The main functions of modern Clinical Engineer(CE) is discussed. By combining experience of clinical engineering in developed country with clinical practice in our country, the work character problem of clinical engineering was proposed. According to the reality of equipment management and operation, the function of CE is not only to ensure medical equipment to run normally but also estimate the value of equipment in before buying or abandoning, PSS and technology study. Through the efforts of CE, the main functions of equipment can be made the best, medical therapy and new method research is more efficient.

Diffuse large B-cell lymphoma (DLBCL) represents the most common type of malignant lymphoma. DLBCL is heterogeneous with respect to morphology, immunophenotype, biology, clinical presentation and outcome. Constitutive activity of the NF-κB pathway may contribute to the poor prognosis of patients with activated B cell-like (ABC) subgroup of DLBCL, caspase recruitment domain 11 (CARD11) is the important signal protein in the signaling pathway of NF-κB. Furthermore, various pre-clinical data have proved the importance of CARD11 in DLBCL. This review summarizes the biological characteristics of CARD11, and its relationship with NF-κB signaling transduction pathway and the outcome of DLBCL, so that we can better understanding the pathogenesis and new therapeutic target of DLBCL.

With rapid advancements in internal fixation and new surgical instruments, surgical treatment has gradually emerged as the first treatment choice for mandibular condylar fractures. An appropriate surgical incision is the first and determinant step during surgery to avoid postoperative complications. Hence, surgical approaches in relation to oral and maxillofacial trauma surgery for the treatment of mandibular condylar fractures have been extensively investigated. This review summarizes the research progress on surgical approaches in the management of mandibular condylar fractures.
Fracture Fixation, Internal ; Humans ; Mandibular Condyle ; surgery ; Mandibular Fractures ; surgery ; Postoperative Complications ; Research ; Surveys and Questionnaires

Objective To study and evaluate the inhibitory role of ?-carboxyglutamic acid(Gla)in the Gla domain of prothrombin in the formation of calcium oxalate crystals. Methods The addition of morpholine and formaldehyde to the solution of prothrombin caused the conversion of 8 Gla to ?-methyleneglutamic acid (8?-MGlu)or 2 Gla to ?-methyleneglutamic acid(2?-MGlu) ,the inhibitory activity of which to calcium oxalate crystallization was detected with seeded crystallization technique. Results The conversion of Gla to ?-MGlu leads to the decreased inhibitory activity of prothrombin to calcium oxalate crystallization,the inhibitory index being decreased from normal 14.2 to 12.8 of 2?-MGlu or 5.0 of 8 ?-MGlu prothrombin respectively. Conclusions Gla in prothrombin may play an important role to inhibit the formation of calcium oxalate calculi.

Objective To explore the diagnostic value of cerebrospinal fluid(CSF) biochemical indexes in central nervous system (CNS) infection .Methods The results of CSF culturing and detection of biochemical indexes including glucose(Glu) ,lactate dehy‐drogenase(LDH) ,chloride ion(Cl) and protein(PRO) were collected from the First Affiliated Hospital of Xi′an Jiaotong University from September to December 2013 .Taking the results of CSF culturing as golden standard ,the biochemical indexes were analyzed by using receiver‐operating characteristic(ROC) curve for single index and combined indexes .Results A total of 157 CSF speci‐mens were collected ,including 39 culture‐positive specimens and 118 culture‐negative specimens .Areas under ROC curve(AUC) of Glu ,LDH ,Cl and PRO were 0 .653 ,0 .633 ,0 .626 ,0 .671 ,respectively .The AUCs of combined detection of these biochemical inde‐xes were higher than those of single index ,and the AUC of combined detection of these four indexes was the largest ,up to 0 .694 , but all were less than 0 .7 .Conclusion Glu ,LDH ,Cl and PRO all could be independent biochemical indexes for diagnosing CNS in‐fection ,among which PRO has the highest diagnostic value .And combined detections of these indexes are better than single detec‐tions ,especially combination of four indexes ,which is the strongest indicator ,but accuracy is low whether single or combined detec‐tion .More sensitive and specific biomarkers of CSF should be explored for rapid diagnosis of CNS infection .

