Evidence map›Paper›PMID 33831399›Full record

ArticleExperimental neurology2021

Differential neuropathology and functional outcome after equivalent traumatic brain injury in aged versus young adult mice.

Mecca B A R Islam, Booker T Davis, Mary J Kando, Qinwen Mao, Daniele Procissi, Craig Weiss, Steven J Schwulst

Open access · greenAbstract readComparative Study
In one paragraph

Article in Experimental neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.9field-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

19 citing papers in PubMed, 31 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
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 1 institution in 1 country.

Mecca B A R IslamDepartment of Surgery, Division of Trauma and Critical Care, Northwestern University, Chicago, IL, USA.
Booker T DavisDepartment of Surgery, Division of Trauma and Critical Care, Northwestern University, Chicago, IL, USA. Electronic address: booker.iv@northwestern.edu.
Mary J KandoDepartment of Physiology, Northwestern University Feinberg School of Medicine, Chicago, USA.
Qinwen MaoDepartment of Pathology, Northwestern University Feinberg School of Medicine, Chicago, USA; Mesulam Center for Cognitive Neurology and Alzheimer's Disease, Northwestern University Feinberg School of Medicine, Chicago, USA.
Daniele ProcissiDepartment of Radiology, Northwestern University Feinberg School of Medicine, Chicago, USA; Center for Translational Pain Research Northwestern University Feinberg School of Medicine, Chicago, USA.
Craig WeissDepartment of Physiology, Northwestern University Feinberg School of Medicine, Chicago, USA.
Steven J SchwulstDepartment of Surgery, Division of Trauma and Critical Care, Northwestern University, Chicago, IL, USA.
Northwestern University · US

Funding

The role of monocyte and microglia interaction in the evolution of traumatic brain injury-induced neurodegenerationR01GM130662 · NIGMS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI SCHWULST, STEVEN J · 2019 to 2023
$2.8M
NIGMS NIH HHS R01 GM130662
6 · The paper itself

Abstract

The CDC estimate that nearly 3 million Americans sustain a traumatic brain injury (TBI) each year. Even when medical comorbidities are accounted for, age is an independent risk factor for poor outcome after TBI. Nonetheless, few studies have examined the pathophysiology of age-linked biologic outcomes in TBI. We hypothesized that aged mice would demonstrate more severe neuropathology and greater functional deficits as compared to young adult mice after equivalent traumatic brain injuries. Young adult (14-week-old) and aged (80-week-old) C57BL/6 male mice underwent an open-head controlled cortical impact to induce TBI or a sham injury. At 30-days post-injury groups underwent behavioral phenotyping, magnetic resonance imaging, and histologic analyses. Contrary to our hypothesis, young adult TBI mice exhibited more severe neuropathology and greater loss of white matter connectivity as compared to aged mice after TBI. These findings correlated to differential functional outcomes in anxiety response, learning, and memory between young adult and aged mice after TBI. Although the mechanisms underlying this age-effect remain unclear, attenuated signs of secondary brain injury in aged TBI mice point towards different inflammatory and repair processes between age groups. These data suggest that age may need to be an a priori consideration in future clinical trial design.

Indexed as

AgingAnimalsBrain Injuries, TraumaticMagnetic Resonance ImagingMaleMaze LearningMiceMice, Inbred C57BLRecovery of FunctionTreatment OutcomeAgeBehaviorControlled cortical impactFearNeurodegenerationTraumaTraumatic brain injury

Identifiers

PMID33831399
PMCPMC8276249
OpenAlexW3148799391

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.