Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats
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Publication Date: | 2010 |
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Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UFS |
Download full: | https://ri.ufs.br/handle/riufs/1554 |
Summary: | C. citratus é utilizada na medicina popular para tratar hipertensão. Este trabalho investigou a composição química e os efeitos cardiovasculares do óleo essencial do C. citratus (OECC). Foram identificados oito constituintes no OECC, sendo geranial o majoritário (43,08%). Em ratos, o OECC (1, 5, 10 e 20 mg/kg, i.v.) induziu hipotensão e bradicardia que foram atenuadas pela atropina e tiopental sódico, mas não por L-NAME ou indometacina. Em anéis de artéria mesentérica de ratos pré-contraídos com fenilefrina, o OECC (1 a 3000 µg/mL) induziu relaxamento que não foi afetado após remoção do endotélio, após TEA ou em anéis pré- contraídos com KCl (80 mM). Além disso, o OECC (1000 µg/mL) não induziu efeito adicional sobre o relaxamento máximo da nifedipina (10 µM). Em conclusão, o OECC induz hipotensão possivelmente devido à redução da resistência vascular que pode ser causada por inibição do influxo de Ca2+, e bradicardia provavelmente devido à ativação de receptores muscarínicos cardíacos._________________________________________________________________________________________ ABSTRACT: Cymbopogon citratus DC. Stapf, Poaceae, is used in the folk medicine for hypertension treatment. This work investigated the chemical composition and cardiovascular effects in rats of C. citratus essential oil (EOCC). A phytochemical screening demonstrated the presence of eight constituents, being geranial the major compound (43.08%). In rats, EOCC (1, 5, 10, and 20 mg/kg, i.v.) induced transient hypotension and bradycardia that were attenuated by atropine and sodium thiopental, but not by L-NAME or indomethacin. In rings of rat superior mesenteric artery pre-contracted with phenylephrine, EOCC (1 to 3000 µg/mL) induced relaxation that was not affected after removal of the endothelium, after TEA or in rings pre-contracted with KCl (80 mM). Furthermore, EOCC (1000 µg/mL) was not able to induce additional effect on maximal relaxation of nifedipine (10 µM). In conclusions, EOCC induces hypotension, possibly by reduction in vascular resistance caused by inhibition of the Ca2+ influx, and bradycardia probably due to an activation of cardiac muscarinic receptors. |
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Moreira, Flávia VianaBastos, Joana Ferreira AlvesBlank, Arie FitzgeraldAlves, Péricles BarretoSantos, Márcio Roberto Viana dos2016-01-04T20:23:13Z2016-01-04T20:23:13Z2010-12MOREIRA, F. V. et al. Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats. Revista Brasileira de Farmacognosia, Curitiba, v. 20, n. 6, dez. 2010. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-695X2010000600013&lng=en&nrm=iso>. Acesso em: 04 jan. 2016.0102-695Xhttps://ri.ufs.br/handle/riufs/1554Creative Commons Attribution LicenseC. citratus é utilizada na medicina popular para tratar hipertensão. Este trabalho investigou a composição química e os efeitos cardiovasculares do óleo essencial do C. citratus (OECC). Foram identificados oito constituintes no OECC, sendo geranial o majoritário (43,08%). Em ratos, o OECC (1, 5, 10 e 20 mg/kg, i.v.) induziu hipotensão e bradicardia que foram atenuadas pela atropina e tiopental sódico, mas não por L-NAME ou indometacina. Em anéis de artéria mesentérica de ratos pré-contraídos com fenilefrina, o OECC (1 a 3000 µg/mL) induziu relaxamento que não foi afetado após remoção do endotélio, após TEA ou em anéis pré- contraídos com KCl (80 mM). Além disso, o OECC (1000 µg/mL) não induziu efeito adicional sobre o relaxamento máximo da nifedipina (10 µM). Em conclusão, o OECC induz hipotensão possivelmente devido à redução da resistência vascular que pode ser causada por inibição do influxo de Ca2+, e bradicardia provavelmente devido à ativação de receptores muscarínicos cardíacos._________________________________________________________________________________________ ABSTRACT: Cymbopogon citratus DC. Stapf, Poaceae, is used in the folk medicine for hypertension treatment. This work investigated the chemical composition and cardiovascular effects in rats of C. citratus essential oil (EOCC). A phytochemical screening demonstrated the presence of eight constituents, being geranial the major compound (43.08%). In rats, EOCC (1, 5, 10, and 20 mg/kg, i.v.) induced transient hypotension and bradycardia that were attenuated by atropine and sodium thiopental, but not by L-NAME or indomethacin. In rings of rat superior mesenteric artery pre-contracted with phenylephrine, EOCC (1 to 3000 µg/mL) induced relaxation that was not affected after removal of the endothelium, after TEA or in rings pre-contracted with KCl (80 mM). Furthermore, EOCC (1000 µg/mL) was not able to induce additional effect on maximal relaxation of nifedipine (10 µM). In conclusions, EOCC induces hypotension, possibly by reduction in vascular resistance caused by inhibition of the Ca2+ influx, and bradycardia probably due to an activation of cardiac muscarinic receptors.Universidade Federal do Paraná, Laboratório de FarmacognosiaCymbopogon citratusÓleos essenciaisEfeitos cardiovascularesRatosEssential oilCardiovascular effectsRatsChemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in ratsComposição química e efeitos cardiovasculares do óleo essencial de Cymbopogon citratus DC. 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dc.title.pt_BR.fl_str_mv |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
