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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1986-7-21
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pubmed:abstractText |
We examined whether cyclic AMP (cAMP) affects the incorporation of [3H]thymidine into cartilage cells and, if so, whether this action could be related to the inhibitory effect of glucocorticoid hormones on the growth of ossifying cartilage. Incorporation of [3H]thymidine into trichloroacetic acid-precipitable material by mouse cartilage was measured concomitantly with the concentration of cAMP. Dexamethasone (1 mumol/l) significantly (P less than 0.05) depressed the incorporation of [3H]thymidine. The cAMP analogue 8-bromo-cAMP (0.01-1 mmol/l) also depressed the incorporation of the radionucleotide in a dose-dependent fashion. When various concentrations of 8-bromo-cAMP were added with dexamethasone (1 mumol/l), no apparent changes took place compared with the effect of dexamethasone alone. The phosphodiesterase inhibitor 3-isobutyl-1-methylxanthine (0.2-1 mmol/l) elicited an inhibitory effect on [3H]thymidine incorporation and a stimulatory influence on cartilage cAMP concentrations. Dexamethasone, at doses (0.01-1 mumol/l) causing significant inhibition of [3H]thymidine incorporation, failed to increase cartilage levels of cAMP. It seems, therefore, that the depressive effect of dexamethasone on [3H]thymidine incorporation in condylar cartilage is not mediated through an increase of cAMP in the tissue.
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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 |
May
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pubmed:issn |
0022-0795
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
109
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
209-13
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:3011942-8-Bromo Cyclic Adenosine Monophosphate,
pubmed-meshheading:3011942-Animals,
pubmed-meshheading:3011942-Cartilage,
pubmed-meshheading:3011942-Cyclic AMP,
pubmed-meshheading:3011942-Depression, Chemical,
pubmed-meshheading:3011942-Dexamethasone,
pubmed-meshheading:3011942-Dose-Response Relationship, Drug,
pubmed-meshheading:3011942-Mice,
pubmed-meshheading:3011942-Mice, Inbred Strains,
pubmed-meshheading:3011942-Thymidine
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pubmed:year |
1986
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pubmed:articleTitle |
Dexamethasone and 8-bromo-cyclic AMP depress the incorporation of [3H]thymidine into mouse condylar cartilage by different pathways.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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