Evidence map›Paper›PMID 25344352›Full record

ArticleAnnals of biomedical engineering2015

Head rotational acceleration characteristics influence behavioral and diffusion tensor imaging outcomes following concussion.

Brian D Stemper, Alok S Shah, Frank A Pintar, Michael McCrea, Shekar N Kurpad, Aleksandra Glavaski-Joksimovic, Christopher Olsen, Matthew D Budde

Open access · greenAbstract read
In one paragraph

Article in Annals of biomedical engineering, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 7% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
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  8. A multiscale tissue assessment in a rat model of mild traumatic brain injury.Journal of neuropathology and experimental neurology · 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

8 authors at 2 institutions in 1 country.

Brian D StemperDepartment of Neurosurgery, Medical College of Wisconsin, Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, WI, USA, bstemper@mcw.edu.
Alok S Shah
Frank A Pintar
Michael McCrea
Shekar N Kurpad
Aleksandra Glavaski-Joksimovic
Christopher Olsen
Matthew D Budde
Milwaukee VA Medical Center · USMedical College of Wisconsin · US

Funding

Mild TBI: Effects on addiction-related phenotypes and mesocorticolimbic functionR21DA039276 · NIDA · MEDICAL COLLEGE OF WISCONSIN · PI BUDDE, MATTHEW D, OLSEN, CHRISTOPHER M · 2015 to 2017
$442k
Blast and Blunt Mechanisms for Mild-TBI Induce Differing OutcomesI01RX000380 · VA · CLEMENT J. ZABLOCKI VA MEDICAL CENTER · PI PINTAR, FRANK A · 2012 to 2014
–
NIDA NIH HHS R21 DA039276RRD VA I01 RX000380
6 · The paper itself

Abstract

A majority of traumatic brain injuries (TBI) in motor vehicle crashes and sporting environments are mild and caused by high-rate acceleration of the head. For injuries caused by rotational acceleration, both magnitude and duration of the acceleration pulse were shown to influence injury outcomes. This study incorporated a unique rodent model of rotational acceleration-induced mild TBI (mTBI) to quantify independent effects of magnitude and duration on behavioral and neuroimaging outcomes. Ninety-two Sprague-Dawley rats were exposed to head rotational acceleration at peak magnitudes of 214 or 350 krad/s(2) and acceleration pulse durations of 1.6 or 3.4 ms in a full factorial design. Rats underwent a series of behavioral tests including the Composite Neuroscore (CN), Elevated Plus Maze (EPM), and Morris Water Maze (MWM). Ex vivo diffusion tensor imaging (DTI) of the fixed brains was conducted to assess the effects of rotational injury on brain microstructure as revealed by the parameter fractional anisotropy (FA). While the injury did not cause significant locomotor or cognitive deficits measured with the CN and MWM, respectively, a main effect of duration was consistently observed for the EPM. Increased duration caused significantly greater activity and exploratory behaviors measured as open arm time and number of arm changes. DTI demonstrated significant effects of both magnitude and duration, with the FA of the amygdala related to both the magnitude and duration. Increased duration also caused FA changes at the interface of gray and white matter. Collectively, the findings demonstrate that the consequences of rotational acceleration mTBI were more closely associated with duration of the rotational acceleration impulse, which is often neglected as an independent factor, and highlight the need for animal models of TBI with strong biomechanical foundations to associate behavioral outcomes with brain microstructure.

Indexed as

AccelerationAnimalsBehavior, AnimalBrain ConcussionDiffusion Tensor ImagingFemaleHeadMagnetic Resonance ImagingMaze LearningMotor ActivityRats, Sprague-DawleyRotation

Identifiers

PMID25344352
PMCPMC4654450
OpenAlexW1990022633

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.