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  • 1
    ISSN: 1432-1041
    Keywords: Agranulocytosis ; OPC-8212 ; quinolinone derivative ; 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]-2(1H)- quinolinone ; bone-marrow progenitor cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary 3,4-dihydro-6-[4-(3,4-dimethoxybenzoyl)-1-piperazinyl]-2(1H)-quinolinone (OPC-8212) is a quinolinone derivative with positive inotropic properties. In order to elucidate the effect of OPC-8212 on the haemopoietic system we studied its in vitro effect on bone-marrow progenitor cells (granulocyte/monocyte colonyforming units [CFU-GM] and erythroid burst-forming units [BFU-E]), on the proliferation and secretion of granulocyte/monocyte colony-stimulating factor (GM-CSF) and interferon-γ (IFN-γ) by peripheral lymphocytes, and on GM-CSF secretion by fibroblasts from healthy individuals. The dose-effect relations of OPC-8212 on CFU-GM proliferation and on lymphocytic GM-CSF secretion showed no effect at very low drug concentrations, with a threshold at the lower end of the therapeutic range and highly significant dose-dependent inhibition at concentrations above that threshold. BFU-E, peripheral lymphocyte proliferation and lymphocytic IFN-γ secretion were depressed, although to a lesser extent, in a linear dose-dependent fashion. OPC-8212 did not affect GM-CSF secretion by one strain of fibroblasts but reduced it at higher concentrations in assays with another strain of cells. We conclude that direct toxic effects on bone-marrow progenitor cells, in combination with the inhibition of cytokines involved in the regulation of haemopoiesis in certain susceptible individuals, may be responsible for idiosyncratic reactions to OPC-8212.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 361 (1983), S. 653-655 
    ISSN: 1435-2451
    Keywords: Cervical biopsy ; Neurological complications ; Suitable anaesthesia ; Probeexcision im Halsbereich ; Neurologische Komplikationen ; Geeignete Anaesthesie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 433 Patienten mit Probeexcision im Bereich des Halses fanden sich neben Lymphadenitiden in erster Linie hämatologische Malignome und Metastasen maligner Tumoren. In 4,8 % traten behandlungsbedürftige Komplikationen auf, zum einen Wundheilungsstörungen (Hämatome, Entzündungen), zum zweiten neurologische Komplikationen des Nervus accessorius. Bei 4 Patienten bildeten sich diese vollständig zurück, einmal blieb eine Parese des Musculus deltoideus bestehen. Die Analyse des Krankengutes läßt erkennen, daß vor allem ungeeignete Narkoseverfahren (Lokalanaesthesie) bei in der Tiefe gelegenen, schlecht abgrenzbaren Tumoren zu Komplikationen geführt hatten.
    Notes: Summary In 433 cervical biopsies lymphadenitis, metastases of malignant tumors and of the haematologic system could be found first of all. In 4.8 % complications needed a further treatment, firstly trouble in wound healing (haematoma, inflammation), secondly neurological complications of the accessorial nerve. These complications receded in 4 patients completely, in one patient a paralysis of the deltoid muscle continued. The analysis of our patients suggested that unsuitable anaesthesia (local anaesthesia) for deeper-seated, badly demarked tumors is responsible for most of the complications.
    Type of Medium: Electronic Resource
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