12 research outputs found

    A mobile DNA laboratory for forensic science adapted to coronavirusSARS-CoV-2 diagnosis

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    International audienceThe Forensic Science Institute of the French "Gendarmerie Nationale" (IRCGNℱ) developed in 2015 an ISO 17025 certified mobile DNA laboratory for genetic analyses. This Mobil'DNA laboratory is a fully autonomous and adaptable mobile laboratory to perform genetic analyses in the context of crime scenes, terrorism attacks or disasters.To support the hospital taskforce in Paris during the peak of the COVID-19 epidemic, we adapted this mobile genetic laboratory to perform high-throughput molecular screening for coronavirus SARS-CoV-2 by real-time PCR. We describe the adaptation of this Mobil'DNA lab to assist in Coronavirus SARS-CoV-2 diagnosis

    Successful aging: The role of cognitive gerontology

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    International audienceThis commentary explores the relationships between the construct of successful aging and the experimental psychology of human aging—cognitive gerontology. What can or should cognitive gerontology contribute to understanding, defining, and assessing successful aging? Standards for successful aging reflect value judgments that are culturally and historically situated. Fundamentally, they address social policy; they are prescriptive. If individuals or groups are deemed to be aging successfully, then their characteristics or situations can be emulated. If an individual or a group is deemed to be aging unsuccessfully, then intervention should be considered. Although science is never culture-free or ahistorical, cognitive gerontology is primarily descriptive of age-related change. It is not prescriptive. It is argue that cognitive gerontology has little to contribute to setting standards for successful aging. If, however, better cognitive function is taken as a marker of more successful aging—something not universally accepted—then cognitive gerontology can play an important assessment role. It has a great deal to contribute in determining whether an individual or a group evidences better cognitive function than another. More importantly, cognitive gerontology can provide tools to evaluate the effects of interventions. It can provide targeted measures of perception, attention, memory, executive function, and other facets of cognition that are more sensitive to change than most clinical measures. From a deep understanding of factors affecting cognitive function, cognitive gerontology can also suggest possible interventions. A brief narrative review of interventions that have and have not led to improved cognitive function in older adults. Finally, the enormous range is addressed in the estimates of the proportion of the population that meets a standard for aging successfully, from less than 10% to more than 90%. For research purposes, it would be better to replace absolute cutoffs with correlational approaches (e.g., Freund & Baltes, 1998, Psychology and Aging, 13, 531–543). For policy purposes, cutoffs are necessary, but we propose that assessments of successful aging be based not on absolute cutoffs but on population proportions. An example of one possible standard is this: Those more than 1 standard deviation above the mean are aging successfully; those more than 1 standard deviation below the mean are aging unsuccessfully; those in between are aging usually. Adoption of such a standard may reduce the wide discrepancies in the incidence of successful aging reported in the literature

    Versatile and flexible microfluidic qPCR test for high-throughput SARS-CoV-2 and cellular response detection in nasopharyngeal swab samples

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    The emergence and quick spread of SARS-CoV-2 has pointed at a low capacity response for testing large populations in many countries, in line of material, technical and staff limitations. The traditional RT-qPCR diagnostic test remains the reference method and is by far the most widely used test. These assays are limited to a couple of probe sets, require large sample PCR reaction volumes, along with an expensive and time-consuming RNA extraction steps. Here we describe a quantitative nanofluidic assay that overcomes some of these shortcomings, based on the Biomark instrument from Fluidigm. This system offers the possibility of performing 4608 qPCR end-points in a single run, equivalent to 192 clinical samples combined with 12 pairs of primers/probe sets in duplicate, thus allowing the monitoring in addition to SARS-CoV-2 probes of other pathogens and/or host cellular responses (virus receptors, response markers, microRNAs). Its 10 nL range volume is compatible with sensitive and reproducible reactions that can be easily and cost-effectively adapted to various RT-qPCR configurations and sets of primers/probe. Finally, we also evaluated the use of inactivating lysis buffers composed of various detergents in the presence or absence of proteinase K to assess the compatibility of these buffers with a direct reverse transcription enzymatic step and we propose several procedures, bypassing the need for RNA purification. We advocate that the combined utilization of an optimized processing buffer and a high-throughput real-time PCR device would contribute to improve the turn-around-time to deliver the test results to patients and increase the SARS-CoV-2 testing capacities

    Versatile and flexible microfluidic qPCR test for high-throughput SARS-CoV-2 and cellular response detection in nasopharyngeal swab samples

