957 research outputs found
Factors Affecting the Microbiome of \u3ci\u3eIxodes scapularis\u3c/i\u3e and \u3ci\u3eAmblyomma americanum\u3c/i\u3e
The microbial community composition of disease vectors can impact pathogen establishment and transmission as well as on vector behavior and fitness. While data on vector microbiota are accumulating quickly, determinants of the variation in disease vector microbial communities are incompletely understood. We explored the microbiome of two human-biting tick species abundant in eastern North America (Amblyomma americanum and Ixodes scapularis) to identify the relative contribution of tick species, tick life stage, tick sex, environmental context and vertical transmission to the richness, diversity, and species composition of the tick microbiome. We sampled 89 adult and nymphal Ixodes scapularis (N = 49) and Amblyomma americanum (N = 40) from two field sites and characterized the microbiome of each individual using the v3-v4 hypervariable region of the 16S rRNA gene. We identified significant variation in microbial community composition due to tick species and life stage with lesser impact of sampling site. Compared to unfed nymphs and males, the microbiome of engorged adult female I. scapularis, as well as the egg masses they produced, were low in bacterial richness and diversity and were dominated by Rickettsia, suggesting strong vertical transmission of this genus. Likewise, microbiota of A. americanum nymphs and males were more diverse than those of adult females. Among bacteria of public health importance, we detected several different Rickettsia sequence types, several of which were distinct from known species. Borrelia was relatively common in I. scapularis but did not show the same level of sequence variation as Rickettsia. Several bacterial genera were significantly over-represented in Borrelia-infected I. scapularis, suggesting a potential interaction of facilitative relationship between these taxa; no OTUs were under-represented in Borrelia-infected ticks. The systematic sampling we conducted for this study allowed us to partition the variation in tick microbial composition as a function of tick- and environmentally-related factors. Upon more complete understanding of the forces that shape the tick microbiome it will be possible to design targeted experimental studies to test the impacts of individual taxa and suites of microbes on vector-borne pathogen transmission and on vector biology
Developing an Evidence-Based Epilepsy Risk Assessment eHealth Solution: From Concept to Market
INTRODUCTION: Sudden unexpected death in epilepsy (SUDEP) is possibly the most common cause of death as a result of complications from epilepsy. The need to educate and regularly review risk for all patients with epilepsy is paramount, but rarely delivered in actual clinical practice. Evidence suggests that education around SUDEP and modifiable risk variables translate into better self-management of epilepsy.
OBJECTIVE: We aimed to develop and implement an eHealth solution to support education and self-management of risks, in epilepsy.
METHODS: We undertook an innovation pathways approach, including problem identification, feasibility assessment, design, implementation, and marketing. People with epilepsy were provided a smartphone-based app (Epilepsy Self-Monitor, EpSMon), which translates the clinical risk assessment tool into an educational and self-monitoring platform, for the self-management of epilepsy.
RESULTS: Results include the success of the marketing campaign, and in what areas, with an estimated reach of approximately 38 million people. EpSMon has proved a success in academic and clinical circles, attracting awards and nominations for awards. The number of users of EpSMon, after 3 months, turned out to be lower than expected (N=221). A 4-month trial of the app in use in the United Kingdom, and the success of the marketing strategy, point to necessary changes to the model of delivery and marketing, summarized in this paper. These include the marketing message, user cost model, and need for the availability of an Android version.
CONCLUSIONS: EpSMon has proven a success in respect to its reception by academics, clinicians, stakeholder groups, and the patients who use it. There is work needed to promote the model and increase its acceptability/attractiveness, including broadening the marketing message, increasing its availability, and reducing its cost. Future development and promotion of the tool will hopefully inform iterative design of its core features for a receptive audience and lead to increased uptake as it is launched worldwide in 2016
On possibility of measurement of the electron beam energy using absorption of radiation by electrons in a magnetic field
The possibility of the precise measurement of the electron beam energy using
absorption of radiation by electrons in a static and homogeneous magnetic field
in a range up to a few hundred GeV energies, was considered in [1]. With the
purpose of experimental checking of this method in a range of several tens MeV
energies, the possibility of measurement of absolute energy of the electron
beam energy with relative accuracy up to 10^{-4} is examined in details.Comment: 14 pages, 10 figure
Keeping patients with epilepsy safe: a surmountable challenge?
This quality improvement project was inspired as an answer to a problem that intellectual disability teams have been struggling to manage whilst caring for people with epilepsy (PWE). The issue was that despite guidance to discuss the possibility of sudden unexpected death in epilepsy (SUDEP) be discussed with a newly diagnosed PWE this is rarely done. Additionally when, how, and what to discuss about SUDEP and reduce its risk is arbitrary, non-person centred, and with no structured evidence. Prior to initiating changes a discussion of SUDEP was recorded in just 10% of PWE. We introduced a check-list to help identify risk factors for SUDEP. We then modified the check-list, and then used it via telehealth, a way of contacting patients and their carers over the phone using the check-list approach. Following interventions, discussions of SUDEP are now recorded in 80% of PWE. Feedback from patients, carers and primary and secondary care professionals has been positive. We are now developing an app so that patients and carers can monitor their own risk factors, thus empowering them and increasing their knowledge and awareness of SUDEP
Sudden unexpected death in epilepsy: measures to reduce risk
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UK framework for basic epilepsy training and oromucosal midazolam administration.
