Effects of rhodiola crenulata compound on serum corticosterone and myocardial glucocorticoid receptor in rats exposed high sustained positive acceleration
10.3969.j.issn.1671.7856.2014.005.001
- VernacularTitle:复方红景天制剂对高正加速度应激大鼠血清皮质酮及心肌组织糖皮质激素受体的影响
- Author:
Liangen CHEN
;
Hao ZHAN
;
Feng WU
;
Andong ZHAO
;
Minghao YANG
- Publication Type:Journal Article
- Keywords:
Rhodiola crenulata compound;
High sustained +Gz stress;
Corticosterone;
Glucocorticoid receptor
- From:
Chinese Journal of Comparative Medicine
2014;(5):1-4
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of rhodiola crenulata compound on serum corticosterone and myocardial glucocorticoid receptor ( GR) in rats exposed high sustained +Gz.Methods Seventy-two healthy SD rats were randomly divided into six groups: blank control group, stress control group, +10 Gz stress group and low, medium, high dose drug group, with twelve rats in each.20 mL/kg menstruum was fed to each rat once per day for 14 days.Low, medium and high dose drug group were fed with rhodiola crenulata compound at doses of 0.75 g/kg, 1.5 g/kg and 3.0 g/kg respectively, the other three groups were fed with equal volume saline.Rats were exposed to high +Gz in 15th day.The concentration of corticosterone in the serum of each group rats was detected with ELISA. Western blot was used to detect the expressions of GR in the myocardium of each group rats .Results The content of corticosterone was significantly elevated in +10Gz stress group, while the expression of GR in the myocardium was markedly declined (P <0.01,P <0.05).However, compound preconditioning could decrease concentration of corticosterone in the serum and enhance the expression of GR in the myocardium from rats after +10 Gz exposure. The corticosterone concentration of medium and high dose drug groups was significantly lower and the level of GR expression in the myocardium was significantly higher than that of +10 Gz stress group ( P <0.05 , P <0.01 ) . Conclusion Rhodiola crenulata compound preconditioning could regulate the concentration of corticosterone in the serum and the level of GR expression in the myocardium of the rats exposed +10 Gz, which may be related with its protective effect on high sustained +Gz-induced injury of myocardium.
