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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 253 (1966), S. 29-30 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 55 (1977), S. 1125-1126 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 46 (1968), S. 1260-1263 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Methemoglobin-reductase deficiency in the red cells has been found in a 11 years old girl. The enzymes of the glycolysis and pentosephosphatcyclus were normal. Further findings were decreased ATP and slightly decreased GSH in the red cells. Lactic acid production was increased. Methemoglobin reduction and CO-absorption were abnormal in the presence of glucose and lactic acid and was normalized by addition of toluidinblue. This abnormalities were considered as a consequence of the methemoglobin reduktase deficiency.
    Notes: Zusammenfassung Bei einem jetzt lljährigen Mädchen besteht seit der Geburt eine Cyanose, bedingt durch eine kongenitale Methämoglobinämie mit Methämoglobinreduktasemangel. Dieser Enzymmangel ist im Erythrocyten als primäre Störung anzusehen, die anderen Enzyme der Glykolyse und des Pentosephosphatcyclus zeigen Normalwerte. Die weiteren gefundenen metabolischen Besonderheiten — ATP vermindert, GSH gering vermindert, Lactatbildung erhöht, verminderte Methämoglobinreduktion ohne Substrat, mit Glucose und Lactat, durch Toluidinblau normalisiert, ebenso die CO-Aufnahme — sind insgesamt Folgen dieses Enzymmangels.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Sialyltransferase activity ; Malignant diseases ; Immobilized acceptor ; Sialyltransferase-Aktivität ; Maligne Erkrankungen ; Trägergebundener Akzeptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Sialyltransferase-Aktivität von Patienten mit malignen Erkrankungen wurde den Werten von Personen gegenübergestellt, die keine klinischen Symptome und Beschwerden aufwiesen. Dabei zeigte sich, daß in 80% der untersuchten pathologischen Fälle eine deutliche Erhöhung der Serum-Sialyltransferase im Vergleich zum Normalkollektiv festgestellt werden konnte. Ferner konnten wir durch kovalente Bindung von Asialo-Fetuin als Akzeptor an Sepharose 4B eine Vereinfachung der Bestimmungsmethode erreichen.
    Notes: Summary Sialyltransferase activity was estimated in serum samples of patients with cancer and controls using immobilized asialo-fetuin as the acceptor and cytidine-5′-monophospho [14C] sialic acid as the donor. The data suggest that increased enzyme activity can be found in more than 80% of the samples from patients with malignant diseases.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 45 (1967), S. 73-77 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In the serum and plasma of adults patients suffering from osteopetrosis we found a 6–8-fold increased activity of acid phosphatase and aldolase. The increase of lactase dehydrogenase was minor. The phosphatases had three maxima of activity in the acid pH range using 0,2M acetate buffer. Starch gel electrophoresis showed separation of three fractions. The substrates phenylphosphate,β-glycerophosphate andα-glycerophosphate are hydrolysed in the order listed with decreasing velocity. l-tartrate inactivated the phosphatases to 40%, but cystein to about 70%. In all patients an increase of citric acid, pyruvic acid and lactic acid was observed.
    Notes: Zusammenfassung 1. In Serum und Plasma von Patienten, die an Marmorknochenkrankheit litten, wurden Erhöhungen der Aktivität der „sauren“ Phosphatasen bis auf das Sechsfache der Norm, beträchtliche Aktivitätserhöhung der Aldolase und geringfügige der Lactatdehydrogenase festgestellt. 2. Die saure Plasmaphosphatase besitzt drei Aktivitätsmaxima bei pH 5,1, 4,7 und 4,0. Saure Serumphosphatase wird durch Stärkegelelektrophorese in drei Fraktionen aufgespalten und greift Phenylphosphat,β-Glycerophosphat undα-Glycerophosphat in der Reihenfolge ihrer Nennung mit abnehmender Geschwindigkeit an. Diese Plasmaenzyme wurden durch l-Tartrat zu 40% und durch Cystein zu 70% gehemmt, was sie von Phosphatasen anderer Herkunft unterscheidet. 3. Bei den untersuchten Patienten waren die Konzentrationen von Citronensäure und Brenztraubensäure im Serum stark, die der Milchsäure leicht erhöht.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Glutathionreductase and triosephosphate-isomerase were found to be reduced in the erythrocytes and platelets of a twelve year old boy with pancytopenia of the type Estren-Damashek.
