Objective To compare the efficacy of acrossing the injured vertebra percutaneous pedicle screw fixation and traditional open surgery for Magerl A thoracolumbar fractures.Methods Retrospective analysis 56 patients with single segmental Magerl A thoracolumbar fractures without neurological symptoms were stabilized,including percutaneous fixation in 26 cases and open fixation in 30 cases.The operation time,intraoperative,blood loss,incision length,sagittal Cobb angle,height of injured vertebral,VAS,ODI,were compared between 2 groups.Results The precutaneous group less surgical blood loss,incision length and postoperative go to the fields time than the open group (P ＜ 0.05).There were improvements in Cobb angle and anterior height in two groups (P ＜ 0.05).The precutaneous group had lower VAS and ODI scores postoperation (P ＜ 0.05).The fracture vertebral front height and Cobb angle had significantly loss at final follow up than on the third day postoperation (P ＜ 0.05).Conclusions The percutaneous pedicle screw fixation can achieve similar effect in the treatment of Magerl A thoracolumbar fractures without neurological symptoms than open surgery,with less iatrogenic injury,less intraoperative blood loss and quick recovery for patients.

0.05), respectively. CONCLUSION: Scheme B is the preferable one in cost-effectiveness,however,Scheme C is the best one by comprehensive comparison.

Objective To explore and clarify the clinical features and management of patients with Castleman disease.Methods The clinicopathological features and therapeutic method of 65 patients with Castleman disease admitted to our hospital continuously from 2005 to 2012 were analyzed retrospectively.The mean follow-up time for the entire series was 40 (15-71) months.Results In contrast to Localized Castleman disease(LCD),Multicentric Castleman disease (MCD) patients were relatively older and exhibit various symptoms and abnormal laboratory tests.We found 44 tumor in LCD group.LCD ones,most of which were hyaline vascular (33/42,78.6％),were more likely originated in retroperitoneum,enterocoelia(10/44,22.7％) or mediastinum(10/44,22.7％).The initial treatment for LCD patients was complete surgical resection and all patients are current alive with no evidence of recurrence.MCD ones always accompanied by fever(9/23,39.1％),anemia(9/23,39.1％)and splenomegaly,and most of MCD patients were plasmacytic variants(14/23,60.9％) or mixed cellular variants (5/23,21.7％).We found 66 tumor in MCD group and they were more likely originated in neck (16/66,24.2％) and groin area (12/66,18.2％).Surgery combined with CHOP-like chemotherapy or CHOP-like chemotherapy alone was the mainstream treatment for MCD ones.21 patients achieved complete remission or partial remission,and only 2 patients died of lung infection.Whether patients could tolerate long-term chemotherapy or not was an important prognostic factor.Conclusions LCD patients had no typical clinical symptoms and could be cured by surgery.Most of MCD patients always had a good prognosis after receiving CHOP-like chemotherapy.

Objective To explore the correlation of S100 protein with the prognosis of patients with primary retroperitoneal liposarcoma. Methods Analyzed the clinical data about 108 patients with primary retroperitoneal liposarcoma managed with surgery from January 2009 to June 2014. All patients were followed up. Patients were divided into S100-positive group(58 patients) and S100-negative group (50 patients) according to the immunohistochemical staining results. The overall survival time and all clinical data between two group were compared. Results All patients with primary retroperitoneal liposarcoma received radical surgical resection for the first time. The overall 5-year recurrence rate were 88.9%(96/108), and the median recurrence time was 32.7 months. The 1-year, 2-year, and 5-year recurrence rates of the S100- positive group were 25.9% (15/58), 53.4% (31/58), 96.6% (56/58), respectively, and the median recurrence time were 26.2 mouths. The 1-year, 2-year, and 5-year recurrence rates of the S100-negative group were 10.0%(5/50), 36%(18/50), 80.0%(40/50) and the median recurrence time were 40.0 mouths. Log-rank test showed that S100 protein expression was significantly associated with postoperative recurrence rates (c2=9.931, P=0.002) and survival time (c2=4.571, P = 0.033). The difference between gender, age, removal of the joint organs and tumor size showed no statistical significance on disease special survival (P>0.05). Cox regression analysis showed that S100 protein expression (OR=1.582, 95%CI:1.005-2.491) and histologic subtype (OR=1.531, 95%CI: 1.254-1.870) were independent risk factors of the prognosis of primary retroperitoneal liposarcoma patients. Conclusions S100 protein played a critical role in retroperitoneal liposarcoma carcinogenesis and its expression may be used as a potential survival predictor in patients with primary retroperitoneal liposarcoma.

