Objective: To investigate the effects of selective inhibition of HER 2 expression by Newcastle disease virus to the proliferation of human gastric adenocarcinoma cell line BGC-823. Methods: The expression of HER 2 mRNA and protein in Newcastle disease virus-infected gastric adenocarcinoma cells was determined by RT-PCR and Western blotting. The inhibitory effect of Newcastle disease virus on proliferation of BGC-823 cells were assessed by MTT assay. Apoptotic rate of BGC-823 cells was measured by flow cytometry (FCM). Results: The infection of BGC-823 cells with Newcastle disease virus successfully knocked down the expression of HER 2 at mRNA and protein levels. Down-regulation of HER 2 gene inhibited the proliferation and increased the apoptotic rate of BGC-823 cells compared with the control group (P < 0.01). Conclusions: Infection with Newcastle disease virus efficiently killed BGC-823 cells and induced apoptosis. The mechanism may be due to the inhibition of HER 2 gene expression in BGC-823 cells.

Objective To compare the clinical efficacy and safety of esomeprazole in treatment of elderly and young patients with gastric ulcer.Methods 120 cases of elderly patients with gastric ulcer and 95 cases of young and middle-aged patients with gastric ulcer were selected this study.Two groups of patients were treated with amoxicillin and clavulanate potassium dispersible tablets 0.457 g,tinidazole tablets 0.5 g and esomeprazole magnesium enteric coated tablets 20mg orally,once daily treatment 1 week for a course of treatment,1 week after continue to every morn-ing fasting taking esomeprazole 20mg,1 times/D,treatment for 3weeks.The clinical curative effect,Hp clearance rate and incidence of adverse reactions between two groups of patients after treatment were compared.Results The total effective rate in the treatment of elderly group patients (87.50%)compared with young and middle -aged group (92.63%),there was no significant difference (χ2 =1.52,P>1.52).Elderly group of patients with helicobacter pylori clearance rate (71.67%)compared with young and middle-aged group (76.84%),there was no significant difference (χ2 =0.74,P>0.74).The incidence of adverse reactions (8.33%)of elderly group had obvious differ-ences by comparing with young and middle -aged group (2.1 1%),and the difference was statistically significant (χ2 =3.90,P<0.05).Conclusion Application of esomeprazole based triple therapy in the treatment of the elderly and young people in the gastric ulcer could heal ulcers and eradicate Hp,but young and middle -aged patients is superior to the elderly group in terms of adverse reactions.

