| pubmed-article:12773302 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:12773302 | lifeskim:mentions | umls-concept:C0001339 | lld:lifeskim |
| pubmed-article:12773302 | lifeskim:mentions | umls-concept:C0597295 | lld:lifeskim |
| pubmed-article:12773302 | lifeskim:mentions | umls-concept:C0606869 | lld:lifeskim |
| pubmed-article:12773302 | lifeskim:mentions | umls-concept:C0058989 | lld:lifeskim |
| pubmed-article:12773302 | lifeskim:mentions | umls-concept:C1280500 | lld:lifeskim |
| pubmed-article:12773302 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:12773302 | pubmed:dateCreated | 2003-8-11 | lld:pubmed |
| pubmed-article:12773302 | pubmed:abstractText | Acute pancreatitis (AP) has been shown in some studies to inhibit total protein synthesis in the pancreas, whereas in other studies, protein synthesis was not affected. Previous in vitro work has shown that high concentrations of cholecystokinin both inhibit protein synthesis and inhibit the activity of the guanine nucleotide exchange factor eukaryotic initiation factor (eIF)2B by increasing the phosphorylation of eIF2alpha. We therefore evaluated in C57BL/6 mice the effects of caerulein-induced AP on pancreatic protein synthesis, eIF2B activity and other protein translation regulatory mechanisms. Repetitive hourly injections of caerulein were administered at 50 microg/kg ip. Pancreatic protein synthesis was reduced 10 min after the initial caerulein administration and was further inhibited after three and five hourly injections. Caerulein inhibited the two major regulatory points of translation initiation: the activity of the guanine nucleotide exchange factor eIF2B (with an increase of eIF2alpha phosphorylation) and the formation of the eIF4F complex due, in part, to degradation of eIF4G. This inhibition was not accounted for by changes in the upstream stimulatory pathway, because caerulein activated Akt as well as phosphorylating the downstream effectors of mTOR, 4E-BP1, and ribosomal protein S6. Caerulein also decreased the phosphorylation of the eukaryotic elongation factor 2, implying that this translation factor was not inhibited in AP. Thus the inhibition of pancreatic protein synthesis in this model of AP most likely results from the inhibition of translation initiation as a result of increased eIF2alpha phosphorylation, reduction of eIF2B activity, and the inhibition of eIF4F complex formation. | lld:pubmed |
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| pubmed-article:12773302 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:12773302 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:12773302 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:12773302 | pubmed:month | Sep | lld:pubmed |
| pubmed-article:12773302 | pubmed:issn | 0193-1857 | lld:pubmed |
| pubmed-article:12773302 | pubmed:author | pubmed-author:SansMaria... | lld:pubmed |
| pubmed-article:12773302 | pubmed:author | pubmed-author:WilliamsJohn... | lld:pubmed |
| pubmed-article:12773302 | pubmed:author | pubmed-author:D'AlecyLouis... | lld:pubmed |
| pubmed-article:12773302 | pubmed:author | pubmed-author:DiMagnoMatthe... | lld:pubmed |
| pubmed-article:12773302 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:12773302 | pubmed:volume | 285 | lld:pubmed |
| pubmed-article:12773302 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:12773302 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:12773302 | pubmed:pagination | G517-28 | lld:pubmed |
| pubmed-article:12773302 | pubmed:dateRevised | 2010-11-18 | lld:pubmed |
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| pubmed-article:12773302 | pubmed:year | 2003 | lld:pubmed |
| pubmed-article:12773302 | pubmed:articleTitle | Caerulein-induced acute pancreatitis inhibits protein synthesis through effects on eIF2B and eIF4F. | lld:pubmed |
| pubmed-article:12773302 | pubmed:affiliation | Department of Molecular and Integrative Physiology, The University of Michigan Medical School, Ann Arbor, MI 48109-0622, USA. mdsansg@umich.edu | lld:pubmed |
| pubmed-article:12773302 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:12773302 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
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