Objective To investigate clinical effect of in vitro maturation(IVM)of immature oocytes transferred from conventional in vitro fertilization embryo transfer(IVF-ET) cycles.Methods From January 2008 to June 2009.medical documents of 155 infertile patients underwent IVF-ET in the Reproductive Medical Center of Fimt Affiliated Hospital of Wenzhou Medical College were analyzed retrospectively.If more than 20 oocytes were monitored after 5-7 days of ovulation induction or follicular developmental retardation were confirmed after 8-13 days of ovulation induction.according to patients' wish,IVM were transferred in 60 cycles(group A).In the mean time.IVF was continued in 95 cycles (group B).The mean dosage of gonadotropin,the cancel lation rate of cycles,the mean numbers of oocytes retrieved and maturation,the rate of fertilization and excellent quality embryos.pregnancy outcome and the incidence rate of ovarian hyperstimulation syndrome(OHSS)were compared and analyzed.Results The rates of embryo transfer were 92%(55/60)in group A and 63%(60/95)in group B,which showed significant differences (P<0.05).In group A,the mean dosage of the gonadotropin,the mean number of oocytes retrieved,the cleavage rate and OHSS rate were(1030±468)U,10±6,82.2%(231/281)and O,and were(1544±338)U,14±4,94.0%(502/534)and 35%(21/60)in group B,respectively,all data abeve exhibited statistieal difference between two groups(P<0.05).However,the rates of fertilization and excellent quality embryos had no significant differences between two groups(P>0.05).In group A,the rate of clinical pregnancy per transfer was 53%(29/55)and multiple pregnancy was 14%(4/29),and were 47%(28/60) and 32%(9/28)in group B,they all had no significant differences (P>0.05).Conclusion IVM of immature oocytes used in conventional IVF cycles not only obtained a high clinical pregnancy rate,but also reduced gonadotropin using dosage and avoided OHSS completely.

Objective To investigate the impact of hepatitis B virus (HBV) infection on semen parameters,sperm DNA integrity,acrosin activity and sperm-nucleoprotein transition.Methods Semen samples from 527 subjects including 273 hepatitis B surface antigen (HBsAg) positive and 254 HBsAg negative,who sought medical attention and received in-vitro feritilization in reproductive medicine center of First Hospital of Wenzhou Medical University from Jan 2011 to Oct 2012 were collected.Semen parameters,sperm DNA fragmentation index (DFI),sperm-nucleoprotein transition and acrosin activity of both HBsAg-positive and HBsAg-negative subjects were analyzed.Results Semen parameters of both groups were within the normal range,but sperm concentration and percentage of forward moving sperms of HBsAg positive group were significantly lower than those of HBsAg negative group (P=0.000),while percentage of static sperms of HBsAg positive group were significantly higher than that of HBsAg negative group (P =0.000).DFI in HBsAg positive and negative group were (17.85 ± 0.70) ％ and (11.85 ± 0.50) ％,respectively,which was significantly different (t=6.951,P=0.000).Percentage of sperms with normal morphology in both groups were within the normal range,but sperms with neck and tail deformity in the HBsAg positive group was significantly higer than those in HBsAg negative group (all P＜0.05).Acrosin activity of sperms in HBsAg positive group was significantly lower than that in HBsAg negative group (t=3.756,P=0.000).Linear regression analysis indicated that serum HBsAg level was reversely correlated with sperm concentration (r=-0.140,P =0.021),but positively correlated to DFI (r =0.151,P =0.014).Conclusions HBV infection not only affects the routine semen parameters and sperm morphology,but also compromises sperm function including impaired DFI and acrosin activity.However,the impact of anti-HBV agents on sperm quality and male fertility requires further research.

