Abstract
| Original language | English |
|---|---|
| Title of host publication | Computers in Cardiology, 2003 |
| Editors | Alan Murray |
| Place of Publication | Piscataway, NJ |
| Publisher | IEEE |
| Pages | 777-780 |
| Number of pages | 4 |
| Volume | 30 |
| ISBN (Print) | 078038170X |
| DOIs | |
| State | Published - Sep 2003 |
| Event | Computers in Cardiology - Thessaloniki, Greece |
Conference
| Conference | Computers in Cardiology |
|---|---|
| Abbreviated title | CinC |
| Country | Greece |
| City | Thessaloniki |
| Period | 21/09/03 → 24/09/03 |
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Cellular modelling of electrical remodelling in two different models of human atrial myocytes. / Zhang, H.; Zhu, Jiujiang; Garratt, C. J.; Holden, A. V.
Computers in Cardiology, 2003. ed. / Alan Murray. Vol. 30 Piscataway, NJ : IEEE , 2003. p. 777-780.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - CHAP
T1 - Cellular modelling of electrical remodelling in two different models of human atrial myocytes
AU - Zhang,H.
AU - Zhu,Jiujiang
AU - Garratt,C. J.
AU - Holden,A. V.
PY - 2003/9
Y1 - 2003/9
N2 - Changes in action potentials of atrial myocytes and various ionic channels induced by chronic atrial fibrillation (AF) have been described in the human. The mechanisms underlying the AF-induced action potential duration (APD) shortening have not been clearly identified. In this study we modify two different computational models of electrical activity of human atrial myocytes by incorporating chronic AF induced changes in several of the ionic channels systems found in myocytes. We examine the ionic mechanisms underlying the AF induced APD reduction and the relative roles of different remodeled ionic channels in producing the APD reduction. In both models we have found that AF induced changes in the ionic channel conductances and kinetics are able to reproduce the APD reduction seen experimentally. AF-induced down regulation of L-type Ca current is insufficient to account for the observed APD reduction, but up regulation of IKl has a much greater influence.
AB - Changes in action potentials of atrial myocytes and various ionic channels induced by chronic atrial fibrillation (AF) have been described in the human. The mechanisms underlying the AF-induced action potential duration (APD) shortening have not been clearly identified. In this study we modify two different computational models of electrical activity of human atrial myocytes by incorporating chronic AF induced changes in several of the ionic channels systems found in myocytes. We examine the ionic mechanisms underlying the AF induced APD reduction and the relative roles of different remodeled ionic channels in producing the APD reduction. In both models we have found that AF induced changes in the ionic channel conductances and kinetics are able to reproduce the APD reduction seen experimentally. AF-induced down regulation of L-type Ca current is insufficient to account for the observed APD reduction, but up regulation of IKl has a much greater influence.
U2 - 10.1109/CIC.2003.1291272
DO - 10.1109/CIC.2003.1291272
M3 - Conference contribution
SN - 078038170X
VL - 30
SP - 777
EP - 780
BT - Computers in Cardiology, 2003
PB - IEEE
ER -