Experimental evaluation of the antihistamine effect of domestic azelastine hydrochloride / 中国临床药理学与治疗学
Chinese Journal of Clinical Pharmacology and Therapeutics
;
(12)2002.
Article
in Chinese
| WPRIM
| ID: wpr-555114
ABSTRACT
AIM:
To evaluate the antihistamine effects of domestic azelastine hydrochloride.METHODS:
Histamine increased skin vascular permeability and induced shock model in guinea pigs. In isolated guinea pig ileal rings, the contraction of smooth muscle induced by histamine was determined.RESULTS:
Pretreament with azelastine hydrochloride( 0.05, 0.15,and 0.45 mg?kg -1,ig) significantly inhibited the increase in skin vascular permeability induced by histamine in a dose-dependent manner in guinea pigs. Pretreament with azelastine hydrochloride( 0.05, 0.1,and 0.2 mg?kg -1,ig)produced a significant improvement of shock, as shown by a decrease in reactivity degree, mortality and a prolongation of latency. In isolated guinea pig ileal rings, azelastine hydrochloride (10 -8,3?10 -8,10 -7,3? 10 -7 mol?L -1)significantly inhibited contraction of smooth muscle induced by histamine in a concentration-dependent manner and caused a parallel right shift of the dose-effect curve of histamine (pA 2= 8.55).CONCLUSION:
Domestic azelastine hydrochloride shows significant the antihistamine effects.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Clinical Pharmacology and Therapeutics
Year:
2002
Type:
Article
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