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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Journal of molecular medicine 51 (1973), S. 730-734 
    ISSN: 1432-1440
    Schlagwort(e): Leukocytes ; Leukemia ; RNA-polymerase ; RNA-metabolism ; Leukocyten ; Leukämie ; RNS-Polymerase ; RNS-Stoffwechsel
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Lymphocyten und Leukocyten (Lymphocyten + Granulocyten) werden aus 10–40 ml heparinisiertem Venenblut isoliert, homogenisiert und 15 min bei 1000 g zentrifugiert. In dem aus Zellkernen und Kerntrümmern bestehenden Sediment lassen sich nach Resuspension ca. 70% der DNA-abhängigen RNS-Polymerase-Aktivität des Homogenats nachweisen. Die Reaktion ist von zugesetzter DNS und der Gegenwart aller vier Ribonucleosid-Triphosphate abhängig. Bei chronisch lymphatischer Leukämie, chronisch myeloischer Leukämie und Morbus Hodgkin findet sich unter diesen Bedingungen eine höhere spezifische Aktivität der DNS-abhängigen RNS-Polymerase als bei Normalpersonen.
    Notizen: Summary Lymphocytes and leukocytes (lymphocytes + granulocytes), isolated from 10–40 ml of heparinized venous blood, are homogenized, and centrifuged for 15 min at 1000 g. The resuspended pellet, consisting of nuclei and nuclear debris, exhibits ca. 70% of the DNA-depenent RNA polymerase activity of the homogenate. The reaction depends on added DNA template and the presence of all four ribonucleoside triphosphates. In chronic lymphatic leukaemia, chronic myelocytic leukemia, and Hodgkin's disease, the activity of the DNA-dependent RNA polymerase is higher than in normal controls.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of molecular medicine 53 (1975), S. 311-316 
    ISSN: 1432-1440
    Schlagwort(e): DNA-dependent RNA polymerases ; leukemia ; prognostic factors ; DNS-abhängige RNS-Polymerasen ; Leukämie ; prognostische Kriterien
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Die spezifischen Aktivitäten der DNS-abhängigen RNS-Polymerasen A und B wurden in von exogener Matrizen-DNS abhängiger Form bei verschiedenen Hämoblastosen bestimmt. Die Aktivitätsbestimmungen erfolgten in Kernhomogenaten isolierter mononucleärer oder segmentkerniger Leukocyten. Eine signifikante Erhöhung der Polymeraseaktivitäten A und B fand sich in den Kernhomogenaten mononucleärer Zellen bei akuter myeloischer Leukämie, während diese bei chronisch-myeloischer Leukämie (signifikant) und chronisch-lymphatischer Leukämie (nicht signifikant) erniedrigt waren. Unter cytostatischer Therapie findet sich eine Angleichung der Polymeraseaktivitäten an den Normbereich. Hiermit ergeben sich möglicherweise neue Kriterien zur Verlaufsbeurteilung von Hämoblastosen unter einer Polychemotherapie.
    Notizen: Summary Specific Activities of DNA-dependent RNA polymerases A and B have been determined in nuclei from leukocytes in acute and chronic leukemia. Enzyme activities, dependent on exogenous DNA template, were determined in homogenates of nuclei from isolated mononuclear cells or from isolated granulocytes. Activities of polymerases A and B have been found significantly elevated in homogenates of nuclei from mononuclear cells in acute myelocytic leukemia, while they were found subnormal in corresponding cell fractions from chronic myelocytic leukemia and chronic lymphatic leukemia. During cytostatic treatment polymerase activities were approaching normal values. The prognostic relevance of these data for the course of human leukemia is discussed.
    Materialart: Digitale Medien
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  • 3
    ISSN: 1279-8509
    Schlagwort(e): Autologous bone marrow transplantation ; Autologous peripheral blood stem cell transplantation ; High-dose chemotherapy ; Second primary neoplasms
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We treated 500 patients with high-dose chemotherapy and autologous bone marrow or autologous peripheral blood stem cell transplantation. Treated conditions included leukemia, lymphoma, breast cancer, lung cancer, germ-cell carcinoma, and other solid tumors. 10/500 (2%) of patients were treated for a second malignancy diagnosed 12 months to 25 years after their initial neoplasm. Four of these ten patients are in complete remission (CR) of both malignancies at a median follow-up of 29+ months after high-dose chemotherapy and autotransplantation. None of these patients would have been eligible for high-dose chemotherapy and autotransplantation by conventional selection criteria which usually exclude patients with a history of prior malignancies. Conclusion. Conventional exclusion criteria for high-dose chemotherapy and autotransplantation may not adequately reflect the prognosis of patients with second or secondary malignancies treated with this therapeutic modality. High-dose chemotherapy and autologous hematopoietic stem cell transplantation may be of true benfit in selected cases of secondary malignancies.
