Evidence map›Paper›PMID 22527999›Full record

ArticleMetabolic brain disease2012

Developmental traumatic brain injury decreased brain derived neurotrophic factor expression late after injury.

Michelle Elena Schober, Benjamin Block, Daniela F Requena, Merica A Hale, Robert H Lane

Abstract read
In one paragraph

Article in Metabolic brain disease, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

17 citing papers in PubMed, 36 citations in OpenAlex.

  1. Review
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  10. BDNF, Brain, and Regeneration: Insights from Zebrafish.International journal of molecular sciences · 2018
    Review
  11. Craniectomy Effects on Resting State Functional Connectivity and Cognitive Performance in Immature Rats.Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference · 2018
    Article
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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

5 authors at 1 institution in 1 country.

Michelle Elena SchoberUniversity of Utah, Salt Lake City, USA. michelle.schober@hsc.utah.edu
Benjamin Block
Daniela F Requena
Merica A Hale
Robert H Lane
University of Utah · US

Funding

Genetic /Developmental Mechanisms of Pediatric DiseasesK12HD001410 · NICHD · UNIVERSITY OF UTAH · PI CLARK, EDWARD BOWERSOX · 2003 to 2012
$4.3M
NICHD NIH HHS K12 HD001410
6 · The paper itself

Abstract

Pediatric traumatic brain injury (TBI) is a major cause of acquired cognitive dysfunction in children. Hippocampal Brain Derived Neurotrophic Factor (BDNF) is important for normal cognition. Little is known about the effects of TBI on BDNF levels in the developing hippocampus. We used controlled cortical impact (CCI) in the 17 day old rat pup to test the hypothesis that CCI would first increase rat hippocampal BDNF mRNA/protein levels relative to SHAM and Naïve rats by post injury day (PID) 2 and then decrease BDNF mRNA/protein by PID14. Relative to SHAM, CCI did not change BDNF mRNA/protein levels in the injured hippocampus in the first 2 days after injury but did decrease BDNF protein at PID14. Surprisingly, BDNF mRNA decreased at PID 1, 3, 7 and 14, and BDNF protein decreased at PID 2, in SHAM and CCI hippocampi relative to Naïve. In conclusion, TBI decreased BDNF protein in the injured rat pup hippocampus 14 days after injury. BDNF mRNA levels decreased in both CCI and SHAM hippocampi relative to Naïve, suggesting that certain aspects of the experimental paradigm (such as craniotomy, anesthesia, and/or maternal separation) may decrease the expression of BDNF in the developing hippocampus. While BDNF is important for normal cognition, no inferences can be made regarding the cognitive impact of any of these factors. Such findings, however, suggest that meticulous attention to the experimental paradigm, and possible inclusion of a Naïve group, is warranted in studies of BDNF expression in the developing brain after TBI.

Indexed as

AnimalsBrainBrain-Derived Neurotrophic FactorBrain InjuriesHippocampusMaleNerve Tissue ProteinsRatsRats, Sprague-DawleyReal-Time Polymerase Chain ReactionRNARNA, MessengerStereotaxic TechniquesBrain-Derived Neurotrophic FactorNerve Tissue ProteinsRNARNA, Messenger

Identifiers

PMID22527999
PMCPMC3383795
OpenAlexW2096170120

What OpenQuestion holds

Textmetadata
LicenceTDM
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.