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In vitro Study on Intrathecal Application of 5-fluoro-2'-deoxyuridine (FdUrd) for Meningeal Dissemination of Malignant Tumor Hidemitsu NAKAGAWA 1 , Masanobu YAMADA 1 , Masakazu FUKUSHIMA 2 , Keiji SHIMIZU 3 , Kazuhiro IKENAKA 4 1Department of Neurosurgery, Osaka Medical Center for Cancer and Cardiovascular Diseases 2Cancer Research Laboratory, Taiho Pharmacological Company 3Department of Neurosurgery, Osaka University Medical School 4Laboratory of Neural Information, National Institute for Physiological Sciences, Okazaki National Research Institutes Keyword: brain tumor , fluorodeoxyuridine , thymidine phosphorylase , intrathecal chemotherapy pp.787-794
Published Date 1998/9/10
DOI https://doi.org/10.11477/mf.1436901611
  • Abstract
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To evaluate the possible clinical intrathecal use of 5-fluoro-2'-deoxyuridine (FdUrd) for malignant braintumors, its anti-tumor activity and neurotoxicity were compared with that of 5-fluorouracil (5-FU) and5-fluorouridine (FUrd) in vitro. FdUrd showed good tumoricidal activity against cultured mouse 203glioma cells and rat Walker 256 carcinoma cells as well as A172 human glioblastoma cells, Daoy humanmedulloblastoma cells and CADO-LC4 human lung cancer cells. It also showed less toxicity for primarycultures of neurons from C57/BL6 mouse and human embryo compared to 5-FU and FUrd. Thymidine phosphorylase (TPase) and thymidine kinase (TK) , key enzymes for metabolism of 5-FU derivatives, were measured in cerebrospinal fluid (CSF). TPase or TK activity was detected in the CSF of hardly any patients with malignant brain tumors including meningeal carcinomatosis. These data indicated that the CSF is a favorable site for FdUrd chemotherapy, because the rate of conversion of FdUrd injected to 5-FU would be minimal. In conclusion, FdUrd may be potentially useful for intrathecal treatment of meningeal carcinomatosis.


Copyright © 1998, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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