Evidence map›Paper›PMID 28473320›Full record

ArticlePhysiological reports2017

Chronic intermittent hypoxia induces oxidative stress and inflammation in brain regions associated with early-stage neurodegeneration.

Brina Snyder, Brent Shell, J Thomas Cunningham, Rebecca L Cunningham

Open access · goldAbstract read
In one paragraph

Article in Physiological reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
127citing papers in PubMed, 2 pooled it
8.9field-weighted citation impact, top 2% 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

127 citing papers in PubMed, 2 syntheses or guidelines pooled it, 181 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. HBiomedicines · 2026
    Article
  10. Article
  11. Article
  12. Altered brain glucose metabolism and connectivity in young adults with obstructive sleep apnea.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Review
  19. Article
  20. Review

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

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

4 authors at 2 institutions in 1 country.

Brina SnyderInstitute for Health Aging, University of North Texas Health Science Center, Fort Worth, Texas.
Brent ShellInstitute for Cardiovascular and Metabolic Disease, University of North Texas Health Science Center, Fort Worth, Texas.
J Thomas CunninghamInstitute for Cardiovascular and Metabolic Disease, University of North Texas Health Science Center, Fort Worth, Texas.
Rebecca L CunninghamInstitute for Health Aging, University of North Texas Health Science Center, Fort Worth, Texas rebecca.cunningham@unthsc.edu.
University of North Texas · USUniversity of North Texas Health Science Center · US

Funding

Neurohumoral Adaptations to Chronic Intermittent Hypoxia: Insights into the Pathophysiology of Sleep ApneaP01HL088052 · NHLBI · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI CUNNINGHAM, J THOMAS · 2008 to 2019
$18.8M
Training in the Neurobiology of Aging and Alzheimer's DiseaseT32AG020494 · NIA · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI ROBERT Clinton BARBER, NATHALIE SUMIEN · 2002 to 2026
$6.9M
Interactions between testosterone and oxidative stress in dopamine neuronsR01NS091359 · NINDS · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI CUNNINGHAM, REBECCA L · 2015 to 2019
$1.6M
6 · The paper itself

Abstract

Sleep apnea is a common comorbidity of neurodegenerative diseases, such as Alzheimer's disease (AD) and Parkinson's disease (PD). Previous studies have shown an association between elevated oxidative stress and inflammation with severe sleep apnea. Elevated oxidative stress and inflammation are also hallmarks of neurodegenerative diseases. We show increased oxidative stress and inflammation in a manner consistent with early stages of neurodegenerative disease in an animal model of mild sleep apnea. Male rats were exposed to 7 days chronic intermittent hypoxia (CIH) for 8 h/day during the light period. Following CIH, plasma was collected and tested for circulating oxidative stress and inflammatory markers associated with proinflammatory M1 or anti-inflammatory M2 profiles. Tissue punches from brain regions associated with different stages of neurodegenerative diseases (early stage: substantia nigra and entorhinal cortex; intermediate: hippocampus; late stage: rostral ventrolateral medulla and solitary tract nucleus) were also assayed for inflammatory markers. A subset of the samples was examined for 8-hydroxydeoxyguanosine (8-OHdG) expression, a marker of oxidative stress-induced DNA damage. Our results showed increased circulating oxidative stress and inflammation. Furthermore, brain regions associated with early-stage (but not late-stage) AD and PD expressed oxidative stress and inflammatory profiles consistent with reported observations in preclinical neurodegenerative disease populations. These results suggest mild CIH induces key features that are characteristic of early-stage neurodegenerative diseases and may be an effective model to investigate mechanisms contributing to oxidative stress and inflammation in those brain regions.

Indexed as

Oxidative StressAnimalsBrainDNA DamageHypoxiaMaleNeurodegenerative DiseasesRatsRats, Sprague-DawleySleep Apnea SyndromesEntorhinal cortexhippocampusRVLMsolitary tract nucleussubstantia nigra

Identifiers

PMID28473320
PMCPMC5430123
OpenAlexW2529568074

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.