Evidence map›Paper›PMID 18032737›Full record

ArticleStroke2008

Responses of endothelial cell and astrocyte matrix-integrin receptors to ischemia mimic those observed in the neurovascular unit.

Richard Milner, Stephanie Hung, Xiaoyun Wang, Greta I Berg, Maria Spatz, Gregory J del Zoppo

Open access · bronzeAbstract read
In one paragraph

Article in Stroke, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 8% 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

73 citing papers in PubMed, 1 synthesis or guideline pooled it, 109 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Oxygen-Glucose Deprived Peripheral Blood Mononuclear Cells Protect Against Ischemic Stroke.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. EGCG Promotes Neurite Outgrowth through the IntegrinEvidence-based complementary and alternative medicine : eCAM · 2021
    Article
  18. Review
  19. Article
  20. Article

13 more citing papers are in PubMed but not listed here.

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

6 authors at 1 institution in 1 country.

Richard MilnerDepartment of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA.
Stephanie Hung
Xiaoyun Wang
Greta I Berg
Maria Spatz
Gregory J del Zoppo
University of Washington · US

Funding

Neurovascular Adhesion Receptors and Barrier IntegrityR01NS053716 · NINDS · UNIVERSITY OF WASHINGTON · PI DEL ZOPPO, GREGORY J · 2006 to 2016
$3.5M
Matrix Metalloproteinases and Neurons in Focal IschemiaR37NS038710 · NINDS · UNIVERSITY OF WASHINGTON · PI DEL ZOPPO, GREGORY J · 2004 to 2010
$3.2M
MICROVASCULAR OCCLUSIONS--ACUTE FOCAL CEREBRAL ISCHEMIAR01NS026945 · NINDS · SCRIPPS RESEARCH INSTITUTE · PI DEL ZOPPO, GREGORY J · 1989 to 2004
$2.2M
NINDS NIH HHS R01 NS026945NINDS NIH HHS R01 NS053716NINDS NIH HHS R37 NS038710
6 · The paper itself

Abstract

background and purposeApposition of endothelial cells and astrocyte foot processes to the basal lamina matrix is postulated to underlie the cerebral microvessel permeability barrier. Focal cerebral ischemia induces rapid loss of select matrix-binding integrins from both cell compartments in the nonhuman primate. This study is the first to examine the conditions underlying integrin loss from these cell-types during ischemia in vitro and their relation to the changes in vivo.

methodsThe impact of normoxia or standardized oxygen-glucose deprivation on integrin expression by murine primary cerebral endothelial cells and astrocytes grown on matrix substrates (collagen IV, laminin, and perlecan) of the basal lamina were quantitatively assessed by flow cytometry.

resultsEndothelial cell expression of the beta1 and alpha 5 subunits significantly increased on all matrix ligands, whereas astrocytes displayed modest significant decreases in alpha 5 and alpha 6 subunits. Oxygen-glucose deprivation produced a further significant increase in subunit beta1 expression by both cell types, but a clear decrease in both alpha1 and alpha 6 subunits by murine astrocytes.

conclusionsIschemia in vitro significantly increased endothelial cell beta1 expression, which is consistent with the increase in beta1 transcription by microvessels peripheral to the ischemic core. The loss of alpha1 and alpha 6 integrins from murine astrocytes is identical to that seen in the nonhuman primate in vivo. These findings establish both isolated murine cerebral endothelial cells and astrocytes as potential integrin response cognates of microvascular cells of the neurovascular unit in primates, and allow determination of the mechanisms of their changes to ischemia.

Indexed as

AnimalsAstrocytesBrain IschemiaCells, CulturedEndothelium, VascularExtracellular Matrix ProteinsGlucoseIntegrin alpha1Integrin alpha5Integrin alpha6Integrin beta1IntegrinsMiceMice, Inbred C57BLOxygenExtracellular Matrix ProteinsGlucoseIntegrin alpha1Integrin alpha5Integrin alpha6Integrin beta1IntegrinsOxygen

Identifiers

PMID18032737
PMCPMC2588548
OpenAlexW2042949663

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.