Objective To study the experience of laparoscopic repair in gastric and duodenum perforation. Methods 35 patients with gastric and duodenum perforation were performed laparoscopic repair.Results 34 pati- ets with gastric and duodenum perforation were safely operated.1 case with perforation of gastric carcinoma was con- verted to open for radial gastrectomy.The mean time of hospitalization was 7.5 days.There was no intraoperative and postoperative complications.Pathological examination showed 4 patients with perforation of gastric ulcer and one with perforation of gastric carcinoma.Conclusion Laparoseopic repair was one of the safe,quick recovery and little suffering treatment for duodenum perforation.

Objective To investigate the influence of Cordyceps polysaceharide (Cp) on epithelial-to-mesenchymal transition (EMT) induced by transforming growth factor-β1 (TGF-β1)in proximal tubular epithelial cells (PTEC). Methods HK-2 cell proliferation was determined by MTT assay. After incubation of HK2 cells with increasing concentrations of TGF-β1 (0, 0.1, 0.5, 1, 5, 10 μg/L) at 48 h and with TGF-β1 (5 μ/L) at different time points, E-cadherin, α-SMA, FN expression at transcriptional and protein levels were detected by real-time PCR and Western blotting respectively. The cells were pretreated with 1,5, 10 g/L Cp respectively for 24 h before adding TGF-β1 (5μg/L), then the cells were incubated for additional 48 h, mRNA and proteinexpression of above 3 cytokines was examined by real-time PCR and Western blotting as well. Results CP alone (0.01, 0.1, 1,5, 10 g/L) induced HK-2 cell proliferation in a dose-dependent manner. TGF-β1 enhanced α-SMA, FN expression while inhibited E-cedherin expression at both transcriptional and" protein level in HK-2 cell. At transcriptional level, compared to single TGF-β1 (5 μg/L) stimulating group, after Cp (1,5, 10 g/L) pretreatment for 24 h, the inhibition rate of a-SMA mRNA was 37.98%, 68.08% and 84.36%, respectively; FN mRNA was 46.97%, 63.82% and 81.85%, respectively; E-cadherin was up-regulated by 0.67 fold, 2.69 folds and 5.43 folds, respectively (P＜0.05). At protein level, the inhibition rate of α-SMA was 33.40%, 47.75% and 68.50%, respectively; FN was 16.26%, 65.92% and 80.30%, respectively; E-cadherin was up-regulated by 1.33 folds, 3.19 folds and 4.29 folds, respectively (all P＜0.05). Under Light microscopy, the Cp reversed cell shape from spindle-shape induced by TGF-β1 to nearly normal shape. Conclusion Cp may exert its inhibitive effects on TGF-β1-induced EMT.

Objective To evaluate the effectiveness of several methods in eliminating Mycoplasma contamination in cell culture of human hepatoma-derived cell line C3A. Methods PCR was performed to detect the Mycoplasmas contamination in cell cultures. The contaminated samples were treated by ciprofloxa-cin, heating, Plasmocure or co-culturing with macrophages. Transmission electron microscope ( TEM) and Q-PCR were used to comparatively analyze the cell morphology and gene expression before and after Plas-mocure treatment. Results Plasmocure succeeded in eliminating Mycoplasma contamination, while cipro-floxacin showed temporary efficacy. Heating and co-culturing with macrophages failed to eliminate Mycoplas-ma contamination. No Mycoplasma contamination in the Plasmocure-treated group was observed under TEM and the expression of ALB, TF and CYP3A4 genes were higher than the genes expressed in the contaminated group (P<0. 01). Conclusion Plasmocure treatment was effective in eliminating Mycoplasma contamina-tion in cell culture. Moreover, the cell morphology and gene expression in Plasmocure-treated group were re-stored to normal.

