Úinek sigma ligandu haloperidolu na pechodný proud z buky v kardiomyocytech potkana

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F05%3A00012547" target="_blank" >RIV/00216224:14110/05:00012547 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Sigma Ligand Haloperidol on Transient Outward Potassium Current in Rat Cardiomyocytes

Popis výsledku v původním jazyce

Sigma receptor ligand haloperidol is a psychotropic drug with severe cardiovascular side effects, particularly ventricular arrhythmias including torsades de pointes. As was documented, haloperidol prolongs the repolarization phase of action potential andthe effective refractory period. However, the effect of haloperidol on repolarizing potassium currents in cardiomyocytes has not been studied so far. Thus, we performed a preliminary analysis of the effect of haloperidol (1ľmol/l) on the transient outward potassium current Ito that plays a significant role in the initial phase of action potential repolarization. The experiments were performed on enzymatically isolated rat ventricular cardiomyocytes using the whole cell patch clamp technique at room temperature. Haloperidol induced a decrease of amplitude and an acceleration of apparent inactivation of Ito. The averaged inhibition of Ito evaluated as a change of its time integral was 31.0 ą 2.5 %. The inhibition as well as the accelerat

Název v anglickém jazyce

Effect of Sigma Ligand Haloperidol on Transient Outward Potassium Current in Rat Cardiomyocytes

Popis výsledku anglicky

Sigma receptor ligand haloperidol is a psychotropic drug with severe cardiovascular side effects, particularly ventricular arrhythmias including torsades de pointes. As was documented, haloperidol prolongs the repolarization phase of action potential andthe effective refractory period. However, the effect of haloperidol on repolarizing potassium currents in cardiomyocytes has not been studied so far. Thus, we performed a preliminary analysis of the effect of haloperidol (1ľmol/l) on the transient outward potassium current Ito that plays a significant role in the initial phase of action potential repolarization. The experiments were performed on enzymatically isolated rat ventricular cardiomyocytes using the whole cell patch clamp technique at room temperature. Haloperidol induced a decrease of amplitude and an acceleration of apparent inactivation of Ito. The averaged inhibition of Ito evaluated as a change of its time integral was 31.0 ą 2.5 %. The inhibition as well as the accelerat

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

ED - Fyziologie

OECD FORD obor

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Projekt

<a href="/cs/project/GA305%2F04%2F1385" target="_blank" >GA305/04/1385: Modulační úloha sigma signalizace na elektromechanické vztahy izolovaného kardiomyocytu a srdce</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Molecular and Cellular Cardiology

ISSN

0022-2828

e-ISSN

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Svazek periodika

39

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

1

Strana od-do

173

Kód UT WoS článku

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EID výsledku v databázi Scopus

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