Evidence map›Paper›PMID 23722164›Full record

ArticleFree radical biology & medicine2013

Nrf2 activation: a potential strategy for the prevention of acute mountain sickness.

Christina Lisk, Joe McCord, Swapan Bose, Tim Sullivan, Zoe Loomis, Eva Nozik-Grayck, Thies Schroeder, Karyn Hamilton, David C Irwin

Open access · greenAbstract read
In one paragraph

Article in Free radical biology & medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 5% 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

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

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  20. Understanding the role of the cytoprotective transcription factor nuclear factor erythroid 2-related factor 2-lessons from evolution, the animal kingdom and rare progeroid syndromes.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2020
    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

9 authors at 3 institutions in 1 country.

Christina LiskDivision of Cardiology, Cardiovascular Pulmonary Research Group, School of Medicine, Aurora, CO 80045, USA.
Joe McCord
Swapan Bose
Tim Sullivan
Zoe Loomis
Eva Nozik-Grayck
Thies Schroeder
Karyn Hamilton
David C Irwin
University of Colorado Denver · USColorado State University · USDuke University · US

Funding

VRAC and Rho in pulmonary EC proliferationP01HL014985 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI STENMARK, KURT R. · 1985 to 2019
$35.1M
Impact of Insufficient Vascular EC-SOD in Pulmonary HypertensionR01HL086680 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI NOZIK, EVA S. · 2008 to 2017
$4.7M
Regulation of extracellular superoxide dismutase in human pulmonary arterial hypeR03HL110783 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI NOZIK, EVA S. · 2011 to 2012
$153k
NHLBI NIH HHS P01 HL014985NHLBI NIH HHS R01 HL086680NHLBI NIH HHS R03 HL110783
6 · The paper itself

Abstract

Reactive oxygen species (ROS) formed during acute high altitude exposure contribute to cerebral vascular leak and development of acute mountain sickness (AMS). Nuclear factor (erythroid-derived 2)-related factor 2 (Nrf2) is a transcription factor that regulates expression of greater than 90% of antioxidant genes, but prophylactic treatment with Nrf2 activators has not yet been tested as an AMS therapy. We hypothesized that prophylactic activation of the antioxidant genome with Nrf2 activators would attenuate high-altitude-induced ROS formation and cerebral vascular leak and that some drugs currently used to treat AMS symptoms have an additional trait of Nrf2 activation. Drugs commonly used to treat AMS were screened with a luciferase reporter cell system for their effectiveness to activate Nrf2, as well as being tested for their ability to decrease high altitude cerebral vascular leak in vivo. Compounds that showed favorable results for Nrf2 activation from our screen and attenuated high altitude cerebral vascular leak in vivo were further tested in brain microvascular endothelial cells (BMECs) to determine if they attenuated hypoxia-induced ROS production and monolayer permeability. Of nine drugs tested, with the exception of dexamethasone, only drugs that showed the ability to activate Nrf2 (Protandim, methazolamide, nifedipine, amlodipine, ambrisentan, and sitaxentan) decreased high-altitude-induced cerebral vascular leak in vivo. In vitro, Nrf2 activation in BMECs before 24h hypoxia exposure attenuated hypoxic-induced hydrogen peroxide production and permeability. Prophylactic Nrf2 activation is effective at reducing brain vascular leak from acute high altitude exposures. Compared to acetazolamide, methazolamide may offer better protection against AMS. Nifedipine, in addition to its known vasodilatory activities in the lung and protection against high altitude pulmonary edema, may provide protection against brain vascular leak as well.

Indexed as

Altitude SicknessAnimalsAntioxidantsCerebellumHumansHypoxiaNF-E2-Related Factor 2RatsReactive Oxygen SpeciesTranscriptional ActivationVasodilator AgentsAntioxidantsNfe2l2 protein, ratNF-E2-Related Factor 2Reactive Oxygen SpeciesVasodilator AgentsCalcium channel blockersCarbon anhydrase inhibitorsCerebralEndothelin receptor antagonistFree radicalsHigh altitude sicknessNrf2Vascular leak

Identifiers

PMID23722164
PMCPMC4130652
OpenAlexW2095008955

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.