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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
109
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pubmed:dateCreated |
1994-11-7
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pubmed:abstractText |
A 13-week subchronic oral toxicity study of cyanoguanidine was performed in male and female F344 rats by feeding of CRF1 powder diets containing 0, 1.25, 2.5, 5 and 10% cyanoguanidine to determine appropriate dose levels for a subsequent 2-year carcinogenicity study. The rats were randomly allocated to 5 groups, each consisting of 10 males and 10 females. No animals died during the administration period. Inhibition of body weight gain was more marked in both sexes of the 10% group and in females of the 5% group as compared with the control group. Mean food intake in males of the groups treated with 5% or 10% and in females of the 10% group was significantly higher than that in the control group. Serum biochemical investigation revealed a higher level of serum BUN in both sexes of the 10% group. On histopathological examination, toxic changes characterized by the occurrence of intranuclear eosinophilic inclusion bodies in the proximal tubular epithelium of the kidney were observed in both sexes of the 10% group. Similar inclusion bodies were also seen in 2 out of 10 males of the 5% group. From these results, it was concluded that a level of 10% of cyanoguanidine in the diet is unequivocally toxic. A dose level, 5% cyanoguanidine, in the diet might be appropriate as a high dose for a carcinogenicity study.
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pubmed:language |
jpn
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0077-4715
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
61-6
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1364406-Administration, Oral,
pubmed-meshheading:1364406-Animals,
pubmed-meshheading:1364406-Female,
pubmed-meshheading:1364406-Guanidines,
pubmed-meshheading:1364406-Hematologic Tests,
pubmed-meshheading:1364406-Male,
pubmed-meshheading:1364406-Organ Size,
pubmed-meshheading:1364406-Random Allocation,
pubmed-meshheading:1364406-Rats,
pubmed-meshheading:1364406-Rats, Inbred F344,
pubmed-meshheading:1364406-Time Factors
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pubmed:year |
1991
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pubmed:articleTitle |
[Subchronic oral toxicity study of cyanoguanidine in F344 rats].
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pubmed:publicationType |
Journal Article,
English Abstract
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