741 research outputs found

    The Effect of Single Women and the Early Modern Economy

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    Historians have shown that women are generally more accepted as workers within thriving economic environments. This is particularly true of eighteenth-century Europe, a time of economic transition, expansion and social flux. Historians have indicated a rise of never-married women in eighteenth-century towns and cities, but our knowledge of women\u27s specific roles and contributions during this time of economic expansion remains slim. My research examined and compared tax records from the parish of St. Philibert in Dijon, France between 1730 and 1750. An examination of the tax records allows historians one indication of the overall economic contribution of individual householders within specific neighborhoods. By comparing the sheer numbers of single and widowed women, and their professions, tax assessments, and living arrangements, historians can suggest a pattern of women\u27s economic involvement over time. This research serves not only as a way to verify and delineate the suggestions of other historians about the potential roles of women in the eighteenth-century urban economies, but also provides an opportunity to discover what life was like for the single, never-married, and widowed women of early modern Dijon

    Sleep in Down Syndrome

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    Sleep disorders are common, often overlooked problem in Down syndrome, particularly during childhood. Comorbidities such as congenital heart disease often present early and management of these needs to take priority. However, this can result in the lack of early development of good sleep habits and may also lead to the perception that sleep issues are an expected problem in children with Down syndrome, which do not require intervention. Studies have shown that sleep problems continue to be under-reported by parents of children with Down syndrome, even though conditions such as obstructive sleep apnoea are up to six times more common in this population. Therefore an understanding of the nature of sleep problems in Down syndrome is important for anyone working with this group. In this chapter we provide an overview of this topic, highlighting the key sleep issues encountered by children with Down syndrome, as well as providing a general approach to evaluation and management

    Shedding of host autophagic proteins from the parasitophorous vacuolar membrane of Plasmodium berghei

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    The hepatic stage of the malaria parasite Plasmodium is accompanied by an autophagy-mediated host response directly targeting the parasitophorous vacuolar membrane (PVM) harbouring the parasite. Removal of the PVM-associated autophagic proteins such as ubiquitin, p62, and LC3 correlates with parasite survival. Yet, it is unclear how Plasmodium avoids the deleterious effects of selective autophagy. Here we show that parasites trap host autophagic factors in the tubovesicular network (TVN), an expansion of the PVM into the host cytoplasm. In proliferating parasites, PVM-associated LC3 becomes immediately redirected into the TVN, where it accumulates distally from the parasite's replicative centre. Finally, the host factors are shed as vesicles into the host cytoplasm. This strategy may enable the parasite to balance the benefits of the enhanced host catabolic activity with the risk of being eliminated by the cell's cytosolic immune defence

    An Overview of the Adaptive Behaviour Profile in Young Children with Angelman Syndrome: Insights from the Global Angelman Syndrome Registry

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    Objectives: Angelman syndrome (AS) is a rare genetic disorder that affects the expression of the UBE3A gene within the central nervous system that profoundly impacts neurodevelopment. Individuals with AS experience significant challenges across multiple adaptive behaviour domains including communication, motor skills, and the ability to independently perform daily functions such as feeding, and toileting. Furthermore, persons with AS can demonstrate specific behaviours that limit their ability to participate within their social environment that vary with age. The aim of this paper is to explore the adaptive behaviour profile through parent report from the Global Angelman Syndrome Registry. Methods: Specific parent report data from the Global Angelman Syndrome Registry were analysed to explore the adaptive profile of 204 young children, under the age of 6 years old, with formal diagnoses of AS. Analysis of data focused on communication skills, gross and fine motor skills, daily self-care skills (feeding, toileting, and dressing), and behavioural characteristics. Several relationships were explored: (a) the age at which certain skills were first performed based on genotype; (b) abilities in motor and adaptive behaviours, according to age and genotype, and (c) the frequency at which children performed specific communication skills and the presence and frequency of challenging behaviours, across age and genotype. Results: We visually present the ages at which frequent speech, walking, and independent dressing and toileting were first mastered by children. Additionally, we provide in-depth descriptives of expressive and receptive communication skills (including the use of alternative communication forms), fine and gross motor skills, eating, dressing, toileting, anxiety, aggression, and other behavioural characteristics. Conclusions: This cross-sectional profile of adaptive skills in 204 young children with AS showcases that although many communication, motor and adaptive skills were determined by age, children with a non-deletion aetiology exhibited advantages in communication skills, which may have impacted upon subsequent adaptive skills. The use of parent report in the present study provides valuable insight into the adaptive behaviour profile of young children with AS