OBJECTIVE:To provide reference for standardized dispensation of chemotherapy drugs in PIVAS.METHODS:Cautions for the dispensation of chemotherapy drugs and process steps of emergency were introduced as well as the disposal of waste and liquid after dispensing.RESULTS & CONCLUSIONS:Centralized and standardized dispensation of chemotherapy drugs in PIVAS improves the quality of the dispensation of chemotherapy drugs.And it ensures the safety of drug use and strengthens the occupational protection of staff.

Total parathyroidectomy (PTX) can be used to treat secondary hyperparathyroidism (SHPT)in uremic patients,relieving the patient's osteolytic destruction.Complete resection of bilateral parathyroid glands is key to successful operation.Recently,2 patients successfully received surgical treatment,in which carbon nanoparticles suspension injection were used.With the help of carbon nanoparticles suspension injection,all of the 4 hyperplastic parathyroid glands were found successfully.The parathyroid hormone(PTH) was significantly decreased after operations and the clinical symptoms were relieved simultaneously.We conclude that the use of carbon nanoparticles suspension injection is helpful for total parathyroidectomy operation in uremic patients with SHPT,which can protect the normal thyroid and recurrent laryngeal nerve.

Objective To investigate the effect of over-expression of ROBO4 on permeability of human renal glomerular endothelial cells (HRGECs) in high glucose medium.Methods HRGECs infected with recombinant lentiviral vector ROBO4 were cultured in high glucose or low glucose medium in vitro.The protein levels of ROBO4 and ARF6 in each group were detected by Western blotting.The endothelial permeability was measured by the effiux of fluorescein isothiocyanate-dextran (FITC-Dextran)permeated through the monolayer endothelial cells using Transwell cell model system.The cell viability after lentivirus transfection was measured by CCK8 assay.Results The transfection rate of lentiviruses in HRGECs reached 80％ 72h after,and obvious overexpression of ROBO4 protein was in transformed cells compared with the empty vector group (P＜0.05).The lentivirus-mediated ROBO4 transfection did not affect cell viability of HRGECs.Compared with the low glucose group,the expression of ROBO4 increased obviously after 12h,but declined after 24h (P＜0.05),and reached to minimun after 72h (P＜0.05).On the contrary,the expression of ARF6 increased after 12h,and the increase reached to the maximum after 72h (P＜0.05).Furthermore,the vascular permeability increased gradually after 24h,and reached to the maximum after 72h (P＜0.05) in high glucose group.Compared with the empty vector group,the over-expression of ROBO4 inhibited the expression of ARF6 significantly,and the FITC-Dextran permeability reduced obviously.Conclusion Over-expression of ROBO4 may significantly enhance the barrier functions of HRGEC in high glucose medium,and ROBO4 activation may be a potential therapeutic approach in diabetic nephropathy.

Objective To investigate the effects of adiponectin (APN) on proliferation,migration and tube formation of RF/6A cells,and explore the effects of APN on choroidal and retinal angiogenesis.Methods Well cultured RF/6A cells were randomly divided into the control group and three groups with different concentrations of recombinant adiponectin (5 pg · mL-1,50 pg · mL-1,500 pg · mL-1) for 1 hour.After 24 hours,cell proliferation,migration and tube formation were detected by MTT assay,wound scratch assay and seeding cells in matrigel,respectively.Results The cell proliferation in all APN groups was weaker than that of control group (P ＜ 0.05),the cell migration area (pixels) of all APN groups was significantly smaller than that of the control group (P ＜ 0.05),and the number of tube formation of all APN groups was significantly less than the control group (P ＜ 0.05).Cell proliferation,migration and tube formation decreased along with the increase of APN concentration.Conclusion APN can obviously inhibit the angiogenesis process of RF/6A cells.This inhibitive effect indicates the protective role of APN in choroidal and retinal angiogenesis.

Objective To investigate the effect of rosiglitazone on the expr es sion of PPAR?,TGF-a1 and PCNA and its mechanism on renal interstitial fibrosi s following unilateral ureteral obstruction(UUO) in rat kidney. Methods Thirty r ats were randomly assigned to shame operation group(sham group),UUO group, rosig litazone(5 mg穔g-1?d-1) treatment group after UUO. Immunohistochemistry,RT-PCR,Western blotting were performed to investigate renal pathological changes an d examine the expression of PPAR?,TGF-a1,PCNA on the 7th and 14th day in the kidney. Results In comparison with the shame group,the expression of PPAR?,TGF-a1,PCNA of UUO and treatment groups increased significantly(P