OBJECTIVE: To summarize the cause and mechanic of inflammation reaction induced by medical biomaterials in the body.DATA SOURCE: A computer-based online search of Pubmed database was undertaken to identify the relevant articles published from January 2004 to December 2008 in English with the key words of "biomaterials, inflammation, mechanism".Meanwhile, with Chinese articles were retrieved from CNKI database between January 2005 and December 2008 with the key words of "biomaterials, inflammation, mechanism".DATA SELECTION: Articles concerning the cause and mechanic of inflammation reaction induced by medical biomaterials were included. Articles addressing physical and chemical features and mechanics of medical biomaterials were excluded.MAIN OUTCOME MEASREUS:①After the material implants in vivo, inflammatory cell and material adhering.②Cell factor expression.RESULTS: After initially examined 70 literatures were obtained. According to inclusion and exclusion criteria, the reasons and the mechanism related to the medical biological material in host in vivo for causing the inflammation were analyzed. Along with the tissue engineering development, various new high-polymer medicine biological materials with good biological compatibility,the biological activity and the biodegradation absorption function are emerging unceasingly. The biomedicine material was used to repair or substitute damage organization and the organ, and to cause function recovery. The infection was still the serious complication following the medical biological material was implanted. The mechanism of biomedicine material-induced infection is: complement in blood adhere the biological material surface, which causes collection and adherence of integrin-mediated leukocytes, release of cytokines and growth factors from adherent monocytes/macrophages, resulting in the occurrence of biomedicine material-related infection. To prevent the medical biological material-related inflammation, we should first embark from the material itself, and seek for some to respond the small medical material to the host inflammation.CONCLUSION: The success of material implantation depends on the medical biological material relevant inflammation. The production of biomaterial-related inflammation is action results of inflammatory cell, inflammation factor, complement as well as enzyme, oxygen free radical. Material surface microstructure, chemistry and dielectric and so on immediately influence inflammatory cells on material response.

Methylenetetrahydrofolate reductase(MTHFR),a key enzyme in methionine-folic acid metabolism,participates in the synthesis of thymidine monophosphate(TMP) and purine as an indirect donator of methylium.It plays an important role in maintaining the normal level of homocysteine and DNA repair and replication.The MTHFR gene mutation decreases the activity of enzymes,increases the homocysteine level of blood plasma,and induces abnormal DNA methylation and various diseases.This review focuses on the structure and function of the MTHFR gene,its polymorphism and the relationship between its polymorphism and congenital heart disease.

OBJECTIVE:To evaluate the economical efficiency of alogliptin for type 2 diabetes and provide clinical evi-dence for related researches. METHODS:Retrieved from Cochrane Library,Pubmed,EMBase,CNKI,VIP,Wanfang,CBM database up from the start of the database to Mar.,2014,RCTs about alogliptin combined with traditional antidiabetic agents regimen vs. traditional antidiabetic agents regimen in the treatment of type 2 diabetes mellitus were included. Based on the sec-ondary analysis method of literatures,Effectiveness indexes and treatment course were extracted from the literatures,from the perspective of patients,and daily treatment cost was used to calculate the cost;cost-effectiveness analysis was adopted to evalu-ate the economical efficiency of alogliptin combined with traditional antidiabetic agents regimen vs. traditional antidiabetic agents regimen. RESULTS and CONCLUSIONS:6 literatures which met inclusion criteria were included. When alogliptin com-bined with metformin treatment lasted for 12 weeks,the decrease value of HbA1c as effect index showed poor cost-effective-ness;when treatment course increased to 26 weeks,the rate of qualified HbA1c as effect index showed poor cost-effectiveness. When the price of alogliptin decreased by 10% or the effects of trial group was the upper limit of 95%CI,the cost-effective-ness was superior to metformin regimen group. 12 weeks of alogliptin combined with pioglitazone treatment showed better cost-effectiveness than pioglitazone alone using the decrease value of HbA1c as effect;when treatment course increased to 26 weeks,the treatment showed poor cost-effectiveness;when treatment conrse increased to 26 weeks,using the rate of qualified HbA1c as effect indes,the results of sensitirity analysis showed that cost-effectiveness of trial group was better than that of pio-glitazone alone group as the apper limit of 95% CI. When alogliptin combined voglibose treatment lasted for 12 weeks,the de-crease value of HbA1c as effect index showed superior cost-effectiveness to voglibose regimen group. It is suggested to develop alogliptin pharmacoeconomics research based on RCTs and pharmacoeconomics research about improving diabetes patients’ long-term living quality.

Objective To investigate doctor-patient communication skills status and the influencing factors so as to pu forward to develop the proposal.Methods We selected undergraduate students in fourth grade which participated in the 2012 Shanghai Jiaotong University School of Medicine OSCE examinations before practice of clinical medicine by cluster sampling 1 and we selected four western and chinese medicine hospitals randomly sample 2,which are three level of first-class hospitals in Shanghai.We design the questionnaire and observe sampling with the SEGUE framework.Application of SPSS 13.0 data for statistical analysis,descriptive statistics analysis,u test,t test,ANOVA,rank sum test and correlation analysis method.Results The test with SEGUE framework shows that the scores of samplingl were 12.54 points(out of 24),the score rate is low which was 52.25％,and in the score rate of the dimensions,the end of inquiry dimension is 4％ which is the lowest.There are significant statistical differences between different groups of influencing factors such as Medical occupation interest score and so on.There is no statistically significant difference between the SEGUE score of traditional Chinese medicine and western medicine clinical Intern.The communication skills of western medical students are higher.Doctor-patient communication skills related factors such as recognition of the importance of doctor-patient communication skills and other groups are statistically significant,the correlation coefficients are very small which is between 0.1 and 0.3.Conclusion The overall level of doctor-patient communication skills on clinical internship are not high,through the guidance and training on the occupation interest of medical students,we can strengthen the recognition of the importance of doctor-patient communication skills,so that we will improve the doctor-patient communication skills for the medical students.SEGUE framework should be used to routine medical students communication skills evaluation.

