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  • 1
    ISSN: 1432-1440
    Keywords: Testicular neoplasms ; Stage II ; Combination chemotherapy ; Radiotherapy ; Lymph node dissection ; Testikuläre Tumoren ; Stadium II ; Kombinierte Chemotherapie ; Radiotherapie ; Lymphknoten-Exstirpation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Seit 1975 wurden 140 Patienten mit retroperitoneal-metastasierten nicht-seminomatösen Hodentumoren nach Orchiektomie und retroperitonealer Lymphadenektomie sequentiell alternierend mit den Zytostatika-Kombinationen Velbe/Bleomycin und Adriamycin/Cisplatin plus/minus Radiotherapie behandelt. Davon erhielten 68 Patienten nach totaler retroperitonealer Lymphadenektomie mit postoperativ normalisierten Tumormarkern (Stadium IIA) 6 Chemotherapie-Kurse, woran sich bei 35 Patienten eine Strahlentherapie anschloß. Vierzig Patienten wurden nach subtotaler retroperitonealer Lymphadenektomie oder bei postoperativ erhöhten Tumormarkern (Stadium IIB) und 32 Patienten nach palliativer Lymphadenektomie (Stadium IIC) mit mindestens 12 Chemotherapie-Kursen und fakultativer intermittierender Radiotherapie und/oder Relaparotomie behandelt. Der Vergleich der Behandlungsergebnisse bei den Stadien IIA und IIB ergab unabhängig von der zusätzlichen Radiotherapie nach der „Life-table“-Methode Vier-Jahres-Überlebensraten zwischen 80 und 100%. Diese günstigen Resultate sind mit den Ergebnissen bei 34 nicht adjuvant behandelten Patienten ohne histologisch nachweisbare retroperitoneale Metastasierung (Stadium I) vergleichbar. Ausdruck einer statistisch signifikant schlechteren Prognose bei fortgeschrittener retroperitonealer Metastasierung ist eine Vier-Jahres-Überlebensrate von 12% bei den Patienten im Stadium IIC.
    Notes: Summary Following orchiectomy and retroperitoneal lymph node dissection (RND) 140 patients with stage II non-seminomatous testicular cancer were treated by sequential combination chemotherapy consisting of vinblastine/bleomycin and adriamycin/cis-dichlorodiammineplatinum(II) (DDP), plus/minus radiotherapy. 68 stage IIA-patients (complete RND and normal tumor-markers thereafter) received 6 courses of chemotherapy, followed by radiotherapy in 35 patients. 40 stage IIB-patients (minor residual disease after RND or elevated tumor-markers after RND) and 32 stage IIC-patients (advanced residual disease after RND) were treated by at least 12 chemotherapy courses and optional intermittent radiotherapy and/or relaparotomy. In stage IIA and IIB disease the actuarial 4-year survival rates were between 80 and 100%. These favourable results were not significantly influenced by additional radiotherapy and corresponded to the survival rates for 34 stage I-patients. For stage IIC-patients the prognosis was significantly worse with a 12% 4-year survival rate.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Testicular neoplasms ; Stage IV ; Combination chemotherapy ; Prognosis ; Cross-resistance ; Testikuläre Tumoren ; Stadium IV ; kombinierte Chemotherapie ; Prognose ; Kreuzresistenz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Vierundsiebzig Patienten mit pulmonal metastasierten nicht-seminomatösen Hodentumoren wurden im Rahmen einer prospektiven randomisierten Phase III-Studie sequentiell alternierend mit Velbe/Bleomycin und Adriamycin/Cisplatin behandelt. Unabhängig von der Randomisierung der initialen Zytostatika-Kombination wurden bei 71 auswertbaren Patienten bei einer Ansprechrate von 89% in 54% der Fälle Vollremissionen erzielt, die bei 35% der Patienten zwischen 2+ und 28+ Monaten mit einem Median von 12 Monaten andauerten. Durch zusätzliche operative Entfernung residueller pulmonaler Solitärmetastasen wurde die Vollremissionsrate auf 40/71 (56%) und die Anzahl der andauernden Vollremissionen auf 27/71 (38%) erhöht. Die Zwei-Jahres-Überlebensrate betrug nach der „Life-table“-Methode 63% bei den Patienten, bei denen eine Vollremission erreicht wurde, und war mit 29% bei den übrigen Patienten statistisch signifikant niedriger. Dreiundfünfzig Patienten (75%) waren bei einer mittleren Überlebenszeit von 9 Monaten zwischen 3 und 28 Monaten am Leben. Zusätzliche fortgeschrittene abdominelle Metastasierung, initial erhöhte β-HCG-und LDH-Werte und das Ausmaß der pulmonalen Metastasierung beeinflußten die Prognose statistisch signifikant negativ. Die Auswertung der einzelnen Chemotherapie-Kurse zeigte, daß beide Zytostatika-Kombinationen gleich wirksam waren. Dabei war jedoch ein Ansprechen auf Adriamycin/Cisplatin in 46% der Fälle nachweisbar, in denen Velbe/Bleomycin versagt hatte, während Velbe/Bleomycin nur bei 21% der Fälle wirksam war, in denen Adriamycin/Cisplatin zu keinem Ansprechen geführt hatte. Eine unterschiedlich ausgeprägte Kreuzresistenz zwischen den beiden Zytostatika-Kombinationen muß daher angenommen werden.
