Liver transplantation is currently the only treatment option for end-stage liver disease,but it is limited by the lack of high quality donor livers.The ongoing liver donor shortage could be alleviated by the consequent expansion of do-nor criteria to include the use of livers that would once have been discarded as unsuitable,marginal livers.Static cold storage,the current gold standard of organ preservation,is incapable of reversing the ischemic damage these organs have sustained.In hepatic transplantation,the limitations of cold storage are reflected in the significantly higher rates of early al]ograft dysfunction,primary non-function,and local ischemic cholangiopathy,especially seen with older,steatotic and donation after cardiac death (DCD) grafts.The existing cold storage technology has restricted the use of this kind of organs and machine perfusion preservation technology becomes an alternative choice.In this paper,we review the research progress on machine perfusion preservation of livers,and introduce the normothermic machine perfusion.

Implantable Neurostimulators ; Micro-Electrical-Mechanical Systems ; Microelectrodes

Epithelial-mesenchymal transition (EMT) is a differentiation process of epithelial cells into mesenchymals,which is widespread in the invasion and metastasis of malignant tumor.Studies show that EMT is influenced by a variety of factors such as cytokines,signaling pathways and transcription factors.Studies also show that intracellular and extracellular signal transmission could induce EMT.Signal transduction is a process which involves ligand-receptor binding in the extracellular,going into the cell and activating different nuclear transduction factor through intracellular signal transduction pathway.

Objective To study the association of pulse pressure index(PPI)with insulin-like growth factor 1(IGF-1)and transforming growth factor beta 1(TGF-?1)in aged cases with essential hypertension(EH).Methods To detect serum IGF-1,TGF-?1 and to calculate left ventricular mass index(LVMI)in 160 aged patients with EH.To calculate PPI.Tow groups were divided according to the PPI:normal PPI group and high PPI group.Results The levels of IGF-1 in high PPI group were higher than that in normal PPI group(P

Objective To analyze main influencing factors of hospitalization expenses by support vector machine modeling,and explore effective influence factors analysis methods of medical expenses. Methods Random selection of six hospitals in Zhejiang province.Using hospital electronic medical record system of the hospitals and selecting three kinds of typical diseases of internal medicine and surgery,to build the support vector machine model,BP neural network model,and multiple linear regression model for comparison of analysis results.The SVM model is used to analyze three various diseases.Results The support vector machine model based on radial basis kernel function scored the highest prediction accuracy on the hospitalization expenses,up to 96.07%.In a mixed analysis of different diseases,analysis results of all three models pointed the main influence factors of hospitalization expense as days of stay,disease types,and hospital coding for the surgery.In the analysis by diseases individually,the influencing factors, though varying with diseases, key factors remain the same. Conclusion The support vector machine in the influence factor analysis is feasible in hospitalization expenses.According to the analysis results,the single disease payment system can be made rationally, which can effectively control excessive growth of medical expenses.

Objective To explore the best mode of diabetic dietary education in the nursing specialist outpatient service,which is suit for China's national situation.Methods A total of 100 diabetic patients consulting diabetes diet in the nursing specialist outpatient service were divided into observation group and control group with 50 cases each by random digits table method.The routine sermonic education mode was used in control group,while the error-correction education mode was used in observation group.The question-real-time evaluation was performed at the end of the education and a follow-up evaluation after 6 months of intervention was evaluated.Results Grasp of the knowledge of diabetes diet in observation group immediately after education and 6 months after education were better than those in control group,t=3.07,3.06,P＜0.01.In the follow-up evaluation after 6 months of intervention,fasting blood glucose and glycosylated hemoglobin were (6.84±0.79) mmol/L,(6.83±0.36) ％ in observation group and (7.56±0.93) mmol/L,(7.67±0.87) ％ in control group.The indices in observation group were significantly better than those in control group,t=-4.17,-6.32,P＜0.01.Conclusions Using the error-correction education mode can correct the false dietary behavior of patients and improve the effect of the diabetic dietary education more effectively.

