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Article in Chinese | WPRIM | ID: wpr-906241


Objective:To evaluate the analgesic effects of Wenjing Zhitong prescription (WZP) and explore its possible analgesic mechanisms so as to provide experimental basis for research and development of new Chinese medicine. Method:Analgesic effects of WZP were evaluated by observing the writhing latency and number in the writhing models which were induced by oxytocin in rats as well as those induced by acetic acid and prostaglandin E<sub>1</sub> (PGE<sub>1</sub>), respectively in mice. Effect of WZP on uterine contraction frequency, amplitude and activity were evaluated by observing the oxytocin-induced contraction of uterine smooth muscle in rats and rabbits <italic>in vivo</italic>. In the oxytocin-induced rat writhing models, the content of prostaglandin F<sub>2</sub><italic><sub>α </sub></italic>(PGF<sub>2</sub><italic><sub>α</sub></italic>) and prostaglandin E<sub>2 </sub>(PGE<sub>2</sub>) in rat uterine tissues and the content of beta-endorphins (<italic>β</italic>-EP) in rat serum were detected by enzyme-linked immunosorbent assay (ELISA). Expression of estrogen receptor (ER) and oxytocin receptor (OTR) in rat uterine were tested by Real-time polymerase chain reaction(Real-time PCR) method to investigate the possible molecular mechanism of WZP for its analgesic effect. Result:Results of analgesic effect showed that in oxytocin-induced rat writhing experiment, the number of writhing responses in both the WZP (1.5,3.0 g·kg<sup>-1</sup>) group was lower than than in the model group (<italic>P</italic><0.05). In acetic acid-induced mice writhing experiment, the latency of writhing response in WZP (6.0 g·kg<sup>-1</sup>) group was significantly prolonged as compared with that in model group <italic>(P</italic><0.01), and the number of writhing response was significantly reduced (<italic>P</italic><0.05). In PGE<sub>1</sub>-induced mice writhing model, the writhing number in WZP (1.5,3.0,6.0 g·kg<sup>-1</sup>) groups was significantly lower than that in the model group (<italic>P</italic><0.05,<italic>P</italic><0.01). Results of effect on uterine smooth muscle demonstrated that WZP (0.38,0.75,1.50 g·kg<sup>-1</sup>) could significantly reduce the frequency of uterine smooth muscle contraction in rabbits (<italic>P</italic><0.05,<italic>P</italic><0.01), WZP (0.75,1.50,3.00 g·kg<sup>-1</sup>) could significantly reduce the contractile amplitude and activity of smooth muscle in the uterus of rats (<italic>P</italic><0.05). Results of molecular mechanisms of analgesic effects showed that the WZP (0.75,1.50,3.00 g·kg<sup>-1</sup>) significantly reduced the content of PGF<sub>2</sub><italic><sub>α</sub></italic> and the ratio of PGF<sub>2</sub><italic><sub>α</sub></italic> to PGE<sub>2</sub> in the uterine tissue of rats (<italic>P</italic><0.01). In the WZP (3.00 g·kg<sup>-1</sup>) group, the levels of <italic>β</italic>-EP in the serum of rats were significantly increased (<italic>P</italic><0.01), and the levels of OTR in uterus of rats in the WZP (1.50,3.00 g·kg<sup>-1</sup>) group were significantly decreased (<italic>P</italic><0.05). Conclusion:Pharmacological studies demonstrated potent analgesic effect of WZP, and such analgesic effect were mediated by significantly inhibiting contraction of uterine smooth muscle, decreasing the contents of PGF<sub>2</sub><italic><sub>α</sub> </italic>and ratio of PGF<sub>2</sub><italic><sub>α</sub></italic>/PGE<sub>2</sub>, reducing OTR expression in uterine as well as increasing the amount of <italic>β</italic>-EP in serum.

