Objective To investigate the current status of cognitive level of patient safety culture in intensive care unit (ICU) nurses and analyze the influencing factors.Methods Totally 373 ICU nurses were investigated with the general information questionnaire,the Hospital Survey on Patient Safety Culture instrument (HSOPSC),the Report Barriers Questionnaire and the Condition of Work Effectiveness Questionnaire (CWEQ-Ⅱ).Results The mean rate of positive response on safety culture dimensions was 68.08％ in ICU nurses,Organizational learning-continuous improvement was the safety culture dimension with the highest positive response(89.95％),the lowest positive response was staffing(35.53％).Multiple regression analysis showed that the meaning of report,punitive culture,resources,opportunity,formal empowerment and ICU department were influencing factors of patient safety culture (P ＜ 0.05).Conclusions The level of patient safety culture in ICU nurses was medium,it remains a further improvement.Nursing managers should take targeted measures according to the influencing factors to enhance the cognitive level of patient safety culture in ICU nurses,strengthen the consciousness of safety culture,and improve the quality of intensive care.

OBJECTIVE:To evaluate the current situation and trend of narcotic analgesics used in our hospital.METHO-DS:The data of narcotics used in our hospital during 2003～2006 were analyzed statistically.RESULTS:Narcotic analgesic used in our hospital during 2003～2006 showed an upward trend year-on-year in both consumption quantity and consumption sum,much as in the consumption of morphine preparation.Consumption of Pethidine was decreasing year on year.However,the consumption of fentanyl injection had been ranking at the first place.CONCLUSION:The use of narcotic analgesics tended to be rational in variety,dosage form and route of administration.

ObjectiveTo investigate the relationship between novelty seeking and impulsivity behavior in rats.MethodsTwo models were used to test Novelty seeking,one was activity in a new environment model,the other was novel object preference model.And impulsivity was measured by T-maze.All rats(48) were used to examine the relationship between these two behaviour traits.ResultsNovelty seeking:the locomotor activities measured in a new environment for 30 min were (4695.58 ± 1579.87)cm,the exploring number of entries into the novel object area and time spending in the novel object area were respectively(20.92 ± 14.84)entries and (178.12± 135.22)s.Impulsivity:the average times of choosing low reward(LR) in the two test days were(4.71 ±2.71 ).Pearson product moment correlation was performed to investigate the relationship between these two behaviour traits,and the results suggested that there were notable correlation between novel object preference and impulsive decision making( r =0.295,P＜ 0.05 ),yet no significance were found between new environment activity and impulsive decision making.ConclusionNovelty seeking and impulsivity may be correlated with each other depending on different models.

Objective To investigate the expression of KLF4 in cervical carcinoma and its significance. Methods Immunohistochemistry and tissue microarray were used to examine the expression of KLF4 in 39 cases of carcinoma, 30 cases of normal cervical epithelial tissues and 28 cases of cervical cancer in situ. Results Moderate to strong nuclear staining for KLF4 was found in normal tissues and cervical cancer in situ. Interestingly, KLF4 expression was lost in 16 (P<0.05) of 39 carcinoma cases. However, KLF4 expression was not associated with clinicopathologic parameters, including tumor stage and differentiation. Conclusion Our observations indicate that KLF4 may function as a tumor suppressor in the pathogenesis of cervical cancer.

[Objective] Analyzing and summarizing the compatibility characters and the clinical applications of theAngle Medicinesof Aconite, in order to enlighten the modern applications. [Methods] According to the theories of classical prescriptions, arranging the compatibility characteristics and clinical applications of theAngle Medicinesof Aconite, there are three kinds ofAngle Medicines, including theAngles Medicineas independent prescriptions, theAngle Medicinesas the main part of prescriptions and theAngle Medicineas the combinations of prescriptions. At last, listing two cases of theAngle Medicinesof Aconite as the examples of clinical experience to demonstrate theAngle Medicines. [Results]This article sorted out 7 pairs ofAngle Medicinesof Aconite as the first kind, 8 pairsAngle Medicinesof Aconite as the second kind, and theAngle Medicinesof Aconite as combinations. In clinic, we use the Aconite, fried ginger and Licorice to treat long-term diarrhea, use Aconite, Semen Coicis and Patrinia to treat the hypogastralgia, and we gain the good effects, which can declare the clinical practicability of theAngle Medicines. [Conclusions]There are a lot of compatibility knowledge in classical prescriptions. Comprehending and grasping the compatibility characters and the clinical applications of the Angle Medicinesof Aconiteare is very unique and ingenious for modern clinic.

