All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

Effect of Sigma Ligand Haloperidol on Cardiac Excitability

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F04%3A00011578" target="_blank" >RIV/00216224:14110/04:00011578 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effect of Sigma Ligand Haloperidol on Cardiac Excitability

  • Original language description

    Sigma receptor ligand haloperidol is a psychotropic drug used in the treatment of various psychiatric disorders. Severe cardiovascular side effects (mostly ventricular arrhythmias) have been often reported as a consequence of this treatment. Thus, we have investigated the effects of 10 ľM haloperidol on cardiac ionic currents in two models freshly isolated rat ventricular cardiomyocytes and in HEK 293 cells with transiently expressed CaV1.2 L-type calcium channel. Gene expression of sigma receptors in both models was measured by RT-PCR. Primers were designed from sequence of sigma receptors (for rat -Genbank number 38541100, for human Genbank number 22212933) and amplified 185bp fragment in the position 499 - 684 nt. The whole cell patch-clamp method has been employed to assess the effect of haloperidol on sodium, potassium and calcium currents. In rat cardiac cells, haloperidol inhibited 95% of INa activated by 40 ms voltage pulses from 75 mV to 20 mV. The inhibition of Ito and IK,end

  • Czech name

    Účinek sigma ligandu haloperidolu na srdeční excitabilitu

  • Czech description

    Sigma receptor ligand haloperidol je psychotropní látka užívaná v léčbě různých psychiatrických onemocnění. Byly popsány těžké vedlejší účinky na kardiovaskulární systém (hlavně komorové arythmie). zkoumali jsme účinek 10 microM haloperidolu na srdeční iontové proudy u dvou modelů -izolovaných kardiomyocytů potkana a HEK293 buněk s přechodně exprimovaným CaV1.2 L-typem kalciového kanálu. Exprese sigma receptorů v obou modelech byla měřena RT-PCR. Primery were získány ze sekvence sigma receptorů (potkan-Genbank number 38541100, lidské-Genbank number 22212933) a amplifikovány 185bp fragmentem v pozici 499 - 684 nt. Metodou whole cell patch-clamp jsme zjišťovali účinek haloperidolu na sodíková, draslíkové a kalciový proudy. V kardiomyocytech potkana haloperidol inhiboval 95% INa aktivovaného 40 ms napěťovými pulzy z 75 mV do 20 mV. Inhibice Ito a IK,end byla měřena 300 ms napěťovými pulzy z 75 mV do +40 mV. Byla pozorována 80% inhibice Ito a 37% inhibice IK,end, vždy reverzibilní. Inaktiv

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    ED - Physiology

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA305%2F04%2F1385" target="_blank" >GA305/04/1385: Modulatory role of sigma signalling in electromechanical coupling of isolated cardiomyocyte and heart</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2004

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    New Frontiers in Basic Cardiovascular Research

  • ISBN

  • ISSN

  • e-ISSN

  • Number of pages

    1

  • Pages from-to

    33

  • Publisher name

    INSERM

  • Place of publication

    Montpellier, Francie

  • Event location

    La Grande-Motte

  • Event date

    Sep 24, 2004

  • Type of event by nationality

    EUR - Evropská akce

  • UT code for WoS article