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  • 1
    ISSN: 1432-0428
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0428
    Keywords: Diabetes morbidity ; epidemiology ; subclinical diabetes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 114 (1973), S. 233-248 
    ISSN: 1432-1076
    Keywords: Pediatrics ; Enzymes ; Lactate dehydrogenase ; Alkaline phosphatase ; Leucine aminopeptidase ; Inflammatory diseases ; Urinary excretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Aus stationär aufgenommenen Kindern wurden 64 Patienten im Alter von 4 Tagen bis zu 13 Jahren randomisiert ausgewählt. Im Rahmen der Erstuntersuchungen wurden die Ausscheidung der Lactatdehydrogenase (LDH), alkalischen Phosphatase (AP) und der Leucinarylamidase (sogenannte Leucinaminopeptidase, LAP) im 8 Std-Nachtharn untersucht. Die Aktivitätsbestimmungen erfolgten in modifizierten Standardverfahren im Mikrolitersystem; der Sammlung, Vorbereitung und Aufarbeitung der Harne wurde besonderes Augenmerk geschenkt. Aus Patienten mit banalen, nichtentzündlichen Erkrankungen, ohne Fieber und ohne erhöhte Proteinausscheidung im Harn wurde ein Grundkollektiv von 18 Kindern gebildet. Bei diesem Kollektiv betrug die Ausscheidung, $$\bar x \pm s$$ , für die LDH 2515±1838 mU/Std, für die AP 255±107 mU/8 Std und für die LAP 310±169 mU/8 Std. Mit zunehmendem Alter steigt die Ausscheidung der LDH von 1359 über 1531 und 2534 auf 4397 mU/8 Std an. Dagegen bleibt die Gesamtausscheidung der AP und LAP in diesem Alterszeitraum gleich. Bei allen Altersstufen ist die Ausscheidung der LDH dem Harnvolumen streng direkt proportional, r=0,95), nicht hingegen die der AP und LAP. Geschlechtsunterschiede sind bei allen drei Enzymen nicht festzustellen. Bei dem Krankenkollektiv bestehen auch bei unseren Kindern keine Zusammenhänge zwischen dem Bakteriengehalt und der proteinkonzentration und-ausscheidung einerseits und dem Ausmaß der Enzymurie andererseits. Dagegen wird Fieber über 38,6° C regelmäßig begleitet von hohen und höchsten Enzymausscheidungen bei AP und LAP; im Gegensatz dazu bleibt die LDH unauffällig. Umgekehrt bedeutet eine Enzymurie keinen Hinweis auf eine fieberhafte Erkrankung. Bei unseren Patienten mit Harnwegsinfekten und Nierenerkrankungen finden wir keine erhöhten Ausscheidungen der LDH, AP und LAP. Affallend ist die hohe Korrelation zwischen entzündlichen Allgemeinerkrankungen, insbesondere Entzündungen der Atemwege und des Magen-Darm-Traktes und der Ausscheidung der LAP, teilweise der AP. Zwischen Virusinfektionen und erhöhten Enzymausscheidungen scheinen keine Beziehungen zu bestehen. Die bisherigen Vorstellungen über die Mechanismen der pathologischen Enzymurie scheinen auf Grund des unterschiedlichen Verhaltens von LDH, AP und LAP einerseits, der verschiedenartigen Korrelation dieser Enzyme zu verschiedenen Krankheitstypen andererseits revisionsbedürftig. Weiterhin sollte gerade bei Kindern an Hand der vorgelegten Befunde der Versuch einer “enzymatischen urinären Verlaufskontrolle” von schweren Krankheitsbildern an größeren Fallzahlen durchgeführt werden. Ausgangspunkt hierfür sind die beobachteten normalen und schwerst pathologischen Enzymausscheidungen bei Pneumonien, Meningitiden und Leucosen.
