Kupffer cells, the resident macrophages of the liver, play an important role in ischemia/reperfusion(L/R)injury in liver transplantation. 1schemic liver is reperfused through portal vein, and then Kupffer cells are activated. The liver is damaged by the released reactive oxygen species, inflammatory mediators and cytokines. On the other hand, upregulation of HO-1, induced by the activated kupffer cells, exerts a cytoprotective function for the IYR injury in liver transplantation models. Thus, Kupffer cells play the dual role on L/R injury in liver transplantation.

Breast neoplasm shows high rate of incidence and mortality among females.Although thereare a variety of treatments for breast neoplasm,breast neoplasm metastasis is still an intractable medical problem.At present,the related mechanisms of breast neoplasm metastasis are as follows:epithelial-mesenchymal transition,dissolution of extracellular matrix,circulating tumor cells or disseminated tumor cells,tumor vessels and tumor microenvironment.Making clear of the related mechanisms of breast neoplasm metastasis has certain guiding significance for the prediction and treatmence of breast neoplasm metastasis.

Radiotherapy is a vital treatment method for pancreatic cancer. However, the therapeutic effect of radiotherapy is significantly limited by the influence of pancreatic motion. More efficient radiotherapy for pancreatic cancer depends upon the improvement of motion management and high-quality image guidance. The emerging MR-guided radiotherapy (MRgRT) can perform functional imaging with high soft tissue resolution and no additional radiation. Multiple researches have demonstrated that MRgRT has significant advantages in terms of precise delineation of target area and organ at risk, motion management and adaptive radiotherapy, which assists radiotherapy to play a better role in the treatment of pancreatic cancer. In this paper, the application of MRgRT in pancreatic cancer was reviewed and prospected.

Mesenchymal stem cells(MSCs) have became the hot spot in cell tissue engineering,cell replacement therapy,gene therapy and transplant research fields. Recent studies have shown that changes in oxygen concentrations affect many biological characteristics of MSCs. Under different oxygen concentrations,MSCs have different proliferation,differentiation,migration and chemotoxis abilities. Hypoxia is a kind of common pathophysiological status,which can promote the proliferation,apoptosis,migration and chemotoxis abilities of MSCs,while hypoxia impacts the differentiation ability depending on different cell types. The mechanism of these response might be involved in hypoxia-inducible factor-1(HIF-1) ,chemokines and their receptors,and matrix metalproteinases. Hypoxia can activate HIF-1 signaling pathway,which upgrades the expression of stromal-derived factor-1(SDF-1) ,and forms microenvironments which stem cells are adapted to and grow in. SDF-1 increases the adhesion,migration and homing of circulating CXCR4-positive progenitor cells to ischemic tissue,and promotes degradation of extracellular matrix,then enhances the migration ability of MSCs by modulating the expression of matrix metalloproteinase and its protein as well.

Objective To discuss MMP_(10) and CD_(44V6) in the thyroid carcinoma hit of give voice to and the thyroid carcinoma warlock if recur of connection.Methods The expressions of MMP_(10) and CD_(44V6) in the 69 cases thyroid carcinoma tissue were examined by appling immunochemist of technique.Results Among 69 cases thyroid carcinoma,the positive markers of expressions of MMP_(10) and CD_(44V6) were related to the thyroid carcinoma classification and the lymph gland transfering(P

Objective To discuss pefioperative nursing observation in patients with hyperthy-roidism. Methods 35 patients with hyperthyroidism were given preoperative psychological guidance, pre-operative preparation, careful postoperative observation, prevention of complications,diet and rehabilitation di-rections. Results 35 patients were discharged smoothly 7 to 8 days postoperation. Conclusions Perfect preoperative preparation and close observation and care is the guarantee of successful operation for patients with hyperthyroidism.

Objective To study the effect of early intensive insulin therapy on the prognosis of critical old patients.MetlIods 76 critical old patients(＞65 years)were randomly divided into intensive insulin therapy group and control group,which were given intensive and routine insulin respectively,and biological parameters of organ func-fion and main prognostic indexes were recorded.Results The safety of intensive insulin therapy Was better.After bloed sugar was controlled strictly by intensive therapy,the incidences of aucte renal,heart and liver failure reduced obviously.There were obvious differences in mortality and the incidence of nosoeomial infection.Conclusion For critical old patients,early intensive insulin therapy can control blood glucose more effectively and promptly and im-prove the clinical curative effect.

lschemic postconditioning(IPo)is a way that after long ischemia on liver graft,animals are given one or several brief reperfusion-ischemia before persistent reperfusion to improve the hepatic tolerance and relieve the ischemie reperfusion injury.It has been proved an effective and controlled method to attenuate the ischemic reperfusion injury.Protective mechanism of ischemic postconditioning on hepatic graft is related with protecting sinus hepaticus endotheliocyte and hepatic microcirculation,relieving hepatic cells injury and inflammatory reaction induced by oxygen free radicals,relieving calcium ovedoad in hepatic cells and mitochondria,regulating apoptosis genes,transforming ion channels condition in mitochondria.This article will makes a brief review on protective mechanism ofhepatic ischemic posteanditioning.

Objective To summarize the clinical experience of living relative donor kidney transplantation.Methods A retrospective analysis on 19 cases of living relative donor kidney transplantation from February 2002 to May 2006 was carried out.Results No blood transfusion was needed and no serious postoperative complications occurred in donors.The 19 donors were discharged from hospital at 7～10 days postoperatively.Follow-up examinations for 1～51 months(mean,28 months)in the 19 donors revealed normal liver and renal functions.Among the 19 recipients,follow-up examinations for 1～51 months(mean,28 months)showed that the renal functions recovered in 3～5 postoperative days in 16 recipients and within 3 weeks after transplantation in 3.Acute rejection occurred in 2 recipients postoperatively,and was reversed by steroid pulse therapy in 1 recipient and by ALG treatment for 10 days in 1 recipient,in whom the hormone pulse therapy was invalid.The hormone treatment was needed for only 3 weeks in a renal transplantation between monozygotic twins,without using other immunosuppressors,and no acute rejection occurred.Two patients with an uneventful recovery developed an acute rejection because of voluntary decrement and even stopping of immunosuppressor after 6 months,and then was treated with hormone pulse treatment until a reversion.The 1-year survival rate for patient/kidney was 100%.Conclusions Living relative donor renal transplantation is safe and feasible,offering a high survival rate for patient/kidney.

Objective To investigate the effects of dexamethasone on the growth of cervical cancer induced by HeLa cells transplanted into BALB/c mice. Methods HeLa cells were inoculated subcutaneously into BALB/c mice. Dexamethasone (15 mg?kg-1?d-1) was injected intraperitoneally from the 6th or the 16th day after tumor inoculation for 10 days continuously. Diameter of tumors was measured every two or three days. Apoptotic bodies were observed by transmission electron microscopy and counted by TUNEL. Results Dexamethasone repressed the growth of cervical cancer and induced tumor cell apoptosis, but the tumor volumes were of statistical difference between the two groups of different injection start time (P