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  • 1980-1984  (2)
  • 1981  (2)
Material
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  • 1980-1984  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cancer chemotherapy and pharmacology 5 (1981), S. 133-138 
    ISSN: 1432-0843
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Patients with carcinoid syndrome usually die from carcinomatosis, rather than the pharmacological effects of the tumour. Functioning carcinoid tumours are resistant to radiotherapy. Twenty-four different cytotoxic drugs or combinations have been used to treat the carcinoid syndrome, but only actinomycin D, cyclophosphamide, 5-fluorouracil, melphalan, methotrexate, and streptozotocin have been tried as single agents in more than five patients. 5-Fluorouracil and streptozotocin were the most effective single agents, but their use in combination did not increase response rates. No drug combination was superior to single-agent therapy. Adriamycin has not been tested as a single agent, but results with it used in combination suggest it should be further evaluated. Liposome-encapsulated drugs may be tested, because of selective hepatic uptake.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cancer chemotherapy and pharmacology 5 (1981), S. 185-192 
    ISSN: 1432-0843
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of 1 μM deoxycytidine (dC) on Ara-C conversion to Ara-CTP and on inhibition of DNA synthesis by Ara-C was measured in intact leukaemic myeloblasts. dC decreased Ara-CTP production in blasts with high Ara-C phosphorylation, but not those with low activity. The Ki for dC was similar to values found with partially purified deoxycytidine kinase. The change in Ara-CTP concentration was associated with a proportional reduction in inhibition of DNA synthesis. dC decreased the effects of Ara-C by inhibition of Ara-CTP production, rather than by production of dCTP and competition with Ara-CTP. Since low Ara-CTP production in patients' blasts is a predictor of poor therapeutic response to Ara-C, the use of dC with Ara-C may improve the therapeutic index in this group of patients.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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