dc.contributor.author | Muñoz Acedo, Gema | |
dc.contributor.author | Rodríguez Martín, Eulalia | |
dc.contributor.author | Puebla Jiménez, Lilian | |
dc.contributor.author | Arilla Ferreiro, Eduardo | |
dc.date.accessioned | 2008-11-14T11:28:40Z | |
dc.date.available | 2008-11-14T11:28:40Z | |
dc.date.issued | 1997 | |
dc.identifier.bibliographicCitation | Life Sciences, 1997, v. 60, n. 22, p. 1965-1976 | en |
dc.identifier.issn | 0024-3205 | |
dc.identifier.uri | http://hdl.handle.net/10017/2248 | |
dc.description.abstract | Pretreatment of pancreatic acini with 5-hydroxytryptamine (5-HT) reduced the binding of the labeled somatostatin (SS) analogue 125I-Tyr3-SMS to pancreatic acinar membranes. This effect was dependent of the dose of 5-HT used and length of pretreatment. This inhibitory effect of 5-HT was abolished when pancreatic acini were pretreated with 5-HT in the presence of the 5-HT1P receptor-antagonist 5-hydroxytryptophyl-5-hydroxytryptophan amide (5-HTP-DP). Pretreatment of pancreatic acini with 5-HT reduced the inhibition by the stable SS analogue SMS 201-995 of basal and forskolin (FK)-stimulated adenylyl cyclase (AC) activity in pancreatic acinar membranes. There was no statistical difference established between IC50 values for the stable GTP analogue 5'-guanylylimidodiphosphate (Gpp(NH)p) which inhibits ligand binding to SMS receptors in controls and in 5-HT treated pancreatic cells, respectively. In addition, no significant differences were seen in the level of Gi proteins in the control and 5-HT treated panceatic acini. These data suggest that the decrease of the number of 125I-Tyr3-SMS receptors, would explain the decreased sensitivity of AC to SMS 201-995 in membranes from 5-HT-pretreated acini. | en |
dc.description.sponsorship | Universidad de Alcalá | es_ES |
dc.description.sponsorship | Ministerio de Educación y Cultura | es_ES |
dc.format.mimetype | application/pdf | en |
dc.language.iso | eng | en |
dc.publisher | Elsevier | en |
dc.rights | (c) Elsevier, 1997 | en |
dc.subject | Somatostatin | en |
dc.subject | Serotonin | en |
dc.subject | Pancreas | en |
dc.title | 5-Hydroxytryptamine decreases somatostatin receptors and somatostatin-responsive adenylyl cyclase in rat pancreatic acinar membranes | en |
dc.type | info:eu-repo/semantics/article | en |
dc.subject.eciencia | Bioquímica | es_ES |
dc.subject.eciencia | Biochemistry | en |
dc.subject.eciencia | Science | en |
dc.subject.eciencia | Ciencia | es_ES |
dc.contributor.affiliation | Universidad de Alcalá. Departamento de Bioquímica y Biología Molecular | |
dc.relation.publisherversion | http://www.dx.doi.org/10.1016/S0024-3205(97)00161-6 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | en |
dc.identifier.doi | 10.1016/S0024-3205(97)00161-6 | |
dc.relation.projectID | info:eu-repo/grantAgreement/UAH//001%2F96/ES/REGULACION DEL SISTEMA RECEPTOR-EFECTOR DE LA SOMATOSTATINA POR EL NEUROPEPTIDO Y (NPY) EN EL CEREBRO DE LA RATA | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MEC//PM95-0041/ES/EFECTO DEL OXIDO NITRICO SOBRE EL SISTEMA RECEPTOR-EFECTOR DE LA SOMATOSTATINA EN EL CEREBRO HUMANO Y DE RATA | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | en |