Bone marrow-derived mesenchymal stem cells (MSCs) are capable of migrating and homing to brain tumors in vivo and therefore is a promising targeted-delivery vehicle in cancer gene therapy. MSCs are transfected or transducted with the therapeutic genes and achieve stable expression in vitro, then are delivered to the host to exert their therapeutic effects. The Ex Vivo gene transfer of MSCs has been studied in several types of tumors including gliomas, and results were postive. The safety of MSC-based gene delivery remains to be controversial. The interactions between MSCs and host tumor cells need to be investigated.

Pancreatic cancer is one of common malignant tumors in the digestive system.There is still no effective means for the early diag-nosis of pancreatic cancer.As a mixture of oral gland secretion and oral mucosal transudate,saliva contains abundant biological information including microorganisms,proteins,and nucleic acids,which will change when the disease occurs.So saliva can be used for the early diag-nosis of pancreatic cancer.Through summarizing and analyzing the current studies and advantages of its application for early diagnosis,this article suggests that saliva bioinformatics holds promise for the application in the early diagnosis of pancreatic cancer.

Objective To investigate the influence of NS-398, a selective cyclooxygenase(COX)-2 inhibitor, on the proliferation and apoptosis of colorectal cancer cell HT-29, and to explore its potential mechanism. Methods Cultured HT-29 cells were treated with NS-398. MTT assay and flow cytometry were used to measure the proliferation and apoptosis. RT-PCR analysis was performed to measure the level of COX-2 mRNA expression at different time points in HT-29 cells. The expression of prostaglandin (PG)E2,Cyclin D1 and Bcl-2 were measured by ELISA and Western blot, respectively.Results High expression of COX-2 mRNA was detected in colorectal cancer cell line HT-29 and no obvious change of COX-2 mRNA was found after the treatment of NS-398 . NS-398 inhibited the cells proliferation and induced apoptosis in a dose-and time-dependent manner, and resulted in a significant down-regulation of Cyclin D1, Bcl-2 and PGE2.Conclusions Our results show that NS-398 may inhibit the proliferation and induce apoptosis of colon cancer cell lines HT-29 through decreasing expression of Cyclin D1 and Bcl-2 . COX-2 activity rather than its mRNA expression was related to NS-398-mediated pathway on HT-29 cells. This may be a new interfering target of selective COX-2 inhibitor on colon cancer.

Objective To investigate the effect of MMP-9 on severe acute pancreatitis(SAP) associated with lung injury,and the preventive function of MMP-9 inhibitor (BB-94) in SAP associated with lung injury in rats. Methods SD rats were randomly divided into three groups: Shamed-operated groups (control groups,n=10);SAP groups (n=14);SAP with MMP-9 inhibitor preconditioning groups (BB-94 group,n=15). The samples for test of the wet weigh index of lung,serum amylase level,white cell count,the number of cells and protein in bronchoalveolus lavage fluid,histologic scoring of lung injury and MMP-9 in lung were detected 24 hours after SAP models were set up.Results The parameters mentioned above in SAP group were significant higher than those in controll group and BB-94 group (P

Objective To evaluate the significance of enzymologic and morphologic changes of the detrusor muscle after bladder outlet obstruction(BOO).Methods The bladder detrusor muscles of 8 cases of BPH with BOO(BOO group) and another 8 cases of bladder tumor without BOO(control group) were collected.The content of MDA and the activity of SOD,NOS and Ca~(2+)Mg~(2+)-ATPase in both groups were measured,and observed under electron microscope.Results The activities of SOD(20.39?2.02)U/mg Protein,NOS(1.81?0.38)U/mg Protein,Ca~(2+)Mg~(2+)ATPase(1.47?0.43)?mol Pi/mg Protein of the detrusor muscles in control group were significantly higher than those of the detrusor muscles in BOO group(12.77?2.62)U/mg Protein,(1.36?0.22)U/mg Protein and(0.97?0.33)?mol Pi/mg Protein;P

Objective To study the role of MEK2/ERK signal transduction pathway in the development of colorectal cancer. Methods (1)Western blot analysis was performed on cancerous tissues and adjacent colonic tissues in 45 patients with colorectal cancers.(2)Human colorectal cancer cell line SW480 was treated with MEK inhibitor,and then MTT assay was used to measure the SW480 cells proliferation;and the expression of MEK2, p-ERK and C-myc in SW480 cells were measured by western blot. Results MEK2 protein level was increased in colorectal cancer compared with adjacent mucosa (P

Dental Implantation ; methods ; Humans ; Maxillary Sinus ; Oral Surgical Procedures, Preprosthetic ; Pressure ; Sinus Floor Augmentation ; methods

