A Quantitative Model of the Cardiac Ventricular Cell Incorporating the Transverse-Axial Tubular System

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F03%3A00009574" target="_blank" >RIV/00216224:14110/03:00009574 - isvavai.cz</a>

Alternative codes found

RIV/61388998:_____/03:51030229 RIV/00216224:14110/03:00008675

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

A Quantitative Model of the Cardiac Ventricular Cell Incorporating the Transverse-Axial Tubular System

Original language description

The role of the transverse-axial tubular system (TATS) in electrical activity of cardiac cells has not been investigated quantitatively. In this study a mathematical model including the TATS and differential distribution of ionic transfer mechanisms in peripheral and tubular membranes was described. A model of ventricular cardiac cell described by Jafri et al. (1998) was adopted and slightly modified to describe ionic currents and Ca2+ handling. Changes of concentrations in the lumen of the TATS were computed from the total of transmembrane ionic fluxes and ionic exchanges with the pericellular medium. Long-term stability of the model was attained at rest and under regular stimulation. Depletion of Ca2+ by 12.8 % and accumulation of K+ by 4.7 % occurred in the TATS-lumen at physiological conditions and at a stimulation frequency of 1 Hz. The changes were transient and subsided on repolarization within 800 ms (Ca2+) and 300 ms (K+). Nevertheless, the course of action potentials remained

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BO - Biophysics

OECD FORD branch

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Project

<a href="/en/project/GP204%2F02%2FD129" target="_blank" >GP204/02/D129: Quantitative analysis of effect of tubular system on electrical activity of cardiac cells</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

General Physiology and Biophysics

ISSN

0231-5882

e-ISSN

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Volume of the periodical

22

Issue of the periodical within the volume

3

Country of publishing house

SK - SLOVAKIA

Number of pages

14

Pages from-to

355-368

UT code for WoS article

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EID of the result in the Scopus database

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