Objective:To investigate the effect of inhibition of vascular endothelial growth factor(VEGF) antisense oligodeoxynucleotides(ASODN) on human bladder carcinoma in nude mice mediated by ultrasound microbubble. Methods:The mice were randomly divided into 3 groups when transplantation tumor was established: For UM+ASODN group, mixture of microbubble and VEGF-ASODN was inject into every mice from caudal vein plus ultrasound tumor local irradiation. For UM group, microbubble was inject into very mice from caudal vein plus local irradiation with the same condition. For control group, physiological saline was inject into every mice from caudal vein.The treatment was performed every 3 days with total 5 times.The volume change of mouse subcutane tumors was observed.Evaluate the expression of VEGF and CD34 and Ki67 with immunohistochemistry dyeing and calculate the microvessel density (MVD) and cell proliferation index;TUNEL assay was used to analyse the apoptosis of tumor cells. Results:The growth speed of nude mice tumor in UM+ASODN group was obviously slower than control group; The expression of VEGF and The MVD in UM+ ASODN group was lower than control group(P

Objective:To study the inhibiting effect of VEGF antisense oligonucleotides carried by liposome on the growth of human bladder carcinoma in nude mice. Methods:The nude mice model of human bladder carcinoma was established and VEGF antisense oligonucleotides were carried by liposome to be transfected.The cell proliferation index,microvessel density (MVD) and the expression of VEGF were detected with immunohistochmistry streptavidin-biotin peroxidase(SP) method and the cell apoptosis index was determined with Tunnel technology. Results:The growth inhibitory rate in antisense experimental group and sense experimental group were 71.08% and 7.19% respectively. The differences in the cell proliferation index,apoptosis index,microvessel density(MVD) and the expression of VEGF between the antisense experimental group and the sense experimental group or the control group had significances. There was no statistical significance in the detection indexes between the sense experimental group and the control group. Conclusions:The VEGF antisense oligonucleotides can inhibit the neovascularization and the growth of bladder carcinoma in nude mice,which might be an important gene therapeutic strategy for the bladder carcinoma in future.

Objective:To investigate the effect of different depth of anesthesia monitoring in elderly cancer patients in the early postoperative cognitive dysfunction (POCD).Methods: 124 cases were received general anesthesia laparoscopic resection of colorectal cancer in elderly patients, and randomly divided into the observation group and the control group, each with 62 cases. The mean artery pressure (MAP) and heart rate of two groups of patients at different depth of anesthesia in each period were compared with the previous induction of anesthesia (t0), the organ before intubation (t1) and after intubation (t2), before pneumoperitoneum (t3) and after pneumoperitoneum (t4), after surgery (t5) and extubation (t6). The corresponding indexes were also compared between the two groups of patients. Results:In the control group, heart rate of t2, and t4~t6 increased significantly faster. The differences were statistically significant compared with the observation group (t=4.132,t=4.345,t=4.253,t=5.326;P<0.05). MAP parameters in the control group were significantly higher than that in the observation group and the differences were statistically significant (t=5.433, t=4.985,t=5.032,t=5.163;P<0.05). POCD in the observation group was significantly lower than that in the control group and the differences were statistically significant (x2=5.323,P<0.05).Conclusion: In elderly patients with laparoscopic colorectal surgery radical NTS will remain at D2 level, which can effectively reduce the incidence of POCD patients and help patients maintain stable hemodynamics. It is worth of further promoting in clinical.

Age Factors ; Environmental Exposure ; Humans ; Neoplasms ; epidemiology ; prevention & control ; Research

Biological Therapy ; Carcinoma, Neuroendocrine ; Thyroid Neoplasms ; therapy

The effects of tumor promoter TPA, MZR and PB on gap junction intercellular communication in NIH/3T3 cells were studied using the scrape-loading/dye transfer technique. All of these 3 agents were shown to cause a dose-dependent inhibition of the intercellular communication. The blockage of intercellular communication induced by TPA and MZR was inhibited in the presence of the protein kinase C inhibitor, staurosporine or palmitoyl carnitine, but not inhibited in the casexinduced by PB. The results suggest that the serape-loading/dye transfer technique may be used as a rapid screening assay to detect the tumor promoters and protein kinase C may be involved in the genesis of intercellular communication blockage induced by TPA ane MZR, but not by PB.

OBJECTIVE:To explore the teaching methods for pharmacognosy course in order to improve the quality of teach-ing. METHODS:In view of the disadvantages of the traditional teaching method,the teaching methods in pharmacognosy courses were reformed and practiced in many ways. RESULTS:Special seminar was set up,the role of teacher and student exchange was applied,traditional culture and knowledge was penetrated in class teaching,extracurricular activities were carried out and field prac-tice was added. CONCLUSIONS:Through the reform practise of the teaching method in pharmacognostic courses in pharmacy ma-jor in our university,the initiative and enthusiasm of students' learning has been improved,the ability of professional knowledge has been expanded,innovation and practical ability have been actively cultivated and good teaching effected has achieved. The quali-ty of the teaching in pharmacognosy has been greatly improved.

The phagocytic ability and fashion of two types of alveolar macrophages (AM) on coal dust were studied by differential interference contrast microscope, scanning electron microscope and image analyser. This study revealed the phagocytic ability of spherical AM on dust was higher than that of the flat AM. Both types of AM could extend long tenuous filopodia to the coal dusts around the cells. The coal dusts were attached to the cell surface and then were sunk into the macrophage. The amount of the phagocyted coal dusts per unit time were measured by image analytical method which is more exact than other methods. This paper provided not only a new approach for study phagocytosis of macrophage on inorganic dusts, but also some essential morphologic evidences for study of pneumoconiosis.

Objective To investigate the protective effect of 17?-estradiol (?E2) on cultured retinal neurons. Methods By using methods of the cultured retinal neurons, the effects of H 2O 2, ? E2, and tamoxifen, the estrogen receptor antagonist, on the cultured retinal neurons were observed. Results H 2O 2 significantly decreased cell viability in cultured retinal neurons in a dose- and time-dependent manner. When the retinal neurons were pretreated with ? E2 30 min prior to H 2O 2 treatment, cell viability was significantly increased (P

Objective To observe the variations of the functional states of T helper cells(Th) in peripheral blood of children with mycoplasma pneumoniae pneumonia(MPP) in acute phase,and to explore their roles in the pathogenesis of MPP.Methods Peripheral blood mononuclear cells(PBMC) of 40 MPP children were stimulated with PMA and ionomycin and cultured in vitro for 48 hours.The levels of IL-4,IFN-?,and TGF-?1 in the supernatants of PBMC were detected by ELISA.Results The levels of IFN-? and the ratio of IFN-?/IL-4 of MPP children in acute phase were significantly lower than those of the controls(P0.05).Conclusions The function of Th2 relatively prevails over Th1 in MPP children.The protective or regulative function of Th3 in vivo increases,but the protective regulation of TGF-?1 is insufficient,so the imbalance of Th1/Th2 can not be corrected.The variation of the functional states of T helper cells in acute phase has no relationship with or without the extrapulmonary damage.