dc.title.alternative.pt_BR.fl_str_mv |
Composição química e efeitos cardiovasculares do óleo essencial de Cymbopogon citratus DC. Stapf, Poaceae, em ratos |
title |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
spellingShingle |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats Moreira, Flávia Viana Cymbopogon citratus Óleos essenciais Efeitos cardiovasculares Ratos Essential oil Cardiovascular effects Rats |
title_short |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
title_full |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
title_fullStr |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
title_full_unstemmed |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
title_sort |
Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats |
author |
Moreira, Flávia Viana |
author_facet |
Moreira, Flávia Viana Bastos, Joana Ferreira Alves Blank, Arie Fitzgerald Alves, Péricles Barreto Santos, Márcio Roberto Viana dos |
author_role |
author |
author2 |
Bastos, Joana Ferreira Alves Blank, Arie Fitzgerald Alves, Péricles Barreto Santos, Márcio Roberto Viana dos |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Moreira, Flávia Viana Bastos, Joana Ferreira Alves Blank, Arie Fitzgerald Alves, Péricles Barreto Santos, Márcio Roberto Viana dos |
dc.subject.por.fl_str_mv |
Cymbopogon citratus Óleos essenciais Efeitos cardiovasculares Ratos Essential oil Cardiovascular effects Rats |
topic |
Cymbopogon citratus Óleos essenciais Efeitos cardiovasculares Ratos Essential oil Cardiovascular effects Rats |
description |
C. citratus é utilizada na medicina popular para tratar hipertensão. Este trabalho investigou a composição química e os efeitos cardiovasculares do óleo essencial do C. citratus (OECC). Foram identificados oito constituintes no OECC, sendo geranial o majoritário (43,08%). Em ratos, o OECC (1, 5, 10 e 20 mg/kg, i.v.) induziu hipotensão e bradicardia que foram atenuadas pela atropina e tiopental sódico, mas não por L-NAME ou indometacina. Em anéis de artéria mesentérica de ratos pré-contraídos com fenilefrina, o OECC (1 a 3000 µg/mL) induziu relaxamento que não foi afetado após remoção do endotélio, após TEA ou em anéis pré- contraídos com KCl (80 mM). Além disso, o OECC (1000 µg/mL) não induziu efeito adicional sobre o relaxamento máximo da nifedipina (10 µM). Em conclusão, o OECC induz hipotensão possivelmente devido à redução da resistência vascular que pode ser causada por inibição do influxo de Ca2+, e bradicardia provavelmente devido à ativação de receptores muscarínicos cardíacos._________________________________________________________________________________________ ABSTRACT: Cymbopogon citratus DC. Stapf, Poaceae, is used in the folk medicine for hypertension treatment. This work investigated the chemical composition and cardiovascular effects in rats of C. citratus essential oil (EOCC). A phytochemical screening demonstrated the presence of eight constituents, being geranial the major compound (43.08%). In rats, EOCC (1, 5, 10, and 20 mg/kg, i.v.) induced transient hypotension and bradycardia that were attenuated by atropine and sodium thiopental, but not by L-NAME or indomethacin. In rings of rat superior mesenteric artery pre-contracted with phenylephrine, EOCC (1 to 3000 µg/mL) induced relaxation that was not affected after removal of the endothelium, after TEA or in rings pre-contracted with KCl (80 mM). Furthermore, EOCC (1000 µg/mL) was not able to induce additional effect on maximal relaxation of nifedipine (10 µM). In conclusions, EOCC induces hypotension, possibly by reduction in vascular resistance caused by inhibition of the Ca2+ influx, and bradycardia probably due to an activation of cardiac muscarinic receptors. |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-12 |
dc.date.accessioned.fl_str_mv |
2016-01-04T20:23:13Z |
dc.date.available.fl_str_mv |
2016-01-04T20:23:13Z |
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.citation.fl_str_mv |
MOREIRA, F. V. et al. Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats. Revista Brasileira de Farmacognosia, Curitiba, v. 20, n. 6, dez. 2010. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-695X2010000600013&lng=en&nrm=iso>. Acesso em: 04 jan. 2016. |
dc.identifier.uri.fl_str_mv |
https://ri.ufs.br/handle/riufs/1554 |
dc.identifier.issn.none.fl_str_mv |
0102-695X |
dc.identifier.license.pt_BR.fl_str_mv |
Creative Commons Attribution License |
identifier_str_mv |
MOREIRA, F. V. et al. Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats. Revista Brasileira de Farmacognosia, Curitiba, v. 20, n. 6, dez. 2010. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-695X2010000600013&lng=en&nrm=iso>. Acesso em: 04 jan. 2016. 0102-695X Creative Commons Attribution License |
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https://ri.ufs.br/handle/riufs/1554 |
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eng |
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openAccess |
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Universidade Federal do Paraná, Laboratório de Farmacognosia |
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Universidade Federal do Paraná, Laboratório de Farmacognosia |
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