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  • Deoxycoformycin  (2)
  • Sensitivität  (2)
  • Autologous bone marrow transplantation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 66 (1988), S. 467-474 
    ISSN: 1432-1440
    Keywords: Purine enzymes ; Lymphoma ; Leukemia, Diagnosis ; Treatment ; Deoxycoformycin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A few enzymes of the purine degradative pathway have proved valuable in diagnosis and treatment of lymphomas and lymphocytic leukemia. Of particular interest are the enzymes adenosine deaminase (ADA), purine nucleoside phosphorylase (PNP) and ecto-5′-nucleotidase (5NT). Intact activities of ADA and PNP have been shown to be vital for lymphoid cells. During development, lymphoid precursors go through remarkable changes in the concentrations of these enzymes and the neoplasma derived from them show a “frozen” biochemical profile similar to the corresponding normal cell of origin. Knowledge of the role of these enzymes has led to the pharmacological use of enzyme inhibitors for the specific treatment of lymphoid neoplasms. This review concerns the enzymatic make-up of normal and neoplastic lymphocytes and exploitation of this knowledge for the treatment of lymphomas. Special emphasis will be put on the clinical use of an ADA-inhibitor, deoxycoformycin.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Deoxycoformycin ; Hairy cell leukemia ; Refractory treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Three patients with advanced hairy cell leukemia received low-dose deoxycoformycin treatment after failure to respond to therapy with interferon alpha. Patients 1 and 2 had progressive disease after splenectomy and subsequent treatment with recombinant interferon alpha (for 7 and 3 months, respectively). DCF was administered at 4 mg/m2 weekly for 3 weeks, and then once every week for 6 weeks. Patient 1 was in complete remission after 9 weeks of treatment and patient 2 in partial remission with normalization of peripheral blood counts. The third patient, also splenectomized, developed hepatotoxicity after therapy trial with interferon for 24 days and no objective improvement was observed at this stage. She subsequently responded to DCF treatment with improvements in blood counts and bone marrow. This report demonstrates that DCF is highly effective in hairy cell leukemia and non-cross-resistant with interferon alpha.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0584
    Keywords: Autologous bone marrow transplantation ; Acute leukemia ; 4-hydroperoxycyclophosphamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An autologous bone marrow transplantation (ABMT) was performed in a 45-year-old male patient with AML in therapy-resistant first relapse including CNS-disease. The marrow graft was harvested 18 months before, at the beginning of first remission, and was subjected to an in-vitro incubation with 4-hydroperoxycyclophosphamide (4-HC) prior to cryopreservation to eliminate residual clonogenic tumor cells. After myeloablative therapy with high-dose Cyclophosphamide (CY), total body irradiation (TBI) and intrathecal application of Methotrexate (MTX), the manipulated marrow graft was reinfused. The myelopoietic reconstitution started already 6 days after ABMT and was completed 40 days thereafter. There is evidence for a complete remission in marrow and spinal fluid observed over a period of 4 months.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 42 (1981), S. 183-190 
    ISSN: 1432-0584
    Keywords: Glucocorticoid-Rezeptoren ; Sensitivität ; Leukämie ; Glucocorticoid receptors ; Sensitivity ; Leukemias
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In an attempt to investigate the utility of glucocorticoid receptor determination to predict clinical responsiveness in human leukemias we have studied glucocorticoid receptors in the leukemic cells from 46 patients and in the lymphocytes from 18 normal donors. In the normal lymphocytes there were 3,875 (Median) specific binding sites per cell. The blasts from 17 patients with ANLL had on average higher levels of binding sites per cell (Median = 7,250, range: 0 to 15,295) than the other leukemias. Of the 15 patients with CLL, six had received glucocorticoid treatment for 3 to 5 years. Their lymphocytes had lower number of receptors (Median = 2,000) than the other cases which were newly diagnosed (Median = 4,500). Four patients had ALL/AUL, three patients had blast crisis as terminal phase of CML, and seven had leukemic Non-Hodgkin lymphomas (Median = 3,500 sites/cell). In 24 patients we have also studied the in vitro sensitivity of the leukemic cells to dexamethasone. There was no marked correlation between glucocorticoid receptor levels and in vitro sensitivity. An attempt to correlate receptor levels with clinical responsiveness demonstrated that glucocorticoid receptor determination might be of value in patients with lymphoid malignancies but probably not in patients with other leukemias.
