Objective to analyze the basic situation of university and college teachers′psychological empowerment,and investigate the effect of perceived organizational support,organizational identification,supervisory commitment on psychological empowerment. Methods the instruments which were used include perceived organizational support questionnaire(POS),organizational identification questionnaire(OIQ),supervisory com-mitment scale(SCS)and psychological empowerment scale(PES). A total number of 1 500 teachers were recruited conveniently from 6 university and colleges. Results the average score of psychological empowerment was 60.09±14.21. Positive correlation was found among perceived organiza-tional support,organizational identification,supervisory commitment and psychological empowerment(P < 0.05). Perceived organizational support, organizational identification and supervisory commitment explained 86.5% of variance of psychological empowerment. Conclusion Overall level of university and college teachers′psychological empowerment is in moderate or above degree. Perceived organizational support,organizational identifi-cation,and supervisory commitment can predict a deep level of psychological empowerment.

Objective To explore the role of remote ischemic preconditioning(RIPC)in prevention of contrast -induced nephropathy(CIN)in elderly patients undergoing coronary artery angiography(CAA).Methods 106 elderly patients were enrolled in this randomized control trial.According to random number table,the patients were randomized into control group (n =53)and RIPC group(n =53).All of the patients received 1 000mL of 0.9% sodium chloride injection before CAA.The RIPC group patients underwent RIPC in their right arms with sphygmomanometer cuff infla-tion for 5 minutes prior to the CAA,three cycles were repeated.Serum creatinine was detected before and 48 hours after CAA.Results CIN was reported in 10 cases in the control group and 3 cases in the RIPC group(χ2 =4.30, P =0.04).The levels of serum creatinine were increased[(96.38 ±9.50)μmol/L vs (88.87 ±10.24)μmol/L] after CAA in the control group(t =2.28,P =0.03),and there was no difference in the RIPC group(t =1.17,P =0.24).Conclusion RIPC has a protective effect on CIN in elderly patients in our study.Since this method is harm-less and cost effective,further studies is required to popularize PIPC to our clinical practice for prevention of CIN.

OBJECTIVETo evaluate the expression of glucose transporter-4 (GLUT4) mRNA in skeletal muscle and subcutaneous adipose tissues and investigate the mechanism of posttraumatic insulin resistance.

METHODSSixteen adult male Wistar rats were randomly divided into 2 group (n equal to 8 in each group), i.e., severe traumatic brain injury (TBI) group due to falls from a height and normal control group. Blood glucose and serum insulin were measured at 0.5 h before trauma and 3 h, 24 h, 72 h, 7 d after trauma, respectively. And insulin sensitivity was calculated by insulin activity index (IAI) formula. Skeletal muscle and subcutaneous adipose tissue samples were collected at the same time when blood was sampled. The changes of expression of GLUT4 mRNA were observed using reverse transcription-polymerase chain reaction (RT-PCR).

RESULTSAccompanied by the decrease of insulin sensitivity, the expression of GLUT4 mRNA was significantly decreased in adipose tissues at 24 h and 72 h after trauma (P less than 0.01), however, such phenomena did not appear in skeletal muscle samples.

CONCLUSIONSTo some extent, the development of posttraumatic insulin resistance is related to the abnormality of transcription activity of GLUT4 gene. Adipose tissues show some difference in the transcriptional level of GLUT4 gene after trauma as compared with skeletal muscle tissues.

Adipose Tissue ; metabolism ; Animals ; Brain Injuries ; metabolism ; physiopathology ; Glucose Transporter Type 4 ; metabolism ; Insulin Resistance ; physiology ; Male ; Muscle, Skeletal ; metabolism ; RNA, Messenger ; metabolism ; Rats ; Rats, Wistar

OBJECTIVETo analyze the dynamic change of serum protein S100b in patients with traumatic brain injury and its clinical value in assessing brain damage.

METHODSAccording to Glasgow coma scale (GCS), 102 cases of traumatic brain injury were divided into mild brain injury group (GCS > or = 13, n = 31, Group A), moderate brain injury group (8 < GCS < 13, n = 37, Group B) and severe brain injury group (GCS < or = 8, n = 34, Group C). Serial S100b concentrations were analyzed by enzyme-linked immunosorbent assay (ELISA) in blood samples taken on admission, 12 h, 24 h, 48 h, 72 h and 7 days after traumatic brain injury.

RESULTSThe severe brain injury group showed significantly higher concentration of serum S100b, with earlier increase and longer duration, than the mild and moderate brain injury groups. The patients with higher S100b exhibited lower GCS scores and poor clinical prognosis. The increase in S100b could emerge before clinical image evidence indicated so.

CONCLUSIONSSerum S100b can be used as a sensitive index for assessment and prediction of traumatic brain injury severity and prognosis.

Adolescent ; Adult ; Aged ; Brain Injuries ; blood ; Enzyme-Linked Immunosorbent Assay ; Humans ; Middle Aged ; Nerve Growth Factors ; blood ; S100 Calcium Binding Protein beta Subunit ; S100 Proteins ; blood

Objective To summarize the clinical data of 45 cases of familial adenomatous polyposis(FAP) and the experiences of treatment and diagnosis of FAP. Methods Retrospectively analyzed of the clinical data was made on 45 FAP patients.The choice of operative procedure included total colectomy+ileostomy in 25 cases,subtotal colectomy+rectal polyposis electrocautery in 15,and total colectomy with ileo-anal anastomosis in 5. Results Average age of patients at first diagnosis was 33.5 years. A family history was found in 35 patients. Bleeding, diarrhea, pain are common clinical presentations, and the numbers of polyposis were all more than 100. All patients without malignant change survived for 3-21years;and metastasis of liver was the main cause of death in patients with malignant change. There were age differences between malignant and non malignant group. Conclusions FAP lacks typical clinical presentation, and misdiagnosis is not uncommon. Surgical therapy should be done on an individual basis and according to the actual condition of patients.

