Evidence map›Paper›PMID 18689501›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2008

Theoretical model of metabolic blood flow regulation: roles of ATP release by red blood cells and conducted responses.

Julia C Arciero, Brian E Carlson, Timothy W Secomb

Open access · greenAbstract readComparative Study
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed
4.5field-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

65 citing papers in PubMed, 134 citations in OpenAlex.

  1. Article
  2. Red Blood Cell Membrane Mechanics Using Discrete Exterior Calculus (DEC) and Optimization.International journal for numerical methods in biomedical engineering · 2026
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5 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

3 authors at 2 institutions in 1 country.

Julia C ArcieroProgram in Applied Mathematics, University of Arizona, Tucson, Arizona 85724-5051, USA.
Brian E Carlson
Timothy W Secomb
University of Arizona · USMedical College of Wisconsin · US

Funding

Bioengineering Cardiovascular Training GrantT32EB001650 · NIBIB · UNIVERSITY OF WASHINGTON · PI REGNIER, MICHAEL · 2004 to 2019
$3.6M
Flow regulation and Oxygen transpot in microcirculationR01HL070657 · NHLBI · UNIVERSITY OF ARIZONA · PI SECOMB, TIMOTHY W. · 2002 to 2014
$2.0M
NHLBI NIH HHS HL-070657NHLBI NIH HHS R01 HL070657NIBIB NIH HHS T32-EB-001650
6 · The paper itself

Abstract

A proposed mechanism for metabolic flow regulation involves the saturation-dependent release of ATP by red blood cells, which triggers an upstream conducted response signal and arteriolar vasodilation. To analyze this mechanism, a theoretical model is used to simulate the variation of oxygen and ATP levels along a flow pathway of seven representative segments, including two vasoactive arteriolar segments. The conducted response signal is defined by integrating the ATP concentration along the vascular pathway, assuming exponential decay of the signal in the upstream direction with a length constant of approximately 1 cm. Arteriolar tone depends on the conducted metabolic signal and on local wall shear stress and wall tension. Arteriolar diameters are calculated based on vascular smooth muscle mechanics. The model predicts that conducted responses stimulated by ATP release in venules and propagated to arterioles can account for increases in perfusion in response to increased oxygen demand that are consistent with experimental findings at low to moderate oxygen consumption rates. Myogenic and shear-dependent responses are found to act in opposition to this mechanism of metabolic flow regulation.

Indexed as

HemodynamicsModels, CardiovascularAdenosine TriphosphateAnimalsArteriolesBlood Flow VelocityComputer SimulationDogsErythrocytesExerciseHemorheologyHomeostasisHumansMicrocirculationMuscle, Smooth, VascularOxygenAdenosine TriphosphateOxygen

Identifiers

PMID18689501
PMCPMC2593502
OpenAlexW2120016695

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.