BACKGROUND: UK wide Oromucosal Midazolam is used as an emergency treatment in community for seizures administered by family/carers with the right training. The Joint Epilepsy Council (JEC) UK which produced the training guidelines disbanded in 2016. PURPOSE: Provide standards for basic epilepsy education and rescue medication (Midazolam) administration. METHODS: The Epilepsy Nurses Association (ESNA), The International League against Epilepsy, British Chapter (ILAE) and the Royal college of Psychiatrists (RCPsych), used the Delphi process to update guidelines for the administration of oromucosal midazolam including developing a voluntary on-line test for carers. During 2017-2019 a facilitator worked with two ESNA committees to update the existing guidance and another to develop a question-bank. Both committee outputs were circulated to the ESNA membership, then ILAE and RCPsych for review. Patient-facing organizations and charities' opinions were solicited. All feedback was assimilated. A private provider was contracted to deliver the test. RESULTS: A consensus process involving two task and finish groups of 19 people each compared, reflected, debated, and engaged with stakeholders across three stages. The updated ratified guidelines were circulated nationally. The Delphi process highlighted many regions and individuals had local assessment tools and procedures in place, while others (around 50%) had no assessment provision. 278 carers with a 95% pass-rate and 100% positive feedback have undertaken the online test (10/2020). CONCLUSION: The UK-wide care provision gap in basic epilepsy-training and safe rescue medication administration is now addressed. A two-yearly update to the guidelines and test is planned
Convergent evolution of toxin resistance in animals
Convergence is the phenomenon whereby similar phenotypes evolve independently in different lineages. One example is resistance to toxins in animals. Toxins have evolved many times throughout the tree of life. They disrupt molecular and physiological pathways in target species, thereby incapacitating prey or deterring a predator. In response, molecular resistance has evolved in many species exposed to toxins to counteract their harmful effects. Here, we review current knowledge on the convergence of toxin resistance using examples from a wide range of toxin families. We explore the evolutionary processes and molecular adaptations driving toxin resistance. However, resistance adaptations may carry a fitness cost if they disrupt the normal physiology of the resistant animal. Therefore, there is a trade‐off between maintaining a functional molecular target and reducing toxin susceptibility. There are relatively few solutions that satisfy this trade‐off. As a result, we see a small set of molecular adaptations appearing repeatedly in diverse animal lineages, a phenomenon that is consistent with models of deterministic evolution. Convergence may also explain what has been called ‘autoresistance’. This is often thought to have evolved for self‐protection, but we argue instead that it may be a consequence of poisonous animals feeding on toxic prey. Toxin resistance provides a unique and compelling model system for studying the interplay between trophic interactions, selection pressures and the molecular mechanisms underlying evolutionary novelties
The Next Frontier: Making Research More Reproducible
Science and engineering rest on the concept of reproducibility. An important question for any study is: are the results reproducible? Can the results be recreated independently by other researchers or professionals? Research results need to be independently reproduced and validated before they are accepted as fact or theory. Across numerous fields like psychology, computer systems, and water resources there are problems to reproduce research results (Aarts et al. 2015; Collberg et al. 2014; Hutton et al. 2016; Stagge et al. 2019; Stodden et al. 2018). This editorial examines the challenges to reproduce research results and suggests community practices to overcome these challenges. Coordination is needed among the authors, journals, funders and institutions that produce, publish, and report research. Making research more reproducible will allow researchers, professionals, and students to more quickly understand and apply research in follow-on efforts and advance the field
Improving nocturnal event monitoring in people with intellectual disability in community using an artificial intelligence camera
There is higher prevalence of epilepsy and SUDEP in people with intellectual disability (PwID) compared to general population. Accurate seizure recording particularly at night can be challenging in PwID. Neuro Event Labs seizure monitoring (Nelli) uses high-quality video based artificial intelligence to detect and record possible nocturnal seizures. This study looks to evaluate the clinical utility and acceptability of Nelli in PwID and epilepsy. Family/carers of PwID and drug resistant epilepsy with suspicions of nocturnal seizures who had not tolerated routine or ambulatory EEGs were invited to evaluate Nelli. Relevant demographics and clinical characteristics were collected. Nelli's impact, it's facilitators, barriers and feedback quality was captured from patient and professional stakeholders. Quantitative and thematic analysis was undertaken. Fifteen PwID and epilepsy and four health professionals were involved. Nelli recorded 707 possible seizure events across the study cohort of which 247 were not heard or recognised by carers. Carers recorded 165 episodes of 'restless' or "seizure behaviour" which the Nelli did not deem to be seizures. There was 93% acceptability. Thematic analysis revealed three broad themes of device acceptability, result implementation and possible seizure recognition ability. Nelli allowed for improved communication and care planning in a hitherto difficult to investigate population
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