    Exploring the association between perceived excessive daytime sleepiness in children and academic outcomes

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    Excessive daytime sleepiness (EDS) in children has been associated with a number of problems. In contrast to adults who experience EDS and who may fall asleep or doze when in a monotonous or boring situation, children with EDS may present as hyperactive or poorly behaved. This community-based study aims to identify the prevalence of EDS in children from three perspectives: parent report, self-report, and teacher report. The study also explores the association between EDS and academic outcomes in children. The participants were 365 students (161 males) aged 4-12 years, their parents, and their teachers at a regional school. Academic outcomes were based on each student's school grades at the conclusion of the semester in which the community-based survey was administered. Using a cutoff score of 15 or greater on the PDSS, 113 (31%) students were identified by at least one respondent as displaying or experiencing EDS. EDS as observed by teachers using the PDSS was found to be associated with the student's academic outcomes, higher sleepiness scores being associated with poorer academic outcomes. Our findings suggest that the prevalence of EDS in a community setting may be higher than previously identified

    Cell cycle-dependent phosphorylation of Theileria annulata schizont surface proteins

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    The invasion of Theileria sporozoites into bovine leukocytes is rapidly followed by the destruction of the surrounding host cell membrane, allowing the parasite to establish its niche within the host cell cytoplasm. Theileria infection induces host cell transformation, characterised by increased host cell proliferation and invasiveness, and the activation of anti-apoptotic genes. This process is strictly dependent on the presence of a viable parasite. Several host cell kinases, including PI3-K, JNK, CK2 and Src-family kinases, are constitutively activated in Theileria-infected cells and contribute to the transformed phenotype. Although a number of host cell molecules, including IkB kinase and polo-like kinase 1 (Plk1), are recruited to the schizont surface, very little is known about the schizont molecules involved in host-parasite interactions. In this study we used immunofluorescence to detect phosphorylated threonine (p-Thr), serine (p-Ser) and threonine-proline (p-Thr-Pro) epitopes on the schizont during host cell cycle progression, revealing extensive schizont phosphorylation during host cell interphase. Furthermore, we established a quick protocol to isolate schizonts from infected macrophages following synchronisation in S-phase or mitosis, and used mass spectrometry to detect phosphorylated schizont proteins. In total, 65 phosphorylated Theileria proteins were detected, 15 of which are potentially secreted or expressed on the surface of the schizont and thus may be targets for host cell kinases. In particular, we describe the cell cycle-dependent phosphorylation of two T. annulata surface proteins, TaSP and p104, both of which are highly phosphorylated during host cell S-phase. TaSP and p104 are involved in mediating interactions between the parasite and the host cell cytoskeleton, which is crucial for the persistence of the parasite within the dividing host cell and the maintenance of the transformed state

    Die Auseinandersetzung mit Verlusterlebnissen im Alter als Bildungsprozess?

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    In der vorliegenden Diplomarbeit wird die innerpsychische Auseinandersetzung mit Verlusterlebnissen im Alter thematisiert und dabei der Frage nachgegangen, ob deren Bewältigungsversuche einen psychoanalytisch orientierten Bildungsprozess beschreiben. Die Einzelfallstudie, in deren Mittelpunkt eine 95 Jahre alte Pflegeheimbewohnerin steht, entstand im Rahmen des an der Universität Wien durchgeführten interdisziplinären Forschungsprojektes „Lebensqualität im Pflegeheim. Eine empirische Untersuchung zum Lebensalltag und zur Lebenssituation von Menschen im Pflegeheim.“ Als Methode kam die psychoanalytisch orientierte Einzelbeobachtung nach dem Tavistock-Konzept zum Einsatz. Unter Zugrundelegung des gewonnenen Beobachtungsmaterials wurden Bewältigungsversuche von Verlusterfahrungen unter den Aspekten Entwicklung, Integration und Integrität mit Blick auf einen psychoanalytisch orientierten Bildungsprozess untersucht. Dies erfolgte unter Einbeziehung Erik Eriksons (1988) psychosozialem Entwicklungsmodell und psychoanalytischer Konzepte und Theorien, im Besonderen Melanie Kleins Ausführungen zur paranoid-schizoiden bzw. depressiven Position und Wilfred Bions Container-Contained-Konzept

