158 research outputs found
Giovenale (6, 634-644) di fronte a Persio (5, 1-20) sul tono grandis riguardo alla satira
A comparative analysis of the two passages shows that Juvenal means to be a continuator of Persiusâ ideas, but he also wants to stress the innovative strength of his own poetry. He highlights passages, in which his reader is invited to identify contrasts and affinities. Truth (verum) was the subject of both authors, as basic matter of satiric poetry, but in Juvenal it appears under monstrous shapes, typical of highly tragic literature. This approach was rejected by Persius, given its distance from realism
Treatment of recurrent epithelial ovarian cancer
Epidemiologic analysis reveals that the mortality rate from ovarian cancer is continuously decreasing due to the improvement of surgery and chemotherapy. However, the prognosis of ovarian cancer patients is still unsatisfactory overall considering that only 30% of patients are alive after five years. In fact, although surgery and first-line systemic chemotherapy induces complete and partial response in up to 80% of patients with about a 25% pathological complete remission rate, recurrences occur in the majority of patients. The role of surgery in recurrent disease has been recently studied and many patients can receive an optimal secondary cytoreduction. Most of the recurrent patients are subject to a number of treatment regimens that, although palliative in nature, are also able to prolong survival. Important results have been obtained in particular in platinum-sensitive recurrent disease where a platinum-based chemotherapy is able to prolong progression-free survival and overall survival. Overall, our armamentarium for the treatment of progressive or recurrent ovarian cancer is significantly richer than in the past, and in many patients it is possible to achieve our goal of controlling the chronic behavior of the disease
Radio multiwavelength analysis of the compact disk CX Tau: strong free-free variability or anomalous microwave emission?
Protoplanetary disks emit radiation across a broad range of wavelengths,
requiring a multiwavelength approach to fully understand their physical
mechanisms and how they form planets. Observations at sub-millimeter to
centimeter wavelengths can provide insights into the thermal emission from
dust, free-free emission from ionized gas, and possible gyro-synchrotron
emission from the stellar magnetosphere. This Letter focuses on CX Tau, a
star with an extended gas emission and a compact and
apparently structureless dust disk, with an average millimeter flux when
compared to Class II sources in Taurus. We present Karl G. Jansky Very Large
Array (VLA) observations in 4 bands (between 9.0 mm and 6.0 cm) and combine
them with archival data from the Atacama Large Millimeter/submillimeter Array
(ALMA), the Submillimeter Array (SMA) and the Plateau de Bure Interferometer
(PdBI). Such a multiwavelength approach allows to separate the dust continuum
from other emissions. After isolating the dust thermal emission, we derived an
upper limit of the dust disk extent at 1.3 cm which is consistent with
theoretical predictions of a radial drift-dominated disk. Centimeter data show
a peculiar behavior: deep observations at 6.0 cm did not detect the source,
while at 1.3 cm the flux density is anomalously higher than adjacent bands.
