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Possibility of Overcoming ACNU Resistance in ACNU-registan Sublines of Rat Hrain Tumrs In Vitro by a Calmodulin Inhibitor Tatsuo YOSHIDA 1 , Keiji SHIMIZU 1 , Heitaro MOGAMI 1 , Yukiya SAKAMOTO 2 , Takanobu EGAWA 3 1Department of Neurosurgery, Osaka University Medical School 2Inslitute of Cancer Research, Osaka University Medical School 3Department of Internal Medicine, Osaka University Medical School Keyword: Drug resistance , ACNU , Trifiluoperazine , Calmodulin inhibitors. Brain tumor pp.143-149
Published Date 1987/2/10
DOI https://doi.org/10.11477/mf.1436202359
  • Abstract
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A calmodulin inhibitor, trifluoperazine, was found to enhance the cytotoxicity of ACNU in vitro in rat C6 glioma, 9L gliosarcoma and their ACNU-resistant sublines (C6/ACNU and 9L/ACNU). Uptake and retention of ACNU in these cells were studied with 〔14C〕ACNU in the absence or presence of trifluo-perazine. The results indicated that intracellular uptake and retention of ACNU in C6 and 9L cells were larger than those in C6/ACNU and 9L/ACNU cells, and that trifluoperazine increased the cellular uptake and retention of ACNU in C6 and 9L, espe-cially in C6/ACNU and 9L/ACNU cells.


Copyright © 1987, 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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