Purpose　The aim is to study the transduction of m urine stem cell factor(SCF) into umbilical blood cells by LipofectinRMmediated and expression in them.Methods　Murine SCF cDNA encoding extra cellu lar domain was isolated using PCR from plasmid pRC/CMV(containing SCF gene), and then recombined into the expression vector pcDNA3,and transferred into enrichme nt cultural umbilical blood cells. Semi-quantitative RT-PCR was used to examin e the expression on mRNA level.And the effects of supernatant of transfected umb ilical blood cells were investigated alone or in coordinate with GM-CSF by colo ny formation test of human bone marrow cells in semisolid culture.Results 　SCF mRNA was expressed in transfected umbilical blood cells.The su pernat ant of transfected umbilical blood cells could increase the number of CFU-GM, s ynergizing with GM-CSF.Conclusion　The supernatant of umbil ical b lood cells transfected with vector containing mSCF gene can stimulate the colony formation of human bone marrow cells in combination with GM-CSF.

Objective:To study the relationship betwen the mechanism of autoimmune disease and CD4+CD25+ T cell population in NIK mutated mice-aly mice.Methods:NIK mutated mice-aly/aly mice were used as model,aly/+mice as NIK normal control;cell populations were determined by FACS and the thymus structure were analyzed by immunohistochemistry.Results:The CD4+CD25+CD8- population were remarkably decreased in aly mice;and the UEA-1 positive cells were absent in aly mice.Conclusion:The autoimmune disease in aly mice might be the result of deceased the CD4+CD25+ population;the UEA-1 positive cells might play an important role in the development of CD4+CD25+ population. [

Objective To investigate the expressions of Stat3, CyclinD1 and proliferating cell nuclear antigen (PCNA) in non-small cell lung cancer (NSCLC), and analyze their relationships with carcinogenesis and progression of NSCLC. Methods SP immunohistochemistry was used to detect the expressions of Stat3, CyclinD1 and PCNA in 45 cases of NSCLC. Results The positive rate of Stat3 was 71. 1 % in NSCLC. The expression intensities of Stat3 was not associated with different tumor sizes and histological type, but it was associated with the expression intensities of CyclinDi and PCNA (r= 0.531, P

Objective To report the clinical features a nd pathologic findings of 1 case of mixed epithelial and stromal tumor of the ki dney. Methods The patient who had a 20-year history of taking oral contraceptive was a 50-year-old woman with pain in left flank asso ciated with hematuria for half a year.CT and MRI revealed an 8 cm?6 cm cystic a nd solid mass located in the upper pole of the left kidney.A diagnosis of cystic renal carcinoma was made before operation.Radical left nephrectomy was performe d in July 2004. Results The upper pole of the left kidne y was found severely adhesive with peripheral tissues du- ring operation.Gro ssly,the tumor exhibited a 7.9 cm?8.9 cm?9.0 cm multilocular cyst full of coff ee- colored mucoid fluid with varying size ranging from 0.5 to 2.0 cm.Focall y thick-walled cysts with solid areas were seen.Microscopic findings showed the tumor was composed of a mixture of stromal elements formed by spindle cells and epithelial elements that were variable in cell types including cuboidal,columna r and hobnail cells.Differentiation of gastrointestinal tract was found in epith elial elements.Thick-walled blood vessels and distinctive bands of smooth muscl e cells were present in the stromal elements.Immunohistochemical staining reveal ed that the epithelial component was positive for AE1/AE3,and stromal component was positive for ER,PR,and SMA.No specific treatment was given and the patient w as free of signs of recurrence 8 months after operation. Conclusions Mixed epithelial and stromal tumor of the kidney is recognized to b e a kind of benign neoplasm.Differentiation of gastrointestinal tract in epithel ial elements is rare.It should be distinguished from any other benign and malign ant tumors in the kidney.

Objective:Identification of dominant epitope of P2 in EAN and studying of similarity between the dominant epitope and LPS of Campylobacter jejuni.Methods:Screening peptide library with EAN serum.Identified positive clone by ELISA and compared similarity between positive clone and LPS of Campylobacter jejuni.Results:Affinity of all indentified positive clone increased remarkbly compared to negative control(P

BACKGROUND:Mesenchymal stem celltransplantation promoted skin repair in trauma via various regulatory mechanisms and inhibited scar formation. At present, many scholars believed that bioactive factors secreted by mesenchymal stem cells played an important role.
OBJECTIVE:To investigate the effects of bone marrow mesenchymal stem cellconditioned medium on the proliferation and col agen synthesis of hypertrophic scar fibroblasts.
METHODS:Human bone marrow mesenchymal stem cells and hypertrophic scar fibroblasts were isolated and cultured, and bone marrow mesenchymal stem cellconditioned medium was prepared. Hypertrophic scar fibroblasts were cultured in vitro with 12, 24, and 48 hour-col ected conditioned medium for 24 hours, which was compared with blank control group. The proliferation of cells was determined by CCK-8. Type I and type III col agen expression in hypertrophic scar fibroblasts was detected using real-time PCR.
RESULTS AND CONCLUSION:Compared with the blank control group, 24 and 48 hour-col ected conditioned medium significantly inhibited the proliferation of hypertrophic scar fibroblasts (P<0.01), and also suppressed col agen synthesis of hypertrophic scar fibroblasts (P<0.01). Results suggested that bone marrow mesenchymal stem cellconditioned medium inhibited the proliferation and col agen synthesis of hypertrophic scar fibroblasts by secreting anti-fibrotic bioactive factors, which may provide new theoretical supports for celltherapy to reduce cutaneous scarring.

