PÁSEK, Michal, Georges CHRISTÉ and Jiří ŠIMURDA. Ionic concentration changes in the tubular system of rat ventricular cardiac cell model. In Engineering Mechanics 2004. Svratka: Institute of Thermomechanics, Academy of Sciences of the Czech Republic, 2004, p. 1-9. ISBN 80-85918-88-9.
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Basic information
Original name Ionic concentration changes in the tubular system of rat ventricular cardiac cell model
Name in Czech Iontově-koncetrační změny v tubulárním systému modelu komorové buňky potkana
Authors PÁSEK, Michal (203 Czech Republic, guarantor), Georges CHRISTÉ (250 France) and Jiří ŠIMURDA (203 Czech Republic).
Edition Svratka, Engineering Mechanics 2004, p. 1-9, 9 pp. 2004.
Publisher Institute of Thermomechanics, Academy of Sciences of the Czech Republic
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10610 Biophysics
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14110/04:00010869
Organization unit Faculty of Medicine
ISBN 80-85918-88-9
Keywords in English cardiac cell; tubular system; quantitative modelling
Tags Cardiac cell, Quantitative modelling, tubular system
Changed by Changed by: doc. Ing. Michal Pásek, Ph.D., učo 46541. Changed: 26/1/2005 17:53.
Abstract
We present a design of a model of rat ventricular cardiomyocyte with transverse-axial tubular system and the results of the first simulations of tubular ionic concentration changes at different stimulation rates. The morphology of tubular system and the distribution of ionic channels in tubular membrane were described to meet the recent data of Soeller and Cannell (1999) and of Orchard's group in Leeds. Exploration of activity-dependent changes in tubular ionic concentrations revealed an increase in relative Ca2+ depletion from 7.3 % to 14 % when increasing the stimulation frequency from 1 Hz to 5 Hz. Meanwhile, relative K+ accumulation decreased from 4.3 % to 3 %. These effects led to a limitation of intracellular Ca2+ overload.
Abstract (in Czech)
Práce prezentuje sestavení matematického modelu komorové buňky laboratorního potkana se zahrnutým popisem funkce transverzálně - axiálního tubulárního systému a představuje výsledky simulací odhalující velikost iontově-koncentračních změn uvnitř tubulárního systému potkana.
Links
AV0Z2076919, plan (intention)Name: Dynamika tekutin, těles a jejich interakce
GP204/02/D129, research and development projectName: Kvantitativní analýza vlivu tubulárního systému na elektrickou aktivitu srdečních buněk
Investor: Czech Science Foundation, Quantitative analysis of effect of tubular system on electrical activity of cardiac cells
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