Objective To observe the effect of antisense hypoxia inducible factor-1?(HIF-1?) on (chemosensitivity) of human pancreatic cancer cell line BxPC-3 under hypoxia. Methods BxPC-3 cells were divided into 3 groups:(1)BxPC-3 cells were non-transfected with antisense HIF-1? plasmid and exposed to 0.5% O_2 for 4hr(hypoxia control);(2)normoxic BxPC-3 cells were non-transfected with antisense(HIF-1?) plasmid(normoxia control);(3)BxPC-3 cells were transfected with antisense HIF-1? plasmid and exposed to 0.5% O_2 for 4hr(experimental group).Expression of HIF-1? and survivin was detected by RT-PCR and Western Blot.Growth inhibition rates and apoptosis rates of BxPC-3 cells under different(dosages) of chemotherapeutic agents(5-fluorouracil,doxorubicin and gemcitabine) were measured by MTT(colorimetric) assay and flow cytometry (FCM).Results Expression of HIF-1? was obviously down-regulated and at the same time susvivin expression was markedly down-regulated in experimental group(P

Objective To construct a sirolimus loaded drug-eluting stent (DES) using chitosan/heparin coating membrane and to explore its effect on anticoagulation and early re-endothelialization in porcine coronary artery. Methods Chitosan/heparin layer-by-layer self-assembly coating was applied to sirolimus DES, and the asymmetric applicator was used to allow for the stent blood surface to be chitosan/heparin coated and the stent vascular surface to be polylactic acid (PLA)--irolimus. The experiment was divided into bare metal stent (BMS) group, chitosan/heparin stent group, sirolimus DES group and chitosan/heparin sirolimus DES group. The anticoagulation effect of chitosan/heparin sirolimus DES was tested by arteriovenous shunt model and high load thrombosis model. The effect of chitosan/heparin sirolimus DES on early re-endothelialization was tested by 1-week long balloon injury to porcine coronary artery. Results No thrombus was found on the surfaces of chitosan/heparin sirolimus DES and chitosan/heparin stent in the arteriovenous shunt model, while the surfaces of BMS and sirolimus DES were covered with thrombus. No stent thrombosiswas found in the high load thrombosis model test of chitosan/heparin sirolimusDES and chitosan/heparin stent within 6 hours, and stent thrombosis was found in BMS at (59. 0±8. 5) min and in sirolimus DES at (67. 0 ±7. 8) min (P<0. 01). Theearly re-endothelialization test showed endothelial coverage rates of chitosan/heparin sirolimus DES and chitosan/heparin stent after 7 d implantation were (82. 7± 16. 4) % and (80. 7 ± 14. 1) %, significantly higher than those of BMS and sirolimus DES ([64. 3±11]% and [59. 8±8. 4]%, respectively; P<0. 01). Conclusion Chitosan/ heparin-coated-sirolimus DES has satisfactory anticoagulation property and it can accelerate early re-endothelialization.

Objective To investigate the effect of integrin-?1 antisense oligodeoxynucleotide(ASODN) on(human) pancreatic cancinoma transplanted subcutaneously in nude mice.Methods The models of human(pancreatic) cancinoma transplanted subcutaneously were established in nude mice,then divided randomly into 3 groups and different treatment was given respectively(control group,random oligodeoxynucleotide group and ASODN group).After treatment,the weight of nude mice and tumor volume were observed,and the tumor growth inhibitory rate and the tumor response rate were calculated.The expressions of integrin-?1 mRNA and protein in tumor tissue were determined by RT-PCR and Western-blot.Results The tumor growth inhibitory rate in the random oligodexynucleotide group and the ASODN group was 4.75% and 72.70%,respectively.The tumor decrease rate of the ASODN group was 10.91%.The expression level of integrin-?1 mRNA and protein was decreased in the ASODN group compared with other 2 control groups. Conclusions Our findings suggest that integrin-?1 antisense oligodeoxynucleotides result in marked inhibition of human pancreatic(cancinoma) growth in nude mice.It may be a novel treatment approach for human pancreatic carcinoma.

