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  • 1980-1984  (3)
  • 1950-1954
  • Ehrlich ascites tumor  (2)
  • Computertomographie  (1)
  • 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
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 361 (1983), S. 913-913 
    ISSN: 1435-2451
    Keywords: Myastenia gravis ; Thymectomy ; Computed tomography ; Myasthenia gravis ; Thymektomie ; Computertomographie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei Patienten mit Myastenia gravis wird die Häufigkeit einer Thymushyperplasie mit 65%, von Thymustumoren mit 8–28% angegeben. Da sich selbst ein eindeutig veränderter Thymus dem klinischen Nachweis entziehen kann, hat die thorakale Computertomographie einen hohen diagnostischen Stellenwert. Die Indikation zur Thymektomie besteht bei erwachsenen Myastheniepatienten im computertomographischen Nachweis von Thymusgewebe. Für die zu fordernde komplette Entfernung des Thymusgewebes bevorzugen wir die mediane Sternotomie. Neurologische Nachbehandlung ist notwendig.
    Notes: Summary Among patients suffering from myasthenia gravis, thymic hyperplasia can be found in 65% and a tumor in 8%–28%. Clinical diagnosis can be difficult. Therefore, computed axial tomography is of great diagnostic importance. There is increasing evidence that a thymectomy should always be performed if thymic tissue can be shown by CAT scan to be present in the anterior mediastinum. As operative treatment we prefer a median sternotomy, which makes it easier to remove the thymus completely. Postoperatively the patients should be under neurological surveillance.
    Type of Medium: Electronic Resource
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