Objective To investigate the expressions and correlations of Kiss-1 and matrix metalloproteinases-9 (MMP9) proteins in the colorectal cancer (CRC) tissues of patients with synchronous colorectal liver metastasis (SCRLM),and the association with the clinicopathologic factors and prognosis of patients.Methods The retrospective case-control study was adopted.The clinicopathological data of 96 patients with SCRLM and 69 patients with CRC and no metastasis who were admitted to the Eastern Hepatobiliary Surgery Hospital of the Second Military Medical University from January 2000 to May 2013 were collected.The 96 CRC tissues and 50 adjacent normal tissues (distance from resection margin ≥ 5 cm) were collected from 96 patients with SCRLM,and 69 CRC tissues were collected from 69 patients with CRC and no metastasis.Expressions of Kiss-1 and MMP9 protein were detected by immunohistochemistry (IHC).The follow-up of outpatient examination and telephone interview was performed to detect survival of patients till August 2014.Comparison of count data and correlation between expressions of Kiss-1 or MMP9 protein and clinicopathological factors were analyzed by the chi-square test and Fisher exact probability.Survival curve was drawn using the Kaplan-Meier method,and survival analysis was done using the Log-rank test.Correlation analysis was done by the Pearson correlation.Results Expression of Kiss-1 protein was located in the cytoplasm of tissue cells.The positive expression rates of Kiss-1 protein in CRC tissues of patients with SCRLM and with CRC and no metastasis and in adjacent normal tissues were 24.0％ (23/96),43.5％ (30/69) and 52.0％ (26/50),respectively,with a significant difference among the 3 tissues (x2 =14.307,P ＜ 0.05) and no significant difference between CRC tissues of patients with CRC and no metastasis and patients with SCRLM (x2 =0.845,P ＞ 0.05).The positive expression rate of Kiss-1 protein in CRC tissues of patients with SCRLM was significantly different from that in CRC tissues of patients with CRC and no metastasis and in adjacent normal tissues (x2 =0.702,11.594,P ＜ 0.05).Expression of MMP9 protein was located in the cytoplasm of tissue cells.The positive expression rates of MMP9 protein in CRC tissues of patients with SCRLM and with CRC and no metastasis and in adjacent normal tissues were 67.7 ％ (65/96),62.3 ％ (43/69) and 36.0％ (18/50),respectively,with a significant difference among the 3 tissues (x2=14.203,P ＜0.05) and no significant difference between CRC tissues of patients with CRC and no metastasis and patients with SCRLM (x2=8.038,P ＞ 0.05).The positive expression rate of MMP9 protein in CRC tissues of patients with SCRLM was significantly different from that in CRC tissues of patients with CRC and no metastasis and in adjacent normal tissues (x2 =13.475,13.475,P ＜ 0.05).The positive expression rates of Kiss-1 protein in CRC tissues of patients with SCRLM were 66.7％,21.9％ and 17.6％ in the high-,mederate-and low-differentiated tumor,50.0％,28.6％ and 17.5％ in the muscular layer of tumor invasion,outside of serosa and serosal layer,44.0％ and 16.9％ in patients with and without lymph node metastasis,respectively,showing significant differences among the tumor differentiation degree,depth of tumor invasion and lymph node metastasis (x2=6.546,6.172,7.453,P ＜0.05).The positive expression rates of MMP9 protein in CRC tissues of patients with SCRLM were 25.0％,66.7％ and 76.2％ in the muscular layer of tumor invasion,outside of serosa and serosal layer,44.0％ and 76.1％ in patients with and without lymph node metastasis,respectively,showing significant differences between the depth of tumor invasion and lymph node metastasis (x2 =12.094,8.690,P ＜ 0.05).All the 96 patients with SCRLM were followed up for a median time of 68 months (range,12-176 months).The median overall survival time,median tumor-free survival time,5-year cumulative survival rate and 5-year tumor-free survival rate were 31 months,26 months,69.6％ and 26.1％ in patients with SCRLM and positive expression of Kiss-1 protein and 26 months,19 months,24.7％ and 12.3％ in patients with SCRLM and negative expression of Kiss-1 protein,respectively,showing significant differences between the overall survival and tumor-free survival (x2=16.578,14.436,P ＜ 0.05).The median overall survival time,median tumor-free survival time,5-year cumulative survival rate and 5-year tumor-free survival rate were 31 months,19 months,24.6％ and 12.3％ in patients with SCRLM and positive expression of MMP9 protein and 28 months,16 months,58.1％ and 22.6％ in patients with SCRLM and negative expression of MMP9 protein,respectively,showing significant differences between the overall survival and tumor-free survival (x2=14.073,8.532,P ＜0.05).Of 96 patients with SCRLM,there were 23 patients with positive expression of Kiss-1 protein (10 with positive expression of MMP9 protein and 13 with negative expression of MMP9 protein) and 73 with negative expression of Kiss-1 protein (55 with positive expression of MMP9 protein and 18 with negative expression of MMP9 protein),with a negative correlation between expressions of Kiss-1 protein and MMP9 protein (r =-0.291,P ＜ 0.05).Conclusions The reduced expression of Kiss-1 protein and elevated expression of MMP9 protein are closely associated with invasion and metastasis of CRC and prognosis of patients.A combination detection of Kiss-1 and MMP9 proteins is expected to become a marker for predicting the prognosis of patients with SCRLM based on the negative correlation between them.

Objective To investigate the chnical effect of modified transforaminal lumbar interbody fusion (TLIF) on the treatment of lumbar degenerative disease. Methods Sixty-two patients with lumbar degenerative disease were treated by the modified TLIF from June 2007 to May 2009. The preoperative diagnosis was lumbar intervertebral disc herniation with spinal instability (28 cases), lumbar intervertebral disc herniation with lumbar stenosis (27 cases ), degenerative spondylohsthesis (7 cases ). Forty-eight cases were single-level and 14 cases were two-level. The patients were evaluated by observing the fusion rate and comparing the visual analog score( VAS ) and Japanese orthopaedics association (JOA) score of preoperation with those of postoperation. Results All the patients were followed up from 15 to 30 (22.77 ± 3.82)months,no nerve injury,leakage of cerebralspinal,infection,the broken of pedical screws and other complications. The fusion rate of segment was 96.8% at the follow-up after 1 year postoperatively. Judgement by JOA score,the rate of improvement was 93.5%(58/62),excellent in 34 cases,good in 24 cases,fair in 4 cases. The postoperative value of V AS and JOA score were higher than those of preoperation (P ＜ 0.05 ), the values when follow-up of 3 months was performed had no statistic al difference with those of final follow-up (P＞0.05). Conclusion The modified TLIF with fully decompression while reducing the accessing spinal canal complications have good clinical efficacy in treating lumbar degenerative disease.

