Evidence map›Paper›PMID 25979196›Full record

ArticleNeurorehabilitation and neural repair2016

Brain-Derived Neurotrophic Factor (BDNF) in Traumatic Brain Injury-Related Mortality: Interrelationships Between Genetics and Acute Systemic and Central Nervous System BDNF Profiles.

Michelle D Failla, Yvette P Conley, Amy K Wagner

Open access · bronzeAbstract read
In one paragraph

Article in Neurorehabilitation and neural repair, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 3 pooled it
6.8field-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

67 citing papers in PubMed, 3 syntheses or guidelines pooled it, 104 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Review
  10. Article
  11. Article
  12. BDNF: New Views of an Old Player in Traumatic Brain Injury.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2024
    Review
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Review
  20. Article

7 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Michelle D FaillaCenter for Neuroscience, University of Pittsburgh, Pittsburgh, PA, USA.
Yvette P ConleyDepartment of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA Health Promotion & Development, School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA Department of Physical Medicine and Rehabilitation, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
Amy K WagnerCenter for Neuroscience, University of Pittsburgh, Pittsburgh, PA, USA Department of Physical Medicine and Rehabilitation, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA wagnerak@upmc.edu.
University of Pittsburgh · US

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
Dopamine Genetic Variants Modulating Recovery After TBIR01HD048162 · NICHD · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WAGNER, AMY K · 2004 to 2008
$1.8M
Genomic Variability and Symptomatology After Traumatic Brain InjuryR01NR013342 · NINR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CONLEY, YVETTE P · 2011 to 2013
$1.2M
Mitochrondrial Genetics of Recovery After Brain InjuryR01NR008424 · NINR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CONLEY, YVETTE P · 2005 to 2008
$1.0M
NCATS NIH HHS UL1 TR000005NICHD NIH HHS R01 HD048162NICHD NIH HHS R01HD048162NINR NIH HHS R01 NR008424NINR NIH HHS R01NR008424NINR NIH HHS R01 NR013342NINR NIH HHS R01NR013342
6 · The paper itself

Abstract

backgroundOlder adults have higher mortality rates after severe traumatic brain injury (TBI) compared to younger adults. Brain-derived neurotrophic factor (BDNF) signaling is altered in aging and is important to TBI given its role in neuronal survival/plasticity and autonomic function. Following experimental TBI, acute BDNF administration has not been efficacious. Clinically, genetic variation in BDNF (reduced signaling alleles: rs6265, Met-carriers; rs7124442, C-carriers) can be protective against acute mortality. Postacutely, these genotypes carry lower mortality risk in older adults and greater mortality risk among younger adults.

objectiveInvestigate BDNF levels in mortality/outcome following severe TBI in the context of age and genetic risk.

methodsCerebrospinal fluid (CSF) and serum BDNF were assessed prospectively during the first week following severe TBI (n = 203) and in controls (n = 10). Age, BDNF genotype, and BDNF levels were assessed as mortality/outcome predictors.

resultsCSF BDNF levels tended to be higher post-TBI (P = .061) versus controls and were associated with time until death (P = .042). In contrast, serum BDNF levels were reduced post-TBI versus controls (P < .0001). Both gene * BDNF serum and gene * age interactions were mortality predictors post-TBI in the same multivariate model. CSF and serum BDNF tended to be negatively correlated post-TBI (P = .07).

conclusionsBDNF levels predicted mortality, in addition to gene * age interactions, suggesting levels capture additional mortality risk. Higher CSF BDNF post-TBI may be detrimental due to injury and age-related increases in pro-apoptotic BDNF target receptors. Negative CSF and serum BDNF correlations post-TBI suggest blood-brain barrier transit alterations. Understanding BDNF signaling in neuronal survival, plasticity, and autonomic function may inform treatment.

Indexed as

AdultBiomarkersBrain-Derived Neurotrophic FactorBrain InjuriesFemaleGlasgow Outcome ScaleHumansMalePolymorphism, Single NucleotideRisk FactorsBDNF protein, humanBiomarkersBrain-Derived Neurotrophic FactoragingBDNFgeneticsmortalityRehabilomicstraumatic brain injury

Identifiers

PMID25979196
PMCPMC4644728
OpenAlexW222739660

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.