Epilepsy induced by intracerebroventricular injection of kainic acid in the rat could be attenuated by electroacupuncture(EA)at the "Du Mo point" since EA resulted in a reduction of the frequency and amplitude of the hippocampal EEG especially in the 1st min after EA.No unsynchronization of the hippocampal EEG occurred before or after EA.The hippocampal unit discharges after intracerebroventricular injection of kainic acid were classified into positive units,negative units and indifferent units,The positive units were inhibited by EA while the negative units,on the contrary,were activated.The positive units(21%)and the indifferent units(33%)were converted into negative units by EA.At the same time,EA reduced the NSEB value and IBSF value of hippocampal epileptic burst discharges.On the basis of these findings,it is believed that the inhibition of the amplitude of hippocampal epileptic EEG by EA plays an important role of the antiepileptic action of EA,hippocampal negative units are one of the factors of antiepileptic action,and EA can regulate the intrinsic characteristics of epileptic neurones.

Objective To systematically review the efficacy and safety of mycophenolate mofetil versus cyclophosphamide in adults with refractory nephrotic syndrome. Methods The randomized controlled trials of mycophenolate mofetil and cyclophosphamide treatment for refractory nephrotic syndrome were searched from Cochrane library, PubMed, Embase, Wanfang, VIP and CNKI till March 2014. The relevant studies were screened according to inclusion criteria and exclusion criteria. The quality of the included studies was evaluated. Meta-analyses were performed by using RevMan 5.2 software. The indexes were analyzed including the complete remission rate, efficiency, serum albumin, and adverse reaction after completing the treatment for adults with refractory nephrotic syndrome. Results There were 9 RCTs, a total of 467 patients were enrolled. The result of the meta-analysis showed that mycophenolate mofetil could significantly increase complete remission rate (RR=1.45, 95%CI=1.17～1.81, P=0.000 7) and efficiency rate (RR=1.23, 95%CI=1.11～1.36, P＜0.000 1). It can also enhance the level of serum albumin (WMD=2.73, 95%CI=1.42～4.04, P＜0.000 1) and decrease 24-hour urinary protein (SMD=-0.63, 95%CI=-1.16～-0.10, P=0.02) compared with cyclophosphamide in the treatment of refractory nephrotic syndrome. There was no significant difference in the serum level of cholesterol between mycophenolate mofetil group and cyclophosphamide group (SMD=0.31, 95%CI=-0.23～0.84, P=0.26 ). The incidence rates of liver dysfunction (RR=0.13,95%CI=0.06～0.28, P＜0.000 01), leukopenia (RR=0.10, 95%CI=0.04～0.23, P＜0.000 01), gastrointestinal reaction (RR=0.21, 95%CI=0.11～0.39, P＜0.000 01) and alopecia (RR=0.08, 95%CI=0.02～0.29, P＜0.000 01) were significantly lower in mycophenolate mofetil group than those of cyclophosphamide group. There were no significant differences in respiratory tract infection rate (RR=0.68, 95%CI=0.41～1.14, P=0.14) and lung infection rate (RR=0.58, 95%CI=0.31～1.08, P=0.09) between the two groups. Conclusion The safety and efficacy are better in the treatment of refractory nephrotic syndrome using mycophenolate mofetil than that of cyclophosphamide.

AIM: To investigate the possibility of transfecting siRNA into rabbit cervical cells in transformation zone by the method of solid phase in vivo and to verify the effectivity of siRNA transfection by modifying the permeability of the cervical epithelium. METHODS: A sense strand small-interference RNA (siRNA) for human papillomavirus type 16 (21 bp) was designed and labeled with Cy3. siRNA-Lipo2000-carbomer gum was prepared. Twelve rabbits were included in the study and divided into experimental group and control group. In order to modify the permeability of cervical epithelium, hypertonic saline solution at concentration of 200 mmol/L was used to infuse the cervix in the experimental rabbits for 10 min, and normal saline was used for the control animals. The siRNA-Lipo2000-carbomer gum was applied to the surface of the rabbit cervix. Twenty-four hours later, the rabbits were sacrificed, and the cervix was isolated, cut into 2 parts, one part was for rapid frozen sectioning and the efficiency of transfection was observed under fluorescence microscope, another part was prepared by paraffin embedding and sectioning, and the form of cervical histiocytes was observed. Twelve SCID mice with SiHa cell cervical tumor, divided into experimental group and control group, were also used in the study. The mice in experimental group were treated with siRNA-Lipo2000-carbomer gum for 7 d. The control mice were treated with Lipo2000-carbomer gum only. Five days later, the mice were sacrificed and the tumor was collected, and the HPV16-DNA was measured by PCR. RESULTS: (1) Red fluorescence (Cy3) in cervical epithelium was observed in all rabbits. However, no different effect of siRNA transfection was found between the ways of modifying the cervical epithelium permeability. (2) No abnormal change such as flare, swelling and ulcer at all cervical tissue was observed, the cervical cell form was normal. (3) The titer of HPV16-DNA was decreased significantly after siRNA transfection (P<0.05). CONCLUSION: Transfection of siRNA into rabbit cervical epithelium in vivo is successful by using the method of solid phase and inhibits the processes of HPV-DNA, indicating that using RNAi is a practical way to treat HPV infection in human cercix and to decrease the incidence of cercical carcinoma.

