Programmed cell death 1 (PD-1) is an important negative costimulatory molecule discovered in recent years, which is expressed on the surface of T and B cells and plays an important role in the regulation of cellular immune response and immune tolerance.After the combination of PD-1 and its receptor programmed cell death 1 ligand 1 (PD-L1), negative regulatory signals are transmitted to suppress the immune response.Under the activation of stimulating factors, PD-1 and PD-L1 are combined to weaken the conduction of downstream signaling pathways such as PI3K/Akt and ERK through recruitment of phosphorylated SHP2, thereby inhibiting the proliferation of T cells and the production of cytokines, inhibiting the immune response and participating in the occurrence and development of a large number of inflammatory diseases.PD-1 in the field of ophthalmology research is still in its infancy.As far as we know, PD-1 participates in ocular inflammatory diseases such as uveitis, sympathetic ophthalmia, allergic conjunctivitis, also is involved in corneal transplant rejection, optic nerve crush injury and optic myelitis, diabetic retinopathy, thyroid related ophthalmopathy, melanoma and other diseases, thus preventing the interactions between PD-1 and its receptor PD-L1 may become a new potential target for the treatment of ocular tumor, inflammation, autoimmune and neurodegeneration disease.In this article, the latest research progress of PD-1 and its receptor PD-L1 in the pathogenesis of ocular diseases were reviewed.

OBJECTIVE:To provide the reference for the improvement of GCP(good clinical practice)regulations and protection of subject's human rights.METHODS:The status quo of the protection of subject's right of informed consent and the elements for the right of informed consent and the existing problems in its practice in China were analyzed.RESULTS & CONCLUSIONS:China should further promote the legislation of clinical trials,reinforce the legal education of researchers,and emphasize the supervision on the illegal tort act.

Objective To investigate the expressions of RTN4 and TG2 in papillary thyroid cancer tissues and their clinical pathological significance.Methods A total of 40 samples of papillary thyroid cancer tissues and 20 samples of para‐carcinoma tissues were collected from the Department of Pathology ,Renmin Hospital of Wuhan University ,China.The expression levels of RTN4 and TG2 were detected by means of immunohistochemical staining and their relationship with clinicopathological charac‐teristics of papillary thyroid carcinoma was analyzed.SPSS 13.0 soft package was used for one‐way analysis of variance and SNK test of the average absorbance and the average positive area rate (α=0.05).Bivariate correlation analysis of the positive area rate of the expressions of RTN4 and TG2 was conducted (α=0.05).Results ①The expression levels of RTN4 and TG2 were much higher in the papillary thyroid carcinoma tissues than those in the para‐carcinoma tissues (P<0.05). ② The expres‐sion levels of RTN4 and TG2 were significantly higher in lymph node metastasis group than those in the group without lymph node metastasis (P<0.05).The positive expression rates of RTN4 and TG2 were much higher in clinical stage Ⅰand Ⅱ groups than those in clinical stage Ⅲ and Ⅳ groups (P<0.05).They were significantly increased in low differentiation group than in high or moderate differentiation group (P< 0.05).The expressions of RTN4 and TG2 were not statistically associated with tumor size ,age and sex (P>0.05). ③The positive correlation was found between the expressions of RTN4 and TG2 in papilla‐ry thyroid carcinoma tissues (r=0.587 ,P<0.05).Conclusion ① The expressions of RTN4 and TG2 were up‐regulated in pa‐pillary thyroid carcinoma tissues ,which is related with over‐proliferation and increase of apoptosis resistance of cancer cells. ②RTN4 and TG2 play an important role in the proliferation and metastasis of papillary thyroid carcinoma. ③ RTN4 and TG2 may play a synergistic role in the development of papillary thyroid carcinoma.

Objective:To study the significancy of P27 Kip1 expression, cell apoptosis and cell cycle distribution in the evaluation of sensitivity in oral cancer chemotherapy. Methods:40 cases of oral tumor were treated with MTX,CDDP and PYM by subcutaneous implantable drug pump.Operation was performed 2~4 weeks after the induction chemotherapy. Cell cycle distribution, apoptosis and P27 Kip1 protein expression in the removed tumor tissue were detected by fllowcytometry and indirect fluoressent assay pre-and post-treatment.Results:(1)After induction chemotherapy S,G_2M and PI ration in cell cycle distribution decreased,G_0/G_1, AP and FI_ p27 increased(P

Craniocerebral Trauma ; surgery ; Humans ; Maxillofacial Injuries ; surgery ; Reconstructive Surgical Procedures ; methods

In response to problems from the development of multi-drug-resistant pathogenic bacteria,it is urgent to find new antimicrobials.Antimicrobial peptides(AMPs) are a kind of ideal new antimicrobials with the advantages including their potential for broad-spectrum activity,rapid bactericidal activity and low propensity for resistance development,and have a bright future.Alpha-helical antimicrobial peptides are a main kind of AMPs.The following features was reviewed and elucidated including the structure and activity relationship(SAR) from different aspects including the degree of helicity,hydrophobic moment,hydrophobicity,net positive charges and so on,and the application of SAR on the molecular design and improvement of AMPs.

