Objective To determine the value of detection of micrometastasis in peripheral blood to hepatocellular carcinoma (HCC) metastasis or recurrence. Methods Reviewed the related literatures, the methods and significances of the detection of HCC micrometastasis in peripheral blood were analyzed. Results Currently, there are mainly two methods, hematogenous dissemination cell detection and HCC specific mRNA biomarker detection, for detection of HCC micrometastasis in peripheral blood. Theoretically, although they are considered as early detections of HCC metastasis or recurrence, researches still not have a abroad agreeable conclusion from different studies. After adjusting and improving the methods and detection time, different studies also have not gotten a quite consistent conclusion. Conclusion There is a great significance in detection of HCC micrometastasis in peripheral blood to understanding the mechanisms of HCC metatasis and recurrence, and also to improving the clinical therapy. Theoretically and practically, the method should be improved for facilitating the mechanism research of HCC metastasis and recurrence, and the application of detection.

Objective To evaluate the long-term clinical outcomes between laparoscopic gastrectomy and open gastrectomy with D2 lymph dissection for advanced gastric cancer.Methods Clinical studies that compared clinical outcomes of laparoscopic gastrectomy and open gastrectomy for advanced gastric cancer were searched from PubMed,EMBASE,Medline,Cochrane Library,WanFang,CNKI,CMCC and VIP database with the Gastric neoplasms Laparoscopy Gastrectomy Long-term outcomes Meta-analysis between Jan.2002 and Oct.2016.Data of long-term survival and recurrence were analyzed by using of RevMan 5.2 software.Survival data were present by the odds ratio(OR) and 95％ CI.The heterogeneity of the data was analyzed using the I2 test.Results Fifteen studies including 4,053 cases were enrolled.There were 2,091 patients in LG group and 1,962 patients in the open gastrectomy group.There was no significant difference in the 3-year overall survival rate(OR =1.00,95％ CI:0.83-1.20,P =0.98),5-year overall survival rate (OR =1.14,95％ CI:0.95-1.36,P =0.15),5-year disease-free survival rate(OR =1.13,95％ CI:0.93 ～ 1.39,P =0.22)and cancer recurrence rate (OR =0.96,95％ CI:0.79 ～ 1.18,P =0.71)between the patients treated with laparoscopic gastrectomy,or open gastrectomy (P ＞ 0.05).Conclusion Laparoscopic gastrectomy with D2 lymph dissection for advanced gastric cancer has similar long-term outcomes as compared to open gastrectomy.

Objective To investigate the association between single nucleotide polymorphisms (SNPs) of ATP-binding cassette B1 (ABCB1),ATP-binding cassette C2 (ABCC2) and solute carrier organic anion transporter 1B1 (SLCO1 B1) genes with high dose methotrexate (HDMTX)-induced toxicity in children with acute lymphoblastic leukemia (ALL).Methods This study was designed as a casecontrol.From September of 2005 to December of 2011,the blood samples were randomly collected from 142ALL patients from Nanjing Children's Hospital,Enzyme-multiplied immunoassay technique (EMIT) was used to measure the plasma concentration of MTX,Seven SNPs in ABCB1 (rs1045642,rs2032582,rs1128503),ABCC2 (rs717620,rs2273697) and SLCO1 B1 (rs4149081,rs11045879) genes were detected by polymerase chain reaction-ligase detection reaction (PCR-LDR).Results A significantly increased risk of MTX-induced toxicity was observed in patients with MTX elimination delay (OR ＝ 2.828,95％ CI:1.217-6.571,P ＜ 0.05).Two SNPs in SLCO1B1,rs4149081 and rs11045879 were linkage disequilibrium (LD) with each other (R2 =0.979,P ＜ 0.05).Multivariate analysis revealed that individuals with SLCO1B1 rs4149081 AA genotype or SLCO1B1 rs11045879 CC genotype showed increased incidence of MTX elimination delay (OR =4.41,95％ CI:1.537-12.654,P =0.042),and the two genotypes were also associated with significantly increased risk of MTX-induced toxicity (OR =4.118,95％ CI:1.135-14.944,P =0.022).No association of MTX elimination delay or MTX-induced toxicity with the other SNPs analyzed was found.Conclusions SLCO1B1 rs4149081 AA or SLCO1B1 rs11045879 CC genotypes might be a risk factor for the susceptibility to MTX-induced toxicity in children with ALL.

