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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
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 135 (1996), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Scleromyxoedema, a disseminated papular and sclerotic variant of lichen myxoedematosus, is a rare disease with a chronic progressive course, and little tendency towards spontaneous remission. The treatment of scleromyxoedema has been largely ineffective. Aggressive chemotherapeutic agents have been used, often leading to therapy-related morbidity and mortality. We report a 41-year-old woman with scleromyxoedema, associated with a monoclonal gammopathy of IgG-k type, whose condition almost completely cleared with 12 monthly sessions of extracorporeal photopheresis. The patient had previously not responded to isotretinoin, and chlorambucil with prednisolone.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Photochemotherapie ; Extrakorporale Photopherese ; Kutane T-Zell Lymphome ; Progressive systematische Sklerodermie ; Graft versus host Krankheit ; Key words Photochemotherapy ; Extracorporeal photopheresis ; Cutaneous T-cell lymphoma ; Progressive systemic scleroderma ; Graft-versus-host disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Extracorporeal photophoresis (ECP), a therapeutic modality that has been under investigation for some years, is based on separation of a leucocyte/lymphocyte-enriched cell fraction from the peripheral blood, extracorporeal treatment of the cells with 8-MOP/UVA and subsequent reinfusion of the cells in the patient. Its main effects seem to consist in changes to the immunologic behaviour of the photoinactivated/modulated cells. The immune response of the host is obviously stimulated by this treatment. ECP is normally performed for 4 h per day on 2 consecutive days every 4 weeks. The treatment is well tolerated and causes few side effects. In our department, 1210 ECP treatments were administered to 41 patients between 1990 and 1994 and a preliminary evaluation was performed. These patients included 21 with cutaneous T-cell lymphoma (CTCL), 10 with progressive systemic scleroderma, 4 with chronic graft-versus-host disease and 1 each with pemphigus vulgaris, epidermolysis bullosa acquisita, lupus erythematosus and cutaneous mucinosis. Patients with erythroderma and preserved immunocompetence achieved the best responses of all patients with CTCL. A treatment combining ECP with rlFN-α, PUVA and/or radiation was also successful in patients with tumour-stage CTCL and lymph node involvement. Progressive systemic scleroderma responded in more than 50% of our cases. Treatment results were impressive in 4 patients with chronic graft-versus-host disease presenting with sclerodermatous and lichenoid changes of the skin and mucous membranes. A clear improvement was also observed in the patient with pemphigus vulgaris refractory to standard therapies and in another patient with scleromyxoedema (Arndt-Gottron syndrome). The effectiveness of ECP seems to be quite well established in CTCL, but remains to be examined in autoimmune dermatoses. ECP is an attractive addition to the dermatological therapies available but our experience is still preliminary.
    Notes: Zusammenfassung Die Extrakorporale Photopherese (ECP) stellt ein seit fast 10 Jahren geübtes und inzwischen erprobtes Behandlungsverfahren dar, bei dem eine leukozytenangereicherte Zellfraktion aus dem peripheren Blut separiert, extrakorporal mit 8-MOP/UVA behandelt und anschließend dem Patienten reinfundiert wird. Hierbei werden Änderungen des immunologischen Verhaltens der photoinaktivierten und -modulierten Zellen bewirkt, die nach Reinfusion eine Immunantwort des Körpers induzieren sollen. Die ECP wird in der Regel in 4-wöchigen Abständen an 2 aufeinanderfolgenden Tagen über jeweils 4 Stunden durchgeführt. Sie ist gut verträglich und nebenwirkungsarm. Wir haben 1990 bis 1994 1210 ECP-Behandlungen bei 41 Hautkranken durchgeführt und vorläufig ausgewertet, darunter 21 Patienten mit kutanem T-Zell-Lymphom, 10 mit progressiver systemischer Sklerodermie und 4 mit chronischer Graft-versus-Host-Krankheit. CTCL-Patienten mit Erythrodermie und erhaltener Immunkompetenz sprachen am besten auf die ECP an. Im Rahmen einer Kombinationsbehandlung mit rIFN-α, PUVA und/oder lokaler Röntgenbestrahlung ließen sich auch fortgeschrittene CTCL im Tumorstadium mit LK-Befall erfolgreich mittels ECP angehen. Die Hälfte der Patienten mit PSS im aktiven Stadium spricht sehr gut an. Eindrucksvoll ist die Besserung der GvH-Krankheit mit sklerodermiformen Veränderungen. Kasuistische Erfahrungen mit günstigem Erfolg liegen uns bei Pemphigus vulgaris, Epidermolysis bullosa acquisita, Lupus erythematodes, kutaner Muzinose und Sklermyxödem Arndt-Gottron vor. Insgesamt dürfte die Wirkung der ECP bei cTCL und GvHD als weitgehend gesichert gelten, hingegen ist die Wirksamkeit bei Autoimmundermatosen noch weiter zu untermauern. Das Spektrum der Dermatotherapie erweitert sich durch das Verfahren der ECP erheblich.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of toxicology 25 (1969), S. 329-332 
    ISSN: 1432-0738
    Keywords: Organophosphate Poisoning ; Paraoxone ; E 600 ; Esterase Reactivating Substances ; Oxime Therapy ; Organophosphatvergiftung ; Paraoxon ; E 600 ; Esterasereaktivatoren ; Oximtherapie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird ein akuter Fall von einer oralen Paraoxon- (E 600)-Vergiftung (Selbstmordversuch) und ihre Behandlung beschrieben. Die Anwendung von Cholinesterase-Reaktivatoren und Reanimationsverfahren hat eine erfolgreiche Beherrschung der sehr schweren Vergiftung, ohne Verabreichung von großen Atropindosen, gestattet. Die Fragen die mit der Behandlung von Organophosphat-vergiftungen mit Oximen verbunden sind, werden hingewiesen.
    Notes: Summary A case of acute oral suicidal poisoning with paraoxone (E 600) and its treatment are described. The use of cholinesterase-reactivating substances and reanimation procedures achieved full success, even without a high dosage of atropine, in the treatment of that very serious poisoning. The problems concerned with the use of oximes in the therapy of organophosphate poisoning are discussed.
    Type of Medium: Electronic Resource
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