Evidence map›Paper›PMID 35061562›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2022

Hypoxemia increases blood-brain barrier permeability during extreme apnea in humans.

Damian M Bailey, Anthony R Bain, Ryan L Hoiland, Otto F Barak, Ivan Drvis, Christophe Hirtz, Sylvain Lehmann, Nicola Marchi, Damir Janigro, David B MacLeod and 2 more

Open access · hybridAbstract 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, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
3.1field-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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Article
  7. Hypoxia in multiple sclerosis.Redox biology · 2025
    Review
  8. Review
  9. Article
  10. Trends in competitive freediving accidents.Diving and hyperbaric medicine · 2024
    Article
  11. Systemic determinants of brain health in ageing.Nature reviews. Neurology · 2024
    Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
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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

12 authors at 10 institutions in 6 countries.

Damian M BaileyNeurovascular Research Laboratory, Faculty of Life Sciences and Education, 6654University of South Wales, University of South Wales, Glamorgan, UK.ORCID 0000-0003-0498-7095
Anthony R BainFaculty of Human Kinetics, University of Windsor, Windsor, ON, Canada.
Ryan L HoilandDepartment of Anaesthesiology, Pharmacology and Therapeutics, Vancouver General Hospital, University of British Columbia, Vancouver, BC, Canada.
Otto F BarakSchool of Medicine, University of Split, Split, Croatia.
Ivan DrvisSchool of Kinesiology, University of Zagreb, Zagreb, Croatia.
Christophe HirtzLBPC-PPC, University of Montpellier, Institute of Regenerative Medicine-Biotherapy IRMB, Centre Hospitalier Universitaire de Montpellier, INSERM, Montpellier, France.
Sylvain LehmannLBPC-PPC, University of Montpellier, Institute of Regenerative Medicine-Biotherapy IRMB, Centre Hospitalier Universitaire de Montpellier, INSERM, Montpellier, France.
Nicola MarchiInstitute of Functional Genomics, University of Montpellier, Montpellier, France.
Damir JanigroDepartment of Physiology, Case Western Reserve University, Cleveland, OH, USA.
David B MacLeodDepartment of Anesthesiology, Duke University Medical Center, Durham, NC, USA.
Philip N AinslieNeurovascular Research Laboratory, Faculty of Life Sciences and Education, 6654University of South Wales, University of South Wales, Glamorgan, UK.
Zeljko DujicSchool of Medicine, University of Split, Split, Croatia.
Inserm · FRUniversity of South Wales · GBCase Western Reserve University · USDuke Medical Center · USUniversité de Montpellier · FRUniversity of British Columbia · CAUniversity of Novi Sad · RSUniversity of Split · HRUniversity of Windsor · CAUniversity of Zagreb · HR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Voluntary asphyxia imposed by static apnea challenges blood-brain barrier (BBB) integrity in humans through transient extremes of hypertension, hypoxemia and hypercapnia. In the present study, ten ultra-elite breath-hold divers performed two maximal dry apneas preceded by normoxic normoventilation (NX: severe hypoxemia and hypercapnia) and hyperoxic hyperventilation (HX: absence of hypoxemia with exacerbating hypercapnia) with measurements obtained before and immediately after apnea. Transcerebral exchange of NVU proteins (ELISA, Single Molecule Array) were calculated as the product of global cerebral blood flow (gCBF, duplex ultrasound) and radial arterial to internal jugular venous concentration gradients. Apnea duration increased from 5 m 6 s in NX to 15 m 59 s in HX (

Indexed as

ApneaHypercapniaBlood-Brain BarrierHumansHypoxiaPermeabilityblood-brain barriercerebral blood flowhypercapniahyperoxiaHypoxia

Identifiers

PMID35061562
PMCPMC9121528
OpenAlexW4207001384

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.