Objective To investigate the inhibitory effects and mechanism of ginsenoside Rg3 on vasculogenic mimicry of human breast cancer MCF-7 cell line. Methods The MCF-7 cells at logarithmic growth phase were obtained, and were cultured with different concentrations (0, 20, 50, 100, 150 and 300 mg/L) of ginsenoside Rg3. Cells cultured without Rg3 were served as controls. The IC50 were determined by CCK8 assay and anti-angiogenic effects were performed for testing the potential of tube-like structure (TLSs) formation. The expression levels of VEGF-A, MMP 9 and HIF-1αwere detected by Western blotting and real-time PCR. The secreted contents of VEGF-A and MMP9 were detected by enzyme linked immunosorbent assay (ELISA). Results The ginsenoside Rg3 suppressed the proliferation of MCF-7 cells in a dose-dependent manner, in which IC50 was (115.34±8.50) mg/L. The formation numbers of TLSs in MCF-7 cells were significantly inhibited by Rg3 in concentration dependent manner in 50 mg/L, 100 mg/L and 150 mg/L for (19.0 ± 1.0), (15.0 ± 1.5), and (10.0±1.7) vs. controls (22.0±1.8, F=150.805, P<0.05). The mRNA and protein expression levels of VEGF-A, MMP9 and HIF-1αprotein were inhibited by 50 mg/L,100 mg/L and 150 mg/L Rg3 vs. controls (P<0.05). Meanwhile, the contents of VEGF-A in MCF-7 cell supernatant was down-regulated by 50 mg/L,100 mg/L and 150 mg/L Rg3 vs. controls (P<0.05). The contents of MMP-9 in MCF-7 cell supernatant was down-regulated by 100 mg/L and 150 mg/L Rg3 vs. controls (P<0.05). There was no significant difference in MMP-9 expression between 50 mg/L group and control group. Conclusion The ginsenoside Rg3 is able to inhibit the vasculogenic mimicry of MCF-7 cells, which may be related with the down-
regulation of VEGF-A, MMP9 and HIF-1α.

Objective To detect mitochondrial gene 3243 A to 1507 Chinese and analyze their clinical characteristics.Methods Classical PCR－ RFLP was used to detect the mutation and statistical analysis was performed on the data after stratification in accordance with presence or absence of diabetes.Results (1)In this study,prevalence of mitochondrial gene 3243 A to G mutation was 1.16～ 1.20％ .(2)Compared with MDM(mitochondrial diabetes),M－ NGT(normal glucose to lerance with mutation)showed no significant difference in body fat parameters,blood lipid and C－ peptide except for early onset and hearing loss(P=0.0028).(3)Compared with type 2 DM,MDM presented characteristics of early onset,weight loss,hearing loss,islet cell function decrease and maternal hereditary.Conclusion Follow－ up should be given to the carrying the mitochondrial gene 3243 A to G mutation but presenting generally normal clinical manifestation in order to give the patient in－ time diagnosis and treatment.

Objective To compare the clinical outcomes between two different femur rotating osteotomy methods for kneeling ability recovery after total knee arthroplasty (TKA).Methods From January 2012 to December 2014,88 patients underwent TKA were selected for a retrospective study and were divided into two groups based on the methods to determine femoral rotation.Forty-eight patients were in measured resection group,while 40 patients in gap balancing group.The patients in both groups underwent fixed-bearing tibia prosthesis.There were no statistical significance between the two groups in gender,age,BMI and knee varus angle (P＞0.05).The knee varus angle,ROM,Oxford knee score (OKS) and American Knee Society (KSS) knee score were collected to assess malformation correction,kneeling ability and functions at pre-operation,one and two years postoperatively.Results The operation duration and blood loss in measured resection group were 80±19 min and 348±121 ml,while these data in gap balancing group were 82±23 min and 315 ± 100 ml respectively (P＞0.05).Patients in measured resection group were followed up 24-59 months (mean 43± 11 months),while the followed-up duration in gap balancing group was 25-58 months (mean 47±10 months).No major complications such as infection loosen and instability were occurred.Varus angles in measured resection group at postoperative 1 year and 2 year postoperative were 1.2°±0.4° and 1.0°±0.2° respectively,while those in gap balancing group were 0.9°±0.2° and 0.8°±0.3° (P＞0.05).The scores of the seventh item of OKS in measured resection group at 1 year and 2year follow-ups were 2.79±1.02 and 2.75± 1.03 respectively,while those in the gap balancing group were 1.90±0.85 and 1.80±0.83 (P＜0.01).ROM in the measured resection group at 1 year and 2 year postoperative were 102.08°± 15.60° and 102.08°±15.60° respectively,while those in the gap balancing group were 112.50°±18.32° and 113.00°±18.09° (P＜0.05).KSS in measured resection group at postoperative 1 year and 2 years were 154.63±31.12 and 154.63±31.26 respectively,while those in the gap balancing group were 170.55±22.67 and 173.45±22.52 (P＜0.05).Conclusion The method of measured resection and gap balancing to confirm femoral rotation during TKA can both achieve favorable kneeling ability and clinical outcomes,while gap balancing show superiority on kneeling ability recovery,ROM and clinical outcomes at 2-year postoperative improvement.

