Objective To search for the mechanism of NO and TNOS/iNOS in cerebral vascular stenosis,the changes of these serum factors in different kinds of cerebral vascular stenosis were studied. Methods Biochemistry assays were adopted,to analyze serum NO and TNOS/iNOS in different vascular stenosis group. Results Serum NO contents of ' Mix' (P=0.000) or ' MCA' (P=0.001) significantly increased. INOS activity of ' In' (P=0.004) and ' MCA' (P=0.002) markedly increased. And TNOS activity of ' In' group significantly weakened (P=0.032),but the TNOS activity of ' Mix' (P=0.011) and ' MCA' (P=0.018) group markedly intensified. Conclusion NO and TNOS/ iNOS partly participate in the occurrence mechanism of cerebral vascular stenosis. And the study provided theory basis for studying multiple factors of cerebral vascular stenosis.

Objective: To investigate the relationship between plasma level of asymmetric dimethylarginine (ADMA) and coronary artery ectasia in relevant patients. Methods: A total of 72 patients received coronary angiography (CAG) in our hospital were studied and the patients were divided into 3 groups: Coronary ectasia group, Coronary stenosis group and Normal coronary group.n=24 in each group. Plasma levels of ADMA, symmetric dimethylarginine (SDMA) and L-arginine (Arg) were measured by HPLC-MS/MS methods. The relationship between ADMA and CAD was examined by Logistic regression analysis. Results: Plasma level of ADMA in Coronary ectasia group (0.437 ± 0.098) μmol/L and Coronary stenosis group (0.456 ± 0.088) μmol/L were higher than that in Normal coronary group (0.381 ± 0.057) μmol/L,P<0.05. The ratio of Arg/ADMA in Coronary ectasia group (208.54 ± 61.52) and Coronary stenosis group (220.00 ± 104.82) were lower than that in Normal coronary group (254.26 ± 76.22),P<0.05. Logistic regression analysis presented that with adjusted age, gender, smoking, family history of CAD and LDL-C level, and plasma ADMA was still related with CAD (Partial regression coefifcient 9.469, P=0.011). Conclusion: Plasma levels of ADMA were higher in patients with coronary artery ectasia/stenosis than those with normal coronary artery; while ADMA levels were similar between the patients with coronary ectasia and stenosis. Plasma ADMA level was the independent risk factor of CAD.

Objective To systematically assess the efficacy and safety of electroacupuncture for trigeminal neuralgia. Method Randomized controlled trials of a electroacupuncture treatment for trigeminal neuralgia were sought by a computer search of CNKI,Wan Fang Data,VIP,CBM,PubMed,EMbas and The Cochrane Library.The retrieval time limit was from March 1996 to March 2016. Two reviewers sifted the literature and extracted data independently according to the inclusion and exclusion criteria andthen assessed the riskofbias of the included literatureusing the Cochrane risk of bias assessment tool.Ameta-analysis was made using RevMan 5.3.Result Finally, 12 articles were included with atotal of 847 subjects.The results ofmeta-analysis showed that the total efficacy rate was higher in the electroacupuncture group than in the control group [OR=4.04,95%CI(2.67, 6.13),P<0.00001].There were no statistically significant differences in the VAS score [MD=﹣0.06,95%CI(﹣0.59, 0.47),P=0.82] and the recurrence rate [OR=0.64,95%CI(0.05,7.45),P=0.54] between the electroacupuncture and control groups.Conclusion The currentlimited evidenceshows that the total efficacy rate fortrigeminal neuralgiais higher in the electroacupuncture group than in the control group.There are no statistically significant differences in the VAS score and the recurrence rate of trigeminal neuralgia between the electroacupuncture and control groups of patients.But the conclusions need more high-qualitytrials for validation owing to the limitation of the sample size of the included studies.

AIM: To study the expression of hepatitis B virus core gene in Pichia pastoris and to obtain high-level expressed recombinant HBcAg with good immunoreactivity and high specificity. METHODS: HBV core gene was amplified by PCR from plasmid pHBV1 which contained HBV whole DNA sequence. The PCR product was cloned into pGEM-T vector by TA cloning strategy. After confirmed by DNA sequence analysis, the gene of interest was inserted into the yeast expression vector pPIC9. The recombinant plasmid pPIC9-cAg was constructed and transformed into GS115 by electroporation. The recombinant yeast GS115 was induced by 0.5% methanol. The expressed product was analysed by SDS-PAGE,Western blot and ELISA. RESULTS: The restriction analysis and DNA sequence analysis proved that HBV core gene had already been cloned to yeast expression plasmid pPIC9. The expressed HBcAg existed in SDS-PAGE. Good immunoreactivity and high specificity of the recombinant HBcAg have been proved by ELISA and Western blot. The titre of the recombinant HBcAg in the cell lysate was 1∶ 12 800 . CONCLUSION: The recombinant plasmid pPIC9-cAg was successfully constructed. The recombinant HBcAg with good immunoreactivity and high specificity was successfully expressed in Pichia pastoris expression system and can be applied to further developing HBcAb immunoassay. [

Objective The infection rate and the corresponding intervention measures of postoperative application of ampicillin sodium to reduce abdominal incision after operation. Methods The control group in the conventional antibiotic administration based on preoperative, postoperative combined with ampicillin sodium; research group in the control group based on the use of the corresponding operation room intervention measures. Results The incidence of incision infection in study group (18.18%) was significantly lower than the control group (4.55%)(P<0.05); the control group SDS, SAS scores did not change significantly than before , SDS of the study group, SAS scale score was significantly lower than before (P<0.05). Conclusion Application of ampicillin sodium combined with the corresponding intervention measures can significantly reduce abdominal incision surgery in two postoperative infection rate and is conducive to protect the quality of life of patients, life safety.

