The effects of Zn2+ on guinea pig isolated heart preparations

dc.contributor.authorKalfakakou, V. P.en
dc.contributor.authorEvangelou, A. M.en
dc.contributor.authorBenveniste, J.en
dc.contributor.authorArnoux, B.en
dc.date.accessioned2015-11-24T19:41:35Z
dc.date.available2015-11-24T19:41:35Z
dc.identifier.issn0163-4984-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/24506
dc.rightsDefault Licence-
dc.subject4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid/pharmacologyen
dc.subjectAnimalsen
dc.subjectCoronary Circulation/drug effectsen
dc.subjectFemaleen
dc.subjectGuinea Pigsen
dc.subjectHeart/*drug effectsen
dc.subjectHeart Rate/drug effectsen
dc.subjectMyocardial Contraction/drug effectsen
dc.subjectMyocardium/cytology/metabolismen
dc.subjectPerfusionen
dc.subjectSpectrophotometry, Atomicen
dc.subjectVerapamil/pharmacologyen
dc.subjectZinc/metabolism/*pharmacologyen
dc.titleThe effects of Zn2+ on guinea pig isolated heart preparationsen
heal.abstractIsolated guinea pig hearts were perfused, by the Langendorff technique, with 30, 15, 7.5, and 1.5 microM Zn2+ in Chenoweth solution. Contractile force, coronary flow, and heart rate were recorded by means of Narco IV Physiograph. Calcium inhibitor (Verapamil 1 microM) and anion inhibitor (DIDS: 0.1, 1, and 5 microM) were used subsequently in the perfusing solutions in order to distinguish some of the possible mechanisms that Zn2+ uses to exert its action on cardiac myocytes. Isomolar to zinc concentration of Pb (II) and Co (II) were used to elucidate whether zinc effects on heart are specific for this metal. All hearts were used to estimate their zinc and calcium content by means of AAS (Atomic Absorption Spectrometry). Our findings suggest that the higher the Zn2+ concentration, the more toxic effects on heart are expressed by rapid reversible contractile force reduction and reversible specific changes of heart rate and flow. Zinc 1.5 microM in the perfusing solution benefits heart performance, but not significantly. Furthermore, the metal exerts specific effects on guinea pig heart, and it is rather possible that these effects on cardiac myocytes are held through cell membrane receptors.en
heal.accesscampus-
heal.fullTextAvailabilityTRUE-
heal.identifier.primary10.1007/BF02785312-
heal.identifier.secondaryhttp://www.ncbi.nlm.nih.gov/pubmed/7504945-
heal.identifier.secondaryhttp://www.springerlink.com/content/6kt7h57531857428/-
heal.journalNameBiol Trace Elem Resen
heal.journalTypepeer-reviewed-
heal.languageen-
heal.publicationDate1993-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικήςel
heal.typejournalArticle-
heal.type.elΆρθρο Περιοδικούel
heal.type.enJournal articleen

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