Animals ; Hindlimb ; blood supply ; Ischemic Preconditioning ; Lung ; metabolism ; Male ; P-Selectin ; metabolism ; Rats ; Rats, Wistar ; Reperfusion Injury ; metabolism

0.05].The mean follow-up of 45 pat ients is 36(1～76) months.No local tumor recurrence has been noted. C onclusionsNSS can be performed with satisfactory result in RAML,and it is the first choice of surgical treatment.

Objective To construct the eukaryotic plasmid expression vector mediated short hairpin RNA(shRNA) interference targeting TLR4 gene,and transfect it into pancreatic adenocarcinoma cell line PANC1,then screen stably transfected clonal cell line.Methods Three shRNA interference expression plasmid vectors targeting the TLR4 gene were constructed,named TLR4-1,TLR4-2,TLR4-3.The shRNA plasmid with highest inhibitory efficiency was selected and transfected into PANC1 cells with liposome.The silencing efficiency and transfection efficiency of TLR4-shRNA was assayed with real-time quantitative PCR and flow cytometry analysis.Monoclonal cell with stable transfection of TLR4-shRNA were selected by geneticin 418 (C418) and limiting dilution analysis.Results Transient transfection efficiency of PANC1 was (46.72 ±5.06) ％.TLR4 mRNA expressions were 0.025 ± 0.004,0.027 ± 0.003,0.019 ± 0.006in cells transfected with TLR4-1,TLR4-2,TLR4-3,respectively,which were significantly lower than that in untransfected group (0.061 ±0.018) and negative control group (0.057 ±0.015,P ＜0.05).The transfection efficiency of TLR4-3 vector in stably transfected clones [(82.79 ±8.16)％] was significantly higher than that of transient transfection (P =0.001 ).The expression of TLR4 mRNA was decreased to 0.010 ± 0.002,which was significantly lower than that of transient transfection ( P =0.001 ).The expression of TLR4 protein was (0.54±0.32) ％,which was significantly lower than that of untransfected cells [( 87.42 ± 5.00 ) ％] and that of negative control [(82.9±5.00)％,P =0.000].Conclusions Stable transfection PANC1 cell lines with TLR4 gene silencing are successfully identified.

Objective To investigate the effects of intra-articular injection of ropivacaine plus compound betamethasone after arthroscopic debridement for knee osteoarthritis.Methods A total of 164 patients with knee osteoarthritis after arthroscopic debridement were randomly divided into three groups:combination group (n=62) treated by 2 ml sodium hyaluronate and 0.75％ ropivacaine of 5 ml plus 1 ml compound betamethasone,compound betamethasone group (n=54) by 2 ml sodium hyaluronate and 1 ml compound betamethasone,control group (n=48) by simply sodium hyaluronate.The Lequesne Index was used to evaluate the clinical effects before and 1 week,6 weeks and 12 weeks after operation.All patients received at least 12 weeks follow-up Results According to Lequesne Index score criteria,a significant decrease was found in all groups before versus after operation(P＜0.05).The clinical effects in combination group and compound betamethasone group were more improved as compared with control group at 1,6 and 12 weeks after operation (P＜0.05).The effect in combination group was better than compound betamethasone group at 1 and 6 weeks after operation,but not at 12 weeks (P＞0.05).Conclusions The intra-articular injection of ropivacaine plus compound betamethasone after arthroscopic debridement is a good method for relieving pain and improving the knee function.

Objective To investigate the effects of radiofrequency thermocoagulation in relieving refractory pain of knee osteoarthritis in older patients.Methods A total of 18 patients with refractory pain of knee osteoarthritis were under treatment of radiofrequency thermocoagulation to denervation and compared to 20 patients with refractory pain of knee osteoarthritis which were under treatment of arthroscopy combined with compound betamethasone (control group).The Oxford knee score and visual analogue scale were used to evaluate the clinical effects before operation,at 1 week,4 weeks and 12 weeks after operation.Results There were significant decreases in both groups after operation than before operation(Foxford ＝4.12,3.98,FVAS ＝3.98,4.11,both P＜0.05),but there were no statistics differences between radiofrequency thermocoagulation group and control group at 1 week,4 weeks and 12 weeks after operation(toxford ＝ 1.215,1.426; tVAS＝1.319,1.123,0.867,P＞0.05).Conclusions The treatment of radiofrequency thermocoagulation is a minimally invasive method,which can relieve refractory pain of knee osteoarthritis in middle and older patients and recover knee function effectively.

