Objective:To investigate the efficacy and safety of less invasive surfactant administration(LISA) of neonatal respiratory distress syndrome(NRDS).Methods:From July 2017 to December 2018, 50 premature infants with birth weight ≤1 500 g and/or gestational age≤32 weeks diagnosed as NRDS at the Fifth Medical Center of PLA General Hospital were randomly divided into LISA group( n=25)and INSURE group( n=25). The patients in LISA group was inserted fine duct into the trachea through direct laryngoscope under nasal continuous positive airway pressure (nCPAP) and pulmonary surfactant was injected.The INSURE group adopts endotracheal intubation-pulmonary surfactant-nCPAP was performed after unplugging.The changes of vital signs, blood gas indexes, adverse reactions and the incidence of complications were compared between two groups at different time points. Results:There was no significant difference in respiration, heart rate, systolic blood pressure, diastolic blood pressure and PaO 2, PaCO 2, BE, SpO 2 between two groups at different administration time points.Although the pH value of LISA group was lower than that of INSURE group, it was within the normal range.There was no significant difference in bronchopulmonary dysplasia, intraventricular hemorrhage, periventricular leucomalacia and other complications between two groups, and there was no death, air leakage, retinopathy of prematurity and pulmonary hemorrhage in both two groups.In addition, there was no significant difference in hospitalization days, total medical expenses, oxygen use time between the two groups(all P>0.05). Conclusion:Compared with INSURE technology, LISA technology has its feasibility for premature infants with NRDS, but the effectiveness and safety in the practical application need to be further confirmed.

Objective:To examine the expression of TRAF6 in esophageal organization from protein level and analyze the correlations between TRAF6 expression and clinical features.Methods: Seventy-eight patients with esophageal adenocarcinoma who were admitted to the Department of Oncology , Henan Province Hospital of TCM from January 2005 and January 2010 were finally eligible for present study and the corresponding esophageal normal tissues and clinical data were collected .All the specimens were confirmed by pathology for esophageal squamous cell carcinoma or esophageal normal tissues .The expression of TRAF6 in the tissue samples was detected by immunohistochemistry .The correlation between the TRAF6 expression and clinical characteristics of patients was analyzed.Results:The positive expression rate of TRAF 6 in esophageal cancer organizations and normal esophageal mucosal tissues were 71.79%and 10.26%,respectively.The positive expression rate of TRAF6 in esophageal cancer were significantly higher than those in normal esophageal mucosal tissue ( P<0.05 ) .The positive expression rate of TRAF 6 in esophageal cancer organizations has nothing to do with the age,sex,tumor differentiation degree and size(P>0.05),but with lymph node metastasis and clinical stage (P<0.05).Patients with positive TRAF6 expression had significantly lower five-year survival rate than those with tumors having positive TAK1 expression.Conclusion:TRAF6 may play an important role in the pathology and development of squamous cell carcinoma ,and could be an important therapeutic target in the treatment of esophageal cancer .

An exogenous avian leukosis virus (ALV) strain SDAU09C1 was isolated in DF-1 cells from one of 240 imported 1-day-old white meat-type grand parent breeder chicks. Inoculation of SDAU09C1 in ALV-free chickens induced antibody reactions specific to subgroup A or B. But gp85 amino acid sequence comparisons indicated that SDAU09C1 fell into subgroup A; it had homology of 88.8% - 90.3% to 6 reference strains of subgroup A, much higher compared to other subgroups including subgroup B. This is the first report for ALV of subgroup A isolated from imported breeders.

Objective To study the difference in fibrinogen and D-dimer between the patients with ST-ele-vation myocardial infarction (STEMI) and those with normal angiography of coronary artery.Methods 100 patients with STEMI who underwent PCI and 100 patients with normal coronary arteriograms as controls from Jan.2005 to Dec.2007 were studied.Plasma concentrations of fibrinogen and D-dimer were compared.Results There was no significant difference in gender, age, history of hypertension and diabetes and smoking between the two groups.Plas-ma concentration of fbfinogen(Fg) was higher in control group [(2.65±0.68 )g/L ] than STEMI group [(2.38±0.91)g/L] (P<0.05).The square root of plasma concentration of D-dimer was higher in STEMI group [(13.23±5.08) μg/L] than control group [(9.40±5.03)μg/L ] (P<0.01).The square root of the rate between D-dimer and fibrinogen was higher in STEMI group (9.11±4.13 ) than control group (5.92±3.35 ) (P<0.01).Conclusion The levels of fibrinogen in patients with STEMI are significantly lower than that of control group, and D-dimer is higher in the former group than in the latter group, suggesting that fresh thrombosis and secondary fibrinolysis exit in STEMI patients at the acute stage.

Objective To detect the mutations of pigment epithelium derived factor (PEDF) gene in a human malignant melanoma cell line A375. Methods A375 cells and control melanocytes obtained from circumcised prepuce were cultured, genomic DNA was extracted from these cells. All eight exons of PEDF gene were scanned by single strand conformation polymorphism analysis ofpolymerase chain reaction products (PCR-SSCP) in both A375 cells and control melanocytes. DNA sequencing was performed for the PCR products separated into electrophoretic bands with altered mobility. Results Altered mobility was observed with SSCP analysis in amplicons of exon 3, 4, 5, 6 and 7, with the most obvious alteration occurred in exon 5 and 6. DNA sequencing revealed mutations in both exon 5 and 6. The common type of mutations was single base-deletion in exon 5 and single base-substitution in exon 6. Conclusion Mutations of PEDF gene may contribute to the development of human malignant melanoma.

