World Health Organization aims to develop safe, effective and practical traditional medicine. Traditional Chinese medicine (TCM) and other complementary and alternative medicine are being recognized in the whole world nowadays. However, the definite effect of Chinese medicine is still in need of scientific research proof. Placebo control is of equal importance to active control and blank control in clinical trial of TCM. This article briefly reviewed the importance of placebo control and commented on its present situation in clinical trial of TCM. This article also brought up the preliminary proposals of placebo application in TCM clinical trial. We should emphasize scientific placebo preparation and good design of placebo-controlled trial, which are directed by International Conference on Harmonization of Technical Requirements for Registration of Pharmaceuticals for Human Use. A good clinical trial project will avoid unnecessary wastes and provide safe and effective treatment for people.

To investigate the application of the teaching model of disease-based PBL combined with the interest group in clinical ophthalmology teaching. A clinical ophthalmology interest group was set up among interns and a PBL teaching with the theme of a single disease was carried out. The students demonstrated group presentation and discussion, and finally the teacher made comments in combination with clinical experience. The results shows that students' feedback was good. It has mobilized students' enthusiasm and initiative and can be used as a transition for carrying out PBL teaching complement to the traditional teaching model and be applied to the clinical ophthalmology teaching.

This article discusses the variation process of the sense of justice in western and traditional Chinese society,and its effect on regulatory ethics.Western regulatory ethics takes "making use of evil to restrain evil" as its regulatory principle,whose purpose is "to increase goodness by evil",while Chinese regulatory ethics employs "taking goodness in restraining evil" as its regulatory principle.The Chinese regulatory ethics puts morality in the first place,using morality to replace regulatory systems.The distinctions of cultures and the sense of justice between western and Chinese societies cause the different viewpoints in relevant systems and regulations.

Objective To observe the effect of Da Jianzhong Decoction on cerebral cyclooxygenase-2 (COX-2) mRNA and protein and calmodulin-dependent protein kinase II(CaMKⅡ) mRNA in spleen-yang deficiency pain rats, so as to investigate the therapeutic mechanism of Da Jianzhong Decoction for spleen-yang deficiency pain. Methods Forty SD rats were randomly divided into normal group, model group, and high-and low-dose Da Jianzhong Decoction groups(3, 0.75 g·kg-1·d-1), 10 in each group. Spleen deficiency rat model was established by comprehensive modeling methods. After the rats in various groups were given gastric administration of Chinese medicine for 15 continuous days, rat cervical dislocation was performed for the sampling of the brain tissue. The expression levels of COX-2 mRNA and CaMKⅡmRNA in brain tissue were detected by real time polymerase chain reaction (RT-PCR). The COX-2 protein expression was determined by immunohistochemistry. Results Compared with the normal group, mRNA and protein expression levels of COX-2 in rat brain tissue of spleen-yang deficiency model group were increased(P﹤0.01), and CaMKⅡ mRNA expression was decreased (P<0.01). Compared with the model group, COX-2 mRNA and protein expression levels were decreased(P<0.01) and CaMKⅡexpression was increased(P<0.01) in high-and low-dose Da Jianzhong Decoction groups(P<0.01). Conclusion Da Jianzhong Decoction can suppress cerebral COX-2 mRNA and protein expression, and up-regulate CaMKⅡmRNA expression, which probably contribute to its therapeutic mechanism for relieving the pain.

Objective To investigate the changes of inflammatory factors in mice infected with Vibrio alginolyticus .Methods Established a V .alginolyticus ATCC17749 T‐infected mouse model through intraperitoneal injection ,then performed the median le‐thal dose experiment ,the detection of hematological and liver function indicators ,histopathologic evaluation and inflammatory cyto‐kine detection .Results The median lethal dose of V .alginolyticus ATCC17749T was 1 × 109 CFU by intraperitoneal injection .The dose of 1 × 109 CFU per mouse was adopted in the following study .WBC and platelet numbers significantly decreased after infection (P<0 .05) ,RBC number and hemoglobin content significantly increased(P<0 .05) and ALT ,AST significantly increased after V . alginolyticus infection(P<0 .05);light microscopy observation revealed that ,hepatic cell and pulmonary tissue suffered serious inju‐ry after infection.Through the detection of antibody array ,the levels of 20 inflammatory factors were found changed significantly . 8 of them including KC ,IL‐6 ,RNATES ,IL‐12 ,Eotaxin ,G‐CSF ,MIP‐1a ,Mig ,the expression of which increased more than 10 times .Conclusion The inflammatory factors analysed in the paper provide a theoretical basis for the study of the inflammatory mechanism of Vibrio alginolyticus infection .

Objective To investigate the effects of 2-(3carboxy-1-oxoprogy1)amino-2-deoxy-D-glucose(COPADG) on the proliferation and cell cycle of human esophageal cancer cells Eca-109 and TE-1.Methods In vitro experiments,MTT colorimetric assay was performed to determine the growth inhibitory rates of Eca-109 and TE-1 cells treated by COPADG.Flow cytometry was applied to observe the change of cell proliferation cycle and apoptosis index.Cell morphological change was observed by transmission electron microscopy.Results COPADG inhibited effectively the growth of esophageal cancer cells Eca-109 and TE-1 in a time-and dose-dependent manner(P

Heritable changes in gene expression are regarded as epigenetics,which do not involve coding sequence modifications.The study of ophthalmology epigenetics is a rapidly growing area in biomedical research.Epigenetic mechanisms principally include DNA methylation,histone modification,chromatin remodeling and noncoding RNA.Aberrant DNA methylation and histone modification are linked to a number of age-related disorders,such as cancer,autoimmune and others.In recent years,the modulations of epigenetic changes on the pathogenesis of eye disorders and their roles in therapeutic interventions are drawing more and more attention,and these studies deepen the understanding of relevant diseases.Since the epigenetic alterations are reversible,modifying epigenetic marks contributing to eye diseases provide a new approach to the development of disease prevention,diagnosis and therapies.Herein we discuss the roles of epigenetic changes in eye disease development,hoping that ophthalmologists and researchers pay attention to these researching cues in pathogenesis of eye disorders caused by genetic expression alterations in response to environmental changes,importantly,to the implication for relevant eye disease therapy and prevention.

It is found that Virtual experiment(VE)can not only improve the experimental condition,enrich the experimental content,but also help to foster the innovation ability of the students. To bring the teaching contribution of VE into full play,it is important to note that VE should be combined with actual experiment and be introduced step by step. Meanwhile,the teach-ing staff should also acquire more learning and further technical skills.

The need for special medical services are described and analyzed from the connotation of the characteristics of several types and models,in the hope of providing reference for the study of special need of medical services.

Objective To observe the therapeutic effect of thalidomide(Thd)on rheumatoid arthritis and its relation with the expression of hypoxia-inducible factor-1?(HIF-1?).Methods Female SD rats were randomly divided into two groups:a normal group and a model group.Each group was further divided into three subgroups:the control group,the vehicle group and the Thd group.The model group was subjected to collagen-induced arthritis.The Thd group and the vehicle group were given Thd(600 mg/kg)once daily and its vehicle DMSO respectively.The profile of arthritis was assessed by observing the clinical symptoms and histopathology and a qualitative clinical score of arthritis.The expression of HIF-1?in synovial tissuses was further detected by Western blot and immunohistochemistry technics.Results Compared to the control group with arthritis,clinical signs and pathological changes of arthritis were improved one and two weeks after ad- ministration of Thd respectively,and the qualitative clinical score of arthritis was evidently lowered.The ex- pression of HIF-1?in the inflammed synovial tissuses was found to be enhanced(P