Objective:To search for the optimum formula for the self emulsification of evening primrose oil. Methods: Through solubility experiment, orthogonal screen and drawing phase diagram, taking the degree of emulsifying, the volume of the rest oil and emulsion particle size as parameters,the oil, non ionic surfactant and flux for the optimum formulation were screened. Results: In the formulation of evening primrose oil, taking Tween 85 as the non ionic surfactant and propylene glycol as the co surfactant can get the best effect of emulsifying. Conclusion: The optimum formula for self emulsification of evening primrose oil is evening primrose oil, Tween 85 and propylene glycol,with their proportion being 5∶7∶3.

Objective To estimate the effect of microRNA (miRNA) let-7 expression on human esophageal squamous cell carcinoma(ESCC) and the relationship between let-7 level and clinicopathological parameters. Methods ESCC cell line (Eca109) was transfected with let-7 or its inhibitor by RNAi and cell transfection techniques. Normal cultured Eca109 cell was served as negative control. The proliferation of Eca109 cell was detected by MTT. The expression of let-7 in Eca109 cells and 45 paired ESCC tissues and corresponding para-cancerous tissues were measured using real-time quantitative polymerase chain reaction (qRT-PCR). The relationship between let-7 level and clinicopathological parameters in patients with ESCC was analyzed. Results The A value of let-7 in Eca109 cells transfected with let-7 was lower than negative control (P=0.005), while it was higher in Eca109 cells transfected inhibitor than that in negative control 72 hours after transfection. In comparison with negative control, the expression of let-7 in Eca109 cells transfected with let-7 was increased 33% (1.33 vs 1.00,P=0. 039) and it was decreased 50% in Eca109 cells transfected with inhibitor (0.50 vs 1.00,P=0. 014). The ratio of let-7 expression in ESCC tissue and para-cancerous tissue was 0.66 ± 0.47 with significant differece (P= 0.001). Moreover, The level of let-7 expression in Han patients with ESCC was lower than Kazakh patients with ESCC (0.48±0.43 vs 0. 88±0.51,P=0. 019). The level of let-7 expression in poorly differentiated ESCC tissue was lower than well differentiated ESCC tissue (0.42±0.30 vs 0.84±0.38,P=0. 015). The level of let-7 expression in patients with lymph node metastasis was lower than those without lymph node metastasis (0.50±0.35vs 0. 80±0.52,P=0. 032) . Conclusion It is demonstrated that let-7 can inhibit the carcinogenesis and development of ESCC. The level of let-7 expression is associated with cell differentiation,lymph node metastasis and nationalities.

OBJECTIVE To study the cause of bacterial infection of ventilator-associated pneumonia(VAP) in intensive care unit(ICU) and summarize effective methods to prevent and control the infection.METHODS Epidemiologic study on 300 patients with VAP in ICU from Dec 1,2003 to Jul 13,2006.Preventing and controlling strategy was as follows.RESULTS Pathogenic bacteria of VAP in ICU mostly were multidrug-resistant ones,of which the G-were 56.3%,G+ were 23% and fungi were 13.7%.CONCLUSIONS To control VAP in ICU proper technique and method are important.Management of hospital infection and related training of staff in ICU are the basic way.

Chemokines and chemokine receptors involve in biological activity and pathological process widely.It has been reported that many tumor cells overexpress functional chemokines.In lung cancer,chemo-kines involve in its proliferation,apoptosis,invasion and metastasis.Chemokines and chemokine receptor over-expressed in lung cancer can be used as specific target for pertinent anti-tumor treatment.