Objective To investigate the expression of miRNA-16 in peripheral blood monouclear cells (PBMC)from systemic lupus erythematosus( SLE)patients. Methods Sixteen SLE patients who meet the diagnostic criteria of SLE revised in 1997 American rheumatology and 12 healthy individuals were selected as our subjects. Their peripheral blood were sampled. Total RNAs were extracted and purified. The level of miRNA-16 was determined by quantitative reverse transcription PCR( qRT-PCR). U6 was used as housekeeping control. The amount of target miRNA was normalized relative to the amount of U6(ΔCt =ΔCt miRNA-ΔCtU6 ). Relative expression levels were expressed as 2-ΔCt . Results The expression level of miRNA-16 in the SLE patients was 919. 87 ± 715. 45,significantly higher than that in the healthy control group(413. 6 3 ± 330. 69;t= -2. 497,P﹤0. 05). And miRNA-16 expression in SLE active group was 1 298. 79 ± 803. 79,significantly higher than that in SLE stable group(540. 95 ± 350. 15;t= -2. 445,P﹤0. 05). The level of miRNA-16 was related with AnuA (r=0. 669,P=0. 005),ESR(r=0. 608,P=0. 012)and SLEDAI(r=0. 530,P=0. 035). Conclusion The expression of miRNA-16 is high in SLE patients and it is related with SLE activity.

Objective To investigate the relationship between single nucleotide polymorphism (SNP) of BARD 1 gene and BRCA1 gene in epithelial ovarian cancer (EOC).Methods Nineteen EOC patients with BRCA1 gene mutation and 50 EOC cases without BRCA1 gene mutation between January 2016 and October 2016 were collected,and all EOC were diagnosed by pathological method.BARD1 gene variants were detected by next generation sequencing (NGS).The SNP of BARD1 gene was analyzed by Pearson linear correlation.Logistic regression analysis was used to research the clinicopathologic features and BRCA1 gene mutation associated with BARD1 gene SNP.Pearson's chi-square test was used to analyze the association between BARD1 gene Val507Met,Arg378Ser and Pro24Ser with different clinicopathologic features and BRCA1 gene mutation risk.Results (1) Eight BARD1 gene variants were found in 69 ovarian cancer patients,in which Val507Met,Arg378Ser and Pro24Ser were common variants,and the rate of mutation were all 54％ (37/69).(2) There was a significant linear correlation among Val507Met,Arg378Ser and Pro24Ser (all P＜0.01).(3) Obvious differences were found in Val507Met,Arg378Ser and Pro24Ser of BARD1 gene between BRCA1+ and BRCA1 (all P＜0.05).(4) No differences were found between BARD1 gene Val507Met,Arg378Ser and Pro24Ser and the clinicopathologic features (all P＞0.05),while obvious differences were found in BRCA1 gene mutation compared to the controls group.The risk of BRCA1 mutation in Val507Met and Arg378Ser were more evident in subjects with negative family history,positive menopause history,negative tubal ligation,onset age (≤60 years old) and sensitivity to platinum-based chemotherapy in EOC (all P＜0.05),while Pro24Ser was only more evident in positive menopause history of EOC (P＜0.05).Conclusions BARD1 Val507Met,Arg378Ser and Pro24Ser are the common genotypes,which are associated with BRCA1 mutation in EOC.The family history,menopause history,tubal ligation,onset age and sensitivity to platinum-based chemotherapy have effects on BARD1 SNP in the risk of BRCA1 gene mutation.

This study was aimed to discuss cellular mechanism of anti-liver fibrosis by acupuncture on acupoint and connective tissues. Rats were divided into five groups, which were the normal group, liver fibrosis model group (12 week), liver fibrosis model group(20 week), acupoint acupuncture group, and connective tissue acupuncture group. The observation was made on morphology of liver in various groups by HE stain and Mallory stain. Concentrations of TG, HA, LN and PC-Ⅲin serum were also detected. Mesenchymal stem cells (MSCs) were intervened by serum from each group to observe MSCs proliferation and differentiation. The results showed that the serum level of model group(12 week) was significantly different from other groups. And the same results were found in the inspection of morphology. In the normal group there were no cell expressing albumin. In other groups, MSCs can express albumin. It was concluded that the serum of normal group cannot make MSCs transform into hepatocyte-like cell. The serum of other groups can make MSCs transform into hepatocyte-like cell. It was concluded that both hepatic fibrosis and acupuncture can induce MSCs differentiation.

AIM:To explore the mechanism by which over-expression of enhancer of zeste homolog 2 (EZH2) in a panel of gastric cancer cell lines is involved in tumorigenesis of gastric cancer .METHODS: Real-time PCR and Western blot were employed to examine the mRNA and protein levels of EZH 2, respectively.MTS assay, cell migration and soft agar assay were performed to investigate the role of EZH 2 in the regulation of stomach cancer behaviors .The effect of EZH2 on NF-κB target gene expression was determined by Luciferase reporter and real-time PCR.Co-immunoprecipitati-on was used to analyze the interaction of EZH 2 and p65 in HEK293T cells.RESULTS: The expression levels of EZH2 were significantly increased in the gastric cancer cells compared with normal gastric epithelial cells .Pharmacological inhibi-tion by DZNep or knockdown of EZH2 significantly compromised AGS and SNU-16 cell activity , cell migration and anchor-age-independent cell growth.Moreover, siRNA knockdown of EZH2 impaired NF-κB downstream targets, such as IL-8, CXCL5 and CCL20.In addition, the interaction of EZH2 and p65 was detected.CONCLUSION: EZH2 mediates the growth of gastric cancer cells through the regulation of NF-κB downstream gene expression .