303 research outputs found

    Prevalence of type R virus-like particles in clones of BHK-21 cells

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/32926/1/0000308.pd

    Multi-level Hybrid Cache: Impact and Feasibility

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    Storage class memories, including flash, has been attracting much attention as promising candidates fitting into in today's enterprise storage systems. In particular, since the cost and performance characteristics of flash are in-between those of DRAM and hard disks, it has been considered by many studies as an secondary caching layer underneath main memory cache. However, there has been a lack of studies of correlation and interdependency between DRAM and flash caching. This paper views this problem as a special form of multi-level caching, and tries to understand the benefits of this multi-level hybrid cache hierarchy. We reveal that significant costs could be saved by using Flash to reduce the size of DRAM cache, while maintaing the same performance. We also discuss design challenges of using flash in the caching hierarchy and present potential solutions

    Embedding interagency working between schools and mental health specialists: A service evaluation of the Mental Health Services and Schools and Colleges Link Programme workshops

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    There is increasing focus on the need for schools to work more effectively with specialist mental health providers, but there have been historic challenges in embedding closer interagency working. This article reports the results of a service evaluation of a 2-day workshop designed to facilitate improved working between schools and children and young people’s mental health services (CYPMHS). Mental health leads from 255 schools, mental health professionals and other key stakeholders all took part in one of 26 two-day workshops across the United Kingdom. The impact on interagency working was examined using changes in pre- and post-survey results, changes in self-reported aspects of interagency working and 10 local reviews of practice. The pre–post questionnaires showed improvements in interagency working (e.g. 55% of school leads reported being in ‘monthly’ or ‘continuous’ contact with the National Health Service (NHS) CYPMHS1 at follow-up, compared with 24% at baseline). The group-completed CASCADE framework showed an overall increase in collaborative working, although some areas continued to report significant challenges such as in relation to common outcome measures. The local reviews found positive changes in interagency working, in terms of building relationships, improved communication and sharing good practice. This service evaluation of the workshops found some evidence of improved interagency working between schools and CYPMHS, but more controlled research is needed to consider generalisability and scalability

    The bisphosphonate pamidronate induces apoptosis in human melanoma cells in vitro

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    Pamidronate belongs to the class of nitrogen-containing bisphosphonates that are potent inhibitors of bone resorption frequently used for the treatment of osteoporosis and cancer-induced osteolysis. The inhibition of osteoclasts’ growth has been suggested as the main mechanism of the inhibitory effect of pamidronate on bone metastases. Recent findings indicated that bisphosphonates also have a direct apoptotic effect on other types of tumour cells. Nitrogen-containing bisphosphonates were shown to inhibit farnesyl diphosphate synthase, thus blocking the synthesis of higher isoprenoids. By this mechanism they inactivate monomeric G-proteins of the Ras and Rho families for which prenylation is a functional requirement. On the background of the known key role of G-proteins in tumorigenesis, we investigated a possible beneficial use of pamidronate in the treatment of malignant melanoma. Our results indicate that pamidronate inhibits the cell growth and induces apoptosis in human melanoma cells in vitro. Susceptibility to pamidronate did not correlate to CD95 ligand sensitivity or p53 mutational status. Furthermore it is interesting to note that overexpression of bcl-2 did not abolish pamidronate-induced apoptosis. These data suggests that pamidronate has a direct anti-tumour effect on malignant melanoma cells, independently of the Bax/Bcl-2 level

    Bisphosphonates as antimyeloma drugs

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    In patients with symptomatic multiple myeloma (MM), bisphosphonate (BP) treatment has been widely used to prevent bone loss and preserve skeletal health because of its proven effects on inhibiting osteoclast-mediated bone resorption. In addition to their effects on osteoclasts, it is becoming increasingly evident that BPs may have additional effects on the bone microenvironment and cells other than osteoclasts that may potentially inhibit the development and progression of MM. This review focuses on the pathophysiology of MM with an emphasis on the events that drive MM progression within the bone and the mechanisms by which BPs may inhibit specific processes. The underlying molecular mechanisms that drive the modulation of cellular fate and function and consequent physiological outcomes are described. Direct effects on myeloma cell growth and survival and the interactions between myeloma cells and the bone microenvironment are discussed. Clinical evidence of the antimyeloma effects of BPs is emerging and is also reviewed

    COVID-19 collaborative modelling for policy response in the Philippines, Malaysia and Vietnam

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    Mathematical models that capture COVID-19 dynamics have supported public health responses and policy development since the beginning of the pandemic, yet there is limited discourse to describe features of an optimal modelling platform to support policy decisions or how modellers and policy makers have engaged with each other. Here, we outline how we used a modelling software platform to support public health decision making for the COVID-19 response in the Western Pacific Region (WPR) countries of the Philippines, Malaysia and Viet Nam. This perspective describes an approach to support evidence-based public health decisions and policy, which may help inform other responses to similar outbreak events. The platform we describe formed the basis for one of the inaugural World Health Organization (WHO) Western Pacific (WPRO) Innovation Challenge awards, and was backed by collaboration between epidemiological modellers, those providing public health advice, and policy makers

    Genomic, Pathway Network, and Immunologic Features Distinguishing Squamous Carcinomas

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    This integrated, multiplatform PanCancer Atlas study co-mapped and identified distinguishing molecular features of squamous cell carcinomas (SCCs) from five sites associated with smokin
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