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  • 2005-2009  (2)
  • 1965-1969  (30)
  • 1930-1934  (3)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 34 (1969), S. 2615-2617 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 40 (1968), S. 2041-2042 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Berlin, Germany : Blackwell Verlag GmbH
    Anatomia, histologia, embryologia 34 (2005), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Bone marrow derived stromal cells are of mesenchymal origin and precursor cells for skeletal tissue components such as chondroblasts and osteoblasts. Furthermore, under experimental conditions, a differentiation potency into myogenic and neuronal cells could be demonstrated. Because of their multipotency these cells represent a population of non-haematogen stem cells that can be regarded as an alternative to human embryonic stem cells for future autologous cell replacement therapies. For a closer look at the differentiation capacity of these cells, rat and human bone marrow stromal cells were isolated from the femur bone and kept in the cell culture applying different cultivation protocols. In a cultivation medium with a serum content of 20%, the majority of these cells express a variety of neuronal markers such as ß-III Tubulin and NeuN as well as the astrocyte marker GFAP, while a minority of about 20% express the marker for neural precursor cells nestin. Cultivation in a chemically defined serum free medium results in the differentiation of a markedly higher percentage of nestin positive neural precursor-like cells. Using bFGF in combination with B27 these cells can be forced to form three dimensionally organized spheres. In order to elucidate a possible therapeutical potency of the bone marrow derived cells the synthesis of neurotrophic factors such as BDNF and NGF were analysed using the ELISA technique. Furthermore, they can be infected using a third generation adenoviral vector with high efficiency and show migratory activity in vitro. After injection of bone marrow derived mesenchymal stem cells into the lateral ventricle of adult rats they adhere to the ependymocytes and pass the ependymal barrier in order to settle in the subventricular space.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Berlin, Germany : Blackwell Verlag GmbH
    Anatomia, histologia, embryologia 34 (2005), S. 0 
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Brain injury remains a significant and potentially devastating outcome of cardiopulmonary bypass (CPB) under circulatory arrest. These outcomes caused by a microvasculature embolization are associated with increased mortality, longer hospital stays and increased use of intermediate or long term care facilities. The administration of heparin in heart surgery during deep hypothermic cardiopulmonary bypass is the basic prophylactic strategy for reducing or even preventing, microvasculature embolization. Unfortunately, an incidence of neuropsychological impairments (NPI) is found in as many as 25 % of the survivors. As it is suspected that these impairments are correlated with morphological alterations, in our study we use the GP IIb-IIIa receptor blocker Eptifibatide for the inhibition of platelet aggregation, in order to look for a reduction of tissue damage compared to the standard treatment. Two groups of 11 piglets (mean body weight of 15±5 kg) underwent 10-minute normothermic bypass, 40-minute cooling on cardiopulmonary bypass, 60-minutes deep hypothermic circulatory arrest (DHCA) at 15°C, and 40-minute rewarming to 37°C. Group 1 was treated only with unfractionated heparin (UFH), whereas Group 2 was medicated with Eptifibatide, in addition to the UFH-treatment group 1. After rewarming, all animals underwent bilateral carotid perfusion with 4% paraformaldehyde. Histological investigations of semi thin sections reveal a marked decrease of hippocampal alterations by using the GP IIb-IIIa receptor blocker in addition to standard UFH treatment. We detect a reduction of degenerative areas in perivascular (vessels with 10–30 μm in diameter) tissue. These semi-quantitative data are confirmed by ultrastructural findings.
    Type of Medium: Electronic Resource
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  • 5
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    Unknown
    Berlin : Periodicals Archive Online (PAO)
    Kant-Studien. 60:2 (1969) 183 
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 60 (1967), S. 1-5 
    ISSN: 1437-1596
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Summary A simplified method for thin-layer chromatography (T.L.C.) in glass tubes is described, showing the following advantages: 1. Due to the accurate adjustment of the water content of the layer, the Rf values are better reproducible than with the conventional techniques. 2. Activated at the desired temperatures the ready-coated tubes (inactive tubes) allow the selection of the most favorable separating conditions. 3. Owing to the standardized conditions it is possible to directly compare the results of different tets. Both the coated, activated, and air-dry tubes and the necessary accessories are available from C. Desaga, Heidelberg, Germany.
