Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)

Detalhes bibliográficos
Autor(a) principal: Moraga,FA
Data de Publicação: 2014
Outros Autores: Urriola-Urriola,N
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Biology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000300739
Resumo: Preliminary studies showed that dorsal artery contraction mediated by acetylcholine (ACh) is blocked with indomethacin in intertidal fish (Girella laevifrons). Our objective was to characterise the cholinergic pathway in several artery vessels of the G. laevifrons. Afferent and efferent branchial, dorsal and mesenteric arteries were dissected of 6 juvenile specimens, isometric tension studies were done using dose response curves (DRC) for Ach (10–13 to 10–3 M), and cholinergic pathways were obtained by blocking with atropine or indomethacin. CRC to ACh showed a pattern of high and low sensitivity. Furthermore, these contractions were blocked in the presence of atropine and indomethacin in all vessels. Our results suggest that contraction observed with acetylcholine is mediated by receptors that activate a cyclooxygenase contraction pathway.
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spelling Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)intertidal fishvascular reactivityacetylcholineatropineindomethacincycloxygenasePreliminary studies showed that dorsal artery contraction mediated by acetylcholine (ACh) is blocked with indomethacin in intertidal fish (Girella laevifrons). Our objective was to characterise the cholinergic pathway in several artery vessels of the G. laevifrons. Afferent and efferent branchial, dorsal and mesenteric arteries were dissected of 6 juvenile specimens, isometric tension studies were done using dose response curves (DRC) for Ach (10–13 to 10–3 M), and cholinergic pathways were obtained by blocking with atropine or indomethacin. CRC to ACh showed a pattern of high and low sensitivity. Furthermore, these contractions were blocked in the presence of atropine and indomethacin in all vessels. Our results suggest that contraction observed with acetylcholine is mediated by receptors that activate a cyclooxygenase contraction pathway.Instituto Internacional de Ecologia2014-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000300739Brazilian Journal of Biology v.74 n.3 2014reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/bjb.2014.0099info:eu-repo/semantics/openAccessMoraga,FAUrriola-Urriola,Neng2015-10-26T00:00:00Zoai:scielo:S1519-69842014000300739Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2015-10-26T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false
dc.title.none.fl_str_mv Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
title Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
spellingShingle Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
Moraga,FA
intertidal fish
vascular reactivity
acetylcholine
atropine
indomethacin
cycloxygenase
title_short Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
title_full Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
title_fullStr Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
title_full_unstemmed Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
title_sort Vascular function in arteries of intertidal fish Girella laevifrons(Kyphosidae)
author Moraga,FA
author_facet Moraga,FA
Urriola-Urriola,N
author_role author
author2 Urriola-Urriola,N
author2_role author
dc.contributor.author.fl_str_mv Moraga,FA
Urriola-Urriola,N
dc.subject.por.fl_str_mv intertidal fish
vascular reactivity
acetylcholine
atropine
indomethacin
cycloxygenase
topic intertidal fish
vascular reactivity
acetylcholine
atropine
indomethacin
cycloxygenase
description Preliminary studies showed that dorsal artery contraction mediated by acetylcholine (ACh) is blocked with indomethacin in intertidal fish (Girella laevifrons). Our objective was to characterise the cholinergic pathway in several artery vessels of the G. laevifrons. Afferent and efferent branchial, dorsal and mesenteric arteries were dissected of 6 juvenile specimens, isometric tension studies were done using dose response curves (DRC) for Ach (10–13 to 10–3 M), and cholinergic pathways were obtained by blocking with atropine or indomethacin. CRC to ACh showed a pattern of high and low sensitivity. Furthermore, these contractions were blocked in the presence of atropine and indomethacin in all vessels. Our results suggest that contraction observed with acetylcholine is mediated by receptors that activate a cyclooxygenase contraction pathway.
publishDate 2014
dc.date.none.fl_str_mv 2014-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000300739
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842014000300739
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/bjb.2014.0099
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Instituto Internacional de Ecologia
publisher.none.fl_str_mv Instituto Internacional de Ecologia
dc.source.none.fl_str_mv Brazilian Journal of Biology v.74 n.3 2014
reponame:Brazilian Journal of Biology
instname:Instituto Internacional de Ecologia (IIE)
instacron:IIE
instname_str Instituto Internacional de Ecologia (IIE)
instacron_str IIE
institution IIE
reponame_str Brazilian Journal of Biology
collection Brazilian Journal of Biology
repository.name.fl_str_mv Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)
repository.mail.fl_str_mv bjb@bjb.com.br||bjb@bjb.com.br
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