Objective To investigate the characteristics of spontaneous discharges of hippocampal pyramidal cells (PC) in rats in age and memory groups with the help of nonlinear theory. Methods Rats were randomly divided into age group and memory group. Age group included aged group (16-19 months) and young group (3-4 months) whereas memory group included good memory and poor memory groups in adult. Extracellular single cell recording was performed in vivo . Results No characteristics of the rhythm of spontaneous discharges of hippocampal pyramidal cells in distribution figure of interspike interval(ISI) were found, but the loss of complexity(C) and low percentage of favored patterns(PF) were found in age and poor memory groups. Conclusion The ISI complexity and the PF of the hippocampal pyramidal cells are correlated to age and memory, suggesting that the analysis of the complexity and favored patterns may be helpful for the discovery of the characteristics of the information coding in spontaneous discharges of hippocampal pyramidal cells.

Radiotherapy not only acts as an important local treatment of cancer, but also plays a key role in regulation of immune function. Radiotherapy regulates anti?tumor immune responses by promoting the generation of neoantigens, regulating the release of cytokine, and enhancing the sensitivity of tumor to cell?mediated immunity. Recently, several studies and clinical practice reported the abscopal effect in some patients undergoing radiotherapy combined with immunotherapy, which showed partial or complete response of metastases outside the irradiation field, suggesting the combination therapy as a promising strategy. However, further studies are needed for the understanding of the mechanism and influencing factors for immunity such as radiation dose and fractionation scheme. This paper reviews the research advances in the mechanism of radiotherapy?immunotherapy interaction and the combination therapy for cancer.

Objective · To investigate the role of interleukin-10 (IL-10) in regulating ocular neovascularization (NV). Methods · Expression of IL-10 was investigated in mice with oxygen-induced retinopathy (OIR) and transgenic mice with VEGF expression in photoreceptors by immunofluorescence,RT-PCR, and Western blotting. Mice deficient in IL-10 were used to test the effect of IL-10 in retinal, sub-retinal, and choroidal NV. Results · In OIR mice and transgenic mice with VEGF expression in photoreceptors, the staining intensity and mRNA expression of IL-10 were increased. Mice deficient in IL-10 showed a significant reduction in ischemia-induced retinal NV, and choroidal NV at rupture sites in Bruch's membrane. Mice lacking IL-10 showed reduced levels of hypoxia-inducible factor-1α (HIF-1α) and suppression of ischemia-induced expression of VEGF and VEGF receptor 1. Macrophage was regulated and reduced in ischemic retina of mice with IL-10 deficiency. Conclusion · IL-10 stimulates ocular NV through modulation of HIF-1α and its target genes VEGF and VEGF receptor 1. IL-10 promotes ocular NV via macrophage response to retina ischemia.

Background and purpose:Breast cancer has the highest morbidity and mortality rate in women worldwide. Triple-negative breast cancer (TNBC) has no speciifc target and has low survival rate. Recent studies have veriifed BRD4 could promote tumor progression. This study aimed to detect the expression level of BRD4 in TNBC after treatment with gemcitabine, and to reveal the effect ofBRD4 silencing plus gemcitabine as a treatment for TNBC. Methods:The expression ofBRD4 in TNBC cell lines treated with gemcitabine was detected by reverse transcription PCR (RT-PCR) and Western blot. The effect of BRD4 silencing plus gemcitabine in TNBC was illustratedin vitro and in vivo.Results:The expression ofBRD4 in TNBC was signiifcantly increased after treatment with gemcitabine.In vitro,BRD4 knockdown signiifcantly lowered the IC50 value. The apoptotic rate of TNBC was signiifcantly increased in theBRD4 silencing plus gemcitabine group compared to the other. The growth rate of tumorin vivo was signiifcantly lowered in the BRD4 silencing plus gemcitabine group.Conclusion:BRD4 may play an important role in the drug resistance to gemcitabine in TNBC.BRD4 silencing plus gemcitabine may be a novel treatment strategy for TNBC.