Evidence map›Paper›PMID 22459046›Full record

ArticleBrain research2012

An in vitro ischemic penumbral mimic perfusate increases NADPH oxidase-mediated superoxide production in cultured hippocampal neurons.

Matthew E Pamenter, Sameh S Ali, Qingbo Tang, J Cameron Finley, Xiang Q Gu, Laura L Dugan, Gabriel G Haddad

Open access · greenAbstract read
In one paragraph

Article in Brain research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.2field-weighted citation impact, top 7% 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

14 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Article
  3. Blockage of NOX2/MAPK/NF-Oxidative medicine and cellular longevity · 2017
    Article
  4. Optimized Model of Cerebral IschemiaFrontiers in neuroscience · 2017
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Painted turtle cortex is resistant to an in vitro mimic of the ischemic mammalian penumbra.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2012
    Article
  12. NADPH oxidase-dependent oxidative stress and mitochondrial damage in hippocampus of D-galactose-induced aging rats.Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban · 2012
    Article
  13. Article
  14. 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

7 authors at 1 institution in 1 country.

Matthew E PamenterDepartment of Pediatrics, Division of Respiratory Medicine, University of California San Diego, La Jolla, CA 92093, USA. mpamenter@ucsd.edu
Sameh S Ali
Qingbo Tang
J Cameron Finley
Xiang Q Gu
Laura L Dugan
Gabriel G Haddad
University of California, San Diego · US

Funding

THE IMPACT OF HYPOXIA ON DEVELOPMENT AND REMODELING OF CARDIC INTERCALATED DISKP01HD032573 · NICHD · YALE UNIVERSITY · PI IACOBAS, DUMITRU ANDREI · 1995 to 2009
$12.1M
Systemic Inflammation and Central Nervous System DysfunctionR01AG033679 · NIA · VANDERBILT UNIVERSITY MEDICAL CENTER · PI DUGAN, LAURA L · 2010 to 2014
$1.6M
Detection of Intracellular Oxygen SpeciesK25AG026379 · NIA · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ALI, SAMEH S · 2007 to 2011
$687k
NIA NIH HHS 1K25AG026379NIA NIH HHS K25 AG026379NIA NIH HHS R01 AG033679NICHD NIH HHS 5P01HD032573NICHD NIH HHS P01 HD032573
6 · The paper itself

Abstract

The currently accepted scheme for reactive oxygen species production during ischemia/reperfusion injury is characterized by a deleterious mitochondria-derived burst of radical generation during reperfusion; however, recent examination of the penumbra suggests a central role for NADPH-oxidase (Nox)-mediated radical generation during the ischemic period. Therefore, we utilized a novel in vitro model of the penumbra to examine the free radical profile of ischemic murine hippocampal neurons using electron paramagnetic resonance spectroscopy, and also the role of Nox in this generation and in cell fate. We report that free radical production increased ~75% at 2 h of ischemia, and this increase was abolished by: (1) scavenging of extracellular free radicals with superoxide dismutase (SOD), (2) a general anion channel antagonist, or (3) the Nox inhibitor apocynin. Similarly, at 24 h of ischemia, [ATP] decreased >95% and vital dye uptake increased 6-fold relative to controls; whereas apocynin, the Cl(-) channel antagonist 5-nitro-2-(3-phenylpropylamino)-benzoate (NPPB), or the free radical scavenger N-acetyl cysteine (NAC) each provided moderate neuroprotection, ameliorating 13-32% of [ATP]-depletion and 19-56% of vital dye uptake at 24 h. Our results support a cytotoxic role for Nox-mediated free radical production from penumbral neurons during the ischemic period.

Indexed as

AcetophenonesAcetylcysteineAnimalsCell LineCells, CulturedHippocampusMiceNADPH OxidasesNeuronsOxidation-ReductionReactive Oxygen SpeciesSuperoxidesAcetophenonesacetovanilloneAcetylcysteineNADPH OxidasesReactive Oxygen SpeciesSuperoxides

Identifiers

PMID22459046
PMCPMC3326196
OpenAlexW2113912003

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.