The pathogenic and therapeutic effect of gut microbiome is a hot topic in recent years .Many researchers gradually focused on the relationship between the eating disorder and the gut microbiome .The gradual in-depth studies show that gut microbiome can intervene in the host′s metabolic state by multiple approaches to regulate appetite and bring new inspiration for the treatment of dis -eases.In this article, we review all important findings in this field and discuss the mechanism how gut microbiome effects appetite regu -lation.

Autophagy is an important homeostatic cellular recycling mechanism responsible for degrading injured or dysfunctional cellular organelles and proteins in all living cells. Aging is a universal phenomenon characterized by progressive deterioration of cells and organs due to accumulation of macromolecular and organelle damage. Growing evidences indicate that the rate of autophagosome formation and maturation and the efficiency of autophagosome/lysosome fusion decline with age. Dysfunctional autophagy has also been observed in age-related diseases. Autophagy disruption resulted accumulation of mutated or misfolded proteins is the essential feature of neurodegenerative disorders. However, in cancers, fibroproliferative diseases or cardiovascular diseases, autophagy can play either a protective or destructive role in different types of disease, and even in different stages of the same disease. The review will discuss the cellular and molecular mechanisms of autophagy and its important role in the pathogenesis of aging and age-related diseases, and the ongoing drug discovery strategies for therapeutic intervention.
Aging ; Autophagy ; Drug Discovery ; Humans ; Lysosomes ; metabolism ; Neurodegenerative Diseases ; Phagosomes ; metabolism ; Protein Folding

Objective To investigate the expression of human leukocyte antigen F (HLA-F) in hepatocellular carcinoma (HCC) tissues and to evaluate its relation to clinicopathological features and prognosis of HCC.Methods HLA-F expression of tumor lesions and their adjacent normal liver tissues from 115 HCC patients were analyzed by immunohistochemistry,and its relationship between HLA-F expression and the clinicopathological features and prognosis of HCC patients was also analyzed.Results HLA-F expression was positive in 47.0％ (54/115) of the HCC lesions and in 10.6％ (7/66) of the normal liver tissues (x2 =24.799,P ＜ 0.05).HLA-F expression in HCC lesions was significantly correlated with portal vein invasions (x2 =7.644,P =0.006),tumor number (x2 =4.210,P =0.040) and patient sex (x2 =6.759,P =0.009).The mean survival time of the HLA-F positive HCC patients was 34.0 months(95％ CI:27.5-40.5 months),which was significantly shorter than that of HLA-F negative HCC patients(44.6 months,95％ CI:38.3-50.9months) (x2 =5.148,P =0.023).HLA-F expression was an independent predictor of overall survival of HCC patients.Conclusions Positive HLA-F expression is negatively correlated with the prognosis of HCC patients.

Objective The micro-vascular element plays a key role in the delivery of nutrients and the regulation of hemodynamic behavior, however, research is often hindered by ethical , economic and technological issues .Therefore, construction of a micro-vascular network in vitro will help to study the related pathological and physiological behavior in microvessels.Methods In this study, a micro-vascular element model with features of a micro-vascular network in vivo was designed based on the network structure of retinal arterioles .A micro-vascular network model in vitro, characterized by network asymmetry and the presence of both bifurcation-and side-branches , was developed by soft lithography technology . The developed microdevice allowed for the quantification of the cell -depletion layer ( CDL) thickness and hematocrit ( Ht) distribution within the microchannel networks .Results and Conclusion The study showed the potential of the developed in vitro model in revealing key hemodynamic features which have been detected for microvascular elements in vivo, including the relationships between CDL thickness , Ht and red blood cell distribution .The present study provides a new strategy and a technology for studying hemodynamics and microvascular system diseases in vitro.

Autophagy is an important homeostatic cellular recycling mechanism responsible for degrading injured or dysfunctional cellular organelles and proteins in all living cells. Aging is a universal phenomenon characterized by progressive deterioration of cells and organs due to accumulation of macromolecular and organelle damage. Growing evidences indicate that the rate of autophagosome formation and maturation and the efficiency of autophagosome/lysosome fusion decline with age. Dysfunctional autophagy has also been observed in age-related diseases. Autophagy disruption resulted accumulation of mutated or misfolded proteins is the essential feature of neurodegenerative disorders. However, in cancers, fibroproliferative diseases or cardiovascular diseases, autophagy can play either a protective or destructive role in different types of disease, and even in different stages of the same disease. The review will discuss the cellular and molecular mechanisms of autophagy and its important role in the pathogenesis of aging and age-related diseases, and the ongoing drug discovery strategies for therapeutic intervention.