Haloperidol moderately inhibits cardiovascular L-type calcium current

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F09%3A00037292" target="_blank" >RIV/00216224:14110/09:00037292 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Haloperidol moderately inhibits cardiovascular L-type calcium current
Original language description
Effects of haloperidol on L-type CaV1.2 channel were studied. Calcium current was measured in whole cell patch-clamp using calcium as a charge carrier. Inhibition by haloperidol was investigated in CaV1.2 channel natively expressed in rat cardiac myocytes and recombinant cardiac (CaV1.2a) and vascular (CaV1.2b) splice variants of the channel expressed in HEK 293 cells. Haloperidol inhibited L-type calcium current in a concentration-dependent manner with a threshold of 1 nmol/l. Inhibition was not accompanied by alteration of current waveform or by shift of current-voltage relation. In a current clamp haloperidol suppressed action potential generation. 1 micromol/l of the drug shortened the action potential duration in part of the cells and suppressed fully action potential in other cells. Moderate inhibition of the L-type calcium channels by haloperidol might cause shortening of action potential.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
ED - Physiology
OECD FORD branch
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Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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