    Notes: Abstract Sixty-four children aged from 4 days to 13 years were selected randomly amongst clinic patients. Parallel to primary examinations the urinary excretions of the enzymes lactate dehydrogenase (LDH), alkaline phosphatase (AP) and leucine aminopeptidase (LAP) during an eight-hour night period were measured. The determinations of activity were performed by modified standard methods in the microliter scale. Special attention was given to the collection and preparation of the urine samples. A group of 18 children with trivial diseases, with no signs of inflammatory processes, fever, or increased excretion of protein was formed. This group was used as a “normal” collective. The figures for the excretion of enzymes were as follows $$(\bar x \pm s)$$ : 2515±1838 (LDH), 255±107 (AP) and 310±169 (LAP) mU/8 hrs. The excretion of LDH increased with advancing age, starting from 1359 to 1531, 2534 and 4397 mU/8 hrs. In contrast to these figures the total excretion of AP and LAP remains unchanged. At every age the excretion of LDH was closely correlated with the volume of the urine (coefficient of correlation r=0.95); there was no correlation with the excretion of AP and LAP. Nor did there seem to be any sex-dependent differentiation. In no case was any correlation found between the content of bacteria or proteins and that of enzymes in the urine. Elevated temperatures (38.6°C) were regularly accompanied by high values for the excretion of AP and LAP. Correlation between excretion of LAP, and, in some cases, of AP and general inflammatory diseases especially diseases of the respiratory and intestinal tracts was remarkably close. There did not appear to be any correlation will viral infections or — in our patients — to urogenital infections or kidney diseases. The hitherto genrally accepted conception of the mechanism of pathological excretion of enzymes seems to require a revision if one considers the different behaviour of LDH, AP and LAP.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 2 (1973), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Membrane-associated species-specific antigens (monkey) and alloantigens (mouse) were solubilized by pulsed high frequency sonic energy. 15 to 25% of the total antigenicity of the donor cells was recovered. The product was highly water-soluble, essentially protein, and stable during extensive ultrafiltration or storage for one year. Gel filtration and electron microscopic analyses of soluble species-specific antigen suggested molecular heterogeneity with a major active component in the 50,000 molecular weight region. Soluble antigen was effectively bound to immunoadsorhents but only 10 to 15% was desorbed in active form.Murine alloantigen was purified 20 to 25 times, the soluble preparations contained approximately 500 ID50/ml or 1ID50/25–30 μg protein, and the specificity ratio was 20 to 40. Extraction of murine cells with 3M KC1 yielded substantially lower soluble antigen activity. Solubilized murine alloantigen showed activity in both in vitro and in vivo tests.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 28 (1972), S. 161-162 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Der Einfluss eines biochemischen, zellfreien Hautextraktes auf menschliche Vorhautzellen wurde in Kultur geprüft. Allgemeine Hemmung von Zellwachstum, Zellvermehrung, Zellvolumen und Mitoserate sprechen für aktiven Bestandteil des Extraktes.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 2 (1970), S. 237-254 
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Deviations from Matthiessen's rule (MR) in cold-worked Cu samples have been measured as a function of temperature between 4°K and room temperature. They can amount up to 100% of the residual resistivity. A second group of measurements concerns deviation from the additivity of the residual resistivities that arise in the deformed specimens when point defects are added at 4.6° K during a neutron irradiation. In a third group of experiments we investigated deviations from MR as a function of temperature in undeformed Cu samples that have been neutron irradiated at 4.6°K and annealed at different temperatures. There are two essential reasons for these deviations: (1) Defects can change the vibrational behavior of the lattice and so alter the temperature-dependent part of the electrical resistivity. The additional resistivity is found experimentally and theoretically to depend asT 5 on temperature at low temperatures. (2) Anisotropies in the Fermi surface of Cu and in the scattering potentials of the defects give rise to deviations from MR. These deviations can be described by a two-band model for the conduction electrons. Within the framework of this model we were able to describe the deviations that were measured in the deformed Cu samples and in Cu alloys (earlier experiments) in a consistent way, using the same parameters (ratio τ N /τ B of the relaxation times for the neck and belly of the Fermi surface) for the two-band model. Furthermore we could show that the enhanced resistivity increase during neutron irradiation observed in deformed Cu samples is not the consequence of an enhanced defect production rate but that it is a result of deviations from MR due to the different scattering behavior of the defects induced by irradiation and cold work. Measurements of the longitudinal magnetoresistance of the deformed and irradiated copper samples give additional information about the scattering anisotropy of the defects and therefore allow for separating the contributions of the two types of defects the combination of which causes deviations from MR.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 2 (1970), S. 59-86 
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Deviations from Matthiessen's rule (MR) due to phonons inCuAu andCuNi alloys were measured as a function of temperature between 4°K and 300°C. They can amount to 40% of the residual resistivity of the doped samples. A second group of measurements concerns deviations from MR that occur inCuNi during a neutron irradiation at 4.6°K. It turned out that there are two essential reasons for these deviations. The first one is the influence of the defects on the temperature-dependent part of the electrical resistivity. It plays an important role mainly at low temperatures. We found experimentally and theoretically aT 5 dependence for this additional resistivity at low temperatures. The second reason is the existence of anisotropies in the Fermi surface of Cu and in the scattering potential of the defects. These deviations can be described, as suggested by J. M. Ziman, by a two-band model for the Fermi surface. Furthermore, we could show that the enhanced resistivity increase in theCuNi alloys during neutron irradiation at 4.6°K, which was generally interpreted as an enhanced defect production, is essentially caused by deviations from MR. Measurements of the longitudinal magnetoresistance of the doped copper at 4.2°K were very useful for discriminating between the different causes of deviations from MR.
    Type of Medium: Electronic Resource
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