Evidence map›Paper›PMID 21126175›Full record

ArticleAntioxidants & redox signaling2011

Sustained activation of nuclear erythroid 2-related factor 2/antioxidant response element signaling promotes reductive stress in the human mutant protein aggregation cardiomyopathy in mice.

Namakkal Soorappan Rajasekaran, Saradhadevi Varadharaj, Gayatri D Khanderao, Christopher J Davidson, Sankaranarayanan Kannan, Matthew A Firpo, Jay L Zweier, Ivor J Benjamin

Open access · greenAbstract read
In one paragraph

Article in Antioxidants & redox signaling, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

84 citing papers in PubMed, 141 citations in OpenAlex.

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  12. Cardiovascular aging: spotlight on mitochondria.American journal of physiology. Heart and circulatory physiology · 2024
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24 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

8 authors at 3 institutions in 1 country.

Namakkal Soorappan RajasekaranDivision of Cardiology, Department of Internal Medicine, University of Utah Health Sciences Center, Salt Lake City, Utah 84132, USA. raj.soorappan@hsc.utah.edu
Saradhadevi Varadharaj
Gayatri D Khanderao
Christopher J Davidson
Sankaranarayanan Kannan
Matthew A Firpo
Jay L Zweier
Ivor J Benjamin
University of Utah · USThe Ohio State University · USThe University of Texas MD Anderson Cancer Center · US

Funding

Stat3 in Post-Ischemic Myocardial InflammationP01HL065608 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI BECKER, LEWIS C · 2000 to 2011
$22.0M
OXYGEN RADICALS AND NITRIC OXIDE IN POSTISCHEMIC INJURYR01HL063744 · NHLBI · OHIO STATE UNIVERSITY · PI ZWEIER, JAY LOUIS · 2000 to 2009
$5.2M
MEASURE OF FREE RADICAL GENERATION IN HEARTR01HL038324 · NHLBI · OHIO STATE UNIVERSITY · PI ZWEIER, JAY LOUIS · 1992 to 2010
$3.5M
Protein Misfolding Diseases and Oxido-Reductive PathwaysDP1OD006438 · OD · UNIVERSITY OF UTAH · PI BENJAMIN, IVOR JAMES · 2009 to 2011
$2.2M
MEASUREMENT OF FREE RADICAL GENERATION IN THE HEARTR29HL038324 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI ZWEIER, JAY LOUIS · 1987 to 1991
–
NHLBI NIH HHS HL38324NHLBI NIH HHS HL63744NHLBI NIH HHS HL65608NIH HHS DP1 OD006438
6 · The paper itself

Abstract

Inheritable missense mutations in small molecular weight heat-shock proteins (HSP) with chaperone-like properties promote self-oligomerization, protein aggregation, and pathologic states such as hypertrophic cardiomyopathy in humans. We recently described that human mutant αB-crystallin (hR120GCryAB) overexpression that caused protein aggregation cardiomyopathy (PAC) was genetically linked to dysregulation of the antioxidant system and reductive stress (RS) in mice. However, the molecular mechanism that induces RS remains only partially understood. Here we define a critical role for the regulatory nuclear erythroid 2-related factor 2 (Nrf2)-Kelch-like ECH-associated protein (Keap1) pathway--the master transcriptional controller of antioxidants, in the pathogenesis of PAC and RS. In myopathic mice, increased reactive oxygen species signaling during compensatory hypertrophy (i.e., 3 months) was associated with upregulation of key antioxidants in a manner consistent with Nrf2/antioxidant response element (ARE)-dependent transactivation. In transcription factor assays, we further demonstrate increased binding of Nrf2 to ARE during the development of cardiomyopathy. Of interest, we show that the negative regulator Keap1 was predominantly sequestrated in protein aggregates (at 6 months), suggesting that sustained nuclear translocation of activated Nrf2 may be a contributing mechanism for RS. Our findings implicate a novel pathway for therapeutic targeting and abrogating RS linked to experimental cardiomyopathy in humans. Antioxid.

Indexed as

Adaptor Proteins, Signal Transducingalpha-Crystallin B ChainAnimalsAntioxidantsBlotting, WesternCardiomyopathiesCytoskeletal ProteinsElectron Spin Resonance SpectroscopyHumansKelch-Like ECH-Associated Protein 1MiceMice, Inbred C57BLMice, TransgenicMutationNF-E2-Related Factor 2Oxidative StressAdaptor Proteins, Signal Transducingalpha-Crystallin B ChainAntioxidantsCRYAB protein, humanCytoskeletal ProteinsKeap1 protein, mouseKelch-Like ECH-Associated Protein 1NF-E2-Related Factor 2Reactive Oxygen Species

Identifiers

PMID21126175
PMCPMC3113450
OpenAlexW1987444670

What OpenQuestion holds

Textmetadata
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.