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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Prostaglandins 8 (1974), S. 21-30 
    ISSN: 0090-6980
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0090-6980
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1912
    Keywords: Epinephrine ; Norepinephrine ; Isoprenaline ; Propranolol ; Na-Reabsorption ; Adrenalin ; Noradrenalin ; Isoprenalin ; Orciprenalin ; Propranolol ; Na-Resorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In Versuchen an wachen Ratten in Stoffwechselkäfigen wurde die Flüssigkeits-, Na- und K-Ausscheidung nach oraler Wasserbelastung untersucht. 0,3 μmol/kg Adrenalin subcutan wirkten leicht diuresehemmend, nach 0,3 μmol/kg Noradrenalin subcutan war die Ausscheidung vermehrt und beschleunight, während 0,05 μmol/kg Isoprenalin stark antidiuretische Effekte hatten. Die Wirkung von Noradrenalin war durch Phentolamin oder Propranolol nicht zu beeinflussen. Dagegen wirkte Adrenalin nach Phentolamin antidiuretisch wie Isoprenalin und nach Propranolol diuretisch wie Noradrenalin. Die Isoprenalin-Wirkung wurde durch vorher gegebenes Propranolol verhindert. In Mikropunktionsversuchen erhöhte Orciprenalin direkt intratubulär gegeben die Resorptionskapazität des proximalen Konvoluts. Diese Wirkung war durch vorher subcutan injiziertes Propranolol hemmbar. Adrenalin und Noradrenalin hatten im proximalen Konvolut keine Wirkung auf die lokale Resorptionsfähigkeit.
    Notes: Summary The renal excretion of fluid, sodium and potassium has been measured in unanaesthetized rats after oral loading with water. Subcutaneous injections of 0.3 μmol/kg epinephrine had a small antidiuretic action, whereas the same dose of norepinephrine increased urine flow. 0.05 μmol/kg isoprenaline delayed the excretion of water and depressed the excretion of Na and K. The effects of norepinephrine were unchanged after injecting phentolamine or propranolol. Epinephrine had a strong isoprenaline-like antidiuretic action after phentolamine but increased the urine flow like norepinephrine after an injection of propranolol. The actions of isoprenaline could be blocked by propranolol. In micropuncture experiments orciprenaline increased the intrinsic reabsorptive capacity of the proximal tubular epithelium when injected into the lumen of a proximal convolution. These effects are prevented by propranolol. Epinephrine and norepinephrine had no effects on tubular reabsorption in the proximal convolution.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 260 (1968), S. 137-138 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1912
    Keywords: Transepithelial Fluid Transport ; Isoprenaline ; Theophylline ; Cyclic AMP ; Gall Bladder
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The isolated gall bladder of guinea pigs was used to study the effects of isoprenaline and orciprenaline on fluid transport. Both drugs in the range 10−8 M to 10−4 M inhibited fluid transport 20–50 min after application, when applied to the serosal side. The maximum inhibition observed was 49±3.9% by a concentration of 10−5 M. After this inhibitory phase the transport rate returned to control values. Doubling the concentration did not evoke a new inhibitory response, but washing gall bladders with fresh Ringer's solution restored the sensitivity to isoprenaline. Isoprenaline was ineffective when added to the mucosal side. Propranolol but not practolol, prevented the action of isoprenaline. Theophylline inhibited fluid transport in the range 10−3 M to 10−2 M. Cyclic adenosine 3′,5′-monophosphate (cyclic AMP) 3.3×10−3 M decreased fluid transport only when added to the serosal side. In contrast to isoprenaline, both theophylline and cyclic AMP caused a prolonged decrease in fluid transport. The results are in accordance with the assumption that the inhibition of fluid transport in the gall bladder by β-sympathomimetic drugs may be caused by an increase of the intracellular cyclic AMP level.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 50 (1996), S. 293-297 
    ISSN: 1432-1041
    Keywords: Key words Lansoprazole; pharmacokinetics ; absolute bioavailability ; debrisoquine/sparteine phenotype ; mephenytoin phenotype