    Pre-gelation staining expansion microscopy (PS-ExM) for visualisation of the Plasmodium liver stage.

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    Fluorescence and light microscopy are important tools in the history of natural science. However, the resolution of microscopes is limited by the diffraction of light. One possible method to circumvent this physical restriction is the recently developed expansion microscopy (ExM). However, the original ultrastructure ExM (U-ExM) protocol is very time-consuming, and some epitopes are lost during the process. In this study, we developed a shortened pre-gelation staining ExM (PS-ExM) protocol and tested it to investigate the Plasmodium liver stage. The protocol presented in this study allows expanding pre-stained samples, which results in shorter incubation times, better preservation of some epitopes, and the advantage that non-expanded controls can be performed alongside using the same staining protocol. The protocol applicability was accessed throughout the Plasmodium liver stage, showing isotropic five-fold expansion. Furthermore, we used PS-ExM to visualise parasite mitochondria as well as the association of lysosomes to the parasitophorous vacuole membrane (PVM) as an example of visualising host-pathogen interaction. We are convinced that this new tool will be helpful for a deeper understanding of the biology of the Plasmodium liver stage

    Machine learning for predicting Plasmodium liver stage development in vitro using microscopy imaging.

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    Malaria, a significant global health challenge, is caused by Plasmodium parasites. The Plasmodium liver stage plays a pivotal role in the establishment of the infection. This study focuses on the liver stage development of the model organism Plasmodium berghei, employing fluorescent microscopy imaging and convolutional neural networks (CNNs) for analysis. Convolutional neural networks have been recently proposed as a viable option for tasks such as malaria detection, prediction of host-pathogen interactions, or drug discovery. Our research aimed to predict the transition of Plasmodium-infected liver cells to the merozoite stage, a key development phase, 15 hours in advance. We collected and analyzed hourly imaging data over a span of at least 38 hours from 400 sequences, encompassing 502 parasites. Our method was compared to human annotations to validate its efficacy. Performance metrics, including the area under the receiver operating characteristic curve (AUC), sensitivity, and specificity, were evaluated on an independent test dataset. The outcomes revealed an AUC of 0.873, a sensitivity of 84.6%, and a specificity of 83.3%, underscoring the potential of our CNN-based framework to predict liver stage development of P. berghei. These findings not only demonstrate the feasibility of our methodology but also could potentially contribute to the broader understanding of parasite biology

    Minds on the margins: the formation of learner identity among artistically talented twice-exceptional students

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    Although there is a great deal of research on students with disabilities, there has been little exploration of twice exceptional students, those who have both learning disabilities and gifts and talents. There are even fewer studies of twice exceptional students who are gifted and talented in the arts. This research was based on extensive interviews with eleven twice exceptional students at a public arts-focused high school. This school employed a dual differentiation approach for these students: educational services to address their disabilities as well as school-based enrichment in their artistic talent areas. Discourse analysis and thematic coding of the interviews revealed that despite this school’s positive focus on students’ artistic talents all eleven informants considered themselves academic failures. The study revealed that these students had a strong negative identity as learners: their academic careers were characterized by being bullied, forced to repeat grades, and frequently getting in trouble at school. They expressed feelings such as loneliness, anger, and anxiety. In terms of talent or giftedness, the participants described themselves as talented but not exceptional because of their belief that everyone has a special talent. Most of the students did not describe their own disabilities in terms that are typically used in special education. Nor did they describe their talents in language that teachers would apply to them. In the academic area students described themselves as powerless and their teachers as powerful in determining success. But in their artistic work they claimed greater power than their teachers, taking an expert’s stanc
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