Article in Chinese | WPRIM | ID: wpr-873192


Objective:The SD rat model of hyperplasia of mammary gland(HMG) and the ultrahigh-performance liquid chromatography and mass spectrometry (UHPLC-LTQ-Orbitrap MS) technology were used to explore the pharmacological material basis of Shuangjin Sanjie granules (SJSJG) for the treatment on HMG.Method:SD rat models of HMG were administered in groups, and the nipple height and the diameter were measured; the levels of estradiol (E2), progesterone (P) and prolactin (PRL) in serum were detected, pathological examination was conducted for the hyperplasia of breast tissue. Histochemical methods were used to detect the expressions of estrogen receptor α (ERα), androgen receptor (AR), progesterone receptor (PR), tumor necrosis factor-α (TNF-α) proteins. Finally, UHPLC-LTQ-Orbitrap MS technology was used to detect the main chemical constituents of SJSJG, and the pharmacodynamic substance basis was analyzed based on the pharmacological effect.Result:The results of animal experiments showed that compared with the normal group, nipple height and diameter of the model group increased remarkably (P<0.01), serum E2 significantly increased (P<0.01). Pathological examination showed abnormal hyperplasia of breast tissue, expressions of ERα, AR, PR and TNF-α increased, compared with the model group, the nipple height and diameter of the SJSJG group decreased remarkably (P<0.01), serum E2 was decreased significantly (P<0.01), pathological examination showed weakened abnormal hyperplasia of breast tissue, ERα, AR, PR and TNF-α protein expressions were significant decreased (P<0.01). The results of basic material study showed that 85 chemical components were identified from SJSJG, including 16 alkaloids, 7 flavonoids, 15 terpenes, 9 phenolic acid compounds, 3 coumarin compounds, 10 esters and lactone compounds, 7 fatty acids compounds, 4 amino acids compounds, and 14 other types of ingredients, among them, alkaloids and terpenoids chemical drug substances were closely related.Conclusion:SJSJG can effectively improve the condition of breast hyperplasia, and its medicinal substance basis may include saikosaponin A, Saikosaponin D, verticinone, peimine.

Article in Chinese | WPRIM | ID: wpr-802266


Objective:To assess the anxiolytic effect of Chaimu Anshen granules (CMASG) and investigate its bioactive mechanism. Method:ICR mice were randomly divided into normal group, diazepam group(0.002 g·kg-1),Jieyu Anshen granules group(0.001 4 g·kg-1), high, medium, and low-dose (0.001 98,0.000 99,0.000 495 g·kg-1)Chaimu Anshen granule groups, with 20 mice in each group. To detect the anxiolytic effect of CMASG, mice were intragastrically administered for 4 weeks in the morning, and light-dark box transition test and open field test were performed once the other day. After the behavior tests, blood samples were collected. Six mice of each group were perfused with formalin through heart, and then the brains were fixed for immunohistochemistry test. Hippocampus of the other mice in each group were collected and stored in liquid nitrogen. The content of γ-aminobutyric acid(GABA)and glutamic acid(Glu)in hippocampus and blood samples were detected by enzyme-linked immunosorbent assay (ELISA), and the ratio of GABA/Glu was calculated. The expression of GABAα1 receptor was evaluated by the immunohistochemistry method. To test the hypnosis effect of CMASG, mice were administered intragastrically for 7 days. The sub-threshold dose of pentobarbital sodium in the sleep experiment was tested. Result:Compared with normal group, the light-dark box transitions test demonstrated that low-dose and medium-dose CMASG groups significantly prolonged the duration in light box(PPPPPPPPPPα1 receptor protein in hippocampus showed that the medium-dose CMASG significantly increased the expression of GABAα1 protein. The sub-threshold dose of pentobarbital sodium on sleep experiments confirmed that the medium-dose CMASG significantly increased the rate of sleep in mice. Conclusion:CMASG showed an anxiolytic effect, and its bioactive mechanism was related with the increase of GABA content, and the decrease of Glu content in hippocampus. Furthermore, it increased the expression of GABAα1 protein in hippocampus. The changes in content of GABA and Glu in peripheral blood were positively correlated with the changes in hippocampal tissues, which provided reference for clinical diagnosis. CMASG also exhibited an effect in improvement of sleep.