Objective To carry out hand hygiene(HH) quality control circle(QCC) activity by using WeChat group, improve HH compliance of health care workers(HCWs), and enhance the circle members' ability to solve problems.Methods In June 2015, 11 healthcare-associated infection control professionals in a hospital created HH WeChat group by using cellphones, activity cycle was once every two weeks, professionals analyzed the existing problems, and formulated countermeasures as well as implemented methods by group chat form, circle members introduced and implemented strategies to HCWs in their departments, so as to achieve the implementation effect.Results After the creating of WeChat QCC, HCWs' HH compliance increased from 56.71% before activity to 85.94% after activity, difference was statistically significant (X2=61.928, P<0.05);QCC members' responsibility, self-confidence, enthusiasm, harmony degree, team cohesiveness, quality control technique, communication, coordination, and problem-solving skill were all significantly improved.Conclusion Application of WeChat QCC activity can improve HH compliance of HCWs and the ability of circle members.

Objective To investigate the expressions and clinical significanees of suppressors of cytokine signaling-1 (SOCS-1) and SOCS-3 in myocardium of patients with sudden cardiac death (SCD). Method This study included myocardial autopsy specimens of 24 patients admitted between 2005 and 2006. Of them, 9 cases had the findings of autopsy examination consistent with coronary atberosclerosis (non-myocardial infarction) leading to SCD (non-MI group), 7 patients died of acute myocardial infarction (MI group) and 8 patients died of traffic accidents and trauma The expressions of SOCS-1 mRNA and SOCS-3 mRNA in the myocardium of non-MI and con-trol group were detected by using RT-PCR. The levels of SOCS-1 protein and SOCS-3 protein were detected by us-ing immunohistochemistry. Statistical analysis were performed by using SPSS version 13.0 software and the data were processed with ANOVA test. Results The expressions of SOCS-1 mRNA and SOCS-3 mRNA in non-MI and MI groups were were significantly higher than those in control group (0. 788±0. 101) and (0. 741±0.111) vs.(0.436±0.044) (P <0.01); (0.841±0.092) and (0.776±0.070) vs.(0.454±0.076), P <0.01, re-spectively). The antibody-positive cells of SOCS-1 protein in myocardium of non-MI group and MI group were significantly higher than those in myoeardium of control group (320.00±48.48) and (347.14±70.88) vs.(42.50±10.35) (P < 0.01), respectively. The antibody-positive cells of SOCS-3 protein in myoeardium of non-MI group and MI group were significantly higher than those in myocardium of control group (381.11±59.25) vs.(40.00±10.69), (P < 0.01)and (332.86±111.91) vs. (40.00±10.69), (P =0.001). Conclusions The expressions of SOCS rnRNA and SOCS-3 mRNA in myoeardium of patients with SCD from coronary diseases are significantly increased contributing to the pathogenesis of SCD.

Objectives: To express HBeAg in prokaryotic and eukaryotic cells and compare the two types of HBeAg in the anti-HBeAg testing. Methods: HBeAg was expressed both in E.coli cells and in silk worm cells, purified by Sephacryl S-200.HBeAg protein concentration and antigenic titer were determined respectively by ultraviolet-spectroscopy and EIA. Results: HBeAg produced by E.coli cells: Activation ratio was 10 000/mg, HBeAg/HBcAg = 50; The specificity in testing anti-HbeAg was 96%;HBeAg produced by silk worm cells: Activation ratio was 160 000/mg, HBeAg/HBcAg = 5 000, The specificity in testing anti-HbeAg was 100%. Conclusions: HBeAg produced by eukaryotic cells contained much lower proportion of HbcAg and higher activation ratio, which therefore bring about a possibility to improve the quality of the kit for testing Anti-HBe.

Objective To investigate the operative indications for polypoid lesions of gallbladder(PLG) and avoid cholecystectomy for PLG without operation signs.Methods Retrospective analysis of 828 cases of PLG confirmed by pathologic examination was made.Results (1)Cancer should be suspected when a patient is older than 50 years or has a polypoid lesion larger than 1.0 cm.(2)The cholecystectomies for PLG accounted for 2.7%-7.1%of all cholecystectomies in the corresponding period,and cholesterol polyps accounted for 86.11%of all PLG,and carcinoma of gallbladder accounted for 1.92%of all PLG.Conclusion At present most of PLG accepting cholecystectomy are cholesterol polyps,so the high-risk factors of the neoplastic polyps and the operative indications for PLG should be considered deliberately.

AIM:To explore the protective effect of osthole on the SH-SY5Y cells transfected with APP595/596 gene, and to investigate the molecular mechanism.METHODS:The SH-SY5Y cells were transfected with APP595/596 gene in vitro for establishing a cell model to study the pathogenic role of amyloid β-protein ( Aβ) .The cell viability was detected by CCK-8 assay.The release of lactate dehydrogenase ( LDH) was determined by the colour reaction of dia-phorase-INT.The cell apoptotic rate was analyzed by flow cytometry.The expression of β-site APP cleaving enzyme 1 ( BACE1) at mRNA and protein levels was detected by RT-PCR and Western blot.The expression of Aβwas measured by the technique of immunofluorescence cytochemistry and Western blot.RESULTS: Treatment with osthole inhibited the LDH release, and increased the viability of the cells.The percentage of apoptotic cells was also significantly decreased. Osthole also inhibited the expression of BACE1 at mRNA and protein levels and the protein expression of Aβ.CONCLU-SION:Osthole has protective effect on SH-SY5Y cells transfected with APP595/596 gene.The mechanism may be associ-ation with inhibiting the mRNA and protein expression of BACE1.