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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
|
pubmed:dateCreated |
1980-8-25
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pubmed:abstractText |
Administration of cycloheximide in a single dose of 0.6 mg/kg to 7-day-old rats was used to induce short-term inhibition of protein synthesis at the period of brain 'growth spurt'. Measurement of the rate of [14C]lysine incorporation indicated that the initial inhibition of protein synthesis in the brain (by 75%) was released within about 12 h. The normal rate of protein synthesis was attained by 48 h after cycloheximide administration; there was no sign of protein synthesis stimulation. The estimation of [14C]thymidine incorporation into brain DNA showed that inhibition of DNA synthesis was greater and longer lasting in the forebrain and olfactory bulbs (by about 80%) than in the cerebellum (by about 40%). Similar differential inhibition of thymidine kinase activity was observed in the olfactory bulbs (by 75%) and cerebellum (by 30%) at 24 h after cycloheximide, suggesting that the formation of [14C]thymidine nucleotides may have been impaired. However, a retardation of DNA accumulation was found in the forebrain and cerebellum at 72 h after cycloheximide. Thus, the short-term inhibition of protein synthesis produced prolonged inhibition of DNA synthesis and altered cell proliferation in the developing brain.
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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 |
Jun
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pubmed:issn |
0006-8993
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
23
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pubmed:volume |
192
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
531-41
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:7378802-Animals,
pubmed-meshheading:7378802-Animals, Newborn,
pubmed-meshheading:7378802-Brain,
pubmed-meshheading:7378802-Cycloheximide,
pubmed-meshheading:7378802-DNA,
pubmed-meshheading:7378802-Male,
pubmed-meshheading:7378802-Rats,
pubmed-meshheading:7378802-Thymidine,
pubmed-meshheading:7378802-Thymidine Kinase
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pubmed:year |
1980
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pubmed:articleTitle |
Effect of cycloheximide administered to rats in early postnatal life: prolonged inhibition of DNA synthesis in the developing brain.
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pubmed:publicationType |
Journal Article
|