Objective To explore risk factors for coronary artery aneurysms (CAA) in children with Kawasaki disease (KD),and reduce the rate of serious sequelae of cardiovascular diseases.Methods All the patients were diagnosed as KD in Children’s Hospital Affiliated to Medical College of Zhejiang University from January 2009 to January 2014.A total of 679 cases was included,and 42 with concurrent CAA,181 with concurrent coronary artery expansion (CAD),and 456 without coronary artery damage cases (non-coronary artery lesion,NCAL).Coronary artery damage was related to factors such as gender,age,fever,white blood cell count (WBC),hemoglobin (Hb),platelet count (PLT),erythrocyte sedimentation rate (ESR),C-reactive protein (CRP),alanine aminotransferase,serum potassium,plasma amino terminal brain natriuretic peptide precursor (NT-proBNP),and acrylic ball resistance.SPSS 18.0 software package was used for risk factor analysis.Qualitative data using chi-square test,was used to analyze the high risk factors of CAA group,and logistic multivariate regression analysis was also used.Results Chi-square test showed that male,with febrile days ＞ 14 d,NT-proBNP ≥ 1 000 ng/L,immunoglobulin resistance was more likely to have KD concurrent CAA (P ＜ 0.05).Multiple Logistic regression analysis showed that male [OR =4.092,95％ CI (1.514,11.060),P =0.004],febrile days ＞14 d [OR =12.436,95％ CI (4.599,33.631),P =0.000],NT-proBNP≥ 1 000 ng/L [OR =3.305,95％ CI (1.401,7.794),P =0.005],and immunoglobulin resistance [OR =3.842,95 ％ CI (1.562,9.453),P =0.000] were independent risk factors for KD concurrent CAA.Conclusions Male children,febrile days ＞ 14 d,NT-proBNP≥ 1 000 ng/L,and immunoglobulin resistance were independent risk factors of CAA.

Objective To analyze the influence of radial neck fracture on the upper limb function in older children,and to evaluate the curative effect of plate fixation in the treatment of Salter-Harris Ⅱ type of radial neck fracture.Methods The clinical data of 16 older children with radial neck fractures who treated by T plate internal fixation were retrospectively analyzed.16 cases were closed fractures,merging radial nerve injury in 1 case,3 cases of distal humerus fractures,1 case with rib fractures,fractures were Salter-Harris Ⅱ type,adopt steel plate internal fixa tion.Results 1 6 patients were followed up for 9-1 8 months.X-ray healing time was 6-9 weekson average 7.6 weeks.No malunion and no healing,no case of epiphyseal injuries.1 patient appeared steel block forearm supination.Postoperative patients with forearm pronation were greater than 90° supination were greater than 60 °.No radial nerve injury.Evaluation results were good.Conclusion Clinical treatment effect of open reduction and plate internal fixation in the treatment of older children with Salter-Harris Ⅱ type of radial neck fracture is satisfactory.Surgical treatment not only can enhance the fracture stability,but also can do the elbow joint function exercise to prevent dysfunction much earlier.

Objective To assess the effects of gastric bypass versus medical therapy in patients with obesity and type 2 diabetes. Methods The Cochrane library, Embase, PubMed, Chinese biomedical literature database and Wanfang database up to April 2014 were searched. Randomized controlled trails(RCTs) of frequently-used bariatric surgery for obese patients with type 2 diabetes were included. Study selection, data extraction, quality assessment, and data analyses were performed according to the Cochrane standards. Results Four RCTs involving 157 patients in the gastric bypass groups and 152 patients in the medical therapy group were enrolled. Compared with medical therapy, gastric bypass for type 2 diabetes significantly decreased the levels of HbA1C(mean difference = -1. 85% , 95% CI -2. 15 ~ -1. 56, P< 0. 01), fasting blood glucose( standard mean difference = - 0. 90 mmol/ L, 95% CI-1. 24 ~ -0. 57, P<0. 01), body weight(mean difference=-23. 39 kg, 95% CI -29. 17 ~ -17. 61, P<0. 01), waist circumference(mean difference= -15. 36 cm, 95% CI -17. 51 ~ -13. 22, P<0. 01) and the dose of hypoglycemic medicine; while it increased the number of patients with HbA1C<6% (RR=5. 49, 95% CI 2. 22 ~ 13. 56, P<0. 01), the rate of adverse events(RR=1. 96, 95% CI 1. 42 ~ 2. 70, P<0. 01), and the level of high-density lipoprotein-cholesterol(mean difference=1. 24 mmol/ L, 95% CI 0. 64 ~ 1. 84, P<0. 01). Conclusions Gastric bypass surgery is more effective compared with medical therapy alone for obese patients with type 2 diabetes. Further intensive RCTs of high-quality in multiple centers with long-term follow-up should be carried out to provide more reliable evidences.