Objective To evaluate the influence of a selective Rho-associated protein kinase inhibitor (fasudil hydrochloride) on outflow facility in enucleated porcine,rabbit and bovine eyes.Methods At the constant perfusion pressure of 15 mm-Hg (1 kPa =7.5 mmHg),the baseline coefficient of outflow facility (C0) of the isolated porcine,rabbit and bovine eyes was recorded respectively.The enucleated porcine eyes were divided into two groups randomly (n =6),and they were control group and experimental group.The same grouping method was also used-C0 the ribbit and bovine eyes.The control group was subjected to GPBS perfusion,while the experimental group was treated with 100 μmol · L-1 fasudil solution,followed by recording the experimental coefficient of outflow facility (C1),as well as calculating ΔC (ΔC =C1-C0) and ΔC％ (ΔC％ =ΔC/C0).Finally,the paired t test and one-way analysis of variance were performed using SPSS 17.0.Results As for porcine eyes,the ΔC％ of the control group was (17.83 ± 3.84) ％ while the experimental group was (44.00 ± 6.44) ％;as for rabbit eyes,the ΔC％ of the control group was (15.50 ± 2.93) ％,while the experimental group was (31.67 ±6.54)％;as for bovine eyes,the ΔC％ of the control group was (11.67 ± 1.17)％,while the experimental group was (37.17 ± 4.48)％.The ΔC％ in the experimental group was significantly increased when compared with the control group in three animals,with significant difference (all P ＜ 0.05).There was no statistical difference in ΔC％ of three experimental groups among different kinds of animals (all P ＜ 0.05).Conclusion Fasudil can improve outflow facility in enucleated eyes of animals,and it can redistribute aqueous humor drainage to a wider area through directly regulating the cytoskeleton of cells and matrix,resulting in increased coefficient of outflow facility.

Objective To investigate the mechanisms of metformin in inducing autophagy of gastric cancer MNK-45 cells.Methods Human gastric cancer MNK-45 cells in logarithmic growth phase were incubated in the culture plates,and were divided into the intervention group [gastric cancer MNK-45 cells were intervened by metformin at different concentrations (2,4,8,16,32,64 mmol/L) for 24,48,72 hours] and the control group (gastric cancer MNK-45 cells were cultured in the DMEM medium).The inhibition rate of gastric cancer MNK-45 cells was detected by MTT method.The IC50 value of metformin on gastric cancer MNK-45 cells was 17 mmol/L.Gastric cancer MNK-45 cells were intervened by metforrnin at 17 mmol/L for 48 hours in the experimental group.Gastric cancer MNK-45 cells in the control group were cultured in DMEM medium at 17 mmol/L for 48 hours.The apoptosis of the gastric cancer MNK-45 cells of the 2 groups were detected by flow cytometry.The mRNA expressions of Bax and Bcl-2 of the 2 groups were detected by RT-PCR.The protein expressions of type Ⅰ LC3b,type Ⅱ LC3b,beclinl,AKT,p-AKT,mTOR,p-mTOR,P70s6k,p-P70s6k of the 2 groups were detected by Western blot.The measurement data were presented as (x) s,and were analyzed using the one-way ANOVA or repeated measures ANOVA.Data of the 2 groups were compared using the t test.Results The inhibition rates of gastric cancer MNK-45 cells were 3.0％ ± 1.1％,8.6％ ± 1.7％,15.9％ ± 1.6％,26.1％ ± 3.4％,37.5％ ± 2.3％,49.7％± 3.6％ after intervention by metformin at concentrations of 2,4,8,16,32,64 mmol/L for 24 hours,5.2％± 1.9％,10.4％±2.1％,26.9％± 1.6％,49.5％± 1.6％,59.1％±2.0％,82.1％±2.2％ after intervention by metformin at concentrations of 2,4,8,16,32,64 mmol/L for 48 hours,and 9.5％ ± 2.2％,17.6％ ± 1.4％,30.6％ ± 2.6％,63.2％ ± 2.6％,78.9％ ± 1.4％,93.3％ ± 2.7％ after intervention by metformin at concentrations of 2,4,8,16,32,64 mmol/L for 72 hours.There were significant differences in the inhibition rates among the 6 groups at the same time points (F =155.174,728.229,743.826,P ＜ 0.05),and significant differences were also observed within the same group at different time points (F =39.420,58.692,166.125,30.383,117.517,311.642,P ＜ 0.05).The apoptosis rates of gastric cancer MNK-45 cells in the experimental group and the control group were 25.4％ ± 1.7％ and 6.9％ ± 0.5％,with significant difference between the 2 groups (t =18.378,P ＜0.05).The relative mRNA expressions of Bax/Bcl-2 mRNA in the experimental group and the control group were 1.88 ± 0.16 and 1.00 ± 0.00,with significant difference between the 2 groups (t =9.743,P ＜ 0.05).The relative protein expressions of LC3 Ⅱ/LC3 Ⅰ and beclin 1 in the gastric cancer MNK-45 cells were 1.65 ± 0.08 and 1.47 ± 0.06 in the experimental group and 0.79 ± 0.03 and 0.56 ± 0.06 in the control group,with significant difference between the 2 groups (t =18.023,18.283,P ＜ 0.05).The relative protein expressions of AKT and P70s6k in the gastric cancer MNK-45 cells were 0.80 ±0.14 and 0.97 t0.21 in the experimental group and 0.96 ±0.17 and 1.37 ±0.23 in the control group,with no significant difference between the 2 groups (t =2.103,1.699,P ＞0.05).The relative protein expressions of mTOR and p-mTOR were 0.58 ± 0.l 1 and 0.57 ±0.15 in the experimental group and 1.88 ±0.23 and 2.36 ±0.25 in the control group,with significant difference between the 2 groups (t =11.293,10.979,P ＜ 0.05).No p-AKT and p-P70s6k expression was detected in the experimental group,and the expressions of p-AKT and p-P70s6k in the control group were 1.00 ± 0.00 and 1.00 ± 0.00,respectively.Conclusions Metformin could induce autophagy,inhibit proliferation and promote apoptosis of gastric cancer MNK-45 cells.The mechanism may be associated with the inhibition of mTOR expression and the expression of mTOR downstream proteins p-P70s6k by mefformin,and then the autophagy of gastric cancer MNK-45 cells happens.

