Evidence map›Paper›PMID 28489272›Full record

ArticleDepression and anxiety2017

Fear learning alterations after traumatic brain injury and their role in development of posttraumatic stress symptoms.

Daniel E Glenn, Dean T Acheson, Mark A Geyer, Caroline M Nievergelt, Dewleen G Baker, Victoria B Risbrough, MRS-II Team

Open access · greenAbstract read
In one paragraph

Article in Depression and anxiety, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 5% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

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  15. Impact of ADCYAP1R1 genotype on longitudinal fear conditioning in children: interaction with trauma and sex.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
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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

7 authors at 2 institutions in 2 countries.

Daniel E GlennCenter of Excellence for Stress and Mental Health, San Diego Veterans Affairs Health Services, CA, USA.ORCID 0000-0002-6416-0340
Dean T AchesonCenter of Excellence for Stress and Mental Health, San Diego Veterans Affairs Health Services, CA, USA.
Mark A GeyerDepartment of Psychiatry, University of California San Diego, CA, USA.
Caroline M NievergeltCenter of Excellence for Stress and Mental Health, San Diego Veterans Affairs Health Services, CA, USA.
Dewleen G BakerCenter of Excellence for Stress and Mental Health, San Diego Veterans Affairs Health Services, CA, USA.
Victoria B RisbroughCenter of Excellence for Stress and Mental Health, San Diego Veterans Affairs Health Services, CA, USA.
MRS-II TeamCenter of Excellence for Stress and Mental Health, San Diego Veterans Affairs Health Services, CA, USA.
Veterans Health Administration · USUniversity of California San Diego · US

Funding

Role of COMTval158met in PTSD risk and treatment responseI01BX002558 · VA · VA SAN DIEGO HEALTHCARE SYSTEM · PI RISBROUGH, VICTORIA B · 2015 to 2018
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BLRD VA I01 BX002558
6 · The paper itself

Abstract

backgroundIt is unknown how traumatic brain injury (TBI) increases risk for posttraumatic stress disorder (PTSD). One potential mechanism is via alteration of fear-learning processes that could affect responses to trauma memories and cues. We utilized a prospective, longitudinal design to determine if TBI is associated with altered fear learning and extinction, and if fear processing mediates effects of TBI on PTSD symptom change.

methodsEight hundred fifty two active-duty Marines and Navy Corpsmen were assessed before and after deployment. Assessments included TBI history, PTSD symptoms, combat trauma and deployment stress, and a fear-potentiated startle task of fear acquisition and extinction. Startle response and self-reported expectancy and anxiety served as measures of fear conditioning, and PTSD symptoms were measured with the Clinician-Administered PTSD Scale.

resultsIndividuals endorsing "multiple hit" exposure (both deployment TBI and a prior TBI) showed the strongest fear acquisition and highest fear expression compared to groups without multiple hits. Extinction did not differ across groups. Endorsing a deployment TBI was associated with higher anxiety to the fear cue compared to those without deployment TBI. The association of deployment TBI with increased postdeployment PTSD symptoms was mediated by postdeployment fear expression when recent prior-TBI exposure was included as a moderator. TBI associations with increased response to threat cues and PTSD symptoms remained when controlling for deployment trauma and postdeployment PTSD diagnosis.

conclusionsDeployment TBI, and multiple-hit TBI in particular, are associated with increases in conditioned fear learning and expression that may contribute to risk for developing PTSD symptoms.

Indexed as

AdultBrain Injuries, TraumaticFearHumansLearningMaleMilitary PersonnelProspective StudiesStress Disorders, Post-TraumaticYoung Adultbiological markersposttraumatic stress disorderstartletraumatraumatic brain injury

Identifiers

PMID28489272
PMCPMC12128915
OpenAlexW2612251171

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.