Evidence map›Paper›PMID 33970018›Full record

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

Three-dimensional ultrastructure of the brain pericyte-endothelial interface.

Sharon Ornelas, Andrée-Anne Berthiaume, Stephanie K Bonney, Vanessa Coelho-Santos, Robert G Underly, Anna Kremer, Christopher J Guérin, Saskia Lippens, Andy Y Shih

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 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
4.7field-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

58 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Review
  3. Cell-to-Cell Signaling Networks at the Blood-Brain Barrier in Health and Disease.Arteriosclerosis, thrombosis, and vascular biology · 2026
    Review
  4. Review
  5. Review
  6. A pericyte chloride clamp mechanism governs capillary control of cerebral blood flow.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  7. Article
  8. Cerebral capillary computation.American journal of physiology. Cell physiology · 2026
    Review
  9. Review
  10. Review
  11. Pericytes and Lung Vascular Remodeling.Arteriosclerosis, thrombosis, and vascular biology · 2026
    Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. The blood-brain barrier: a help and a hindrance.Brain : a journal of neurology · 2025
    Review
  17. Review
  18. Pericytes in the optic nerve head.Progress in retinal and eye research · 2025
    Review
  19. Pericyte Electrical Signalling and Brain Haemodynamics.Basic & clinical pharmacology & toxicology · 2025
    Review
  20. Article
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 2 countries.

Sharon OrnelasCenter for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA.
Andrée-Anne BerthiaumeCenter for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA.
Stephanie K BonneyCenter for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA.
Vanessa Coelho-SantosCenter for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA.ORCID 0000-0002-9450-6103
Robert G UnderlyDepartment of Neuroscience, Medical University of South Carolina, Charleston, SC, USA.
Anna KremerVIB BioImaging Core, VIB, Ghent, Belgium.
Christopher J GuérinVIB BioImaging Core, VIB, Ghent, Belgium.
Saskia LippensVIB BioImaging Core, VIB, Ghent, Belgium.
Andy Y ShihCenter for Developmental Biology and Regenerative Medicine, Seattle Children's Research Institute, Seattle, WA, USA.
Seattle Children's Hospital · USGhent University · BEMedical University of South Carolina · US

Funding

Deciphering the Cerebral Microinfarct and its Role in Vascular Cognitive ImpairmentR01NS097775 · NINDS · SEATTLE CHILDREN'S HOSPITAL · PI SHIH, ANDY Y · 2017 to 2021
$3.2M
Pericyte structural plasticity and cerebrovascular healthR01AG062738 · NIA · SEATTLE CHILDREN'S HOSPITAL · PI SHIH, ANDY Y · 2020 to 2024
$3.0M
Optical Interrogation of Venular Function in Cerebral Gray and White MatterR21AG069375 · NIA · SEATTLE CHILDREN'S HOSPITAL · PI SHIH, ANDY Y, WATERS, JACK · 2020 to 2021
$525k
Cytoskeletal Dynamics of Brain Pericytes and Impact on Capillary FlowR21NS106138 · NINDS · SEATTLE CHILDREN'S HOSPITAL · PI SHIH, ANDY Y · 2018 to 2019
$518k
The effects of amyloid beta on pericyte remodeling and brain capillary function in vivoR21AG063031 · NIA · SEATTLE CHILDREN'S HOSPITAL · PI SHIH, ANDY Y · 2019 to 2020
$512k
Superresolution Confocal Microscope for Biomedical ImagingS10OD021532 · OD · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI MULHOLLAND, PATRICK J. · 2017 to 2017
$437k
Cellular Behaviors of Perivascular Fibroblasts in Cerebral IschemiaF32NS117649 · NINDS · SEATTLE CHILDREN'S HOSPITAL · PI BONNEY, STEPHANIE · 2020 to 2021
$131k
NIA NIH HHS R01 AG062738NIA NIH HHS R21 AG063031NIA NIH HHS R21 AG069375NIH HHS S10 OD021532NINDS NIH HHS F32 NS117649NINDS NIH HHS R01 NS097775NINDS NIH HHS R21 NS106138
6 · The paper itself

Abstract

Pericytes and endothelial cells share membranous interdigitations called "peg-and-socket" interactions that facilitate their adhesion and biochemical crosstalk during vascular homeostasis. However, the morphology and distribution of these ultrastructures have remained elusive. Using a combination of 3D electron microscopy techniques, we examined peg-and-socket interactions in mouse brain capillaries. We found that pegs extending from pericytes to endothelial cells were morphologically diverse, exhibiting claw-like morphologies at the edge of the cell and bouton-shaped swellings away from the edge. Reciprocal endothelial pegs projecting into pericytes were less abundant and appeared as larger columnar protuberances. A large-scale 3D EM data set revealed enrichment of both pericyte and endothelial pegs around pericyte somata. The ratio of pericyte versus endothelial pegs was conserved among the pericytes examined, but total peg abundance was heterogeneous across cells. These data show considerable investment between pericytes and endothelial cells, and provide morphological evidence for pericyte somata as sites of enriched physical and biochemical interaction.

Indexed as

AnimalsBrainDisease Models, AnimalEndothelial CellsHumansMaleMiceMicroscopy, Electron, ScanningPericytesand pericyteCapillaryelectron microscopyendothelial cellpeg-and-socket

Identifiers

PMID33970018
PMCPMC8393306
OpenAlexW3162551739

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.