ObjectiveTo explore the clinical outcomes of posterior lumbar interbody fusion using BTwin expandable spinal spacer with microendoscopic discectomy (MED) for lumbar disc herniation accompanying degenerative instability.MethodsFrom March 2006 to May 2010,87 patients with lumbar disc heniation (only one level) accompanying degenerative instability were managed with posterior lumbar interbody fusion using B-Twin with MED,includeing 49 males and 38 females with an average of 47.6 years(range,37-65).Objective level located in L3,4 in 2 cases,L4,5 in 43,and L5S1 in 41.The patients were treated with single BTwin(Single group,n=51) and double B-Twin(Double group,n=36).Clinical outcomes were evaluated with surgical time,blood loss,visual analogue scale (VAS) scores,Oswestry disability questionnaire (ODI),and the pre- and post-operative disk space heights.ResultsThe patients were followed up for an average of 35.8months (range,12-46).All the patients felt the low back pain and radiation pain disappeared or relieved apparently.The mean preoperative ODI and VAS scores decreased from 78％±3％ to 18％±3％,and (8.70±11.3)to (0.65±10.48) at the final follow-up respectively.Disc space increased from a pre-operative height of (8.76±1.3) mm to a post-operative of (11.8±0.6) mm.ODI,VAS and the disk space heights in all patient showed statistical significance,which revealed no statistical significance between the two groups.However,the operation time,blood loss were statistical difference between the two groups.All the patients achieved solid union or probable union at a mean time of 5.6 months (range,3.9-8.6).ConclusionPosterior lumbar interbody fusion using B-Twin with MED can obtain satisfactory outcomes in the treatment of lumbar disc herniation accompanying degenerative instability.Single B-Twin can get similar clinical outcomes,but shorter surgical time,less blood loss,and less medical costs.

Objective To detect the levels of CD4+CD25HiCD127Low regulatory T cells (Treg) in the peripheral blood and its clinical significance in patients with esophageal cancer. Methods The levels of Treg in the peripheral blood were detected by three-color flow cytometry (FCM) in 80 patients with esophageal cancer and 20 healthy controls. Among the 80 patients, 30 patients were also further studied for preoperative and postoperative comparison after operation. The clinical and pathological data of each patient were collected and analyzed for the correlation with the Treg levels. Results The level of Treg in the peripheral blood of the control group was lower than that of the esophageal cancer patients [(3.36±1.14) % and (5.70±1.96) %, respectively], with significant difference (P <0.01). The levels of Treg in the peripheral blood was higher in the patients with metastasis of lymph node (n=40) than that in the patients without metastasis of lymph node (5.96±1.36) % and (4.23±1.18) %, respectively] (n=30), with significant difference (P <0.01). The levels of Treg in the peripheral blood of the patients were negatively correlated with their TNM classification. As the TNM classification advanced, the level of the Treg in the peripheral blood increased. Conclusion The levels of Treg in the peripheral blood of the patients with esophageal cancer are significantly higher than that of the healthy subjects, which is correlated with the clinical and pathological conditions. The development of esophageal cancer may relate with suppression of immune function.

Objective To study the clinical efficacy of intra-operative implantation of I125 seeds to treat advanced pancreatic cancer.Methods We retrospectively analyzed the clinical data of 28 patients who underwent intra-operative implantation of I125 between January 2009 and June 2010 to treat advanced pancreatic cancer.Patients who received conservative treatment (n =136) at the same period were used as the control group.Results The mean tumor diameter was (5.7 ± 1.7) cm.The average number of implanted seeds were 50.There were no patients who suffered from pancreatic fistula or post-operative bleeding,and no patient died from the treatment.Twenty-five patients were regularly followed up,and the follow-up rate was 85.7％.The survival rates at one month,half a year and one year were 100％,70.8％ and 26.9％,respectively.The average survival time was (9.9 ± 1.4) months.The survival data were significantly higher than that in the control group.Conclusion Intra-operative implantation of I125 seeds was an efficacious treatment for patients with advanced pancreatic cancer.

