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  • 1
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Female Wistar rats with autotransplanted and xenotransplanted skingrafts received3H-Thymidin 3 times daily for 9 days after grafting. Qualitative and quantitative analysis of the lymphocytes in the peripheral blood were done daily. The grafted skin was examined histologically and autoradiographically on the 9th day. There was a significant difference in the labelling index of small lymphocytes between xenotransplanted and autotransplanted animals. The labelling of lymphocytes in the animals with xenografts was higher from the 6th day on as compared to the animals with autografts. From these results the conclusion was drawn, that more small lymphocytes are formed in animals with xenografts. The lymphocytes enter and leave the blood stream at an increased rate.
    Notes: Zusammenfassung Autotransplantierte und xenotransplantierte weibliche Wistar-Ratten erhielten vom Tage 0 bis zum Tage+9 dreimal täglich3H-Thymidin. Qualitative und quantitative Analysen der Lymphozyten-Population des peripheren Blutes wurden täglich durchgeführt, die Hauttransplantate histologisch und autoradiographisch am Tage+9 untersucht. Die Ergebnisse zeigen, daß der Markierungsindex der kleinen Lymphozyten in Blut zwischen xenotransplantierten und autotransplantierten Tieren signifikant verschieden ist, wobei die Markierung bei der Gruppe mit Xenotransplantaten ab dem 6. Tage höher liegt als bei den autotransplantierten Kontrolltieren. Die Ergebnisse lassen auf eine erhöhte Bildungs-, Einstrom- und Ausstromrate kleiner Lymphozyten nach Xenotransplantation schließen.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 27 (1973), S. 432-433 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: Bone marrow transplantation ; Aplastic anaemia ; Knochenmarktransplantation ; Aplastische Anämie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Im Rahmen der Arbeitsgemeinschaft Knochenmarktransplantation — München (AG-KMT) wurden vom März 1975 bis Mai 1980 insgesamt 12 Patienten wegen schwerer, aplastischer Anämie mit Knochenmarktransplantation (KMT) behandelt. Sechs Patienten überleben derzeit mit normalem Blutbild und Knochenmark zwischen 10 Monaten und mehr als 5 Jahren nach KMT von HLA-identischen Geschwistern, eine Patientin steht noch in ambulanter Behandlung wegen lokalisierter, chronischer Graft-versus-Host Krankheit (GvHK), fünf Patienten sind klinisch gesund. Sechs Patienten starben, ein Patient starb am Tag vor KMT mit Hirnblutung, drei Patienten 32, 40 und 55 Tage nach KMT an den Folgen der Transplantatabstoßung, einer an schwerer GvHK 85 Tage nach KMT und einer 87 Tage nach KMT vermutlich an interstitieller Pneumonie nach Hirnblutung. Drei von 6 Patienten, die nur mit Cyclophosphamid (CY) vorbehandelt waren, starben infolge Abstoßung des Transplantates. Zwei erwachsene Patienten, die mit CY und „total lymphoid irradiation“ vorbehandelt waren, und drei Kinder, die nach KMT unbestrahlte Leukocytenkonzentrate von Knochenmarkspender erhalten hatten, stießen das Transplantat nicht ab. Die Ergebnisse der AG-KMT sind vergleichbar denen großer, spezialisierter Zentren für KMT und zeigen die Möglichkeiten einer Heilung schwerer aplastischer Anämien durch KMT von HLA-identischen Geschwistern. Die Erfolge sind besser bei frühzeitiger KMT.
