Evidence map›Paper›PMID 34046769›Full record

ArticleAngiogenesis2021

Pericyte hypoxia-inducible factor-1 (HIF-1) drives blood-brain barrier disruption and impacts acute ischemic stroke outcome.

Chih-Chieh Tsao, Julia Baumann, Sheng-Fu Huang, Diana Kindler, Aileen Schroeter, Nicole Kachappilly, Max Gassmann, Markus Rudin, Omolara O Ogunshola

Open access · hybridAbstract read
In one paragraph

Article in Angiogenesis, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

59 citing papers in PubMed, 86 citations in OpenAlex.

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  5. Rediscovery of pericytes within the neurovascular unit for cerebral ischemia/reperfusion injury.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 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

9 authors at 3 institutions in 1 country.

Chih-Chieh TsaoInstitute of Veterinary Physiology and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland.
Julia BaumannInstitute of Veterinary Physiology and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland.
Sheng-Fu HuangInstitute of Veterinary Physiology and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland.
Diana KindlerInstitute for Biomedical Engineering, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093, Zurich, Switzerland.
Aileen SchroeterInstitute for Biomedical Engineering, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093, Zurich, Switzerland.
Nicole KachappillyInstitute of Veterinary Physiology and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland.
Max GassmannInstitute of Veterinary Physiology and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland.
Markus RudinInstitute for Biomedical Engineering, ETH Zurich, Wolfgang-Pauli-Strasse 27, 8093, Zurich, Switzerland.
Omolara O OgunsholaInstitute of Veterinary Physiology and Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, Winterthurerstrasse 260, 8057, Zurich, Switzerland. larao@access.uzh.ch.
University of Zurich · CHInstitute for Biomedical Engineering · CHETH Zurich · CH

Funding

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung 31003A_150062
6 · The paper itself

Abstract

Pericytes play essential roles in blood-brain barrier integrity and their dysfunction is implicated in neurological disorders such as stroke although the underlying mechanisms remain unknown. Hypoxia-inducible factor-1 (HIF-1), a master regulator of injury responses, has divergent roles in different cells especially during stress scenarios. On one hand HIF-1 is neuroprotective but on the other it induces vascular permeability. Since pericytes are critical for barrier stability, we asked if pericyte HIF-1 signaling impacts barrier integrity and injury severity in a mouse model of ischemic stroke. We show that pericyte HIF-1 loss of function (LoF) diminishes ischemic damage and barrier permeability at 3 days reperfusion. HIF-1 deficiency preserved barrier integrity by reducing pericyte death thereby maintaining vessel coverage and junctional protein organization, and suppressing vascular remodeling. Importantly, considerable improvements in sensorimotor function were observed in HIF-1 LoF mice indicating that better vascular functionality post stroke improves outcome. Thus, boosting vascular integrity by inhibiting pericytic HIF-1 activation and/or increasing pericyte survival may be a lucrative option to accelerate recovery after severe brain injury.

Indexed as

Brain IschemiaIschemic StrokeStrokeAnimalsBlood-Brain BarrierHypoxiaHypoxia-Inducible Factor 1Hypoxia-Inducible Factor 1, alpha SubunitMicePericytesHypoxia-Inducible Factor 1Hypoxia-Inducible Factor 1, alpha SubunitCerebral ischemiaPericyte coveragePericyte deathVascular permeability

Identifiers

PMID34046769
PMCPMC8487886
OpenAlexW3165198259

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.