Adult ; Antigens, CD34 ; metabolism ; Humans ; Male ; Neoplasms, Fibrous Tissue ; metabolism ; pathology ; surgery ; Prostatectomy ; Prostatic Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

Epstein-Barr virus (EBV) is a human herpesvirus associated with important human diseases, including infectious mononucleosis syndrome, malignant lymphoma, and nasopharyngeal carcinoma. The mechanism of EBV entry into host cells remains a subject of intensive research. After decades of study, researchers have identified several key proteins and different patterns of EBV intrusion into host cells. The viral surface glycoproteins, gp350/220, gp42, gB, gH, and gL, are involved in interactions with the CR2 receptor on the surface of B lymphocytes during viral entry. However, the majority of epithelial cells lack CR2 receptor expression, which makes viral invasion much more complex than in B lymphocytes. Three different models have been proposed to explain how EBV enters epithelial cells: (1) "transfer of infection", mediated by B lymphocytes or Langerhans cells; (2) EBV utilizes its own proteins during the process of fusion with the cell membrane; and (3) progeny virions arising from EBV-infected epithelial cells cross lateral membranes into adjacent epithelial cells. This review will discuss the relevant mechanism of viral entry into B lymphocytes and epithelial cells during EBV infection.
Animals ; B-Lymphocytes ; virology ; Epithelial Cells ; virology ; Epstein-Barr Virus Infections ; virology ; Herpesvirus 4, Human ; genetics ; physiology ; Humans ; Viral Proteins ; genetics ; metabolism ; Virus Internalization

Objective To explore the feasibility of team-based learning (TBL) for practice teaching of internal medicine.Methods TBL was carried out in 40 interns from clinical medical students of eight-year program.Every team included 4 ～ 5 members.The course of rheumatoid arthritis was chosen according to the course syllabus.Results The students discussed enthusiastically in the team test and in-class application exercises.More than 80％ of the students expressed that TBL was helpful to understand the course content better,to learn the disease better,to elevate personal study ability and to know others' thought processes.76％ of the students supported to carrry out TBL again.Conclusions TBL is helpful for senior medical students to elevate their ability of applying course concepts to solve practical problems through a series of team activities.Improvement of teaching idea and skill is the key to perform TBL successfully.

Objective To detect the ZAP-70 and CD38 expression in these patients with chronic B lymphocytic leukemia (B-CLL) and explore their relationship and clinical significance. Methods The expressions of ZAP-70 and CD38 in bone marrow or peripheral blood of 21 patients with B-CLL were detected by flow cytometry. Results ZAP-70 was positively expressed in 9 of all patients, CD38 was positive in 8 of all patients. ZAP-70 and CD38 were both expressed in 8 patients, ZAP-70 and CD38 were none expressed in 8 patients. Conclusion CD38 and ZAP-70 expression can offer important prognostic information. Cases of B-CLL positive for ZAP-70 and CD38 indicate a worse prognosis. There is a good correlation between these new prognostic factors.

ObjectiveTo investigate the effect of rosiglitazone (RSG), a high-affinity synthetic agonist for PPAR-γ, on the expression of receptor activator of NF-κB ligand (RANKL) and osteoprotegerin (OPG)in rheumatoid arthritis fibroblast-like synoviocyte (RA-FLS) and the underlying mechanisms. MethodsRAFLS were incubated with different concentrations of RSG(0, 5, 10, 15, and 20 μmol/L) for 3 days, RAFLS proliferation was detected by Cell Counting Kit-8 assay, and then the expression of RANKL and OPG was examined by real-time PCR and Western blot. The expression of phosphorylated ERK, p38 and JNK was also detected after RA-FLS was incubated with RSG(0, 15, and 20 μmol/L) for 3 days. One-way ANOVA and Bonferroni were used for statistical analysis. ResultsRSG (5, 10, 15, and 20 μmol/L) had significantly inhibited the expression of RANKL mRNA(0.503±0.005, 0.438±0.031, 0.161±0.042, 0.050±0.018) and protein (1.72±0.09, 1.58x±0.05, 1.46±0.11, 1.22x±0.14) in RA-FLS (F=200.820, F=13.602, P＜0.01 ), while the expression of OPG mRNA (2.8 ±0.5, 7.0 ±3.2, 8.4 ±2.3, 25.7 ±5.1 ) and protein ( 1.21 ±0.11, 1.52 ±0.16, 1.63±0.11, 1.91 ±0.03) increased significantly (F=26.531, F=24.872, P＜0.01), both in a dose dependent manner. The ratio of RANKL/OPG mRNA and protein significantly reduced (F=453.425, P＜0.01 ;F=4.173, P＜0.05 ). RSG (15, 20 μ mol/L) significantly inhibited the expression of p-ERK-1/2 protein (0.55±0.06, 0.45±0.06, F=6.991, P＜0.05). ConclusionRSG can inhibit RANKL expression in RA-FLS through p-ERK pathway.