Currently, the model of the research evaluation system of traditional Chinese medicine (TCM) is set up through imitating that of western medicine. The application of quantitative research to TCM does promote the advance of modernization of TCM, which explore the part of TCM that can be measured in quantitative method. However, TCM has a background of profound philosophy and culture. The priority of TCM can not be expressed through quantitative research alone. On the contrary, qualitative research is more suitable to most research area of TCM. In TCM clinical research, the priority of TCM should be fully explored. It is very significant to set up the effectiveness evaluation system of TCM, especially by applying qualitative research to the diagnosis and the evaluation of treatment results and combining quantitative research.

The preparation method, serum stability, efficiency of cellular uptake and apoptosis induction of the cell penetrating peptide TAT and cleavable PEG co-modified liposomes loaded with paclitaxel (C-TAT-Lipo) were investigated. The best preparation procedure was performed by orthogonal test based on single factor screening method. First, the paclitaxel (PTX)-loaded liposomes were prepared by filming-rehydration method, evaluated with entrapment efficiency and polydispersity index. The morphology of C-TAT-Lipo was characterized by transmission electron microscopy. Turbidity variations were monitored in the presence of fetal bovine serum (FBS) to evaluate the serum stability of the liposomes developed here. Next, the efficiency of cellular uptake of different Rho-PE-labeled liposomes on B16F1 cells in vitro was evaluated by confocal laser scanning microscopy (CLSM) and flow cytometry. The quantitative analysis of apoptosis induced by different PTX-loaded liposomes was performed by Annexin V-FITC/PI double staining. The optimal formulation was as follows: Chol : lipid: 1 : 8 (molar ratio); drug : lipid: 1 : 40 (mass ratio); lipid concentration: 3 mmol x L(-1); temperature of hydration: 25 degrees C. The mean size and polydispersity index of C-TAT-Lipo were about (97.97 +/- 3.68) nm and 0.196 +/- 0.037, the zeta potential was (-0.89 +/- 0.45) mV, the entrapment efficiency of paclitaxel was (90.16 +/- 1.53)%. The particle sizes did not exhibit significant variations in 50% FBS over 24 h at 37 degrees C. The efficiency of cellular uptake of the C-TAT-Lipo increased 1.40 fold following the cleavage of PEG. Apoptosis analysis showed 59.3% increase of the apoptosis and necrosis profile of C-TAT-Lipo after the detachment of PEG shells, which was markedly higher than that of N-TAT-LP with or without glutathione and SL, respectively. The results indicate that the C-TAT-Lipo is successfully prepared by filming-rehydration method and shows significant antitumor activities.
Animals ; Annexin A5 ; Apoptosis ; Cell Line, Tumor ; Cell-Penetrating Peptides ; pharmacology ; Fluorescein-5-isothiocyanate ; analogs & derivatives ; Liposomes ; chemistry ; Melanoma, Experimental ; Mice ; Microscopy, Confocal ; Paclitaxel ; pharmacology ; Particle Size ; Polyethylene Glycols ; chemistry

Objective:To analyze the occurrence information and clinical manifestations of adverse reactions caused by quinolones antimicrobial drugs in Beijing Hospital and to provide the basis for clinical use.Method:In a retrospective study,128 cases of adverse reactions caused by quinolones antimicrobial drugs from 2003 to 2007 in Beijing Hospital were statistically analyzed in respect of drug categories,genders,ages,routes of administration,organs or systems, clinical manifestations,etc.Result:The drugs causing adverse drug reactions included seven categories.Levofloxacin showed the highest propotion,and intravenous drip was the main route of administration,and damages of skin were the most common manifestation.Conclusion:Adverse reactions monitoring of anti-infective agents should be strengthened to ensure the rational and safe patient medication.

