ABSTRACT
This study was aimed to investigate the antitussive,expectorant,antiasthmatic and anti-inflammatory effect of Ju-Hong Tan-Ke (JHTK) liquid.The methods of cough induced by ammonia in mice and cough induced by citric acid in guinea pigs were used to observe the antitussive effects.The mouse phenolsulfonphthalein excretion method,rat capillary expectoration method and the rabbit tracheal cilia movement influence experiment were used to observe the expectorant effect.An experiment of allergen induced rats' asthma was used to observe the antiasthmatic effects.The anti-inflammatory effect was observed by mouse peritoneal capillary permeability test and xylene induced ear swelling in mice.The results showed that JHTK liquid could inhibit cough induced by ammonia in mice,decrease the frequency of cough induced by citric acid in guinea pig and prolong the latent period of cough.The medicine could also obviously increase phenol red output of trachea in mice,promote expectoration in rats,accelerate the movement of cilium of tracheal transparently and prolong the latent period of asthma induced by allergens in rats,inhibit capillary permeability and lighten ear edema in mouse model.It was concluded that JHTK liquid could inhibit the reflex cough caused by hypersensitivity of airway sensor.It is peripheral antitussive rather than central antitussive,which has significant antitussive,expectorant,antiasthmatic and anti-inflammatory effects.Its efficacy is superior or equivalent to positive chemical control medicine.