Effects of Panax quinquefolium 20s-protopanaxdiol saponins on the hemodynamics and cardial oxygen metabolism in dogs with acute myocardial infarc tion
- VernacularTitle:西洋参叶20S-原人参二醇组皂苷对急性心肌梗死犬血流动力学和氧代谢的影响
- Author:
Shangyu LIU
;
Dayuan SUI
;
Xiaofeng YU
;
Zhongzhi LU
;
Li WANG
- Publication Type:Journal Article
- From:
Chinese Pharmaceutical Journal
2001;(1):25-29
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To study the effects of Panax quinquef olium 20S-protopanaxdiol saponins extracted from the leaves of panax qu inque-folium (PQDS) on the hemodynamics and cardial oxygen metabolism in dogs with acute myocardial infarction (AMI).METHODS The paramete rs of hemodynamics and cardial oxygen metabolism were determined by using the mo del of ligation of LAD in the anaesthetized open-chest dogs.RESULTS In dogs treated with PQDS (in a dosage of 10 and 20 mg*kg-1 iv infusion),the myocardial blood flow (MBF) was increased and coronary vascular re sistance (CVR) was decreased significantly.The heart rate (HR) was slowed.The ar terial blood pressure (ABP),left ventricular pressure (LVP),the maximum rise rat e of left ventricular pressure(+dp/dtmax),left ventricular work index (LVW I) and total periphery resistance(TPR) were reduced,whereas the stroke index(SI) and cardiac index (CI) were increased.In addition,the decreasing range of the m aximum decline rate of left ventricular pressure(-dp/dtmax) and the rising range of left ventricular end diastolic pressure (LVEDP) were reduced.Meanwhile the cardiac oxygen consumption,myocardial oxygen utilization rate and cardiac o xygen consumption index were also decreased.CONCLUSION PQDS had protective effects on acute myocardial ischemia including improving heart fu nction,decreasing cardiac oxygen consumption and increasing myocardial blood flo w,etc.
