The effects of taurine on ECG changes induced by pituitrin in conscious unrestrained rats
- VernacularTitle:牛磺酸对垂体后叶素所致清醒无拘束大鼠心电图改变的影响
- Author:
Jie WANG
;
Jiyuan LU
;
Mingsheng ZHANG
;
Yueqin LIANG
- Publication Type:Journal Article
- Keywords:
taurine;
pituitrin;
conscious unrestrained rat;
ECG;
DSI
- From:
Chinese Pharmacological Bulletin
2003;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Aim To observe the effects of pituitrin ad- ministrated intravenously on electrocardiogram (ECG), and the effects of taurine on the ECG changes induced by pituitrin in conscious unrestrained rats. Methods ECG(leadⅡ)was recorded telemetrically and analyzed with Data Science International (DSI, USA); the changes of the ECG T wave and the heart rate at different times after the intravenous(iv) injection of pituitrin with or without intraperitoneal (ip) pre-administration of taurine were observed and calculated. Results ① Pituitrin 0.25～4.0 U?kg -1 dose-dependently elevated the ECG T wave; the T wave values were increased 0.75～3.42 times over the values before pituitrin, and the maximal effect appeared at 15 s after the injection. ② TAU 100, 200 or 400 mg?kg -1,injected intraperitoneally 30 min before the pituitrin, inhibited the T wave elevation and heart rate decrease induced by intravenous injection of pituitrin; compared with NS+pituitrin group, T wave elevation(mV) was decreased from 1.77?0.165 to 1.60?0.13(P