Objective To investigate the key points in the nursing work of esophageal waterperfused high-resolution manometry (WHRM).Methods Summarized the nursing experiences before,during and after WHRM of 153 patients.Results Only 5 cases could not finish the test due to failure of intubation.23 cases complained about nasopharyngeal discomfort but follow-up monitoring was unremarkable.Conclusion In order to ensure the completion of WHRM,nursing cooperation requires serious assessment and preparation before manometry,intimate observation of patients' condition during manometry,and keep the catheter disinfection after manometry.

Objective To describe the patients′satisfaction with multimodal analgesia management after total knee arthroplasty. Methods 110 patients with total knee arthroplasty selected from February 2013 to February 2014 were recruited to complete a questionnaire, which was composed of the Visual Analogue Scale (VAS) , the Houston Pain Outcome Instrument (HPOI), and the Scale of Perceptions of Patients′Pain. Results VAS scores at different times were ranged from (2.14±1.21) points to (1.19±0.62) points, mean rating for general satisfaction with pain management was 80.04% (136.06/170.00), satisfaction with education on pain control was only 63.20% (37.92/60.00). Patients with different age and educational level of satisfaction with pain control had significant differences (P<0.05). Patients who thought relieving pain was harmful was 56.4% (62/110), the patients who did not understand the impact of pain on the body was 62.7% (69/110), the patients who did not understand the common methods of analgesia was 59.1%(65/110), the patients who did not understand the adverse reactions of pain measures was 63.6% (70/110). Conclusions Patients′satisfaction with the analgesic effect of multimodal analgesia is higher after total knee arthroplasty, while satisfaction with education on pain control was lower. Nurses should strengthen health education to patients with total knee arthroplasty about knowledgement of multimodal analgesia.

Objective To investigate the effect of cytokine-induced kill cells( CIK)of the cord blood on bladder transitional cell carcinoma T24 in vitro. Methods The cord blood mononuclear cells( CBMC)were induced with different cytokines such as Interleukin 2( IL-2 ),interferon γ( IFN-γ),CD3Mc-Ab into CIK cells. The proliferation ability of CIK cells was measured by calculation in different culturing time,and the phenotype of CIK cells was analyzed by the flow cytometry. Bladder transitional cell carcinoma T24 cells were mixed with CIK cells to detect the mortality of the cancer cells with CCK-8 method in vitro. Results With the cultured time of CIK cells prolong,both the number and killing activity increased. the ratio of CIK cells and T24 cells were 1:2. 5,1:5,1:10 and 1:20 when the kill rate of T24 cells by CIK cells were(18. 98 ± 2. 61)%, (35. 59 ± 4. 74)%,(45. 34 ± 5. 03)% and(69. 24 ± 5. 19)%. Conclusion The CIK cells of the cord blood is proved to be with strong anti-cancer activity against T24 cells in vitro.

Objective To explore the current situation and the relationship of job satisfaction,job performance and career plateau in senior health technical personnel.Methods The career plateau questionnaire,job satisfaction scale,job performance scale were adopted to carry out the questionnaire survey among 410 senior health technical personnel in Wanzhou district of Chongqing.The results underwent statistical description,correlation analysis and regression analysis.Results Senior health technical personnel's career plateau score was 2～5 points,with an average of (3.26±0.58) points,job satisfaction score was 20～60 points,with an average of (44.81±11.46) points,job performance score was 20～75 points,with an average of (35.79 ± 9.55) points.The score of career plateau was significantly negatively correlated with job satisfaction,and was significantly negatively correlated with job performance.The content of plateau was a factor affecting job satisfaction,and the content and the level of plateau were influencing factors of job performance.Conclusions Career plateau in senior health technical personnel was in a moderate level,while job satisfaction and job performance were relatively low.Hospital managers should take in occupation development assistance strategy and reduce negative influence of career plateau to improve job satisfaction and job performance in senior health technical personnel.