49 research outputs found
X-raying the Birth of Binary Neutron Stars and Neutron Star-Black Hole Binaries
We consider fallback accretion after an ultra-stripped supernova (USSN) that
accompanies formation of a binary neutron star (BNS) or a neutron star-black
hole binary (NS-BH). The fallback matter initially accretes directly to the
nascent NS, while it starts to accrete to the circumbinary disk, typically
0.1\mbox{-}1\, \mathrm{day} after the onset of the USSN explosion. The
circumbinary disk mass further accretes, forming mini disks around each compact
object, with a super-Eddington rate up to a few years. We show that such a
system constitutes a binary ultraluminous X-ray source (ULX), and a fraction of
the X rays can emerge through the USSN ejecta. We encourage follow-up
observations of USSNe within and \sim
100\mbox{-}1,000\,\mathrm{day} after the explosion using Chandra, XMM Newton
and NuSTAR, which could detect the X-ray counterpart with time variations
representing the properties of the nascent compact binary, e.g., the orbital
motion of the binary, the spin of the NS, and/or the quasiperiodic oscillation
of the mini disks.Comment: 12 pages, 5 figure
The development of transversal competence of health service managers
In their pedagogical projects, health management courses focus on multidisciplinarity, interdisciplinarity, comprehensiveness and transversality, whose main merit is to question health issues from different theoretical perspectives. Analyzing these issues under many perspectives does not necessarily mean the development of transversal competences. The development and application of these competences suppose going beyond integrating curricular contents and theory/practice. They depend on how the knowledge will be articulated to changes at organizational, sectorial and institutional levels and on the coevolution between these competences and changes. It is understood that health services manager role is effectively transversal when he/she: (i) acts at organizational boundaries, fostering interaction between organizations and other actors in the system; (ii) provides (and receives) feedback to (and from) these actors; and (iii) these feedbacks help decision makers to undertake organizational changes to respond to the environment and shape it.Em seus projetos pedagĆ³gicos, os cursos de gestĆ£o de saĆŗde privilegiam a multidisciplinaridade, interdisciplinaridade, integralidade e transversalidade, cujo principal mĆ©rito Ć© problematizar as questƵes da saĆŗde sob diferentes perspectivas teĆ³ricas. Analisar as questƵes da Ć”rea da saĆŗde a partir de diversos prismas nĆ£o implica necessariamente no desenvolvimento de competĆŖncias transversais. O desenvolvimento e a aplicaĆ§Ć£o dessas competĆŖncias pressupƵem ir alĆ©m da integraĆ§Ć£o entre conteĆŗdos curriculares e entre teoria e prĆ”tica. Dependem de como os conhecimentos serĆ£o articulados Ć s mudanƧas nos nĆveis organizacional, setorial e institucional e da coevoluĆ§Ć£o entre essas competĆŖncias e essas mudanƧas. Entende-se que a atuaĆ§Ć£o do gestor de serviƧos de saĆŗde Ć© efetivamente transversal quando: (i) atua nas fronteiras organizacionais, fomentando a interaĆ§Ć£o entre as organizaƧƵes e outros atores do sistema; (ii) provĆŖ (e recebe) feedbacks para esses (desses) atores; e (iii) esses feedbacks auxiliam os tomadores de decisĆ£o a empreender mudanƧas organizacionais, de modo a responder ao ambiente e a moldĆ”-lo
Mechanical stretch increases CCN2/CTGF expression in anterior cruciate ligament-derived cells
Anterior cruciate ligament (ACL)-to-bone interface serves to minimize the stress concentrations that would arise between two different tissues. Mechanical stretch plays an important role in maintaining cell-specific features by inducing CCN family 2/connective tissue growth factor (CCN2/CTGF). We previously reported that cyclic tensile strain (CTS) stimulates alpha 1(I) collagen (COL1A1) expression in human ACL-derived cells. However, the biological function and stress-related response of CCN2/CTGF were still unclear in ACL fibroblasts. In the present study, CCN2/CTGF was observed in ACL-to-bone interface, but was not in the midsubstance region by immunohistochemical analyses. CTS treatments induced higher increase of CCN2/CTGF expression and secretion in interface cells compared with midsubstance cells. COL1A1 expression was not influenced by CCN2/CTGF treatment in interface cells despite CCN2/CTGF stimulated COL1A1 expression in midsubstance cells. However, CCN2/CTGF stimulated the proliferation of interface cells. Our results suggest that distinct biological function of stretch-induced CCN2/CTGF might regulate region-specific phenotypes of ACL-derived cells
ē“äøäŗä¾ćēØććęäŗŗēč·å¦ēč·éēØę¼ēæć®č©ä¾”(ē¬¬1å ±) : ēč·éēØę¼ēæåå¾ć«ćććå¦ēć®čŖå·±č©ä¾”
čŖæę»å ±åęäŗŗēč·å¦ć®ē“äøäŗä¾ćēØććēč·éēØę¼ēæć«ćććå¦ēć®ēč§£ć®ē¾ē¶ćęę”ććććØćē®ēć«ćę¬å¦3å¹“ę¬”å¦ēć«åƾćć¦ćę¼ēæåå¾ć«čŖå·±č©ä¾”čŖæę»ćå®ę½ććććć®ēµęć1.ę¼ēæå¾ćēč·éēØć«ć¤ćć¦čŖå·±č©ä¾”å¾ē¹ć®äøęććæććć2.ę
å ±ć®č§£éć»åęć»ēµ±åć®äøć§ćå„åŗ·é害ć«ć¤ćć¦å¦ēćå°é£ćęććē¾ē¶ćęććć«ćŖć£ććēč·éēØć®ēč§£ćé²ććććć«ćÆćå¦ēć®ēč§£ē¶ę³ć«åćććęå°ćä»å¾ćØćē¶ē¶ćć¦ććåæ
