To study the effect and mechanisms of 18 α-glycyrrhizic acid (18 α-GA) on cytochrome P450 (CYP) enzymes, the expression of CYP1A1, CYP2E1 and CYP3A was determined in rat hepatocyte sandwich cultures by using enzyme assay and semi-quantitative reverse transcriptase-polymerase chain reaction(RT-PCR). The results showed that the activities of CYP1A1 (7-ethoxyresorufin O-deethylase, EROD), CYP2E1(aniline hydroxylase, ANH) and CYP3A (erythromycin N-demethylase, ERD) were decreased in concentration-dependent manner after treatment with 18 α-GA(50－400 mg*L-1), and at the concentration of 200 mg*L-1 inhibitory rate reached the maximum (the maximum inhibitory rate was 59.6%, 69.7% and 44.7%, respectively). The time course revealed that the inhibition reached plateau level at d 4 of culure. 18 α-GA Decreased CYP1A1, CYP2E1 and CYP3A1 mRNA expression in dose-dependent manner, the maximum inhibitory rate was 44.5% , 58.1% and 37.1%, respectively. The results suggest that 18 α-GA down-regulate CYP expression at the transcriptive levels.

AIM: To analyze the chemical composition and their relative contents of Fuyinjie Compound Huangsong Lotion. METHODS: A capillary column HP-5 MS was used. The column temperature was controlled by a program and the MS analysis was performed with EI and quadrupole mass analyzer. The chemical composition was identified by NIST98 searching and mass spectra comparing, and their relative contents were determined by using normalization method of chromatographic peak areas. RESULTS: There were 39 components found and 31 composed of more than 90% separated components were identified. CONCLUSION: The GC-MS is a simple, rapid and sensitive method for the chemical composition analysis of Fuyinjie Compound Huangsong Lotion.

Objective To investigate the therapeutic effect of percutaneous laser disc decompression on lumbar discogenic pain.Methods56 patients with lumbar discogenic pain were treated with percutaneous laser disc decompression with Nd:YAG laser(wavelength 1064 nm).They were followed up for more than 3 months with Macnab criteria.ResultsAll the patients were followed up.At the end point of postoperative 3 months,32 patients had an excellent outcome,20 were good,3 patients were fair,1 patient were poor.No complication(infection and nerve injury)had been observed.ConclusionPercutaneous laser disc decompression is a safe,little invasive and effective treatment modality for lumbar discogenic pain.

AIM　To study the effect of 18α-glycyrrhizic acid (18α-GL) on hepatic microsomal drug metabolizing enzymes in rats. METHODS　18α-GL (12.5, 50.0 mg*kg-1*d-1) were given ip to male Wistar rats for 3, 6 or 12 consecutive days. The rats were sacrificed 24 h after the last dose and the liver microsomes were prepared for analysis of cytochrome P450 (CYP) isozymes and phase II transferase activites. RESULTS Aniline hydroxylase (CYP2E1) activities in the rats treated with 18α-GL (12.5, 50.0 mg*kg-1) for 6 days decreased dose-dependently by up to 53.2%; For 3, 6 or 12 days 7-ethoxyresorufin O-deethylase (CYP1A1) activities in the rats of 50 mg*kg-1 dose group decreased time-dependently by 17.6%, 38.3% and 47.3%, respectively; Erythromycin N-demethylase (CYP3A) activities was significantly inhibited from 23.1% to 34.3%. UDP-glucuronosyltransferase activities toward 7-hydroxy-4-methylcoumarin significantly increased ranging from 19.3% to 29.9%. UDP-glucuronosyltransferase activities toward 4-phenylphenol in the rats treated with 18α-GL (12.5, 50.0 mg*kg-1) for 6 days increased by 45.9% and 70.3%. Glutathione S-transferase (GST) activities in the rats treated with 18α-GL (12.5，50.0 mg*kg-1) for 6 days increased by 13.7% and 48.3% in dose-dependent manner. CONCLUSION　18α-GL inhibited rat liver microsomal cytochrome P450 while induced phase II transferase.

Objective:To compare the effects between electroacupuncture (EA) at Chize (LU 5, the He-Sea point of the Lung Meridian) and Shangjuxu (ST 37, the lower He-Sea point of the large intestine) in rats with ulcerative colitis (UC) on the variations of mesenteric microcirculation and vasoactive intestinal peptide (VIP) in the colon, lung, and hypothalamus. The relative specificity of acupoints was also explored.
Methods: A total of 28 male Wistar rats were randomized into a normal group, a model group, a Chize (LU 5) group and a Shangjuxu (ST 37) group, 7 rats in each group. The UC model was established by enema with acetic acid. Since the third day after modeling, rats in the Chize (LU 5) group and Shangjuxu (ST 37) group respectively received EA at Chize (LU 5) and Shangjuxu (ST 37), 15 min each time for successive 7 d. The variations of mesenteric microvascular calibers and blood flow status were observed by a microcirculation microscopic tester; VIP in the colon, lung and hypothalamus was measured by radioimmunoassay.
Results:Compared with the normal group, the mesenteric microvascular calibers were significantly expanded in the model group (P<0.05); there was no significant difference between the model group and Chize (LU 5) group (P>0.05); compared with the model group and Chize (LU 5) group, the calibers were obviously shrunk in Shangjuxu (ST 37) group (P<0.05). The four groups showed no significant inter-group differences in comparing blood flow status (P>0.05). The colonic VIP levels in the model group and Chize (LU 5) group were significantly higher than that in the normal group (P<0.01,P<0.05); the VIP level in Shangjuxu (ST 37) group was markedly lower than that in the model group (P<0.01). There were no significant differences among the four groups in comparing VIP level in lung and hypothalamus (P>0.05).
Conclusion:The effects of Chize (LU 5) and Shangjuxu (ST 37) were different in treating UC. Shangjuxu (ST 37) showed a more significant efficacy in down-regulating VIP in the colon and regulating mesenteric microcirculation, while the effects of Chize (LU 5) were not obvious.

