Objective To study the apoptosis-inducing effect of histamin-indomethacin（his-IN）on Lewis lung cancer cell in mice.Methods The suspension of tumor cells from Lewis lung cancer mice was inoculated into the left axilla of Kunming mice.When the tumor grew to 1 cm in diameter,the mice were divided into 5 groups and received corresponding treatment：3.0 mg/kg indomethacin（IN）group,3.5 mg/kg IN group,3.0 mg/kg his-IN group,3.5 mg/kg his-IN group,and saline control group.Ten days later,the therapeutic effects were evaluated by the tumor inhibitory rate,the apoptotic peak and rate of tumor cells were measured by flow-cytometry（FCM）,and tumor necrosis factor α（TNF-α）level was estimated by radio-immunity method.Results TNF-α level,the tumor inhibitory rate and the apoptosis rate of his-IN group and IN group were significantly higher than those of the control group,and those of 3.5 mg/kg his-IN group was the highest.In the groups of his-IN or IN treatment,an apoptotic peak was found before G0/G1 phase,and the peak in his-IN group appeared earlier than IN group.Conclusion IN and his-IN could resist the growth of the tumor and promote cell apoptosis of Lewis lung cancer in mice.

OBJECTIVE:To optimize the extract technology of the total Favonoids from the fruits of Polygonum viviparum L.METHODS: The content of Flavonoids was computed with rutin as standard substance, and the influence of different factors and levels on the extract technology were investigated by means of simple factor experiment and orthogonal experiment. RESULTS: The optimum extraction technology was as follows: with water-bath temperature at 80℃, the ratio of liquid to solid material at 8∶1 and the concentration of ethanol at 50%, reflux extracting total Favonoids twice(1 h at each time). Under this condition, the content of total Flavonoids was 9.6%. CONCLUSION: The extraction method is appropriate, simple and feasible, and it provided theoretic basis for the production of this product.

Objective To establish luciferase-labeled mesenchymal stem cells in vitro.Methods From May,2013 to January,2014,recombinant lentiviral vectors containing luciferase gene was transfected in to mesenchymal stem cell line C3H10T1/2.Puromycin was used to filter the cells.Western-blot and immunofluorescenceimaging were used to detect the transfection efficiency.Results Western blotting analysis showed that the size of this protein in cells expressing about 60KD.Showed that infected C3H10T1/2 cells expressing luciferase protein.I mmunofluorescence,compared with the uninfected control group,virus-infected cells group of about 100％ of the cells were positive for red fluorescence.Show that had built a good stable expression of luciferase C3H10T1/2 cells.Conclusion A monoclonal cell line stably and highly expressing luciferase is obtained with luciferase-labeled mesen chymal stem cells.

Objective To study the chemical constituents of Clematis manshurica. MethodsThe extract from the roots and rhizomes of C. manshurica was subjected to chromatography on silica gel and Sephadex LH-20 column. The compounds obtained were identified on the basis of their physicochemical and spectroscopic evidences. ResultsEleven compounds were isolated and their structures were elucidated as squalene (Ⅰ), friedelin (Ⅱ), hexacosoic acid (Ⅲ), ?-sitosterol (Ⅳ), stigmasterol (Ⅴ), oleanolic acid (Ⅵ), ?-daucosterol (Ⅶ), 5-hydroxymethyl-2-furaldehyde (Ⅷ), methyl 3, 4-dihydroxy-phenyl lactate (Ⅸ), 5R-dihydro-5-hydroxymethyl-2(3H)-furanone (Ⅹ), 5R-5-hydroxymethyl-2(5H)-furanone (Ⅺ). ConclusionAll the compounds except for ?-sitosterol are isolated from the plant for the first time.

OBJECTIVE To analysis the effect of air disinfection by using nanometer light catalysis decontamination machine in operating room. METHODS By compare the effectiveness of air disinfection both by using nanometer light catalysis decontamination machine and ultraviolet rays light. RESULTS The result of tests is 0 CFU/m~2 by nanometer light catalysis decontamination machine and 33.3 CFU/m~2 by ultraviolet rays light in unmanned environment;By different groups: F=220.423,P=0.000,P

Objective:To establish an HPLC method for the determination of levofloxacin in levofloxacin hydrochloride ophthalmic in situ gel. Methods:The chromatographic column was Agilent Zorbax C18(150 mm ×4.6 mm,5μm). The mobile phase consisted of hexane sulfonic acid sodium solution-methanol(72∶28). The flow rate was 1. 0 ml·min-1. The detection wavelength was 293 nm. The chromatographic column temperature was 40℃. The injection volume was 10 μl. Results:The calibration curve was linear within the range of 0. 040 3-0. 403 0 mg·ml-1(r=1. 000 0) for levofloxacin. The average recovery was 99. 8% (RSD=1. 08%,n=9). Conclusion:The method is accurate, simple and rapid, and suitable for the content determination of levofloxacin in levofloxacin hydro-chloride ophthalmic in situ gel.

