Acute oxaliplatin-induced thrombotic thrombocytopenic purpura: A case report and results from a cytoflourimetric assay of platelet fibrinogen receptor

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Preliminary Report on the Study of Beam-Induced Background Effects at a Muon Collider

Physics at a multi-TeV muon collider needs a change of perspective for the detector design due to the large amount of background induced by muon beam decays. Preliminary studies, based on simulated data, on the composition and the characteristics of the particles originated from the muon decays and reaching the detectors are presented here. The reconstruction performance of the physics processes $H\to b\bar b$ and $Z\to b\bar b$ has been investigated for the time being without the effect of the machine induced background. A preliminary study of the environment hazard due to the radiation induced by neutrino interactions with the matter is presented using the FLUKA simulation program

Circulating Endothelial Cell Levels Correlate with Treatment Outcomes of Splanchnic Vein Thrombosis in Patients with Chronic Myeloproliferative Neoplasms

Circulating endothelial cells (CECs) are viable, apoptotic or necrotic cells, identified by CD 146 surface antigen expression, considered a biomarker of thrombotic risk, given their active role in inflammatory, procoagulant and immune processes of the vascular compartment. Growing evidence establishes that CECs are also involved in the pathogenesis of several hematological and solid malignancies. The primary aim of this study was to verify if CEC levels could predict both the course and treatment responses of splanchnic vein thrombosis (SVT), either in patients affected by myeloproliferative neoplasms (MPNs) or liver disease. Thus, a retrospective multicenter study was performed; fifteen patients receiving anticoagulant oral treatment with vitamin k antagonists (VKA) for SVT were evaluated. Nine patients were affected by MPN, and all of them received cytoreduction in addition to anticoagulant therapy; four of these patients had primary myelofibrosis (PMF) and were treated with ruxolitinib (RUX), and one patient with primary myelofibrosis, two patients with essential thrombocythemia (ET), and two patients with polycythemia vera (PV) were treated with hydroxyurea (HU). Six patients affected by liver diseases (three with liver cirrhosis and three with hepatocellular carcinoma) were included as the control group. CECs were assayed by flow cytometry on peripheral blood at specific time points, for up to six months after enrollment. The CEC levels were related to C-reactive protein (CRP) levels, splenic volume reduction, and thrombus recanalization, mainly in MPN patients. In patients with liver cirrhosis (LC) and hepatocellular carcinoma (HCC), for which the mechanism of SVT development is quite different, the relationship between CEC and SV reduction was absent. In conclusion, the CEC levels showed a significant correlation with the extent of venous thrombosis and endothelial cell damage in myeloproliferative neoplasm patients with splanchnic vein thrombosis. Although preliminary, these results show how monitoring CEC levels during cytoreductive and anticoagulant treatments may be useful to improve SVT outcome in MPN patients

ANÁLISE DO DESEMPENHO DE ALUNOS EM UM CURSO OFERECIDO NA MODALIDADE A DISTÂNCIA

Este artigo apresenta os resultados de uma pesquisa que visou realizar uma análise da influência de conhecimentos prévios em Língua Portuguesa e Informática no desempenho de alunos de um curso a distância. Para tanto, foram propostos e cumpridos os seguintes objetivos específicos: (a) identificar as características pessoais e profissionais dos alunos que influenciaram em seu conhecimento prévio em Língua Portuguesa e Informática; e (b) analisar a relação entre o nível de conhecimento dos alunos nessas áreas e o seu desempenho ao longo do curso. A referida pesquisa pode ser classificada como exploratória e quantitativa, e os dados primários foram coletados junto a uma amostra de 232 alunos de um curso de aperfeiçoamento oferecido na modalidade à distância no ano de 2012. Os dados foram analisados pelas seguintes técnicas: estatística descritiva, teste de Kolmogorov-Smirnov, teste de kruskal-wallis e correlação de Spearman. Constatou-se que algumas características pessoais e profissionais dos alunos influenciaram os seus conhecimentos prévios em Informática: cargo ocupado, tempo de magistério e a localidade da residência do respondente. Verificou-se, ainda, que os conhecimentos prévios em Informática e Língua Portuguesa não influenciaram significativamente o desempenho dos alunos no curso analisado

Atypical presentations of thrombotic thrombocytopenic purpura in middle-aged women with recurrent cerebral macrovascular thrombosis: a case report

