Objective To evaluate the effects of fructose-1,6-diphosphate (FDP) on the preservation and high-energy phosphate metabolism of hypothermic SD rat hearts. Methods Sixteen SD rats were randomly divided into 2 groups. Their hearts were harvested and preserved in UW solution at 4℃ for 12 hours. In the study group (n=8), FDP (5mmol/L) was added to the UW solution, whereas in the control group, FDP was not added. Langendorff perfusion was established with the isolated hearts, and cardiac functions were examined, as well as the activities of lactate dehydrogenase (LDH) and creatine kinase (CK) in the perfusion fluid collected from coronary. Then the high-energy phosphate concentration, ATP, ADP, and AMP contents in the myocardium were determined with HPLC. Results The high-energy phosphate concentration was remarkably higher in the study group than that in the control group (P

Objective To analyze the genotypes of adenovirus(Ad)strains isolated from young children with acute respiratory infection syndrome during 2004-2006.Methods Seven human adenovirus strains isolated during 2004 and 2006 were detected with tissue culture,PCR with adenovims specific-primers and sequencing for hexon and fiber genes.Results The results showed that all 7 adenovirus strain belonged to adenovirus genera B.3 of the 7 isolates were Ad3,BJ060605-1,BJ060316-and BJ040228 had high homology of nucleic acid.98.9%-100%.Three of 7 were Ad7,the homology of nucleic acid of BJ050520.BJ060421-4 and BJ040226 were 97.6%-100%.Strain SX060418-1 was 100% homologic with Ad11 strain L08232(GenBank).Conclusion Little variation of fiber gene was found for 2004 to 2006 isolares and the typing with fiber sequencing is similar with that of hexon gene of adenovirus isolates.

Objective To synthetically evaluate the relationship between miR-31 and the prognosis of carcinoma and to investi-gate its related mechanism.Methods The correlative literatures of tumor prognosis were retrieved from the electronic databases PubMed,EMBASE and ISI Web of Science.The pooled hazard ratios (HRs)and 95% confidence interval(95%CI )were extracted. The prognostic data were performed the synthesis analysis.Results A total of 7 trials conformed to the inclusion criteria including accumulated 2 012 cases of carcinoma.Meta-analysis revealed that the decrease of miR-31 expression in the tumor patients had the poor prognosis (HR=0.784,95%CI :0.630-0.974);in the subgroup analysis,the synthesis results adopting the multivariable a-nalysis and China subjects were 3.512 (95%CI :1.797-6.865)and 1.574 (95%CI :1.062-2.333),which indicating that the in-crease of miR-31 expression predicted the poor prognosis;miR-31 had no statistical significance in the digestive system (P >0.05). Conclusion The prognostic role of miR-31 may possess the histological and regional specificity and has the potential as a novel marker.

The herpes simplex virus type 1 (HSV-1) infected-cell protein 27 (ICP27) is an essential,highly conserved protein involved in various steps of HSV-1 gene regulation as well as in the shut-off of host gene expression during infection.It functions primarily at the post-transcriptional level in inhibiting precursor mRNA splicing and in promoting nuclear export of viral transcripts.Recently,many novel functions performed by the HSV-1 ICP27 protein were shown,including leptomycin B resistance,inhibition of the type I interferon signaling,regulation of the viral mRNA translation and determining the composition of HSV-1 virions.

Objective To investigate the efficacy of endoscopy for the treatment of benign biliary stricture after biliary surgery.Methods The clinical data of 127 patients with benign biliary stricture after biliary surgery at the First Hospital of Lanzhou University from January 2007 to December 2011 were retrospectively analyzed.According to the Bismuth classification,there were 60 patients with type Ⅰ,35 with type Ⅱ,21 with type Ⅲ and 11 with type Ⅳ.The efficacies of endoscopy for the treatment of biliary stricture with different Bismuth subtypes were analyzed.Results The location and severity of biliary stricture were confirmed by endoscopic retrograde cholangiopancreatography (ERCP) + cholangiography.Sixteen patients ( including 7 with type Ⅲ and 9 with type Ⅳ) were transferred to surgical treatment due to severe biliary stricture.A total of 111 patients underwent endoscopic treatment successfully,with the success rate of 87.4％ (111/127).The success rates of endoscopy for the treatment of patients with Bismuth Ⅰ,Ⅱ,Ⅲ and Ⅳ biliary strictures were 95％ (57/60),86％ (30/35),9/14and 1/2,respectively.Twenty-nine patients were implanted with retrievable metallic biliary stent,and 82 were implantated with plastic biliary stent.Of the 111 patients,only 6 patients were complicated by acute pancreatitis,and they were cured by conservative treatment.The alleviative rates of yellow skin and icteric sclera,tenderness and distending pain of right upper quadrant,fever were 73％ (81/111 ),83％ (74/89),90％ (73/81 ) and 89％(68/76) at 1 week after treatment,and they were 88％ (98/111),91％ (81/89),94％ (76/81) and 92％(70/76) at 8 weeks after treatment.The efficacy of endoscopy was good in 97 patients and poor in 14 patients,and the 14 patients were converted to open surgery.The symptoms including yellow skin and icteric sclera,tenderness and distending pain of right upper quadrant,fever were completely alleviated at postoperative month 6.Conclusion Endoscopic treatment for benign biliary stricture is safe and effective.

