| pubmed-article:1540140 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C0032176 | lld:lifeskim |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C0033640 | lld:lifeskim |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C0037907 | lld:lifeskim |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C0442805 | lld:lifeskim |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C1149848 | lld:lifeskim |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C2349975 | lld:lifeskim |
| pubmed-article:1540140 | lifeskim:mentions | umls-concept:C0441712 | lld:lifeskim |
| pubmed-article:1540140 | pubmed:dateCreated | 1992-3-31 | lld:pubmed |
| pubmed-article:1540140 | pubmed:abstractText | Sphingosine (a potent inhibitor of protein kinase C) at 5-10 microM, which are concentrations lower than those that inhibit this enzyme activity, enhanced the aggregation of rabbit platelets induced by low concentrations of U46619, platelet-activating factor, thrombin and arachidonic acid, whereas H-7 and staurosporine, other protein kinase C inhibitors, failed to do so. Of the sphingosine analogues which also inhibit protein kinase C, psychosine and lyso-GM3 did not show such an enhancing effect. Sphingosine promoted both Ins(1,4,5)P3 formation and an increase in the cytoplasmic free Ca2+ concentration in response to all the agonists used. Furthermore, the hydrolytic action of exogenously added phospholipase C (from Clostridium perfringens) on platelet membrane phospholipids was dose-dependently enhanced by pretreatment of the platelets with sphingosine. These results imply that sphingosine, at relatively low concentrations, brings about hyperaggregability of the platelets by the agonists employed, probably owing to enhancement of the phospholipase C activity. Such an effect appears to be induced by a mechanism independent of protein kinase C inhibition. We suggest that sphingosine might act as a positive modulator for the stimulus-response coupling in the platelets. | lld:pubmed |
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| pubmed-article:1540140 | pubmed:language | eng | lld:pubmed |
| pubmed-article:1540140 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:1540140 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:1540140 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:1540140 | pubmed:month | Feb | lld:pubmed |
| pubmed-article:1540140 | pubmed:issn | 0264-6021 | lld:pubmed |
| pubmed-article:1540140 | pubmed:author | pubmed-author:SatoTT | lld:pubmed |
| pubmed-article:1540140 | pubmed:author | pubmed-author:FujiiTT | lld:pubmed |
| pubmed-article:1540140 | pubmed:author | pubmed-author:HashizumeTT | lld:pubmed |
| pubmed-article:1540140 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:1540140 | pubmed:day | 15 | lld:pubmed |
| pubmed-article:1540140 | pubmed:volume | 282 ( Pt 1) | lld:pubmed |
| pubmed-article:1540140 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:1540140 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:1540140 | pubmed:pagination | 243-7 | lld:pubmed |
| pubmed-article:1540140 | pubmed:dateRevised | 2010-9-7 | lld:pubmed |
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