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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1992-12-16
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pubmed:abstractText |
The cytotoxic effect of 5-FU (5-fluorouracil) was demonstrated to be enhanced by hyperthermia after treatment with 5-FU at even a comparatively low dose over fairly long periods. The cytotoxic effect of the combined treatment with 42 degrees C-hyperthermia and 1 microgram/ml 5-FU for 48 hrs, the cytotoxic effect of 42 degrees C-hyperthermia and 5 micrograms/ml 5-FU for 24 hrs, and the cytotoxic effect of 43 degrees C-hyperthermia and 1 and 5 micrograms/ml 5-FU for 8 hrs were studied. The maximally enhanced rate of 42 degrees C-hyperthermia after 5-FU treatment for 96 hrs was 48% after a 1 microgram/ml 5-FU treatment and 150% after 45 hrs with the 5 micrograms/ml 5-FU treatment. The maximally enhanced rate of 43 degrees C-hyperthermia after 5-FU treatment was 170% after 45 hrs with 1 microgram/ml 5-FU treatment and 180% after 24 hrs with 5 mg/ml 5-FU treatment. When V-79 cells were treated at the same temperature, the maximally enhanced rate with 1 microgram/ml 5-FU was almost equal to that of 5 micrograms/ml. Moreover, when each maximally enhanced rate was equalized, each concentration of FU (RNA)/RNA practically became equal, i.e., when the maximally enhanced rates were approximately 150 and 170-180%, FU (RNA)/RNA concentrations were about 40 and 15 ng/mg RNA, respectively. We thus concluded that FU (RNA)/RNA concentration might play an important role as an indicator of the effect of the combined treatment of 5-FU and hyperthermia.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0250-7005
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
12
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1621-5
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pubmed:dateRevised |
2005-11-17
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pubmed:meshHeading |
pubmed-meshheading:1280030-Animals,
pubmed-meshheading:1280030-Cell Line, Transformed,
pubmed-meshheading:1280030-Cell Survival,
pubmed-meshheading:1280030-Cricetinae,
pubmed-meshheading:1280030-Cricetulus,
pubmed-meshheading:1280030-Flow Cytometry,
pubmed-meshheading:1280030-Fluorouracil,
pubmed-meshheading:1280030-Hyperthermia, Induced,
pubmed-meshheading:1280030-Kinetics,
pubmed-meshheading:1280030-RNA,
pubmed-meshheading:1280030-Time Factors
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pubmed:articleTitle |
Enhancement of cytotoxicity by hyperthermia after a long-term culture with 5-fluorouracil in transformed cells.
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pubmed:affiliation |
Division of Clinical Research, National Kyushu Cancer Center, Fukuoka, Japan.
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pubmed:publicationType |
Journal Article
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