Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats

Bibliographic Details
Main Author: Moreira, Flávia Viana
Publication Date: 2010
Other Authors: Bastos, Joana Ferreira Alves, Blank, Arie Fitzgerald, Alves, Péricles Barreto, Santos, Márcio Roberto Viana dos
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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spelling 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
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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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publisher.none.fl_str_mv Universidade Federal do Paraná, Laboratório de Farmacognosia
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