Evidence map›Paper›PMID 19048434›Full record

ArticleFree radical research2009

Comparison of rat liver and brain proteasomes for oxidative stress-induced inactivation: Influence of ageing and dietary restriction.

Kalavathi Dasuri, Anhthao Nguyen, Le Zhang, Ok Sun Fernandez-Kim, Annadora J Bruce-Keller, Bradford A Blalock, Rafael De Cabo, Jeffrey N Keller

Open access · greenAbstract readComparative Study
In one paragraph

Article in Free radical research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.4field-weighted citation impact, top 21% 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

23 citing papers in PubMed, 36 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Kalavathi DasuriPennington Biomedical Research Center/Louisiana State University System, Baton Rouge, LA 70808-4124, USA.
Anhthao Nguyen
Le Zhang
Ok Sun Fernandez-Kim
Annadora J Bruce-Keller
Bradford A Blalock
Rafael De Cabo
Jeffrey N Keller
Pennington Biomedical Research Center · USLouisiana State University System · USNational Institute on Aging · US

Funding

Research BaseP30DK072476 · NIDDK · LSU PENNINGTON BIOMEDICAL RESEARCH CTR · PI ROBERT A KESTERSON · 2005 to 2026
$26.5M
Dietary restriction and proteasome-mediated protein degradation in the aging CNSR01AG029885 · NIA · UNIVERSITY OF KENTUCKY · PI KELLER, JEFFREY NEIL · 2007 to 2011
$1.4M
Dietary restriction, aging, and the proteasomeR01AG025771 · NIA · UNIVERSITY OF KENTUCKY · PI KELLER, JEFFREY NEIL · 2007 to 2011
$1.3M
Intramural NIH HHSNIA NIH HHS AG0257701NIA NIH HHS AG029885NIA NIH HHS R01 AG025771NIA NIH HHS R01 AG029885NIDDK NIH HHS P30 DK072476
6 · The paper itself

Abstract

The present study examined brain and liver derived proteasome complexes to elucidate if there is a differential susceptibility in proteasome complexes from these tissues to undergo inactivation following exposure to oxidative stressors. It then examined the influence of ageing and dietary restriction (DR) on the observed proteasome inactivation. Studies used a filtration based methodology that allows for enrichment of proteasome complexes with less tissue than is required for traditional chromatography procedures. The results indicate that the brain has much lower levels of overall proteasome activity and exhibits increased sensitivity to hydrogen peroxide mediated inactivation as compared to proteasome complexes derived from the liver. Interestingly, the brain proteasome complexes did not appear to have increased susceptibility to 4-hydroxynonenal (HNE)-induced inactivation. Surprisingly, ageing and DR induced minimal effects on oxidative stress mediated proteasome inhibition. These results indicate that the brain not only has lower levels of proteasome activity compared to the liver, but is also more susceptible to inactivation following exposure to some (but certainly not all) oxidative stressors. This data also suggest that ageing and DR may not significantly modulate the resistance of the proteasome to inactivation in some experimental settings.

Indexed as

Caloric RestrictionAgingAldehydesAnimalsBrainCysteine Proteinase InhibitorsDietElectrophoresis, Polyacrylamide GelHydrogen PeroxideLiverOxidantsOxidative StressProteasome Endopeptidase ComplexRats4-hydroxy-2-nonenalAldehydesCysteine Proteinase InhibitorsHydrogen PeroxideOxidantsProteasome Endopeptidase Complex

Identifiers

PMID19048434
PMCPMC2735019
OpenAlexW1967320088

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.