Evidence map›Paper›PMID 27912253›Full record

ArticleJournal of neurotrauma2017

Sex and Age Differences in Epinephrine Mechanisms and Outcomes after Brain Injury.

William M Armstead, John Riley, Monica S Vavilala

RetractedAbstract readRetracted Publication
In one paragraph

Article in Journal of neurotrauma, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
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

19 citing papers in PubMed.

  1. Journal of neurotrauma · 2022
    Article
  2. Journal of neurotrauma · 2022
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Sex Differences in Animal Models of Traumatic Brain Injury.Journal of experimental neuroscience · 2019
    Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
4 · The record

Corrections and comments

  • Retraction · 2022-04-29Author Unresponsive · Concerns/Issues about Data · Concerns/Issues about Results and/or Conclusions · · William Armstead has ORI finding of misconduct; see https://ori.hhs.gov/content/case-summary-armstead-william-m
  • Commented on by
  • Retracted
    2022
5 · Who and what money

Authors and funding

3 authors.

William M Armstead1 Department of Anesthesiology and Critical Care, University of Pennsylvania , Philadelphia, Pennsylvania.
John Riley1 Department of Anesthesiology and Critical Care, University of Pennsylvania , Philadelphia, Pennsylvania.
Monica S Vavilala3 Department of Anesthesiology, Pediatrics, and Neurological Surgery, and Harborview Injury Prevention and Research Center, University of Washington , Seattle, Washington.

Funding

Pressor Choice Influences Protection Of Autoregulation in Brain InjuryR01NS090998 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI ARMSTEAD, WILLIAM M · 2015 to 2019
$1.8M
NINDS NIH HHS R01 NS090998
6 · The paper itself

Abstract

Traumatic brain injury (TBI) is the leading cause of injury-related death in children, with boys and children <4 years of age having particularly poor outcomes. Cerebral autoregulation is often impaired after TBI, contributing to poor outcome. Cerebral perfusion pressure can be normalized by use of vasoactive agents. The c-Jun-terminal kinase (JNK) isoform of mitogen activated protein kinase (MAPK) produces hemodynamic impairment after TBI, but less is known about its role in histopathology. We investigated whether epinephrine (EPI), age, and sex dependently protected cerebral autoregulation and limited histopathology after TBI, and sought to determine the role of JNK in that outcome. Lateral fluid percussion injury (FPI) was produced in anesthetized pigs. Pial artery reactivity was measured via a closed cranial window. Phosphorylated JNK MAPK was quantified by enzyme-linked immunosorbent assay (ELISA). Results show that EPI preserves autoregulation, prevents histopathology, and blocks phosphorylated JNK upregulation in newborn males and females and juvenile females but not juvenile males after TBI. These data indicate that EPI preserves cerebral autoregulation and limits histopathology after TBI through blockade of JNK in an age- and sex-dependent manner.

Indexed as

Cerebrovascular CirculationAge FactorsAnimalsAnimals, NewbornBrain Injuries, TraumaticDisease Models, AnimalEnzyme-Linked Immunosorbent AssayEpinephrineFemaleHomeostasisJNK Mitogen-Activated Protein KinasesMaleSex FactorsSwineVasoconstrictor AgentsEpinephrineJNK Mitogen-Activated Protein KinasesVasoconstrictor Agentsagebrain injurycerebral autoregulationhistopathologysexsignal transductionvasopressor

Identifiers

PMID27912253
PMCPMC5397223

What OpenQuestion holds

Textmetadata
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.