Evidence map›Paper›PMID 16973706›Full record

ArticleThe Journal of physiology2006

Exercise-induced inhibition of angiotensin II vasoconstriction in human thigh muscle.

R Matthew Brothers, Mads L Haslund, D Walter Wray, Peter B Raven, Mikael Sander

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 8% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Impaired modulation of postjunctional αThe Journal of physiology · 2018
    Trial
  3. Review
  4. Review
  5. Article
  6. Muscle wasting: A review of exercise, classical and non-classical RAS axes.Journal of cellular and molecular medicine · 2019
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Thin-beam ultrasound overestimation of blood flow: how wide is your beam?Journal of applied physiology (Bethesda, Md. : 1985) · 2014
    Article
  13. Article
  14. Article
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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

5 authors at 1 institution in 1 country.

R Matthew BrothersDepartment of Integrative Physiology, University of North Texas Health Science Center, Fort Worth, TX 76107, USA, and Copenhagen Muscle Research Centre, Department of Cardiology, National Hospital, Blegdamsvej 9, DK-2100 Copenhagen O, Denmark.
Mads L Haslund
D Walter Wray
Peter B Raven
Mikael Sander
University of North Texas · US

Funding

ARTERIAL BAROREFLEX CONTROL OF BLOOD PRESSURE-- EXERCISER01HL045547 · NHLBI · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI RAVEN, PETER BERNARD · 1994 to 2006
$2.3M
NHLBI NIH HHS HL045547NHLBI NIH HHS R01 HL045547
6 · The paper itself

Abstract

It is well established that metabolic inhibition of adrenergic vasoconstriction contributes to the maintenance of adequate perfusion to exercising skeletal muscle. However, little is known regarding nonadrenergic vasoconstriction during exercise. We tested the hypothesis that a non-adrenergic vasoconstrictor, angiotensin II (AngII), would be less sensitive to metabolic inhibition than an alpha1-agonist, phenylephrine (PE), in the exercising human thigh. In 11 healthy men, femoral blood flow (FBF, ultrasound Doppler and thermodilution) and blood pressure were evaluated during wide-ranging doses of intra-arterial (femoral) infusions of PE and AngII at rest and during two workloads of steady-state knee-extensor exercise (7 W and 27 W). At rest, the maximal decrease in femoral artery diameter (FAD) during AngII (9.0+/-0.2 to 8.4+/-0.4 mm) was markedly less than during PE (9.0+/-0.3 to 5.7+/-0.5 mm), whereas maximal reductions in FBF and femoral vascular conductance (FVC) were similar during AngII (FBF: -65+/-6 and FVC: -66+/-6%) and PE (-57+/-5 and -59+/-4%). During exercise, FAD was not changed by AngII, but moderately decreased by PE. The maximal reductions in FBF and FVC were blunted during exercise compared to rest for both AngII (7 W: -28+/-5 and -40+/-5%; 27 W: -15+/-4% and -29+/-5%) and PE (7 W: -30+/-4 and -37+/-6%; 27 W: -15+/-2 and -24+/-6%), with no significant differences between drugs. The major new findings are (1) an exercise-induced intensity-dependent metabolic attenuation of non-adrenergic vasoconstriction in the human leg; and (2) functional evidence that AngII-vasoconstriction is predominantly distal, whereas alpha1-vasoconstriction is proximal and distal within the muscle vascular bed of the human thigh.

Indexed as

Adrenergic alpha-AgonistsAdultAngiotensin IIBlood Flow VelocityBlood PressureDose-Response Relationship, DrugExerciseFemoral ArteryHeart RateHumansMaleMuscle, SkeletalPhenylephrineReference ValuesRegional Blood FlowThighAdrenergic alpha-AgonistsAngiotensin IIPhenylephrineVasoconstrictor Agents

Identifiers

PMID16973706
PMCPMC1890428
OpenAlexW1555216729

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.