    No full text
    International audienceThe emergence and quick spread of SARS-CoV-2 has pointed at a low capacity response for testing large populations in many countries, in line of material, technical and staff limitations. The traditional RT-qPCR diagnostic test remains the reference method and is by far the most widely used test. These assays are limited to a few probe sets, require large sample PCR reaction vo

    Manuel des bonnes pratiques dans les sites ornés en milieu souterrain

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    International audienceVĂ©ritable carnet de bord, le "Manuel des bonnes pratiques dans les sites ornĂ©s en milieu souterrain", s’adresse aussi bien au spĂ©lĂ©ologue qu’au chercheur, au conservateur du site, au propriĂ©taire... ÉlaborĂ© par des professionnels et des scientifiques aguerris, c’est un document incontournable auquel toute personne intervenant en milieu souterrain pourra se rĂ©fĂ©rer pour garantir la prĂ©servation du site et sa propre sĂ©curitĂ©. Chacun aura Ă  l’esprit le cadre lĂ©gislatif dans lequel il agit grĂące aux articles de loi dont le texte prĂ©cise les rĂ©fĂ©rences.Le Manuel des bonnes pratiques dans les sites ornĂ©s en milieu souterrain est conçu pour pouvoir ĂȘtre emportĂ© sur le terrain. IllustrĂ© de dessins humoristiques rĂ©alisĂ©s par l’artiste et prĂ©historien Gilles Tosello, il dĂ©crit en cinq chapitres les bonnes attitudes Ă  adopter dans une cavitĂ© dĂšs le moment de sa dĂ©couverte : il Ă©numĂšre de façon claire et prĂ©cise les prĂ©cautions Ă  prendre pour protĂ©ger le site et son environnement ; il explique comment prĂ©venir les dangers du milieu souterrain ; il rappelle la dĂ©ontologie de la recherche en grotte et la nĂ©cessitĂ© de partager documentation et archives pour ne perdre aucun Ă©vĂ©nement survenu dans ces lieux fragiles et difficiles d’accĂšs.ÉditĂ© par le ministĂšre de la Culture, le Manuel des bonnes pratiques dans les sites ornĂ©s en milieu souterrain est le fruit de plusieurs annĂ©es de collaboration entre le Centre national de prĂ©histoire et le Laboratoire de recherche des monuments historiques, avec la participation des directions rĂ©gionales des affaires culturelles, du CNRS, de l’universitĂ© et de la FĂ©dĂ©ration française de spĂ©lĂ©ologie

    Manuel des bonnes pratiques dans les sites ornés en milieu souterrain

    No full text
    International audienceVĂ©ritable carnet de bord, le "Manuel des bonnes pratiques dans les sites ornĂ©s en milieu souterrain", s’adresse aussi bien au spĂ©lĂ©ologue qu’au chercheur, au conservateur du site, au propriĂ©taire... ÉlaborĂ© par des professionnels et des scientifiques aguerris, c’est un document incontournable auquel toute personne intervenant en milieu souterrain pourra se rĂ©fĂ©rer pour garantir la prĂ©servation du site et sa propre sĂ©curitĂ©. Chacun aura Ă  l’esprit le cadre lĂ©gislatif dans lequel il agit grĂące aux articles de loi dont le texte prĂ©cise les rĂ©fĂ©rences.Le Manuel des bonnes pratiques dans les sites ornĂ©s en milieu souterrain est conçu pour pouvoir ĂȘtre emportĂ© sur le terrain. IllustrĂ© de dessins humoristiques rĂ©alisĂ©s par l’artiste et prĂ©historien Gilles Tosello, il dĂ©crit en cinq chapitres les bonnes attitudes Ă  adopter dans une cavitĂ© dĂšs le moment de sa dĂ©couverte : il Ă©numĂšre de façon claire et prĂ©cise les prĂ©cautions Ă  prendre pour protĂ©ger le site et son environnement ; il explique comment prĂ©venir les dangers du milieu souterrain ; il rappelle la dĂ©ontologie de la recherche en grotte et la nĂ©cessitĂ© de partager documentation et archives pour ne perdre aucun Ă©vĂ©nement survenu dans ces lieux fragiles et difficiles d’accĂšs.ÉditĂ© par le ministĂšre de la Culture, le Manuel des bonnes pratiques dans les sites ornĂ©s en milieu souterrain est le fruit de plusieurs annĂ©es de collaboration entre le Centre national de prĂ©histoire et le Laboratoire de recherche des monuments historiques, avec la participation des directions rĂ©gionales des affaires culturelles, du CNRS, de l’universitĂ© et de la FĂ©dĂ©ration française de spĂ©lĂ©ologie
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