Objective To investigate the role of Rho/Rho kinase -associated cell migration of hepatic carcinoma cell line and inhibition of tumor cell invasion by Rho kinase inhibitor Y-27632. Methods Western blot was used to estimate the expression of Rho protein in the cells. After treatment of SMMC7721 cell with Y-27632, cell biological behaviors such as colony-forming efficiency, adhesiveness, cell motility, in vitro invasiveness, metastatic potential were observed. Results The ability of Y-27632 treated SMMC7721 cells to invade the reconstituted basement membrane decreased significantly ( P

Hydrogen evolution from water electrolysis is one of the effective ways to obtain clean hydrogen energy in the future. Pt-based materials are the efficient catalysts in hydrogen evolution reaction, but it is expensive, difficult to recycle, which impedes its application in the development of hydrogen energy and economy. Therefore, it is the key trend to develop efficient non-noble metal electrocatalysts with the aim of providing cost-competitive hydrogen energy. In this review, we highlighted the recent research efforts toward the synthesis of noble metal-free electrocatalysts for the hydrogen evolution reaction ( HER) , mainly focusing on nanomaterial catalysts supported on carbon fiber materials. We reviewed several important kinds of heterogeneous non-noble metal electrocatalysts, including sulfides, selenides, carbides, phosphides, and oxides. In the discussion, emphasis was given to the synthetic methods of these HER electrocatalysts, and the strategies for performance improvement. In addition, this paper also briefly summarized the application of carbon fiber material as substrate in the field of electroanalytical chemistry.

The microfluidic channels integrated with microring resonator were designed. The salt coalescence on chip surface caused by liquid volatilization in open environment was avoided and only 30 μL of reaction solution was consumed. These channels significantly reduced the experiment cost. The design, fabrication and characterization of a highly sensitive and label-free silicon-on-insulator (SOI) microring optical resonator integrated with the microfluidic channels were demonstrated. The radius of the microring was 5 μm and the straight waveguide with a width of 450 nm was employed in the microring resonator. The microring resonator device had many advantages such as high sensitivity, label-free and real-time detection. Using different concentrations of ethanol solution with known refractive indices, the refractive index detection sensitivity was 76.09 nm/RIU and the volume refractive index detection limit was 5.25×10Symbolm_4 RIU. We also demonstrated the label-free quantitative specific detections of human immunoglobulin G (IgG) solutions using an antibody-modified microring resonator by measuring the resonance wavelength shift resulting from refraction index changes causing by the immobilization of antibodies and specific recognition between antibodies and antigens, respectively. The results showed that the microring optical resonator could real-time monitor the reaction between biological molecules, the resonator could be used in the quantitative detection and biological sensing.

Objective To investigate the role and the mechanism of Apr-1 gene on cholangiocarcinoma QBC939 cell lines proliferation and cell cycle regulation. Methods Apr-1 gene was transfected into QBC939 cells by using liposomes to establish a QBC939 cell model ( QBC939-Apr-1 ) stably expressing Apr-1 gene. Apr-1 mRNA expression and the changes in cell cycle and cell growth of QBC939 cells were analyzed by RT-PCR, flow cytometry ( FCM ) and growth curve before and after transfection. The regulatory effect of Apr-1 gene on the expression of cell cycle-related genes was investigated in QBC939 cells before and after Apr-1 transfection using cell cycle gene microarrays. Results Significant suppression of cell growth was observed with the cell model stably expressing Apr-1 gene. Apr-1 over-expression caused cell arrest from 9% to 13% (P ＜0. 01 ) increase in G2 population. Cell cycle gene microarrays demonstrated that the expression of Skp2 、UBE1 was up-regulated, while the expression of MRE11A 、CKS2 、CDK8 、CDC45 was down-regulated by more than 3 folds. Conclusions Apr-1 gene suppresses QBC939 cell proliferation in vitro, QBC939 cells presented with differences in the expression of cell cycle-related genes after Apr-1 gene transfection.

