Objective To investigate the expression and distribution of Kv1.6 in rat hippocampus after status epilepticus (SE) induced by lithium and pilocarpine to explore the relationship between Kv1.6 and epileptogenesis.Methods Forty-eight healthy male Sprague-Dawley rats were randomly divided into experiment group and control group.The rats in each group were randomly assigned into 6-hour,1-day,2-day and 3-day subgroups (n =6).Electroencephalography (EEG) of rats in both groups were recorded to show the electrical activity of the rat brains.Nissel staining was performed to investigate the pathological changes,and immunohistochemistry and Western blotting were applied to analyze the expression and distribution of Kv1.6.Results (1) The EEG of rats in control group showed α wave with uniform amplitude,while the EEG in rats subjected to pilocarpine injection showed slow waves and spike waves with irregular amplitude and rhythm.Sustained spike waves were observed during SE.(2) Nissl staining showed that 6 hours after SE,the neural morphology of hippocampi in experiment group was as the same to that in control group.There was no change in neuronal morphology and numbers.However,1 day after SE,the structure of hippocampi was discrete and the number of neurons was decreased.Two and 3 days after SE,the number of neurons in hippocampi decreased further.Swelling and deformation of neurons were seen.Nissl bodies emerged,decreased or even disappeared.(3) There was no statistically significant difference in the expression of Kv1.6 in CA3 and CA1 areas between experiment group and control group 6 hours after SE (all P＞0.05).One day,2 days and 3 days post SE,the expression of Kv1.6 in CA3 area (0.117 ±0.040,0.135 ±0.029,0.112 ±0.050) decreased obviously compared to control group (0.192±0.054,0.201 ± 0.062,0.184 ±0.042;t---3.861,3.745,5.579,all P ＜0.05);and the expression of Kv1.6 in CA1 area (0.114 ± 0.02,0.082 ± 0.031,0.106 ± 0.043) decreased significantly compared to control group (0.165±0.036,0.187 ±0.025,0.172 ±0.052;t=3.221,6.360,3.645,all P＜0.05).The expression of Kv1.6 did not show statistically significant difference in DG area between experiment group and control group at all time points examined (P ＞ 0.05).The Western blotting showed the same trend.Conclusion The decreased expression of Kv1.6 may play a role in the epileptogenesis.

Objective To investigate the effects of different treatments on elderly patients with breast cancer, and to analyze the factors that affect the treatment effect.MethodsA retrospective analysis was used to analysis the clinical data of elderly patients with breast cancer treated in our hospital from March 2012 to October 2013 were selected as the study object and according to the treatment methods, which were divided into three groups (A, B, C, which a group by breast modified radical surgery combined with intravenous chemotherapy and endocrine therapy, group B with breast modified radical mastectomy+endocrine therapy, group C with breast mass resection and endocrine therapy.The differences of survival rate of 1 groups after three years, 2 years and 3 years were observed, and the difference of survival rate of patients with different clinical pathological characteristics after 3 years was compared.The factors influencing the survival rate of patients after operation were analyzed.ResultsThere was no significant difference in survival rate between the three groups after 1 years, 2 years and 3 years;High differentiation, lymph node metastasis, depth of invasion, T1+T2, TNM stage I+II, immune group of non Yin in the elderly patients with breast cancer of the 3 year survival rate was higher, while patients of different age and diameter of the tumor patients and 3 years survival rate had no significant difference;Will the elderly breast cancer patients age, differentiation degree, tumor size, lymph node metastasis, depth of invasion, clinical stage, immune group of three yin as independent variables, will survival in patients with multi factors logistic regression analysis was used.Statistical analysis available, lymph node metastasis, infiltration depth and the three Yin of the immune group were the risk factors affecting the treatment effect of patients, their OR values were 4.412, 5.138 and 4.085.ConclusionDifferent treatment methods have no significant effect on the survival rate of elderly patients with breast cancer, and lymph node metastasis, depth of invasion and the three Yin of the immune group are the factors that affect the treatment effect.

Objective To prove the application of bilingual teaching in the child health care curriculum. MethodsEnglish dubbing and Chinese subtitling DVD coursewares of child growth and development were played to medical interns.The interns were asked to do questionnaires to examine feasibility and effectiveness. Results In 8-year program medical students,77.8% of them and 64.8% of the 5-year nutrition professional students could understand the contents of more than 90%.If there was no Chinese subtitles,the ratio were only 5.6% and 6.4%.Most students preferred English subtitles and dubbing,and endorsed the model of bilingual teaching. Conclusion DVD coursewares with Chinese subtitles and English dubbing can be widely used in the teaching of child health care.

