Parenting strategies and child behavior in children with Down syndrome

2014 Summer.Includes bibliographical references.This study examined parent-child interactions in Down syndrome in the context of a collaborative puzzle task. Variables of interest included the parent dimensions of teaching and directives, and the child behaviors of compliance, persistence, and social engagement during a five-minute interaction. Based on previous research in the field of parenting and developmental disabilities, it was hypothesized that parents of children with Down syndrome would exhibit significantly more directive behavior than parents of typically developing children, and that the use of directives would be associated with higher levels of compliance and task persistence in children with Down syndrome. It was also hypothesized that children with Down syndrome would engage in higher levels of off-task behavior, such as social engagement with a parent, based on evidence of the over-use of social behaviors during challenging tasks in this population. Children with Down syndrome (N = 20) and mental-age matched typically developing children (N = 13), and their parents, were recorded during a five-minute problem-solving task. Parent and child behaviors were captured utilizing a modified version of Lunkenheimer's (2009) Dyadic Interaction Coding System. Results indicated that parents of children with Down syndrome demonstrated both significantly higher levels of directive behaviors and teaching behaviors in comparison to parents with typically developing children. Contrary to previous research, children with Down syndrome in this study were found to be significantly more compliant than their typically developing peers, and no significant differences emerged between the groups in terms of off-task, socially-related behavior. Additionally, this study examined the reciprocal nature of parent-child interactions using state lag sequential analyses. Results from these analyses demonstrated a higher probability of directive parenting behavior following child social engagement in the Down syndrome group as compared to the typically-developing group. Conversely, the lag sequential analyses demonstrated a higher probability of teaching parent behavior following social engagement in the typically-developing group as compared to the Down syndrome group. The likelihood for both teaching and directive parenting behavior following child noncompliance was also higher in the Down syndrome group as compared to the typically-developing group. The findings from this study demonstrate consistency with previous work that parents of children with Down syndrome are more directive than parents of typically developing children, and highlights the differing patterns of parenting behavior in both typically and atypically developing populations. The use of analyses to examine dyadic contingencies also provides new information regarding the strategies that parents employ with their children to promote on-task behavior, specifically in children with an intellectual disability. Lastly, this study contributes to the body of research on the behavioral phenotype of children with Down syndrome

The Effects of Modulating Endothelial Nitric Oxide Synthase (eNOS) Activity and Coupling in Coronary, Hindlimb, Renal, and Mesenteric Vascular Inflammation Models

Ischemia/reperfusion (I/R) injury is initiated in part by vascular endothelial dysfunction, which is characterized by reduced endothelial-derived nitric oxide (NO) and/or increased oxidative stress, followed by inflammation. When the tetrahydrobiopterin (BH4) to dihydrobiopterin (BH2, oxidized form of BH4) ratio is reduced, eNOS can become uncoupled shifting production of NO to superoxide (SO). Protein kinase C epsilon activator (PKCε+) enhances eNOS activity while PKCε inhibitor (PKCε-) reduces eNOS activity. The effects of PKCε+ or PKCε- combined with BH4 or BH2 were studied in rat myocardial and hindlimb I/R, rat renal lithotripsy, and rat mesenteric inflammation models. Promoting eNOS coupling using PKCε+ with BH4 or inhibiting uncoupled eNOS activity using PKCε- significantly increased blood NO and decreased blood H2O2 levels in reperfused femoral and renal veins, reduced BH2-induced leukocyte-endothelial interactions in mesenteric postcapillary venules, and improved post-reperfused cardiac function associated with reduced leukocyte heart tissue infiltration when compared to controls. In contrast, PKCε+ with BH2 had opposite effects. These results suggest that enhancing coupled eNOS or inhibiting uncoupled eNOS activities can attenuate the I/R-induced vascular endothelial dysfunction, inflammation, and organ damage. This study was supported by NHLBI Grant 2R15HL-76235-02 and the CCDA at PCOM

Differential Expression of Genes Related to Innate Immune Responses in Ex Vivo Spinal Cord and Cerebellar Slice Cultures Infected With West Nile Virus

West Nile virus (WNV) infection results in a spectrum of neurological symptoms, ranging from a benign fever to severe WNV neuroinvasive disease with high mortality. Many who recover from WNV neuroinvasive infection present with long-term deficits, including weakness, fatigue, and cognitive problems. While neurons are a main target of WNV, other cell types, especially astrocytes, play an important role in promoting WNV-mediated central nervous system (CNS) damage. Conversely, it has been shown that cultured primary astrocytes secrete high levels of interferons (IFNs) immediately after WNV exposure to protect neighboring astrocytes, as well as neurons. However, how intrinsic responses to WNV in specific cell types and different regions of the brain modify immune protection is not fully understood. Here, we used a mouse ex vivo spinal cord slice culture (SCSC) and cerebellar slice culture (CSC) models to determine the innate immune responses specific to the CNS during WNV infection. Slices were prepared from the spinal cord and cerebellar tissue of 7⁻9-day-old mouse pups. Four-day-old SCSC or CSC were infected with 1 × 10³ or 1 × 10⁵ PFU of WNV, respectively. After 12 h exposure to WNV and 3 days post-infection in normal growth media, the pooled slice cultures were processed for total RNA extraction and for gene expression patterns using mouse Affymetrix arrays. The expression patterns of a number of genes were significantly altered between the mock- and WNV-treated groups, both in the CSCs and SCSCs. However, distinct differences were observed when CSC data were compared with SCSC. CSCs showed robust induction of interferons (IFNs), IFN-stimulated genes (ISGs), and regulatory factors. Some of the antiviral genes related to IFN were upregulated more than 25-fold in CSCs as compared to mock or SCSC. Though SCSCs had twice the number of dysregulated genes, as compared CSCs, they exhibited a much subdued IFN response. In addition, SCSCs showed astrogliosis and upregulation of astrocytic marker genes. In sum, our results suggest that early anti-inflammatory response to WNV infection in CSCs may be due to large population of distinct astrocytic cell types, and lack of those specialized astrocytes in SCSC may make spinal cord cells more susceptible to WNV damage. Further, the understanding of early intrinsic immune response events in WNV-infected ex vivo culture models could help develop potential therapies against WNV

Engineered Orthogonal Quorum Sensing Systems for Synthetic Gene Regulation in Escherichia coli

Gene regulators that are controlled by membrane-permeable compounds called homoserine lactones (HSLs) have become popular tools for building synthetic gene networks that coordinate behaviors across populations of engineered bacteria. Synthetic HSL-signaling systems are derived from natural DNA and protein elements from microbial quorum signaling pathways. Crosstalk, where a single HSL can activate multiple regulators, can lead to faults in networks composed of parallel signaling pathways. Here, we report an investigation of quorum sensing components to identify synthetic pathways that exhibit little to no crosstalk in liquid and solid cultures. In previous work, we characterized the response of a single regulator (LuxR) to 10 distinct HSL-synthase enzymes. Our current study determined the responses of five different regulators (LuxR, LasR, TraR, BjaR, and AubR) to the same set of synthases. We identified two sets of orthogonal synthase-regulator pairs (BjaI/BjaR + EsaI/TraR and LasI/LasR + EsaI/TraR) that show little to no crosstalk when they are expressed in Escherichia coli BL21. These results expand the toolbox of characterized components for engineering microbial communities

Congenital Zika Virus Infection in Immunocompetent Mice Causes Postnatal Growth Impediment and Neurobehavioral Deficits

A small percentage of babies born to Zika virus (ZIKV)-infected mothers manifest severe defects at birth, including microcephaly. Among those who appeared healthy at birth, there are increasing reports of postnatal growth or developmental defects. However, the impact of congenital ZIKV infection in postnatal development is poorly understood. Here, we report that a mild congenital ZIKV-infection in pups born to immunocompetent pregnant mice did not display apparent defects at birth, but manifested postnatal growth impediments and neurobehavioral deficits, which include reduced locomotor and cognitive deficits that persisted into adulthood. We found that the brains of these pups were smaller, had a thinner cortical layer 1, displayed increased astrogliosis, decreased expression of microcephaly- and neuron development- related genes, and increased pathology as compared to mock-infected controls. In summary, our results showed that even a mild congenital ZIKV infection in immunocompetent mice could lead to postnatal deficits, providing definitive experimental evidence for a necessity to closely monitor postnatal growth and development of presumably healthy human infants, whose mothers were exposed to ZIKV infection during pregnancy

Manual / Issue 9 / Out of Line

Manual, a journal about art and its making. Out of Line. The nineth issue. This issue of *Manual*—themed Out of Line—is a collection about the way that lines disrupt, point outward. In poetry, the attention to detail one takes in crafting a line is all about making the line disappear, making something it holds to take front stage. . . . The space between the lines creating the image . . . the space around that argues for the importance of all that the lines hold. Manual 9 (Out of Line) complemented Lines of Thought: Drawing from Michelangelo to Now, presented in collaboration with the British Museum, on view at the RISD Museum October 6, 2017 to January 7, 2018. Softcover, 76 pages. Published 2017 by the RISD Museum. Manual 9 (Out of Line) contributors include Fida Adely, Reginald Dwayne Betts, Stefano Bloch, Mimi Cabell, Namita Vijay Dharia, Douglas W. Doe, Jared A. Goldstein, Lucinda Hitchcock, Jan Howard, Kate Irvin, Douglas Kearney, Amber Lopez, Jeffrey Moser, Sheida Soleimani, and Craig Taylor.https://digitalcommons.risd.edu/risdmuseum_journals/1035/thumbnail.jp

Representativeness of the European social partner organisations : human health sector

Aquesta publicació s'elabora a partir de les contribucions de cadascú dels membres nacionals que integren la Network of Eufound Correspondent. Pel cas d'Espanya la contribució ha estat realitzada per l'Oscar MolinaThis study provides information allowing for an assessment of the representativeness of the actors involved in the European sectoral social dialogue committee for the human health sector. Their relative representativeness legitimises their right to be consulted, their role and effective participation in the European sectoral social dialogue, and their capacity to negotiate agreements. The aim of Eurofound's studies on representativeness is to identify the relevant national and European social partner organisations in the field of industrial relations in the EU Member States. This study identified the European Federation of Public Service Unions (EPSU) - representing employees - and the European Hospital and Healthcare Employers' Association (HOSPEEM) - representing employers - as the most representative European-level social partner organisations in the human health sector. The member organisations of the European Confederation of Independent Trade Unions (CESI) and UNI Europa also organise employees in the sector in several Member States

Diagnosis of sheep fasciolosis caused by Fasciola hepatica using cathepsin L enzyme-linked immunosorbent assays (ELISA)

Publication history: Accepted - 3 July 2021; Published online - 6 July 2021.Fasciolosis, a global parasitic disease of agricultural livestock, is caused by the liver fluke Fasciola hepatica. Management and strategic control of fasciolosis on farms depends on early assessment of the extent of disease so that control measures can be implemented quickly. Traditionally, this has relied on the detection of eggs in the faeces of animals, a laborious method that lacks sensitivity, especially for sub-clinical infections, and identifies chronic infections only. Enzyme linked immunosorbent assays (ELISA) offer a quicker and more sensitive serological means of diagnosis that could detect early acute infection before significant liver damage occurs. The performance of three functionally-active recombinant forms of the major F. hepatica secreted cathepsins L, rFhCL1, rFhCL2, rFhCL3, and a cathepsin B, rFhCB3, were evaluated as antigens in an indirect ELISA to serologically diagnose liver fluke infection in experimentally and naturally infected sheep. rFhCL1 and rFhCL3 were the most effective of the four antigens detecting fasciolosis in sheep as early as three weeks after experimental infection, at least five weeks earlier than both coproantigen and faecal egg tests. In addition, the rFhCL1 and rFhCL3 ELISAs had a very low detection limit for liver fluke in lambs exposed to natural infection on pastures and thus could play a major role in the surveillance of farms and a ‘test and treat’ approach to disease management. Finally, antibodies to all three cathepsin L proteases remain high throughout chronic infection but decline rapidly after drug treatment with the flukicide, triclabendazole, implying that the test may be adapted to trace the effectiveness of drug treatment.This work was supported by a European Research Council Advanced Grant (HELIVAC, 322725) and Science Foundation Ireland (SFI) Professorship grant (17/RP/5368) awarded to J.P. Dalton

Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial

Background Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy