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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 50 (1972), S. 531-533 
    ISSN: 1432-1440
    Keywords: Glucagon ; cat heartin situ ; β-blockade ; dose response curve ; Glucagon ; Katzenherzin situ ; β-Blockade ; Dosis-Wirkungskurve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die positiv inotrope Wirkung von Glucagon wurde am Katzenherzen in situ ermittelt. (dP/dt) max nahm dosisabhängig zu und es wurde eine Dosis-Wirkungskurve (3–40 µg Glucagon/kg) angefertigt. Der Verlauf dieser Kurve wurde von einer gleichzeitigen Propranolol-Infusion nicht wesentlich beeinflußt.
    Notes: Summary The positive inotropic action of glucagon was assessed on the cat heartin situ. (dP/dt) max in the left ventricle increased in a dose dependent manner (3–40 µg/kg) and a dose response curve could be established. This curve was not significantly influenced by a simultaneous infusion of propranolol.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 4437-4439 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We explore the magnetization pattern of Co and permalloy disks with diameters between 80 nm and 1 μm by using two complementary experimental techniques: Lorentz microscopy and magnetic force microscopy (MFM). By means of Lorentz microscopy we show that the dominating magnetization pattern of the disks is a vortex structure with closed flux lines in the plane of the disks. Complementary MFM measurements demonstrate that the magnetization in the center of the disks is tilted out of the plane of the disk. The experimental findings closely agree with corresponding micromagnetic calculations. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Theoretical Biology 47 (1974), S. 367-382 
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Theoretical Biology 17 (1967), S. 31-39 
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Theoretical Biology 156 (1992), S. 147-167 
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 337 (1974), S. 841-842 
    ISSN: 1435-2451
    Keywords: Posttraumatic Intrabronchial Bleeding ; Posttraumatische endobronchiale Blutung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusamrnenfassung Unter 312 in der Kieler Chirurgischen Universitätsklinik behandelten Thoraxtraumen fanden sich 15 Fälle (15%) mit einer posttraumatischen endobronchialen Blutung. Ein Drittel wurden operativ and zwei Drittel konservativ behandelt. 4 Patienten verstarben an den Folgen der respiratorischen Insuffizienz. Regelmäßige röntgenologische und endoskopische Kontrollen rechtfertigen ein zunächst abwartend konservatives Verhalten. Bei Fortdauern der Blutung über 3-4 Std, insbesondere unter den Bedingungen der künstlichen Ventilation wird zur operatives Therapie geraten.
    Notes: Summary The 312 thoracic injuries treated in the surgical clinic of the University of Kiel included 15 cases (15%) with posttraumatic Intrabronchial bleeding. One third of the vases received surgical and two thirds conservative treatment. Four Patients died as a result of respiratory insufficiency. Regular X-ray and endoscopic monitoring makes a conservative approach justifiable. Surgical intervention is indicated when bleeding continues for 3-4 h, especially during artificial ventilation.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 264 (1969), S. 299-300 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 295 (1976), S. 55-62 
    ISSN: 1432-1912
    Keywords: Sea anemone ; Polypeptide ; Mammalian hearts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The cardiac activity of toxin II, a basic polypeptide (m.w.: 4770) from the sea anemone Anemonia sulcata, was investigated in isolated electrically driven guinea-pig and rat auricles, Langendorff heart preparations of guinea-pigs and cat heart-lung preparations. Low concentrations of toxin II (2–100 nM) evoked a dose-dependent positive inotropic effect in the three different heart muscle preparations investigated. Higher concentrations of toxin II produced toxic symptoms like contracture and arrhythmia in auricles and atria (about 25 nM). In isolated cat hearts high toxin II concentrations (about 160 nM) caused unusual toxic symptoms such as long periods of ventricular fibrillation alternating with periods of normal cardiac activity. In rat and guinea-pig auricles as well as in Langendorff hearts of guinea-pigs the extent and rate of the positive inotropic effect induced by toxin II depended on the extracellular calcium concentration (0.45 to 2.7 mM). Toxin II did not alter the heart rate in spontaneously beating isolated cat hearts. In electrically driven guinea-pig auricles, the rate of the inotropic effect induced by toxin II was accelerated by increasing stimulation frequencies. Toxin II did not change the coronary flow in Langendorff heart preparations of guinea-pigs.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1591-9528