č¦ććć
ē“äøäŗä¾ćēØććęäŗŗēč·å¦ēč·éēØę¼ēæć®č©ä¾”(ē¬¬2å ±) : å®ęę¼ēæćØć®é¢äæćććæćēč·čØē»čØé²ć®åę
čŖæę»å ±åęäŗŗēč·å¦ēč·éēØę¼ēæć«å®ęę¼ēæćåćå
„ććććØććå¦ēć®å¦ēæć«å½±éæćåć¼ćć¦ćććć©ćććē„ćććć«ćå¦ēćć°ć«ć¼ćć§ē«ę”ććēč·čØē»ććć³å¦ēć®ååæćę¤čØćććēµęćØćć¦ćå®ęę¼ēæå¾ć«ēč·čØē»ē«ę”ćč”ć£ćć°ć«ć¼ććÆććć§ćŖćć°ć«ć¼ćć«ęÆć¹ćēćæć«åƾććč¦³åÆć«ēē®ćć¦ćććēč·čØē»ć®ē«ę”ćØå®ęę¼ēæć®ć©ć”ććå
ć«č”ććććć®č³Ŗåć«ćÆęęå·®ćčŖććŖćć£ććčŖē±čØč¼ććēč·éēØć«å®ęę¼ēæćåćå
„ććććØćÆę£č
ćć¤ć”ć¼ćøććććå¹ęēć ćØčćććć
OryzaExpress: An Integrated Database of Gene Expression Networks and Omics Annotations in Rice
Similarity of gene expression profiles provides important clues for understanding the biological functions of genes, biological processes and metabolic pathways related to genes. A gene expression network (GEN) is an ideal choice to grasp such expression profile similarities among genes simultaneously. For GEN construction, the Pearson correlation coefficient (PCC) has been widely used as an index to evaluate the similarities of expression profiles for gene pairs. However, calculation of PCCs for all gene pairs requires large amounts of both time and computer resources. Based on correspondence analysis, we developed a new method for GEN construction, which takes minimal time even for large-scale expression data with general computational circumstances. Moreover, our method requires no prior parameters to remove sample redundancies in the data set. Using the new method, we constructed rice GENs from large-scale microarray data stored in a public database. We then collected and integrated various principal rice omics annotations in public and distinct databases. The integrated information contains annotations of genome, transcriptome and metabolic pathways. We thus developed the integrated database OryzaExpress for browsing GENs with an interactive and graphical viewer and principal omics annotations (http://riceball.lab.nig.ac.jp/oryzaexpress/). With integration of Arabidopsis GEN data from ATTED-II, OryzaExpress also allows us to compare GENs between rice and Arabidopsis. Thus, OryzaExpress is a comprehensive rice database that exploits powerful omics approaches from all perspectives in plant science and leads to systems biology
Attentional Set-Shifting Deficit in Parkinsonās Disease Is Associated with Prefrontal Dysfunction: An FDG-PET Study
The attentional set-shifting deficit that has been observed in Parkinsonās disease (PD) has long been considered neuropsychological evidence of the involvement of meso-prefrontal and prefrontal-striatal circuits in cognitive flexibility. However, recent studies have suggested that non-dopaminergic, posterior cortical pathologies may also contribute to this deficit. Although several neuroimaging studies have addressed this issue, the results of these studies were confounded by the use of tasks that required other cognitive processes in addition to set-shifting, such as rule learning and working memory. In this study, we attempted to identify the neural correlates of the attentional set-shifting deficit in PD using a compound letter task and 18F-fluoro-deoxy-glucose (FDG) positron emission tomography during rest. Shift cost, which is a measure of attentional set-shifting ability, was significantly correlated with hypometabolism in the right dorsolateral prefrontal cortex, including the putative human frontal eye field. Our results provide direct evidence that dysfunction in the dorsolateral prefrontal cortex makes a primary contribution to the attentional set-shifting deficit that has been observed in PD patients
Phase I trial of multidrug resistance-associated protein 3-derived peptide in patients with hepatocellular carcinoma
Genome-wide association study of lung adenocarcinoma in East Asia and comparison with a European population
Lung adenocarcinoma is the most common type of lung cancer. Known risk variants explain only a small fraction of lung adenocarcinoma heritability. Here, we conducted a two-stage genome-wide association study of lung adenocarcinoma of East Asian ancestry (21,658 cases and 150,676 controls; 54.5% never-smokers) and identified 12 novel susceptibility variants, bringing the total number to 28 at 25 independent loci. Transcriptome-wide association analyses together with colocalization studies using a Taiwanese lung expression quantitative trait loci dataset (nā=ā115) identified novel candidate genes, including FADS1 at 11q12 and ELF5 at 11p13. In a multi-ancestry meta-analysis of East Asian and European studies, four loci were identified at 2p11, 4q32, 16q23, and 18q12. At the same time, most of our findings in East Asian populations showed no evidence of association in European populations. In our studies drawn from East Asian populations, a polygenic risk score based on the 25 loci had a stronger association in never-smokers vs. individuals with a history of smoking (P interaction ā=ā0.0058). These findings provide new insights into the etiology of lung adenocarcinoma in individuals from East Asian populations, which could be important in developing translational applications