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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 115 (1989), S. 247-252 
    ISSN: 1432-1335
    Keywords: N-Nitrosomorpholine ; 3,4,3′,4′-Tetrachlorobiphenyl ; Tumor promoter ; Cytotoxicity ; Mouse hepatocarcinogenesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Effects of 3,4,3′,4′-tetrachlorobiphenyl (TCB) on glucose-6-phosphatase (G6Pase)-altered hepatic foci of N-nitrosomorpholine (NNM)-treated B6C3F1 mice were investigated. TCB was chosen as a selective 3-methylcholanthrene-type inducer and tumor promoter. To initiate hepatocarcinogenesis, mice were treated with NNM (160 mg/l, in drinking water for 7 weeks), as in previous studies with the rat model. After a treatment-free interval of 22 weeks, TCB was administered (5×50 mg/kg, every 3 days), and liver foci were analysed 10 weeks after the start of TCB treatment. Unexpectedly, the number of G6Pase-negative and-positive foci per liver was markedly diminished following TCB treatment (to 32% and 57%, respectively). On the other hand, the mean volume of the remaining G6Pase-altered foci was enhanced, owing to an increase in the percentage of foci of large size (〉0.5mm2). Throughout the experimental period of 39 weeks prolonged liver injury due to NNM and TCB treatment was demonstrated by histology and by elevated serum levels of glutamate-oxaloacetate transaminase. The results suggest that (in contrast to the rat system) TCB exhibited opposing effects on liver foci in the mouse model: (a) moderate tumor-promoting effects and (b) cytotoxic effects in NNM-injured liver, leading to decreased numbers of liver foci.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0584
    Keywords: Key words Acute myelogenous leukemia ; Allogeneic marrow transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Between February 1982 and April 1995, 62 patients (37 male, 25 female) with acute myelogenous leukemia (AML) with a median age of 32 years (19–51 years) received allogeneic marrow grafts from an HLA-identical sibling (n=60) or an HLA-mismatched family member (n=2). At the time of transplant, 35 patients were in first complete remission (CR), five in second CR, eight were primary refractory, eight were in untreated relapse and six in refractory relapse. The FAB subtypes were as follows: M1 (n=17), M2 (n=13), M3 (n=6), M4 (n=19), M5 (n=6), M6 (n=1). For conditioning most patients were given total body irradiation combined with cyclophosphamide (CY, n=50) or CY and busulfan (n=9). For graft-versus-host disease prophylaxis patients received cyclosporin A (CSA) and methotrexate (MTX) (n=32), MTX alone (n=12), CSA and methylprednisone (n=5), or CSA alone (n=13). As of April 1995, probability of leukemia-free survival projected at 10 years after BMT was 60% for patients transplanted in first CR compared with 10% for patients transplanted beyond first CR. Transplant-related mortality was 11% after BMT in first CR and 39% after BMT beyond first CR. Probability of relapse projected at 10 years after BMT is 32% for patients who received transplants in first CR and 81% for patients who received transplants beyond first CR. Thus, high-dose chemo/radiotherapy followed by allogeneic marrow infusion has a high curative potential for patients with AML who receive transplants in first CR and offers the chance of long-term disease-free survival for some patients with advanced disease.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0584
    Keywords: Key words Acute myelogenous leukemia ; Stem-cell transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Between February 1982 and 1999, 118 consecutive patients (65 male, 53 female) with acute myelogenous leukemia (AML), with a median age of 35 years (range 17–56 years), received stem-cell grafts from a human leukocyte antigen-identical sibling (n=71), one-antigen-mismatched family member (n=2), matched unrelated donor (n=15), one-antigen-mismatched unrelated donor (n=4) or an autologous (n=26) graft. At the time of transplant, 56 patients were in the first complete remission (CR), 27 in the second CR, 6 in untreated relapse, 17 in primary refractory, and 12 in refractory relapse. The French-American-British classification (FAB) subtypes were as follows: M1 (n=25), M2 (n=28), M3 (n=11), M4 (n=32), M5 (n=16), M6 (n=6). For conditioning, most patients underwent total body irradiation-containing regimens. As of 28 February, 1999, probability of leukemia-free survival (LFS) is 58% for patients after related and 45% after unrelated stem-cell transplantation (SCT). The probability of LFS is 70% for patients given allogeneic transplants in the first CR compared with 33% for those beyond the first CR at SCT. In autologous stem-cell graft recipients, the probability of LFS is 37%. Transplant-related mortality was 28% after related, 20% after unrelated, and 4% after autologous SCT. Probability of relapse for patients given related-donor stem-cell grafts in the first CR and beyond the first CR is 30% and 67%, 55% after unrelated and 63% after autologous stem-cell grafting. Thus, myeloablative therapy followed by allogeneic stem-cell infusion has a high curative potential for patients with AML in remission and offers substantial benefits to patients in advanced disease.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 127 (1996), S. 97-102 
    ISSN: 1434-4475
    Keywords: 3-Vinylindoles ; Carbazoles ; Diels-Alder reactions ; Cytotoxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die aus den methoxysubstituierten 3-Vinylindolen1 und2 zugänglichen Cycloaddukte3,5 und7 lassen sich mitDDQ zu den coplanar-anellierten Carbazolen4,6 und8 dehydrieren. Verbindung4a, die auch durch eine Röntǵenstrukturanalyse charakterisiert wurde, zeigt signifikante Cytotoxizität gegen Humantumor-Zellinien (K562 und RXF93).
    Notes: Summary The cycloadducts3,5, and7, readily available from methoxy-substituted 3-vinylindoles1 and2, were dehydrogenated withDDQ to the coplanar [a]-anellated carbazoles4,6, and8. Compound4a, also characterized by X-ray structural analysis, shows significant cytotoxicity against K562 und RXF393 human tumor cell lines.
    Type of Medium: Electronic Resource
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