Evidence map›Paper›PMID 23774225›Full record

ArticleHypertension (Dallas, Tex. : 1979)2013

Does brachial artery flow-mediated vasodilation provide a bioassay for NO?

D Walter Wray, Melissa A H Witman, Stephen J Ives, John McDaniel, Joel D Trinity, Jamie D Conklin, Mark A Supiano, Russell S Richardson

Open access · bronzeAbstract read
In one paragraph

Article in Hypertension (Dallas, Tex. : 1979), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
4.2field-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

46 citing papers in PubMed, 65 citations in OpenAlex.

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  11. Obesity does not alter vascular function and handgrip exercise hemodynamics in middle-aged patients with hypertension.American journal of physiology. Regulatory, integrative and comparative physiology · 2024
    Article
  12. The damaging duo: Obesity and excess dietary salt contribute to hypertension and cardiovascular disease.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2023
    Review
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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 1 institution in 1 country.

D Walter WrayDivision of Geriatrics, Department of Internal Medicine, University of Utah, VAMC SLC, GRECC 182, Bldg 2 Rm 1C03, 500 Foothill Dr, Salt Lake City, UT 84148, USA. walter.wray@hsc.utah.edu
Melissa A H Witman
Stephen J Ives
John McDaniel
Joel D Trinity
Jamie D Conklin
Mark A Supiano
Russell S Richardson
Geriatric Research Education and Clinical Center · US

Funding

Tissue Imaging, Biochemistry and MorphologyP01HL091830 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HOGAN, MICHAEL C · 2009 to 2013
$10.1M
NHLBI NIH HHS P01 HL-091830NHLBI NIH HHS P01 HL091830
6 · The paper itself

Abstract

This study sought to better define the role of NO in brachial artery flow-mediated vasodilation (FMD) in young, healthy humans. Brachial artery blood velocity and diameter were determined (ultrasound Doppler) in 8 volunteers (26 ± 1 year) before and after 5-minute forearm circulatory occlusion with and without intra-arterial infusion of the endothelial NO synthase inhibitor N(G)-monomethyl-L-arginine (L-NMMA; 0.48 mg/dL per minute). Control (CON) and L-NMMA trials were performed with the occlusion cuff placed in the traditional distal position, as well as proximal to the measurement site. FMD was significantly reduced, but not abolished, by L-NMMA in the distal cuff trial (8.9 ± 1.3%-6.0 ± 0.7%, CON versus L-NMMA; P=0.02), with no effect of L-NMMA on FMD with proximal cuff placement (10.6 ± 1.2%-12.4 ± 1.7%, CON versus L-NMMA; P=0.39). When the reduction in shear stimulus after L-NMMA was taken into account, no drug difference was observed for either distal (0.26 ± 0.02-0.23 ± 0.03, CON versus L-NMMA; P=0.40) or proximal (0.23 ± 0.08-0.23 ± 0.03, CON versus L-NMMA; P=0.89) FMD trials. These findings challenge the assertion that NO is obligatory for brachial artery FMD and call into question the sensitivity of this procedure for noninvasive determination of NO bioavailability in young, healthy humans.

Indexed as

VasodilationAdultBiological AssayBrachial ArteryFemaleHumansMaleNitric Oxideomega-N-MethylarginineRegional Blood FlowNitric Oxideomega-N-Methylarginineendotheliumnitric oxideultrasonography, Dopplervasodilation

Identifiers

PMID23774225
PMCPMC3775568
OpenAlexW2105576032

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.