Objective To investigate the prevention of HBV reinfection in the perioperative period of liver transplantation on HBV-related diseases.Methods Published papers were collected and reviewed.Results HBV-related diseases were the main indications of liver transplantation.The prevention for HBV reinfection affects the survivals remarkably.Nowadays,a lot of medication have been used in the prevention of HBV reinfection,and the therapeutic regimens were different from each other.Conclusion Liver transplantation is an effective treatment for HBV-related disease.Appropriate prevention of HBV reinfection in the perioperative period of liver transplantation is important for the survivals of patients.

In recent decades, the development of the neurosurgery has changed from the traditional anatomical model to the modern anatomical-functional model. The nerve functions are maximally protected while lesions are removed as far as possible. Neurophysiological monitoring especially somatosensory evoked potentials (SEPs) and motor evoked potentials (MEPs) can directly reflect the integrity of the sensory and motor nerve conduction pathways of the nervous system. At present, it has been widely used in the neurosurgery, spinal surgery, vascular surgery and other surgical fields. In recent years, more and more clinical surgeries involved spinal surgery, intraoperative neurophysiological monitoring could timely find any reversible spinal cord damage such as mechanical stretch, ischemia, and anesthetic drugs, which not only improve the quality of surgery, reduce iatrogenic spinal cord injury, but also greatly improve the prognosis of patients and reduce postoperative neurological dysfunction and complications. In this paper, the research progress of neural electrophysiological monitoring techniques in spinal cord surgery is reviewed.

Objective To observe the clinical effect of sodium ozagrel combined with cinepazide treatment of cerebral arteriosclerosis , and the influence on hemorheology and blood lipid.Methods 112 cases of arteriosclerosis in patients with cerebral infarction were randomly selected from January 2015 to January 2016 in our hospital, and were randomly divided into observation group and control group ,56 cases in each group, the control group were treated with cinepazide treatment, patients in the observation group was combined with ozagrel sodium, clinical curative effect and blood rheology were compared between the two groups study, blood lipid.Results The observation group the total efficiency was significantly higher than the control group ( P<0.05 ) .After treatment, compared with before treatment, blood rheology parameters and blood lipid levels of two groups were significantly improved ( P<0.05 ) , and the patients in the observation group improved the hemorheological parameters and blood lipid level was significantly better than the control group ( P<0.05 ) .Conclusion Ozagrel sodium combined with cinepazide maleate in the treatment of cerebral arteriosclerosis process,can significantly improve the hemorheological parameters and blood lipids, and the clinical curative effect.

Immunological rejection is the major barrier to successful transplantation.The immune response to an allograft is an ongoing dialogue between the innate and adaptive immune system that will lead to the rejection of allograft.Activation of elements of the innate immune system,triggered as a consequence of tissue injury sustained during cell isolation or organ retrieval and ischemia reperfusion,will initiate and amplify the adaptive response.Identifying the molecular pathways that trigger tissue injury,signal transduction and rejection facilitates the identification of targets for the development of immunosuppressants.

With the continuous development of the cancer stem cell theory,biomarkers for CSCs (Cancer stem cells) have gradually become the hot issues in tumor research.As the most commonly used CSCs biomarker,CD44 gains lots of attentions.This paper will review recent research about CD44 molecule and its powerful role in regulating tumor progenesis and progression.

Objective To construct a RhoA-siRNA expression vector and determine its role on the malig-nant behavior of HepG2 cells.Methods A RhoA-siRNA DNA fragment was synthesized and cloned into the expression vector of pGenesil-1.The constructed Rhon-siRNA DNA plasmid was stably transfected into HerG2 cells by lipofectamine,and then HepG2 cells were divided into the HepG2/RhoA-siRNA group (HepG2 cells were transfected with pGenesil-1-RhoA-siRNA),HepG2/control group(HepG2 cells were transfected with control plasmid) and HepG2 group (without plasmid transfection).The inbibitory effect of RhoA-siRNA on RhoA protein expression was shown by Western blot.The proliferation,migration,growth potentiality and cell cycle of transfected HepG2 cells were evaluated by MTT assay,wounded healing,the plate cloning formation test and flow cytometry,respectively.All data were analyzed by one-way analysis of variance (ANOVA) and chi-square test.Results The expression of RhoA protein in the HepG2/RhoA-siRNA group was,significantly decreased compared with that in the other two groups (F=178.19,P<0.05).Scratched cells were healed within 48 hours in the HepG2/control group and HepG2 group,but not in the HepG2/RhoA-siRNA group.The clone formation rates in the HepG2/RhoA-siRNA group,HepG2 group and HepG2/control group were 39%±3%,67%±5%and 70%±6%,respectively,with a significant difference among the three groups(χ2=33.34,38.69,P<0.05).Flow cytometry showed that the number of cells transfected with RhoA-siRNA was highest in the G0/G1 phase and lowest in the S phase(F=70.46,76.57.P<0.05).Conclusion The RhoA-siRNA expression vector can effectively suppress the proliferation and migration of HepG2 cells,which may provide a novel gene therapy for hepatocellular carcinoma.