Aspirin can effectively prevent ischemic cerebrovascular disease. However, as the existence of "aspirin resistance" phenomenon, ischemic events still occur in some patients during the aspirin treatment. This article mainly reviews the mechanisms, screening methods and treatment measures of aspirin resistance.

AIM:To investigate whether the cigarette smoke extract (CSE) causes senescence of C2C12 myo-blasts and the relationship between senescence and histone deacetylase 2(HDAC2).METHODS: Murine C2C12 cells were induced to differentiate into myoblasts.The HDAC2 activator and inhibitor were used to investigate the effects of CSE in the myoblasts on cell senescence and the expression of HDAC2.The expression of HDAC2 at mRNA and protein levels was determined by real-time PCR and Western blot, respectively, and the positive cell rate of β-galactosidase staining for cell senescence was also detected.RESULTS:The optimal concentration of CSE was 60 mL/L and the intervention time was 24 h.After the intervention of CSE, the positive cell rate ofβ-galactosidase staining was increased, accompanied with the reduction of HDAC2 expression at mRNA and protein levels.The expression of HDAC2 at mRNA and protein levels was increased by 4, 5, 6, 7-tetrabromobenzotriazole (TBB), accompanied with the reduction of positive cell rate ofβ-galacto-sidase staining.Furthermore, when HDAC2 expression at mRNA and protein levels was reduced by HDAC2 inhibitor valp-roic acid, the positive cell rate of β-galactosidase staining was increased.CONCLUSION: CSE promotes the senescence by reducing the expression of HDAC2 in C2C12 myoblasts.

Objective To investigate the mRNA and protein expressions of nine integrin subunits in human keloid-derived mesenchymal stem cells (KD-MSCs).Methods Cultured KD-MSCs and normal skin-derived MSCs (NS-MSCs) served as the experiment group and control group respectively.Real-time quantitative PCR and Western blot were performed to measure the mRNA and protein expressions of nine integrin subunits in the two groups respectively.Statistical analysis was carried out by t test.Results Real-time quantitative PCR showed no significant difference in the mRNA expression level of any of the integrin units α2,α3,α5,αV,α10,α11 or β1 between KD-MSCs and NS-MSCs (all P ＞ 0.05).The mRNA expression level of integrin α8 was decreased,while that of integrin β3 was significantly increased in KD-MSCs compared with NS-MSCs (both P ＜ 0.01).Western blot revealed that the changes in protein expression levels of integrin units α8 and β3 were consistent with those in their mRNA expression levels in both KDMSCs and NS-MSCs (both P ＜ 0.01).Conclusions Integrin units α8 and β3 may be involved in the occurrence and development of keloid,and the receptors made up of them may play important roles in the pathogenesis of keloid.