A child case of acute myocardial ischemia induced by symptomatic myocardial bridge (SMB)was reported and relevant literatures were reviewed in this article.The case and literatures indicate that myocardial bridge is a rare congenital coronary artery anomaly in children.The pathogenesis may be related to stenosis,spasm,arteriosclerosis of coronary artery because of myocardial bridge compression during systole.Clinical manifestations include chest pain,malignant arrhythmia,syncope,cardiac arrest and myocardial infarction.The diagnosis of myocardial bridge is based on cardiac imaging.SMB patients should be first treated with β-adrenergic; if ineffective,surgical treatment or implantable automated cardiac defibrillator shonld be chosen.The patients complicated with hypertrophic cardiomyopathy have worse conditions with high mortality.

Objective To discuss the safety and efficacy of straight light beam greenlight photoselective vaporesection of the prostate (PVRP) and photoselective vaporization of the prostate (PVP) in treatment of benign prostatic hyperplasia. Methods 113 cases of BPH were randomly divided into two groups, 62 cases in PVRP group and 51cases in PVP group. Clinical data was collected and compared between the two groups, including pre-operation and six month after operation international prostate symptom score (IPSS), quality of life (QOL), urine flow rate (Qmax), postvoid residual urine (PVR), as well as operational time, operative bleeding volume, bladder irrigation time, indwelling catheter time after operation and complications after operation. Results All the patients were operated successfully without serious complications. There was significant difference in operative time [(49.4 ± 18.9) min vs (75.1 ± 20.7) min (P < 0.05)] between the two groups. There were no significant difference in blood loss and bladder washing time after operation. The Qmax after 6 months of surgery, PVR, IPSS, QOL of the two groups had significantly improved compared with preoperative (P < 0.05), while the difference between the two groups had no significance in statistics (P > 0.05). Conclusions Treatment of straight light beam greenlight PVRP and PVP are safe and effective for BPH. Straight light beam greenlight PVRP has the advantages of shorter operation time.

Objective:To study effects of neuroligin (NLG) on the proliferation and apoptosis in human neuroblastoma SH-SY5Y cells.Methods:The SH-SY5Y cells were cultured in vitro for 24 hours,and then transfected with NLG siRNA at dose of 50,100,200 μmol/L,respectively.MTT procedure was used to detect the cell proliferation,and expression levels of apoptosis gene including Bax or Bcl-2 and Bcl-xl were measured by RT-PCR.Results:Compared to control groups proliferation of SH-SY5Y cells were distinctly inhibited after NLG siRNA transfection accompany with a dose-dependent,which was caused by activation of apoptosis.Conclusions:NLG protect neuron by inhibiting apoptosis.

Objective To explore the expression of sex determining region Y-box 18 (SOX18) in prostate cancer(PCa) and its role on prostate cancer cells.Methods The expression of SOX18 in 98 PCa tissues and 81 adjacent non-tumor tissues was detected by immunohistochemistry.The expression of SOX18 mRNA and protein in PCa cell lines were detected by q-PCR and Western blotting analysis,respectively.After knocking down SOX18 with si-RNA,the proliferation,migration and invasion of PCa cells were analyzed by CCK8,Transwell and Matrigel assays in vitro.Results The rate of high SOX18 expression in prostate cancer tissues was 73.5％ (72/98),which was higher than that in adjacent normal tissues (43.2％,35/81) (P ＜ 0.01).In addition,the rates of high SOX18 expression in clinical stage Ⅲ-Ⅳ [83.7 ％ (36/43) vs.65.5 ％ (36/55),x2 =4.131,P =0.042],pathological grading G3-4 [88.6％ (39/ 44) vs.61.7％ (33/54),x2 =9.424,P =0.002] and Gleason scores ≥ 8 [85.0％ (34/40) vs.65.0％ (38/58),x2 =4.610,P =0.032] groups were higher than those in clinical stage Ⅲ-Ⅳ,pathological grading G1-2 and Gleason scores ≤7 groups.However,there were no differences in the rate of high SOX18 expression in different age groups [77.3％ (38/54) vs.70.4％ (34/44),x2 =0.539,P =0.441].Knockdown of SOX18 notably suppressed the proliferation,migration and invasion of prostate cancer cells.Conclusions SOX18 is over-expressed in prostate cancer,and could promote the proliferation,migration and invasion ability of prostate cancer cells.