    Notes: Summary 74 patients with disseminated non-seminomatous testicular cancer were randomly entered on a prospective sequential combination chemotherapy regimen with mandatory crossover, consisting of either vinblastine/bleomycin or adriamycin/cis-dichlorodiammineplatinum (II) (DDP) as initial therapy. Independent of the randomization the overall remission rate in 71 evaluable patients was 89% including 54% complete remissions. 35% of the patients remained disease-free at 2+ to 28+ months with a median of 12 months. By additional surgical removal of residual pulmonary metastases in two patients the complete remission rate was increased to 40/71 (56%), and the number of patients with no evidence of disease to 27/71 (38%). According to the life-table method the two-years survival rates were 63% for complete responders and 29% for all other patients, which was significantly lower. 53 patients (75%) were alive at 3 to 28 months with a median of 9 months. Additional advanced abdominal disease, initially elevated β-HCG and LDH and extension of pulmonary disease were of significant negative influence on the prognosis. The evaluation of single chemotherapy courses revealed equal efficacy of both combinations. However, response to adriamycin/DDP occurred in 46% of the courses, when vinblastine/bleomycin had failed, while response to vinblastine/bleomycin occurred only in 21% of the courses when adriamycin/DDP had failed. Thus different patterns of cross-resistance between these alternative regimens may exist.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archives of toxicology 60 (1987), S. 150-153 
    ISSN: 1432-0738
    Keywords: Bleomycin ; Redox cycling ; Hydroxyl radical ; DNA damage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Aerobic incubations of bleomycin, FeCl3, DNA, NADPH, and isolated liver microsomal NADPH-cytochrome P-450 reductase resulted in NADPH and oxygen consumption and malondialdehyde formation, indicating that the deoxyribose moiety of DNA was split. All parameters measured depended on the active enzyme, bleomycin and FeCl3. In the absence of oxygen malondialdehyde formation was very low. When bleomycin, FeCl3 and the reductase were incubated with methional ethene (ethylene) was formed, suggesting that during the enzyme-catalyzed redox cycle of bleomycin-Fe(III/II) hydroxyl radicals were formed. Ethene formation also depended on oxygen, NADPH, the enzyme, bleomycin, and FeCl3. During aerobic incubations of bleomycin, FeCl3, NADPH, and isolated liver nuclei oxygen and NADPH were consumed and malondialdehyde was formed. Oxygen and NADPH consumption and malondialdehyde formation depended on bleomycin and FeCl3. In the absence of oxygen malondialdehyde was not formed. These results indicate that nuclear NADPH-cytochrome P-450 reductase redox cycles the bleomycin-Fe(III/II) complex and that the reduced complex activates oxygen, whereby hydroxyl radicals are formed which damage the deoxyribose of nuclear DNA.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 94 (1979), S. 325-331 
    ISSN: 1432-1335
    Keywords: Interstitial cell tumor of testis ; Metastases ; Case report ; Alkaline phosphatase ; Hormonal dysfunction ; Chemotherapy ; Metastasierender Leydig-Zell-Tumor des Hodens ; Fallbericht ; Alkalische Phosphatase ; Hormonelle Dysfunktion ; Chemotherapie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Der metastasierende Leydig-Zell-Tumor des Hodens gehört zu den seltensten menschlichen Neoplasien. Bisher sind 18 Fälle beschrieben worden. Die Mehrzahl dieser Tumoren zeigt hormonelle Aktivitäten. Der von uns beobachtete maligne Leydig-Zell-Tumor weist neben einem ungewöhnlichen Hormonprofil zusätzlich ein Markerenzym — die alkalische Phosphatase — auf. Bei fehlender Radiosensibilität wurde auch mit neueren cytostatischen Substanzen kein Therapieerfolg erreicht. Weniger als 10% aller Leydig-Zell-Tumoren erfüllen die Kriterien der Malignität. Achtzehn Fallbeschreibungen der malignen Form liegen unseres Wissens bisher vor. Wir berichten über einen weiteren Patienten mit histologisch gesichertem Laydig-Zell-Tumor, den klinischen Verlauf, die therapeutischen Erfahrungen mit neueren cytostatischen Substanzen sowie die Besonderheit eines Enzym-Markers.
