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  • 1
    Electronic Resource
    Electronic Resource
    Erhöhtes Serum-Myoglobin bei Niereninsuffizienz (1981)
    Springer
    Journal of molecular medicine 59 (1981), S. 247-248 
    Details
    ISSN: 1432-1440
    Keywords: Myoglobin ; Renal failure ; Myocardial infarction ; Myoglobin ; Niereninsuffizienz ; Myokardinfarkt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 44 Patienten mit chronischer Niereninsuffizienz unterschiedlicher Äthiologie wurde das immunreaktive Serum-Myoglobin bestimmt und mit den Werten von Probanden mit normaler Nierenfunktion verglichen. Es fand sich — unabhängig von der Grunderkrankung — eine hoch signifikante lineare Korrelation zwischen dem Serum-Myoglobin und der Serum-Kreatinin-Konzentration. Bei Patienten mit Serum-Kreatinin-Werten über 550 µMol/1 (6,2 mg-%) lagen die Serum-Myoglobin Konzentrationen fast regelmäßig im pathologischen Bereich. Dies gilt auch für chronische Dialysepatienten. Die Befunde zeigen, daß bei Patienten mit höhergradiger, chronischer Niereninsuffizienz das Serum-Myoglobin nur mit Einschränkung zur Infarktdiagnostik geeignet ist.
    Notes: Summary In 44 patients with chronic renal failure of varied etiology serum immunoreactive myoglobin was measured and compared to values obtained in patients with normal renal function. Irrespective of the underlying disease a highly significant linear correlation was found between serum immunoreactive myoglobin and serum creatinine concentration. In patients with serum creatinine concentrations above 550 µmol/1 (6.2 mg%) serum myoglobin was as a rule elevated above the range found in the controls with normal renal function. This was also true in dialysis patients. These result demonstrate that serum myoglobin may only be used with restrictions in the diagnosis of myocardial infarction in patients suffering from advanced chronic renal failure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01476583
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  • 2
    Electronic Resource
    Electronic Resource
    Bezafibrat-induzierte Myolyse und Myoglobinurie bei Patienten mit eingeschränkter Nierenfunktion (1984)
    Springer
    Journal of molecular medicine 62 (1984), S. 346-348 
    Details
    ISSN: 1432-1440
    Keywords: Bezafibrate ; Rhabdomyolysis ; Myoglobinuria ; Kidney failure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A muscular syndrome has been described in patients on clofibrate and fenofibrate therapy. The present paper describes four patients with impaired renal function in whom symptoms and signs of skeletal muscle damage developed during treatment with another clofibrinic acid derivative, bezafibrate. The syndrome was characterized by variable degrees of muscular cramps and paresis, excessive elevation of muscle enzymes in serum, myoglobinemia and myoglobinuria. Transient deterioration of renal function was also common. All patients had been overdosed with bezafibrate with regard to their renal function. It is concluded that bezafibrate like other lipid lowering agents of the clofibrate type may induce muscle damage, at least if doses are not adjusted to renal function. Extreme caution is warranted when treating patients with renal impairment with bezafibrate and strict dose adjustment to kidney function is necessary to avoid muscle damage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01716252
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  • 3
    Electronic Resource
    Electronic Resource
    Increased ammonia production during forearm ischemic work test in McArdle's disease (1981)
    Springer
    Journal of molecular medicine 59 (1981), S. 1319-1320 
    Details
    ISSN: 1432-1440
    Keywords: McArdle's disease ; Glycogenosis V ; Ammonia ; Lactate ; Ischemic work test ; McArdle-Syndrom ; Glycogenose V ; Ammoniak ; Laktat ; Ischämietest
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird ein Patient mit einem typischen “late onset” McArdle-Syndrom beschrieben. Während ischämischer Arbeit fand sich bei dem Patienten ein exzessiver Anstieg des Ammoniaks im Plasma. Dies dürfte auf einer Aktivierung der Myokinase/Myoadenylat-Deaminase-Reaktionen beruhen. Neben dem charakteristischerweise fehlenden Laktatanstieg unter ischämischer Arbeit scheint eine vermehrte Ammoniak-Freisetzung für das McArdle-Syndrom typisch zu sein.