Objective To explore the clinical characteristics and treatment of paroxysmal supraventricular tachycardia (PSVT) in children. Methods The clinical data of 67 children with PSVT were analyzed retrospectively, and the therapeutic effects of different treatments were compared. Results The clinical manifestations of infants were paleness, shortness of breath, irritability and sweating, and children showed chest tightness, palpitations, abdominal discomfort and fatigue. The curative effect of electric cardioversion, transesophageal atrial pacing, physical therapy, and drug therapy was statistically different (P<0.05), The different cardioversion rates of them were observed for the treatment of paroxysmal supraventricular tachycardia. The cardioversion rate of transesophageal atrial pacing, was the highest, and the rate of physical therapy was the lowest. There was no significant difference in the cardioversion rate between propafenone, digoxin and amiodarone. Conclusion The clinical manifestations of PSVT in infants are atypical and easily to be ignored. There are many methods for treatment of PSVT. The vagus nerve can be stimulated first, and, if no response, either drugs or electric cardioversion and transesophageal atrial pacing can be used. The cardioversion rate of transesophageal atrial pacing is higher. The drug effectiveness for the treatment of PSVT depends on many factors, and our choice of medication varies from person to person.

Objective To investigate the relationship between the single nucleotide polymorphism of aminoimidazole carbexamide ribonucleotide transformylase gene and the efficacy and toxicity of methotrexate treatment in rheumatoid arthritis. Methods Total of 359 patients with RA were divided into mono-therapy with MTX group, combination therapy with other DMARDs group and other DMARDs combination with no MTX treatment group. The clinical and laboratory measurements were evaluated before therapy and 12, 24 weeks after therapy. Efficacy (evaluated by ACR20) and side effects of the drugs were also assessed. Real-time fluorescent quantitative PCR was conducted to test ATIC 347C/G mutation in RA patients and 340 healthy controls. Results There was no statistical significant difference in 347 CC, CG, GG between RA patients and healthy controls. In the MTX mono-therapy group (n=107), 72% (n=77) there was no statistical significant difference in 347CC, CG, GG between patients with good response and patients without efficacy. 32.7%(n=35) of these patients experienced adverse drug reactions. The ATIC G allele carriers (22.4%) experienced a greater frequency of side effects than the CC carriers (OR=2.672, 95%CI, 1.27～5.59, P<0.05). In MTX combined with other DMARDs group (n=128) and other DMARDs combination without MTX group (n=90), the polymorphism in the ATIC gene was not associated with good clinical response and adverse events (P>0.05). Conclusion There is no statistical significant difference between RA and healthy controls in the ATIC347 gene. Polymorphism in the ATIC gene is not associated with clinical response to MTX treatment, but the ATIC347 G allele is associated with MTX toxicity. It maybe used to predict the adverse drug reactions of patients who take MTX.