    Notes: Zusammenfassung Zur Prüfung der Frage, ob eine positive Korrelation zwischen dem Steroid-Rezeptorgehalt von Leukämiezellen und dem Erfolg einer Steroid-Therapie besteht, haben wir Glucocorticoid-Rezeptoren bei Leukämien und Lymphomen untersucht. Die Bestimmung erfolgte nach Baxter und Tomkins. Untersucht wurden 46 Patienten mit Leukämien und 18 Kontrollpersonen. Normale Lymphozyten haben durchschnittlich 3875 spezifische Bindungsstellen pro Zelle. Die Anzahl der Glucocorticoid-Rezeptoren in den Blasten von 17 Patienten mit akuter myeloischer Leukämie zeigten starke Schwankungen (Bereich 0 bis 15295 Rezeptoren pro Zelle). Sechs von 15 Patienten mit chronischer lymphatischer Leukämie wurden seit Jahren mit Glucocorticoiden behandelt und sprachen zur Zeit der Steroid-Rezeptor-Bestimmung auf diese Therapie nicht mehr an. Die Anzahl der Steroid-Bindungsstellen der Lymphozyten dieser Patienten erwies sich im Mittel als niedriger (2000 je Zelle) als bei den unbehandelten Patienten (4500 je Zelle). Bei 24 Patienten haben wir auch die In-Vitro-Sensitivität der Leukämiezellen gegenüber Dexamethason untersucht. Es konnte keine eindeutige Korrelation zwischen Rezeptorengehalt und In-Vitro-Sensitivität festgestellt werden. Weitere Analysen mit klinischen Daten weisen darauf hin, da\ die Bestimmung von Glucocorticoid-Rezeptoren für die Planung und Durchführung einer Therapie bei den lymphatischen Leukämien Bedeutung erlangen kann, jedoch wahrscheinlich nicht bei den myeloischen Leukämien.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 58 (1980), S. 43-45 
    ISSN: 1432-1440
    Keywords: Glucocorticoid-Rezeptoren ; Leukämien ; Sensitivität ; Glucocorticoid receptors ; Leukemias ; Sensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Determination of steroid receptors has been used to predict steroid sensitivity in various neoplasias. In an attempt to investigate its applicability in human leukemias we have studied glucocorticoid receptors in the leukemic cells from 23 patients with various hematologic neoplasias and in the lymphocytes from 18 normal donors. Specific glucocorticoid binding in intact cells was determined by a whole cell competitive binding assay. Normal lymphocytes have about 4,611 specific binding sites per cell. The blasts from 9 patients with acute myelogenous leukemias (AML) have strongly varying high levels of specific binding sites, ranging from 4,817 to 15,416 per cell. Of the 13 patients with chronic lymphocytic leukemia (CLL), 5 have received glucocorticoid treatment for years and were clinically resistant to glucocorticoid. Their lymphocytes have lower specific binding sites (range: 2,047 to 3,999) than the other CLL cases which were newly diagnosed (range: 3,734 to 11,020). Our results suggest that determination of glucocorticoid receptors might be of value in predicting clinical responsiveness in leukemias.
    Notes: Zusammenfassung Bei einigen steroid-sensitiven Neoplasien ist die Bestimmung von Steroid-Rezeptoren für die Voraussage einer Ansprechbarkeit auf die Hormontherapie von Bedeutung. Um die Anwendung dieser Methode auch bei Leukämien nachzuprüfen, haben wir die Glucocorticoid-Rezeptoren in Leukämiezellen von 23 Patienten und in Lymphozyten von 18 Kontrollpersonen untersucht. Die Bestimmung erfolgte nach einer Methode nach Baxter und Tomkins. Normallymphozyten haben circa 4611 spezifische Bindungsstellen pro Zelle. Der Anzahl der Steroid-Rezeptoren in den Blasten von 9 Patienten mit AML schwankten stark (Bereich: 4817–15416 Stellen/Zelle). Fünf von 13 Patienten mit CLL wurden seit Jahren mit Glucocorticoid behandelt und sprachen zur Zeit der Rezeptoren-Bestimmung auf die Therapie nicht mehr an. Die Anzahl der Bindungsstellen der Lymphozyten dieser Patienten war im Mittel niedriger (Bereich: 2047–3999), als bei den Patienten, die neu diagnostiziert worden waren (Bereich: 3734–11020). Unsere Ergebnisse weisen darauf hin, daß die Bestimmung von Steroid-Rezeptoren für die Planung einer Therapie mit Glucocorticoiden von Bedeutung sein könnte.
    Type of Medium: Electronic Resource
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