Intraband spectral indices suggest a dominant contribution from free-free
emission, whereas gyro-synchrotron emission is excluded. To explain these
observations, we propose strong variability of the free-free emission with
timescales shorter than a month. Another possible interpretation is the
presence of anomalous microwave emission from spinning dust grains.Comment: Accepted for publication in A&A Letters; 13 pages, 13 figures, 1
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Antiapoptotic and Antiautophagic Effects of Eicosapentaenoic Acid in Cardiac Myoblasts Exposed to Palmitic Acid
Apoptosis is a programmed cell death that plays a critical role in cell homeostasis. In particular, apoptosis in cardiomyocytes is involved in several cardiovascular diseases including heart failure. Recently autophagy has emerged as an important modulator of programmed cell death pathway. Recent evidence indicates that saturated fatty acids induce cell death through apoptosis and this effect is specific for palmitate. On the other hand, n-3 polyunsaturated fatty acids (PUFAs) have been implicated in the protection against cardiovascular diseases, cardiac ischemic damage and myocardial dysfunction. In the present study we show that n-3 PUFA eicosapentaenoic acid (EPA) treatment to culture medium of H9c2 rat cardiomyoblasts protects cells against palmitate-induced apoptosis, as well as counteracts palmitate-mediated increase of autophagy. Further investigation is required to establish whether the antiautophagic effect of EPA may be involved in its cytoprotective outcome and to explore the underlying biochemical mechanisms through which palmitate and EPA control the fate of cardiac cells
Does laparoscopic management of deep infiltrating endometriosis improve quality of life? A prospective study
<p>Abstract</p> <p>Background</p> <p>Deep infiltrating endometriosis (DIE) can affect importantly patients' quality of life (QOL). The aim of this study is to evaluate the impact of the laparoscopic management of DIE on QOL after six months from treatment.</p> <p>Methods</p> <p>It is a prospective cohort study. In a tertiary care university hospital, between April 2008 and December 2009, 100 patients underwent laparoscopic management of DIE and completed preoperatively and 6-months postoperatively a QOL questionnaire, the short form 36 (SF-36).</p> <p>Quality of life was measured through the SF-36 scores. Intra-operative details of disease site, number of lesions, type of intervention, period of hospital stay and peri-operative complications were noted.</p> <p>Results</p> <p>Six months postoperatively all the women had a significant improvement in every scale of the SF-36 (p < 0,0005). Among patients with intestinal DIE, significant differences in postoperative scores of SF-36 were not detected between patients submitted to nodule shaving and segmental resection (p > 0.05). There was no significant difference in the SF-36 scores at 6 months from surgery between patients who received postoperative medical treatment and patients who did not (p > 0.05).</p> <p>Conclusions</p> <p>Laparoscopic excision of DIE lesions significantly improves general health and psycho-emotional status at six months from surgery without differences between patients submitted to intestinal segmental resection or intestinal nodule shaving.</p
Haemagglutination inhibition and virus microneutralisation serology assays: use of harmonised protocols and biological standards in seasonal influenza serology testing and their impact on inter-laboratory variation and assay correlation: A FLUCOP collaborative study
Introduction: The haemagglutination inhibition assay (HAI) and the virus microneutralisation assay (MN) are long-established methods for quantifying antibodies against influenza viruses. Despite their widespread use, both assays require standardisation to improve inter-laboratory agreement in testing. The FLUCOP consortium aims to develop a toolbox of standardised serology assays for seasonal influenza. Building upon previous collaborative studies to harmonise the HAI, in this study the FLUCOP consortium carried out a head-to-head comparison of harmonised HAI and MN protocols to better understand the relationship between HAI and MN titres, and the impact of assay harmonisation and standardisation on inter-laboratory variability and agreement between these methods.
Methods: In this paper, we present two large international collaborative studies testing harmonised HAI and MN protocols across 10 participating laboratories. In the first, we expanded on previously published work, carrying out HAI testing using egg and cell isolated and propagated wild-type (WT) viruses in addition to high-growth reassortants typically used influenza vaccines strains using HAI. In the second we tested two MN protocols: an overnight ELISA-based format and a 3-5 day format, using reassortant viruses and a WT H3N2 cell isolated virus. As serum panels tested in both studies included many overlapping samples, we were able to look at the correlation of HAI and MN titres across different methods and for different influenza subtypes.