    Notes: Summary A patient with typical features of late onset McArdle's disease is described. During forearm ischemic work test the patient exhibited an exaggerated increase in ammonia release, largely exceeding normal values. It is suggested, that this is due to an activation of the myokinase/myoadenylate deaminase pathway. Besides lack of lactate release increased ammonia release during ischemia may be a typical feature of McArdle's disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01711182
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Small scale spatial heterogeneity influences predation success in an unexpected way: Model experiments on the functinal reponse of predatory mites (Acarina) (1983)
    Springer
    Oecologia 58 (1983), S. 280-280 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00399233
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Mechanismen der selektiven elektrolytischen Korrosion homogener Legierungen (1980)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 31 (1980), S. 347-353 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Mechanisms of the selective electrolytical corrosion of homogeneous alloysThe problem of the selective removal of less noble components during the anodic dissolution of alloys is surveyed. For the case of binary alloys containing a noble metal component the characteristic polarization curves and the presently discussed mechanisms of the preferential dissolution of the less noble component are presented. A critical comparison between various experimental results yields some aspects in favour of the surface diffusion mechanism. A recent attempt to calculate the polarization curve of a preferentially corroding noble metal alloy is explained.
    Notes: In Form eines Überblicks wird das Problem der selektiven Auflösung unedler Legierungskomponenten erörtert. Am Beispiel der Korrosion edelmetallhaltiger Legierungen werden dabei charakteristische Stromspannungskurven besprochen und die derzeit diskutierten Mechanismen der selektiven Korrosion homogener Legierungen vorgestellt. Der kritische Vergleich verschiedener experimenteller Ergebnisse ergibt einige Gesichtspunkte, die für das Vorherrschen eines Oberflächendiffusionsmechanismus sprechen. Ein unlängst unternommener Versuch zur Berechnung der anodischen Stromspannungskurven edelmetallhaltiger Legierungen wird erläutert.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19800310504
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Resistenz von Edelmetall-Dentallegierungen (1982)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 33 (1982), S. 83-88 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: A study of the dealloying resistance of noble metal dental alloys.In connection with the development of low gold dental alloys the corrosion resistance of homogeneous gold-palladium-silver-experimental alloys was investigated in a chloride solution. Analogous measurements were made with several noble metal containing intermetallic phases which may be present in dental alloys of more complex composition. The results indicate a high corrosion resistance of the homogeneous gold-palladium-silver-alloys, since their free corrosion potentials are always situated within a region of their anodic polarization curves, where the current density of metal dissolution is extremely low. Within the composition limits of these alloys the substitution of gold by palladium did not reduce the extension of this “region of immunity” in a significant way. Intermetallic phases, however, as present in the systems silver-tin, silver-palladium-tin and silver-palladium-indium show a clearly restricted “region of immunity” and, at the free corrosion potential, are dissolved at a relatively high rate.
    Notes: Im Zusammenhang mit der Entwicklung goldarmer Dentallegierungen wurde in einem Chloridelektrolyten die, Korrosionsbeständigkeit homogener Gold-Palladium-Silber-Modellegierungen untersucht. Analoge Messungen wurden an verschiedenen edelmetallhaltigen intermetallischen Phasen durchgeführt, die in komplizierter zusammengesetzten Dentallegierungen auftreten können. Die Meßergebnisse zeigen, daß die Gold-Palladium-Silber-Legierungen eine hohe Korrosionsbeständigkeit aufweisen, da ihre Korrosionspotentiale durchweg in jenem Bereich ihrer anodischen Stromspannungskurve liegen, in dem die Geschwindigkeit der Metallauflösung extrem klein ist. Die Ausdehnung dieses “Resistenzbereiches” wird nicht wesentlich verkleinert, wenn innerhalb der hier vorgegebenen Grenzen Gold teilweise durch Palladium substituiert wird. Intermetallische Phasen der Systeme Silber-Zinn, Silber-Palladium-Zinn und Silber-Palladium-Indium weisen dagegen einen deutlich eingeschränkten Resistenzbereich auf und werden bereits beim Korrosionspotential vergleichsweise schnell aufgelöst.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19820330203
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    Paper (German National Licenses)
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