    Keywords: 3H-labelled cardiac glycosides ; Excretion ; Enteral administration ; Metabolism ; Absorption ; 3H-markierte Herzglykoside ; Ausscheidung ; Enterale Applikation ; Metabolismus ; Resorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Nach der intraduodenalen Applikation von3H-Digitoxin,3H-Digoxin und3H-g-Strophanthin bei narkotisierten Katzen wurden die Radioaktivität im Serum, Urin und Galle bis zu 3 Std nach der Injektion gemessen. 1. Sowohl für3H-Digitoxin als auch für3H-Digoxin erreichte die Serumradioaktivität nach etwa 2 Std das Maximum. Dieses Maximum lag für3H-Digitoxin etwa 2,5mal höher als für3H-Digoxin. Nach der Injektion von3H-g-Strophanthin wurden bei den verschiedenen Tieren stark streuende Werte für die Serumradioaktivität gefunden, die wahrscheinlich auf eine individuell schwankende Resorption zurückzuführen sind. 2. Nach oraler Gabe von3H-g-Strophanthin konnte bei Versuchspersonen keine Radioaktivität im Serum nachgewiesen werden. Etwa 0,5–2% der verabreichten Strophanthinmenge wurden jedoch mit dem Urin ausgeschieden. 3. Mit Hilfe51Cr-markierter Erythrocyten wurde das Blutvolumen der narkotisierten Katze bestimmt. Diese Grö\e beträgt 49,0±5,3 ml/kg. Die mit dem Blut zirkulierende Menge Radioaktivität nach Verabreichung der3H-Herzglykoside konnte somit berechnet werden. 4. 3H-Digitoxin und3H-Digoxin wurden vornehmlich mit der Galle ausgeschieden,3H-g-Strophanthin dagegen grö\tenteils über die Niere. 5. 3H-Digitoxin wurde in der Leber zum Teil abgebaut. Trotzdem konnten weder im Urin noch im Serum Abbauprodukte nachgewiesen werden. Sowohl3H-Digoxin als auch3H-g-Strophanthin lagen in Galle und Urin nur unverändert vor.
    Notes: Summary After intraduodenal administration of3H-digitoxin,3H-digoxin and3H-ouabain in the anesthetized cat the radioactivity was determined in serum, urine and bile up to 3 h after the injection. 1. Both for3H-digitoxin and for3H-digoxin serum radioactivity reached its maximum value after approximately 2 h. For3H-digitoxin this maximum was considerably higher than for3H-digoxin. After the injection of3H-ouabain the serum radioactivity showed strongly varying levels in the individual animals. The differences may be due to varying absorption of the drug. 2. In the serum of human subjects no radioactivity could be detected after the oral administration of3H-ouabain. However, about 0.5–2% of the drug dosis given was excreted with the urine. 3. By means of51Cr labelled erythrocytes we determined the blood volume of the anesthetized cat. This parameter proved 49.0 ± 5.3 ml/kg. The amount of radioactive glycosides and their metabolites circulating with the blood could thus be calculated. 4. Both for3H-digitoxin and for3H-digoxin the excretion with the bile proved of greater relative importance than that with the urine.3H-ouabain, however, was excreted mainly via the kidneys. 5. Part of the3H-digitoxin was metabolized in the liver, although neither in the urine nor in the serum metabolites of3H-digitoxin could be demonstrated. Both for3H-digoxin and for3H-ouabain no metabolites could be found in bile and urine.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 327 (1985), S. 567-579 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Iminoformylation Reaction of Substituted Crotonnitriles. I. Synthesis of New N, N-Disubstituted 4-Amino-1, 1-dicyanobuta-1, 3-dienesA useful and efficient method for the synthesis of 4-amino-1, 1-dicyanobuta-1, 3-dienes 10-20 based on the iminoformylation reaction of crotonnitriles 7-9 with the system triethyl orthoformate/secondary amine in the presence of an acidic catalyst is described. This novel route to the title compounds yields products which are easy to isolate and to purify and also allows to prepare the hitherto unknown N-aryl substituted 4-amino-1, 1-dicyanobuta-1, 3-dienes. Hence it is advantageous as compared to existing iminoformylation reactions of crotonnitriles using formamide acetals.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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