Objective To investigate the effect and safety of Compound codeine phosphate syrup with Ambroxol treatment in the stable phase of chronic obstructive pulmonary disease. Methods 100 patients with stable COPD were divided into Compound codeine phosphate syrup with Ambroxolt treatment group (Group A) 50 cases and Compound codeine phosphate syrup treatment group( Group B) 50 cases,drug were given for 3 ～ 7d. The symptom score and efficacy of two groups before treatment and after treatment were compared. Results The symptom score of cough,sputum volume,sputum viscosity ,wheeze,sleep after treatment 8th day were improved significantly ( χ2 = 3. 891 ,χ2 =3. 992, χ2 = 4. 198, χ2 = 3.981, χ2 = 3. 879, allP < 0. 05; Total effective rate of cough, sputum volume, sputum viscosity,wheeze in group A(92. 0% ,94. 0% ,90. 0% ,90. 0% ) higher than that in group B(80.0% ,86.0% ,80. 0%,78.0% ) ( χ2 = 3.991, χ2 = 4. 012, χ2 = 3. 998, χ2 = 3.971, allP < 0. 05); The adverse reactions of A、 B group were 12.0% and 14.0%(χ2 =1.971,P>0.05). Conclusion Compound codeine phosphate syrup with Ambroxol is an effective and safe antitussive in the stable phase of chronic obstructive pulmonary disease.

Objective: To investigate the properties of zirconia toughened glass infiltrated nanometer-ceramic composite (Al 2O 3/nZrO 2) . Methods: Zirconia toughened glass infiltrated nanometer-ceramic composite(Al 2O 3/nZrO 2)powder was prepared with combination of chemical co-precipitation method and ball milling. The shape, size, partical distribution, crystal phase and chemical composition were measured and analyzed. Results: (1) The crystal phase composition of the studied nanometer ceramic composite powder was made up with ?-Al 2O 3, t-ZrO 2 and m-ZrO 2 examined by XRD?(2) The density of the powder was 4.12 g/cm 3?(3) The particle distribution of the powder ranged 0.02～3.0 ?m?(4)Observed with SEM, the particle profile of the powder was regular, the ratio of length and width of the particles was about 1.2. Conclusion: The studied nanometer ceramic composite powder owns good homogeneity, stable chemical composition, reasonable powder-size gradation and may be favourable in the improvement of the packing density of ceramics.

ObjectiveTo study the effect of implantation of the bone marrow cells into infarction myo cardium on the secretion of basic fibroblast growth factor (bFGF), insulin-like growth factor 1 (IGF-1), transforming growth factor-?1 (TGF-?1 ), interleu kin-1 (IL-1), and interleukin-8 (IL-8).MethodsBone marrow cells were implanted into the region of acute myocardial infarct via topical injection. Specimens were harvested at first, 2nd, 4th, 8th week after implantation for the expression of cytokines and vascular density examination by immunohistochemical analysis and the levels of cytokines by radioimmunoassay. ResultsAt first, 2nd, 4th, 8th week after transplantation, the vascular density in the bone marrow cell implant group was significantly higher than that in the control group (P

Breast cancer is one of the most common malignant tumours in women. It threatens the health and life of women. The imaging technology of breast electrical impedance scanning based on the dielectric properties of breast tissues develops a new aspect of early detection and auxiliary diagnosis of the breast cancer. The dielectric properties of human breast tissues reflect the pathological and physiological state of breast tissues and the measurement of these properties serves as the basis for electrical impedance scanning(EIS) technology. In this paper, the measurements and results of dielectric properties of human breast tissues are discussed, and the problems of measurement and the application perspective of the EIS are also explored.

A total of 60 myopia patients (120 eyes) who were going to undergo myopia LASIK were selected in this study. The patients were divided into two groups of anisometropia and non-anisometropia,each group had 30 patients (60 eyes). Checked vision, fusion range,near and distant stereoscopic at 10 day pre-operation and at 1,3 and 6 month in post operation. After the LASIK, all of 60 patients' anisometropia were significantly reduced, binocular stereopsis were obviously improved than pre-operation, especially the anisometropia group; the binocular fusion range also got better,but there was no significant difference between the two groups. This study clarified that the visual function of anisometropia could be improved after LASIK.

An analytical method was developed for the determination of unsymmetrical dimethylhydrazine ( UDMH ) in soil samples by gas chromatography-mass spectrometry with the pretreatment of alkaline distillation and ultrasonic derivatization. After pretreated by the alkaline distillation, the quantitative analysis of UDMH was conducted in selected ion monitoring ( SIM ) mode by using salicylaldehyde as derivatization reagent and ultrasonic to accelerate the derivative reaction. The characteristic ion of the derivative product named salicylaldehyde dimethylhydrazone was m/z 164 . Impact factors including types of the alkaline distillation and the derivative conditions with ultrasonic were investigated. The conditions of derivatization were optimized. Under the optimal conditions, linear range of the method was 0. 4-30 mg/L. The limit of detection (LOD, S/N=3) was 0. 0078 mg/kg. The method was used to detect total UDMH in real soil samples with known concentration. The recoveries ranged from 76% to 108% with relative standard deviations ( RSD) of 12%-19% at different spiked concentration levels from 10 mg/kg to 100 mg/kg. In comparison with the methods of spectrophotometry and Soxhlet extraction-ultrasonic derivatization, this method had lower detection limit, and could be used to detect total UDMH in soil samples.

Objective: To study the effect of bone marrow cells on myocardial regeneration. Methods: Bone marrow cells were implanted into the acute myocardial infarct via topical injection. Specimens were harvested at 1st, 2nd, 4th, 8th weeks after bone marrow cells implantation for morphologic examination. Results: Bone marrow cells with fluorescence had been observed in the implanted site. A portion of the implanted cells had differentiated into myogenic cells. The regenerating myocardial cells observed by electron micrography had been connected with the host myocardium through intercalated discs. The infarct size was significantly smaller in implant group. Conclusion: This study suggested that bone marrow cells are capable to differentiate and regenerate into myocardial cells in the acute myocardial infarct sites and reduce size of infarct.