The pathogenesis of diabetic retinopathy is complicated.The vast network of multiple factors including unifying mechanism,inflammatory reaction,neuron degeneration and metabolic memory of glucose,and the four established pathogenic molecular pathways are hotspots of mechanism research for diabetic retinopathy.Nevertheless,these researches may be only one corner of the iceberg of DR mechanism,and we still face enormous challenges in DR mechanism research.Collaboration with multiple disciplines to study the relationship between DR and diabetes and other systemic diseases,search novel therapy targets may increase the result in an unexpected windfall for DR basic research.

Breast cancer is the most common disease in women worldwide, which not only threatened the women’s survival time, but also inlfuenced their quality of life as well. Within this challenge, it’s important to optimize the current multidisciplinary treatment stratagem for breast cancer. Radiotherapy is one of the most important treatment modality for patients with breast cancer, with the trend to shrink the irradiated volume and shorten the total fraction times in recent years. Intraoperative radiation therapy (IORT) as a fast and convenient procedure has the ability to deliver a high, single-fraction radiation dose to tumor beds with minimal exposure of surrounding tissues (lung, heart, etc.), which could be displaced or shielded right after the tumor removal during the surgical procedure. Right now, IORT has been either integrated as a boost technique in multimodal approaches using postoperative EBRT in the treatment of early breast cancer patients undergoing breast conservation surgery or used as a single dose accelerated partial breast irradiation technique for these patients. This review discussed the rationale of IORT, the beneifts and limitations of IORT, the indication and the clinical results of this procedure, including treatment related side-effects as well in order to provide the preliminary evidence based approach for early breast cancer patients.

Under the high pressure of employment, traditional teaching method that is based on inculcating the knowledge to students does not adjust current condition any more. So, we start to looking for a new, more suitable way of teaching.--Project Based-on Learning, and have analyzed the advantages in health information technology teaching by construction doctrine in combination with the concept and principle in wedlock construction. At the same time we introduce project Based-on Learning in concrete application to find a way to put the theory into practice.

Laser ablation of hard tissue allows very precise pre-programmed incisions with complete free geometry and it has advantage of leaving no tissue damages. Those disadvantages of thermal side effects and low cutting rates had been overcome by introducing ultra-short pulses and ultra-power laser systems. This review highlights the recent advances in the laser ablation of hard tissues.

OBJECTIVE:To prepare praziquantel aquogel suppositories and to establish its assay method.METHOD:The optimal formula of the base was optimized by orthogonal experiment and the content of principal agent-praziquantel was determined by UV spectrophotometry.RESULTS:The optimized formula of the base was as follows,poloxamer P407∶P188(15%∶20%),sodium alginate 0.6%and ethyl alcohol 15%,the praziquantel aquogel suppositories prepared in this formula could be jellified under the body temperature with optimal viscosity.Good linear relationship occurred when the detection concentration of praziquantel was within a range of 0.2～10mg/ml(r=0.9 999),the average recovery of which was(102.44?0.69)%.CONCLUSION:The design of the formula is reasonable;the preparation process is reliable and the method for assaying is simple,fast and accurate.

Objective To evaluate the efficacy of topicalJinhuang unction combined with oralSangqin mixture forthe patients with moderate to severe acnevulgaris.Methods A total of 72 patients with moderate to severe acne (Pills bury grade 2 or grade 3) were included and divided into a study group and a control group by random number table method, 36 in each group. The patients were treated for 2 months in the study group with topicalJinhuang unction combined with oralSangqin mixture, and in the control group with topical fusidic acid combined with oralSangqin mixture. The number of lesions and the Global Acne GradingSystem (GAGS) score for each patient were obtained and evaluated. The number offollicularPropionibacterium acnes was determined with real-time fluorescence quantitative polymerase chain reaction.Results After treatment, the number of papule (28.69 ± 10.50vs. 36.61 ± 10.10;t=3.262,P=0.002) was significantly less than that in the control group. The pustules was 1(0, 3) and the nodules was 0 (0, 1) in the study group, which were significantly less than those of 3(0, 15) and 0 (0, 4) in the control group (P<0.01). The GAGS scores was 13(6, 24), which was significantly less than those of 20(17, 32) in the control group significantly lower (Z=-6.482,P<0.01). The number reduction rate of follicular Propionibacterium acnes per unit area in the study group were 43.07% (-57.14%, 86.23%), which was significantly higher than that of 12.68% (-34.52%, 51.11%) in the control group (Z=-2.705,P=0.007). Conclusions TopicalJinhuang unction combined with oralSangqin mixture may reduce the damage of the skin, decrease the numbers of papule, pustules and nodules, depressPropionibacterium acnes in patients with moderate to severe acne vulgaris. TopicalJinhuang unction combined with oralSangqin mixture is superior to topical fusidic acid combined with oralSangqin mixture for the treatment of moderate to severe acne vulgaris.

Some biological and biochemical characteristics of metacercaria of Euparagonimus ce-nocopiosus obtained from crabs in the mountainous area of south Anhui, were compared with those of Paragonimus westermani from the same batch of crabs.The metacercariae of E. cenocopiosus prefer the location in heart rather than in the muscle of crabs. The average infection rate of crabs was 42.8% by E. cenocopiosus, while that by P. westermani was 100%. The infection rate of rats with E. cenocopiosus was 3/6 and 10/10 with P. westermani and the recovery rate of worm of these two species was 4.5-8.8% and 22-72.2% respectively. The number and pattern of protein bands of metacercaria of these two species by disc-PAGE and IEF technics were different.

Objective:To locate the region of antigenic epitopes recognized by monoclonal antibody(Z8) against human tumor necrosis factor ?(hTNF ?).Methods:Several recombinant fusion expression vectors were constructed which contained hTNF ? mutant genes deleted different parts respectively. After induction with IPTG, the fusion proteins were expressed and analyzed by SDS PAGE and Western blot.Results:Z8 specially recognized the fusion products which contained amino acids from 92 to 157 of hTNF ?, but not GST and its fusion protein with amino acids from 1 to 91 of hTNF ?.Conclusion:The antigenic epitopes recognized by Z8 were located in the sequence region 92 157 of hTNF ?.

Stem cells exist not only in the developing mammalian embryo but also in certain areas of various adult tissues. In embryo, they can take part in the development of tissues and the whole organism while in adult, they are thought to be involved in cell metabolism. With the development of research in embryo and nervous system, the field of stem cells has become a hot point in scientific world. A brief summary is made on stem cell biology and its potential medical importance.

Parkinson's disease(PD) is a kind of degenerative disease caused by both genetic and environ-mental factors. Concerning these two factors, various animal models for parkinson's disease were made for the study. Transgenic animal models were made by the method of microinjection, electronic perforation, particle bom-bardment, virus vector transfection and so on, which can express exogenous target gene. These models imitated the process of Parkinson's desease induced by virulence gene and provided a powerful tool for investigation on e-tiopathogenesis, gene therapy and medical intervention. In this article, we reviewed the progress of genetic models associated with PD and theirs contribution to PD research.