Objective To investigate the preventive effects of phytosterol on lipid metabolic disturbance of rats fed with high-fat diet. Methods Forty male SD rats were randomly divided into control group (fed with basic diet), high-fat model group (fed with high-fat diet), low phytosterol group( fed with high-fat diet and 100 mg/kg phytosterol) and high phytosterol group( fed with high-fat diet and 200 mg/kg phytosterol). Body weight, serum lipid, liver fat and body fat were measured at the end of experiment (6 weeks later). Results At the end of experiment, the body weight, contents of liver fat and body fat and serum TC, TG and LDL-C levels were significantly higher in high-fat model group, low phytosterol group and high phytosterol group than those in control group (P <0.05), while serum HDL-C levels in these three groups were significantly lower than that in control group (P < 0.05). Compared with high-fat model group, the body weight gain and content of body fat of high phytosterol group were significantly lower (P <0.05). The contents of liver fat and serum TC, TG and LDL-C levels in low phytosterol group and high phytosterol group were significantly lower than those of high-fat model group (P < 0.05). Conclusion Phytosterol could prevent lipid metabolic disturbance of rats fed with high-fat diet. High dose phytosterol has the potential to reduce the body weight gain and contents of body fat of rats fed with high-fat diet.

Objective To explore the clinical effect of transjugular intrahepatic portosystemic shunt (TIPS) and percutaneous transhepatic variceal embolization (PTVE) on the treatment of cirrhosis with esophageal gastric varices bleeding. Methods The data of 61 patients of liver cirrhosis combined with esophageal gastric varices bleeding who underwent the interventional treatment were included in the retrospective analysis. Patients were divided into two groups, PTVE treatment group (n=42), and TIPS treatment group (n=19). The success rate of clinical treatment, the rebleeding rate, the alleviation of varicose veins, the incidence of hepatic encephalopathy, survival rate and liver function parameters were compared between two groups. Results Two groups of surgery were successful. The portal vein pressure decreased obviously in TIPS group. The rebleeding rate was higher in PTVE group (78.6%) than that in TIPS group (63.2%). The total alleviation rate of esophageal gastric varices was significantly lower in PTVE group (50.0%) than that in TIPS group (89.5%, P<0.05). The incidence rates of hepatic encephalopathy were 14.3% and 26.3% for PTVE group and TIPS group respectively. The two-year cumulative survival rates of PTVE group and TIPS group were 95.2% and 89.5% respectively, and there was no statistically significant difference between two groups. After surgery, the liver function parameters were not significantly different from those determined before the treatment in PTVE group. At 1 month and 3 months after TIPS, the liver functions were declined obviously. At 6 and 12 months after the treatment, the liver functions were not significantly different from those determined before the treatment in PTVE group. Conclusion The surgery of TIPS is safe and ideal interventional treatment for cirrhosis with esophageal gastric varices bleeding, which has the lower rebleeding rate, better esophageal gastric varices alleviation rate and long term less influence in liver function.

Aim Based on the effect of total flavonoids extracted from Polygonum perfoliatum L.(TFP) against dimethylnitrosamine(DMN)-induced hepatic fibrosis(HF), to investigate the anti-fibrotic mechanism of TFP.Methods Ninety SD rats were divided into normal group, model group, colchicines(0.1 mg·kg-1) group, and TFP(200, 100, 50 mg·kg-1) group.Except the rats of normal group, other rats were injected intraperitoneally with volume fraction 0.5% DMN solution(2 mL·kg-1) for eight weeks, once every two days.From the first day of modeling, each administration group was given the corresponding dose of drugs to intervene, and the normal group and model group were given an equal volume of solvent, once a day.At the end of the eighth week, the blood and liver tissues were collected.Liver tissue was taken at a fixed position, and the degree of liver tissue was observed by HE staining.The contents of serum ALT, AST, SOD and MDA were measured using colorimetric method;the levels of serum HA, LN, PCⅢand Ⅳ-C were detected using enzyme-linked immunosorbent assay(ELISA);the levels of TNF-α, IL-1β and IL-6 in liver tissues were detected by ELISA;the expression of α-SMA, TGF-β1, p-JAK2 and p-STAT3 were detected by Western blot.Results Compared with the model group, TFP(200, 100, 50 mg·kg-1) could improve the liver tissue lesions, reduce the expression of ALT, AST, HA, LN, PCⅢ, IV-C and MDA, increase SOD activity, reduce the levels of TNF-α, IL-1β and IL-6, and inhibit the expression of α-SMA, TGF-β1, JAK2, STAT3, p-JAK2 and p-STAT3.Conclusion TFP could inhibit DMN-induced HF of rats, which may be involved with antioxidant and inhibiting expression of TGF-β1, JAK2/STAT3 signaling pathway and inflammatory response.

Objective To determine quercetin content in Polygonum chinense L.from different growing areas.Methods RP-HPLC was used to determine quercetin content.Chromatographic conditions were as follows:chromatographic column of Agilent TC-C18 (4.6 mm?250 mm,5 ?m),mobile phase consisting of methanol-0.6 %phosphoric acid (52:48),with a velocity of 1 mL?min-1,column temperature at (25?1)℃,detection wavelength being 365 nm,elution time of 20min,and an injection volume of 20 ?L.Results Standard curve regression equation of quercetin is:Y=85 355X-48.16(r=0.999 3).A good linearity was showed in the range of 0.004～0.012 mg?mL-1,with average recovery being 100.3 %,and RSD of 1.44 %.The content of quercetin in the samples from different growing areas is in the range of 183.0～848.1 ?g?g-1.Conclusions The method is simple and reliable,and can be used to control the quality of Polygonum chinense L.The existence of some differences of quercetin content between medicinal materials from different growing areas indicates that we should make a quality standard to ensure the safety and effectiveness of Polygonum chinense L.in clinic.