    Notes: Summary Metastatic interstitial cell tumor of the testis is one of the rarest human neoplasms. This is the nineteenth case to be reported. While most of these tumors are combined with hormonal dysfunction, the present tumor, apart from its uncommon hormonal profile, is remarkable because of its capacity of producing and secreting a marker enzyme, alkaline phosphatase. No response was seen after cytostatic therapy with new antineoplastic agents, such as a combination of adriamycin and cis-diamminedichlorideplatinum (II), and ifosfamide. Considering the lack of radiosensitivity, surgery is the primary modality of treatment.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0584
    Keywords: Hematopoietic stem cell ; Cytotoxic chemotherapy ; CFU-C ; Diffusion chamber ; Hämatopoetische Stammzelle ; zytostatische Chemotherapie ; CFU-C ; Diffusionskammer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Knochenmarksproben von Patienten mit Teratokarzinom unter zytostatischer Langzeitchemotherapie wurden mit der Agarkultur (CFU-C) und in der Diffusionskammer (DK) untersucht. Während einer zwölfmonatigen Beobachtungsperiode zeigte sich keine signifikante Abnahme der CFU-C-Zahl oder der DK-Proliferationskapazität. Im Unterschied hierzu wurde bei Patienten mit akuter Leukämie in Vollremission ein signifikanter Abfall der CFU-C im Knochenmark im Verhältnis zur Dauer der Remission und der zytostatischen Behandlung gefunden.
    Notes: Summary CFU-C and diffusion chamber studies were performed in patients with teratocarcinoma, who underwent long term chemotherapy. No significant decline of bone marrow CFU-C or diffusion chamber cell recovery was found during twelve months of cytotoxic treatment. In contrast to the results in these patients the CFU-C-content of the remission marrow in leukemic patients showed a significant decrease in relation to the duration of remission and chemotherapy.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0584
    Keywords: Key words Acute myeloid leukemia ; Cytosine arabinoside ; Idarubicin ; Induction therapy ; Karyotype
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  We treated 153 patients with de novo acute myeloid leukemia (AML) with two induction courses of conventional-dose cytosine arabinoside (ara-C) and idarubicin (AIDA) followed by either a third course of AIDA, high-dose ara-C or bone-marrow transplantation. The complete remission (CR) rate for all patients was 63.4%, with a higher CR rate for patients with a normal (versus unfavorable) karyotype (73.2% vs 52.5%;P=0.038). The probability of overall survival (OS) was 30.7% after 5 years (26.3% after 7 years). Improved OS at 5 years could be observed for patients up to 50 years old versus patients older than 50 years of age (37.6% vs 19.9%;P=0.001) and patients with a normal (versus unfavorable) karyotype (42.9% vs 14.1%;P=0.0016). Disease-free survival (DFS) after 5 years was 33.2% for all 97 CR patients and was significantly better for patients with a normal (versus unfavorable) karyotype (44.3% vs 12.3%;P=0.003). Multivariate analysis revealed that the age for OS (P〈0.02) and the karyotype for both OS (P〈0.03) and DFS (P〈0.05) were independent prognostic factors. In conclusion, AIDA is an effective and well-tolerated induction regimen (even in elderly patients) with a 5-year survival of more than 30% when combined with ara-C-containing postremission therapy. The karyotype is the most powerful prognostic factor for predicting the outcome of patients treated with this protocol.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 103 (1982), S. 39-48 
    ISSN: 1432-1335
    Keywords: Adriamycin ; Cardiotoxicity ; Covalent protein binding ; Metabolic activation ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Covalent binding of 3H-labeled adriamycin metabolites to bovine serum albumin and microsomal protein is demonstrated in an aerobic incubation system with rat liver and rat heart microsomes, respectively, using exhaustive organic solvent extraction and gel chromatography. Covalent protein binding was dependent on active microsomes, NADPH, and oxygen and was inhibited by reduced glutathione and other sulfhydryl compounds. The anthracycline moiety was spectrophotometrically evidenced in the adriamycin metabolite(s) covalently bound to protein. Thus, enzymatic activation of adriamycin in the heart with consecutive covalent protein binding of reactive adriamycin semiquinone radicals may contribute to adriamycin cardiotoxicity.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 103 (1982), S. 135-143 
    ISSN: 1432-1335
    Keywords: Bleomycin ; Lipid peroxidation ; Lung toxicity ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Bleomycin was injected i.p. in rats, and the amount of expired ethane which indicateds lipid peroxidation was followed up for 78 h. Compared to controls neither 1x30 mg/kg and 2x30 mg/kg nor 1x70 mg/kg bleomycin led to increased ethane expiration, although body weight loss indicated toxicity. That pulmonary toxicity had been developed due to the acute bleomycin treatment could be demonstrated by histological examinations of lungs of the animals of the highest dosage group. The combined treatment of rats with bleomycin and ferrous ions neither resulted in an increase of ethane expired compared to that of the ferrous iontreated animals. Rather a decrease was observed. Our results indicate that acute bleomycin toxicity is not associated with increased lipid peroxidation. Furthermore, our data suggest that the bleomycin-ferrous-complex does not initiate lipid peroxidation in vivo.
    Type of Medium: Electronic Resource
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