Tracheospasmolytic activity of viteosin-A and vitexicarpin isolated from vitex trifolia.
Planta Med
; 68(11): 1047-9, 2002 Nov.
Article
em En
| MEDLINE
| ID: mdl-12451502
ABSTRACT
The n-hexane extract that has shown activity in the tracheospasmolytic bioassay was fractionated by solvent extraction and from the major active fraction two compounds were isolated and identified as viteosin-A and vitexicarpin. These compounds blocked spontaneous contraction of isolated male guinea pig trachea induced by histamine; however only vitexicarpin was active in a model using sensitized guinea pig trachea stimulated by ovalbumin up to minimum dose of 1.3 x 10(-5) M. The result suggests that vitexicarpin is able to block effects of histamine released from sensitized mast cells possibly by stabilizing the mast cells membrane function.
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Base de dados:
MEDLINE
Assunto principal:
Traqueia
/
Flavonoides
/
Espasmo Brônquico
/
Vitex
/
Isoquinolinas
/
Fitoterapia
Idioma:
En
Ano de publicação:
2002
Tipo de documento:
Article