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HuR (human antigen R), an mRNA-binding protein responsible for poor prognosis in nearly all kinds of malignancies, is a potential anti-tumor target for drug development. While screening HuR inhibitors with a fluorescence polarization (FP) based high-throughput screening (HTS) system, the clinically used drug eltrombopag was identified. Activity of eltrombopag on molecular level was verified with FP, electrophoretic mobility shift assay (EMSA), simulation docking and surface plasmon resonance (SPR). Further, we showed that eltrombopag inhibited cell proliferation of multiple cancer cell lines and macrophages, and the anti-tumor activity was also demonstrated in a 4T1 tumor-bearing mouse model. The data showed that eltrombopag was efficient in reducing microvessels in tumor tissues. We then confirmed the HuR-dependent anti-angiogenesis effect of eltrombopag in 4T1 cells and RAW264.7 macrophages with qRT-PCR, HuR-overexpression and HuR-silencing assays, RNA stability assays, RNA immunoprecipitation and luciferase assays. Finally, we analyzed the anti-angiogenesis effect of eltrombopag on human umbilical vein endothelial cells (HUVECs) mediated by macrophages with cell scratch assay and Matrigel angiogenesis assay. With these data, we revealed the HuR-dependent anti-angiogenesis effect of eltrombopag in breast tumor, suggesting that the existing drug eltrombopag may be used as an anti-cancer drug.
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Objective To describe the status of publication papers on nursing of 47 grade three and first-class hospitals in Henan province from the year of 1991 to 2014 and provide valuable reference basis for the relevant departments to make policy. Methods The methods of literature metrology was used to analyze the amount, journals, key words distribution and other information of the 12 422 articles with the keyword 'nursing', which were included by China National Knowledge Infrastructure (CNKI) and Wanfang data, VIP database. Results The number of published articles of the investigated units was in the upward trend on the whole. But the number of annual published articles on the core periodicals was significantly lower than the total. The articles were mainly distributed on 3 nursing core journals, 5 non-nursing journals of Henan province, which were mostly for regional academic exchanges. 11 key words of nursing articles of Henan were the same as the nation but different for the sequence. Conclusions The grade three and first-class hospitals in Henan are in urgent need of the construction of systematic and standardized scientific research training system. The channel for the exchange of nursing academic needs to be widen. Clinical nursing research should be paid more attention to the characteristic field.
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Objective To understand the true feelings of the undergraduate nursing students after taking the elective course of the general situation of foreign nursing and provide reference for nursing higher education reform further.Methods The phenomenological qualitative research method was used and face to face in-depth interview was taken on 10 sophomore and 6 junior undergraduates about their feelings after taking the course of the general situation of foreign nursing.The interview data were sorted, analyzed and refined.Results The general situation of foreign nursing had aroused the yearning of nursing students on multinational nursing, deepen the cognition of nursing students on nursing specialty and also promoted the nursing students' perception of humanistic spirit.Conclusions The narrative educational which the teachers used in this course improves the professional cognition of nursing students.Situational case analysis is helpful to cultivate cultural sensitivity of students.The assessment method, personal reflection report & group cooperation, helps strengthen nursing students to rethink their own professional faith.
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Objective To understand the status of basic compensation for nurses′night-shift and nursing age allowance, and provide reference basis for government to make policy. Methods A total of 956 nurses of 22 hospitals from 18 cities in Henan were investigated and analyzed by the Nurse Night-shift Compensation Status Questionnaire. Results The human resources allocation of 71.9% (687/956) respondents was not up to standard. The nurses were under labor intensity. 60.06%(574/956) nurses needed to go to the night-shift for 2-3 times every week. 86.21%(824/956) nurses thought the intensity of labor was mild light or relatively high. The swing night shift compensation of 16.1% (153/956) nurses was none. The graveyard shift compensation of 52.1%(498/956) nurses was 1 to 10 yuan. 90.49%(865/956) nurses thought inked the compensation for night shift was unreasonable. 26.31% (252/956) nurses didn′t receive any payment for the night shift. Conclusions The managers in hospital should attach importance to the legitimate rights and interests of the nurses, optimize the management of human resources and improve the status of nurse shift rotation. They also need to perfect the management of nursing project cost to reflect the nurse work value.
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Objective To investigate the nursing aides' working experience of private pension institutions,and provide advances of decision-making on targeted pension institution development strategy.Methods 12 nursing aides for the aged were surveyed by using deep half-structural interviews and were recorded,noted during the whole interviews.Data were analyzed by coding step by step.Results The primary feelings of the participants including vocational responsibility was gradually enhanced in the interaction with the elderly,multiple service consciousness was built up during the process of meeting diverse demands of the elderly,standardized training demands formed from servicing in pension institutions.Conclusion Understanding and care are the key factors for the pension caregivers whose multiple service ability should be ascended,and their training should be further standardized.