Objective To investigate the expression and the early diagnostic significance of heat shock protein 70 in acute allograft rejection of liver-transplamed rats. Methods The model of rat orthotopic liver transplantation was made by using a modified "two-cuff technique". The rats were randomly divided into 3 groups. For each group, donors and receptors all included 15 rats respectively. The control group: Wistar to Wistar liver transplantation; The untreated group: SD to Wistar liver transplantation, not receiving any immunosuppressant after liver transplantation; The treatment group: SD to Wistar liver transplantation, receiving intramuscular injection of tacrolimus (FKS06, 2mg kg-1. day-1) after operation. Five rats were executed randomly in every group on the post-transplantation day 3, 5 and 7 and the graft samples were obtained for optical microscopic observation. The expression of HSPT0 in grafts was detected by using immunohistochemical method and RT-PCR. The correlation between acute rejection following liver transplantation and the expression of HSP70 in grafted liver was studied. Results There was no acute rejection examined in the control group. The untreated group showed typical allograft rejection and the rejection activity index (RIA) went up gradually after the operation (P<0.01). The treatment group showed no rejection or borderline allograft rejection. The level of HSP70 was increased transiently after operation, then reduced in the control group (P<0.05). The level of HSP70 in the untreated group was higher than in the control groupand gradually increased with the prolongation of time after transplantation (P<0.01). A significant correlation was found between HSP70 and pathological score in the untreated group (P<0.01). The treatment group showed low levels of HSP70 of all the time. Conclusions The expression of HSP70 in grafts is closely related to the occurrence and development of the acute rejection and can be useful for early diagnosis of acute allograft rejection following liver transplantation.

Objective　To investigate the relationship between canceration and primary operation mode for congenital choledochal cysts(CCC). Methods　The clinical data of 21 patients with CCC treated in the last 30 years were analysed retrospectively. Results　In this series, the incidence of carcinoma was 14.8%; the canceration rate after internal drainage operation was significantly higher than that after resection of the cyst(P<0.001); the age of canceration after internal drainage was younger than that of resection of the cyst(P<0.01) and patients without operation(P<0.01); the interval time of canceration after internal drainage operation was significantly less than that of resection of the cyst(P<0.01); the age of carcinoma would be 15.4 years younger in internal drainage operation patients than that in patients without operation. Conclusions　Internal drainage, which could accelerate the occurrence of canceration of CCC, should be abandoned; resection of the cyst is recommended as the therapy of the first choice.

ObjectiveTo study the synergistic effect of p38MAPK and ERK1/2 in bone marrow mesenchymal stem cells (BMSCs), and to explore their influence on osteogenic differentiation in BMSCs cultures. MethodsMouse BMSCs were cultured in phenol red-free α-MEM containing osteogenic supplements (OS) for inducing osteogenic differentiation. The temporal sequence of osteogenic differentiation in BMSCs cultures was assayed by measuring alkaline phosphatase activity (ALP) and calcium deposition gene expression. The activation of p38MAPK and ERK1/2 was detected by western blotting using phospho-specific MAP kinase antibody. BMSCs were treated with the inhibitor of p38MAPK pathway(SB203580) or ERK1/2 pathway (PD98059), and osteogenic differentiation was measured. BMSCs were treated with SB203580 or sodium arsenite(ARS), a strong activator of p38MAPK, and the phosphorylation of ERK 1/2 was measured. BMSCs were treated with PP2A inhibitor, Okadaic acid(OA), the phosphorylation of ERK1/2 and osteogenic differentiation were measured. lmmunoprecipitation was used to test the binding interaction between PP2A and ERK1/2, and the effect of SB203580 on the interaction. ResultsTreatment of BMSCs with osteogenic supplements resulted in activation of p38MAPK and ERK1/2 that coincided with osteogenic differentiation. Inhibition of p38MAPK activation by SB203580, blocked the osteogenic differentiation, whereas inhibition of ERK1/2 activation by PD98059, enhanced the osteogenic differentiation in a dose-dependent manner.SB203580 treatment resulted in increased ERK1/2 phosphorylation. By contrast, ARS treatment resulted in decreased ERK1/2 phosphorylation. Inhibition of PP2A by OA resulted in increased ERK1/2 phosphorylation. OS-induced osteogenic differentiation was also attenuated by PP2A inhibition. Immunoprecipitation confirmed the association of PP2A with ERK1/2 in BMSCs cultures, which was decreased by SB203580 treatment. ConclusionThe present study demonstrates a synergistic effect between p38MAPK and ERK1/2 signaling pathways via PP2A in BMSCs cultures, which may regulate the osteogenic differentiation of BMSCs.