Streptomyces phage ?C31 integrase is a site-specific recombinase and introduce foreign gene to unidirectional recombination.Because of its integration mediated by ?C31 integrase without any cofactors and especially directed integration,it possesses high efficiency and stable expression of foreign gene.These advantages make it an attractive tool for genetic engineering.It has been widely used to transgene integration in mammalians and provides an opportunity to overcome the bottlenecks in the generation of transgenetic animals,such as random integration,low integral rate,low level of expression and so on.The ?C31 integrase will have a wide application in the near future.

Objective To discuss the characteristics of pulmonary function in children patients with positive bronchodilating response using impulse oscillation system(IOS) and provide the evidence for clinical diagnosis and performing IOS.Methods Seventy children patients with bronchodilating response using IOS were recruited randomly for this study.Forty children patients with positive bronchodilating response were regarded as positive group and the other thirty children patients with negative bronchodilating response were regarded as negative group.The IOS parameters,for example,total respiratory impedance (Z5),respiratory resistance at 5 Hz(R5),reactance at 5 Hz(X5),peripheral respiratory resistance(Rp) in the two groups were analyzed.Results Z5,R5,X5 of the positive group [(123.45 ± 24.75)％,(120.09 ± 25.40)％,(138.62 ± 33.48)％] were higher than those of the negative group [(103.89 ± 16.30)％,(102.67 ± 18.16)％,(111.85 ± 14.93)％].There were significantly different between the two groups (P ＜ 0.05).Moreover,Rp ≥ 19.89 cmH2O/ (L·s)(1 cmH2O =0.098 kPa) in the positive group was 50.00％(20/40),which was higher than that in the negative group[23.33％(7/30)].There was significant difference between the two groups(P＜ 0.05).Conclusions The impedance of children patients with positive bronchodilating response using IOS is significantly increased,especially X5.When IOS parameters ≥ 100％,especially X5 ≥ 100％,which suggest that perform the bronchodilation test in order to decrease the rate of missed diagnosis of asthma.

A master-slave electrical impedance tomography (EIT) system for body complex impedance based on digital signal processor (DSP) is designed in this paper. Used as the master computer, a PC performs the image reconstruction and display on time, while DSP carries out such tasks as electrode selection, data acquisition and data communication with the master. Based on DDS technique, the signal generator can create the sine wave signals, and it's amplitude, frequency and phase can be continuously adjusted. The designed feedback unit can improve the linearity and the stability of the voltage-controlled current source effectively. Undersampling technology and digital demodulation technology are used in this system in order to attain the information of real and imaginary components of the body complex impedance. Back projection method is adopted to reconstruct the image in this system. Experimental results show that this system improves the data acquisition speed and the image resolution.

Objective:Through animal experiments to observe the behavior and serum malondialdehyde(MDA)and total antioxidative capacity(T-AOC)content after electro-acupuncture "Baihui,Fengfu,Shenshu,Xuanzhong" Point of Alzheimer, s disease in rat.Method:Select forty Healthy adult Wistar rats,the Wistar rats were randomly divided into four groups,model group,electro-acupuncture group,western medicine group,electro-acupuncture and western medicine group.Abdominal cavity injection of D-galactose in order to prepare the Alzheimer, s disease model rats.Electro-acupuncture group:acupuncture Baihui,Shenshu, Fengfu,Xuanzhong.Western medicine group:Piracetan intragastric administration one times a day.Every other day give the fixed and crawl for ten minutes.Electro-acupuncture and western medicine group:Accupuncture treatment and drug treatment are above all.Model group:Every day give the same fixed and crawl as electro-acupuncture group.Behavior and serum MDA,T-AOC levels tested after treatment.Results:electro-acupuncture group,electro-acupuncture and western medicine group could extend the incubation period,reduce the number of errors(P