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: In a crossover study 12 healthy volunteers received lansoprazole 15 mg or 30 mg orally, or 15 mg intravenously in randomized order as a single dose. Blood samples were taken and plasma levels of lansoprazole were determined using an HPLC method. The volunteers were phenotyped for the debrisoquine/sparteine and mephenytoin polymorphisms. Results: The total clearance was 517 ml⋅min−1, and the absolute bioavailability was 91% for the 30-mg and 81% for the 15-mg enteric-coated formulation. The elimination half-life was about 1 h. No correlation of the plasma levels to the sparteine metabolic ratio was found, and no correlation to the mephenytoin type could be established, since all volunteers of the mephenytoin type were extensive metabolizers. Although considerable variation, inter- and intraindividually, was observed, the increase in cmax and AUC did not deviate from dose proportionality. The present galenic formulation ensures a high bioavailability after a single dose.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 31 (1975), S. 65-66 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung PGA1 und PGE2 erhöhen die Nierendurchblutung sowohl im Zustand des Wassermangels als auch der Überwässerung, während PGE2 nicht aber PGA1 unabhängig vom Flüssigkeitsgleichgewicht die renale Wasser- und Elektrolytexkretion steigert. Beide PGs erhöhen die Ausscheidung von cAMP. Sie wirken ADH-ähnlich während einer Wasserdiurese und nicht antagonsitisch gegen ADH während der Antidiurese.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2013
    Keywords: Hydrostatic pressure ; Edema ; Hydraulic conductivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The influence of hydrostatic pressure elevation on fluid absorption by the isolated guinea pig gallbladder was determined following addition of various smooth muscle spasmogens to the serosal bathing medium. Acetylcholine, prostaglandin E1 and ouabain increased intraluminal presure from about 4 cm H2O to 13 cm H2O. The pressure increase was associated with a marked but transient stimulation in fluid transfer. The same phenomenon was observed following an increase in hydrostatic pressure by addition of Ringer's solution to the gallbladder lumen. Evidence is presented to support the hypothesis that this phenomenon represents the extrusion of an edema from the gallbladder wall. Two observations favour this explanation: 1. The wet weights of gallbladder subjected to high intraluminal hydrostatic pressure were only one third of those at low pressure. 2. Microscopic examination of the wall of gallbladders at low pressure showed a marked submucosal edema.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 138 (1968), S. 177-178 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Zusammenfassung Diese Untersuchungen zeigen, daß bei Weinen, selbst bei solchen aus edelfaulen Trauben, die Bindung des SO2 an Weininhaltsstoffe nicht so stark ist, als daß sie nicht bei einem pH-Wert, der dem im Magensaft vorhandenen entspricht, aufgespalten werden könnte. Demnach kann, unter der Voraussetzung, daß die Verhältnisse bei der Destillation bei pH 1,5–1,6 mit denen im Magen in etwa gleichsetzbar sind, das gesamte in Wein enthaltene SO2 physiologisch wirksam werden. Weitere Untersuchungen sind vorgesehen.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 142 (1970), S. 40-46 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Aufbauend auf der colorimetrisch gut auswertbaren Farbreaktion der Aldehyde mit 3-Methylbenzthiazolon-(2)-hydrazon nach E.Sawicki u. Mitarb. wurde eine Bestimmungsmethode für Acetaldehyd in Wein ausgearbeitet. Ihre Anwendung ist nicht auf Wein beschränkt, sondern sie eignet sich auch für andere - sulfitierte wie nicht sulfitierte - Flüssigkeiten.
    Notes: Summary A method for the determination of acetaldehyde in wine based on the sensitive reaction of aliphatic aldehydes with 3-methyl-benzthiazolone-(2)-hydrazone is described. It was checked with model-wines and wines, shows a good reproducibility, and can be used for sulfited and unsulfited products.
    Type of Medium: Electronic Resource
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