Evidence map›Paper›PMID 33050825›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2021

Impairment of cerebrovascular reactivity in response to hypercapnic challenge in a mouse model of repetitive mild traumatic brain injury.

Cillian E Lynch, Maxwell Eisenbaum, Moustafa Algamal, Matilde Balbi, Scott Ferguson, Benoit Mouzon, Nicole Saltiel, Joseph Ojo, Ramon Diaz-Arrastia, Mike Mullan and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 17% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Persistent dysmorphology and dysfunction of the brain microvasculature following repeated trauma.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2026
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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

12 authors at 4 institutions in 3 countries.

Cillian E LynchThe Roskamp Institute, Sarasota, FL, USA.
Maxwell EisenbaumThe Roskamp Institute, Sarasota, FL, USA.
Moustafa AlgamalThe Roskamp Institute, Sarasota, FL, USA.
Matilde BalbiDepartment of Psychiatry, University of British Columbia, Vancouver, British Columbia, Canada.
Scott FergusonThe Roskamp Institute, Sarasota, FL, USA.
Benoit MouzonThe Roskamp Institute, Sarasota, FL, USA.
Nicole SaltielThe Roskamp Institute, Sarasota, FL, USA.
Joseph OjoThe Roskamp Institute, Sarasota, FL, USA.
Ramon Diaz-ArrastiaDepartment of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
Mike MullanThe Roskamp Institute, Sarasota, FL, USA.
Fiona CrawfordThe Roskamp Institute, Sarasota, FL, USA.
Corbin BachmeierThe Roskamp Institute, Sarasota, FL, USA.ORCID 0000-0003-1355-5403
The Open University · GBRoskamp Institute · USUniversity of British Columbia · CAUniversity of Pennsylvania · US

Funding

Influence of apoE on LRP1 function and Beta-Amyloid Transport Across the BBBR01AG041971 · NIA · ROSKAMP INSTITUTE, INC. · PI BACHMEIER, CORBIN, CRAWFORD, FIONA C. · 2012 to 2016
$1.5M
NIA NIH HHS R01 AG041971
6 · The paper itself

Abstract

Incidences of repetitive mild TBI (r-mTBI), like those sustained by contact sports athletes and military personnel, are thought to be a risk factor for development of neurodegenerative disorders. Those suffering from chronic TBI-related illness demonstrate deficits in cerebrovascular reactivity (CVR), the ability of the cerebral vasculature to respond to a vasoactive stimulus. CVR is thus an important measure of traumatic cerebral vascular injury (TCVI), and a possible in vivo endophenotype of TBI-related neuropathogenesis. We combined laser speckle imaging of CVR in response to hypercapnic challenge with neurobehavioral assessment of learning and memory, to investigate if decreased cerebrovascular responsiveness underlies impaired cognitive function in our mouse model of chronic r-mTBI. We demonstrate a profile of blunted hypercapnia-evoked CVR in the cortices of r-mTBI mice like that of human TBI, alongside sustained memory and learning impairment, without biochemical or immunohistopathological signs of cerebral vessel laminar or endothelium constituent loss. Transient decreased expression of alpha smooth muscle actin and platelet-derived growth factor receptor β, indicative of TCVI, is obvious only at the time of the most pronounced CVR deficit. These findings implicate CVR as a valid preclinical measure of TCVI, perhaps useful for developing therapies targeting TCVI after recurrent mild head trauma.

Indexed as

AnimalsBrain ConcussionCerebrovascular CirculationDisease Models, AnimalHypercapniaMaleMiceMice, Inbred C57BLCerebral blood flowcerebrovascular reactivitylaser speckle contrast imagingrepetitive mild traumatic brain injurytraumatic cerebral vascular injury

Identifiers

PMID33050825
PMCPMC8142124
OpenAlexW3091833272

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.