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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
22
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pubmed:dateCreated |
1984-1-26
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pubmed:abstractText |
3-Isobutylmethylxanthine (IBMX), a potent phosphodiesterase inhibitor, causes accumulation of putrescine of same magnitude in rat pancreas and liver. IBMX produces increases of acetyl CoA: polyamine N'-acetyltransferase (PAT) and of ornithine decarboxylase (ODC) activities in both organs. However ODC activity is 300 times higher in liver than in pancreas. In the latter organ, there is a transient increase of N1-acetylspermidine, followed by a decrease of spermidine, alpha-Difluoromethylornithine (DFMO), a potent ODC inhibitor, impairs the accumulation of putrescine in liver but not in pancreas. These results suggest that in pancreas the accumulated putrescine is essentially formed from spermidine, via N1-acetylation and oxidation, while in liver it is formed from decarboxylation of ornithine. A possible involvement of cAMP in the stimulation of the polyamine interconversion pathway is discussed.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/1-Methyl-3-isobutylxanthine,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclic AMP,
http://linkedlifedata.com/resource/pubmed/chemical/Ornithine Decarboxylase,
http://linkedlifedata.com/resource/pubmed/chemical/Putrescine,
http://linkedlifedata.com/resource/pubmed/chemical/Theophylline
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pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0024-3205
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
28
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pubmed:volume |
33
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2173-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6196591-1-Methyl-3-isobutylxanthine,
pubmed-meshheading:6196591-Animals,
pubmed-meshheading:6196591-Cyclic AMP,
pubmed-meshheading:6196591-Liver,
pubmed-meshheading:6196591-Male,
pubmed-meshheading:6196591-Ornithine Decarboxylase,
pubmed-meshheading:6196591-Pancreas,
pubmed-meshheading:6196591-Putrescine,
pubmed-meshheading:6196591-Rats,
pubmed-meshheading:6196591-Rats, Inbred Strains,
pubmed-meshheading:6196591-Theophylline
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pubmed:year |
1983
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pubmed:articleTitle |
Comparison of 3-isobutyl-1-methylxanthine-induced accumulation of putrescine in rat pancreas and liver.
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pubmed:publicationType |
Journal Article,
Comparative Study
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