Objective To study the effect of finasteride on preventing prostate hyperplasia with acute urinary retention.Methods Totally 626 patients with benign prostatic hyperplasia (BPH) were randomly divided into treatment group (316 cases) and control group (310 cases),followed up for 3 years.The incidence of acute urinary retention and prostate volume changes were analyzed.Results There were 3 cases of acute urinary retention in treatment group (1.0 ％),9 cases in control group (2.9％) (x2 ＝5.37,P＜0.05).In treatment group,the average prostate volume was reduced about 23.6％ compared with before taking the medicine,on the contrary,prostate volume was averagely increased 12.3％ in control group.Conclusions Finasteride can reduce the risk of acute urinary retention by narrowing the prostate volume in patients of benign prostatic hyperplasia.

ObjectiveTo study the feasibility,safety and efficacy of laparoscopic cyst excision and Roux-en-Y hepaticojejunostomy for adult congenital choledochal cyst.MethodA retrospective study was conducted on 7 adult patients with congenital choledochal cyst who received total laparoscopic cyst excision and Roux-en-y hepaticojejunostomy from May 2008 to February 2011 in the Department of General Surgery of Shengjing Hospital,China Medical University.ResultsAll the laparoscopic surgery was successful.The mean operation time was 210 minutes.The average intraoperative blood loss was 80 ml.All patients were out of bed within the first 24 h after surgery.The mean time to first flatus/bowel motion was 2.4 days.Except 1 patient who had small amount of bile leakage,all patients recovered smoothly without any major postoperative complications.The average hospital stay was 8.1 days.No patients suffered from abdominal pain,fever or jaundice during follow-up from 3 to 30 months.ConclusionTotal laparoscopic cyst excision and Roux-en-Y hepaticojejunostomy was a safe,efficacious,and minimally invasive procedure.

A case of mandible plasma cell myeloma is reported.Plasma cell myeloma is a monoclonal neoplastic proliferation of plasma cells of bone-marrow derivation,usually multi-centric but jaw bones are rarely involved.The treatment requires precise pathological diagno-sis.The prognosis of solitary jaw bone lesions can be good after treatment.

Objective To compare the applications of half-Fourier acquisition single-shot turbo spin-echo(HASTE)sequence and true fast imaging with steady state precession(True FISP)sequence for the delineation of structures and diseases in several twin pregnancy with comorbidities and to explore the clinical value of two series of fast imaging for MRI of fetus.Methods 27 twin preg-nancy women with comorbidities were imaged with HASTE and True FISP sequences.All images were statistically analyzed in re-spect of imaging qualities and artifacts.MR signs of fetal brain were analysized.Results There were abnormal changes in brains in 7 of 27 cases.Both sequences could demonstrate the structures and lesions of the fatus.Imaging quality scores of HASTE were higher than that of True FISP,but with more respiratory blurring.Conclusion There might be varying abnormalities in central nervous system in twin pregnancy with comorbidities.Combining the demonstration abilities of HASTE and True FISP is needed when de-tecting fetus lesions,especially the brain.

ObjectiveThrough the examination of Clostridium difficile (Cd) in the stool of inflammatory bowel disease (IBD) patients to investigate its infection status in IBD patients and the relationship with IBD.MethodsFrom December 2009 to January 2011,a total of 130 diagnosed IBD patients were collected in the Department of Gastroenterology,Ruijin Hospital,Shanghai Jiaotong University School of medicine,including 60 ulcerative colitis (UC) patients and 70 Crohn's disease (CD) patients.At same time.60 irritable bowel syndrome patients and 60 healthy volunteers were collected as control.Stool samples were tested by PCR and Cd toxin A/B test kit (CDTK).SPSS statistical software was used for statistical analysis.ResultsIn 130 enrolled IBD patients,16 cases (12.3％) were Cd infected,of which 10 were UC cases (16.7％) and 6 were CD cases (8.6％).No Cd infection was found positive in control group (x2 =15.779,P=0.000).The infection rate of Cd in the patients of active stage was higher than that in the patients of inactive stage (x2 =10.092,P=0.001).The infection rate of coion-type CD patients was 4/14,which was significantly higher than those of other types CD patients (x2 =13.125,P=0.001).The infection rate of Cd was 4.5％ in mild UC patients,14.3％ in moderate and 6/17 in severe (x2 =6.667,P=0.037) ; the infection rate were 0％ in mild CD patients,4.2％ in moderate and 5/16 in severe.The infection rate increased along with the increase of The disease severity (x2 =13.907,P=0.000).There was no significant difference in the infection rate of Cd between broad-spectrum antibiotics used and not used patients (x2 =1.414,P =0.378), or between patients with broad-spectrum antibioticsused aloneand combinedwith immunosuppressant (x2 =0.330,P=0.962).ConclusionsThere was certain infection rate of Cd in IBD patients,especially the patients in active stage. The infection rate increased along with the increase of the IBD severity.

Objective:Two experiments were performed to research the effects of visual field factor on pseudoneglect and to test the theories about neglect and pseudoneglect.Methods:Experiment 1 employed the landmark task and greyscales task in tachistoscopic and forced-choice conditions.Experiment 2 employed the greyscales task and tachistoscopic visual three-field technique.Results:Experiment 1 manifested that greyscales had no crossover effect;the length factor had effect on the greyscales task as the landmark task,but it only affected the bias magnitude,not the error direction.Experiment 2 indicated that the main effect of visual field was significant:when the greyscales were presented in the middle or right,pseudoneglect manifested,but when in the left,pseudoneglect vanished.Conclusion:The results provide evidence supporting the hypothesis that the perceptual distortion derives from the attentional process.

