136 research outputs found

    COVID-19 in solid organ transplantation: an analysis of the impact on transplant activity and wait lists

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    The limited knowledge about COVID-19, the disease caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), makes mortality figures hard to interpret in the undetermined prevalence of an asymptomatic infection. Treatments are currently being tested, but without proof of an effective vaccination, the fear of further detrimental outcomes, as a result of a second wave, persists. One of the main differences in the death toll among the various countries seems related to the different response to the outbreak: early measures of containment as lockdown, revealed their effectiveness in mitigating the virus spread, with the earliest the lockdown, the lower the death toll

    Assessing kidney graft viability and its cells metabolism during machine perfusion

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     Kidney transplantation is the golden treatment for end‐stage renal disease. Static cold  storage is currently considered the standard method of preservation, but dynamic techniques, such  as machine perfusion (MP), have been shown to improve graft function, especially in kidneys donated by extended criteria donors and donation after circulatory death. With poor organ quality  being a major reason for kidneys not being transplanted, an accurate, objective and reliable quality  assessment during preservation could add value and support to clinicians’ decisions. MPs are  emerging technologies with the potential to assess kidney graft viability and quality, both in the  hypothermic and normothermic scenarios. The aim of this review is to summarize current tools for  graft viability assessment using MP prior to implantation in relation to the ischemic damage.&nbsp

    Multifunctional bioinspired sol-gel coatings for architectural glasses

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    Although several multinational companies have recently released products incorporating bioinspired functional coatings, their practical integration in building envelopes is still an open issue. High production costs associated to the existing vacuum deposition technologies, as well as the difficulties in extending the number of functions achievable by a single coating, represent to date the main limitations to their diffusion on a large scale. This review summarizes the key topics in the field of functional coatings for architectural glasses, focusing in particular on the potential applications of sol-gel based antireflective and self-cleaning coatings, that have received a tremendous attention in the last years. It provides an overview of the recent research efforts aimed to improve their properties and to extend their range of applicability. The bioinspired principles, upon which such coatings are based, are also described and are related to the chemical and morphological properties of such surfaces. (C) 2009 Elsevier Ltd. All rights reserved

    Cervico-Facial Actinomycosis: Epidemiological and clinical comments

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    In a retrospective investigation performed in the department of Surgical Odontostomatology of Palermo University Polyclinic from 1997-2006, the authors examined 12 cases of cervico-facial actinomycosis, taking into consideration age range, gender distribution, predisposing factors and symptoms. In concordance with reports in literature, they found that the disease was perimandibular in 65%, they also report the diagnostic methods and therapeutic approaches used in the stud

    ENVIRONMENTAL FACTORS IMPACT AND INCIDENCE OF PARASITISMOF PSYLLAEPHAGUS BLITEUSRIEK (HYMENOPTERA ENCYRTIDAE)ON POPULATIONS OF GLYCASPIS BRIMBLECOMBEIMOORE(HEMIPTERA APHALARIDAE) IN MEDITERRANEAN CLIMATIC AREAS

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    The red gum lerp psyllid, Glycaspis brimblecombeiMoore (Hemiptera, Aphalaridae), is an Australian native sap-sucking insect pest of eucalypts that has been first reported for the West Palaearctic Region in 2008 and, in 2010, it hasbeen found also in Italy. Subsequently its primary parasitoid, Psyllaephagus bliteus Riek (Hymenoptera: Encyrtidae),was also detected within the main European and North African infested areas, where no release of the parasitoid was everperformed. This study, carried out in 30 Eucalyptus camaldulensis plantations located along the coast, on the hills andthe mountains in Mediterranean climatic areas of Sicily (Italy), aimed to determine the influence of environmentalparameters on the incidence of both, the psyllid infestation level and the parasitization activity. P. bliteusreached high-est average levels in summer samplings and resulted widespread in Sicily at all detected altitudes without statisticallysignificant differences. P. bliteus parasitization is the main factor lowering G. brimblecombei infestation; this result,together with the accidental and contemporaneous arrival of the host and its parasitoid, could explain the absence of highdamage level on eucalypts in Sicily. The most significant metric factors positively influencing G. brimblecombei infes-tation are the percentage of daily hours above 80% of relative humidity and the average maximum temperature, obvi-ously related to other, but less significant climatic factors. The altitude affects both infestation and parasitization, but sin-gle sites could explain significantly more, so that the local conditions where the samplings were carried out have to beconsidered as the main responsibles for the variability in the obtained results. In any sampled Sicilian site, from sea levelto 540 m a.s.l., both the psyllid and its parasitoids show a good adaptation to climatic conditions, confirming that areasfitting for E. camaldulensisgrowth fit also for P. bliteus activity, and proving that Mediterranean climate, differently fromsome inland areas of California, does not obstacle its parasitic activity
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