Objective To explore the effectiveness of microendoscopic discectomy (MED) in the treatment of lumbar disc herniation. Methods A retrospective analysis of clinical data of 59 cases of lumbar disc herniation treated by MED was made. The experience as well as lessons was summed up. Results All the 59 cases were followed for 4~24 months (mean, 15 months). Clinical outcomes were determined according to the Macnab criteria, which revealed that 43 cases had excellent, 14 cases had good, 1 had fair, and 1 had poor outcomes (with postoperative paralysis), the “excellent or good” rate being 96.6%(57/59). Conclusions MED is the first choice for contained herniated lumbar discs. A successful MED depends upon proper selection of patients and skillful surgical techniques.

Objective:To develop HMGA1-silencing SMMC-7721 cell and investigate its impacts on apoptosis and cell cycle in tumor cells.Methods:Constructing HMGA1-silencing SMMC-7721 cell through G418 selection of RNAi plasmid transfected cells;surveying the apoptosis,prliferation and cell cycle of the tumor cells by FACS and MTT.Results:Stable HMGA1-silencing cells were obtained successfully.The apoptosis percentage in RNAi group(29.46?3.04%) was significantly higher than that in the negative control (1.96?0.76%) or control (2.04?0.70%)within each P

Objective:To establish a mouse fibroblastic cell line stably transfected with HMGA1 gene,and to use the cell line to investigate the role of HMGA1 in tumor development and progression.Methods:Eukaryotic expression vector pcDNA3.0-HMGA1 was transfected into NIH3T3 by lipofectamine-mediation.Stable transfectants were selected by G418.The expression of extraneous HMGA1 gene was analyzed by RT-PCR and DNA sequencing.Cell growth was measured through MTT and the cell cycle by FCM.Soft agar colony formation was employed to analyze the ability of anchorage-independent growth.The expression of the immune inhibition factors of VEGF and FasL mRNA was detected by RT-PCR.Results:NIH3T3 cell lines stably expressing HMGA1 gene were successfully established.Comparing with controls,the HMGA1 gene-transfected cells grew faster,acquired the ability of anchorage-independent growth and expressed the immune inhibition factors of VEGF and FasL mRNA.Conclusion:Extraneous expression of HMGA1 gene can induce malignant transformation of NIH3T3 and modulate mRNA expression of immune inhibition factors.HMGA1 gene plays a key role in tumor development,progression and immune escape.

Objective To explore the methods of the endovascular repair of aortic disease(aortic dissection and aortic aneurysm).Methods We retrospectively analysed 64cases of aortic diseases treated with endovascular repair,including 42cases of aortic dissection(38 were Stanford B,4 were Stanford A) and 22 cases of aortic aneurysms.The stent-grafts were set into the aorta cavity to cover the damaged aortic intima through the femoral artery under local or general anesthesia;4 cases also underwent by-pass vascular operations.In 6 cases the left subclavian artery(LSA) was covered by stent-graft at the endovascular therapy without by-pass operation.Results Eighteen cases of immediate inner-leak were found after the stent placement,a rate of 28.13 %(18/64).No other severe complications occurred,such as stent-graft shift or error placement,aortic rupture,conversion to open-operation or paraplegia.The blood flow of all the vital branches of aorta were obviously improved.The mortality in the perioperative period was 6.25 %(4/64),the time of follow-up was 1-78 months(mean 32 months).Reoperation was done in 2 cases of aortic aneurysm group and 2 cases of aortic dissection group.Conclusions The endovascular repair is a good method for aortic disease.The short and middle term result is satistactory,and the long term follow-up needs to be studied.

