61 research outputs found

    Fluoromycobacteriophages for rapid, specific, and sensitive antibiotic susceptibility testing of Mycobacterium tuberculosis

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    Rapid antibiotic susceptibility testing of Mycobacterium tuberculosis is of paramount importance as multiple- and extensively- drug resistant strains of M. tuberculosis emerge and spread. We describe here a virus-based assay in which fluoromycobacteriophages are used to deliver a GFP or ZsYellow fluorescent marker gene to M. tuberculosis, which can then be monitored by fluorescent detection approaches including fluorescent microscopy and flow cytometry. Pre-clinical evaluations show that addition of either Rifampicin or Streptomycin at the time of phage addition obliterates fluorescence in susceptible cells but not in isogenic resistant bacteria enabling drug sensitivity determination in less than 24 hours. Detection requires no substrate addition, fewer than 100 cells can be identified, and resistant bacteria can be detected within mixed populations. Fluorescence withstands fixation by paraformaldehyde providing enhanced biosafety for testing MDR-TB and XDR-TB infections. © 2009 Piuri et al

    Linking Employee Stakeholders to Environmental Performance: The Role of Proactive Environmental Strategies and Shared Vision

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    Drawing on the natural-resource-based view (NRBV), we propose that employee stakeholder integration is linked to environmental performance through firms’ proactive environmental strategies, and that this link is contingent on shared vision. We tested our model with a cross-country and multi-industry sample. In support of our theory, results revealed that firms’ proactive environmental strategies translated employee stakeholder integration into environmental performance. This relationship was pronounced for high levels of shared vision. Our findings demonstrate that shared vision represents a key condition for advancing the corporate greening agenda through proactive environmental strategies. We discuss implications for the CSR and the environmental management literatures, with a particular focus on the NRBV and stakeholder integration debates

    Immunogenic Salivary Proteins of Triatoma infestans: Development of a Recombinant Antigen for the Detection of Low-Level Infestation of Triatomines

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    Chagas disease, caused by Trypanosoma cruzi, is a neglected disease with 20 million people at risk in Latin America. The main control strategies are based on insecticide spraying to eliminate the domestic vectors, the most effective of which is Triatoma infestans. This approach has been very successful in some areas. However, there is a constant risk of recrudescence in once-endemic regions resulting from the re-establishment of T. infestans and the invasion of other triatomine species. To detect low-level infestations of triatomines after insecticide spraying, we have developed a new epidemiological tool based on host responses against salivary antigens of T. infestans. We identified and synthesized a highly immunogenic salivary protein. This protein was used successfully to detect differences in the infestation level of T. infestans of households in Bolivia and the exposure to other triatomine species. The development of such an exposure marker to detect low-level infestation may also be a useful tool for other disease vectors

    Toward greener supply chains: is there a role for the new ISO 50001 approach to energy and carbon management?

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    © 2016, The Author(s). Considering the increased interest of stakeholders in climate change and a low-carbon economy, this article has investigated and identified several contributions of the ISO 50001 in support of the adoption of green supply chain management (GSCM). In this context, energy efficiency and reduced CO 2 emissions are critical. Therefore, the proposal for and the requirements of ISO 50001 can generate useful insights on how to structure green and low-carbon supply chains, hence helping to address the challenges posed by climate change

    Fragmented realities: The ‘sectarianisation’of space among Iraqi Shias in London

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    How do the spaces we inhabit shape our lived experiences? And how do those lived experiences in turn come to shape and influence our political subjectivity? Such questions are rendered all the more important in studies of migrant or diaspora populations who, by definition, conduct their daily lives in spaces and places that were initially alien to them. The way in which migrants interact with the spaces around them can tell us much about the social, political, and religious engagements they invest in, as well as the very real way in which they experience their local milieu. Through a detailed study of Iraqi Shiis living in London, specifically in the north-western borough of Brent, this article will seek to trace the ways in which religious institutions have carved up the physical and social landscape of north-west London in ways that have enduring effect on the communities with which they engage. The increasing diversification of different religious establishments, I argue, has led to a fragmentation of the city-as-lived, in which the vast majority of practising Iraqi Shiis engage with only small isolated pockets of the urban environment on a daily basis. Moreover, the growing number of specifically Shia schools, charities, mosques, community centres and other such institutions has resulted in what I call a ‘sectarianisation’ of space in Brent, in which individuals hailing from different branches of Islam inhabit different spaces within the city despite often living within metres of each other. Drawing on a mixture of interviews, participant observation, and mapping techniques, I bring together theory and practice in order to sketch out the ways migrant lives can come to be localised in certain spaces, and what that can ultimately mean in terms of their political subjectivity and engagement
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