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Prognostic role of serum concentrations of high-sensitivity C-reactive protein in patients with metastatic colorectal cancer: Results from the ITACa trial

Serum levels of C-reactive protein are (CRP) higher in patients with neoplastic conditions and numerous studies have been performed to clarify the etiologic and prognostic role of the high-sensitivity CRP (hs-CRP) in cancer. Our study was conducted on patients enrolled in the prospective randomized "Italian Trial in Advanced Colorectal Cancer (ITACa)" to assess hs-CRP levels and their impact on overall survival (OS) and progression-free survival (PFS). Serum samples from 132 ITACa patients were collected at baseline and 2 months after starting first-line chemotherapy. The supernatant was immediately transferred to cryovials and stored at -80°C. After thawing, hs-CRP was measured with the Cobas c501 analyzer. High levels of hs-CRP (≥ 13.1 mg/L) were associated with poorer median PFS (p < 0.0001) and OS (p < 0.0001) than low hs-CRP levels (< 13.1 mg/L). hs-CRP values in 107 patients were evaluated again after 2 months of therapy, revealing that patients with low hs-CRP levels in both baseline and second serum samples had the best median PFS and OS. Our study confirms the prognostic value of hs-CRP in patients with metastatic colorectal carcinoma

Separate episodes of capillary leak syndrome and pulmonary hypertension after adjuvant gemcitabine and three years later after nab-paclitaxel for metastatic disease

Background: Systemic capillary leak syndrome is a rare disease with a high mortality rate. This syndrome is characterised by generalised edema, hypotension, hemoconcentration, and hypoproteinemia. The cause is the sudden onset of capillary hyperpermeability with extravasations of plasma from the intravascular to the extravascular compartment. We present the case of a patient who experienced two episodes of systemic capillary leak syndrome and pulmonary hypertension; the first after gemcitabine in an adjuvant setting and the second three years later after treatment with nab-paclitaxel for metastatic disease.Case presentation: A 65-year-old patient underwent a pancreatectomy in January 2010 for ductal carcinoma (pT3 N0 M0, stage IIa), followed by adjuvant chemotherapy. Seven days after the last cycle, she developed dyspnea associated with orthopnea and cough. A transthoracic cardiac ecocolordoppler was performed, with evidence of pulmonary hypertension (58 mmHg). Blood tests showed an increase in creatinine, pro-BNP and D-Dimer. She began high-dose diuretic therapy combined with cortisone. After a month, the patient was eupneic and the anasarca had resolved. We decided gradually to reduce the steroid and diuretic therapy. After ten days of the reduction, the patient began to re-present the same symptoms after treatment with gemcitabine. Corticosteroid therapy was restored with rapid clinical benefit and decreased pro-BNP after a week of treatment. After two years, the disease returned. As a first line treatment, it was decided to use nab-paclitaxel 100 mg/m2 weekly. After two doses, followed by approximately 14 days of treatment, the patient developed acute respiratory distress syndrome. The clinical suspicion was a relapse of capillary leak syndrome and treatment with a high-dose diuretic (furosemide 250 mg daily) was started combined with cortisone (40 mg methylprednisolone). The patient showed a progressive clinical benefit.Conclusions: In patients treated with gemcitabine and nab-paclitaxel who experience a sudden onset of diffuse edema with respiratory distress, capillary leak syndrome should be suspected. Immediate treatment with corticosteroids may be life-saving. © 2013 Casadei Gardini et al.; licensee BioMed Central Ltd

Paraneoplastic lipase and amylase production in a patient with small-cell lung cancer: Case report

Background: Small-cell lung cancer (SCLC) is known to express antigens of both the neural crest and epithelium, and to secrete polypeptide hormones and enzymes. Anecdotal reports correlate lung cancer with marked hyperamylasemia, and a review of the literature reveals only one case of metastatic SCLC linked to high paraneoplastic lipase production. Case presentation: We present the case of a patient with metastatic SCLC who showed both lipase and pancreatic isoamylase elevation in the absence of acute pancreatitis. Chemotherapy resulted in a rapid reduction in serum lipase and in pancreatic isoamylase which was correlated with the radiological response of the tumor to therapy. Lipase and pancreatic isoamylase expression in tumor cells from the lung biopsy was confirmed by immunohistochemical staining. Conclusions: This is a very rare case of paraneoplastic syndrome linked to metastatic SCLC. The enzymes secreted could be used as markers of response to treatment until clonal selection mechanisms and intratumor heterogeneity induce changes in biochemical characteristics and consequently in tumor behavior

