rdf:type |
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lifeskim:mentions |
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pubmed:issue |
4
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pubmed:dateCreated |
1999-3-25
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pubmed:abstractText |
Transient expression in COS-7 cells of the recombinant human 5-hydroxytryptamine (5-HT) h5-HT4(c) receptor isoform led to constitutive activity of the receptor. The 5-HT4 receptor antagonist 2-(cis-3,5-dimethylpiperidino)ethyl 4-amino-5-chloro-2-methoxybenzoate (ML10375) at 1 microM completely abolished the 5-HT (1 microM)-mediated increase in adenylyl cyclase activity in COS-7 cells expressing the h5-HT4(c) receptor. Moreover, ML10375 also reduced basal cAMP levels in cells over-expressing the receptor, even in the absence of agonist. The inhibitory effect of ML10375 on basal adenylyl cyclase activity was not modified by pre-treatment of the cells with pertussis toxin, indicating that ML10375 acts through inactivation of spontaneously active h5-HT4(c) receptors rather than through a Gi/Go regulatory pathway. We conclude that ML10375 acts as an inverse agonist on the h5-HT4(c) receptor.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adenylate Cyclase,
http://linkedlifedata.com/resource/pubmed/chemical/Adenylate Cyclase Toxin,
http://linkedlifedata.com/resource/pubmed/chemical/Aminobenzoic Acids,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclic AMP,
http://linkedlifedata.com/resource/pubmed/chemical/Pertussis Toxin,
http://linkedlifedata.com/resource/pubmed/chemical/Piperidines,
http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Serotonin,
http://linkedlifedata.com/resource/pubmed/chemical/Recombinant Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Serotonin,
http://linkedlifedata.com/resource/pubmed/chemical/Serotonin Antagonists,
http://linkedlifedata.com/resource/pubmed/chemical/Virulence Factors, Bordetella
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0007-1188
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
125
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
595-7
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pubmed:dateRevised |
2008-11-20
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pubmed:meshHeading |
pubmed-meshheading:9831890-Adenylate Cyclase,
pubmed-meshheading:9831890-Adenylate Cyclase Toxin,
pubmed-meshheading:9831890-Aminobenzoic Acids,
pubmed-meshheading:9831890-Animals,
pubmed-meshheading:9831890-COS Cells,
pubmed-meshheading:9831890-Cyclic AMP,
pubmed-meshheading:9831890-Humans,
pubmed-meshheading:9831890-Pertussis Toxin,
pubmed-meshheading:9831890-Piperidines,
pubmed-meshheading:9831890-Receptors, Serotonin,
pubmed-meshheading:9831890-Recombinant Proteins,
pubmed-meshheading:9831890-Serotonin,
pubmed-meshheading:9831890-Serotonin Antagonists,
pubmed-meshheading:9831890-Transfection,
pubmed-meshheading:9831890-Virulence Factors, Bordetella
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pubmed:year |
1998
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pubmed:articleTitle |
The 5-HT4 receptor antagonist ML10375 inhibits the constitutive activity of human 5-HT4(c) receptor.
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pubmed:affiliation |
Institut de Signalisation et Innovation Thérapeutique (IFR-ISIT), Laboratoire de Cardiologie Cellulaire et Moléculaire, INSERM U-446, Université de Paris-Sud, Faculté de Pharmacie, Châtenay-Malabry, France.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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