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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7
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pubmed:dateCreated |
1980-9-28
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pubmed:abstractText |
Well-defined times for minimum and maximum growth rates of rat hepatoma 3924A were found when cyclophosphamide doses were increased from 50 to 250 mg/kg. Minimum growth rates occurred 8 to 10 days after treatment and maximum growth rates occurred 13 to 16 days after treatment in 5 groups of 10 animals each that received 50, 100, 150, 200, and 250 mg of cyclophosphamide per kg. Tumor growth delay increased from 6 to 18 days when the dose was increased from 50 to 250 mg/kg. The accelerated growth rate of treated tumors on Day 14 after cyclophosphamide (150 mg/kg) was more than twice that of controls on the same day, 0.349 +/- 0.030 (S.E.) (day-1) and 0.156 +/- 0.011 (day-1), respectively. In addition, the accelerated growth rate of treated tumors on Day 14 was greater than that of controls at initiation of treatment, 0.298 +/- 0.026 (day-1) on Day 2. Increased DNA synthetic rate precedes increased tumor cell proliferation, which, in turn, increases tumor volume. Thus, biochemical studies demonstrating increased cellular proliferation confirm accelerated tumor growth following treatment.
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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:month |
Jul
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pubmed:issn |
0008-5472
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
40
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2179-83
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:7388785-Animals,
pubmed-meshheading:7388785-Cell Division,
pubmed-meshheading:7388785-Cell Line,
pubmed-meshheading:7388785-Cyclophosphamide,
pubmed-meshheading:7388785-Dose-Response Relationship, Drug,
pubmed-meshheading:7388785-Liver Neoplasms, Experimental,
pubmed-meshheading:7388785-Neoplasm Transplantation,
pubmed-meshheading:7388785-Rats,
pubmed-meshheading:7388785-Rats, Inbred ACI,
pubmed-meshheading:7388785-Time Factors
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pubmed:year |
1980
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pubmed:articleTitle |
Changes in growth rate of an experimental solid tumor following increasing doses of cyclophosphamide.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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