Objective To study the diagnostic value of 3 dimentional CT reconstruction in upper urinary tract obstructive diseases. Methods 37 patients with upper urinary tract obstructive diseases underwent thin slice helical CT scan and 3 dimentional reconstruction of the urinary tract as well as 3 dimentional CT angiography when needed. Results All the cases have been definitely diagnosed including ureteral carcinoma in 8, bladder carcinoma in 2, ureteral calculi in 9, benign ureteral stricture in 7, congenital malformation in 7 and pelvic tumor in 4.All the patients except those with pelvic tumors underwent surgical intervention and the diagnosis were confirmed.The operative findings were in concord with the helical CT results. Conclusions 3 dimentional CT reconstruction of the urinary tract can provide distinct urinary tract images and helps determining the site and the cause of the obstruction. Compared with other methods, the procedure has the advantages of high resolution, rapid imaging and low invasiveness. It might become the most valuable means of detecting upper urinary tract diseases.

Objective To study the function of let-7 and miR-24 in UVB-induced apoptosis.Methods After NIH3T3 cells were irradiated with UVB.Hoechest33342/PI staining was used to study the cell apoptosis and RT-PCR was used to uralyzc the expression level of let-7 and miR-24.In addition,potential target genes of these miRNAs in PicTar were classified into different function categories through GOstat software.Results Compared to the control,the NIH3T3 cells exposure to UVB appeared typical apoptotic and necrotic ceils by fluorescence microscope.The exprossion level of let-7 and miR-24 in NIH3T3 cells after UVB irradiation was higher than that of the control.Among the target genes,casp3,bc1212,map3kl and cdk5 were also involved in UVB-induced apoptosis mechanism.Conclusion Let-7 and miR-24 play a role in UVB-induced apoptosis.

Objective To investigate the infectious complications after nonmyeloablative allogeneic peripheral blood stem cell transplantation (NASCT). Methods Ten patients with leukemia received NASCT from HLA-identical or 1-3 antigen mismatched sibling donors with conditioning regimens of Flu/Cy+BU+ALG. Five patients were acute leukemia (AL) and all of them is in complete remission (CR1). Cyclosporine in combination with methotrexate was administered for GVHD prophylaxis. Results WBC recovered to more than 0.5 ?10 9/L during postoperative 10 day to 38 day and platelet recovered to more than 20?10 9/L during postoperative 8 day to 16 day. Bacterial infections occurred in 3 patients (30 %) and cytomegalovirus (CMV) infections in 2 patients (20 %). Varicella zoster virus (VZV) infections occurred in one patient (10 %). No fungal infections were documented. No patients died as a result of infection . Conclusion NASCT is a safe and effective therapeutic method for leukemia. It reduces acute GVHD,regimen-related toxicity and early neutropenia associated with traditional allo-HSCT.

Objective To precious localize DNase Ⅰ hypersensive sites exactly in the promoter region of CD133 of cell line SW480 by inverse-PCR.Methods The colonel cancer cell SW480 nuclei were suspended in digested buffer,treated with DNase Ⅰ at the concentration of 10 U/ml for 10 min.The inversePCR was performed as follows.DNA treated by DNase Ⅰ was purified,fragmented with restricted enzyme EcoRI and Xmal Ⅰ.Then the ends were blunted,ligated by T4 ligase.PCR was performed,and production was sequenced.The restricted enzymes cut sites were near DNase Ⅰ cleavage sites.Results 9 DNase Ⅰ cut sites were identified in CD133 promoter region.The DNaseI hypersensitive sites all distributed in a region -300 bp--700 bp up to transcription start site.Conclusion The DNase Ⅰ cleavage sites could identified preciously by application of inverse-PCR.These sites locate in a region of-300 bp--700 bp up to transcription start site.

0.05),and Salter pelvic osteotomy could significantly decrease the acetabular anteversion(P

Objective Investigating for the standardization of serum enzyme determination by using enzyme calibrator in lab tests Methods 150 laboratories were involved in this program. One enzyme calibrator and three patient samples were send to each participate lab The calibrator was tested using routine method and record the results The patient samples were analyzed before and after calibration Record the results All lab data was processed with computer Results Compare with the target values, the bias of alanine aminotransferase (ALT), aspartate aminotransferase (AST), amylase (AMY) and lactate dehydrogenase (LD) assays were 3 8%, -1 8%, 2 3% and -5 2% respectively, the bias of alkaline phosphatase (ALP), gamma glutamyltransferase (GGT) and creatine kinase (CK) assays were 13 7%, -13 9 and -19 2% respectively The precision of the enzyme assays were improved by using calibrators Conclusions The traceability of ALT, AST, AMY and LD assays were reasonable Calibrating by using enzyme calibrator can improve the assay precision among laboratories

Objective Diffusion/perfusion-weighted MRI (DWI、PWI) was performed to evaluate growth and vascularity of implanted C6 rat gliomas. Methods 36 female Wistar rats were implanted of C6 glioma cells intracerebrally. Between 1 and 4 weeks after implantation, eight to ten different rats were imaged with T_1WI, T_2Weighted imaging, DWI, PWI, and postcontrast T_1WI at each weekly time point. After MRI, each rat brain was examined histologically using HE and immunohistochemical staining for CD34. Results On DWIs, statistical differences of apparent diffusion coefficient (ADC) values for both the solid tumor component and peritumoral region were present comparing 3-4 weeks with 1-2 weeks after implantation (P

Objective To explore clinical application of retrograde medial and lateral gastrocnemius muscle flap for soft tissue defects of the middle and lower third of the leg. Methods From August 2008 to December 2009, in our hospital we adopted retrograde medial and lateral gastrocnemius muscle flap to renovate 5 cases of refractory soft tissue defects of the middle and lower third of the leg. Results Five cases of retrograde medial gastrocnemius muscle flap were survived, morphology and function of soft tissue defects were renovated well. Conclusion This operation is an effective and reliable technique for soft tissue defects of the middle and lower third of the leg, which is performed without sacrificing the major blood vessels, probing vascular pedicle and matching vascular anastomosis.

Objective To construct a recombinant adenovirus encoding ?-galactosidase gene(?-gal),which may be used to treat the lactose intolerance caused by lactase deficiency,with modified AdEasy system.Methods The sequence fragment of ?-gal was cloned into the shuttle plasmid pAdTrack-CMV,and the homo-logous recombination was completated with backbone plasmid pAdEasy1 in the E.coli BJ5183 to construct the recombinant adenoviral plasmid.The adenoviruses were packaged and amplified in the HEK293 cells mediated by liposome.The viral titre was measured by limiting dilution assay and the transfection efficiency was observed by X-gal histochemical staining.Results The recombinant adenovirus with ?-gal was constructed successfully and the viral titre was(2.5~4.0)?1011EFU/ml.More than 70% HEK293 cells were transfected when the MOI was 10.Moreover,more than 65% cells were blue after X-gal histochemical staining.Conclusion Recombinant adenovirus carrying ?-gal with high titre and efficient transfection is constructed successfully by AdEasy system,which supplies valuable experimental basis for the gene therapy to the lactose intolerance caused by lactase deficiency.