ABSTRACT
Mechanisms for Panax ginseng's cardioprotective effect against ischemia reperfusion injury involve the estrogen-mediated pathway, but little is known about the role of androgen. A standardized Panax ginseng extract (RSE) was orally given with or without flutamide in a left anterior descending coronary artery ligation rat model. Infarct size, CK and LDH activities were measured. Time-related changes of NO, PI3K/Akt/eNOS signaling, and testosterone concentration were also investigated. RSE (80 mg/kg) significantly inhibited myocardial infarction and CK and LDH activities, while coadministration of flutamide abolished this effect of RSE. NO was increased by RSE and reached a peak after 15 min of ischemia; however, flutamide cotreatment suppressed this elevation. Western blot analysis showed that RSE significantly reversed the decreases of expression and activation of PI3K, Akt, and eNOS evoked by ischemia, whereas flutamide attenuated the effects of these protective mechanisms induced by RSE. RSE completely reversed the dropping of endogenous testosterone level induced by I/R injury. Flutamide plus RSE treatment not only abolished RSE's effect but also produced a dramatic change on endogenous testosterone level after pretreatment and ischemia. Our results for the first time indicate that blocking androgen receptor abolishes the ability of Panax ginseng to protect the heart from myocardial I/R injury.
ABSTRACT
This study was aimed to investigate the blood-enriching effect of processed Radix Polygoni Multiflori on blood deficiency rats. A total of 140 SD rats were randomly divided into 14 groups, which were the blank control group, blood deficiency model group, positive control group and 11 test groups. The blank control group and model control group were treated with distilled water and the positive control group was given X ue b ao Buxue soluble granules. The test groups were treated with 11 different kinds of processed Radix Polygoni Multiflori sam-ples at a dosage of 2 g?kg-1 respectively. All rats were given drugs once a day. After 10 days, blood samples were collected and the amount of red blood cell (RBC), hemoglobin (Hb), haematocrit (HCT), whole blood viscos-ity and plasma viscosity, prothrombin time were estimated. The results showed that 9 processed Radix Polygoni Multiflori groups can increase the number of RBC and Hb significantly ( P < 0 . 05 or P < 0 . 01 ) in blood deficien-cy rat models. They were the sample processed with decoction of black soybean (DBS) for 24 h, with wine and DBS combination for 24 h , steamed for 4 h and 8 h under high pressure , with DBS for 6 h and 8 h , with wine for 6 h, with wine and DBS combination under high pressure, respectively. The samples processed with DBS un-der high pressure for 8 h increased RBC and Hb were more obviously ( P < 0 . 01 ) . The 8 groups can improve the situation of functional disorder of blood rheology significantly ( P < 0 . 05 or P < 0 . 01 ) . They were the unprocessed samples, processed with DBS and wine for 24 h respectively, with DBS and wine combination for 24 h, steamed for 4 h and 8 h or steamed with DBS for 6 h and 8 h or with wine for 6 h under high pressure respectively. It was concluded that the blood-enriching effect was improved while the R adix Polygoni Multiflori was processed with DBS or wine and under high pressure for 6-8 h .
ABSTRACT
Objective To observe the difference between Radix AstragaLi(RA) and Radix Fici Hirtae(RFH) in immune regulation and improvement of anaemia.Methods Fatigue resistance,brain hypoxia and normal hypoxia tolerance were observed to measure the anti-stress function.Bloodletting-induced anemia model and cyclophosphamid-induced anemia model were used to observe the effect of blood enrichment.Phagocytic function of macrophage,serum hemolysin level and delayed type hypersensitivity(DTH) reaction were also detected.Results RA and RFH could improve the fatigue resistance,normal hypoxia tolerance and brain hypoxia tolerance,and increase the red blood cell count and hemoglobin content,enhance phagocytic function of macrophage and serum hemolysin level,and increase the DTH reaction.Conclusion Both RA and RFH have an effect on improving anti-stress ability,immune function and blood enrichment,and there are no significant difference between RA and RFH.
ABSTRACT
AIM: To establish a method for determination of volatile components(? pinene、? pinene、camphor、menthol、isoborneol、borneol、cinnamaldehyde、paeonol and laurocapram)in Liangmiao Honghua Ointment (Radix Zanthoxyli, Flos Carthami, Radix Notoginseng, paeonol, etc.). METHODS: Nine volatile components were isolated and determined on ZB WAX capillary column(30 m?0.25 mm?0.25 ?m) by GC. The column temperature was raised by program, 50 ℃(3 min)→30 ℃?min -1 →120 ℃(5 min)→10 ℃?min -1 →150 ℃ (1 min)→60 ℃?min -1 →230 ℃(12 min). Split stream sampling was applied,split ratio was 20∶1; injection port temperature was 210 ℃; detector: FID, temperature at 250 ℃. RESULTS: The nine volatile components were isolated well. The linearities were fine with the recoveries of 97%-100%, respectively. CONCLUSION: The method is convenient,rapid and accurate.It can be used to control the quality of Liangmian Honghua Ointment.
