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  • 1
    ISSN: 1432-1440
    Keywords: Haarzelleukämie ; IFN-Therapie ; Zellmarker ; Thymidineinbau
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In einer multizentrischen „open label“ Studie mit IFN-α2b wurden 85 Patienten mit Haarzell-Leukämie behandelt und ausgewertet. Die Induktionsbehandlung bestand in 2 × 106 E IFN-α2b/m2, 3 × wöchentlich, s.c. Die Ergebnisse zeigen die hohe Effektivität der Substanz, wobei unter den verwendeten Dosierungen geringe, gut tolerierbare und passagere Nebenwirkungen im Sinne eines grippeähnlichen Syndroms auftraten. Die Prozentzahl der Remissionen (CR + PR + MR) nach sechsmonatiger Behandlungszeit lag bei 89%, der Anteil von CR betrug 4%, von PR 69%. An einer kleinen Gruppe (4 Patienten) wurde nach Erzielen einer CR oder PR der Effekt unterschiedlicher Formen der Erhaltungstherapie getestet. Die bisherigen, statistisch noch nicht auswertbaren Resultate sprechen dafür, daß bei Auftreten eines Rückfalles nach Aussetzen oder Verringerung der IFN-Dosis (3 × 106 I.E., s.c., 1 × wöchentlich) durch Wiedereinsetzen oder Erhöhung von IFN-α2 neuerlich Remissionen erzielt werden können. Zur Erhaltung der Remissionen dürfte eine IFN-Dauertherapie notwendig sein. Mittels eines Kurzzeit in vitro Tests werde der Effekt von Interferon α2 auf die Inkorporation von H3-Thymidin und H3-Uridin in Haarzellen bestimmt. Für beide Präkursoren ergab sich keine Hemmung des Einbaues. Allerdings zeigte eine Langzeitinkubation (48 h) einen signifikant vermehrten H3-Uridin Einbau, während der H3-Thymidin Einbau unbeeinflußt blieb. Diese Resultate sprechen gegen einen unmittelbaren antiproliferativen Effekt von IFN-α2 auf Haarzellen, sie weisen aber auf eine Induktion der RNS-Synthese hin. Eine Zellmarker-Analyse der Haarzellen mit monoklonalen Antikörpern vor und während einer 7tägigen in vitro Behandlung mit IFN-α2 ergab keine Änderung des Phänotyps, so daß eine differenzierende Wirkung des IFN auf Haarzellen nicht beobachtet werden konnte.
    Notes: Summary Eighty-five patients with hairy-cell leukemia were treated in a multicentric “open label” study with IFN-α2b and evaluated. Induction therapy was 2 × 106 U IFN-α2b/m2, 3 times a week, s.c. The results show this regimen to be highly effective with only a few tolerable and transient side effects consisting mainly of flu-like symptoms. After 6 months of therapy 4% CR, 69% PR, and 16% MR, were noted. In a small group of four patients who had achieved CR or PR, we tested the effect of varying doses for maintenance therapy. Our preliminary results indicate that a relapse caused by interruption of IFN therapy or dose reduction to 3 × 106 U given once a week, o.c. could be successfully treated by readministration, or escalating the dosage of IFN. It seems that remission maintenance requires long-term treatment with IFN. In a short-term in vitro test we studied the effect of IFN-α2 on the incorporation of3H-thymidine and3H-uridine into hairy cells of five patients. Fort both precursors no appreciable effect was detected. However, after prolonged incubation for 48 h, a significant enhancement of3H-uridine incorporation was observed, while3H-thymidine incorporation remained unaffected. Cell marker analysis performed with monoclonal antibodies before and after incubation of hairy cells with IFN-α2 for up to 7 days did not reveal any change of the phenotype of hairy cells.
    Type of Medium: Electronic Resource
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  • 2
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    Berlin : Periodicals Archive Online (PAO)
    Orientalistische Literaturzeitung. 26 (1923) 282 
    ISSN: 0030-5383
    Topics: Linguistics and Literary Studies , Ethnic Sciences , History
    Notes: Besprechungen
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  • 3
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    Berlin : Periodicals Archive Online (PAO)
    Orientalistische Literaturzeitung. 30 (1927) 12 
    ISSN: 0030-5383
    Topics: Linguistics and Literary Studies , Ethnic Sciences , History
    Notes: Besprechungen
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  • 4
    ISSN: 1573-2649
    Keywords: Haematology ; multilingual questionnaire ; quality of health ; quality of life
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract International cooperative clinical trials require a multilingual quality of life questionnaire. The ‘International Society for Chemo- and Immunotherapy’ therefore designed a study to develop and test a ‘health accentuated’ quality of life questionnaire in the eight languages spoken in this society. The objective was to examine practicability, reliability and interlingual homogeneity. Versions of the questionnaire in Czech, German, Hungarian, Italian, Kroatian, Polish, Romanian and Slovakian have been prepared. The results are based on data of 1,104 adult patients. They demonstrate that the developed questionnaire is practicable. Patients need 10–15 min to answer it, usually without assistance. The proportion of missing values is for all but two questions less than 3%. The questionnaire also found high acceptance reflected by only 2.7% refusals. It is reasonably reliable in each language. Interlingual homogeneity could be shown by demonstration of strong structural similarities between the different versions using multidimensional scaling, factor analysis and comparison of mean profiles.
    Type of Medium: Electronic Resource
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