BACKGROUND: Prostate cancer stem cell is an important reason for the invasion and recurrence of prostatic carcinoma. However, separation efficiency of prostate cancer stem cells is very low.OBJECTIVE: To explore the efficient method for isolating and identifying the prostate cancer stem cells from human prostatic carcinoma cell lines PC-3 and LNCap. METHODS: Prostate cancer cell lines PC-3 and LNCap were cultured in serum free medium (SFM) and serum supplemented medium (SSM), respectively. The percentage of prostate cancer stem cells from different medium was detected by flow cytometry through markers CD133 and CD44, and the properties of prostate cancer stem cells were preliminarily identified using inducing differentiation experiments.RESULTS AND CONCLUSION: PC-3 and LNCap formed sphere cells in SFM, which can be induced into adherent cells after culture in SSM. Higher percentage of CD44+/CD133+cells was obtained from LNCap cells (1.71%; 0.73%) than PC-3 cells (0.59%; 0.32%) in both SFM and SSM. The number of CD44+/CD133+ LNCap cells was more than PC-3 using both methods (P < 0.05), but the efficiency of SFM and SSM had no statistical significance (P > 0.05). However, the culture cycle was longer and number of obtained cells was less by SFM culture, directly influencing functional determination of prostate cancer stem cells. Compared with suspension culture method with SFM, SSM is more convenient and effective in isolating prostate cancer stem cells from LNCap cells.

Objective To explore the effect of multiple low dose radiation(LDR)on the apoptosis of splenocytes and immune factors in diabetes mellitus(DM)rats.Methods The rats were randomly divided into control,DM and DM + LDR groups.The irradiation doses were 25,50 and 75 mGy,and the irradiated times were 15.At the fourth weekend after the DM rats irradiated,the apoptotie rate and TCRαβ percentage of splenoeytes were detected by flow cytometry,and the content of IL-2 in both serum and supernatant of cultured splenocytes were detected by ELISA.Results Compared with that in the control,the body weight(BW)decreased in the DM and DM + LDR groups,particularly in DM group.The blood glucose(BG)level in the DM + LDR groups was higher than that in the control,but decreased significantly as compared with that in the DM group(P < 0.01).As compared with those in the control,the apoptotic rate in DM + 50 mGy(P < 0.05)and the content of serum IL-2 in DM + 75 mGy group(P < 0.01)all increased significantly,while the content of IL-2 in supernatant of cultured splenocytes decreased significantly in the DM + LDR groups.Compared with those in the DM group,the apoptotic rate and the percentage of TCRαβ in splenocytes in the DM + LDR groups(P < 0.01-P < 0.001)and the content of IL-2 in serum in DM + 50 mGy group(P < 0.01)decreased significantly.Conclusions The multiple LDR could weaken the loss of BW and increase of BG caused by DM,decrease the splenocyte apoptosis induced by DM,and regulate the immune factors.

Objective To explore the methods for endoscopy nasal microsurgery and multiple techniques in treatment of nasopharyngeal angiofibromas. Methods CT, MRI and digial substraction angiography (DSA) and endoscopic examination had been used. ALL 12 patients accepted preoperative feeding artery embolum, hypotention anesthesia and injected adrenaline-lidocaine. Microelectrotomy-electrocoagulation had been used to remove tumor. Results All patients were treated by endoscopic nasal surgery. No complications had occurred. No recurrence were found in follow-up period. Conclusion The important factors to reduce amount of introperative bleeding are to select proper operative patients and use multiple techniques. Endoscopy nasal surgery has dominance in reducing complications, wound, tumor recurrence, operative time and nasal function.

Objective:To analyze the expression of MUC15 and PI3K/Akt in gastric carcinoma and its association with clinicopathologi-cal characteristics and prognosis. Methods:The expression of MUC15 and Akt was detected in 144 cases of gastric carcinoma tissues and corresponding para-carcinoma tissues by tissue microarray and immunohistochemistry. Results:The positive expression rate of MUC15 in gastric carcinoma was 79.8%, higher than that of para-carcinoma tissues (22.2%, P<0.01). The positive expression rate of Akt protein in gastric carcinoma was 80.6%, higher than that of para-carcinoma tissues (16.7%, P<0.01). The expression of MUC15 and Akt was statistically associated with the grades of differentiation, invasion depth, lymphatic metastasis, TNM stage of tumor tissues (P<0.05), and the positive correlation between the two protein expression that appear in the gastric tumor tissue (P=0.001). Univariate survival analysis showed that the over-expression of either MUC15 or Akt was inversely correlated with the survival time (P<0.05 and P<0.01, respectively). Cox multiple regression analysis indicated that patients with over-expression of both MUC15 and Akt had the worst prognoses (HR=3.115, P<0.05). Conclusion:MUC15 may be involved in the occurrence, development, invasion, and metastasis of gastric cancer through the PI3K/Akt cell signaling pathway, and the expression of MUC15 combined with Akt is a powerful predictor for the prognosis of gastric cancer.