Objective To investigate the expression of Oct4 in liver cancer, and the interrelation of the Oct4 and Wnt/β-catenin genes in hepatocellular carcinoma( HCC) cell line HepG2. Methods RTPCR technique was used to detect the expression of Oct4 and β-Catenin in HCC specimens; RNAi was used to knock-down the expression of Oct4 in HepG2, and the change of Wnt/β-catenin related genes were detected by Real time-PCR. Results In HCC specimens, the expression of Oct4 and β-Catenin in tumor and cirrhotic liver tissues were stronger than normal liver tissues. In SiRNA Oct4 HepG2 cells, the expression of Oct4 was downregulated, and β-catenin as well as Wnt10b were in a positive correlation with Oct4, TCF3 was in negative correlation with Oct4. Clone formation and move ability of the HepG2 were downregulated. Conclusions The expression of Oct4 was higher in tumor tissues than in normal liver tissues. Silencing Oct4 by SiRNA-0ct4 in HepG2 resulted in decreased ability of clone formation and cell movement.

Codon bias is an important factor which influences heterologous gene expression. Optimizing codon sequence could improve expression level of heterologous gene. In order to improve the expression level of BmK AngM1 gene encoding the analgesic peptide from Buthus martensii Karsch in Pichia pastoris, the codon-optimized BmK AngM1 gene according to its cDNA sequence and the preference codon usage of P. pastoris were cloned into expression vector pPIC9K and then transformed into P. pastoris. The expersion of recombinant BmK AngM1 (rBmK AngM1) was inducced by methanol in the medium, and the expression level of the optimized BmK AngM1 gene was 3.7 times of the native one. These results suggested that the expression of BmK AngM1 in P. pastoris could be successfully improved by codon optimization.

Objective To evaluate the contrast enhanced perfusion pattern of PTC micro-vascular imaging (MVI) quantitatively.Investigate the correlation between PTC MVI features and CD34 micro-vascular density (MVD).Methods Thirty-nine pathological and clinical confirmed sporadic PTCs were evaluated with real-time gray-scale contrast-ernhanced micro-vascular imaging under a low mechanical index.The micro-bubble agent was SoneVue.Of the 39 PTCs,33 were classical PTCs,6 were PTC with follicular variant (FVPTC).The △ ROI,which is the subtraction of peak echo intensity between the lesion region of interest (ROI) and normal thyroid parenchyma ROI,was used to evaluate the perfusion characteristics of PTC MVI quantitatively.The paraffined specimens were selected for immunohistochemical (IHC) staining for CD3,and the correlation between △ ROI and the CD34 were evaluated.Results △ ROI was strongly correlated with the CD34 expression (P=0.000),significant differences were detected in the distribution pattern of △ ROI value among different CD34 expression levels,no overlapping of the mean △ ROI values and the 95％ confidence intervals was found among the 3 CD34 expression levels.The PTC MVI perfusion was classified into 3 patterns,low perfusion,focal perfiusion and high perfusion,on the basis of combining△ ROI values with the peak ehco pattem in time-intensity curve.Conclusions The △ ROI is strongly correlated with the CD34 expression in papillary thyroid cancer.It can be used for the quantitative evaluation ofPTC MVI pattem and intensity as an objective indicator.

ObjectiveTo investigate the correlation of ultrasonographic features of mesenteric fibromatosis and its pathological findings.MethodsTen mesenteric fibromatosis confirmed histopatho1ogica1ly in Peking Union Medical College Hospital were retrospectively reviewed.Results There were 7 females and 3 males. Their ages ranged 32~74 years (mean age 50.5±13.1 years). Of the 10 cases, 5 occurred in mesentery of the small bowels, 4 in the mesocolons, and 1 in junction portion of duodenum and jejunum. On ultrasound image, the diameters of the masses were 4.3~22.0 cm (mean 8.8±5.2 cm). 6 were regular and 4 were irregular. 9 of 10 cases were well-defined and 1 was poor defined. 6 has capsule echoic. All the 10 cases were hypoechoic. 9 presented as solid mass and 1 was solid-cystic leision. On gross pathology,they were solid, firm, grey and yellowish. Histopathology, there were boundles of fibroblasts in collagenous stroma with scarce degeneration. The cystic changes noted on sonograms corresponded histopathologically to areas of myxoid and cystic degeneration.ConclusionsMesenteric fibromatosis is a rare disease with characteristic ultrasonographic features, which were well correlated with their pathology findings. They mostly presents as well-circumscribed masses with hypoecho, regular shape and little vascularity. Ultrasound was important in the diagnosis of this disease.

ObjectiveTo investigate the status of benefit finding in diabetic patients,and mediating effect of resilience between family support and benefit finding in diabetic patients.MethodsFive hundred and thirteen diabetic patients from a hospital of Harbin were recruited as investigative subjects from September 2015 to June 2016.The resilience scale,family adaptability,cohesion scale and benefit finding scale were used in the study.ResultsThe scores of benefit finding,resilience and family adaptability and cohesion were 55.67±12.87,70.65±10.39 and 104.25±15.38,separately.The total score of family adaptability and cohesion was positively related to the total score of benefit finding(r=0.389,P<0.05).The total score of resilience was positively related to the total score of benefit finding(r=0.155,P<0.05).The total score of family adaptability and cohesion was positively related to the total score of resilience(r=0.112,P<0.05).Benefit finding as the dependent variable,the results of hierarchical regression analysis indicated that family adaptability and cohesion (β=0.382,P<0.01),resilience(β=0.098,P<0.01)entered the regression equation.There was a partial mediating effect of resilience between family support and benefit finding in diabetic patients.The mediating effect was 0.011,accounted for 2.8% of the total effect.The resilience was the important protective factor for benefit finding.ConclusionFamily support has a direct influence on benefit finding and an indirect effect mediated by resilience on benefit finding.