Results: We showed that the overnight ELISA and 3-5 day MN formats are not comparable, with titre ratios varying across the dynamic range of the assay. However, the ELISA MN and HAI are comparable, and a conversion factor could possibly be calculated. In both studies, the impact of normalising using a study standard was investigated, and we showed that for almost every strain and assay format tested, normalisation significantly reduced inter-laboratory variation, supporting the continued development of antibody standards for seasonal influenza viruses. Normalisation had no impact on the correlation between overnight ELISA and 3-5 day MN formats.publishedVersio
Predictors of long-term response to abiraterone in patients with metastastic castration-resistant prostate cancer: a retrospective cohort study
We aimed to identify clinical predictors of long-term response to abiraterone (defined as >12 months drug exposure) in a retrospective cohort of metastatic castration-resistant prostate cancer patients treated in post-docetaxel setting at 24 Italian centers. The Cox proportional hazards model was used to analyze the association between clinical features and the duration of drug exposure. Results were expressed as hazard ratios (HR) with associated 95% confidence intervals (CI). A total of 143 patients met the inclusion criteria. Their median age was 73 years, median Gleason score 8 and median abiraterone exposure 20 months. At the univariate analysis, a significant correlation with the duration of abiraterone exposure was found for Gleason score (HR 0.82, 95% CI 0.71-0.96; p=0.012), PSA (HR 1.10, 95% CI 1.03-1.18; p=0.08) and lactic dehydrogenase levels (HR 1.22, 95% CI 1.02-1.46; p=0.027), while the association between lower alkaline phosphatase levels and treatment duration was marginally significant (HR 1.07, 95% CI 0.99-1.16; p=0.074). Only PSA and Gleason score were predictive of long-term treatment duration in the multivariate analysis. No other clinical factors resulted to be predictive of sustained response to abiraterone, including metastatic disease at diagnosis and visceral disease, suggesting that all subgroups of patients may derive a substantial clinical benefit from abiraterone treatment. These findings need to be validated in prospective, larger studies
Acompanhamento da construçao de obras complementares, integradas no aproveitamento hidroelétrico do baixo sabor
Trabalho final de mestrado para obtenção do grau de mestre em Engenharia Civil na årea de Especialização em EdificaçÔesO presente relatório de estågio enquadra-se no ùmbito do Trabalho Final de Mestrado,
do curso de Engenharia Civil, Ărea de Especialização de EdificaçÔes, ministrado no
Instituto Superior de Engenharia de Lisboa (ISEL).
O EstĂĄgio foi realizado entre meados de junho e dezembro 2014, na empreitada de
construção do Empreendimento do Aproveitamento Hidroelétrico do Baixo Sabor
(AHBS), empreitada adjudicada às empresas Bento Pedroso ConstruçÔes, SA e Lena
â Engenharia e ConstruçÔes, SA, pela empresa EDP â GestĂŁo da Produção de
Energia, SA.
Concretamente, o estĂĄgio traduziu-se no acompanhamento de processos construtivos
no Empreendimento, em particular nas Obras Complementares, onde se destaca a
Construção do novo Santuårio de Santo Antão, com diversas edificaçÔes de apoio, 3
Restabelecimentos a Estradas Nacionais, 1 Restabelecimento a um caminho agrĂcola
e 1 Restabelecimento a um caminho florestal.
O estĂĄgio na empreitada, baseou-se nas seguintes atividades:
⹠Planear, organizar e dirigir os trabalhos, garantindo a sua execução dentro
dos prazos e orçamento;
⹠Gerir as relaçÔes com os subempreiteiros, supervisionando os trabalhos;
âą Gerir equipas de trabalho do ACE, materiais e equipamentos envolvidos
nas diversas obras.
Quando se iniciou o estĂĄgio, a Empreitada jĂĄ se encontrava na sua fase final.The present report refers to the Masterâs Disserttion in the Civil Engineeringâ Buildings
Specialization Area, held at the Lisbonâs Politechnic Engineering Institute (ISEL).
The post-graduate training was performed between July and December 2014 within the
construction contract of the Baixo Sabor Hydroelectric Project (AHBS), a contract
awarded to the companies Bento Pedroso ConstruçÔes, SA and Lena - Engenharia e
ConstruçÔes, SA, by EDP Gestão da Produção de Energia, SA.
Objectively, the post-graduate training tasks were the follow up of construction
processes in this Contract, in particular in the Complementary tasks, amongst them,
being the new Santo AntĂŁo Sanctuary an highlight. Additionally, several supporting
buildings, as well as 3 restorations of National Roads, 1 restoration of an agricultural
path and 1 restoration of a forest path.
The post-graduate training was based on the following activities:
âą Plan, organize and direct the tasks, ensuring its execution within the
deadlines and budget;
âą Manage relations with subcontractors, supervise the subtasks;
âą Manage the work teams, materials and equipment involved in the various
assignments.
