The effects of Radix Ginseng Rubra on cAMP of experimental ischemic myocardium in rats |
| |
Authors: | Liu Zhengxiang Zhang Jian Ouyang Xingbiao Liu Xiaochun Guan Xinmin |
| |
Institution: | (1) Department of Cardiology, Tongji Hospital, China;(2) Department of Neurobiology, Tongji Medical University, 430030 Wuhan |
| |
Abstract: | Summary The model of SD rats ligated at the proximate left anterior descend (LAD) of coronary was used. The number and dissociation
constant of β receptor were studied by using receptor autoradiography to observe the changes in β receptor and the effects
of Radix Ginseng Rubra on cAMP in experimental ischemic my-ocardium. The result showed that the number of binding site in
simple ligation group (Bmax = 0. 279) was obviously higher than that in sham operation group (Bmax = 0. 093) and the dissociation constant of simple ligation group (Kd = 12. 431) was higher than that of sham operation group
(kd = l. 319). There was a significant difference between the two groups (P<0. 05). It proved that the number of β receptor was
increased and the activity was elevated in myocardial cell membranes after ligation of LAD. The myocardial cAMP level in simple
ligation group (1293. 96±519. 36) × 10-3 nmol/g] was much higher than that in sham operation group (774. 44 ±210. 55) × 10-3nmol/g]; but the level of cAMP in ligation group after receiving Radix Ginseng Rubra treatment (805. 02 ±362. 48 pm/g) was
obviously lower than that in simple ligation group (P<0. 01), which was close to the result of sham operation. The results
indicated that Radix Ginseng Rubra could decrease the cAMP level in ischemic myocardium.
This project was supported by grants from National Natural Science Foundation of China (No. 3870563). |
| |
Keywords: | Radix Ginseng Rubra ischemic myocardium β receptor cAMP |
本文献已被 CNKI SpringerLink 等数据库收录! |