244 research outputs found

    Late solitary bone metastasis of a primary pulmonary synovial sarcoma with SYT-SSX1 translocation type: case report with a long follow-up

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    Primary synovial sarcoma outside its classical presentation in para-articular soft tissue of young patients is rare but regularly reported. One of the rarest primary locations is the lung. We describe a 73-year-old female patient who presented with a solitary malignant bone tumor 8years after the resection of a lung neoplasm. The bone tumor was classified as an osteosarcoma and the lung tumor as an atypical carcinoid tumor at their first respective diagnostic work-ups. The resection of the affected humerus with allograft and endoprosthesis implantation followed. Reevaluation of the tumor samples at the time of the local recurrence of the bone tumor 6years following the initial symptoms of the bone tumor lead to the reclassification of both specimens as synovial sarcomas. Both neoplasms contained the SYT-SSX1 type of the diagnostic translocation t(X;18) as detected by the reverse-transcription polymerase chain reaction analysis. The patient died 14years after the resection of the primary synovial sarcoma of the lung and 6years following the occurrence of the bone metastasis. This prolonged clinical course is uncommon for the SYT-SSX1 translocation, which, in other locations, is usually associated with an unfavorable prognosi

    Microfluidics-based approaches to the isolation of African trypanosomes

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    African trypanosomes are responsible for significant levels of disease in both humans and animals. The protozoan parasites are free-living flagellates, usually transmitted by arthropod vectors, including the tsetse fly. In the mammalian host they live in the bloodstream and, in the case of human-infectious species, later invade the central nervous system. Diagnosis of the disease requires the positive identification of parasites in the bloodstream. This can be particularly challenging where parasite numbers are low, as is often the case in peripheral blood. Enriching parasites from body fluids is an important part of the diagnostic pathway. As more is learned about the physicochemical properties of trypanosomes, this information can be exploited through use of different microfluidic-based approaches to isolate the parasites from blood or other fluids. Here, we discuss recent advances in the use of microfluidics to separate trypanosomes from blood and to isolate single trypanosomes for analyses including drug screening

    Care for the Future: Heritage Education in the Context of Rapa Nui (Easter Island) and Other Small Island Communities.

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    Education is accepted to be the principal means by which archaeological heritage can be both enjoyed and preserved. Links between research and education through outreach are an important part of archaeological projects on Rapa Nui, for example providing new information for site interpretation. Knowledge exchange between researchers and heritage managers can be another important outcome, or impact, of research. The preliminary findings from doctoral interview-based research with residents pertaining to archaeology, heritage management and heritage education programs that have taken place on Rapa Nui the island will be discussed here. We examine the role archaeological heritage is playing in Rapa Nui in education contexts, and make some observations as to the impact and legacy of this important work. One aspect of the education program is in developing links between researchers, heritage managers, museums and school pupils between Rapa Nui, and the islands of Orkney, Scotland. The benefits and potential of links between small island communities in heritage education and management are considered in this paper

    Deterministic Lateral Displacement:Challenges and Perspectives

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    The advent of microfluidics in the 1990s promised a revolution in multiple industries from healthcare to chemical processing. Deterministic lateral displacement (DLD) is a continuous-flow microfluidic particle separation method discovered in 2004 that has been applied successfully and widely to the separation of blood cells, yeast, spores, bacteria, viruses, DNA, droplets, and more. Deterministic lateral displacement is conceptually simple and can deliver consistent performance over a wide range of flow rates and particle concentrations. Despite wide use and in-depth study, DLD has not yet been fully elucidated or optimized, with different approaches to the same problem yielding varying results. We endeavor here to provide up-to-date expert opinion on the state-of-art and current fundamental, practical, and commercial challenges with DLD as well as describe experimental and modeling opportunities. Because these challenges and opportunities arise from constraints on hydrodynamics, fabrication, and operation at the micro- and nanoscale, we expect this Perspective to serve as a guide for the broader micro- and nanofluidic community to identify and to address open questions in the field

    Nanoindentation in polymer nanocomposites

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    Multifocal Langerhans Cell Histiocytosis in an Adult

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