Crilin: A Semi-Homogeneous Calorimeter for a Future Muon Collider

Calorimeters, as other detectors, have to face the increasing performance demands of the new energy frontier experiments. For a future Muon Collider the main challenge is given by the Beam Induced Background that may pose limitations to the physics performance. However, it is possible to reduce the BIB impact by exploiting some of its characteristics by ensuring high granularity, excellent timing, longitudinal segmentation and good energy resolution. The proposed design, the Crilin calorimeter, is an alternative semi-homogeneous ECAL barrel for the Muon Collider based on Lead Fluoride Crystals (PbF2) with a surface-mount UV-extended Silicon Photomultipliers (SiPMs) readout with an optimized design for a future Muon Collider

AVALIAÇÃO MULTITEMPORAL DAS PERDAS DE SOLOS NA BACIA DO RIO TAQUARIZINHO-MS

O ambiente SIG (Sistema de Informações Geográficas) é o ideal para integrar dados, informações e cartas de naturezas diferentes. Por exemplo, dados climáticos e cartas topográficas ou de solos podem ser analisados em conjunto, levando toda a informação para uma base comum, o que permite a sua integração e uso. A Equação Universal de Perdas dos Solos (EUPS ou USLE) é atualmente utilizada, com sucesso, como uma forma para a avaliação da perda dos solos por erosão laminar e foi aplicada para a Bacia do Rio Taquarizinho (ao Sul de Coxim, Mato Grosso do Sul), região que apresentou grandes modificações no tipo de uso e ocupação do solo no período analisado. Neste trabalho são apresentados os parâmetros envolvidos com a USLE, alguns obtidos da digitalização de cartas temáticas e tabelas como de Erosividade das chuvas (R), Erodibilidade do solo (K) ou Uso e Manejo do Solo e Práticas Conservacionistas (CP) e outros, como Comprimento (L) e Declividade de vertentes (S,) obtidos em ambiente SIG, através de dados topográficos. O ambiente SIG permitiu a completa integração entre os dados para a obtenção dos parâmetros da USLE e os resultados. Para a Bacia do Rio Taquarizinho a USLE foi aplicada em três diferentes momentos: 1966, 1985 e 1996. Esta aplicação multitemporal mostrou a tendência evolutiva do processo erosivo na região. Para os valores absolutos da taxa de erosão laminar dos solos, de 1966 a 1996, em alguns locais, o desmatamento implicou num aumento da taxa de erosão laminar dos solos em mais de 50 vezes. As perdas médias anuais de solo por erosão laminar foram representadas por valores médios, para toda a Bacia do Taquarizinho, de 4,44 ton/ha. para 1966, de 5,53 ton/ha. para 1985 e de 8,65 ton/ha. para 1996. MULTITEMPORAL EVALUATION OF SOIL LOSS IN THE TAQUARIZINHO BASIN, MATO GROSSO DO SUL - BRAZIL Abstract The GIS - Geographic Information System environment is ideal for integrating data, information and different kinds of maps. For example, climate data and topographic or soil cover maps can be analyzed together, bringing all the information into a common base, thus permitting integration and use. The Universal Soil Loss Equation (USLE) is currently used successfully as a form of evaluating soil loss via laminar erosion, and it was applied to the Taquarizinho River Basin (to the south of Coxim, Mato Grosso do Sul State), a region which showed great changes in the type of use and occupation of the soil during the period analyzed. In the present work are presented the parameters involved in the USLE, some obtained from the digitalization of thematic maps and tables, such as the Rain Erosive Potential (R), Soil Erodability (K), and Cover and Management of the Soil and Conservation Practices (CP), and others, such as Length (L) and Slope Declivity (S), obtained from the GIS environment, from topographic data. The GIS environment permitted a complete integration between the data used to obtain the USLE parameters, and the results. For the Taquarizinho River Basin, the USLE was applied to three different periods: 1966, 1985 and 1996. This multi-temporal application showed a tendency of evolving erosion in the region. Calculations of the absolute values of rates of laminar erosion of the soils indicate that deforestation has lead to an increase of more than fifty times in such erosion, from 1966 to 1996. The mean annual losses of soil from laminar erosion for the entire Taquarizinho River Basin are calculated to have been 4.44 ton/ha in 1996, 5.53 ton/ha in 1985, and 8.65 ton/ha in 1996