In order to investigate if there exists interaction between mitogen-activated protein kinase (MAPK) and signal transducer and activator of transcription 3 (STAT3) protein, and how the interaction regulates tumor necrosis factor-? (TNF-?) transcription activity, the human p38 and extracellular-signal regulated protein kinase 2 (ERK2) genes were amplified from human flag-p38 and flag-ERK2 by polymerase chain reaction (PCR) and cloned into pcDNA3-HA. Protein expression of the plasmids was examined by Western blotting. Co-immunoprecipitation was used to identify if there exists interaction between MAPK and STAT3 proteins. If the interaction was approved to be true, report gene system was applied to find how the interaction affect transcriptional expression of TNF-?. After STAT3 pathway was inhibited by RNA interfering, the action on TNF-? activity was determined. The results of DNA sequencing and enzyme digestion showed that the cloned p38 and ERK2 genes were correct, to be 1 080 bp or so. p38 and ERK2 proteins were expressed in 293T cell to be approximately 40 ku. Co-immunoprecipitation data showed that p38 and ERK2 proteins integrated with STAT3 protein in vivo. TNF-? reporter gene activity results found that protein complex of p38-STAT3 and ERK2-STAT3 coordinately increased TNF-? activity. After STAT3 was interfered, the TNF-? activity markedly decreased. These data indicated that there exists interaction between p38 and STAT3 protein, ERK2 and STAT3 protein. The complex of the proteins can coordinately regulate TNF-? expression. After interfereing STAT3 pathway, the coordinated action on TNF-? transcription activity might be obviously reduced.

Objective To construct estrogen receptor α (ERα)trans-activation system. Methods The full length ERα and its different function regions [ ( transcriptional activation function 1 ( AF1 ), DNA inding domain ( DBD), and transcriptional activation function 2 ( AF2 ) ] were amplified from pcDNA3 -ERα by PCR and cloned into the pGAL vector. The expressions of the recombinant plasmids constructed were detected via immunoblotting. The 293T cells transfected with recombinant plasmids of full length ERα, its different function regions and empty vector were divided into 5 groups; each group was divided into 2 parts which were treated with or without estrogen (E2). The transcriptional activity of each group was detected in 293T cells after the recombinant plasmid was co-transfected with 0. 2 μg of estrogen receptor element luciferase(ERE-LUC) and 0. 1 μg of plasmid expressing β-galactosidase and treated with or without 10 nmol/L E2 for 24 hours. Results The full length ERα and its different function regions were expressed in the 293T cells. Compared with the empty pGAL vector, the transcription activities of full length ERα, AF1, AF2 and DBD recombinant plasmids were raised about 20. 44±1.01, 2. 09±0. 11, 8. 09±0. 30 and 1.05±0. 09 fold, respectively, with the induction of E2 after transfection in the 293T colls. Conclusion The trans-activation system of ERα has been successfully established.

A total of 192 poststroke patients with depression and anxiety were assigned randomly into study group (n =96) and control group (n =96).The study group received both capsules Shugan-jieyu and paroxetine while the control group paroxetine alone.Compared with the control group,scores of both Hamilton depression scale (HAMD) and Hamilton anxiety scale (HAMA) were significantly different at the end of week 2 and 6 in the study group (P ＜ 0.05).The HAMD and HAMA deduction rate and the scores of mangled extremity severity,mini-mental state examination and modified Barthel index at the end of week 6 of the study group were better than those of the control group (all P ＜ 0.05).The combined use of capsules Shugan-jieyu and paroxetine could improve symptoms of depression and anxiety,offer a higher safety and accelerate the rehabilitation of extremity function.

OBJECTIVE： To compare the quality of ceftazidime for injection among the domestic and imported products METHODS： The ceftazidime was observed and determined with respect to the property， color and clarity of the solution， insoluble particle， content of pyridine， polymer of ceftazidime and marked content of ceftazidime RESULTS： There were some differences in above－ mentioned parameters among products of different factories， however， the parameters were within the range of standard CONCLUSION： The quality of domestic products is reliable and comparable to that of imported ones

Objective:To express and purify a new fusion protein(RGD/tTF) for targeting therapy of cancer, and analyze its activities.Methods:The fused gene RGD/tTF was constructed by PCR, and then was inserted into vector pET22 b(+),expressed in E.coli BL21(DE3).The fusion protein was purified through Nickel-affinity chromatography column. The tTF activity of the fusion protein was analyzed by clotting assay and FⅩ activation assay. The specific binding of RGD/tTF to ?_v?_3 was analyzed by indirect ELISA.Results:The recombinant plasmid pET22 b(+)/RGD/tTF with correct sequence was obtained. The fusion protein was expressed with high yield in E.coli BL21(DE3). The purified fusion protein could activiate FⅩ and cause blood coagulation, and bind to ?_v?_3 specifically.Conclusion:The recombinant plasmid pET22 b(+)/RGD/tTF was constructed.The fusion protein retained TF activity and binding specificity to ?_v?_3, lays the foundation for studying the function of inducing thrombosis in tumor vasculature in vivo.