Objective To explore the relation between prostaglandin E2(PGE2) and the mechanosensitivity of osteoblasts and to analyze its action mechanism in cellular level .Methods Osteoblasts cell line MC3T3-E1 cells were performed the pre-treatment by using 16 ,16-dimethyl prostaglandin E2(dmPGE2) .Then the regulating effect of PGE2 on intracellular calcium ion signal was ob-served;the activator agent and inhibitor of the protein kinase A (PKA) signal path were adopted to detect the participating effect of the PKA signal path in the regulating process .Results Compared with the blank treatment group ,dmPGE2 pre-treatment signifi-cantly increased the calcium ion signal intensity induced by hypotonic swelling stimulation in MC 3T3-E1 cells .This effect of dmPGE2 was mimicked by 8-bromo-cAMP(8br-cAMP) ,an activator of PKA pathway ;but blocked by PKI ,an inhibitor of PKA pathway .Conclusion dmPGE2 is able to up-regulate the calcium response induced by hypotonic swelling stimulation by activating PKA pathway ,which provides an important cellular mechanism for explaining PGE2′s anabolic effect in bone tissue .

Objective To assess the reliability and validity of the Chinese version of Conditions of Learning Effectiveness Questionnaire (CLEQ). Methods To translate and revise the Chinese version of CLEQ. A total of 176 baccalaureate nursing students were surveyed by the Chinese version of CLEQ and the results about the reliability and validity of the Chinese version of CLEQ were assessed. Results Cronbach's α of the total Chinese version of CLEQ was 0.956. Cronbach's α of four subscales were all over 0.70. The internal consistency was good. The reliability of Split half was 0.926 and retest reliability was 0.869. CVI of the four subscales were 0.91～1.00. The average CVI of the scale was 0.94. There were significant relationships among subscales. The correlation coefficient was 0.691～0.829. Four common factors were found through factor analysis, which explained the percent of 61.63% rotation sums of squared loadings. Conclusions The reliability and validity of the Chinese version of CLEQ were good, so it could be used to evaluate the level of clinical learning environment among nursing students.

Objective To evaluate the performance of bispectral index (BIS),auditory evoked potential index (AEPI) and cardiovascular response to electrical tetanus stimulus (ETS) for monitoring depth of sedation induced by propofol , analgesia produced by fenanyl and depth of isoflurane anesthesia. Methods Twenty ASA Ⅰ or Ⅱ patients of both sexes (11 males,9 females) aged 18-56 yr, weighing 50-80 kg undergoing elective brain surgery were studied. The patients were unpremedicated. The baseline BIS, AEPI, BP(SP, DP) and HR were measured before anesthesia. Propofol was infused at 0.25 mg?kg-1?min-1 and the infusion was stopped when the total amount of propofol infused reached 5 mg?kg-1 at the end of 20 min infusion. Fentanyl 2 ?g?kg-1 was then given i.v. Three minutes later the patients were intubated and mechanically ventilated. Tracheal intubation was facilitated by vecuronium 0.1 mg?kg-1. Anesthesia was maintained with isoflurane. Depth of sedation was measured using OAA/S scale during propofol infusion. ETS was given at the following time points: when the amount of propofol infused reached 2.5, 3.0, 3.5, 4.0, 4.5, 5.0 mg?kg-1,2 min after fentanyl administration and at 0.7, 1.0, 1.3 MAC isoflurane (end-tidal isoflurane concentration). BIS and AEPI values before and after ETS and changes in BP and HR (ABP, AHR) after ETS and the time for BP and HR to return to the pre-ETS value in 50% and 90% of the patients (TBP50%,TBP90%,THR50%,THR90% ) were recorded. Results BIS and AEPI were positively correlated with sedation depth. There were no significant changes in BIS and AEPI after ETS, but SP, DP and HR increased significantly after ETS( P

Objective To detect the expression of AKT2 in human colon cancer and understand its relationship with PTEN.Methods The expressions of AKT2 and PTEN were detected in 30 patients with normal colonic tissues,30 patients with colon adenoma tissues,and 64 patients with colon carcinoma tissues by immunohistochemical SP staining method.Results The positive expressive rate of PTEN presented a trend of progressive decrease from normal tissues,adenoma tissues to colon carcinoma tissues,while the positive expression rate of AKT2 presented a trend of progressive increase.PTEN expression was obviously higher in normal colon tissues than in colon adenoma tissues and colon cancer tissues(?2=68.855,P

