Evidence map›Paper›PMID 22126916›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2012

PlGF knockout delays brain vessel growth and maturation upon systemic hypoxic challenge.

Moises Freitas-Andrade, Peter Carmeliet, Claudie Charlebois, Danica B Stanimirovic, Maria J Moreno

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, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

23 citing papers in PubMed, 41 citations in OpenAlex.

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  20. Brain homeostasis: VEGF receptor 1 and 2-two unequal brothers in mind.Cellular and molecular life sciences : CMLS · 2013
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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

5 authors at 3 institutions in 2 countries.

Moises Freitas-AndradeCerebrovascular Research Group, Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ontario, Canada.
Peter Carmeliet
Claudie Charlebois
Danica B Stanimirovic
Maria J Moreno
Institute for Biological Sciences · CAUniversity of Ottawa · CAKU Leuven · BE

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

In this study, we have investigated the potential role of placental growth factor (PlGF) in hypoxia-induced brain angiogenesis. To this end, PlGF wild-type (PlGF(+/+)) and PlGF knockout (PlGF(-/-)) mice were exposed to whole body hypoxia (10% oxygen) for 7, 14, and 21 days. PlGF(+/+) animals exhibited a significant ~40% increase in angiogenesis after 7 days of hypoxia compared with controls, while in PlGF(-/-) this effect only occurred after 14 days of hypoxia. No differences in pericyte/smooth muscle cell (SMC) coverage between the two genotypes were observed. After 14 days of hypoxia, PlGF(-/-) microvessels had a significant increase in fibrinogen accumulation and extravasation compared with those of PlGF(+/+), which correlated with endothelial cell disruption of the tight junction protein claudin-5. These vessels displayed large lumens, were surrounded by reactive astrocytes, lacked both pericyte/SMC coverage and endothelial vascular endothelial growth factor expression, and regressed after 21 days of hypoxia. Vascular endothelial growth factor expression levels were found to be significantly lower in the frontal cortex of PlGF(-/-) compared with those in PlGF(+/+) animals during the first 5 days of hypoxia, which in combination with the lack of PlGF may have contributed to the delayed angiogenic response and the prothrombotic phenotype observed in the PlGF(-/-)animals.

Indexed as

BrainCerebrovascular CirculationNeovascularization, PhysiologicAnimalsAstrocytesClaudin-5ClaudinsEndothelial CellsGene Expression RegulationHypoxiaMembrane ProteinsMiceMice, KnockoutProteinsTight JunctionsTime FactorsClaudin-5ClaudinsCldn5 protein, mouseMembrane ProteinsPigf protein, mouseProteinsVascular Endothelial Growth Factor Avascular endothelial growth factor A, mouse

Identifiers

PMID22126916
PMCPMC3318143
OpenAlexW2073847471

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.