Evidence map›Paper›PMID 19855062›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2010

A mathematical model of vasoreactivity in rat mesenteric arterioles. II. Conducted vasoreactivity.

Adam Kapela, Sridevi Nagaraja, Nikolaos M Tsoukias

Abstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.0field-weighted citation impact, top 15% 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

25 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. The capillary Kir channel as sensor and amplifier of neuronal signals: Modeling insights on KProceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  7. Overview of mathematical modeling of myocardial blood flow regulation.American journal of physiology. Heart and circulatory physiology · 2020
    Review
  8. Article
  9. Article
  10. KJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Article
  11. Can endothelial hemoglobin-α regulate nitric oxide vasodilatory signaling?American journal of physiology. Heart and circulatory physiology · 2017
    Article
  12. Article
  13. Article
  14. Origins of variation in conducted vasomotor responses.Pflugers Archiv : European journal of physiology · 2015
    Article
  15. Article
  16. Conducted vasoreactivity: the dynamical point of view.Bulletin of mathematical biology · 2015
    Article
  17. Review
  18. Article
  19. Article
  20. Article
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 1 institution in 1 country.

Adam KapelaDepartment of Biomedical Engineering, Florida International University, Miami, FL 33174, USA.
Sridevi Nagaraja
Nikolaos M Tsoukias
Florida International University · US

Funding

Theorectal and Experimental Investigations of Microcirculatory SignalingSC1HL095101 · NHLBI · FLORIDA INTERNATIONAL UNIVERSITY · PI TSOUKIAS, NIKOLAOS MICHAEL · 2008 to 2012
$1.4M
NHLBI NIH HHS SC1 HL095101NHLBI NIH HHS SC1HL095101
6 · The paper itself

Abstract

This study presents a multicellular computational model of a rat mesenteric arteriole to investigate the signal transduction mechanisms involved in the generation of conducted vasoreactivity. The model comprises detailed descriptions of endothelial (ECs) and smooth muscle (SM) cells (SMCs), coupled by nonselective gap junctions. With strong myoendothelial coupling, local agonist stimulation of the EC or SM layer causes local changes in membrane potential (V(m)) that are conducted electrotonically, primarily through the endothelium. When myoendothelial coupling is weak, signals initiated in the SM conduct poorly, but the sensitivity of the SMCs to current injection and agonist stimulation increases. Thus physiological transmembrane currents can induce different levels of local V(m) change, depending on cell's gap junction connectivity. The physiological relevance of current and voltage clamp stimulations in intact vessels is discussed. Focal agonist stimulation of the endothelium reduces cytosolic calcium (intracellular Ca(2+) concentration) in the prestimulated SM layer. This SMC Ca(2+) reduction is attributed to a spread of EC hyperpolarization via gap junctions. Inositol (1,4,5)-trisphosphate, but not Ca(2+), diffusion through homocellular gap junctions can increase intracellular Ca(2+) concentration in neighboring ECs. The small endothelial Ca(2+) spread can amplify the total current generated at the local site by the ECs and through the nitric oxide pathway, by the SMCs, and thus reduces the number of stimulated cells required to induce distant responses. The distance of the electrotonic and Ca(2+) spread depends on the magnitude of SM prestimulation and the number of SM layers. Model results are consistent with experimental data for vasoreactivity in rat mesenteric resistance arteries.

Indexed as

AcetylcholineAlgorithmsAnimalsArteriolesCalcium SignalingCell MembraneComputer SimulationElectric StimulationGap JunctionsKineticsMesenteric ArteriesModels, StatisticalMuscle ContractionNorepinephrinePatch-Clamp TechniquesRatsAcetylcholineNorepinephrineVasoconstrictor AgentsVasodilator Agents

Identifiers

PMID19855062
PMCPMC2806131
OpenAlexW2000665249

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.