Objective: To compare the efficacy of induction chemotherapy (IC) plus intensity-modulated radiotherapy (IMRT) with that of concurrent chemo-radiotherapy (CCRT) plus adjuvant chemotherapy (AC) for patients with loco-regionally advanced naso-pharyngeal carcinoma (NPC). Methods:Data of 240 patients with loco-regionally advanced NPC were reviewed. These patients were admitted to the Sun Yat-sen University Cancer Center between January 2004 and December 2008. Among the 240 patients, 117 under-went the IC+IMRT and 123 were treated with the CCRT+AC. The IC+IMRT group received a regimen including cisplatin and 5-fluoro-uracil (5-FU). The CCRT+AC group received cisplatin concurrently with radiotherapy and subsequently received adjuvant cisplatin and 5-FU. The survival rates of the patients were assessed by Kaplan-Meier analysis, and the survival curves were compared by Log-rank test. Multivariate analysis was conducted using Cox proportional hazard regression model. Results:The 5-year overall survival (OS), disease-free survival, distant metastasis-free survival, local relapse-free survival, and the nodal relapse-free survival were 78.0%versus 78.7%, 68.9%versus 67.5%, 79.0%versus 77.0%, 91.6%versus 91.0%, and 95.3%versus 93.7%in the IC+IMRT and CCRT+AC groups, respectively. The survival between the two groups exhibited no significant differences. Higher rates of Grades 3 to 4 nau-sea-vomiting (8.1%vs. 1.7%, P=0.023) and leukopenia (9.7%vs. 0.9%, P=0.006) were observed in the CCRT+AC group. Multivariate analysis revealed that N stage and age were significant prognostic factors for the OS of the patients with loco-regionally advanced NPC. Conclusion:The treatment outcomes of IC+IMRT and CCRT+AC were similar. Distant metastasis remained as the predominant mode of treatment failure.

Primary retroperitoneal liposarcoma is a rare low-grade malignant tumor and accounts for approximately 1% of all adult malignancies. Complete gross resection is the most important and maybe only method to cure retroperitoneal liposarcoma. The addition of advanced- modality radiotherapy to surgery for primary retroperitoneal liposarcoma is associated with improved local recurrence-free survival, and the toxic effect is tolerable. Several new drugs, especially targeted drugs, have achieved good efficacy. The aim of this article is to improve the understanding of treatment of primary retroperitoneal liposarcoma. The multidisciplinary therapy model, including surgery, radiotherapy, chemotherapy and targeted therapy, is recommended for patients with retroperitoneal liposarcoma.

Objective:SFRP2 gene is a member of the SFRPs family.The gene is located on chromosome 4q31.3 with 3 exons and 2 introns and first exons have higher density near the island of CpG.Many studies showed that the methylation level of SFRP2 gene and colon cancer,esophageal cancer,gastric cancer and other tumor occurrence relating to,development and prog nosis.This study aims to study the clinical characteristics of CpG SFRP2 promoter island hypermethylation in colorectal cancer and whether there is a certain correlation.Methods:by matrix assisted laser desorption ionization time of flight mass spectrometry for detecting specific CpG island methylation.Methylation status of SFRP2 promoter by Sequenom EpiTYPER was detected in 20 cases of normal tissue of colorectal cancer and tumor tissues.Results:Our study using multiple linear regression analysis in tumor tissue of SFRP2 methylation at promoter Ⅰ and Ⅱ,found that SFRP2 promoter methylation and clinical features of.SFRP2_01_CpG_5 significantly correlated (P=0.018),SFRP2_02_CpG_5 (P=0.018) associated with the location of the tumor,SFRP2_02_CpG_6,7,8,9(P=0.039) and the number of lymph node metastasis of.SFRP2_01_CpG_1.2(P=0.043),SFRP2_02_CpG_16 (P=0.044) correlated with tumor size.Conclusion:we from epigenetic aspects of its promoter CpG methylation level and colorectal cancer clinical and pathological features,found a correlation between clinical and pathological features of colorectal cancer and CpG methylation in its promoter,suggesting that the SFRP2 promoter may be at this stage of colorectal cancer and future biological genetics the progress of the potential surface markers.

Objective To evaluate the therapeutic effect of hepatocyte growth factor(HGF) gene modified placenta-derived mesenchymal stem cells( PMSCs) on limb ischemia in a rabbit model.Methods The placental tissue was digested with enzyme, cultured and passaged.The PMSCs were characterized by surface marker expression.These cells were infected with adenoviral( Ad)-HGF and intramuscular injected for treatment of limb ischemia in a rabbit model.The blood supply of the limb was detected by digital subtraction angiography ( DSA ) and the vessel number was evaluated in histopathological HE staining.Results The results showed that Ad-HGF gene transduction increased the vascular endothelial growth factor ( VEGF ) , basic fibroblast growth factor, bFGF ( bFGF ) and HGF expression in PMSCs. Transplantation of HGF-transduced PMSCs resulted in the increase in vessel density and improvement of blood supply in the rabbit limb ischemia model.Conclusion The therapeutic effect of HGF gene engineered PMSCs on ischemia by enhancing angiogenesis in a rabbit model is evaluated.Transplantation of PMSCs with HGF gene therapy may be a promising strategy for the treatment of ischemia diseases.