    Notes: Summary From March 1975 until May 1980 twelve patients with severe aplastic anemia were grafted with bone marrow from HLA-identical siblings by the Munich Cooperative Group for Bone Marrow Transplantation. Six patients are alive between 10 months and more than 5 years after grafting with normal blood values and marrow. One patient is treated as an out patient for chronic localized graft-versus-host disease (GvHD), five patients are well and without treatment. Six patients have died, one patient with a cerebral hemorrhage the day before transplantation, three patients following rejection of grafts 32, 40 and 55 days after grafting, one patient with severe GvHD 85 days after grafting and one patient, probably with interstitial pneumonia, following cerebral hemorrhage. Three of 6 patients who were conditioned with Cyclophosphamide (CY) only died following rejection of the graft. Two adults who were conditioned with CY and “total lymphoid irradiation” and three children, who were given unirradiated leukocyte concentrates from the marrow donor after grafting, did not reject their grafts. The results of the Munich-Cooperative Group for Bone Marrow Transplantation are comparable to those of large, specialized centers for bone marrow transplantation, they indicate possibilities of cure of severe aplastic anemia by marrow grafts from HLA-identical siblings. They confirm that better results are obtained with earlier transplantation in the course of the disease.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Osteogenic sarcoma ; Methotrexate ; Radioimmunoassay ; Osteosarkom ; Methotrexat ; Radioimmunoassay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 22 Patienten mit osteogenem Sarkom, die 103 hochdosierte Methotrexatinfusionen (6–8,5 g/m2 in 4–6 h) erhielten, wurde mit einem eigenen spezifischen und rasch durchführbaren Radioimmunoassay die Plasmapharmakokinetik des Methotrexats untersucht. Bei nichttoxischen Verläufen lag die Plasmakonzentration nach 24 h unter 8,0 × 10−6 mol/l, nach 48 h unter 8,0 × 10−7 mol/l und nach 72 h unter 4,25 × 10−7 mol/l. Alle Patienten mit 48 h-Werten über 1 × 10−6 mol/l entwickelten schwere toxische Erscheinungen in Form von Knochenmarksdepression und Stomatitis, die durch eine verzögerte Ausscheidung des Methotrexats bedingt war. Der Anstieg des Serumkreatinins war kein zuverlässiges Kriterium für toxische Verläufe. Die Bestimmung der 48- und 72h-Methotrexat-Plasmakonzentrationen erwies sich als zuverlässiger Parameter zur Erfassung von Patienten mit drohender Toxizität. Sie ermöglicht somit, rechtzeitige therapeutische Maßnahmen, z.B. in Form einer zusätzlichen Leukovorintherapie zu ergreifen.
    Notes: Summary In 22 patients with osteogenic sarcoma, treated with 103 high-dose methotrexate infusions (6–8.5 g/m2 in 4–6 h) plasma methotrexate levels were measured with a specific and rapid radioimmunoassay. Nontoxic infusions were associated with methotrexate concentrations below 8.0 × 10−6 mol/l at 24 h, 8.0 × 10−7 mol/l at 48 h and 4.25 × 10−7 mol/l at 72 h. All patients with 48 h methotrexate levels above 1 × 10−6 mol/l manifested severe toxicity with myelosuppression and stomatitis due to delayed methotrexate excretion. Rise of serum creatinine was not reliable to predict oxicity. Determination of 48-and 72-h methotrexate concentrations proved to be a valuable method for identifying patients at high risk for toxic side effects. Additional citrovorum factor may thus be given in time.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 18 (1973), S. 59-68 
    ISSN: 1432-1106
    Keywords: Cerebellar-development ; Autoradiography ; Cell-renewal ; Migration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The development of rat cerebellum was studied by the complete 3H-thymidine labelling method which provides a 100% labelling of cell nuclei at the time of birth. The decrease in labelling index and intensity after birth was studied for a total of 42 days in order to compare proliferative activity of the different cell populations. The results indicate that Purkinje cells and cells of the nucleus lateralis cease to divide after birth. Golgi cells showed a very slow proliferative activity up to day 20. A rapid cell turnover rate was found for basket cells and cells of the molecular layer up to day 8 and a slow proliferation at later times. A high proliferative activity of the external granular layer cells after day 3 to day 8 and a similar decline of labelling over internal granular cells was found. The latter finding was interpreted as being due to cell renewal of internal granular cells as well as cell migration from external granular cells into the internal granular layer. The transit time for the migratory process was calculated to be approximately 24 hours.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1076
    Keywords: Omenn syndrome ; Hypereosinophilia ; Endomyocardial disease ; Bone marrow transplantation ; Pulmonary vascular obstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 5-month-old infant presented with severe combined immunodeficiency disease, reticuloendotheliosis, and hypereosinophilia (Omenn syndrome) resulting in recurrent infections and endomyocardial disease. Bone marrow transplantation from an HLA-identical donor after chemotherapeutic conditioning led to both immunological and clinical recovery. Bone marrow transplantation, however, was followed by severe pulmonary occlusive disease. The patient gradually recovered while on increased inspiratory oxygen and the calcium channel blocker nifedipine.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1076