    Notes: Zusammenfassung Bei einem 12jährigen Knaben mit Pancytopenie vom Typ Estren-Damashek wurde bei Stoffwechseluntersuchungen der Erythrocyten und Thrombocyten ein Mangel an Glutathionreductase und Triosephosphatisomerase festgestellt.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 54 (1976), S. 599-600 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  Magnetic resonance imaging (MRI) is a versatile noninvasive tool for achieving full-field quantitative visualization of complex fluid flows. The MRI signal results from the interaction of radio-frequency (RF) pulses with nuclear spins exposed to a strong static magnetic field. The two main techniques of MRI velocimetry are time-of-flight and phase contrast techniques. Time-of- flight techniques involve tagging and tracking a material volume of fluid, whereas phase contrast techniques use magnetic field gradients to encode velocity information into the phase of the MRI signal. In this study, both techniques are used to probe the pressure-driven steady flow of water in a pipe with a step stenosis. The velocity measurements were then compared with computational results obtained using the FIDAP software package. The experiments show that the phase contrast method gives more accurate results, with 90% of the measurements within 10% of the local computational fluid dynamics (CFD) velocity predictions at Re = 100 and 94% of the measurements within 10% of the local CFD predictions at Re = 258. Although the time-of-flight experiments were not as accurate, they provide a good qualitative image of the flow field. Sources of the discrepancies between the MRI data and the CFD results are also discussed, including acceleration and spin flow-through artifacts.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 17 (1968), S. 294-299 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Erythrocyte metabolism studies in a case with hereditary spherocytosis only showed minimal deviations of the activity of the enzymes of glycolysis from the normal values. The formation of lactate was increased, the intracellular sodium concentration was increased and the intracellular potassium concentration was decreased. The methemoglobin level of the erythrocytes was increased. After splenectomy, which resulted in a good clinical and hematological remission, lactate formation and the abnormal electrolyte and methemoglobin level of the erythrocytes returned to normal.
    Notes: Zusammenfassung Untersuchungen des Stoffwechsels der Erythrozyten bei einem Fall von hereditärer Sphärozytose ergaben nur geringe Abweichungen der Aktivität der Fermente der Glykolyse von der Norm. Die Bildung von Laktat war gesteigert, der Gehalt an intrazellulärem Natrium vermehrt und an Kalium vermindert; der Methämoglobingehalt der Erythrozyten war vermehrt. Nach der Splenektomie, die zu einer guten klinischen und hämatologischen Remission führte, normalisierte sich die Laktatbildung und der abnorme Elektrolytund Methämoglobingehalt der Erythrozyten.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Clinical and experimental medicine 140 (1966), S. 287-293 
    ISSN: 1591-9528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary After a variable dosis of iron given intramuscular the levels of glucose-6-phosphate, lactate, ATP, ADP, AMP, creatinphosphate and orthophosphate were determined in the heart muscle and in liver tissue of guinea pigs. We found a dosis dependent alteration of the concentration of these substrates in heart muscle as well as in liver tissue. These alterations can be interpreted as a damage of cell-metabolism caused by the excess iron deposition.
    Notes: Zusammenfassung Unter verschieden hohen parenteralen Eisengaben wurden Glucose-6-phosphat, Lactat, ATP, ADP, AMP, Kreatinphosphat und Orthophosphat im Herzmuskel, ein Teil dieser Substrate in der Leber von Meerschweinchen bestimmt. Es wurde eine von der Eisendosis abhängige Veränderung der untersuchten Substrate sowohl in der Leber als auch im Herzmuskel gefunden. Die Störung des Stoffwechsels durch das pathologisch abgelagerte Eisen war in der Leber früher und stärker als im Herzmuskel nachweisbar. Diese Veränderungen sprechen für eine Schädigung des Zellstoffwechsels durch Eisenablagerungen.
    Type of Medium: Electronic Resource
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