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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 38 (1982), S. 934-935 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The conductivity of the coronary arterial bed increased in healthy and decreased in alloxan-diabetic dogs in response to intracoronary administration of norepinephrine or sympathetic stimulation. This suggests a modification of adrenergic receptors sensitivity in diabetes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Basic research in cardiology 77 (1982), S. 499-506 
    ISSN: 1435-1803
    Keywords: alloxan-diabetes ; altered coronary reactivity ; canine myocardium ; coronary occlusion ; diastolic myocardial stiffness ; interstitial myocardial oedema
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurde bewiesen, daß die Verabreichung von Noradrenalin 2 und 48 Stunden nach Okklusion der vorderen, absteigenden Koronararterie eine Erhöhung des Wassergehaltes, des Thiocyanat-Raumes, der mikroskopisch nachweisbaren Permeabilität sowie der diastolischen Steifheit in dem nichtischämischen Teil der linken Herzkammerwand hervorruft. Bei diabetischen Tieren war das ischämische Areal wesentlich größer, und es trat kein Myokardödem auf. Bei stoffwechselgesunden Tieren konnte eine strenge Korrelation zwischen den erhöhten Werten des Wassergehalts, des Thiocyanat-Raumes sowie der diastolischen Steifheit dargestellt werden. In diabetischen Tieren war dagegen die diastolische Steifheit von vornherein erhöht und nahm ab, wenn nach der Koronarunterbindung Noradrenalin infundiert wurde. Deshalb wird angenommen, daß die veränderte Gefäßreaktivität bei Diabetes sowohl für das Ausbleiben eines Ödems im nichtischämischen Anteil des Myokards nach Noradrenalin-Infusion verantwortlich ist als auch für Ausmaß und Schweregrad des Myokardinfarktes.
    Notes: Summary The aim of this study was to clarify the role of altered diabetic vascular reactivity in ischaemic heart disease. In diabetic condition, the necrotic area of myocardial infarction was significantly extended and myocardial oedema failed to develop after administration of norepinephrine 2 or 48 hours after ligation of the left anterior descending coronary artery. In metabolically healthy dogs the necrotic area of myocardial infarction was considerably smaller and an increase in myocardial water content, in myocardial thiocyanate space, in microscopically demonstrable permeability and in diastolic stiffness of left ventricular wall occurred when norepinephrine was administered 2 or 48 hours after coronary infarction. A close correlation was demonstrable between enhanced water content, thiocyanate space and diastolic stiffness in metabolically healthy animals, whereas in diabetic condition diastolic stiffness was primarily increased, and decreased when norepinephrine was infused after coronary ligation. Therefore, the altered vascular reactivity in diabetes is supposed to be responsible for the lack of oedema in the nonischaemic part of myocardium after norepinephrine infusion as well as for the size and severity of myocardial infarction.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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