Evidence map›Paper›PMID 30672378›Full record

ArticleJournal of neurotrauma2019

Carnosic Acid Improves Outcome after Repetitive Mild Traumatic Brain Injury.

Mark E Maynard, Erica L Underwood, John B Redell, Jing Zhao, Nobuhide Kobori, Kimberly N Hood, Anthony N Moore, Pramod K Dash

Open access · greenAbstract read
In one paragraph

Article in Journal of neurotrauma, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
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  3. Mitochondrial-targeted therapies in traumatic brain injury: From bench to bedside.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
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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

8 authors at 1 institution in 1 country.

Mark E MaynardDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
Erica L UnderwoodDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
John B RedellDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
Jing ZhaoDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
Nobuhide KoboriDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
Kimberly N HoodDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
Anthony N MooreDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
Pramod K DashDepartment of Neurobiology and Anatomy, the University of Texas McGovern Medical School, Houston, Texas.
The University of Texas Health Science Center · US

Funding

ROLE OF THE GUT IN POST INJURY MULTIPLE ORGAN FAILURET32GM008792 · NIGMS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI Charles S Cox · 2001 to 2026
$5.2M
Reducing Memory Dysfunction Following Brain InjuryR01NS087149 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI DASH, PRAMOD K · 2014 to 2018
$2.3M
Role of Glut4 in TBI PathophysiologyR01NS086301 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI DASH, PRAMOD K · 2015 to 2019
$1.7M
NIGMS NIH HHS T32 GM008792NINDS NIH HHS R01 NS086301NINDS NIH HHS R01 NS087149
6 · The paper itself

Abstract

In the majority of cases, the cognitive and behavioral impairments resulting from a mild traumatic brain injury (TBI) (also referred to as concussion) wane within days to weeks. In contrast, these impairments can persist for months to years after repetitive mild TBI (rmTBI). The cellular and molecular mechanisms underlying these impairments are not well understood. In the present study, we examined the consequences of rmTBI (three weight drops each separated by 72 h) on brain tissue respiration, pathology, and cognitive performance in mice. The transcription factor nuclear factor-erythroid 2-realted factor 2 (Nrf2) has been demonstrated to enhance the expression of numerous cytoprotective genes. Carnosic acid (CA) has been shown to activate Nrf2 and suppress the proinflammatory transcription factor nuclear factor kappa B (NF-κB). Because contemporaneous activation of cytoprotective genes and inhibition of proinflammatory genes can be beneficial, we questioned whether CA can be used to mitigate the pathobiology of rmTBI. The rmTBI increased hippocampal adenosine triphosphate-linked tissue respiration and proton leak that were unaffected by CA treatment. The rmTBI also caused significant motor and cognitive dysfunction, as tested using the foot fault, Barnes maze, and novel object recognition tasks. These impairments occurred in the absence of visible neuronal or dendritic loss. Post-rmTBI administration of CA significantly improved motor and cognitive function, and decreased Gfap and Iba1 immunoreactivities within white matter tracks. Taken together, these results show that rmTBI can cause cognitive impairments in the absence of overt neuronal pathologies, and post-injury treatment with CA can lessen some of these impairments.

Indexed as

Brain ConcussionAbietanesAnimalsAntioxidantsMaleMiceMice, Inbred C57BLRecovery of FunctionAbietanesAntioxidantssalvinbrain tissue respirationNF-κBNrf2 activatorrepeat concussive injurytissue respirationwhite matter inflammation

Identifiers

PMID30672378
PMCPMC6602106
OpenAlexW2911234717

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.