Influence of Ischemia and Reperfusion Duration on Left Ventricular Depolarization in Isolated Rabbit Hearts Registered by Optical Method
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F09%3A00029527" target="_blank" >RIV/00216224:14110/09:00029527 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Influence of Ischemia and Reperfusion Duration on Left Ventricular Depolarization in Isolated Rabbit Hearts Registered by Optical Method
Popis výsledku v původním jazyce
The influence of ischemia and reperfusion duration on left ventricular depolarization is studied from electrograms (ECG) and monophasic action potentials (MAPs). Three orthogonal ECG signals and MAPs are recorded simultaneously during ischemia in isolated rabbit hearts perfused according to Langendorff. MAPs are recorded by optical method via fluorescence measurement from the heart surface at appointed place. The principle of optical measurement of MAP is an application of voltage-sensitive dye (VSD), di-4-ANEPPS in our experimental set-up, into the heart tissue. Optical signal therefore depends on cardiac action potential. The ratiometric fluorescence method, based on emitted light detection by a segment narrow-band photodiode at two different wavelengths, is used. MAPs are recorded with high signal-to-noise ratio and at 2kHz sampling frequency.
Název v anglickém jazyce
Influence of Ischemia and Reperfusion Duration on Left Ventricular Depolarization in Isolated Rabbit Hearts Registered by Optical Method
Popis výsledku anglicky
The influence of ischemia and reperfusion duration on left ventricular depolarization is studied from electrograms (ECG) and monophasic action potentials (MAPs). Three orthogonal ECG signals and MAPs are recorded simultaneously during ischemia in isolated rabbit hearts perfused according to Langendorff. MAPs are recorded by optical method via fluorescence measurement from the heart surface at appointed place. The principle of optical measurement of MAP is an application of voltage-sensitive dye (VSD), di-4-ANEPPS in our experimental set-up, into the heart tissue. Optical signal therefore depends on cardiac action potential. The ratiometric fluorescence method, based on emitted light detection by a segment narrow-band photodiode at two different wavelengths, is used. MAPs are recorded with high signal-to-noise ratio and at 2kHz sampling frequency.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
ED - Fyziologie
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/GA102%2F07%2F1473" target="_blank" >GA102/07/1473: Optické metody registrace elektrických potenciálů a koncentrace vápníku v srdci s laserovou stabilizací</a><br>
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2009
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů