The impact of visiting the Intensive Care Unit (ICU) on children's and adolescents' psychological well-being: A systematic review

Abstract Objectives The visits of children/adolescents in adult intensive care units are increasingly more common. However, few studies examine the psychological impact of visiting. This systematic review aims to summarise the psychological effects that visiting family members has on children/adolescents. Research methodology A systematic review of research articles published from 1990 to January 2021 was conducted using PsycInfo, PubMed, and CINAHL. Inclusion/exclusion criteria were applied. Those studies included were evaluated using the Joanna Briggs Institute Critical Appraisal tools. A narrative synthesis of the results was conducted. Setting Adult intensive care unit. Results The review identified five studies (three of which qualitative), involving 141 children/adolescents. Although the experience of visiting was potentially traumatic, it enabled children/adolescents to better understand the reality and to preserve their relationships with family members. The impact of visiting was influenced by individual characteristics (e.g., age, past traumatic experiences) and by organisational characteristics (e.g., facilitated visit or not). Regardless of visitation, most children/adolescents presented anxiety and depression symptoms that need to be addressed. Conclusions Child/adolescent visitation seems to have positive effects, provided there is preparation and facilitation. Clinicians should pay attention to individual characteristics and optimise organisational factors (e.g., environment) in order to minimise potentially trauma-inducing aspects

Expression of the pair-rule gene homologs runt, Pax3/7, even-skipped-1 and even-skipped-2 during larval and juvenile development of the polychaete annelid Capitella teleta does not support a role in segmentation

<p>Abstract</p> <p>Background</p> <p>Annelids and arthropods each possess a segmented body. Whether this similarity represents an evolutionary convergence or inheritance from a common segmented ancestor is the subject of ongoing investigation.</p> <p>Methods</p> <p>To investigate whether annelids and arthropods share molecular components that control segmentation, we isolated orthologs of the <it>Drosophila melanogaster </it>pair-rule genes, <it>runt</it>, <it>paired </it>(<it>Pax3/7</it>) and <it>eve</it>, from the polychaete annelid <it>Capitella teleta </it>and used whole mount <it>in situ </it>hybridization to characterize their expression patterns.</p> <p>Results</p> <p>When segments first appear, expression of the single <it>C. teleta runt </it>ortholog is only detected in the brain. Later, <it>Ct-runt </it>is expressed in the ventral nerve cord, foregut and hindgut. Analysis of <it>Pax </it>genes in the <it>C. teleta </it>genome reveals the presence of a single <it>Pax3/7 </it>ortholog. <it>Ct-Pax3/7 </it>is initially detected in the mid-body prior to segmentation, but is restricted to two longitudinal bands in the ventral ectoderm. Each of the two <it>C. teleta eve </it>orthologs has a unique and complex expression pattern, although there is partial overlap in several tissues. Prior to and during segment formation, <it>Ct-eve1 </it>and <it>Ct-eve2 </it>are both expressed in the bilaterial pair of mesoteloblasts, while <it>Ct-eve1 </it>is expressed in the descendant mesodermal band cells. At later stages, <it>Ct-eve2 </it>is expressed in the central and peripheral nervous system, and in mesoderm along the dorsal midline. In late stage larvae and adults, <it>Ct-eve1 </it>and <it>Ct-eve2 </it>are expressed in the posterior growth zone.</p> <p>Conclusions</p> <p><it>C. teleta eve, Pax3/7 </it>and <it>runt </it>homologs all have distinct expression patterns and share expression domains with homologs from other bilaterians. None of the pair-rule orthologs examined in <it>C. teleta </it>exhibit segmental or pair-rule stripes of expression in the ectoderm or mesoderm, consistent with an independent origin of segmentation between annelids and arthropods.</p

A comprehensive fate map by intracellular injection of identified blastomeres in the marine polychaete Capitella teleta

<p>Abstract</p> <p>Background</p> <p>The polychaete annelid <it>Capitella teleta </it>(formerly <it>Capitella </it>sp. I) develops by spiral cleavage and has been the focus of several recent developmental studies aided by a fully sequenced genome. Fate mapping in polychaetes has lagged behind other spiralian taxa, because of technical limitations.</p> <p>Results</p> <p>To generate a modern fate map for <it>C. teleta</it>, we injected 1,1'-dioctadecyl-3,3,3'3'-tetramethylindocarbocyanine perchlorate (DiI) into individual identified blastomeres through fourth-quartet micromere formation. Confocal laser scanning microscopy at single-cell resolution was used to characterize blastomere fates during larval stages. Our results corroborate previous observations from classic studies, and show a number of similarities with other spiralian fate maps, including unique and stereotypic fates for individual blastomeres, presence of four discrete body domains arising from the A, B, C and D cell quadrants, generation of anterior ectoderm from first quartet micromeres, and contributions to trunk ectoderm and ventral nerve cord by the 2d somatoblast. Of particular interest are several instances in which the <it>C. teleta </it>fate map deviates from other spiralian fate maps. For example, we identified four to seven distinct origins of mesoderm, all ectomesodermal. In addition, the left and right mesodermal bands arise from 3d and 3c, respectively, whereas 4d generates a small number of trunk muscle cells, the primordial germ cells and the anus. We identified a complex set of blastomere contributions to the posterior gut in <it>C. teleta</it>, which establishes the most complete map of posterior gut territories to date.</p> <p>Conclusions</p> <p>Our detailed cellular descriptions reveal previously underappreciated complexity in the ontogenetic contributions to several spiralian larval tissues, including the mesoderm, nervous system and gut. The formation of the mesodermal bands by 3c and 3d is in stark contrast to other spiralians, in which 4d generates the mesodermal bands. The results of this study provide a framework for future phylogenetic comparisons and functional analyses of cell-fate specification.</p

Expression and phylogenetic analysis of the zic gene family in the evolution and development of metazoans

<p>Abstract</p> <p>Background</p> <p><it>zic </it>genes are members of the <it>gli/glis/nkl/zic </it>super-family of C2H2 zinc finger (ZF) transcription factors. Homologs of the <it>zic </it>family have been implicated in patterning neural and mesodermal tissues in bilaterians. Prior to this study, the origin of the metazoan <it>zic </it>gene family was unknown and expression of <it>zic </it>gene homologs during the development of early branching metazoans had not been investigated.</p> <p>Results</p> <p>Phylogenetic analyses of novel <it>zic </it>candidate genes identified a definitive <it>zic </it>homolog in the placozoan <it>Trichoplax adhaerens</it>, two <it>gli/glis/nkl-</it>like genes in the ctenophore <it>Mnemiopsis leidyi</it>, confirmed the presence of three <it>gli/glis/nkl</it>-like genes in Porifera, and confirmed the five previously identified <it>zic </it>genes in the cnidarian <it>Nematostella vectensis</it>. In the cnidarian <it>N. vectensis</it>, <it>zic </it>homologs are expressed in ectoderm and the gastrodermis (a bifunctional endomesoderm), in presumptive and developing tentacles, and in oral and sensory apical tuft ectoderm. The <it>Capitella teleta zic </it>homolog (<it>Ct-zic</it>) is detectable in a subset of the developing nervous system, the foregut, and the mesoderm associated with the segmentally repeated chaetae. Lastly, expression of <it>gli </it>and <it>glis </it>homologs in <it>Mnemiopsis</it>. <it>leidyi </it>is detected exclusively in neural cells in floor of the apical organ.</p> <p>Conclusions</p> <p>Based on our analyses, we propose that the <it>zic </it>gene family arose in the common ancestor of the Placozoa, Cnidaria and Bilateria from a <it>gli/glis/nkl</it>-like gene and that both ZOC and ZF-NC domains evolved prior to cnidarian-bilaterian divergence. We also conclude that <it>zic </it>expression in neural ectoderm and developing neurons is pervasive throughout the Metazoa and likely evolved from neural expression of an ancestral <it>gli/glis/nkl/zic </it>gene. <it>zic </it>expression in bilaterian mesoderm may be related to the expression in the gastrodermis of a cnidarian-bilaterian common ancestor.</p

Social network market: Storytelling on a web 2.0 original literature site

This article looks at a Chinese Web 2.0 original literature site, Qidian, in order to show the coevolution of market and non-market initiatives. The analytic framework of social network markets (Potts et al., 2008) is employed to analyse the motivations of publishing original literature works online and to understand the support mechanisms of the site, which encourage readers’ willingness to pay for user-generated content. The co-existence of socio-cultural and commercial economies and their impact on the successful business model of the site are illustrated in this case. This article extends the concept of social network markets by proposing the existence of a ripple effect of social network markets through convergence between PC and mobile internet, traditional and internet publishing, and between publishing and other cultural industries. It also examines the side effects of social network markets, and the role of market and non-market strategies in addressing the issues

The HIPASS Catalogue - II. Completeness, Reliability, and Parameter Accuracy

The HI Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21-cm emission line survey covering the whole southern sky from declination -90 to +25. The HIPASS catalogue (HICAT), containing 4315 HI-selected galaxies from the region south of declination +2, is presented in Meyer et al. (2004a, Paper I). This paper describes in detail the completeness and reliability of HICAT, which are calculated from the recovery rate of synthetic sources and follow-up observations, respectively. HICAT is found to be 99 per cent complete at a peak flux of 84 mJy and an integrated flux of 9.4 Jy km/s. The overall reliability is 95 per cent, but rises to 99 per cent for sources with peak fluxes >58 mJy or integrated flux > 8.2 Jy km/s. Expressions are derived for the uncertainties on the most important HICAT parameters: peak flux, integrated flux, velocity width, and recessional velocity. The errors on HICAT parameters are dominated by the noise in the HIPASS data, rather than by the parametrization procedure.Comment: Accepted for publication in MNRAS. 12 pages, 11 figures. Paper with higher resolution figures can be downloaded from http://hipass.aus-vo.or

Bilateral Assessment of Functional Tasks for Robot-assisted Therapy Applications

This article presents a novel evaluation system along with methods to evaluate bilateral coordination of arm function on activities of daily living tasks before and after robot-assisted therapy. An affordable bilateral assessment system (BiAS) consisting of two mini-passive measuring units modeled as three degree of freedom robots is described. The process for evaluating functional tasks using the BiAS is presented and we demonstrate its ability to measure wrist kinematic trajectories. Three metrics, phase difference, movement overlap, and task completion time, are used to evaluate the BiAS system on a bilateral symmetric (bi-drink) and a bilateral asymmetric (bi-pour) functional task. Wrist position and velocity trajectories are evaluated using these metrics to provide insight into temporal and spatial bilateral deficits after stroke. The BiAS system quantified movements of the wrists during functional tasks and detected differences in impaired and unimpaired arm movements. Case studies showed that stroke patients compared to healthy subjects move slower and are less likely to use their arm simultaneously even when the functional task requires simultaneous movement. After robot-assisted therapy, interlimb coordination spatial deficits moved toward normal coordination on functional tasks

International Coercion, Emulation and Policy Diffusion: Market-Oriented Infrastructure Reforms, 1977-1999

Why do some countries adopt market-oriented reforms such as deregulation, privatization and liberalization of competition in their infrastructure industries while others do not? Why did the pace of adoption accelerate in the 1990s? Building on neo-institutional theory in sociology, we argue that the domestic adoption of market-oriented reforms is strongly influenced by international pressures of coercion and emulation. We find robust support for these arguments with an event-history analysis of the determinants of reform in the telecommunications and electricity sectors of as many as 205 countries and territories between 1977 and 1999. Our results also suggest that the coercive effect of multilateral lending from the IMF, the World Bank or Regional Development Banks is increasing over time, a finding that is consistent with anecdotal evidence that multilateral organizations have broadened the scope of the “conditionality” terms specifying market-oriented reforms imposed on borrowing countries. We discuss the possibility that, by pressuring countries into policy reform, cross-national coercion and emulation may not produce ideal outcomes.http://deepblue.lib.umich.edu/bitstream/2027.42/40099/3/wp713.pd

REST and neural gene network Dysregulation in iPSC models of Alzheimer’s disease

The molecular basis of the earliest neuronal changes that lead to Alzheimer’s disease (AD) is unclear. Here, we analyze neural cells derived from sporadic AD (SAD), APOE4 gene-edited and control induced pluripotent stem cells (iPSCs). We observe major differences in iPSC-derived neural progenitor (NP) cells and neurons in gene networks related to neuronal differentiation, neurogenesis, and synaptic transmission. The iPSC-derived neural cells from SAD patients exhibit accelerated neural differentiation and reduced progenitor cell renewal. Moreover, a similar phenotype appears in NP cells and cerebral organoids derived from APOE4 iPSCs. Impaired function of the transcriptional repressor REST is strongly implicated in the altered transcriptome and differentiation state. SAD and APOE4 expression result in reduced REST nuclear translocation and chromatin binding, and disruption of the nuclear lamina. Thus, dysregulation of neural gene networks may set in motion the pathologic cascade that leads to AD