| pubmed-article:11350858 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C0024660 | lld:lifeskim |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C1704336 | lld:lifeskim |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C0001044 | lld:lifeskim |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C0006669 | lld:lifeskim |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C0220781 | lld:lifeskim |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C1883254 | lld:lifeskim |
| pubmed-article:11350858 | lifeskim:mentions | umls-concept:C0443252 | lld:lifeskim |
| pubmed-article:11350858 | pubmed:issue | 2 | lld:pubmed |
| pubmed-article:11350858 | pubmed:dateCreated | 2001-5-14 | lld:pubmed |
| pubmed-article:11350858 | pubmed:abstractText | The present study analyses the short- (15 min - 2 h) and long-term (24 - 48 h) influences of calcitonin gene-related peptide (CGRP) on acetylcholinesterase (AChE) expression in the rat cultured skeletal muscle and the signal transduction events underlying CGRP actions. To assess the effect of CGRP on AChE synthesis, myotubes were pre-exposed to the irreversible AChE inhibitor diisopropyl fluorophosphate (DFP) and treated with CGRP or forskolin, an adenylyl cyclase (AC) activator. Treatment of myotubes with 1 - 100 nM CGRP for 2 h increased by up to 42% the synthesis of catalytically active AChE with a parallel increase in the intracellular cyclic AMP. The stimulation of AChE synthesis induced by CGRP was mimicked by direct activation of AC with 3 - 30 microM forskolin. In contrast, pre-treatment of cultures with 100 nM CGRP for 20 h reduced by 37% the subsequent synthesis of AChE, resulting in a 15% decrease in total AChE activity after 48 h CGRP treatment. Moreover, 24 h treatment of myotubes with 100 nM CGRP reduced by 54% the accumulation of cyclic AMP induced by a subsequent CGRP treatment. These findings indicate that, in skeletal muscle cells, CGRP modulates the AChE expression in a time-dependent manner, initially stimulating the enzyme synthesis through a cyclic AMP-dependent mechanism. The decreased AChE synthesis observed after long-term CGRP treatment suggests that CGRP signalling system is subject to desensitization or down-regulation, that might function as an important adaptative mechanism of the muscle fibre in response to long-term changes in neuromuscular transmission. | lld:pubmed |
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| pubmed-article:11350858 | pubmed:language | eng | lld:pubmed |
| pubmed-article:11350858 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:11350858 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:11350858 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:11350858 | pubmed:month | May | lld:pubmed |
| pubmed-article:11350858 | pubmed:issn | 0007-1188 | lld:pubmed |
| pubmed-article:11350858 | pubmed:author | pubmed-author:LapaA JAJ | lld:pubmed |
| pubmed-article:11350858 | pubmed:author | pubmed-author:GodinhoR ORO | lld:pubmed |
| pubmed-article:11350858 | pubmed:author | pubmed-author:da CostaV... | lld:pubmed |
| pubmed-article:11350858 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:11350858 | pubmed:volume | 133 | lld:pubmed |
| pubmed-article:11350858 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:11350858 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:11350858 | pubmed:pagination | 229-36 | lld:pubmed |
| pubmed-article:11350858 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:11350858 | pubmed:meshHeading | pubmed-meshheading:11350858... | lld:pubmed |
| pubmed-article:11350858 | pubmed:year | 2001 | lld:pubmed |
| pubmed-article:11350858 | pubmed:articleTitle | Short- and long-term influences of calcitonin gene-related peptide on the synthesis of acetylcholinesterase in mammalian myotubes. | lld:pubmed |
| pubmed-article:11350858 | pubmed:affiliation | Department of Pharmacology (INFAR), Universidade Federal de São Paulo - Escola Paulista de Medicina, 04044-020 Rua Três de Maio 100, São Paulo, SP, Brazil. | lld:pubmed |
| pubmed-article:11350858 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:11350858 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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