    Materialart: Digitale Medien
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  • 4
    ISSN: 1432-0584
    Schlagwort(e): Key words Autologous bone marrow transplantation ; Autologous peripheral blood stem cell transplantation ; High-dose chemotherapy ; Second and secondary primary neoplasms
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  We treated 500 patients with high-dose chemotherapy (HDC) and autologous bone marrow (ABMT) or autologous peripheral blood stem cell transplantation (PBSCT). Treated conditions included leukemia, lymphomas, breast cancer, lung cancer, germ-cell carcinomas, and other solid tumors. In order to assess relapse of primary malignancy or occurrence of new neoplasms, routine screening after ABMT or PBPCT was performed at regular and close intervals. With a total follow-up of 1358 person-years and a median follow-up of 34 months (range 9–91), 10/500 (2%) patients developed second malignancies after PBSCT or ABMT; i.e., one new cancer occurred every 136 person-years. All malignancies were detected at routine follow-up examinations; and 7/10 diagnoses were made in an asymptomatic phase; 6/10 neoplasms were amenable to complete surgical resection, five of which remain in CR at a median of 23+ months after autotransplantation. We conclude that regular and close follow-up examination of patients after autologous hematopoietic stem cell transplantation may be beneficial, since successful treatment of second malignancies is possible in selected cases after early detection.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    ISSN: 1569-8041
    Schlagwort(e): chemotherapy ; hematopoietic growth-factor support ; high-dose chemotherapy ; non-small-cell lung cancer ; peripheral blood stem cell transplantation ; treatment toxicity and mortality
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Background: We conducted a phase I/II trial to assess the feasibilityand activity of combination chemotherapy with etoposide, ifosfamide,cisplatin, and epirubicin in limited-stage (LS, stage I–IIIB) andextensive-stage (ES, stage IV) non-small-cell lung cancer (NSCLC). End-pointswere treatment-related morbidity and mortality, response rate, duration ofresponse, and survival. Patients and methods: Chemotherapy followed by granulocytecolony-stimulating factor was given at a dose of etoposide (500mg/m2), ifosfamide (4000 mg/m2), cisplatin (50mg/m2), and epirubicin (50 mg/m2) (VIP-E) to107 patients with NSCLC. Twenty-five patients with qualifying responsesproceeded to high-dose chemotherapy with autologous peripheral blood stem celltransplantation after etoposide (1500 mg/m2), ifosfamide(12,000 mg/m2), carboplatin (750 mg/m2) andepirubicin (150 mg/m2) (VIC-E) conditioning. Results of conventional-dose VIP-E: 35 of 102 (34%) evaluablepatients responded (2 CR's, 33 PR's), 33/102 patients (33%) showed nochange (NC); the remainder of patients progressed with therapy (PD). Objectiveresponse rate was 68% (4% CR, 64% PR) in LS-NSCLC and23% (1.4% CR, 21.4% PR) in ES-NSCLC. Median duration ofsurvival was 13 months in LS-NSCLC and 5.5 months in ES-NSCLC. Two-yearsurvival was 26% in LS and 2% in ES-NSCLC. Results of high-dose VIC-E: 23 of 24 evaluable patients improved ormaintained prior responses (92%), 1 patient showed NC. Treatmentmortality was 4%. Median duration of survival was 17 months in LS-NSCLCand 10 months in ES-NSCLC. Two-year survival was 30% in LS and8% in ES-NSCLC. Conclusion: Response-rates and survival after conventional-dose VIP-Echemotherapy are comparable to other published trials of combinationchemotherapy in NSCLC. Toxicity and mortality is acceptable in limited stage,but unacceptably high in extensive stage NSCLC. Although better response-rateswere achieved in the high-dose arm, they did not translate into improvedsurvival. Most stage IV NSCLC-patients will neither benefit from VIP-Econventional dose, nor from VIC-E high dose chemotherapy. Whether selectedLS-patients with partial or complete responses to VIP-E induction chemotherapycould benefit from dose intensification in an adjuvant or neo-adjuvant settingremains to be determined.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    ISSN: 1569-8041
    Schlagwort(e): hematopoietic growth-factors ; high-dose chemotherapy ; non-small-cell lung cancer ; peripheral blood stem-cell transplantation ; standard-dose chemotherapy ; treatment-related mortality
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Background: We conducted a phase I–II trial to assess the activity of standard-dose (SDC) and high-dose chemotherapy (HDC) with etoposide, ifosfamide, cis/carboplatin, and epirubicin (VIP-E, VIC-E) in 107 patients with limited-stage (LS, stage I–IIIB) and extensive stage (ES, stage IV) non-small-cell lung cancer (NSCLC). Patients and methods: Updated results of a previously published trial are presented. Results: Response rates and survival after VIP-E were comparable to those of other standard-dose combination chemotherapies in NSCLC. Treatment-related mortality (TRM) in SDC was 3% in LS-NSCLC, and 8% in ES-NSCLC. TRM was 4% in patients selected for HDC by response rate and performance score. Five-year survival in LS-NSCLC was 12% after SDC, and 18% after HDC; it was 0% for both treatment protocols in ES-NSCLC. Conclusions: The activity of VIP-E SDC and VIC-E HDC is not superior to that of established protocols in the treatment of NSCLC. In view of the toxicity and TRM associated with this protocol, less aggressive regimens should be preferred for most patients. Whether selected patients with chemosensitive disease could benefit from VIP-E SDC and/or VIC-E HDC in an adjuvant or neo-adjuvant setting could not be determined within the scope of this study.
    Materialart: Digitale Medien
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