AIM: To determine whether Sca-1~+ cells from fetal liver can differentiate into neural cells. METHODS: The sex of 14.5-day-old murine fetuses was determined by PCR analysis of sry gene, and Sca-1~+ cells from male fetal liver were isolated with a magnetic cell sorting kit, 2?10~3 of which were then transplanted into lethally irradiated female mice. The donor cells and their characteristics in recipient brains were identified and detected by FISH and immunohistochemistry double-staining analysis at 60, 120, 180 days after transplantation. RESULTS: There existed many male cells in brains of female recipients, some of them express neuron-specific nuclear protein (NeuN), and some of them express the astrocyte-specific marker, i.e. glial fibrillary acidic protein (GFAP). CONCLUSION: Sca-1~+ cells from fetal liver, which contain hematopoietic stem cells, can differentiate into neuronal cells and astrocytes in the brains of adult mice.

AIM: To investigate the effects of ?-mercaptoethanol (?-ME) and all-trans rentinal acid (RA) on glial fibrillary acidic protein (GFAP) expression in mesenchymal cells derived from mouse fetal liver in vitro. METHODS: Cells suspension from 14.5-days-old mouse fetal liver were cultured in DMEM/HEPES/F12 supplemented with 20% FCS and mesenchymal cells were acquired after discarding nonadherent cells. The 5th passage cells were induced by ?-ME and RA. The characteristics of treated cells were assayed by immunocytochemistry staining at 5 hours and 5 days after induction. ?-actin as an internal control, GFAP gene expression of mesenchyal cells was detected with semi-quantitative RT-PCR. RESULTS: After being inducted by ?-ME and RA, 80% approximately of the cells exhibited typical neural morphology and about 85% expressed GFAP phenotype. Semi-quantitative RT-PCR showed that mRNA expression of GFAP increased in treated cells versus untreated cells (P

OBJECTIVE:To develop an HPLC method for the determination of Tanshinone Ⅰ,Tanshinone ⅡA,Cryptotanshinone,and Dihydrotanshinone in Shandantong retard tablets.METHODS:The samples were separated on Lichrospher C18 column(250 mm?4.6 mm,5 ?m) with the mobile phase consisted of methanol-water(80∶20).The detection wavelength was set at 270 nm.RESULTS:The linear ranges of Tanshinone Ⅰ,Tanshinone ⅡA,Cryptotanshinone,and Dihydrotanshinone were 0.20～2.00 ?g,0.30～3.00 ?g,0.20～2.00 ?g,and 0.20～2.00 ?g,respectively.The average recoveries were 99.54%,98.89%,100.10%,and 99.44%,respectively with RSD at 0.40%,0.92%,1.30% and 1.53%(n=6),respectively.CONCLUSION:This method is simple,rapid and accurate,and suitable for the quality control of Shandantong retard tablets.

Objective To investigate the effects of adenovirus vectors for BTB and cap'n'collar protein homology 1 (Bach1) small interfering RNA (siRNA) on antioxidanffactors and fibrosis related cytokines in lung fibroblasts (MLF) in transforming growth factor (TGF)-β1 induced mouse.Methods Bach1 siRNA recombinant adenovirus vectors and blankadenovirus vectorwere constructed,then the MLF cells were incubated with TGF-β1 (5 ng/ml) for 24 h and infected with blankvector and successful constructed Bach1 siRNAs.The messenger RNA (mRNA) and protein expression of Bach1,heme oxygenase (HO)-1,glutathione peroxidase 1 (GPx1) and nicotinamide-adenine dinucleotide phosphate:quinone oxidoreductase-1 (NQO1) in cell supernatants were determined by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot.Changes of fibrosis-related cytokines including TGF-β1 and interleukin (IL)-6 levels in cell supernatants were determined by enzyme-linked immunosorbent assay (ELISA).One-way analysis of variance (ANOVA) was performed for multiple group comparisons and LSD test was used to compare the two groups.Results Bach1 mRNA (2.127±0.089) and protein expression increased significantly after TGF-31 stimulation compared with blank group (1.000±0.067,t=-21.77,P＜0.01),as well as the expression of fibrosis-related cytokines TGF-β1 (52±6) and IL-6 (34±6) in cell supernatants increased significantly after TGF-β1 stimulation compared with blank group (26±4,t=-11.11,P＜0.01 and 20±5,t=-5.32,P＜0.01),but the mRNA expression of HO-1 and GPx1 (0.403±0.040 and 0.567±0.112) also the protein expression decreased significantly compared with mRNA (1.000±0.181,t=25.57,P＜0.01 and 1.000±0.212,t=6.68,P＜0.05) and protein expression in blank group.Follow the Bach1 siRNA treatment,Bach1 mRNA (0.153±0.015) and protein levels were significantly downregulated compared with mRNA (2.129±0.089 and 1.973±0.035,F=1835.95,P＜0.01) and protein expression of TGF-β1 and blank vector group,as well as TGF-β1 (26±3) and IL-6 (11±3) expression in cell supernatant were significantly inhibited compared with TGF-31 (52±6 and 34±6) and blankvector group (49±5 and 33±6) (F=22.25,P＜0.01 and F=28.38,P＜0.01).But the mRNA levels of HO-1 (3.303±0.294) and GPx1 (1.840±0.231) in MLF were promoted significantly compared with TGF-β1 (0.403±0.040 and 0.567±0.112) and blank vector group (0.353±0.057 and 0.667±0.090) (F=53.90,P＜0.01 and F=526.25,P＜0.01).Conclusion Silencing Bach1 rescues TGF-β1 induced reduction of antioxidants and increasethefibrosis in MLF cells.The study offers an experimental basis to explore pathogenesis of oxidative stress and antioxidant therapy for connective tissue disease related inter-stitial lung disease.