Objective To explore the effect of valium and barbitone in the treatment of convulsion in neonate. Methods 156 children with convul sion were randomly divided into two groups, 77 cases in control group and 78 cases in treatment group. Results The instant and total effective rates of treatment group and control group were companed, respectively. There were significant difference between these two groups.Conclusion Valium and Barbitone is effective in treating neonate with convusion.

Objective :To study the effect and mechanism of retinoic acid(RA) on thymocytes development. Methods:Thymus tissue culture system was used to investigate the roles of RA in maturation development of thymocytes. Thymus tissues were cultured with or without retinoic acid and/or retinoic acid receptor antagonist. The cultures were harvested after 24, 48 and 72 hours, respectively. Thymocytes were stained with fluorescence labeled anti-CD3, anti-CD4, anti-CD8 antibodies and analyzed by flow cytometry. The real time quantitative RT-PCR assay was used to detect the retinoic acid receptor (RAR) mRNA expression in thymocytes. Results:The thymus tissue culture system was able to support the maturation of thymocytes. Addition of RA to the culture system promoted thymocytes differentiation from immature CD4+CD8+ cells to mature CD4+ cells, but inhibited the transformation from immature CD4+CD8+ cells to mature CD8+ cells. The effect was marked after 24h culture, and was antagonized by Ro41-5253. RA enhanced the expression of RAR mRNA in thymocytes. A positive correlation was found between the expression of RAR mRNA and the percentage of CD4+CD8+ cells and a negative correlation between the expression of RAR mRNA and the percentage of CD8+ cells. Conclusion:RA likely play an important role in thymocytes development, perhaps by affecting the relative expression of RAR gene.

BACKGROUND:Due to complicated and special lumbar spinal stenosis disease and different degrees of lumbar degeneration in the elderly, it requires very careful choice of repair methods and repair technology.
OBJECTIVE:To investigate the indications and prognosis effect of the treatments of elderly lumbar spinal stenosis by selective decompression of lumbar root canal under direct vision and laminectomy.
METHODS:Clinical data of 167 elderly patients with lumbar spinal stenosis were retrospectively analyzed. A total of 82 patients were treated with selective decompression of lumbar root canal as the selective decompression group, with a clear nerve root compression but without central canal stenosis. A total of 85 patients were treated with laminectom and treated with pedicle screw fixation as the whole lamina cut group, with distinct central canal stenosis. The indications were analyzed between the two groups. Clinical effects were assessed using Japanese Orthopaedic Association and Oswestry Disability Index before and after surgery.
RESULTS AND CONCLUSION:(1) Al patients were operated successful y. There was no serious
complication during treatment. (2) Japanese Orthopaedic Association and Oswestry Disability Index were significantly improved at last fol ow-up in two groups compared with preoperation (P<0.05). No significant difference in Japanese Orthopaedic Association and Oswestry Disability Index was detected between the two groups at various time points (P>0.05). Clinical symptoms disappeared or relieved at last fol ow-up in two groups. The prognosis in two groups had significantly improved. (3) Results indicated that laminectomy and pedicle screw fixation in elderly patients with lumbar spinal stenosis and central canal stenosis obtained significant effects. For elderly patients with lumbar spinal stenosis but without central canal stenosis, selective decompression of lumbar root canal under direct vision was given, and it is effective and reliable. The two methods are suitable for different patients, and are effective and reliable way to repair.

A drug is composed of fragments with their functional and structural characteristics. Functional fragments contain structural elements known as pharmacophores which generate the bioactivity of the drugs, while structural fragments assemble the functional fragments into a specific skeleton also crucial for the activity. Although drug molecules possess structural diversity and complexity, the fragments usually have some similarity. They normally have simple texture, low molecular weight and log P. The aim of fragment-based drug discovery is to classify and screen the collections of fragments and subsequently expand, link, or merge them to obtain new chemical entities. This theory refines the traditional structure-based and the high throughput screen-based drug discovery strategy, and facilitates the reduction of molecular size and the improvement of drug-like properties, which will certainly increase the probability of developing new drugs. In this article, we reviewed the concept, methodology of fragment-based drug discovery and detailed a number of examples to illustrate the optimization strategies of this discovery method.