    Notes: Zusammenfassung Es wird eine einfache Methode der Dünnschichtchromatographie in Glasröhren (Tubes) mit folgenden Vorteilen beschrieben: 1. Durch die exakte Einstellbarkeit des Wassergehaltes der Schicht sind die Rf-Werte besser als mit den bisher üblichen Methoden reproduzierbar. 2. Die vorgefertigten beschichteten Röhrchen (inaktive Tubes) ermöglichen, bei verschiedenen Temperaturen aktiviert, die Auswahl jeweils günstigster Trennungsbedingungen. 3. Die standardisierten Bedingungen erlauben den unmittelbaren Vergleich der Ergebnisse verschiedener Untersuchungen. Die beschichteten, aktivierten und lufttrockenen tubes sowie das nötige Zubehör können jetzt von C. Desaga (Heidelberg) bezogen werden.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Basic research in cardiology 59 (1969), S. 235-259 
    ISSN: 1435-1803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 346 (1969), S. 1-14 
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die feinstrukturelle Untersuchung von 2 Speichelgangcarcinomen der Gl. parotis des Menschen zeigt, daß in diesen Geschwülsten Zellen vorkommen, deren feinstrukturelle Organisation derjenigen der Myoepithelien der Speicheldrüsen und anderer Organe völlig gleicht. Die übrigen Geschwulstzellen weisen trotz abweichender Form und Lage viele ultrastrukturelle Gemeinsamkeiten mit den Myoepithelzellen auf, während andererseits auch Zeichen einer gewissen sekretorischen Tätigkeit erkennbar sind. Wegen dieser cytologischen Eigenart können die Speichelgangcarcinome vom pluripotenten Epithel der Speicheldrüsengänge abgeleitet werden. Der durch das Vorkommen der Myoepithelien bedingte organoide Aufbau der Geschwülste erlaubt eine Abgrenzung von anderen Speicheldrüsentumoren. Die auffallende Ähnlichkeit der Speichelgangcarcinome mit den Milchgangcarcinomen der menschlichen Brustdrüse ist auch im Bereich der Feinstruktur nachweisbar. — Die feinstrukturelle Untersuchung der Speichelgangcarcinome hat somit weitere wichtige Belege dafür beigebracht, daß diese Geschwülste eine besondere Gruppe von Speicheldrüsentumoren darstellen.
    Notes: Summary Fine structural investigation of two human salivary duct carcinomas revealed typical myoepithelial cells which resembled the myoepithelium of salivary glands. The epithelial cells of the salivary-duct carcinomas also showed some similarities to the myoepithelial cells. It is assumed that the salivary duct carcinomas, which have a fine structural organization strikingly like that of the duct carcinomas of the human mammary gland, originate from the pluripotential epithelium of the salivary ducts.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 192 (1968), S. 100-115 
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In Analogie zu den Milchgangcarcinomen der Mamma wird eine Gruppe von Speicheldrusentumoren beschrieben, die im morphologischen Aufbau und im Wachstumsverhalten mit den Milchgangcarcinomen weitgehend über einstimmen. Auch bei den Speichelgangcarcinomen kann man sogenannte Comedo-carcinome, intraduktale Papillome und papilläre Carcinome Bowie Geschwülste, die einer fibrosierenden Adenose der Brustdrüse gleichen, morphologisch unterscheiden. Gemeinsam ist diesen Tumoren die Zusammensetzung aus wuchernden, oft schleimbildenden Gangepithelien und aus Myoepithelien, die aber nur die organoiden Strukturen vervollständigen. Speichelgangcarcinome sind selten (etwa 1% unserer Sammlung von Speicheldrusentumoren), sie treten vor allem bei älteren Personen auf. Es gibt rasch wachsende, lymphogen und hämatogen metastasierende Speichelgangcarcinome neben sehr langsam wachsenden, relativ „gutartig” verlaufenden Tumoren.