Objective To perform a risk factor analysis of central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO),and compare the difference in risk factors between CRVO and BRVO.Methods Retrospective observational casecontrol study included 46 CRVO patients,33 BRVO patients and 79 control subjects with senile cataract or refractive error,the risk factors and blood lipid spectrum analysis were performed and compared.Results Multivariate linear regression analysis showed that higher serum levels of homocysteine (P ＜ 0.000 1),total cholesterol (P =0.003 0),lipoprotein (a) (P =0.027 0),hypertension (P =0.022 0) and shorter axial length (P ＜0.000 1) were significantly correlated with CRVO.BRVO was associated with higher serum levels of homocysteine (P ＜0.000 1),total cholesterol (P =0.008 0),hypertension (P =0.002 0),body mass index (P =0.004 0) and shorter axial length (P =0.001 0).There was no significant difference in risk factors between CRVO and BRVO patients on multivariate analysis.Conclusion Multiple systemic (hyperlipidemia,hypertension and hyperhomocystinemia) and ocular (shorter axial length) risk factors are associated with both CRVO and BRVO,but these risk factors are not different between CRVO and BRVO.

Abstract] Objective To analyze the molecular characteristics of the full-length genome of a new-ly isolated genotypeⅤJapanese encephalitis virus (JEV) strain (XZ0934) in China and the first genotypeⅤJEV strain ( Muar) isolated in Malaya 60 years ago.Methods Several softwares including ClustalX 2.0.9, DNAStar 7.1, Bioedit 7.2.5 and MEGA6.06 were used to conduct sequence alignments and phylo-genetic analysis.Results The full-length genomes of XZ0934 strain (isolated in Tibet, China in 2009) and Muar strain (isolated in Malaya in 1952) were composed of 10 983 and 10 988 nucleotides, respective-ly.The XZ0934 strain was highly similar with the Muar strain showing the homology of 90.6%in nucleotide (nt) and 98.3%in amino acid (aa).The open reading frame (ORF) of the two genotype Ⅴ JEV strains encoded 3433 aa while the ORF of other four genotypes (Ⅰ-Ⅳ) (10 299 nt) encoded 3432 aa.Compared with JEV strains of other genotypes, a serine were inserted into the NS4A gene of JEV strains genotype Ⅴand 10-14 nucleotides were inserted into the downstream of the ORF stop codon in 3′-untranslated region. Phylogenetic analysis of E sequences of all JEV strains genotypedⅠ-Ⅴrevealed that in the cluster of geno-typeⅤ, XZ0934 and 10-1827 ( isolated from mosquitoes in South Korea, 2010) stains formed a branch and were divergent from that of Muar strain indicating that there were molecular genetic differences among geno-typeⅤJEV strains after a 60 years hiatus.Conclusion The two genotypeⅤJEV strains showed high lev-els of identity in nucleotide sequences and amino acid sequences with serine insertion in the NS4A gene. However, there were molecular genetic differences between genotypeⅤJEV strains isolated after a 60 years hiatus.

Objective To evaluate the muscle mass in elderly patients with inguinal hernia using CT scan.Methods 30 male (age 70-90 years) hospitalized patients scheduled to receive surgery for inguinal hernia were selected into study group, 10 male health volunteers (40-50 years) were involved in adult control group, and 10 men of the same age as the study receiving annual physical examination were enrolled as elderly control group.General information were recorded;CT scanning of the stomach muscles and thigh muscles were conducted, and the muscle area was calculated using a special software.Results The index of grip strength in the study group was significantly lower than the adult control group [(36.44 ± 14.15) kg vs.(77.30 ± 22.69) kg, P =0.001], the calf circumference in the study group was significantly less than the adult control group [(25.18 ±2.31) cm vs.(27.62 ±2.33) cm, P =0.006].There was no significant difference in L3 abdominal area, subcutaneous fat area, abdominal fat area, and vertical spinal muscular volume between the study group and the adult control group;while the L3 abdominal muscle area and vertical spinal muscular mass was significantly less in the study group than in the adult control group [(12 094.23 ± 1 970.30) mm2 vs.(17462.00±1 600.58) mm2, P=0.001;(1 642.60±266.90) mm2 vs.(2 003.50±350.91) mm2,P =0.007].L3 skeletal muscle index of the study group was 50.64 ±7.52 and 66.7％ (20/30) of the study group had sarcopenia (≤52.4％).The CT findings of abdominal muscle of the study group were not significantly different from those of the elderly control group.The thigh muscle mass in the study group was significantly less than that in the control group (P =0.001), but there was no significant inter-group difference in thigh fat and femur areas (P ＞ 0.05).Conclusion The muscle mass and strength in elderly patients with inguinal hernia are significantly lower than those of adult controls, for which CT scan can be applied for assessment.