Objective To study the role of chronic prostatitis(CP)in the pathogenesis and development of IgA nephropathy(IgAN). Methods The incidence rate of CP was compared between the patients with IgAN and the patients with non-IgA mesangial proliferative glomerulonephritis. Furthermore, the clinical and pathological features were compared between the IgAN patients without CP and those with CP. The therapeutic effect of anti-inflammatory treatment in IgAN patients with CP was evaluated. Results Incidence of CP in IgAN patients was 44.7% and that in non-IgA mesangial proliferative glomerulonephritis patients was 21.6%. There was significant difference in the incidence of chronic prostatitis between the two groups. The incidence of glomerular sclerosis and the deposition of immune complexes in vascular wall in IgAN patients with CP were higher than that in patients without CP. The treatment of CP may be beneficial in ameliorating IgAN in some patients. Conclusion Chronic prostatitis is one of the probable pathogenetic factors in IgAN.

OBJECTIVE To discuss the diagnosis and endoscopic treatment of congenital basal encephaloceles in infants.METHODS We retrospectively reviewed the clinical data of 6 infants with congenital basal encephaloceles in Beijing Children's Hospital between January 2014 to September 2016. CT and MRI were performed routinely. All patients underwent endoscopic resection of encephaloceles and repair of skull base defects. RESULTS Five patients presented with transethmoidal encephaloceles and one transsphenoidal encephaloceles. All patients underwent endoscopic procedure successfully. There were no complications except for one 7-month old girl who got purulent meningitis. All patients had favorable clinical outcomes during a follow-up of 3 to 29 months.CONCLUSION For infants with persistent nasal obstruction and nasal neoplasms, congenital basal encephaloceles should be considered. Nasal coronary CT and sagital MRI are of paramount importance in the diagnosis of congenital basal encephaloceles in infants. The endoscopic procedure is the safe and effective method for the management of congenital basal encephaloceles in infants.

OBJECTIVE To investigate the short-term clinical efficacy of sublingual immunotherapy in children with allergic rhinitis. METHODS Forty-four patients, from 3-14 years of age, with mite-sensitive allergic rhinitis were treated sublingually with standardized dermatophagoidesfarinae extract. After treatment of 3 or 6 months using the dermatophagoidesfarinae extract, the total nasal symptoms score(including nasal congestion, nasal itching, rhinorrhea and sneezing scores), total rhinitis medicine scores, visual analog scale scores and the percentage of blood eosinophilic granulocyte(Eos%) before and after treatment were evaluated. SPSS 20.0 software was used to analyze the data. RESULTS After 3 or 6 months' treatment,thenasal symptoms score(including nasal congestion, nasal itching, rhinorrhea and sneezing scores), total rhinitis medicine scores and visual analog scale scoreshad significantly reduced,comparing with that before treatment(all P<0.05). The comparison of the total nasal symptoms score(including nasal congestion, rhinorrhea and sneezing scores), total rhinitis medicine scores and visual analog scale scores between 3 months and 6 months treatment had shown no significant difference (all P>0.05), while nasal itching scores had significantly reduced(Z=-4.185, P<0.05). After 6 months' treatment, the percentage of Eos% had significantly reduced compared with that before treatment(Z=-4.544, P<0.05). CONCLUSION SLIT could be an effective treatment in patients with allergic rhinitis sensitive to house dust mite. It would have effect after3 months treatment and Eos%reduced significantly after 6 months treatment.

Due to the complicated pathogenesis of cardiac arrhythmia, the safe and effective therapeutic strategies for cardiac arrhythmia remain an urgent medical problems in the recent years. In this paper, we introduced the research practice of anti-arrhythmic agents targeting on potassium ion channel. The research progress of anti-arrhythmic agents in up-to-date literatures were also reviewed and prospected.

Objective To investigate the chemical constituents of red algae Hypnea charoides. MethodsThe constituents were isolated by column chromatography and their structures were elucidated by chemical properties and spectroscopic analyses. Results Three compounds were isolated and their structures were identified as 3, 6-dimethyl-8-(4-methyleneheptan-3-yloxy) octane-1-amine (Ⅰ), palmitate-K (Ⅱ), and (2R, 1′S, 2′S, 3′R)-N-(1′-hydroxymethyl-2′, 3′-dihydroxy-heptadecenyl)-2-hydroxy-12, 13-methylene-tetracosanamide (Ⅲ). Conclusion Compounds Ⅰ and Ⅲ are new compounds named as charoidesine and charoidesamide.

New characteristics and changes of laboratory security were summarized,and then current status and problems of awareness of laboratory security of medical postgraduate under the new situation were analyzed in detail.Based on laboratory security education in Center of Experimental Teaching for Postgraduates in Medicine at Xi'an Jiaotong University,strategies to enhance their awareness and capacity of laboratory security were proposed.Compilation of textbooks on laboratory security,development of curriculum content,training of laboratory security practice,and establishment of evaluation system and laboratory access regulation,will be helpful to maximize safety of postgraduates and to guarantee security of laboratory.