC, SKM, DMS, KES); Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, Pennsylvania (SWC); and Stark Neuroscience Research Institute, Department of Neurological Surgery, Indiana University, Indianapolis, Indiana (XG, JC).
Sindhu K Madathil
Diana M Sama
Xiang Gao
Jinhui Chen
Kathryn E Saatman
University of Kentucky · USIndiana University – Purdue University Indianapolis · USNeurological Surgery · USUniversity of Pittsburgh · US

Funding

PEDIATRIC NEUROINTENSIVE CARE AND RESUSCITATION RESEARCHT32HD040686 · NICHD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Robert S B Clark, PATRICK M KOCHANEK · 2000 to 2026
$7.1M
UK Spinal Cord &Brain Injury Research Center Core GrantP30NS051220 · NINDS · UNIVERSITY OF KENTUCKY · PI SULLIVAN, PATRICK G · 2005 to 2015
$6.4M
Neurobiology of CNS Injury and RepairT32NS077889 · NINDS · UNIVERSITY OF KENTUCKY · PI Warren Joseph Alilain, JOHN C GENSEL · 2012 to 2026
$2.4M
Preclinical evaluation of IGF1 therapy for traumatic brain injuryR01NS072302 · NINDS · UNIVERSITY OF KENTUCKY · PI SAATMAN, KATHRYN E · 2011 to 2015
$1.8M
Exercise-enhanced neurogenesis and functional recovery following TBIR21NS072631 · NINDS · INDIANA UNIVERSITY INDIANAPOLIS · PI CHEN, JINHUI · 2011 to 2012
$424k
Role of beta catenin mediated neural stem cell and astrocyte proliferation in TBIF32NS083182 · NINDS · UNIVERSITY OF KENTUCKY · PI SAMA, DIANA M. · 2013 to 2015
$141k
NICHD NIH HHS T32 HD040686NINDS NIH HHS F32 NS083182NINDS NIH HHS P30 NS051220NINDS NIH HHS R01 NS072302NINDS NIH HHS R21 NS072631NINDS NIH HHS T32 NS077889
6 · The paper itself

Abstract

Traumatic brain injury (TBI) is associated with neuronal damage or neuronal death in the hippocampus, a region critical for cognitive function. Immature neurons within the hippocampal neurogenic niche are particularly susceptible to TBI. Therapeutic strategies that protect immature hippocampal neurons or enhance posttraumatic neurogenesis may be advantageous for promoting functional recovery after TBI. Insulin-like growth factor-1 (IGF-1) promotes neurogenesis in the adult brain, but its effects on neurogenesis after TBI are unknown. We used an astrocyte-specific conditional IGF-1-overexpressing mouse model to supplement IGF-1 in regions of neuronal damage and reactive astrocytosis after controlled cortical impact injury. Although early loss of immature neurons was not significantly attenuated, overexpression of IGF-1 resulted in a marked increase in immature neuron density in the subgranular zone at 10 days after injury. This delayed increase seemed to be driven by enhanced neuron differentiation rather than by increased cellular proliferation. In wild-type mice, dendrites of immature neurons exhibited significant decreases in total length and number of bifurcations at 10 days after injury versus neurons in sham-injured mice. In contrast, the morphology of immature neuron dendrites in brain-injured IGF-1-overexpressing mice was equivalent to that in sham controls. These data provide compelling evidence that IGF-1 promotes neurogenesis after TBI.

Indexed as

Analysis of VarianceAnimalsBrain InjuriesBromodeoxyuridineCell ProliferationDendritesDisease Models, AnimalDoublecortin Domain ProteinsGene Expression Regulation, DevelopmentalHippocampusInsulin-Like Growth Factor IMaleMiceMice, TransgenicMicrotubule-Associated ProteinsNerve Tissue ProteinsBromodeoxyuridineDoublecortin Domain ProteinsInsulin-Like Growth Factor IMicrotubule-Associated ProteinsNerve Tissue ProteinsNeuropeptides

Identifiers

PMID25003234
PMCPMC4102886
OpenAlexW1981715740

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.