Medical microbiology is basic course of medicine.In order to improve teaching quality,we employ discussing-mode education in microbiology.This education style can not only enlighten and train poly-directional thought ability,capacity of bringing forth new ideas and pioneering spirit,but draw close the distance between students and modern life science,which make microbiological course become beginning of exploring microbiology.The employment of education style of discussing microbiology new advance is effective pathway of exploring most suitable high-quality person of talent training.

Iron uptake mechanism of Vibrio alginolyticus was primarily investigated. V.alginolyticus could survive in the medium with high-concentration iron chelator. The strain of V. alginolyticus isolated from diseased fish produced more siderophore than that from marine environment. The extract of siderophore from V. alginolyticus could stimulate the growth of Escherichia coli mutant AN93. Under iron limitation,the growth rate was decreased and several outer membrane proteins were induced. Adding iron into the iron-limited medium the normal growth could be recovered.

Objective To investigate the effect of Prunellu vulgaris L.extracts on isolated rabbit artery. Methods The effect of Prunellu vulgaris L.extracts on the contraction curve caused by norepinephrine (NE) was recorded on isolated rabbit artery. Results The contraction curve moved to the right and the maximum contraction range was decreased by chloroform extract, butanol extract and ethyl acetate extract; the contraction curve had no move by aquatic extract. Conclusion Prunellu vulgaris L. has the effect of dilating artery and reducing blood pressure.

Objective To evaluate the endoscopic managements of acute cholangitis of severe type (ACST) accompanied with multiple organ dysfunction syndrome (MODS). Methods A total of 122 ACST patients accompanied with MODS from January 2000 to October 2008 underwent endoscopic treatment in two time periods. In critical phase, emergent endoscopic retrograde cholangiopancreatography (ERCP) plus en-doscopic naso-biliary drainage (ENBD) were performed to correct critical situation of the patients. After sta-bilization, endoscopic sphincterotomy (EST) plus stone removal, EST plus stent placement, or laparoscopy was performed according to the causes of ACST. Results Emergent endoscopic managements succeeded in all patients of critical phase. At third day post-operation, a reduction in white blood cell count, serum total bilirubin, body temperature, and rate of patients with shock, mental symptoms and purulent bile juice was a-chieved. Recovery rate of dysfunction organs was 60.2% at one week after emergent procedure, and 82. 6% at 2 weeks post-operation. Selective EST plus stone removal was performed in 36 patients with a success rate n one session at 91.7%. Laparoscopic cholecystectomy was performed in 85 patients with a success rate of 95.3%. Stent was placed in 16 patients with an effective rate of 81.3% at 3 months post the procedure. No severe complication or death occurred during the whole therapeutic course. The 6-month survival rate of 10 cancer cases was 70%. Conclusion Therapeutic ERCP plus ENBD is the first choice for acute severe cholangitis accompanied with MODS, while EST plus biliary lithotomy, or EST plus stent placement, or com-bined laparoscopy are ideal methods for subsequent treatment.

Objective To investigate the effects of Dangshen (DS) extract saponins alleviating apoptosis in ischemia-reperfusion injury (I/R) of renal grafts and the mechanism. Methods The I/R injury model in SD rats was established after kidney transplantation. The SD rats were randomly divided into the following 3 groups (n = 20): sham operation group, I/R model group, DS saponin intervention group. Blood urea nitrogen (Bun) and creatinine (Scr) levels were determined at the 24th h after operation; apoptosis index (AI) was detected by using TUNEL method; the expression of Bcl2 and bax mRNA was detected by RT-PCR. Results As compared with the sham operation group,the blood Bun and Scr levels were significantly increased in the I/R model and DS saponin intervention groups (P＜0. 05). As compared with the DS saponin intervention group, the blood Bun and Scr levels were significantly increased in the I/R group (P＜0.05). The AI was significantly increased in the I/R model group and DS saponin intervention group. After DS saponin intervention, the AI was decreased from 40. 28 % in the I/R model group to 28. 45 % in the DS saponin intervention group (P＜0. 05). The expression of Bcl-2 mRNA in DS saponin intervention group and I/R model group was significantly decreased as compared with the sham operation group (P＜0. 05), but that of Bax mRNA was significantly increased in the I/R model group and DS saponin intervention group as compared with the sham operation group (P＜0. 05). After DS saponin intervention, the expression of Bcl-2mRNA was increased from 0. 25 in the I/R model group to 0. 391 (P＜0. 05), and that of Bax mRNA was decreased from 0. 565 in the I/R model group to 0. 473 (P＜0. 05). Conclusion DS extract saponin could significantly alleviate apoptosis in the I/R injury of renal grafts possibly by up-regulating the expression of Bcl-2 mRNA and down-regulating the expression of Bax gene.