姜黄素对阿尔茨海默病细胞模型miRNA106a的影响

目的探讨阿尔茨海默病(Alzheimer’s disease,AD)中姜黄素与miR-106a的关系。方法将PC12细胞随机分为5组:正常对照组(PC12细胞组),模型组(PC12细胞与浓度为4μg/mL的Aβ1-42共培养24h),anti-miR-106a组(造模成功后转染anti-miR-106a),姜黄素组(造模成功后加姜黄素,终浓度为20μmol/L)、共同作用组(anti-miR-106a加入姜黄素)。RT-PCR检测miR-106a的含量;Western blotting检测APP的含量。结果 RT-PCR结果显示,与正常对照组相比,模型组和anti-miR-106a组miR-106a含量均明显降低(P<0.05),而姜黄素组明显升高(P<0.05)。Western blotting结果显示,与正常对照组相比,模型组(P<0.05)和anti-miR-106a组(P<0.01)APP明显增加,姜黄素组APP比模型组明显降低(P<0.05)。结论姜黄素可通过正性调节miR-106a而参与AD的治疗。     

失效模式与效应分析在低能X线术中放疗的应用

目的:探讨失效模式与效应分析(FMEA)在低能X线术中放疗(IORT)中的应用,分析其在IORT中的潜在风险,初步探讨FMEA优化IORT管理、减少潜在风险发生的可行性。方法:由IORT团队(1名放疗科医生、1名放疗科物理师、2名外科医生、2名护士)成立FMEA工作小组,应用FMEA方法开展系统风险评估。确立流程模块,...     

护士发生差错事故后压力源与焦虑状况及应对方式的研究

目的 探讨护理人员发生差错事故后压力源、焦虑状况、应对方式及其关系.方法 对四川省4所综合医院发生差错事故后的203名护士采用自设护士发生差错事故后压力源调查表及焦虑自评量表、简易应对方式量表进行问卷调查.结果 护士发生差错事故后前3位压力源为:患者或家属发现及发现后投诉致纠纷赔偿,相关部门对当事人、科室的处罚(经济、行政),对当事人及科室通报批评;护士发生差错事故后SAs总分为(37.76±8.38)分,显著高于常模(P<0.01),焦虑发生率为83.25%;护士发生差错事故后,积极应对评分显著高于常模,消极应对评分显著低于常模(均P<0.01);护士发生差错事故后压力源评分与积极应对评分呈负相关关系(P<0.01).结论 护理管理部门应高度重视发生差错事故后护士的工作压力源和心理健康状况;改进管理策略,营造安全文化,引导护士采取积极应对方式减轻心理压力,提高心理健康水平.     

Which target for DBS in Parkinson's disease? Subthalamic nucleus versus globus pallidus internus

We selected 14 patients with advanced idiopathic Parkinson's disease (PD) and examined the clinical effects of STN DBS versus GPi DBS. Nine patients underwent bilateral STN DBS and five underwent bilateral GPi patients. All patients were followed for at least 12 months. The evaluation was performed on and off drug before surgery; on-drug/on-DBS and off-drug/on-DBS at 1, 2, 6 and 12 months after stereotactic surgery. At 1 and 3 months after surgery in off-drug/on-DBS condition, both groups showed an improvement in motor score (UPDRS II). Nevertheless, the results changed after long-term stimulation in the two groups. Chronic STN DBS is superior to GPi DBS in the amelioration of the clinical features and in the decrease of time spent in the off state. The efficacy in reduction of LID was comparable at 1 and 3 months after surgery, but the results were better in STN DBS after chronic stimulation. The L-dopa dose was reduced only in the STN group.     

Correction to: Spindle‑related brain activation in patients with insomnia disorder: An EEG‑fMRI study

Brain Imaging and Behavior -     

Overexpression of protease inhibitor-dead secretory leukocyte protease inhibitor causes more aggressive ovarian cancer in vitro and in vivo

The alarm anti-protease secretory leukocyte protease inhibitor (SLPI) is frequently overexpressed in ovarian cancer cells and has been proposed for inclusion in biomarker panels but function remains unclear. We hypothesized that SLPI overexpression promotes ovarian cancer growth and survival. Low SLPI-expressing Hey-A8 ovarian cancer cells were engineered to produce functional (WT) or protease inhibitor-null (PI-) mutant SLPI; lack of PI activity was confirmed by enzymatic assay. WT/SLPI and PI- mutants stimulated significant proliferation and survival of Hey-A8 ovarian cancer cells under basal culture conditions ( P ≤ 0.02), in soft agar colony number and size ( P ≤ 0.05), and in anoikis resistance ( P ≤ 0.005). SLPI protected the ovarian cancer survival factor, progranulin (PRGN), and HEY-A8 cells from degradation and apoptosis due to neutrophil elastase. PI-/SLPI cells had greater protective activity than WT/SLPI cells. HEY-A8 murine xenografts revealed enhanced solid tumor formation, dissemination, and invasion in WT/SLPI and PI-/SLPI mutants. Increased proliferation was demonstrated by Ki-67 staining ( P ≤ 0.02). Increased secreted PRGN was seen in culture and was also observed by immunohistochemistry in the SLPI transfectant xenografts. This study describes a PI-independent function for SLPI in ovarian cancer growth and dissemination. ( Cancer Sci 2009; 100: 434–440).