Publications by authors named "Chiarella F"

The diketopyrrolopyrrole (DPP) unit represents one of the building blocks more widely employed in the field of organic electronics; in most of the reported DPP-based small molecules, this unit represents the electron acceptor core symmetrically coupled to donor moieties, and the solubility is guaranteed by functionalizing lactamic nitrogens with long and branched alkyl tails. In this paper, we explored the possibility of modulating the solubility by realizing asymmetric DPP derivatives, where the molecular structure is extended in just one direction. Four novel derivatives have been prepared, characterized by a common dithyenil-DPP fragment and functionalized on one side by a thiophene unit linked to different auxiliary electron acceptor groups.

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Electronic devices relying on the combination of different conjugated organic materials are considerably appealing for their potential use in many applications such as photovoltaics, light emission, and digital/analog circuitry. In this study, the electrical response of field-effect transistors achieved through the evaporation of picene and PDIF-CN molecules, two well-known organic semiconductors with remarkable charge transport properties, was investigated. With the main goal to get a balanced ambipolar response, various device configurations bearing double-layer, triple-layer, and codeposited active channels were analyzed.

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Aims: The role of the implantable cardioverter defibrillator (ICD) in primary prevention real-world population is debated. We sought to evaluate the incidence, predictors and prognostic impact of ICD shocks in consecutive heart failure patients implanted for primary prevention at our tertiary institution.

Methods And Results: We retrospectively selected a sample of 497 patients (mean age 64.

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High levels of LDL cholesterol (LDL-C) represent a causal factor for cardiovascular diseases on an atherosclerotic basis, with a direct correlation between these and mortality or cardiovascular events, such that the reduction of both is associated proportionally and linearly with the reduction of LDL-C.Statins and ezetimibe are used for LDL-C lowering but may not be sufficient to achieve the targets defined by the ESC/EAS guidelines, which recommend use of PCSK9 inhibitors for further LDL-C reduction in patients not at goal.This project submitted 86 clinical scenarios to a group of experts, cardiologists, internists and lipidologists, collecting their opinion on the appropriateness of different behaviors and decisions.

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Guidelines recommend angiotensin-converting enzyme inhibitors (ACEi) and angiotensin II receptor blockers (ARB) for treatment of heart failure with reduced ejection fraction (HFrEF), but these medications are underprescribed in clinical practice. We reviewed the records of HF patients receiving a first visit in a tertiary outpatient clinic from January 1st 2004 to May 31st 2015, and selected those with a serum creatinine concentration (sCr) available at both the first and last visit and < 3.5 mg/dL at baseline, and a left ventricular ejection fraction (LVEF) < 50% at the first visit.

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Objective: Patients with non ST-segment elevation acute coronary syndromes (NSTE-ACS) and peripheral arterial disease (PAD) present a worse prognosis compared to those without PAD. We sought to describe contemporary trends of in-hospital management and outcome of patients admitted for NSTE-ACS with associated PAD.

Methods: We analyzed data from 6 Italian nationwide registries, conducted between 2001 and 2014, including consecutive NSTE-ACS patients.

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We discuss the formation and post-deposition instability of nanodrop-like structures in thin films of PDIF-CN2 (a perylene derivative) deposited via supersonic molecular beam deposition technique on highly hydrophobic substrates at room temperature. The role of the deposition rate on the characteristic lengths of the organic nanodrops has been investigated by a systematic analysis of atomic force microscope images of the thin films and through the use of the height-height correlation function. The nanodrops appear to be a metastable configuration for the freshly-deposited films.

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We report high-resolution surface morphology and friction force maps of polycrystalline organic thin films derived by deposition of the n-type perylene diimide semiconductor PDI8-CN. We show that the in-plane molecular arrangement into ordered, cofacial slip-stacked rows results in a largely anisotropic surface structure, with a characteristic sawtooth corrugation of a few Ångstroms wavelength and height. Load-controlled experiments reveal different types of friction contrast between the alternating sloped and stepped regions, with transitions from atomic-scale dissipative stick-slip to smooth sliding with ultralow friction within the surface unit cell.

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Objective: Pneumonia is most frequently produced by the microaspiration of flora that colonizes the oropharynx. Etiological diagnosis of pneumonia is infrequent in clinical practise and empirical treatment should be prescribed. The aims of the present study were to determine the factors associated with oropharynx colonization by uncommon microorganisms (UM) and to develop a predictive model.

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Aims: To describe the clinical characteristics, contemporary trends of in-hospital management and outcome of patients admitted for an acute coronary syndrome (ACS) with associated atrial fibrillation (AF).

Methods: We analyzed data from four Italian nationwide prospective registries, conducted between 2001 and 2014, including consecutive ACS patients.

Results: Out of 16,803 ACS patients, 1019 (6.

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Influenza virus infection is a major health care burden and is associated with significant morbidity and mortality. The 2009 influenza pandemic highlighted the importance of influenza surveillance. The objective of this study was to assess the epidemiology and activity of influenza A and B viruses in adults and children in the post-pandemic period with a special focus on the pediatric population.

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Aim: To assess the prevalence, clinical characteristics and independent prognostic impact of atrial fibrillation (AF) in chronic heart failure (CHF) patients, and the potential protective effect of disease-modifying medications, particularly beta-blockers (BB).

