| http://purl.uniprot.org/citations/15703175 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/15703175 | http://www.w3.org/2000/01/rdf-schema#comment | "Transforming growth factor (TGF)-beta and des-Arg(10)-kallidin stimulate the expression of connective tissue growth factor (CTGF), a matrix signaling molecule that is frequently overexpressed in fibrotic disorders. Because the early signal transduction events regulating CTGF expression are unclear, we investigated the role of Ca(2+) homeostasis in CTGF mRNA expression in TGF-beta1- and des-Arg(10)-kallidin-stimulated human lung myofibroblasts. Activation of the kinin B1 receptor with des-Arg(10)-kallidin stimulated a rise in cytosolic Ca(2+) that was extracellular Na(+)-dependent and extracellular Ca(2+)-dependent. The des-Arg(10)-kallidin-stimulated increase of cytosolic Ca(2+) was blocked by KB-R7943, a specific inhibitor of Ca(2+) entry mode operation of the plasma membrane Na(+)/Ca(2+) exchanger. TGF-beta1 similarly stimulated a KB-R7943-sensitive increase of cytosolic Ca(2+) with kinetics distinct from the des-Arg(10)-kallidin-stimulated Ca(2+) response. We also found that KB-R7943 or 2',4'-dichlorobenzamil, an amiloride analog that inhibits the Na(+)/Ca(2+) exchanger activity, blocked the TGF-beta1- and des-Arg(10)-kallidin-stimulated increases of CTGF mRNA. Pretreatment with KB-R7943 also reduced the basal and TGF-beta1-stimulated levels of alpha1(I) collagen and alpha smooth muscle actin mRNAs. These data suggest that, in addition to regulating ion homeostasis, Na(+)/Ca(2+) exchanger acts as a signal transducer regulating CTGF, alpha1(I) collagen, and alpha smooth muscle actin expression. Consistent with a more widespread role for Na(+)/Ca(2+) exchanger in fibrogenesis, we also observed that KB-R7943 likewise blocked TGF-beta1-stimulated levels of CTGF mRNA in human microvascular endothelial and human osteoblast-like cells. We conclude that Ca(2+) entry mode operation of the Na(+)/Ca(2+) exchanger is required for des-Arg(10)-kallidin- and TGF-beta1-stimulated fibrogenesis and participates in the maintenance of the myofibroblast phenotype."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.org/dc/terms/identifier | "doi:10.1074/jbc.m410052200"xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/author | "Rivera A."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/author | "Romero J.R."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/author | "Ricupero D.A."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/author | "Lanca V."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/author | "Bicho M.D."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/author | "Conlin P.R."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/date | "2005"xsd:gYear |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/name | "J Biol Chem"xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/pages | "14378-14384"xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/title | "Na+/Ca2+ exchanger activity modulates connective tissue growth factor mRNA expression in transforming growth factor beta1- and Des-Arg10-kallidin-stimulated myofibroblasts."xsd:string |
| http://purl.uniprot.org/citations/15703175 | http://purl.uniprot.org/core/volume | "280"xsd:string |
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