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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 106 (1983), S. 44-52 
    ISSN: 1432-1335
    Keywords: Metallocene dichlorides ; cis-Diammine-dichloroplatinum(II) ; Ehrlich ascites tumor ; Cytokinetics in vitro
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The influence of in vitro application of the cytostatic agents titanocene dichloride (TDC), vanadocene dichloride (VDC), and cis-diamminedichloroplatinum(II) (DDP) on the cytokinetic behavior of EAT cells was investigated. All three substances induced similar cytokinetic phenomena that are characterized on the one hand, by an accumulation of cells in the late S phase and in the G2 phase during exposure periods of 8 to 20 h. On the other hand, some cells were apparently arrested at the end of the G1 phase and, after removal of the cytostatic agents, moved through the following S, G2, and M phases as synchronized cell populations. In view of this unusual cytokinetic pattern of multiple effects, it is argued that the striking similarities in cytokinetic behavior after treatment with the three different cytostatic substances indicate analogies in their molecular mechanisms of action. The different alteration patterns observed after in vivo application of the drugs are obviously due to additional processes occurring only in vivo.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 102 (1981), S. 21-30 
    ISSN: 1432-1335
    Keywords: cis-Diamminedichloroplatinum(II) ; Titanocene dichloride ; Vanadocene dichloride ; Ehrlich ascites tumor ; Pulse-cytophotometry ; cis-Diammindichloroplatin(II) ; Titanocen-dichlorid ; Vanadocen-dichlorid ; Ehrlich-Aszites-Tumor ; Impulscytophotometrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Gegenstand der Untersuchungen ist der Einfluß einer in-vivo-Behandlung mit optimal tumorhemmenden Dosen von cis-Diammindichloroplatin(II) (DDP), Titanocen-dichlorid (TDC) und Vanadocen-dichlorid (VDC) auf das impulscytophotometrisch bestimmte DNA-Verteilungsmuster und die Mitoseaktivität von EAT-Zellen. Während DDP eine sofortige und langandauernde Unterdrückung der Zellteilungen, jedoch keine Veränderung des zellkinetischen Verhaltens von EAT-Zellen bewirkt, verursacht TDC die Ausbildung eines deutlichen,: 10–12 h nach Behandlung maximalen G2-Blocks. Im Falle von DDP und TDC werden die Tumorzellen einige Tage nach Behandlung durch Zellen des wirtstiereigenen Abwehrsystems beseitig. VDC hingegen ruft die Entstehung teilsynchroner Wellen nach einer vorübergehenden Mitosehemmung und einer reversiblen Zellakkumulation in der späten S-und der G2-Phase hervor. Darüber hinaus werden 5–16% der Zellen nach VDC-Behandlung polyploid.
    Notes: Summary The influence of an in vivo treatment with optimally tumor-inhibiting doses of cis-diamminedichloroplatinum(II) (DDP), titanocene dichloride (TDC), and vanadocene dichloride (VDC) on the DNA distribution pattern, determined by pulse-cytophotometry, and on the, mitotic activity of EAT cells is investigated. Whereas DDP causes an immediate and, long-lasting decrease of mitoses but no disturbances of the EAT cell kinetics, a marked G2 block with a maximum at 10–12 h a. t. and an irreversible and extensive mitotic depression is evoked by TDC. In the case of DDP and TDC, the tumor cells are removed several days a. t. by cells belonging to the defensive system of the host animals. In contrast, VDC induces partially synchronized waves after a transient suppression of mitoses and reversible cell accumulation in the late S and in the G2 phases. Additionally, 5–16% of the cells become polyploid after VDC treatment.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1433-8580
    Keywords: Renal transplantation ; Graft rejection ; Platelet thrombi ; Antiaggregating drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of antiaggregating agents - acetylsalicyclic acid (ASA) and dipyridamol - on the rejection of allotransplanted canine kidneys in presensitized animals were studied. Blood flow dropped more markedly in the control group than in the group treated with ASA and dipyridamol. 24 hours after transplantation the blood flow in this group was significantly higher than in the control group (p 2,5 %) and in the third group treated with dipyridamol alone. The cellular rejection started earlier and was more pronounced in the control group. Only in this group vascular rejection and microthrombi were demonstrated. Urine output ceased 24 to 60 hours after transplantation. The immunosuppressive, antiphlogistic and platelet antiaggregating effect of the combined ASA and dipyridamol therapy is thought to be responsible for the better results in this group. In this experimental model the combined treatment of ASA and dipyridamol results in a later onset of cellular rejection, in better blood-flow of the kidney and later onset of anuria.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1433-8580
    Keywords: Renal transplantation ; Graft rejection ; Platelet thrombi ; Antiaggregating drugs ; Nierentransplantation ; Transplantatabstoßung ; Thrombocytenthromben ; Thrombocytenaggregationshemmende Pharmaka
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Thrombocytenaggregationshemmende Pharmaka — Acetylsalicylsäure und 2-Piperazinyl-4-thiomorpholino-pyrido(3,2-d)-pyrimidin-Sulfattrihydrat—werden in ihrer Wirkung auf Abstoßungsreaktionen bei allotransplantierten Nieren an Hunden untersucht. Klinisch findet sich keine Wirksamkeit der Medikamente, dagegen zeigen interessanterweise die histologischen Befunde bei der Acetylsalicylsäuregruppe eine verminderte Abstoßungsreaktion.
    Notes: Summary The effects of anti-thrombotic drugs—Acetyl-salicylic-acid and 2-Piperazinyl-4-thiomorpholino-pyrido(3,2-d)-pyrimidin-sulfat-trihydrat—on rejection reactions of renal allografts in dogs have been studied. From the clinical point of view no effectiveness of the two drugs can be found, whereas the histological findings do clearly show diminished rejection reactions in the Acetylsalicylic-acid group.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chalcogenide Glasses with Organic Components. V. The Reactivity in the Glass-forming Systems Selenium, Arsenic, Bromine, 4,4′-Bis(selenenylbromido)azobenzene and Selenium, Arsenic, Iodine, 4,4′-Bis(diiodarsa)biphenyleneSe—As—Br glasses and 4,4′-bis(selenenylbromido)azobenzene react in the solid state. In this case arsenic is an acceptor for bromine, and azobenzene groups will be linked via poly-selenide groups with the glass matrix. The reaction is proved by DTA. At elevated temperatures, the selenium-carbon bond will be replaced by a carbon-bromine link yielding 4,4′-dibromazobenzene. Solid 4,4′-bis(diiodarsa)biphenylene shows a similar reaction with Se—As—I above TG. The pyrolysis takes place at higher temperatures.
    Notes: Gläser des Systems Se—As—Br reagieren im festen Zustand mit 4,4′-Bis-(selenenylbromido)azobenzol. Dabei wirkt Arsen als Bromakzeptor, und die Azobenzolgruppen werden über Polyselenidgruppen mit der Glasmatrix verknüpft. Die Reaktion wurde differentialthermoanalytisch verfolgt. Bei höheren Temperaturen werden die Selen-Kohlenstoff-Bindungen durch Brom-Kohlenstoff-Bindungen ersetzt. 4,4′-Dibromazobenzol kann durch Sublimation isoliert werden. Festes 4,4′-Bis(dijodarsa)biphenyl reagiert in analoger Weise mit unterkühlten Selen-Arsen-Jod-Schmelzen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 65 (1993), S. 1116-1117 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 70 (1998), S. 1198-1199 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 68 (1996), S. 1100-1101 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 44 (1972), S. 600-600 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 11 (1875), S. 57-63 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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