Evidence map›Paper›PMID 33422552›Full record

ArticleExperimental neurology2021

Mitochondria exert age-divergent effects on recovery from spinal cord injury.

Andrew N Stewart, Katelyn E McFarlane, Hemendra J Vekaria, William M Bailey, Stacey A Slone, Lauren A Tranthem, Bei Zhang, Samir P Patel, Patrick G Sullivan, John C Gensel

Open access · hybridAbstract read
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 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

14 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Challenges in Translating Regenerative Therapies for Spinal Cord Injury.Topics in spinal cord injury rehabilitation · 2023
    Article
  8. Article
  9. Article
  10. Article
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  12. Review
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  14. Review
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

10 authors at 2 institutions in 1 country.

Andrew N StewartDepartment of Physiology, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA. Electronic address: Andrew.N.Stewart@uky.edu.
Katelyn E McFarlaneDepartment of Physiology, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
Hemendra J VekariaDepartment of Neuroscience, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
William M BaileyDepartment of Physiology, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
Stacey A SloneDepartment of Statistics, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
Lauren A TranthemDepartment of Physiology, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
Bei ZhangBrain and Mind Research Institute Weill Cornell, Weill Cornell Medicine, New York, NY, 10021, USA.
Samir P PatelDepartment of Physiology, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
Patrick G SullivanDepartment of Neuroscience, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA.
John C GenselDepartment of Physiology, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA; Spinal Cord and Brain Injury Research Center, University of College of Medicine, College of Arts and Sciences, University of Kentucky, Lexington, KY 40536, USA. Electronic address: gensel.1@uky.edu.
University of Kentucky · USWeill Cornell Medicine · US

Funding

The role of macrophage phenotype and age in spinal cord injuryR01NS091582 · NINDS · UNIVERSITY OF KENTUCKY · PI GENSEL, JOHN C · 2015 to 2019
$1.6M
Role of Age on Anti-oxidant Defense in Spinal Cord Injury: Physiological Changes and InterventionF32NS111241 · NINDS · UNIVERSITY OF KENTUCKY · PI STEWART, ANDREW NATHANIEL · 2019 to 2021
$161k
NINDS NIH HHS F32 NS111241NINDS NIH HHS R01 NS091582
6 · The paper itself

Abstract

The extent that age-dependent mitochondrial dysfunction drives neurodegeneration is not well understood. This study tested the hypothesis that mitochondria contribute to spinal cord injury (SCI)-induced neurodegeneration in an age-dependent manner by using 2,4-dinitrophenol (DNP) to uncouple electron transport, thereby increasing cellular respiration and reducing reactive oxygen species (ROS) production. We directly compared the effects of graded DNP doses in 4- and 14-month-old (MO) SCI-mice and found DNP to have increased efficacy in mitochondria isolated from 14-MO animals. In vivo, all DNP doses significantly exacerbated 4-MO SCI neurodegeneration coincident with worsened recovery. In contrast, low DNP doses (1.0-mg/kg/day) improved tissue sparing, reduced ROS-associated 3-nitrotyrosine (3-NT) accumulation, and improved anatomical and functional recovery in 14-MO SCI-mice. By directly comparing the effects of DNP between ages we demonstrate that mitochondrial contributions to neurodegeneration diverge with age after SCI. Collectively, our data indicate an essential role of mitochondria in age-associated neurodegeneration.

Indexed as

Aging2,4-DinitrophenolAnimalsCell SurvivalDisease ProgressionFemaleMiceMice, Inbred C57BLMitochondriaNeurodegenerative DiseasesNeuronsOxidative StressOxygen ConsumptionReactive Oxygen SpeciesRecovery of FunctionSpinal Cord Injuries2,4-Dinitrophenol3-nitrotyrosineReactive Oxygen SpeciesTyrosineUncoupling AgentsBioenergeticsMetabolismMitochondrial oxidative damageMitochondrial UncouplersNeuroprotectionSecondary injury

Identifiers

PMID33422552
PMCPMC7870583
OpenAlexW3120270902

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.