This is a review of recent progress in the study on environment sensitive hydrogel based on cyclodextrin and their most recent and relevant applications in the intelligent drug delivery systems. Based on relevant literatures, the development of environment sensitive hydrogel responsive to physical, chemical and biochemical stimuli was introduced, involving their categorization, design principles, mechanism of action and potential application. Various new types of intelligent drug delivery system, which responds to various triggers, could be constructed by using the cyclodextrin-based environment sensitive hydrogel. They made it possible to control the drug release freely. Although these hydrogels are still at their research stage, they have attracted considerable interest in the intelligent drug delivery system.

Acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) is characterized by non-cardiogenic,acute,progressive and hypoxic respiratory insufficiency or respiratory failure mediated by various internal and external stimuli.The pathogeny of lung injury is varied,pathogenesis is complicated,and it is not clear.Related pathogeny and pathogensis of lung injury is reviewed as follows.

Adenoviridae ; genetics ; Genes, p53 ; Genetic Therapy ; methods ; Genetic Vectors ; Humans ; Neoplasms ; therapy ; RNA Interference ; Tumor Suppressor Protein p53 ; genetics

Anticancer drugs resistance is often ascribed to gene mutation,amplification or epigenetic changes that affect the uptake,metabolism or export of drugs at the cell level.Tumor physical microenvironment not only influences the drug distribution but also causes difference in cell proliferation rate and hypoxia or acidosis due to its heterogeneity,which could affect the tumor drug resistance.This review discusses the relationship between cancer physical microenvironment and drug resistance and the strategies for enhancement of the chemotherapy sensitivity through modification of the tumor physical microenvironments,as well as foreground of the research.

OBJECTIVE:To observe the safety and immunological effects of Measles-mumps-rubella(MMR)attenuated live at-tenuated vaccine in children. METHODS:300 children aged 8-12 months receiving inoculation were selected from Changsha Hospi-tal for Maternal and Child Health Care during Jan. 2015-Apr. 2016 to observe safety and immunological effects. Those children were divided into MMR group,measles vaccine group,mumps vaccine group and rubella vaccine group according to vaccine type, with 75 cases in each group. The occurrence of ADR in 72 h were compared among 4 groups after inoculation;venous blood of chil-dren was collected before vaccination and 5 months after vaccination,and the antibody positive test was carried out by micro coagu-lation inhibition (HI) test;HI antibody titer was recorded after immunization,and positive rate and genometric meantiter(GMT) were calculated. RESULTS:The incidence of ADR in 4 groups were 9.33%,8.00%,8.00% and 10.67%,respectively. No local ADR was found in 4 groups;among systemic ADR,the incidence of fever was higher than that of other clinical manifestations,be-ing 4.00%,4.00%,4.00% and 5.33%;there was no statistical significance in the incidence of ADR among 4 groups(P>0.05). Measles,mumps and rubella antibody positive rates of MMR group were 100%,92.00% and 100%,respectively;antibody posi-tive rates of measles vaccine group,mumps vaccine group and rubella vaccine group were 100%,85.33% and 100%,respective-ly;there was no statistical significance in same antibody positive rate among 4 groups(P>0.05). GMT of measles in MMR group and measles vaccine group were 1∶41 and 1∶27,that of mumps in MMR group and mumps vaccine group were 1∶6.3 and 1∶6.2, there was no statistical significance (P>0.05);GMT of rubella in MMR group and rubella vaccine group were 1∶320 and 1∶849, with statistical significance (P<0.05). CONCLUSIONS:Compared to traditional single vaccine,MMR dose not increase the inci-dence of ADR and not influence positive rate,but GMT of rubella increases significantly,to which should be paid attention.

OBJECTIVE: To elucidate the important role of calcium and calreticulin in cardiomyocyte.DATA SOURCES: We searched PubMed database for articles about the role of calcium and calreticulin in the cardiomyocyte published in English from January 1994 to December 2005 with the key words of "Ca2+, calreticulin, cardiomyocytes/ cardiac myocyte, differentiation".STUDY SELECTION: The retrieved data were selected primarily and articles about the important role of calcium and calreticulin in the cardiomyocyte were selected. Meanwhile, articles of repetitive research were excluded.DATA EXTRACTION: Totally 200 articles were researched, 42 were included, and 158 were excluded.DATA SYNTHESIS: Investigation on the molecular structure of the intracellular Ce2+ release channels (RyR and IP3R) on the endoplasmic reticulum and sarcoplasmic reticulum and structure of crt gene manifests that these channels co-participate in the regulation of calcium homeostasis with calreticulin, which plays a key role in cardiac development and differentiation.CONCLUSION: Intracellular free Ca2+ is a critical second messenger in heart. Alterations in intracellular Ca2+ homeostasis have profound effects on cardiac functions such as contraction-relaxation and cardiac development. Intracellular Ca2+ homeostasis is maintained primarily via the endoplasmic reticulum, within which, Ca2+ is mainly bound to calreticulin.Knockout of crt gene is embryonically lethal due to impaired cardiac development.

Objective To investigate the clinical effect by early mechanical ventilation and perfluorocarbons gasification inhala-tion on patients with severe acute pancreatitis (SAP) complicated with acute respiratory distress syndrome (ARDS) .Methods 34 cases of SAP and ARDS patients accepted early mechanical ventilation and vaporization of perfluorocarbon inhalation therapy (ob-servation group) ,and 34 patients received mechanical ventilation for early treatment alone (control group) ,The efficacy ,oxygenation index(PaO2/FiO2 ) and inflammatory cytokines IL-1 ,6 ,8 ,and TNF-a level of two groups were compared .Results The total effi-ciency of the observation group was 94 .12% ,which was significantly higher than the control group that was 76 .47% (P<0 .05) . After treatment ,the arterial oxygen saturation (SaO2 ) ,arterial oxygen pressure (PaO2 ) ,PaO2/FiO2 of the observation group in-creased significantly ,and higher than the control group(P<0 .05) .After treatment ,IL-1 ,6 ,8 ,TNF-αof the observation group were significantly lower than the control group(P<0 .05) .Conclusion The treatment of early mechanical ventilation with perfluorocar-bon inhalation gasification could control the inflammation in patients with SAP complicated with AROS ,which could improve the cure rate .

Objective: To help medical device registration applicant understand the content of clinical evaluation, guided on the clinical evaluation method, and also putted forward several suggestions of the improvement scheme for our country registered clinical assessment and review of the work. Methods:Described the Global Harmonization Task Force (GHTF) medical device registration guidance for clinical evaluation, combined with the status quo of supervision in China, and made some specific scheme on China's medical device of clinical evaluation work. Results: Introduced the contents of the clinical evaluation and the relationships between the factors, in order to help the medical device registration applicant and Chinese regulators to do clinical evaluation work of scientific and reasonable. Conclusion:The definition of medical device registration clinical evaluation should clear the clinical evaluation, and to develop guidance for clinical evaluation of the corresponding.

Heme oxygenase-1(HO-1) is an inducible stress protein.In addition to its role in heme degradation,several positive biological effects exerted by this enzyme have highlighted in recent years as anti-inflammatory,anti-apoptotic,anti-proliferative and cytoprotective functions.This oxidase system with multiple functions takes part in the pathophysiology of cardiovascular system.It is related to a variety of cardiovascular diseases including hypertension,atherosclerosis,ischemia/reperfusion injury and postangioplasty restenosis.

0. 05). Conclusion: Venlafaxine XR is effective and safe in the treatment of elderly depression.