Study on the proportion & mechanism of reliving asthma of drug partnership comprising herbal Ephedrae sinica & Pheretima aspergilum.
- Author:
Xiang-Ping CHU
1
;
Zhao-Hui XU
;
Guang-Xu ZHAN
;
Da-Zheng WU
;
Ming-Feng QIU
;
Wei JIA
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Anti-Asthmatic Agents; administration & dosage; pharmacology; Asthma; physiopathology; Dose-Response Relationship, Drug; Drugs, Chinese Herbal; administration & dosage; isolation & purification; pharmacology; Ephedra sinica; chemistry; Guinea Pigs; Histamine Antagonists; pharmacology; In Vitro Techniques; Male; Materia Medica; administration & dosage; isolation & purification; pharmacology; Muscle Relaxation; drug effects; Muscle, Smooth; drug effects; Oligochaeta; chemistry; Plants, Medicinal; chemistry; Rats; Rats, Sprague-Dawley
- From: China Journal of Chinese Materia Medica 2006;31(3):236-239
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the proportion and mechanism of relieving asthma of drug partnership comprising herbal Ephedrae & Pheretima.
METHODTo study relaxant effect on 10 micromol x L(-1) carbachol (CCh) and 10 micromol x L(-1) histamine (His) precontracted isolated tracheal rings and lowering effect on short-circuit current (Isc) increase induced by 10 micromol x L(-1) CCh with 3 proportions of 1:1, 1:3, 1:9 extract.
RESULT1:3 proportions dose-dependently relaxed CCh-precontracted isolated tracheal rings, IC50 of 1:1, 1:3 is 7.5, 15 mg x mL(-1) respectively, 1:9 could not produce 50% inhibition effect on CCh-evoked contraction; 3 proportions also dose-dependently relaxed His-precontracted isolated tracheal rings, IC50 of 1:9, 1:3 and 1:1 is 0.19, 0.61, 1.8 mg x mL(-1) respectively. On the other hand,the orders potency of the decrease effect on CCh-evoked short circuit current increase is 1:3 > 1:1 > 1:9. The difference is not significant (P < 0.05).
CONCLUSIONHerbal Ephedrae & Pheretima had tracheal muscle relaxant and epithelium ion secretion inhibition effect, its mechanism of relieving asthma involved anti-CCh and anti-His effect 1:3 was the most appropriate dosage ratio in the anti-asthmatic drug partnership.