Methods: We retrospectively reviewed the charts of patients referred to our center since January 2004, and collected all clinical information available at their first visit. We assessed mortality to the end of June 2015.

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Objective: To develop a set of recommendations, by consensus of Emergency Medicine experts, on key aspects related to the care of adult patients with acute infection attended in Spanish emergency departments (ED).

Methods: The study was divided into three phases: 1) To design a questionnaire by a coordinating group; 2) To conduct a survey in ED physicians in order to know their opinion on the issues raised by the coordinating group; 3) To develop a number of recommendations based on the responses to the questionnaire and their subsequent discussion.

Results: A group of 28 experts from different Spanish ED, as well as 5 members of the coordinating group, with knowledge and experience in the management of infectious diseases in ED, conducted a round of voting to a questionnaire of 18 issues grouped into three sections: 1) identification and stratification of the severity; 2) diagnosis and treatment; 3) management.

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Background: Age- and sex-specific differences exist in the treatment and outcome of ST-elevation myocardial infarction (STEMI). We sought to describe age- and sex-matched contemporary trends of in-hospital management and outcome of patients with STEMI.

Methods And Results: We analyzed data from 5 Italian nationwide prospective registries, conducted between 2001 and 2014, including consecutive patients with STEMI.

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After acute coronary syndromes (ACS), the so-called dual antiplatelet therapy (DAPT), which usually consists of low-dose of aspirin in combination with a thienopyridine (clopidogrel, prasugrel) or with a cyclopentyltriazolopyrimidine (ticagrelor), reduces the risk of ischemic events. Ticagrelor, un particular, is an effective drug as it isn' a prodrug, doesn't require metabolic activation and demonstrates a rapid onset and faster offset of action. Areas covered: This article evaluates the pharmacokinetics, efficacy, safety and tolerability of ticagrelor during DAPT after ACS and its potential use beyond the canonical twelve months after PCI.

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Antimicrobial resistance increases it health, social and economic impact. in all areas (state, regional and local), initiatives to try to contain the problem of resistance arise. In the update of this year 2016, we study microbiological, epidemiological and clinical aspects of multi-resistant bacteria, as well as resources for therapeutic approach, from ancient to modern drugs from therapeutic combinations to optimization Stewardship programs.

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We studied in vitro ceftaroline combinations against 61 meticillin-resistant Staphylococcus aureus isolates; 18 of them were also resistant to linezolid, using overlapping E-test method. Daptomycin-ceftaroline combination obtained lower fractional inhibitory concentration values, in comparison with those including vancomycin or linezolid against meticillin-resistant S. aureus (P<0.

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Background: Intracardiac myxomas are frequent benign tumors of the heart and typically localize in the left atri- um and interatrial septum. When myxomas generate at other sites, they are designated as atypical. Mutations in the PRKAR1A gene (a tumor suppressor gene that encodes a protein kinase A [PKA] regulatory 1-alpha subunit) have been identified in both syndromic and non-syndromic cardiac atypical myxomas.

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The Alere i Influenza A&B assay is a novel isothermal nucleic acid amplification assay capable of detecting and differentiating influenza A and B viruses in approximately 15 min with minimal hands-on time. This study was conducted in order to assess the performance of the Alere i Influenza A&B assay compared to molecular techniques, considered to be gold standard methods, to evaluate the results. A total of 119 nasopharyngeal swabs collected from inpatients with influenza-like illness were included in the study using both archived and prospectively collected samples from adults and children.

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Infectious disease remains current worldwide. During the second half of 2014 an outbreak of ebolavirus hit West Africa with implications in the rest of the world. In fact, Spain declared the first imported case of this infection.

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Aims: Despite advances in the management of patients with acute coronary syndrome (ACS), cardiogenic shock (CS) remains the leading cause of death in these patients. We describe the evolution of clinical characteristics, in-hospital management, and outcome of patients with CS complicating ACS.

Methods And Results: We analysed data from five Italian nationwide prospective registries, conducted between 2001 and 2014, including consecutive patients with ACS.

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Porous silicon (PSi) non-symmetric multi-layers are modified by organic molecular beam deposition of an organic semiconductor, namely the N,N'-1H,1H-perfluorobutyldicyanoperylene-carboxydi-imide (PDIF-CN2). Joule evaporation of PDIF-CN2 into the PSi sponge-like matrix not only improves but also adds transducing skills, making this solid-state device a dual signal sensor for chemical monitoring. PDIF-CN2 modified PSi optical microcavities show an increase of about five orders of magnitude in electric current with respect to the same bare device.

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Objective: To describe the evolution of clinical characteristics, in-hospital management and early outcome of elderly patients with non-ST elevation myocardial infarction (NSTEMI).

Methods: We analysed data from five consecutive Italian nationwide registries, conducted between 2001 and 2010, including patients with acute coronary syndromes admitted to cardiac care units (CCUs).

Results: Of 10 983 patients with NSTEMI enrolled in the 5 surveys, 4350 (39.

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The so-called proximity effect is the manifestation, across an interface, of the systematic competition between magnetic order and superconductivity. This phenomenon has been well documented and understood for conventional superconductors coupled with metallic ferromagnets; however it is still less known for oxide materials, where much higher critical temperatures are offered by copper oxide-based superconductors. Here we show that, even in the absence of direct Cu-O-Mn covalent bonding, the interfacial CuO2 planes of superconducting La(1.

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