Evidence map›Paper›PMID 21276184›Full record

ArticleAging cell2011

Nitrite supplementation reverses vascular endothelial dysfunction and large elastic artery stiffness with aging.

Amy L Sindler, Bradley S Fleenor, John W Calvert, Kurt D Marshall, Melanie L Zigler, David J Lefer, Douglas R Seals

Abstract read
In one paragraph

Article in Aging cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed, 1 pooled it
9.7field-weighted citation impact, top 1% 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

118 citing papers in PubMed, 1 synthesis or guideline pooled it, 214 citations in OpenAlex.

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58 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

7 authors at 2 institutions in 1 country.

Amy L SindlerDepartment of Integrative Physiology, University of Colorado, Boulder, USA. amy.sindler@colorado.edu
Bradley S Fleenor
John W Calvert
Kurt D Marshall
Melanie L Zigler
David J Lefer
Douglas R Seals
University of Colorado Boulder · USEmory University · US

Funding

University of Colorado Aging Training GrantT32AG000279 · NIA · UNIVERSITY OF COLORADO DENVER · PI Kerrie Moreau · 2001 to 2026
$10.1M
POSTGRADUATE TRAINING IN CARDIOVASCULAR RESEARCHT32HL007822 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI BUTTRICK, PETER N., LEINWAND, LESLIE ANNE · 1996 to 2023
$6.2M
SODIUM RESTRICTION &ARTERIAL COMPLIANCE IN OLDER HUMANSR01AG013038 · NIA · UNIVERSITY OF COLORADO AT BOULDER · PI SEALS, DOUGLAS R · 1996 to 2018
$4.0M
Human Aging, Exercise &FMD: Translational PhysiologyR37AG013038 · NIA · UNIVERSITY OF COLORADO AT BOULDER · PI SEALS, DOUGLAS R · 2004 to 2013
$3.0M
Cardioprotective Actions of Hydrogen SulfideR01HL092141 · NHLBI · LSU HEALTH SCIENCES CENTER · PI LEFER, DAVID JOSEPH · 2009 to 2013
$1.9M
Hydrogen sulfide attenuates heart failure through Nrf2-mediated signalingR01HL098481 · NHLBI · EMORY UNIVERSITY · PI CALVERT, JOHN WINTER · 2010 to 2014
$1.9M
Nitrite Mediated CardioprotectionR01HL093579 · NHLBI · LSU HEALTH SCIENCES CENTER · PI LEFER, DAVID JOSEPH · 2009 to 2012
$1.5M
NHLBI NIH HHS HL007822NHLBI NIH HHS HL092141NHLBI NIH HHS HL093579NHLBI NIH HHS R01 HL092141NHLBI NIH HHS R01 HL093579NHLBI NIH HHS R01 HL098481NHLBI NIH HHS T32 HL007822NIA NIH HHS AG000279NIA NIH HHS AG013038,NIA NIH HHS R01 AG013038NIA NIH HHS R37 AG013038NIA NIH HHS T32 AG000279
6 · The paper itself

Abstract

We tested the hypothesis that short-term nitrite therapy reverses vascular endothelial dysfunction and large elastic artery stiffening with aging, and reduces arterial oxidative stress and inflammation. Nitrite concentrations were lower (P < 0.05) in arteries, heart, and plasma of old (26-28 month) male C57BL6 control mice, and 3 weeks of sodium nitrite (50 mg L(-1) in drinking water) restored nitrite levels to or above young (4-6 month) controls. Isolated carotid arteries of old control mice had lower acetylcholine (ACh)-induced endothelium-dependent dilation (EDD) (71.7 ± 6.1% vs. 93.0 ± 2.0%) mediated by reduced nitric oxide (NO) bioavailability (P < 0.05 vs. young), and sodium nitrite restored EDD (95.5 ± 1.6%) by increasing NO bioavailability. 4-Hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPOL), a superoxide dismutase (SOD) mimetic, apocynin, a nicotinamide adenine dinucleotide phosphate-oxidase (NADPH) inhibitor, and sepiapterin (exogenous tetrahydrobiopterin) each restored EDD to ACh in old control, but had no effect in old nitrite-supplemented mice. Old control mice had increased aortic pulse wave velocity (478 ± 16 vs. 332 ± 12 AU, P < 0.05 vs. young), which nitrite supplementation lowered (384 ± 27 AU). Nitrotyrosine, superoxide production, and expression of NADPH oxidase were ∼100-300% greater and SOD activity was ∼50% lower in old control mice (all P < 0.05 vs. young), but were ameliorated by sodium nitrite treatment. Inflammatory cytokines were markedly increased in old control mice (P < 0.05), but reduced to levels of young controls with nitrite supplementation. Short-term nitrite therapy reverses age-associated vascular endothelial dysfunction, large elastic artery stiffness, oxidative stress, and inflammation. Sodium nitrite may be a novel therapy for treating arterial aging in humans.

Indexed as

AgingAcetophenonesAcetylcholineAdministration, OralAnimalsBiopterinsCarotid ArteriesCyclic N-OxidesCytokinesElasticityEndothelium, VascularHumansMaleMiceMyographyNADPH OxidasesAcetophenonesacetovanilloneAcetylcholineBiopterinsCyclic N-OxidesCytokinesNADPH OxidasesNitric OxidesapropterinSodium NitriteSpin LabelsSuperoxide DismutasetempolVasodilator Agents

Identifiers

PMID21276184
PMCPMC3094511
OpenAlexW1559904992

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.