BACKGROUND: The effective therapy of artificial liver for severe hepatitis needs an absorbing material which possesses strong adsorptive property, high adsorption rate and good blood compatibility.OBJECTIVE: To study the adsorptive property of eight novel adsorbents for plasma bilirubin and cytokines in severe hepatitis patients. DESIGN: A controlled observation.SETTINGS: Graduate School of Tianjin Medical University, Tianjin Haihe Hospital, Tianjin Third Central Hospital and the Institute of Polymer Chemistry in Nankai University.PARTICIPANTS: All plasma was collected from 30 severe hepatitis patients hospitalized in Tianjin Third Central Hospital from November 2004 to November 2005. Informed consent was obtained from each patients. This experiment was approved by the hospital ethical committee. All the patients were divided into two groups at random: group 1 (n=10) and group 2 (n=20). The level of total bilirubin (TBiL) before therapy in two groups was (377.3±147.5) μmol/L and (327.6±140.1) μmol/L, respectively.METHODS: ①Adsorbents: Chitosan (Qingdao Lizhong Chitosan Factory, Shandong) with relative molecular weight 97 000 and de-acetyl grade 85%; Adsorbents No.1-3 were prepared by using 1%, 3%, 5% polyethyleneglycol (relative molecular weight 600) as porogenic agent. Adsorbent No.4 was aminated crosslinked chitosan microspheres; Adsorbent No.5 was divinyl-benzene crosslinked macroporous polystyrene microspheres; Adsorbent No.6 was post-crosslinked macroporous divinyl-benzene styrene copolymer microspheres; Adsorbents No.7 and 8 were chitosan wrapped adsorbent No.5 and 6.②Detection: Step 1: 3 mL plasma collected from each severe hepatitis patient in group 1 was absorbed with 1 mL of 8 kinds of adsorbents. Levels of plasma TBiL, direct bilirubin (DBiL) and indirect bilirubin (IBiL) before and after adsorption were determined by using the vanadate oxidation method to analyze the average adsorption capacity so as to screen the adsorbents with the better adsorptive properties. Step 2: 3 mL plasma collected from each severe hepatitis patient in group 2 was absorbed with 1 mL of two adsorbents selected from the step 1. The levels of bilirubin, interleukin-6 and tumor necrosis factor-α before and after the adsorption were analyzed by ELISA method.MAIN OUTCOME MEASURES: The levels of bilirubin and cytokines before and after the adsorption were determined.RESULTS: ①The data in the first step experiment showed that after No.4 and No.5 adsorbents were used, the level of plasma TBiL, DBiL and IBiL were significantly decreased (P < 0.01); no differences were found for other six kinds of adsorbents (P > 0.05).②The data in the second step experiment showed that the average levels of plasma TBiL, DBiL, IBiL, interleukin-6 and tumor necrosis factor-α were remarkably reduced after using adsorbents No.4 and No.5 (P < 0.01). Compared with adsorbent No.5, there were significant decrements for adsorbents No.4 (P < 0.01).CONCLUSION: Aminated chitosan microsphere has significant effects on adsorbing bilirubin and cytokines in plasma of severe hepatitis patients in vitro.

Objective:To establish the criterion of bacterial endotoxins test for hemocoagulase atrox for injection and measure the endotoxin concentration in hemocoagulase atrox for injection by the kinetic turbidimetric technique. Methods:The limit of bacterial en-dotoxins in the product was designed according to ChP 2010. Four endotoxin concentrations were prepared to obtain the standard curve. The interfering test was done by measuring the concentration of endotoxin added into the sample solution. The endotoxin concentration in the sample solution was measured. Results:The absolute value of the correlation coefficient was 0. 988 6 (must be above or equal to 0. 980), suggesting the standard curve was valid. The recovery of the added endotoxin in the sample solution was within 50 to 200%when the concentration of the product sample was 0. 25 KU·ml-1 . The measured endotoxin concentration in the sample met the re-quirements for bacterial endotoxins. Conclusion:The bacterial endotoxins assay method for milrinone injections is established, and the kinetic turbidimetric technique is suitable for the bacterial endotoxin test of the product.

Adult ; Benzamides ; pharmacology ; Humans ; Hypereosinophilic Syndrome ; drug therapy ; genetics ; Imatinib Mesylate ; Male ; Mutation ; Oncogene Proteins, Fusion ; Piperazines ; pharmacology ; Pyrimidines ; pharmacology ; Receptor, Platelet-Derived Growth Factor alpha ; genetics ; mRNA Cleavage and Polyadenylation Factors

Chromosome Aberrations ; Cytogenetic Analysis ; standards ; Humans ; Multiple Myeloma ; diagnosis ; genetics

Objective To evaluate the efficacy and safety of near-infrared light combined with tacrolimus 0.1％ ointment in the treatment of facial glucocorticoid-dependent dermatitis.Methods A total of 68 patients with facial glucocorticoid-dependent dermatitis were enrolled from Department of Dermatology of Yantai Yuhuangding Hospital between December 2014 and December 2015,and randomly and equally divided into treatment group and combination group by a random number table.The treatment group was treated topically with tacrolimus ointment twice a day for 4 weeks.Besides the treatment with tacrolimus ointment,the combination group was irradiated with near-infrared light once a week for 4 sessions.After 4-week treatment,improvement in clinical manifestations such as itching and burning sensation was evaluated,so was the therapeutic effect.Results The combination group showed significantly higher response rate (85.3％ [29/34]) compared with the treatment group (61.8％ [21/34],x2 =4.84,P ＜ 0.05).Additionally,response rates for itching and burning sensation,erythema,scales and papules were all significantly higher in the combination group than in the treatment group (x2 =4.84,6.35,8.42 and 5.52,respectively,all P ＜ 0.05).Conclusion Near-infrared light combined with tacrolimus ointment is effective and safe for the treatment of facial glucocorticoid-dependent dermatitis.

AIM: To investigate the effect of homocysteine (HCY) on the induction of macrophage inflammatory protein-1? (MIP-1?) expression in cultured human umbilical vein endothelial cells (HUVECs). METHODS: After exposure of the cultured HUVECs to HCY at increasing concentrations (0.1, 0.5 and 1 mmol/L) for 8 h, the MIP-1? mRNA expression was determined by in situ hybridization using a MIP-1? cDNA probe, and the MIP-1? protein expression was measured by cell enzyme-linked immunosorbent assay (ELISA) using a goat anti-human MIP-1? monoclonal antibody. RESULTS: The in situ hybridization showed that cultured HUVECs were able to express MIP-1? mRNA at a low level that was purplish blue granules in cytoplasm. After exposure to HCY at the concentrations mentioned above, the expression of MIP-1? mRNA was significantly increased in a dose-dependent manner. Analysis of variance showed that there was significant difference between groups ( F= 606.38, P