Regulation of human umbilical artery contractility by different serotonin and histamine receptors
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/546 |
Resumo: | We studied the role of several serotonin (5-HT) and histamine receptors in the regulation of human umbilical artery (HUA) contractility. Among the 5-HT agonists used, only the 5-HT2A and 5HT1B/D agonists contracts HUA. The 5-HT-induced contractions were fully inhibited by ketanserin (5-HT2A antagonist). The 5-HT7-activation also relaxes and increases intracellular cyclic adenosine monophosphate (cAMP). Among the histamine receptor agonists, only betahistine (H1 agonist) induced significant contractile effect. Histamine-induced contraction was partially relaxed by pyrilamine (H1 antagonist). Betahistine-induced contraction was partially blocked by dimaprit (H2 agonist) and by the H3 agonist when a low concentration of forskolin is present. Both, H2 and H3 agonists increased the cAMP intracellular levels in HUA smooth muscle. These findings show that in HUA, 5-HT2A- and 5-HT1B/1D-activation lead to vasoconstriction and 5-HT7-activation induces vasorelaxation. Concerning histamine receptors, H1-activation induces contraction and H2- and H 3-activation lead to vasorelaxation. |
id |
RCAP_86235c5b23ec89d5c37714f7d27c85af |
---|---|
oai_identifier_str |
oai:ubibliorum.ubi.pt:10400.6/546 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Regulation of human umbilical artery contractility by different serotonin and histamine receptorsWe studied the role of several serotonin (5-HT) and histamine receptors in the regulation of human umbilical artery (HUA) contractility. Among the 5-HT agonists used, only the 5-HT2A and 5HT1B/D agonists contracts HUA. The 5-HT-induced contractions were fully inhibited by ketanserin (5-HT2A antagonist). The 5-HT7-activation also relaxes and increases intracellular cyclic adenosine monophosphate (cAMP). Among the histamine receptor agonists, only betahistine (H1 agonist) induced significant contractile effect. Histamine-induced contraction was partially relaxed by pyrilamine (H1 antagonist). Betahistine-induced contraction was partially blocked by dimaprit (H2 agonist) and by the H3 agonist when a low concentration of forskolin is present. Both, H2 and H3 agonists increased the cAMP intracellular levels in HUA smooth muscle. These findings show that in HUA, 5-HT2A- and 5-HT1B/1D-activation lead to vasoconstriction and 5-HT7-activation induces vasorelaxation. Concerning histamine receptors, H1-activation induces contraction and H2- and H 3-activation lead to vasorelaxation.uBibliorumVerde, IgnacioSilva, António José SantosCairrão, ElisaMarques, Bruno2010-04-28T10:06:46Z20092009-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/546enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:35:46Zoai:ubibliorum.ubi.pt:10400.6/546Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:42:35.761782Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
title |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
spellingShingle |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors Verde, Ignacio |
title_short |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
title_full |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
title_fullStr |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
title_full_unstemmed |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
title_sort |
Regulation of human umbilical artery contractility by different serotonin and histamine receptors |
author |
Verde, Ignacio |
author_facet |
Verde, Ignacio Silva, António José Santos Cairrão, Elisa Marques, Bruno |
author_role |
author |
author2 |
Silva, António José Santos Cairrão, Elisa Marques, Bruno |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Verde, Ignacio Silva, António José Santos Cairrão, Elisa Marques, Bruno |
description |
We studied the role of several serotonin (5-HT) and histamine receptors in the regulation of human umbilical artery (HUA) contractility. Among the 5-HT agonists used, only the 5-HT2A and 5HT1B/D agonists contracts HUA. The 5-HT-induced contractions were fully inhibited by ketanserin (5-HT2A antagonist). The 5-HT7-activation also relaxes and increases intracellular cyclic adenosine monophosphate (cAMP). Among the histamine receptor agonists, only betahistine (H1 agonist) induced significant contractile effect. Histamine-induced contraction was partially relaxed by pyrilamine (H1 antagonist). Betahistine-induced contraction was partially blocked by dimaprit (H2 agonist) and by the H3 agonist when a low concentration of forskolin is present. Both, H2 and H3 agonists increased the cAMP intracellular levels in HUA smooth muscle. These findings show that in HUA, 5-HT2A- and 5-HT1B/1D-activation lead to vasoconstriction and 5-HT7-activation induces vasorelaxation. Concerning histamine receptors, H1-activation induces contraction and H2- and H 3-activation lead to vasorelaxation. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009 2009-01-01T00:00:00Z 2010-04-28T10:06:46Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.6/546 |
url |
http://hdl.handle.net/10400.6/546 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799136326764724224 |