Excitation induced spatial and temporal changes of [Ca2+] in cardiac t-tubules
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F07%3A00023563" target="_blank" >RIV/00216224:14110/07:00023563 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Excitation induced spatial and temporal changes of [Ca2+] in cardiac t-tubules
Original language description
Majority of L-type calcium channels in ventricular cardiomyocytes are located in transverse-axial tubular system (TATS) membrane, where they are inhomogenously distributed in clusters within dyads. The aim of numeric computations (software MATLAB, version 6) was to evaluate the effect of tubular Ca2+ buffering and of inhomogeneity in Ca channel distribution on [Ca2+]t distribution. We conclude that the observation of slower velocity of Ca2+ diffusion along TATS lumen related to expected velocity considering diffusion coefficient of bulk extracellular medium) can be explained at least partly by Ca binding within TATS. The inhomogeneities in Ca2+-channel distribution in TATS due to clustering within dyads has little effect on spatial and temporal changesin [Ca2+]t induced by excitations.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
ED - Physiology
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů