Objective To investigate the feasibility of restoration of cartilage defect with silk fibrin/chitosan(SF-CS)biological scaffold compound by induced bone marrow mesenchymal stem cells (BMSCs)in the elderly rabbits.Methods BMSCs were extracted,cultured and induced to differentiate,then inoculated into SF-CS three-dimensional scaffold restoration.54 rabbits(aged 16-18months)were divided into scaffold restoration,single scaffold and control groups(n=18 per group).The right knee joint was used for building cartilage defect model and implanted by scaffolds.General observation,tissue staining and modified Wakitani histological scoring were performed at 4,8 and 12weeks after operation.Results SF-CS scaffold was structured by multiple interlinked pores.The average pore size was 151.72 μm.The porosity was(92.72±4.78)％.The imbibition rate was (141.10± 6.87)％.BMSCs was grown well and proliferated dynamically in SF-CS scaffold after induction.At 12 weeks,the cartilage defect was basically repaired,type Ⅱ collagen was positively expressed and the scaffold was almost assimilated in scaffold restoration group.In single scaffold group,the cartilage defect was repaired mainly by fiber tissue,type Ⅱ collagen was less expressed and the scaffold almost degraded while the cartilage defect was repaired badly in control group.The scaffold restoration group was superior to single scaffold and control groups(P＜0.05)in improving the Wakitani score.Conclusions The SF-CS scaffold as BMSCs carrier may restore cartilage defect in knee joint of the elderly rabbits.

This study examined the cytotoxicity of a new implant material modified by microarc oxidation technique. Cells on different surfaces of the implant were evaluated 2, 4 and 6 days after treatment. The results showed that cell attachment, cell morphology, and cell proliferation were influenced by the different surface treatments, and a significant increase in the osteoblast cell activity was observed on the porous MAO-Ti coating. Our results suggest that the porous MAO-Ti surface has a better biocompatibility and electrochemical performance than pure titanium surface.

目的探讨选择性脊神经后根切断术(SPR)治疗小儿脑性瘫痪(CP)的疗效。方法对我院获取1年完整随访资料的62例SPR患儿进行回顾性分析。结果按AshWorth 5级肌力标准判断,术后下肢肌张力平均下降2.4级,上肢肌张力平均下降0.4级。术后1年患肢肌张力缓解62例(缓解率100%),行走功能和步态改善48例(77.4%)。伴随症状部分改善。结论SPR能有效缓解CP患儿肢体肌张力,改善康复条件。

Animals ; Cell Proliferation ; drug effects ; Female ; Muscle, Smooth, Vascular ; cytology ; Myocytes, Smooth Muscle ; cytology ; drug effects ; Nitric Oxide ; metabolism ; Rats ; Rats, Sprague-Dawley ; Tamoxifen ; analogs & derivatives ; pharmacology

Background and purpose:Inlfammatory bowel diseases (IBD) are a group of chronic intestinal diseases, including ulcerative colitis (UC) and Crohn’s disease (CD). This study identified differentially expressed miRNAs in UC, CD and colitis-associated colorectal cancers (CAC) to explore their potential as novel molecular biomarkers. Methods:Tissue samples were taken from 13 UC patients, 3 CD patients, 12 CAC patients, and 8 age-and gender-matched healthy controls. The miRNA expressions were detected by real-time fluorescent quantitative polymerase chain reaction (RTFQ-PCR) assay. Known targets of deregulated miRNAs were utilized using miRWalk 2.0 database, and subsequent bioinformatics analysis of these target genes was performed by DAVID software (GO-analysis, KEGG-analysis and BIOCARTA-analysis). Results:The data showed that miR-146a, miR-27a, miR-29a, miR-20a and miR-21 were upregulated in UC, CD and CAC tissues compared with normal control. Moreover, the target genes of these miRNAs were enriched in several key signal transduction pathways including cancer-related pathway and immu-nity-associated pathway. Conclusion:miR-146a, miR-27a, miR-29a, miR-20a and miR-21 may play important roles in the switching from IBD to CAC.

A competency dictionary of advanced health informatization application persons was compiled by inter-viewing 20 health information persons with behavior events interview , their competency characteristics were coded By Nvivo, the coding frequency and characteristics score in good performance group and ordinary group were ana-lyzed by variance analysis, which showed 8 characteristics of key competency and 12 characteristics of basic compe-tency in advanced health information application persons.

Adenocarcinoma ; metabolism ; pathology ; Atrophy ; Biomarkers ; metabolism ; Diagnosis, Differential ; Humans ; Male ; Prostate ; pathology ; Prostatic Diseases ; metabolism ; pathology ; Prostatic Hyperplasia ; metabolism ; pathology ; Prostatic Neoplasms ; metabolism ; pathology ; Prostatitis ; metabolism ; pathology ; Xanthomatosis ; metabolism ; pathology

This paper introduces the working principle of the blood circle treatment system outside the body. A monitoring instrument of plasma leakage suited for the blood circle treatment system outside the body is developed based on the absorption spectrum experiments of plasma leakage. Photoelectric detection technology and virtual instrumentation are utilized in the development. A series of detecting experiments of waste solution containing plasma with continuously changing concentration show the monitoring system possesses a relatively high sensitivity. Moreover, the experiments of continual detection with plasma concentration at one certain point indicate the monitoring system has a quite good stability. The monitoring instrument is adapted to dynamically detecting the plasma leakage when the blood circle treatment system outside the body is working.

