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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 113 (1977), S. 243-246 
    ISSN: 1432-072X
    Keywords: Aspergillus ; Ferrichrome ; Ferricrocin ; Biosynthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Markiertes Glycin und Serin wurde in Ferrichrom, Ferricrocin und Ferrichrysin von vier Stämmen der Gattung Aspergillus zu 1,6–11,8% in vivo eingebaut. Von Aspergillus fumigatus und A. quadricinctus wurden zellfreie Extrakte hergestellt, die Cyclohexapeptide synthetisieren können.
    Notes: Abstract A 1.6–11.8% incorporation of labelled glycine and serine into ferrichrome, ferricrocin and ferrichrysin has been achieved with four strains of Aspergillus in vivo. Cell-free extracts of Aspergillus fumigatus and A. quadricinctus capable of cyclohexapeptide biosynthesis have been prepared.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 147 (1987), S. 240-244 
    ISSN: 1432-072X
    Keywords: Cytochrome P-450 ; Alkane hydroxylation ; Candida maltosa ; Carbon monoxide inhibition ; Oxygen limitation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A method for selective and reversible inhibition of the alkane hydroxylating cytochrome P-450 in growing yeast cells was developed. Using low concentrations of carbon monoxide in a specially adapted small-scale fermentor system a complete inhibition of the first step of alkane degradation was obtained, obviously without influencing further metabolic steps. Thus, fatty alcohols which were shown to be the immediate products of the cytochrome P-450 catalyzed reaction were utilized with unchanged rates by yeast cultures blocked with carbon monoxide in alkane degradation. Moreover, significant differences were found in the pO2-dependencies of utilization of n-alkanes, fatty alcohols and further intermediates. It was concluded, that the alkane hydroxylating cytochrome P-450 system is distinguished by the lowest oxygen affinity among the oxygen-activating enzyme systems involved in alkane assimilation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 147 (1987), S. 245-248 
    ISSN: 1432-072X
    Keywords: Candida maltosa ; Cytochrome P-450 ; Alkane hydroxylation ; Oxygen-limitation ; Carbon monoxide-inhibition ; Enzyme regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Transition of n-hexadecane utilizing cultures of Candida maltosa to oxygen-limited growth caused an up to 6-fold increase of the cellular cytochrome P-450 content. Enhanced cytochrome P-450 formation required protein de novo synthesis and was not due to a change of the apo/holo-enzyme ratio as demonstrated by cycloheximide inhibition and immunological quantitation. The effect of low oxygen concentration (pO2=3–5%) was simulated by selective inhibition of alkane hydroxylation with carbon monoxide (at a pO2 of 70–75%). Enhanced cytochrome P-450 formation occurred even when a constant growth rate was maintained through utilization of a second non-repressive growth substrate. However, the presence of n-alkanes was an essential precondition. It was concluded, that the cytochrome P-450 formation was mainly regulated by the intracellular inducer concentration which depends on the relative rates of alkane transport into the cell and the actual alkane hydroxylating activity of the enzyme system.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 391 (1981), S. 33-44 
    ISSN: 1432-2307
    Keywords: Carcinoid heart disease (carcinoid syndrome) ; Endocardial plaque ; Endocardial lesion ; Ultrastructure ; Myofibroblast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei einer 67jährigen Patientin mit einem metastasierenden Dünndarmcarcinoid fanden sich bei der Autopsie die für das Carcinoidsyndrom typischen Endokardveränderungen der rechten Herzhöhlen. Anhand dieses Falles und des Schrifttums wird über die Ultrastruktur der endokardialen Auflagerungen beim Carcinoidsyndrom berichtet. Charakteristisch für diese Auflagerungen ist die Proliferation von glatten Muskelzellen und Myofibroblasten, die von reichlich basalmembranähnlichem Material umgeben sind und vereinzelt durch Maculae adhärentes untereinander verbunden sind. Die Grundsubstanz ist aus sauren Mucopolysacchariden, normalen kollagenen Fibrillen und Mikrofibrillen aufgebaut. Die Verdickungen unterscheiden sich morphologisch von allen anderen Endokardveränderungen, unter anderem durch das Fehlen von amorphem Elastin. Ihre Entstehung im Zusammenhang mit der endokrinen Aktivität der Carcinoide wird diskutiert.
    Notes: Summary In a 67-year-old female patient with metastasising carcinoid of the small intestine there were right-sided endocardial plaques characteristic of the carcinoid syndrome. Ultrastructurally, the lesions showed proliferation of smooth muscle cells and myofibroblasts, which were surrounded by basementmembrane-like material and occasionally showed intercellular connections of the macula adhaerens type. The ground substance consisted of acid mucopolysaccharides, normal collagen fibrils, and microfibrils. The endocardial plaques in the carcinoid syndrome differ morphologically from other endocardial lesions by the lack of amorphous elastin. The formation of plaques and its relation to the endocrine activity of the carcinoid tumors is discussed, and pertinent literature is reviewed.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1612-1112
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary In the Department of Chemistry of the University of Hamburg a data processing system for automation of large analytical instruments is being installed at present. It consists of a central computer VARIAN V 73 and 5 satellites of the type VARIAN L-100 and NOVA 1200 respectively. In this article the deliberations upon which the configuration now being realized is based are shortly described. A detailed account is given of the status of installation and past experiences concerning the operation of large analytical instruments in combination with computers. Finally information is given about the development of the system planned for the future.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 179 (1950), S. 67-74 
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Der Plasmalogengehalt in den Epithelien des Genitaltractus der weißen Maus ist weitgehend abhängig von der Ovarialfunktion und stimmt besonders in der Uterusmucosa und in der Scheidenschleimhaut mit der Follikulinkurve überein.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 198 (1963), S. 175-181 
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung 1. Bis zur Ausbildung der Labyrinthplacenta findet eine ausschließliche cytotrophe bzw. histotrophe Ernährung des Embryo über die eiweißstoffwechselaktiven Trophoblastzellen sowie parietalen und visceralen Dottersackepithelien statt. Beide Organe dienen besonders der Eiweißresorption und -synthese und damit der Eiweißvermittlung. 2. Nach Ausbildung der Labyrinthplacenta tritt neben den noch bestehenbleibenden Nahrungsaufnahme- und -umwandlungsmechanismus durch die Dottersackplacenta der hämotrophe Ernährungsmodus über die Labyrinthplacenta. 3. Die Dottersackplacenta muß an Stelle der noch unreifen Leber als wesentliches Eiweißstoffwechselorgan für den Embryo und Feten gelten. Die gesamte Placenta dient damit viel wichtigeren Funktionen als nur der Passage von Nährstoffen.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 204 (1967), S. 163-164 
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1831
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Die Überführung von EA in EAC′1 bzw. von EAC′1 in EAC′1,4 zeitigt bei Verwendung von S35-markiertem Komplement eine nachweisbare Bindung von Material an die Zelle. Die Größe des Materialzuwachses ist von den Reaktionsbedingungen abhängig. Durch Behandlung von isotopen-markiertem EAC′1 mit dem EAC′1-Inaktivator kann gezeigt werden, daß die erste Komplementkomponente von der sensibilisierten Zelle abgesprengt und dann inaktiviert wird. Die Bedeutung dieser Befunde wird diskutiert.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 44 (1957), S. 392-393 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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