The preparation method, serum stability, efficiency of cellular uptake and apoptosis induction of the cell penetrating peptide TAT and cleavable PEG co-modified liposomes loaded with paclitaxel (C-TAT-Lipo) were investigated. The best preparation procedure was performed by orthogonal test based on single factor screening method. First, the paclitaxel (PTX)-loaded liposomes were prepared by filming-rehydration method, evaluated with entrapment efficiency and polydispersity index. The morphology of C-TAT-Lipo was characterized by transmission electron microscopy. Turbidity variations were monitored in the presence of fetal bovine serum (FBS) to evaluate the serum stability of the liposomes developed here. Next, the efficiency of cellular uptake of different Rho-PE-labeled liposomes on B16F1 cells in vitro was evaluated by confocal laser scanning microscopy (CLSM) and flow cytometry. The quantitative analysis of apoptosis induced by different PTX-loaded liposomes was performed by Annexin V-FITC/PI double staining. The optimal formulation was as follows: Chol : lipid: 1 : 8 (molar ratio); drug : lipid: 1 : 40 (mass ratio); lipid concentration: 3 mmol x L(-1); temperature of hydration: 25 degrees C. The mean size and polydispersity index of C-TAT-Lipo were about (97.97 +/- 3.68) nm and 0.196 +/- 0.037, the zeta potential was (-0.89 +/- 0.45) mV, the entrapment efficiency of paclitaxel was (90.16 +/- 1.53)%. The particle sizes did not exhibit significant variations in 50% FBS over 24 h at 37 degrees C. The efficiency of cellular uptake of the C-TAT-Lipo increased 1.40 fold following the cleavage of PEG. Apoptosis analysis showed 59.3% increase of the apoptosis and necrosis profile of C-TAT-Lipo after the detachment of PEG shells, which was markedly higher than that of N-TAT-LP with or without glutathione and SL, respectively. The results indicate that the C-TAT-Lipo is successfully prepared by filming-rehydration method and shows significant antitumor activities.

Objective: To investigate the relationship between the c-Jun N-terminal kinase (JNK) pathway and lung-resistance protein (LRP). Methods:A549 cells were treated with various concentrations of CDDP for 72 h. The LRP mRNA expression was then analyzed using reverse transcription PCR (RT-PCR). LRP, JNK, and P-JNK were analyzed by Western blotting. The A549 cells were then pretreated with SP600125 (2 μg/ml to 4 μg/ml ) for 1 h. Afterward, CDDP (16 μg/ml) was added into the culture for 72 h. A Cell Counting Kit-8 was used to investigate the sensitivity of CDDP to the A549 cells. Flow cytometry was used to detect the apoptosis rate. The LRP mRNA expression was analyzed using RT-PCR. LRP, JNK, and P-JNK were analyzed by Western blotting. Results:CDDP in-duced the mRNA and protein expression of both LRP and P-JNK in a dose-dependent manner. Pretreatment with SP600125 enhanced the sensitivity of CDDP to the A549 cells and increased the apoptosis rate. However, the LRP mRNA and LRP expression in the pre-treated cells was lower than that in the presence of CDDP alone. Conclusion:In A549 cells, CDDP induces the LRP expression via the JNK pathway. This result suggests that lung cancer therapy can be improved by the addition of CDDP to inhibit the JNK signaling path-way.

Objective: To investigate VEGF expression in NIH3T3 cells infected by adenovirus containing hVEGF165 gene and its influence on proliferation of NIH3T3 cells, and to observe the expression of hVEGF and its angiogenic effect in vivo. Methods: Adenoviral vector containing hVEGF165 gene was constructed and was used to infect NIH3T3 cells. The infection efficiency of adenovirus vector was examined by immunofluorescence and flow cytometry. Expression of VEGF in NIH3T3 cells and its levels in the culture medium were examined by immunohistochemical (IHC) staining, RT-PCR, and ELISA. The infected NIH3T3 cells were implanted in skin defect at rat back and the acellular dermis on the wound was obtained one week later; the expression of hVEGF was detected by IHC in the dermis and the density of vessels was determined under microscope. Results: NIH3T3 cells were effectively transfected by adenovirus containing VEGF gene in vitro, the transfection efficiency was in a dose-effect manner with multiplicities of infection (MOI) of the adenovirus. When MOI was 100, the infection efficiency was more than 95%. The expression of VEGF mRNA and protein was detected by RT-PCR and IHC 24 h after transfection. ELISA result showed that the high level of VEGF on the 3rd day after transfection and the level reached its peak 7 d after infection (1 052 pg/ml); VEGF expression was detectable 13 d after transfection. MTT assay demonstrated no significant difference in cellular proliferation between the transfection and non transfection group. Expression of hVEGF was also detected in vivo in mice, and the density of vessels in the experimental group was significantly higher than that in the control group (P<0.01). Conclusion: Adenoviral vector can effectively transfect VEGF gene into NIH3T3 cells; VEGF gene can be detected in vitro and in vivo; and it can promote neovascularization in the transplanted tissues.