BACKGROUND: Looking for effective measures to ensure the survival of the implanted stem cells against ischemia-induced hypoxia becomes the major concern in the research of cell transplantation therapy for cerebral infarction.OBJECTIVE: To study the effects of human Persephin gene transfer on hypoxia-induced apoptosis of neural stem cells.DESTGN: A randomized controlled basic study on cells.SETTTNG: Department of Neurology, the Second Affiliated Hospital of Sun Yat-sen University.MATERTALS: This study was completed in the Lin Baixing Laboratory Center of the Second Affiliated Hospital of Sun Yat-sen University from July to December in 2006. Recombinant adenovirus pAdCMV persephin was constructed in our lab. C17.2 neural stem cells were kindly provided by Prof. Snyder, Harvard Medical University, USA. Trypsin and DMEM/F12 were purchased from Gibco Company (USA), fetal bovine serum (FBS) from Sijiqing Biological Engineering Materials Co. Ltd (Hangzhou, China); Poly-lysine from Sigma Company (USA), TUNEL assay kit and FuGENE kit from Roche Molecular Biochemicals Company (Swiss), and S-P immunohistochemical detection kit and DAB reaction kit from Mycine Biological Engineering Company (Fujian). Rat anti-human monoclonal Nestin antibody and rabbit anti-human polyclonal persephin antibody were manufactured by Santa Cruz Company (USA), and persephin anti-senseoligodeoxynucleotide (ODN) was synthesized by Shanghai Biological Engineering Company.METHODS: ① Interventions: C17.2 neural stem cells cultured in vitro were infected by recombinant adenovirus containing persephin gene, and they were divided into four groups: blank control group (Group A, in which the C17.2 neural stem cells were not treated with hypoxia), hypoxic group [Group B, in which the cells were cultured at 37 ℃ in anaerobic incubation containing N2 (0.95 in volume fraction) and CO2 (0.05 in volume fraction)], hypoxia + pAdCMV persephin infection group [Group C, where the cells were cultured under the conditions as in group B after pAdCMV persephin infection for 48 hours], and hypoxia + pAdCMV persephin infection + anti-sense persephin ODN group (Group D, where the cells were infected by pAdCMV persephin and anti-sense persephin ODN. ② Evaluation: The expression of Persephin protein was analyzed using Western blotting; Apoptotic index was detected with terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL) assay; The changes of apoptotic rate was determined with flow cytometry.MAIN OUTCOME MEASURES: Expression of Persephin protein; Apoptotic index; Apoptotic rate.RESULTS: ① Expression of Persephin protein: A specific band (relative molecular mass of 24 000) was detected by Western blotting in pAdCMV persephin infected cells, suggesting the successful expression of persephin gene.Interestingly, the cells infected with both pAdCMV persephin and anti-sense persephin ODN also showed the specific band of about 24 000, but with much less density, indicating that anti-sense persephin ODN could effectively inhibit the expression of pAdCMV persephin. However, this band was not presented in the blank control groups. ② Apoptotic index:The apoptotic index in group C was significantly lower than those in groups B and D (P＜0.01), but still higher than that of group A (P＜0.01), suggesting that persephin gene transfer could attenuate apoptosis to some extent. ③ Apoptotic rate: The apoptotic rate in groups B and D were obviously higher than that in group A (P ＜ 0.01), and it was lower in group C than in groups B and D (P＜0.01).CONCLUSION:Recombinant adenovirus can efficiently mediate Persephin gene transfer into C17.2 neural stem cells,resulting in high expression of the exogenous Persephin in vitro, which effectively reduces C17.2 neural stem cell apoptosis induced by hypoxia.

OBJECTIVE:To systematically evaluate therapeutic efficacy of local application of gentamicin collagen sponge in the prevention of surgical incision infection,and to provide evidenced-reference for clinical treatment. METHODS:Retrieved from PubMed,EMBase,Cochrane Library,CBM,CJFD,VIP and Wanfang databases,randomized controlled trials (RCTs) about lo-cal application of gentamicin collagen sponge(trial group)vs. routine surgery disposal(control group)in the prevention of surgical incision infection were collected. After data extraction and quality evaluation with modified Jadad scale,Meta-analysis was per-formed by using Rev Man 5.3 statistical software. RESULTS:A total of 16 literatures were included,involving 7752 patients. The results of Meta-analysis showed that the incidence of surgical incision infection in trial group was significantly lower than control group,with statistical significance [OR=0.71,95%CI(0.61,0.84),P<0.001]. The packet statistics showed that the incidence of surgical incision infection in cardiovascular surgery group [OR=0.59,95%CI(0.37,0.96),P=0.03] and skin soft tissue operation group [OR=0.34,95%CI(0.15,0.75),P=0.008] were significantly lower than control group. There was no statistical significance in the incidence of incision infection between digestive system operation group and control group [OR=0.62,95%CI(0.25,1.54), P=0.30]. The incidence of surgical incision infection in≤30 d group was significantly lower than control group[OR=0.58,95%CI (0.41,0.82),P=0.002];there was no statistical significance between more than 30 d group and control group [OR=0.86,95%CI (0.71,1.04),P=0.13]. The incidence of surgical incision infection [OR=0.65,95%CI(0.52,0.82),P<0.001] in gentamicin high-dose group (>100 mg) was significantly lower than control group;there was no statistical significance between gentamicin low-dose group (≤100 mg) and control group [OR=0.96,95%CI(0.72,1.28),P=0.77]. CONCLUSIONS:Local application of gentamicin collagen sponge may have certain effect on the prevention of surgical infection. Different types of surgery,observation time and dose have different prevention effects. It should be used carefully according to clinical practice.

