Evidence map›Paper›PMID 26634420›Full record

ArticleThe Journal of physiology2016

Rigid and remodelled: cerebrovascular structure and function after experimental high-thoracic spinal cord transection.

A A Phillips, N Matin, B Frias, M M Z Zheng, M Jia, C West, A M Dorrance, I Laher, A V Krassioukov

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
3.1field-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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Dysreflexic dilemma: do we need a revised definition for autonomic dysreflexia?Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2025
    Article
  6. Article
  7. Sex differences in the structure and function of rat middle cerebral arteries.American journal of physiology. Heart and circulatory physiology · 2020
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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

9 authors at 4 institutions in 2 countries.

A A PhillipsInternational Collaboration on Repair Discoveries, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
N MatinPharmacology, Michigan State University, East Lansing, MI, USA.
B FriasInternational Collaboration on Repair Discoveries, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
M M Z ZhengInternational Collaboration on Repair Discoveries, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
M JiaInternational Collaboration on Repair Discoveries, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
C WestInternational Collaboration on Repair Discoveries, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
A M DorrancePharmacology, Michigan State University, East Lansing, MI, USA.
I LaherDeptartment of Pharmacology and Therapeutic, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
A V KrassioukovInternational Collaboration on Repair Discoveries, Faculty of Medicine, University of British Columbia, Vancouver, Canada.
University of British Columbia · CAInternational Collaboration On Repair Discoveries · CAMichigan State University · USGF Strong Rehabilitation Centre · CA

Funding

Integrative Training in the Pharmacological SciencesT32GM092715 · NIGMS · MICHIGAN STATE UNIVERSITY · PI NEUBIG, RICHARD R · 2011 to 2020
$1.5M
Canadian Institutes of Health ResearchNIGMS NIH HHS T32 GM092715
6 · The paper itself

Abstract

High-thoracic or cervical spinal cord injury (SCI) is associated with several critical clinical conditions related to impaired cerebrovascular health, including: 300-400% increased risk of stroke, cognitive decline and diminished cerebral blood flow regulation. The purpose of this study was to examine the influence of high-thoracic (T3 spinal segment) SCI on cerebrovascular structure and function, as well as molecular markers of profibrosis. Seven weeks after complete T3 spinal cord transection (T3-SCI, n = 15) or sham injury (Sham, n = 10), rats were sacrificed for either middle cerebral artery (MCA) structure and function assessments via ex vivo pressure myography, or immunohistochemical analyses. Myogenic tone was unchanged, but over a range of transmural pressures, inward remodelling occurred after T3-SCI with a 40% reduction in distensibility (both P < 0.05), and a 33% reduction in vasoconstrictive reactivity to 5-HT trending toward significance (P = 0.09). After T3-SCI, the MCA had more collagen I (42%), collagen III (24%), transforming growth factor β (47%) and angiotensin II receptor type 2 (132%), 27% less elastin as well as concurrent increased wall thickness and reduced lumen diameter (all P < 0.05). Sympathetic innervation (tyrosine hydroxylase-positive axon density) and endothelium-dependent dilatation (carbachol) of the MCA were not different between groups. This study demonstrates profibrosis and hypertrophic inward remodelling within the largest cerebral artery after high-thoracic SCI, leading to increased stiffness and possibly impaired reactivity. These deleterious adaptations would substantially undermine the capacity for regulation of cerebral blood flow and probably underlie several cerebrovascular clinical conditions in the SCI population.

Indexed as

VasoconstrictionAnimalsAxonsCollagenElastinFibrosisMaleMiddle Cerebral ArteryRatsRats, WistarReceptor, Angiotensin, Type 2Spinal Cord InjuriesTransforming Growth Factor betaTyrosine 3-MonooxygenaseCollagenElastinReceptor, Angiotensin, Type 2Transforming Growth Factor betaTyrosine 3-Monooxygenase

Identifiers

PMID26634420
PMCPMC4799971
OpenAlexW2181958338

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.