Objective To study the changes in cortical activation of frontal lobes and temporal lobes between schizophrenic patients and comparison subjects during a verbal fluency task by using functional magnetic resonance imaging (fMRI). Methods Thirteen schizophrenic patients and 8 volunteers were studied during a verbal fluency task performance. fMRI of frontal lobes and temporal lobes was conducted at a GE 1.5 T Signa Horizon LX scanner while the subjects performed the task. Stimulus sequences were divided into six 30-second segments by using a task-activation paradigm that alternated between resting and stimulated states. Results Schizophrenic subjects demonstrated significantly less left frontal activation than comparison subjects during a word fluency task, and comparison subjects showed evidently more activation in left frontal lobes than in the right (P0.05). Conclusion These preliminary data suggest that fMRI has the sensitivity to detect the differences in activation between comparison subjects and schizophrenic patients during higher cortical functions.

Aim To assess the protective role of chry-sophanol in rats with diabetes-associated cognitive de-cline (DACD) and explore the potential molecular mechanisms.Methods The learning and memory performance was assessed by Morris water maze test;the activities of AChE,ChAT,iNOS and oxidative stress markers including CAT,SOD and GSH-PX in the hippocampus were detected using respective com-mercial kits.The level of BDNF was also measured with commercial ELISA kit.Results Chrysophanol significantly improved learning and memory functions in the diabetic groups.Additionally,the activities of AChE,BDNF also found to be evidently increased, while decreased activities of ChAT,iNOS,CAT,SOD and GSH-PX were observed in the hippocampus of dia-betic rats.Conclusions Collectively,chrysophanol has a protective role against DACD and this neuropro-tection is associated with increasing BDNF level.Chry-sophanol can also suppress the activities of iNOS, CAT,SOD and GSH-PX in diabetic rats.It is likely to be a novel therapeutic drug for the treatment of diabetic patients with cognitive deficits in clinical practice.

Objective To observe the clinical efficacy of Honggui capsule combined with chemotherapy in the treatment of lung cancer. Methods 61 cases of lung cancer patients were randomly divided into group A of 30 cases, treated with Honggui Capsule and chemotherapy, and group B of 31 cases treated with chemotherapy only by the envelope method. After both groups were treated for 21 days, the clinical effect, life quality improvement, improvement of TCM symptoms and the incidence of toxic and side effects in 2 groups were compared. Results After treatment, there was significant difference between group A and B in the tumor response rate (26.7% vs. 3.2%; χ2=4.927, P=0.026), Karnofsky (23.3% vs. 3.3%; χ2=5.410, P=0.020), and improvement of TCM symptoms (13.3% vs. 0.0%; χ2=4.423, P=0.035). During treatment, there was significant difference between group A and B in bone marrow suppression (33.3% vs. 58.1%; χ2=4.778, P=0.029), and gastrointestinal disturbance (16.7% vs. 58.1%; χ2=11.124, P=0.001). Conclusion Honggui capsule combined with chemotherapy has an enhanced efficacy and a detoxicating effect, besides it improves clinical symptoms and reduces the side effects of chemotherapy.

Described in this paper are the new development trends of LibQual+in foreign libraries, such as its modified analysis techniques, its perfected analysis methods, integrated LibQual+and other evaluation tools, further application of LibQual+evaluation analysis results.The successful application of LibQual+data analysis in University of California and University of York is a good inspiration to the domestic libraries.

Although thrombolytic therapy is the only method recommended by the Food and Drug Administration(FDA)for acute ischemic stroke,the time window limits its application.Thus,neuroprotective research,which has a wider application become the focus.This article summarizes the neruoprotective methods in animal researches and clinical trials.

Objective To discuss the early stage treatment of reduction and the curative effect in coxa dislo- cation with acetabular fracture. Methods According to the different type of coxa dislocation with aeetsbular frac- ture,22 patients were given the distinctive operation and drawn reduction. As to 22 cases combination with acetabu- lar fracture and basis of difference type of the fracture were selected the method of suitable operative entrance or in- ner fixation. In this gronp,22 patients were followed up about 6 month to 3 years(average 15.3 months) after opera- tion. According to the standard of America orthopedic surgery study were commented on curative effect. Results Excellent 15 cases,well 4 casea,pass 2 cases,bad 1 case. Total fine rate were 86% .Conclusion Each kinds type of the hip dislocation cases should needed emergency reduction. The operation treatments were selected first method to settlement the bone shatter displacement in acetabular fracture or unsuitable joint and unsteady joint.