    Notes: Summary A special group of tumors in the parotid gland is described which shows striking similarities with the duct carcinomas of the mammary gland. In these duct carcinomas of the salivary gland we found the same variations (comedo-carcinomas, intraductal papillomas, papillary carcinomas and fibrotic adenosis) as in the above mentioned mammary tumors. The intraductal carcinomas consist of proliferating occasionally mucous producing epithelial cells and of myoepithelial basket cells. The latter however are only of minor importance and are found in the typical basal position of the epithelial formations. Intraductal salivary carcinomas account for about 1 % of salivary gland tumors and occur predominantly in elderly people. In some cases these tumors involve rapid growth, with hematogeneous and lymphogeneous metastasis, while others grow very slowly.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 61 (1968), S. 137-147 
    ISSN: 1437-1596
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Summary (1) A gel electrophoretic micro-method suitable for the identification of traces, in particular of blood and tissue, should meet two requirements: (a) protein separation must be as complete as in usual gel electrophoresis and, in the case of serum, practicable to 1μ lit; (b) indication of the more important ferments must be possible with usual histochemical methods and, in the case of blood and tissue, even that of the esterases. (2) Following a survey of the known gel electrophoretic micro-methods, tests to find a suitable method are reported: (a) A method using a thin layer of starch gel on a glass slab in a closed chamber is described including further technical details; protein separation is satisfactory and serum ferments can be identified; (b) the identification limit is about 1μ lit. of serum. (3) Experience gained in the use of a vertical micro-method with an aeryl amide gel is reported. (4) More than 770 serums, which were examined by the histochemical method ofMarkert andHunter, were used for testing the two methods: (a) Every time 4 eserin-sensitive esterases were identified; (b) in 30 serums the eserin-sensitive esterase known as variant C 5 was identified. (5) The micro-method described permits the identification of eserin-sensitive esterases and hence, owing to their characteristic features, of human blood in traces of a minimum of 1μ lit.
    Notes: Zusammenfassung 1. Eine zum Spurennachweis — vor allem von Blut und Geweben — geeignete Mikromethode der Gelelektrophorese müßte zwei Bedingungen erfüllen: a) Die Trennung der Proteine sollte nicht weniger vollständig als in üblicher Gelelektrophorese und, bei Serum, bis zu 1μl geeignet sein; b) die Darstellung der wichtigsten Fermente sollte mit in der Histochemie üblichen Methoden, bei Blut und Geweben auch der Nachweis der Esterasen möglich sein. 2. Nach einem Überblick über die bisher bekannten Mikromethoden der Gelelektrophorese wird über Versuche, eine geeignete Methode zu entwickeln, berichtet: a) Es wird eine Dünnschicht-Stärkegelmethode auf Glasplatte in geschlossener Kammer einschließlich weiterer technischer Einzelheiten angegeben; sie erlaubt eine befriedigende Proteintrennung und den Nachweis von Serumfermenten; b) die Nachweisgrenze liegt bei etwa 1μl Serum. 3. Es wird über Erfahrungen mit einer vertikalen Mikromethode in einem Äcrylamidgel berichtet. 4. Zur praktischen Erprobung beider Methoden wird über 770 Seren, die nach der histochemischen Methode vonMarkert undHunter untersucht wurden, berichtet: a) Es konnten regelmäßig vier eserin-empfindliche Esterasen nachgewiesen werden; b) in 30 Seren war die als Variante C 5 bezeichnete eserinempfindliche Esterase nachweisbar. 5. Die beschriebene Mikromethode ermöglicht den Nachweis eserin-empfindlicher Esterasen und somit, auf Grund ihres charakteristischen Musters, die Bestimmung von Menschenblut in Spuren bis 1μl.
    Type of Medium: Electronic Resource
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