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Description
| - In this work, we studied the role of the transverse-axial tubular system (TAT-system) in arrythmogenesis of ventricular cardiac cells under conditions of simulated hypokalaemia (low [K]e). We used the model of a mammalian ventricular myocyte that integrated the quantitative description of electrical activity of surface and tubular membranes and dynamic changes in intracellular ion concentrations. To maintain potassium homeostasis, an energy-dependent K+ extrusion pump was incorporated into the model. According to predictions provided by the model, the TAT-system protects the cell against arrhythmogenesis due to the enhancement of a potassium concentration gradient between tubular and extracellular spaces at low levels of [K]e. The energy-dependent K extrusion pump maintains tubular [K] at a level higher than the overall [K]e. This makes the activation of tubular K-conductances responsible for action potential repolarisation and resting voltage.
- In this work, we studied the role of the transverse-axial tubular system (TAT-system) in arrythmogenesis of ventricular cardiac cells under conditions of simulated hypokalaemia (low [K]e). We used the model of a mammalian ventricular myocyte that integrated the quantitative description of electrical activity of surface and tubular membranes and dynamic changes in intracellular ion concentrations. To maintain potassium homeostasis, an energy-dependent K+ extrusion pump was incorporated into the model. According to predictions provided by the model, the TAT-system protects the cell against arrhythmogenesis due to the enhancement of a potassium concentration gradient between tubular and extracellular spaces at low levels of [K]e. The energy-dependent K extrusion pump maintains tubular [K] at a level higher than the overall [K]e. This makes the activation of tubular K-conductances responsible for action potential repolarisation and resting voltage. (en)
- In this work, we studied the role of the transverse-axial tubular system (TAT-system) in arrythmogenesis of ventricular cardiac cells under conditions of simulated hypokalaemia (low [K]e). We used the model of a mammalian ventricular myocyte that integrated the quantitative description of electrical activity of surface and tubular membranes and dynamic changes in intracellular ion concentrations. To maintain potassium homeostasis, an energy-dependent K+ extrusion pump was incorporated into the model. According to predictions provided by the model, the TAT-system protects the cell against arrhythmogenesis due to the enhancement of a potassium concentration gradient between tubular and extracellular spaces at low levels of [K]e. The energy-dependent K extrusion pump maintains tubular [K] at a level higher than the overall [K]e. This makes the activation of tubular K-conductances responsible for action potential repolarisation and resting voltage. (cs)
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Title
| - Arrhythmogenic effect of extracellular K-depletion is prevented by the transverse-axial tubular system in a ventricular cardiac cell model
- Arrhythmogenic effect of extracellular K-depletion is prevented by the transverse-axial tubular system in a ventricular cardiac cell model (en)
- Arrhythmogenic effect of extracellular K-depletion is prevented by the transverse-axial tubular system in a ventricular cardiac cell model (cs)
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skos:prefLabel
| - Arrhythmogenic effect of extracellular K-depletion is prevented by the transverse-axial tubular system in a ventricular cardiac cell model
- Arrhythmogenic effect of extracellular K-depletion is prevented by the transverse-axial tubular system in a ventricular cardiac cell model (en)
- Arrhythmogenic effect of extracellular K-depletion is prevented by the transverse-axial tubular system in a ventricular cardiac cell model (cs)
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skos:notation
| - RIV/00216224:14110/02:00007136!RIV08-MSM-14110___
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GP204/02/D129), Z(AV0Z2076919), Z(MSM 141100004)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/00216224:14110/02:00007136
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - ventricular cell; low external [K]; tubular system; quantitative modelling (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Scripta Medica Fac.Med.Univ.Masaryk.Brun.
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Pásek, Michal
- Šimurda, Jiří
- Christé, Georges
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http://linked.open...n/vavai/riv/zamer
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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