Objective: To discuss the significance of processing and complex prescription with Herba Ephedrae, the effects of Herba Ephedrae, Honey-fried Herba Ephedrae and Maxingshigan decoction on autonomic activities in mice were compared.

Methods: 110 female Kunming mice were divided into 11 groups, namely normal saline group (NS), ephedrine group (E), high dose Herba Ephedrae group (MH-H), moderate dose Herba Ephedrae group (MH-M), low dose Herba Ephedrae group (MH-L) ,high dose Honey-fried Herba Ephedrae group (ZMH-H), moderate dose Honey-fried Herba Ephedrae group (ZMH-M),low dose Honey-fried Herba Ephedrae group (ZMH-L), high dose Maxingshigan decoction group (MX-H), moderate dose Maxingshigan decoction group (MX-M) and low dose Maxingshigan decoction group (MX-L). The numbers of autonomic activity in 15 minutes before intragastric administration (ig), and after ig 0.5, 1, 2, 3, 4 h were determined.

Results: There was interaction between time and groups. There were very significant differences between before ig and all time-points after ig (P < 0.01). 30 minutes after ig,there were significant differences between E and NS,E and ZMH-L,E and MX-L (P < 0.05). 1 h after ig, there were significant differences between MX-M and NS (P < 0.05). 3 h after ig, there were significant differences between MX-M and MH-L (P < 0.05). 30 minutes after ig, both ZMH-L and MX-L could reduce the number of autonomic activity in some extent compare with MH-L. 1 h or 2 h after ig, ZMH-L could reduce the number of autonomic activity in some extent compare with MH-L 4 h after ig, MX-L could reduce the number of autonomic activity in some extent compare with MH-L.

Conclusion: Under the condition of this study, regarding autonomic activity as index, both ZMH-L and MX-L can reduce center stimulation in some extent.

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