Evidence map›Paper›PMID 34045465›Full record

ArticleNature communications2021

Neurovascular coupling and oxygenation are decreased in hippocampus compared to neocortex because of microvascular differences.

K Shaw, L Bell, K Boyd, D M Grijseels, D Clarke, O Bonnar, H S Crombag, C N Hall

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 116 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
116citing papers in PubMed, 2 pooled it
16.0field-weighted citation impact, top 1% 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

116 citing papers in PubMed, 2 syntheses or guidelines pooled it, 176 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Arterial stiffness moderates the link between NfL and cognition: The IGNITE study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Trial
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  8. Article
  9. A review of animal models of vascular dementia.Molecular biology reports · 2026
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Neurovascular decoupling: An early indicator of cognitive decline.Journal of Alzheimer's disease : JAD · 2026
    Article
  18. Vascular contribution to cognitive impairment and dementia (VCID): proceedings of 2025 workshop of the Jackson Laboratory.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

K ShawSchool of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.ORCID http://orcid.org/0000-0003-3889-1171
L Bell *School of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.
K Boyd *School of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.
D M Grijseels *School of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.ORCID http://orcid.org/0000-0002-3822-5323
D ClarkeSchool of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.
O BonnarSchool of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.ORCID http://orcid.org/0000-0002-8665-558X
H S CrombagSchool of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom.ORCID http://orcid.org/0000-0002-0052-7836
C N HallSchool of Psychology and Sussex Neuroscience, University of Sussex, Falmer, Brighton, United Kingdom. catherine.hall@sussex.ac.uk.ORCID http://orcid.org/0000-0002-2316-7714
University of Sussex · GB

Funding

Medical Research Council MC_PC_15071Medical Research Council MR/S026495/1Wellcome Trust
6 · The paper itself

Abstract

The hippocampus is essential for spatial and episodic memory but is damaged early in Alzheimer's disease and is very sensitive to hypoxia. Understanding how it regulates its oxygen supply is therefore key for designing interventions to preserve its function. However, studies of neurovascular function in the hippocampus in vivo have been limited by its relative inaccessibility. Here we compared hippocampal and visual cortical neurovascular function in awake mice, using two photon imaging of individual neurons and vessels and measures of regional blood flow and haemoglobin oxygenation. We show that blood flow, blood oxygenation and neurovascular coupling were decreased in the hippocampus compared to neocortex, because of differences in both the vascular network and pericyte and endothelial cell function. Modelling oxygen diffusion indicates that these features of the hippocampal vasculature may restrict oxygen availability and could explain its sensitivity to damage during neurological conditions, including Alzheimer's disease, where the brain's energy supply is decreased.

Indexed as

Adenosine TriphosphateAlzheimer DiseaseAnimalsCell HypoxiaDementia, VascularFemaleHippocampusHumansIntravital MicroscopyLaser-Doppler FlowmetryMaleMiceMicrocirculationMicroscopy, Fluorescence, MultiphotonMicrovesselsModels, AnimalAdenosine TriphosphateOxygen

Identifiers

PMID34045465
PMCPMC8160329
OpenAlexW3160045421

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.