Evidence map›Paper›PMID 19628811›Full record

ArticleStroke2009

Cyclo-oxygenase-2 mediates hyperbaric oxygen preconditioning-induced neuroprotection in the mouse model of surgical brain injury.

Vikram Jadhav, Robert P Ostrowski, Wenni Tong, Brenden Matus, Rachel Jesunathadas, John H Zhang

Open access · bronzeAbstract readLetter
In one paragraph

Article in Stroke, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

29 citing papers in PubMed, 48 citations in OpenAlex.

  1. Review
  2. Possible role of Sox11 in a rat model of surgical brain injury.Iranian journal of basic medical sciences · 2024
    Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Surgically-induced brain injury: where are we now?Chinese neurosurgical journal · 2019
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Cyclooxygenase- and cytochrome P450-derived eicosanoids in stroke.Prostaglandins & other lipid mediators · 2016
    Review
  18. Article
  19. Article
  20. Review
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

6 authors at 1 institution in 1 country.

Vikram Jadhav
Robert P Ostrowski
Wenni Tong
Brenden Matus
Rachel Jesunathadas
John H Zhang
Loma Linda University · US

Funding

Mechanisms of Hyperbaric Oxygen Induced Brain ProtectionR01NS043338 · NINDS · LOUISIANA STATE UNIV HSC SHREVEPORT · PI ZHANG, JOHN H · 2004 to 2014
$3.0M
Neurovascular Protection for Subarachnoid HemorrhageR01NS053407 · NINDS · LOMA LINDA UNIVERSITY · PI ZHANG, JOHN H · 2006 to 2010
$1.8M
Oxygen Therapy in Neonatal Hypoxia-IschemiaR01HD043120 · NICHD · LOUISIANA STATE UNIV HSC SHREVEPORT · PI ZHANG, JOHN H. · 2003 to 2007
$1.6M
NICHD NIH HHS HD43120NICHD NIH HHS R01 HD043120NINDS NIH HHS NS43338NINDS NIH HHS NS53407NINDS NIH HHS R01 NS043338NINDS NIH HHS R01 NS053407
6 · The paper itself

Abstract

background and purposeWe investigated the role of cyclo-oxygenase-2 (COX-2) in mechanisms of hyperbaric oxygen preconditioning (HBO-PC) in the mouse model of surgical brain injury (SBI).

methodsC57BL mice were administered 100% oxygen for 1 hour at 2.5 atmosphere absolute for 5 consecutive days and subjected to SBI. Neurological status and brain edema were evaluated at 24 hours and 72 hours after the brain insult. Fluorescent immunostaining and Western blotting were performed to study hypoxia-inducible factor-1alpha and COX-2, respectively. Two doses of COX-2 inhibitor, NS398 (3 mg/kg and 10 mg/kg) were used to verify the role of COX-2 signaling pathway in the mechanism of HBO-PC.

resultsHBO-PC improved neurological status and decreased brain edema at 24 hours and 72 hours after SBI. HBO-PC by itself and SBI independently increased COX-2 levels by 2-fold and 4-fold, respectively. HBO-PC, however, reduced increase in hypoxia-inducible factor-1alpha and COX-2 expression after SBI. The HBO-PC-induced improvement in neurological status and brain edema was reversed by a suboptimal dose of the COX-2 inhibitor, NS398 (10 mg/kg intraperitoneally; 1/4th of dose shown to provide neuroprotection), which itself had no effect on investigated end points.

conclusionsHBO-PC attenuates postoperative brain edema and improves neurological outcomes after SBI. The HBO-PC-induced neuroprotection is mediated through COX-2 signaling pathways.

Indexed as

Gene Expression Regulation, EnzymologicHyperbaric OxygenationSignal TransductionAnimalsBrain EdemaBrain InjuriesCyclooxygenase 2Cyclooxygenase InhibitorsDisease Models, AnimalDose-Response Relationship, DrugHypoxia-Inducible Factor 1, alpha SubunitMaleMiceNitrobenzenesSulfonamidesSurgical Procedures, OperativeCyclooxygenase 2Cyclooxygenase InhibitorsHif1a protein, mouseHypoxia-Inducible Factor 1, alpha SubunitN-(2-cyclohexyloxy-4-nitrophenyl)methanesulfonamideNitrobenzenesPtgs2 protein, mouseSulfonamides

Identifiers

PMID19628811
PMCPMC2798800
OpenAlexW2120574979

What OpenQuestion holds

Textmetadata
LicenceTDM
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.