Objective To investigate the value of FDG PET-CT in the outcome assessment and prognostic evaluation for recurrent nasopharyngeal carcinoma (rNPC).Methods From January 2008 to December 2013,92 rNPC patients were treated in our center,who were histologically or radiologically diagnosed and re-staged according to the 2008 clinical staging system for nasopharyngeal carcinoma in China.The numbers of patients in stage Ⅰ,stage Ⅱ,stage Ⅲ,and stage Ⅳ were 8,11,39,and 34,respectively.According to the recurrent T stage (rT),the numbers of patients in rT1,rT2,rT3,and rT4 were 10,11,38,and 33,respectively.Twenty-eight patients had recurrence in the neck lymph nodes.All patients underwent pretreatment FDG PET-CT for the whole body or head/neck,and treated by radiotherapy with or without chemotherapy.The relationship of maximum standard uptake value (SUVmax) and clinical factors with clinical outcomes was analyzed.The Kaplan-Meier method was used to calculate overall survival (OS),disease-free survival (DFS),local recurrence-free survival (LRFS),regional recurrence-free survival (RRFS),and distant metastasis-free survival (DMFS).The log-rank test was used for survival difference analysis and univariate prognostic analysis.The Cox model was used for multivariate prognostic analysis.Results The 3-year OS,DFS,LRFS,RRFS,and DMFS were 33.6％,32.1％,32.8％,31.8％,and 33.7％,respectively.The median SUVmax was 8.35 (2.7-21.5).The SUVmax of 7.0 was taken as the optimal cut-off value for all patients.Patients with SUVmax ≤7.0 had a significantly higher 3-year OS rate than those with SUVm ax ＞7.0 (42.0％ vs.28.3％,P=0.019).The univariate analysis revealed that patient age,SUV and rN were significantly associated with OS (P=0.023,0.019,and 0.002).The multivariate analysis showed that SUVmax and rN were significant influencing factors for OS,DFS,and DMFS (HR=1.68,P=0.045 and HR=2.23,P=0.003;HR=1.67,P=0.042 and HR=2.39,P=0.001;HR=1.77,P=0.025 and HR=2.40,P=0.001).Conclusions SUVmax may be one of the useful prognostic factors for OS,DFS,and DMFS in rNPC patients.

18F-fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET-CT) is the integration of functional imaging and anatomic information,which is found to be particularly valuable in TNM staging,tumor volume delineating,post-treatment assessment,identification of recurrent and residual nasopharyngeal carcinoma (NPC).The combination of 18F-FDG PET-CT with other image technologies,different tracer agents,and specific molecular biomarkers can improve the application value of 18F-FDG PET-CT in NPC.

Objepctive To explore the protective effect of modified recombinant human aFGF ( Mrh-aFGF) on the neurons in ventral tegmental area of rats with Parkinson’ s disease ( PD) . Methods The 54 SD rats were ramdomly divided into the control group,the model group and the treatment group,and there were 18 rats in each group. PD rats of the model group and the treatment group were induced by in-jecting 6-OHDA into the left substantia nigra compacta ( SNC) and ventral tegmental area ( VTA) to build the PD model. Rats in the treat-ment group were given Mrh-aFGF injection after lateral ventricle injection,and the behavioral changes of the rats were detected after apomor-phine injection. The morphologic features and pathological changes of neurons in the ventral tegmental area were observed by Nissl’ s staining and electronic microscope. Results Compared to the right VTA of PD rats,the number of neurons in left side ( the injured side) decreased significantly in the model group(P<0. 05). In the treatment group,the structure of left (the injured side) VTA was markedly improved and the number of neurons was increased one week,two weeks and four weeks after operation compared with the model group (P<0. 05). The neurons in the VTA of the model group were found to have karyopyknosis,endoplasmic reticulum,degranulation,mitochondria swelling,cristae disappear,pre-synaptic and post-synaptic membranes swelling,and synaptic cleft disappear. In the treatment group,the ultrastructure of the neurons in the VTA,such as nuclei,mitochondria,synaptic structure,kept well compared to the model group. Conclusion Mrh-aFGF could protect the neurons in the ventral tegmental area from the loss and improve the ultrastructure of the neurons of PD rats.