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<p><b>OBJECTIVE</b>To establish a brain functional network of the whole brain based on glucose metabolism, and to evaluate the cost and efficiency of the functional network.</p><p><b>METHODS</b>18F-FDG PET of 148 healthy volunteers (30-59 years, n = 148) was performed in a resting state. Images were registered to atlas by using the statistical parametric mapping (SPM) software. The functional connectivity between 90 cortical and sub-cortical regions was estimated by correlation analysis.</p><p><b>RESULTS</b>Glucose metabolism brain functional networks had global efficiency greater than the lattice but less than the random graph, and local efficiency greater than random but less than lattice. This characteristically small-world behavior of the brain network was most consistently seen for low-cost to medium-cost networks. The small world regime was Cost-[0.0512, 0.5406]. The cost efficiency of the networks typically had a maximum positive value when the cost was 0.23.</p><p><b>CONCLUSIONS</b>Glucose metabolism brain functional networks have economical small-world properties. It is feasible to analyze the functional characteristics of human brain by study 18F-FDG PET images. This paper provides a new method for studies on brain function.</p>
Subject(s)
Adult , Female , Humans , Male , Middle Aged , Brain , Metabolism , Physiology , Brain Mapping , Fluorodeoxyglucose F18 , Glucose , Metabolism , Models, Neurological , Nerve Net , Positron-Emission Tomography , MethodsABSTRACT
Objective Electronic portal imaging devices (EPIDs) are widely used as a replacement of portal films for patient position verification, but the image quality is not always optimal. Because of very low density resolution, the portal imaging is difficult to be used clinically. In this study, several transforming models and the optimization exposure or acquisition conditions were studied for optimization portal imaging, which based on DicomRT platform built by ourselves. Methods 6 MV X-ray from Varian 21EX linac was used to generate portal images by Portal Vision aSiS00 amorphous silicon detector image acquisition system. The density resolution study was based on the number of the lines which could be seen in the image of a special Las Vegas image quality test board. The optimization calculating models were focused on equalization after stretch transforming discrete wavelet transform (DWT) and Butterworth high pass filters. The calculation was performed in Matlab language. Results The optimal numbers of MU, average frames and reset number were 4 - 5,3 - 4 and 2 - 3, respectively. The density resolution of optimized imaging via equalization after stretch transforming, DWT and Butterworth high pass filter transforming was markedly improved. The bone structure could be definitely distinguished. The number of lines distinguished in Las Vegas image via equalization after stretch transforming, DWT and Betterworth high pass filter transforming was 3, 4 and 5, respectivly. Conclusions The proposed transforming systems, including DWT edge detection and Butterworth high pass filter transform, are suitable for improving density resolving power of MV X-ray portal image.
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BACKGROUND: Decrease of regional cerebral blood flow (rCBF) perfusion of different degree exists in depressive patients, but the decreased ranges were different, different cerebral cortical and subcortical regions are involved.OBJECTIVE: To observe the types of abnormal rCBF perfusion in patients with depressive disorder.DESIGN: A diagnosis-based case-control analysis.SETTINGS: Department of Nuclear Medicine, Ruijin Hospital Affiliated to the Medical College of Shanghai Jiaotong University; Staff Room of Biomedical Engineering, Medical College of Shanghai Jiaotong University;Putuo District Mental Health of Shanghai City.PARTICIPANTS: The patients with depressive disorder were selected from the Putuo District Mental Health Center from January 1999 to December 2000, and 19 normal subjects matched by age were selected from the medical staff of the hospital as normal controls.METHODS: The patients with depressive disorder and healthy subjects were examined by single photon emission computerized tomography (SPECT), ethyl cysteinate dimmer (99Tcm-ECD) was performed, and the images were analyzed with the statistical parametric mapping (SPM). All the SPECT images were converted into DICOM format or ANALYZE-7 format at first, and then the images were standardized by taking MRI template as the template and smoothed, and the significantly different regions were evaluated by the statistical analysis and inferences with the Gaussian random theory.MAIN OUTCOME MEASURES: The differences of the cerebral blood flow perfusion in specific region and the changes of average rCBF images were mainly observed in the depressive disorder group and normal control group.RESULTS: All the 12 patients with depressive disorder and 19 normal healthy subjects entered the analysis of results. The SPM showed that the blood flow perfusion was decreased in bilateral frontal lobes, left superior temporal gyrus, left Brodmann area 20, left mamillary body of thalamus,right cingulated gyrus and right putamen in the patients with depressive disorder. The blood flow perfusion was increased in the right central frontal gyrus, right superior temporal gyrus, right occipital lobe and left central frontal gyrus.CONCLUSION: The rCBF is obviously changed in the frontal lobe, temporal lobe and limbic system of patients with depressive disorder.