When the post-graduate training begins, the Contract is already in its final phase.N/
INfluenza Vaccine Indication During therapy with Immune checkpoint inhibitors: a transversal challenge. The INVIDIa study
Aim: Considering the unmet need for the counseling of cancer patients treated with immune checkpoint inhibitors (CKI) about influenza vaccination, an explorative study was planned to assess flu vaccine efficacy in this population. Methods: INVIDIa was a retrospective, multicenter study, enrolling consecutive advanced cancer outpatients receiving CKI during the influenza season 2016-2017. Results: Of 300 patients, 79 received flu vaccine. The incidence of influenza syndrome was 24.1% among vaccinated, versus 11.8% of controls; odds ratio: 2.4; 95% CI: 1.23-4.59; p = 0.009. The clinical ineffectiveness of vaccine was more pronounced among elderly: 37.8% among vaccinated patients, versus 6.1% of unvaccinated, odds ratio: 9.28; 95% CI: 2.77-31.14; p < 0.0001. Conclusion: Although influenza vaccine may be clinically ineffective in advanced cancer patients receiving CKI, it seems not to negatively impact the efficacy of anticancer therapy
Effects of global change during the 21st century on the nitrogen cycle
The global nitrogen (N) cycle at the beginning of the 21st century has been shown to be strongly influenced by the inputs of reactive nitrogen (Nr) from human activities, including combustion-related NOx, industrial and agricultural N fixation, estimated to be 220 Tg N yrâ1 in 2010, which is approximately equal to the sum of biological N fixation in unmanaged terrestrial and marine ecosystems. According to current projections, changes in climate and land use during the 21st century will increase both biological and anthropogenic fixation, bringing the total to approximately 600 Tg N yrâ1 by around 2100. The fraction contributed directly by human activities is unlikely to increase substantially if increases in nitrogen use efficiency in agriculture are achieved and control measures on combustion-related emissions implemented.
Some N-cycling processes emerge as particularly sensitive to climate change. One of the largest responses to climate in the processing of Nr is the emission to the atmosphere of NH3, which is estimated to increase from 65 Tg N yrâ1 in 2008 to 93 Tg N yrâ1 in 2100 assuming a change in global surface temperature of 5 °C in the absence of increased anthropogenic activity. With changes in emissions in response to increased demand for animal products the combined effect would be to increase NH3 emissions to 135 Tg N yrâ1. Another major change is the effect of climate changes on aerosol composition and specifically the increased sublimation of NH4NO3 close to the ground to form HNO3 and NH3 in a warmer climate, which deposit more rapidly to terrestrial surfaces than aerosols. Inorganic aerosols over the polluted regions especially in Europe and North America were dominated by (NH4)2SO4 in the 1970s to 1980s, and large reductions in emissions of SO2 have removed most of the SO42â from the atmosphere in these regions. Inorganic aerosols from anthropogenic emissions are now dominated by NH4NO3, a volatile aerosol which contributes substantially to PM10 and human health effects globally as well as eutrophication and climate effects. The volatility of NH4NO3 and rapid dry deposition of the vapour phase dissociation products, HNO3 and NH3, is estimated to be reducing the transport distances, deposition footprints and inter-country exchange of Nr in these regions.
There have been important policy initiatives on components of the global N cycle. These have been regional or country-based and have delivered substantial reductions of inputs of Nr to sensitive soils, waters and the atmosphere. To date there have been no attempts to develop a global strategy to regulate human inputs to the nitrogen cycle. However, considering the magnitude of global Nr use, potential future increases, and the very large leakage of Nr in many forms to soils, waters and the atmosphere, international action is required. Current legislation will not deliver the scale of reductions globally for recovery from the effects of Nr deposition on sensitive ecosystems, or a decline in N2O emissions to the global atmosphere. Such changes would require substantial improvements in nitrogen use efficiency across the global economy combined with optimization of transport and food consumption patterns. This would allow reductions in Nr use, inputs to the atmosphere and deposition to sensitive ecosystems. Such changes would offer substantial economic and environmental co-benefits which could help motivate the necessary actions
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