Objective To investigate the survival benefit of patients with esophageal squamous cell carcinomas who recieved postoperative chemotherapy of tegafur combined with FT-207 radiotherapy.Methods Data from 126 patients with esophageal squamous were analyzed who undergone radical resection from January 2008 to December 2010,consisting of 92 patients underwent surgery alone and 34 patients took oxaliplatin combined with tegafur postoperatively (oxaliplatin 130 g/m2,d1,tegafur 500 mg/m2,d1-5,21 d for a cycle,every patient received at least two cycles).Results The 1-year survival rate and 3-year survival rate was 93.5 ％ and 75.0 ％ in the surgery alone group,was 97.1％ and 76.2 ％ in the surgery plus postoperative chemotherapy (P =0.590).There was no significant differences in survival in the two groups,even with Coxregression multivariate analysis and with stratifications of gender,age,tumor location,degree of cell differentiation,invasion depth,lymphatic metastasis and TNM stage.Conclusion Postoperative adjuvant chemotherapy with oxaliplatin combined with tegafur has not significantly improve the survival rate of patients with esophageal squamous cell carcinomas undergoing radical resection.It is still lack of an effective project for postoperative adjuvant chemotherapy for esophageal cancer,and it is necessary for further study.

BACKGROUND:Growth differentiation factor 5 (GDF5) has been shown to play a crucial role in the development of chondrocytes via different regulatory mechanisms.
OBJECTIVE:To explore the effect of GDF5 on the chondrogenic differentiation of adipose-derived stem cel s (ADSCs).
METHODS:ADSCs in passage 4 isolated from Japanese White rabbits were cultured in the medium containing 0 (blank control group), 10, 50, 100, 150 and 200μg/L, respectively. The morphological changes were observed, and the optimal concentration of GDF-5 was screened, and its round coverslips at 1, 2 and 3 weeks of culture were selected to undergo immunocytochemistry, toluidine blue staining and immunofluorescent staining.
RESULTS AND CONCLUSION:The growth of ADSCs was stable in the medium containing 10 and 50μg/L GDF5, while apoptotic cel s appeared after induction with 200μg/L GDF5. In the medium containing 100 and 150μg/L GDF5, some spindle-shaped cel s changed into irregular shape, and became round or oval after 7-10 days of culture. The optimal concentration of GDF5 was 100μg/L. The cel s transfected by 100μg/L GDF5 were positive for type II col agen obviously and with blue-stained nucleus. The transfected cel s were positive for toluidine blue, and metachromatic granules were visible in the cytoplasm. The proteoglycan mRNA expression of the transfected cel s was significantly increased, and reached the highest at 3 weeks. These results suggest that GDF5 promotes the chondrocytic differentiation of ADSCs.

Objective The relationship between fever and the recent curative effect of transcatheter arte -rial chemoembolization ( TACE) and the related factors of fever after transcatheter arterial chemoembolization in large hepatocellular carcinoma is discussed in this paper .Methods One hundred and twenty patients with large liver cancer were divided into two groups according to the fever after TACE .The fever in group A ,and there was no fever in group B after TACE .The changes of the lesions in the two groups were compared after the first inter-ventional treatment .The factors affecting the fever after TACE were analyzed .Results The CT was performed at about one and half month after the first intervention .The curative effects of A and B were evaluated by RECIST criteria.Two groups of CR,PR,SD,PD were 0,11.11%,71.11%,17.78%and 0,0,33.33%,66.67%,respec-tively.The difference of the efficiency of OR was statistically significant (P=0.049).The probability of fever of four types of iodine oil deposits are as follows:100%,93.33%,81.93%,0.Blood supply type,middle and severe hepatic arteriovenous fistula,the use of gelatin sponge,tumor necrosis,and the use of iodine oil were more than 25ml may be factors affecting postoperative fever .Conclusion The clinical symptoms of fever after TACE sug-gest that the lesion is well embolization and iodine oil deposit is good ,and the lesion is not easy to progress ,and short-term curative effect is better .The analysis of the factors that affect the postoperative fever may help to eval-uate the curative effect of patients with large hepatocellular carcinoma .