Diagnosis, Differential ; Esophageal Neoplasms ; pathology ; surgery ; Granuloma, Pyogenic ; pathology ; surgery ; Hemangioma, Capillary ; pathology ; Hemangiosarcoma ; pathology ; Humans ; Male ; Middle Aged ; Sarcoma, Kaposi ; pathology

Objective To evaluate right ventricular(RV) global and regional volume and systolic function by real-time three-dimensional echocardiography (RT-3DE) in normal children with different age.Methods One hundred and ninty-two normal children were divided into five groups by age:group Ⅰ,＜1 years old,32 cases;group Ⅱ,≥1 years old-＜3 years old,46 cases;group Ⅲ,≥3 years old-＜6 years old,36 cases;group Ⅳ,≥6 years old-＜9 years old,41 cases;group Ⅴ,≥9 years old-＜14 years old,37 cases.Full volume imaging of RV was obtained at the parasternal four-chamber view near the apex by RT-3DE.RT-3DE data set were analyzed off-line by TomTec RV-Function.RV were divided into three parts:inflow,body,outflow.The measurements were including RV global and regional end-diastolic volume (EDV),end-systolic volume (ESV),ejection fraction (EF) and the ratio of regional parts EDV to RVEDV. The volume and systolic function were compared in three regional parts.RV global and regional parts EF and the ratio of regional parts EDV to RVEDV were also compared in five age groups.Correlation analysis and curve estimation were studied on RV global and regional EDV with age and physical development indexes.Results In the comparison of three regional parts:inflow EDV and EF were higher than outflow and body parts (P＜0.05).No significant different was found between outflow EDV and body EDV (P＞0.05),however,outflow EF was significant higher than body EF(P＜0.05).The comparison of RV global and regional EF in five age groups were no statistical different (P＞0.12). The ratio of regional parts EDV to RVEDV remained constant in five age groups(P＞0.58).Correlation analysis showed the global and regional RV volume were strongly correlated with age,height,weight and BSA (r＞0.77,P=0.000).The best correlation was found with BSA (r＞0.83,P=0.000).Curve estimation demonstrated that the relationship of RV global and regional EDV with age and physical development indexes could be best expressed by power model,the best matched model were found with BSA.Conclusions Among three regional parts of RV,inflow and outflow parts volume contraction were the two main contribution factors for RV function.In childhood RV volume didn't increase linearly with age and physical development indexes,but in an exponential model.

Objective To investigate spliceosome of suppresser of fused(SUFU),a major member of hedgehog signaling pathway in human pancreatic cancer.Methods SUFU fragment was amplified by using reverse transcription and 3' RACE.After sequencing,a new exon was discovered,and then nSUFU was amplified by RT-PCR.nSUFU and SUFU were transfected into SW1990 by liposomes,and then the expressions of SUFU protein encoded by new spliceosome in SW1990 cells and pancreatic cancer tissues were detected by Western blot.Results PCR products by 3'RACE were of 600 bp,after sequencing and comparison with Blast data of NCBI,it was detected that a new exon was inserted between SUFU mRNA isoforml (NM_016169.3) exon 10 and exon 11.After verification with SW1990,it was noted the entire new spliceosome containing new exon was of 1400 bp.SW1990 with nSUFU transfection strongly expressed nSUFU protein,and pancreatic cancer tissues expressed both SUFU and nSUFU protein.Conclusions A new spliceosome of SUFU,which can encode SUFU protein,is present in pancreatic cancer tissue and cell.

Objective To review the experience of surgical therapy for 113 patients with esophageal perforation or rupture re- suiting from different causes.Methods The causes resulting in esophageal perforation or rupture were summarized and the outcome of conservative and operative therapy were compared.Meanwhile,the outcome and mortality of operative therapy within or beyond 24 hours were compared.Results Twenty-eight patients with esophageal perforation or rupture occurring in the neck were all cured sue- cessfully.As for 85 patients with esophageal perforation or rupture in the chest,the curative rate of operative therapy(83.0%)was greater than that of conservative therapy(68.7 %)(P