    Keywords: Acute lymphoblastic leukaemia ; Childhood ; Combination chemotherapy ; Rotation of drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A frequent change of drug combinations may circumvent drug resistance in the treatment of patients with acute lymphoblastic leukaemia (ALL). In study COALL 85/89 201 children with high-risk ALL were randomized to receive over a period of 8 months rotational chemotherapy with six drug combinations given either in slow rotation (SR) (each combination given twice in succession) or in rapid rotation (RR) (cach combination given once with a repetition of the drug combinations). Treatment of central nervous system leukaemia consisted of cranial irradiation and intrathecal methotrexate. Both SR and RR treatment groups were then given continuation chemotherapy of oral 6-mercaptopurine and methotrexate until 2 years after the date of diagnosis. The 9-year eventfree survival (EFS) rate for the whole group is 69%±3%, and the survival rate 75%±3% at a median follow up of 5.8 years. Failure to achieve remission at day 28 was the most important prognostic factor (EFS 12%±7% vs. 75%±3% in the remission group). In the RR group, 11/100 patients were not in remission at day 28 opposed to 7/101 patients in the SR group. Children aged 〈1 year (6/6 relapses) or aged 〉=10 years had a worse prognosis (EFS 64%±5% vs. 77%±4% in patients 1–10 years old). After 5 years EFS was inferior in the RR group attributable to a significantly higher relapse rate in children with a WBC〉=100/nl. The EFS at 9 years for all patients, however, is similar in both groups (SR 72%±5% vs. RR 67±5%).
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1076
    Keywords: Key words Acute lymphoblastic ; leukaemia ; Childhood ; Combination chemotherapy ; Rotation of drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A frequent change of drug combinations may circumvent drug resistance in the treatment of patients with acute lymphoblastic leukaemia (ALL). In study COALL 85/89 201 children with high-risk ALL were randomized to receive over a period of 8 months rotational chemotherapy with six drug combinations given either in slow rotation (SR) (each combination given twice in succession) or in rapid rotation (RR) (each combination given once with a repetition of the drug combinations). Treatment of central nervous system leukaemia consisted of cranial irradiation and intrathecal methotrexate. Both SR and RR treatment groups were then given continuation chemotherapy of oral 6-mercaptopurine and methotrexate until 2 years after the date of diagnosis. The 9-year event-free survival (EFS) rate for the whole group is 69% ± 3%, and the survival rate 75% ± 3% at a median follow up of 5.8 years. Failure to achieve remission at day 28 was the most important prognostic factor (EFS 12% ± 7% vs. 75% ± 3% in the remission group). In the RR group, 11/100 patients were not in remission at day 28 opposed to 7/101 patients in the SR group. Children aged 〈 1 year (6/6 relapses) or aged ^ 10 years had a worse prognosis (EFS 64% ± 5% vs. 77% ± 4% in patients 1–10 years old). After 5 years EFS was inferior in the RR group attributable to a significantly higher relapse rate in children with a WBC ^ 100/nl. The EFS at 9 years for all patients, however, is similar in both groups (SR 72% ± 5% vs. RR 67 ± 5%). Conclusion The COALL 85/89 treatment protocol with early intensive therapy and rotation of different drug combinations offers long-term disease-free survival for children with high-risk ALL. A continuous 4-week exposure to one drug combination may be necessary to achieve optimal results, especially in children with a high leukaemic cell burden.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 137 (1981), S. 285-290 
    ISSN: 1432-1076
    Keywords: Thalassemia ; Hemosiderosis ; Desferrioxamine ; Liver storage iron ; Ferritin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ten children with transfusion dependent anemias (thalassemia, sideroblastic anemia, congenital pure red cell aplasia) received either intravenous desferrioxamine (DF) in increasing doses up to 450 mg/kg at the time of transfusion or daily subcutaneous DF up to 110 mg/kg on an outpatient basis. No patient on intravenous DF reached a negative iron balance. All children with a subcutaneous DF dose of more than 60 mg/kg obtained a negative iron balance with a net iron excretion (transfusion iron already substracted) between 206 to 810 mg (mean 496 mg) monthly. The effectiveness of regular subcutaneous DF on liver storage iron could be confirmed in 4 patients by liver biopsy, showing a decrease between 40–60% iron after 12–14 months of chelation therapy. So far the daily iron excretion has remained constant with a given dose of DF over a period up to 15 months. Even if poor compliance in some patients is taken into account, it is possible with this method of treatment to prevent further accumulation of iron in chronically transfused children.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of medicinal chemistry 13 (1970), S. 922-925 
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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