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Kalkan, S.; Oransay, K.; Bal, I. B.; Ertunc, M.; Sara, Y.; Iskit, A. B.
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd"> <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/12335</identifier> <creators> <creator> <creatorName>Kalkan, S.</creatorName> <givenName>S.</givenName> <familyName>Kalkan</familyName> <affiliation>Dokuz Eylul Univ, Dept Pharmacol, Sch Med, TR-35340 Izmir, Turkey</affiliation> </creator> <creator> <creatorName>Oransay, K.</creatorName> <givenName>K.</givenName> <familyName>Oransay</familyName> <affiliation>Dokuz Eylul Univ, Dept Pharmacol, Sch Med, TR-35340 Izmir, Turkey</affiliation> </creator> <creator> <creatorName>Bal, I. B.</creatorName> <givenName>I. B.</givenName> <familyName>Bal</familyName> <affiliation>Hacettepe Univ, Dept Pharmacol, Fac Med, Ankara, Turkey</affiliation> </creator> <creator> <creatorName>Ertunc, M.</creatorName> <givenName>M.</givenName> <familyName>Ertunc</familyName> <affiliation>Hacettepe Univ, Dept Pharmacol, Fac Med, Ankara, Turkey</affiliation> </creator> <creator> <creatorName>Sara, Y.</creatorName> <givenName>Y.</givenName> <familyName>Sara</familyName> <affiliation>Hacettepe Univ, Dept Pharmacol, Fac Med, Ankara, Turkey</affiliation> </creator> <creator> <creatorName>Iskit, A. B.</creatorName> <givenName>A. B.</givenName> <familyName>Iskit</familyName> <affiliation>Hacettepe Univ, Dept Pharmacol, Fac Med, Ankara, Turkey</affiliation> </creator> </creators> <titles> <title>The Role Of Adenosine Receptors On Amitriptyline-Induced Electrophysiological Changes On Rat Atrium</title> </titles> <publisher>Aperta</publisher> <publicationYear>2013</publicationYear> <dates> <date dateType="Issued">2013-01-01</date> </dates> <resourceType resourceTypeGeneral="Text">Journal article</resourceType> <alternateIdentifiers> <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/12335</alternateIdentifier> </alternateIdentifiers> <relatedIdentifiers> <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1177/0960327112455670</relatedIdentifier> </relatedIdentifiers> <rightsList> <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights> <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights> </rightsList> <descriptions> <description descriptionType="Abstract">We investigated the role of adenosine receptors in amitriptyline-induced cardiac action potential (AP) changes in isolated rat atria. In the first group, APs were recorded after cumulative addition of amitriptyline (1 mu M, 10 mu M and 50 mu M). In other groups, each atrium was incubated with selective adenosine A(1) antagonist (8-cyclopentyl-1,3-dipropylxanthine (DPCPX), 10(-4) M) or selective adenosine A(2a) receptor antagonist (8-(3-chlorostyryl) caffeine, 10(-5) M) before amitriptyline administration. Resting membrane potential, AP amplitude (APA), AP duration at 50% and 80% of repolarization (APD(50) and APD(80), respectively), and the maximum rise and decay slopes of AP were recorded. Amitriptyline (50 mu M) prolonged the APD(50) and APD(80) (p &lt; 0.001) and the maximum rise slope of AP was reduced by amitriptyline (p &lt; 0.0001). Amitriptyline reduced maximum decay slope of AP only at 50 mu M (p &lt; 0.01). DPCPX significantly decreased the 50-mu M amitriptyline-induced APD(50) and APD(80) prolongation (p &lt; 0.001). DPCPX significantly prevented the effects of amitriptyline (1 mu M and 50 mu M) on maximum rise slope of AP (p &lt; 0.05). DPCPX significantly prevented the amitriptyline-induced (50 mu M) reduction in maximum decay slope of AP (p &lt; 0.001). The selective adenosine A(1) receptor antagonist prevented the electrophysiological effects of amitriptyline on atrial AP. A(1) receptor stimulation may be responsible for the cardiovascular toxic effects produced by amitriptyline.</description> </descriptions> </resource>
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