Objective: To prepare NIH3T3 cells harboring microencapsulated VEGF gene and investigate the proliferation, activity and metabolic function of the modified cells. Methods: Microencapsulated VEGF modified NIH3T3 cells were prepared through an alginate-BaCl2 process. Morphological appearance of the microencapsulation and the cell morphology were observed under inverted phase microscope; untreated NIH3T3 cells served as control. The concentrations of VEGF in the culture supernatant (collected every 48 hours) were measured by ELISA; the proliferation and vitality of the cells were examined by MTT assay and flow cytometry with PI staining. Results: The microcapsules were round in shape and the cells grew well. There was no significant difference in the concentrations of VEGF,MTT values and vitalities of cells between the 2 groups. Conclusion: The growth and metabolic functions of NIH3T3 cells are not influenced by microencapsulated NIH3T3 cells harboring VEGF gene. The bio-properties of modified cells are similar to those of the control cells,which lays a foundation for transplantation of microencapsulated VEGF modified NIH3T3 cells in vivo.

AlM:To investigate the myopia risk factors of different nationalities students in primary and secondary schools in Karamay City.
METHODS:This survey was a cross-sectional design, the sample was selected in the first, third and sixth grade primary school and middle school students by stratified random cluster method. The survey team comprised of ophthalmologists, technicians, optometrists and administrative staff. The staff was trained about the design, method and quality control, etc. According to the research needs, questionnaires were designed. ln person interview, pilot study, questionnaire, intraocular pressure, corneal curvature, refraction, axial length, corneal thickness, slit lamp microscopy and fundus examination were performed. A database was established using the Epi-data software by double entry method. All statistical analysis was completed by SPSS 17. 0 software.
RESULTS:The survey covers 1 922 students in total, which account for 91. 4% students of the whole four grades. The total prevalence of myopia was 39. 2%. Multivariate analyses revealed that ethnic origin, age, gender, parents of short-sightedness, daily after-school reading and writing time and bad reading and writing habits were closely related to myopia ( OR=0. 149, 95%CI:0. 103-0. 216, P=0. 000; OR=1. 372, 95%CI: 1. 296-1. 453, P=0. 000; OR=1. 517, 95%CI: 1. 200-1. 918, P=0. 000;OR=0. 695, 95%CI: 0. 602-0. 804, P=0. 000; OR=1. 310, 95%CI:1. 086-1. 581, P=0. 005;OR=0. 655, 95%CI:0. 486-0. 882, P=0. 005).
CONCLUSlON: Ethnic origin, age, gender, parents of short - sightedness, daily after - school reading and writing time and reading and writing habits were independent risk factors for myopia.

Selenium, a metalloid mineral micronutrient,is an essential component for the adequate and healthy life of human, animals, and some other microorganisms.Selenium has antioxidative and oxidative effects on living organisms.Selenium deficiency has been associated with impaired function of the immune system.Selenium deficiency appears to enhance the virulence or progression of some viral infections.Selenium deficiency results in decreased activity of glutathione peroxidase, increasing oxidative damage and the likelihood of mutations in the viral genome.The safe range of selenium intake is relatively small and excess selenium intake can readily result in toxicity.This review summarizes the updates of benefitial and adverse effects of selenium on health.