Objective To understand the current situation of medical postgraduates'!honesty edu-cation, find the weak point and explore new ways of the honesty education. Methods The honesty educa-tion survey questionnaire was designed and conducted to the postgraduates of Grade 2014 in Peking University Health Science Center. The research contents included the basic information of postgraduates, honesty cognition, clean and self-discipline, honesty education, the recommendation of honesty education and the application of honesty education carrier. 1 038 questionnaires of a total of 1 142 questionnaires were recovered and the recovery rate was 90.9%. EPIData3.0 software was used for double entry and database establishment, and SPSS 19.0 software for statistical treatment. Results 82.3% (854) of the postgraduates recognized the work of clean government, but only 62.1% (644) of the postgraduates concerned about it. 78.3% (813) of the postgraduates expressed hatred for the dishonest behavior and hoped to eliminate it. 77.6%(806) postgraduates often paid attention to honest education content which was pushed by the new media. 16.5% (171) postgraduates thought that the new media was very important to the honest cognition. Conclusions We should pay more attention to medical postgraduates'!honesty education, find its weak points according to the investigation and make full use of the network and new media. And at the same time we should combine the actual environment to establish a hierarchy of honesty education system, and carry out honesty education through total environment which contains the school administrators, instructors/head teachers and tutors.

Many genetic events have been described to be involved in the development of tumor,but a lot of recent researches proved that epigenic events also played an important role in it.DNA methylation is one of the common modification of epigenic events,the binding of methyl-CpG binding domain proteins has been shown to lead to transcriptional repression of many tumor repressor genes.

Academic ethics is closely related to the construction of the world class disciplines,the academic ethics of university mentors and their graduate students are especially important to the development of disciplines and Universities.This article was based on a survey which used two-way evaluation conducted at Peking University Health Science Center,investigated the cognition,current status,misconduct and possible causes,as well as related trainings of academic ethics between mentors and mentees,furthermore,this article also analyzed the application of mentor-mentee two-way evaluation in the academic ethics trainings for post graduate students.

Objective To investigate the application of strain rate imaging in quantitative assessment of left ventricular regional diastolic function after intracoronary stent implantation.Methods Fifty-six healthy person and 60 patients with coronary artery disease were performed quantitative assessment of left ventricular regional diastolic function by apical four chamber view,apical two chamber view and left ventricular long axis view before and after intracoronary stent implantation using strain rate imaging.Results Compared with those of normal myocardium,the peaks of strain rate curve at diastole of ischemic myocardium were reduced,and were increased after operation (P ＜ 0.05).Conclusions Intracoronary stent implantation can significantly improve the blood supply to the ischemia myocardium.Strain rate imaging can quantitatively analyze the changes of left ventricular regional diastolic function.

Background Limbal stem cells (LSCs) play an important role on the stability of corneal epithelium and corneal transparency.Rho-associated coiled-coil containing protein kinase (ROCK) inhibitor can promote cell proliferation and reduce apoptosis,such as human embryonic stem cells and karatin epithelial cells.Objective This study was to investigate the improving effect of Y-27632,a ROCK inhibitor,on the activity of rabbit LSCs in corneal preservation medium.Methods Corneal preservation solution was prepared by adding 12.5％ chondroitin sulfate,10.0％ low molecular dextran,20.0 mg/L dexamethasone,100 mg/L tobramycin sulfate,9.5 g/L Hepes and 0.375 mg/L L-glutamine in MEM.The corneas of New Zealand white rabbits were collected and preserved in the corneal preservation solution with or without Y-27632 for 4,7,14 days,and the density and morphology of corneal endothelial cells were examined by using 0.25％ trypan blue staining and 0.2％ alizarin red staining.Isolated corneal epithelial cells were seeded on 3T3 feeder layer and cultured for 7-10 days until colonies formation.Colony shape of LSCs was observed under the light microscope,and colony-formation efficiency was analyzed after Giemsa staining by Image J software.Results The morphology and density of corneal endothelial cells were normal in the corneal preservation solution with and without Y-27632 for 4 days.In the seventh day after preservation,the cells remained the regular hexagon in shape in the preservation solution with Y-27632,however,the cellular membrane was slightly shrinking with the positive staining for alizarin red in the preservation solution without Y-27632.The density of corneal endothelial cells in the corneal preservation solution without Y-27632 was (2 262-± 75) cells /mm2,while in the preservation solution with Y-27632 was (2 425 ±95) cells/mm2(P＜0.001).The cloning spheres of LSCs were similar in preservation solution both with and without Y-27632 in the freshly isolated cornea or preserved corneas and exhibited more cells inside.But in 7 days and 14 days after preservation,the cloning spheres were much smaller in the preservation solution without Y-27632 group than those in the preservation with Y-27632 group.No significant differences were found in the cloning-formation rate and survival rate of corneal epithelial cells in corneas freshly isolated or preserved for 4 days in both groups (all at P＞0.05).In 7 days and 14 days after preservation,the active rates of corneal epitheli.al cells were (73.00±2.12)％ and (56.00±0.71)％ in the preservation solution with Y27632,which were significantly higher than (66.00 ± 4.00) ％ and (49.00 ± 0.71) ％ in the preservation solution without Y-27632,showing statistically significant differences between them (t =3.098,P =0.018;t =9.798,P =0.000).In addition,the cloning-formation rates of LSCs were (11.05±0.21)％ and (3.10±1.97)％ in the preservation solution with Y-27632 in 7 days and 14 days after preservation,revealing significantly elevation in comparison with (2.05 ± 1.20) ％ and (0.40 ±0.14) ％ in the preservation solution without Y-27632 (t =18.107,P =0.000;t=3.184,P=0.017).Conclusions Y-27632 promotes the vitality and cloning-formation ability of LSCs in corneal preservation medium,suggesting its potential use during storage of cornea.