Objective To evaluate the improved shunt insufficiency and clinical outcome using covered or bare stents for TIPS.Methods We searched all the main data base to identify trails of TIPS with covered or bare stents in improving shunt insufficiency and clinical outcome and evaluated the quality of included studies.Incidence of shunt insufficiency and clinical relapse relating to portol hypertension were analysed with Revman 4.2.Results Totally 1340 patients undergoing TIPS were included.Randomised controlled(12.8% vs 43.9%,P=0.004)trial and non-randomised controlled trials(11.6% vs 57.6%,P

Object To study comparatively the chromatographic fingerprint of Forsythia suspensa (Thunb ) Vahl in different producing aeras Methods Pyrolysis gas chromatography (PGC) was used Results The similar fingerprint of 13 samples (PGC) appeared The chromatographic overlap of them was over 89%, RSD

Objective To evaluate the clinical efficacy of transplantation of autologous peripheral blood stem cells(PBSC) for the treatment of toe or heel ulcer and of rest pain in patients with lower limb arterial ischemic diseases.Methods To mobilize patients' own stem cells with G-CSF for 5 days.At the sixth day,PBSC are collected with a blood-cells separator.The PBSC were then intramuscularly injected into ischemic areas of the lower limbs.Results After transplantation,all patients are followed up from 3 to 24 months.The rest pain disappeares in 12 patients,while toe or heel ulcers are cicatrized in 11 cases.However,4 patients lost in following up.ConclusionTransplantation of autologous peripheral blood stem cells is an effective method for the treatment of arterial ischemic disease.

Objective 　To investigate methods for the diagnosis and treatment of primary angitis of central nervous system (PACNS). Methods　Radiological and clinical feature, operative resutls of 12 patients with mass lesion presentations of PACNS were analyzed retrospectively. Results　The lesions showed low density on CT and long T1 and long T2 signal on MRI. The ring-wall enhanced lesions on MRI were flowery in 7 patients. Gross total resection of the lesions were performed in 10 patients with excellent recovery postoperatively. Growth of lesions were observed in 2 patients who underwent subtotal resection. Conclusions　 Lesions of PACNS have special appearance on enhanced MRI. More patients with mass lesion presentations of PACNS could be diagnosed preoperatively according to radiological and clinical feature.For these patients, surgery is the optimal treatment at present.

Objective To study how to improve velopharyngeal ring ligafion procedure by using ring ligator in velopharyngeal ring ligatian procedure and settle the problem that there is no standard to measure the interspace of the cavity of pharynx.Methods Select some deft palate patients who were between 3 to 17 ages.Then made five groups according to age (3 to 5,6 to 8,9 to 11,12 to 14,15 to 17).Then made five different types of ring ligators accrding to the normal size of the cavity of pharynx of different ages.Results The ring ligators were easily used and all the patients were repaired satisfied.Conclusion The application of ring ligator in velopharyngeal ring ligation procedure is simple and feasible.

Objective To construct and identify a novel IL-10 delivery system by transforming a hIL-10-containing plasmid into B.longum (BL -hIL -10).Methods A plasmid vector pBADs -GFP was selected which had been built by previous test and biosynthetic hIL-10 plasmid,through double enzyme digestion and enzyme reaction,to construct and identify PBADs-hIL-10 shuttle plasmid,then to synthesis BL-hIL-10.hIL-10 was expressed and secreted into the culture supernatant of BL-hIL-10 after 0.2% L-arabinose induction in vitro as examined by Western blot,enzyme-linked immunosorbent assay (ELISA)and RT-PCR;Culture supernatants and bacterium pellets were collected after continuous culture for 12,24 and 36h,respectively.hIL-10 was expressed and secreted into the culture supernatant of BL-hIL-10 after 0.2% L-arabinose induction in vitro as examined by Western blot,enzyme -linked immunosorbent assay (ELISA)and RT -PCR;Culture supernatants and bacterium pellets were collected after continuous culture for 12,24 and 36h,respectively.Results The BL-hIL-10 bacterial strain that can stably express hIL-10 factor was successfully screened out,and the levels of hIL-10 in both superna-tant and cell pellet were similarly reached maximum at 24h of culture.Conclusion BL-hIL-10 as a novel oral hIL-10 delivery system has been successfully established,which established a basis for the treatment of IBS with transgenic Bifidobacterium.