Objective To explore surgical treatment of ulcerative colitis (UC). Methods Clinical data of 16 patients of UC undergoing surgery were retrospectively analyzed. Results In this series,16 out of 78 UC patients undergoing surgery included failing to control symptom by conservative therapy in 10, bowel obstruction in 3,suspected malignance in 3. Eight cases underwent total proctocolectomy and ileostomy,4 with total proctocolectomy and ileal pouch-anal anastomosis (IPAA),2 with total colectomy and ileorectal anastomosis,2 with partial colectomy. Conclusions The main indications for surgery in UC patients were failure of medical treatment, complicated bowel obstruction and suspected malignance. Total proctocolectomy and ileostomy is a cure for UC, total proctocolectomy and ileal pouch-anal anastomosis benifits defecation control but suffering from high incidence of stomal ulcer.

Objective To compare the dijference of prostate cancer detection rate (PCDR) between 12 + 1-core biopsy and 6-core biopsy of the prostate system guided by transrectal ultrasonography (TRUS).Methods The clinical data of 2 707 patients with prostate biopsy from July 1999 to June 2012 were retrospectively analyzed.These patients were 54 to 92 years old,mean age was 69 years old.The range of PSA was 0.02-158.56 ng/ml,with an average of 16.97 ng/mt.People in the range of PSA 0-4.00,4.01-10.00,10.01-20.00,20.01-30.00,and ＞ 30.00 were 161,826,827,312,581,respectively.The volume of the prostate ranged from 14.1 to 82.6 cm3,mean 47.9 cm3.The 1 603 cases before the July 2009 were performed 6-core biopsy guided by the finger,followed by 1104 TRUS-guided 12 + 1-core biopsy.In addition,after March 2012,60 patients accepeted the MRI examination before prostate biopsy.The strategy of prostate biopsy was medial 6-core,lateral 6-core,the 13th core was positioned at abnormal signal area of TRUS and MRI.Explore the difference of PCDR medial 6-core,lateral 6-core,systematic 12-and 12 + 1-core,and the difference of 13th core and the other 12 cores,with the cut off value of PSA quartile of 30 ng/ml and PV quartile of 46 cm3.Results Comparison of clinical characteristics of prostate biopsy between positive group and negative group was performed,and the result suggested that The positive outcome of prostate cancer biopsy was related with element such as high PSA,old age [(71.7 ±7.1)vs.(68.3 ± 8.1),P =0.008],large fPSA [(8.5 ± 36.4) vs.(2.3 ± 3.4),P ＜ 0.001],small prostate volume [(41.3 ±22.9) vs.(52.3 ±29.3),P ＜0.001],small value of f/t[(0.12 ± 0.07) vs.(0.17 ±0.10,P ＜0.001)],high density of PSA [(2.04 ± 9.36) vs.(0.32 ± 0.42),P ＜ 0.001],digital rectal examination [72.0％ (522/725) vs.23.1％ (457/1 982),P ＜ 0.001],irregular echo level [41.1％ (695/1 693) vs.28.0％ (284/1 014),P ＜ 0.001],hypoechoic [64.3％ (695/1 081) vs.17.5％ (284/1 626),P ＜ 0.001],microcalcifcation[56.8％ (586/1 032) vs.23.5％ (393/ 675),P ＜ 0.001].PCDR of 12 + 1-core biopsy was significantly higher than lateral 6-core biopsy[41.5％ (458/1 104)vs.37.0％ (408/1 104),P =0.033].However,PCDR of 12-core biopsy had no statistical differences with 6-core biopsy[40.7％ (449/1 104) vs.37.0％ (408/1 104),P =0.081].PCDR of TRUS-guided biopsy was higher than that of finger-guided biopsy in patients with PSA≤30 ng/ml and PV ＞46 cm3 [30.0％ (254/846)vs.22.2％ (284/1 280),P ＜0.001;31.7％ (124/391)vs.18.1％ (131/723),P ＜0.001].PCDR of the 13th core positioned at abnormal signal area of TRUS and MRI was higher than the average PCDR of other 12 cores [70.9％ (107/151) vs.56.6％ (3 109/5 496),P ＜ 0.001].Conclusion PCDR of TRUS-guided biopsy was higher than that of finger-guided biopsy in patients with PSA≤30 ng/ml and PV ＞46 cm3.PCDR of 12 + 1-core biopsy was significantly higher than that of lateral 6-core biopsy.However,PCDR of 12-core biopsy had no statistical differences with that of 6-core biopsy.PCDR of the 13th core positioned at abnormal signal area of TRUS was higher than the average PCDR of other 12 cores.