Objective:To investigate the sensitivity and the specificity of scorpions amplification refractory mutation system ( ARMS) in comparing with that of direct DNA sequencing in the detection of BRAF gene mutations in patients with papillary thyroid microcarcinoma.Methods:Direct sequencing and ARMS were used simultaneously to detect BRAF mutation status in 56 patients with PTMC.Results:BRAF mutations were identified in 46 cases with a mutation rate of 82.9%by ARMS,while in 18 cases with a mutation rate of 32.1%by direct sequencing.Besides,the sensitivity of ARMS was 100%and that of direct sequencing was 39.1%.There were significant differences of both mutation rate and sensitivity between two methods ( P<0.01 ).Conclusion: Compared to direct sequencing,ARMS gains a higher sensitivity in the detection of BRAF mutations in samples with tiny lesions.

NanoString nCounter Analysis System is a newly developed gene expression detection platform that directly measures multiplexed mRNA levels through digital counting of individual mRNA transcripts.This technology uses as little as 100 ng of RNA and can obtain accurate gene quantitative data from up to 800 genes in one reaction.It requires no reverse transcription,enzymes and amplifications,and its sensitivity and accuracy are comparable to real time quantitative PCR.NanoString technology has been more and more extensively used in frontiers of biomedical research and clinics such as in validation of data from high-throughput platforms,gene expression profiling,gene regulatory network,molecular subtyping,diagnosis and prognosis of diseases.

Objective To explore the influencing factors of job burnout among nurses in level 2 and level 3 hospitals in Guangdong province. Methods A total of 2 066 first line nurses from 133 medical, surgical and intensive care units (ICU) of 23 level 2 and level 3 hospitals in Guangdong province were surveyed employing the questionnaire Hospital Nursing Human Resources Research during December 2013 to August 2014. Results In the multivariate logistic regression models, each additional doctor per nurse was associated with 1.34 times increase in the likelihood of high level of emotional exhaustion(EE). Nurses had a 57.4%higher risk of high level of EE when they worked overtime. Every one point increase in ancillary service score, and every one more year working as a nurse was associated with 5.4%, 2.3%increase in the likelihood of high level of EE, respectively. Nurses were 42.1%,40.9%more likely to exhibit high level of depersonalization(DP) when they worked in medical units or hospitals of level 3, compared with nurses of surgical units and hospitals of level 2. Nurses had a 29.5%higher risk of high level of DP when they worked overtime. Nurses holding higher positions had a lower likelihood(37.7%) of high level of reduced personal accomplishment(PA) compared with nurses holding lower positions. Nurses in medical units or ICUs had a 31.2%, 51.6%higher risk of high level of PA than nurses in surgical units, respectively. Conclusions Job burnout of nurses is at a quite high level in level 2 and level 3 hospitals in Guangdong province. The probability of the occurrence of burnout is related to the hospital, unit and nurse characteristics and nursing workloads.

Objective To investigate the risk factors and prognosis of the patients with malignant solid tumors complicated with the disseminated intravascular coagulation (DIC). Methods The clinical data of 54 malignant solid tumors patients complicated with DIC in Shanxi Provincial People's Hospital from January 2004 to December 2014 were analyzed retrospectively, which were compared with the malignant tumor patients without DIC. Multivariate logistic regression analysis was used to explore the risk factors of solid tumor complicated with DIC, and the effect of concurrent DIC on the prognosis of patients was analyzed. Results Multiple factor analysis showed that advanced tumor (OR = 0.252, P = 0.019), concurrent hypoproteinemia(OR=0.119,P=0.005),concurrent infection(OR=0.122,P=0.003)were the independent risk factors of the malignant solid tumor patients complicated with DIC. The case fatality rate of the patients with DIC was 85.2 % (46/54), which was higher than that of the control group (7.4 %, 4/54), and the difference was statistically significant(χ2=65.69,P <0.001).Conclusion Early detection of malignant solid tumors, positive correction of hypoproteinemia, and the effective control of infection as soon as possible can help to prevent the occurrence of DIC and reduce the death caused by DIC.