6,465 results on '"Citro A"'
Search Results
202. On the Stability of Subsonic Impinging Jets
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Camerlengo, Gabriele, Sesterhenn, Jörn, Giannetti, Flavio, Citro, Vincenzo, Luchini, Paolo, Chaari, Fakher, Series Editor, Haddar, Mohamed, Series Editor, Kwon, Young W., Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Carcaterra, Antonio, editor, Paolone, Achille, editor, and Graziani, Giorgio, editor
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- 2020
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203. Apocalisse. Li hanno lasciati morire
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Massimo Citro Della Riva
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- 2022
204. What is new in valvular heart disease ESC Guidelines 2021?
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Giuseppe Iuliano and Rodolfo Citro
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guidelines ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2021
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205. Adjoint-based sensitivity analysis of periodic orbits by the Fourier–Galerkin method
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Sierra, J., Jolivet, P., Giannetti, F., and Citro, V.
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- 2021
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206. Spin pumping and measurement of spin currents in optical superlattices
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Schweizer, Christian, Lohse, Michael, Citro, Roberta, and Bloch, Immanuel
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Condensed Matter - Quantum Gases - Abstract
We report on the experimental implementation of a spin pump with ultracold bosonic atoms in an optical superlattice. In the limit of isolated double wells it represents a 1D dynamical version of the quantum spin Hall effect. Starting from an antiferromagnetically ordered spin chain, we periodically vary the underlying spin-dependent Hamiltonian and observe a spin current without charge transport. We demonstrate a novel detection method to measure spin currents in optical lattices via superexchange oscillations emerging after a projection onto static double wells. Furthermore, we directly verify spin transport through in-situ measurements of the spins' center of mass displacement.
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- 2016
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207. Universal transport dynamics in a quenched tunnel-coupled Luttinger liquid
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Gambetta, F. M., Cavaliere, F., Citro, R., and Sassetti, M.
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Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Quantum Gases - Abstract
The transport dynamics of a quenched Luttinger liquid tunnel-coupled to a fermionic reservoir is investigated. In the transient dynamics, we show that for a sudden quench of the electron interaction universal power-law decay in time of the tunneling current occurs, ascribed to the presence of entangled compound excitations created by the quench. In sharp contrast to the usual non universal power-law behavior of a zero-temperature non-quenched Luttinger liquid, the steady state tunneling current is ohmic and can be explained in terms of an effective quench-activated heating of the system. Our study unveils an unconventional dynamics for a quenched Luttinger liquid that could be identified in quenched cold Fermi gases., Comment: 9 pages, 4 figures
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- 2016
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208. Inferring the star formation histories of the most massive and passive early-type galaxies at z<0.3
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Citro, Annalisa, Pozzetti, Lucia, Moresco, Michele, and Cimatti, Andrea
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Astrophysics - Astrophysics of Galaxies - Abstract
Massive galaxies are key probes to understand how the baryonic matter evolves within the dark matter halos. We use the "archaeological" approach to infer the stellar population properties and star formation histories of the most massive (M > 10^10.75 Msun) and passive early-type galaxies (ETGs) at 0 < z < 0.3, based on stacked, high signal to noise ratio (SNR), Sloan Digital Sky Survey spectra. We exploit the information present in the full-spectrum by means of the STARLIGHT public code to retrieve the ETGs evolutionary properties, such as age, metallicity and star formation history. We find that the stellar metallicities are slightly supersolar (Z ~ 0.027 +/- 0.002) and do not depend on redshift. Dust extinction is very low, with a mean of Av ~ 0.08 +/- 0.03 mag. The ETGs show an anti-hierarchical evolution (downsizing) where more massive galaxies are older. The SFHs can be approximated by a parametric function of the form SFR(t) \propto \tau^-(c+1) t^(c) exp(-t/\tau), with typical short e-folding times of \tau ~ 0.6 - 0.8 Gyr (and a dispersion of +/- 0.1 Gyr) and c ~ 0.1 (and a dispersion of +/- 0.05). The inferred SFHs are also used to place constraints on the properties and evolution of the ETG progenitors. In particular, the ETGs of our samples should have formed most stars through a phase of vigorous star formation (SFRs > 350-400 Msun yr^-1) at z ~ 4 - 5, and are quiescent by z ~ 1.5 -2. Our results represent an attempt to demonstrate quantitatively the evolutionary link between the most massive ETGs at z < 0.3 and the properties of suitable progenitors at high redshifts, also showing that the full-spectrum fitting is a powerful approach to reconstruct the star formation histories of massive quiescent galaxies., Comment: 25 pages, 25 figures, 4 tables. Accepted for publication in Astronomy & Astrophysics
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- 2016
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209. Stability mechanisms of high current transport in iron-chalcogenides superconducting films
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Leo, Antonio, Grimaldi, Gaia, Marra, Pasquale, Citro, Roberta, Avitabile, Francesco, Guarino, Anita, Bellingeri, Emilio, Kawale, Shrikant, Ferdeghini, Carlo, Nigro, Angela, and Pace, Sandro
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Condensed Matter - Superconductivity - Abstract
The improvement in the fabrication techniques of iron-based superconductors have made these materials real competitors of high temperature superconductors and MgB$_2$. In particular, iron-chalcogenides have proved to be the most promising for the realization of high current carrying tapes. But their use on a large scale cannot be achieved without the understanding of the current stability mechanisms in these compounds. Indeed, we have recently observed the presence of flux flow instabilities features in Fe(Se,Te) thin films grown on CaF$_2$. Here we present the results of current-voltage characterizations at different temperatures and applied magnetic fields on Fe(Se,Te) microbridges grown on CaF$_2$. These results will be analyzed from the point of view of the most validated models with the aim to identify the nature of the flux flow instabilities features (i.e., thermal or electronic), in order to give a further advance to the high current carrying capability of iron-chalcogenide superconductors., Comment: 4 pages, 3 figures
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- 2016
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210. TensorFlow: Large-Scale Machine Learning on Heterogeneous Distributed Systems
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Abadi, Martín, Agarwal, Ashish, Barham, Paul, Brevdo, Eugene, Chen, Zhifeng, Citro, Craig, Corrado, Greg S., Davis, Andy, Dean, Jeffrey, Devin, Matthieu, Ghemawat, Sanjay, Goodfellow, Ian, Harp, Andrew, Irving, Geoffrey, Isard, Michael, Jia, Yangqing, Jozefowicz, Rafal, Kaiser, Lukasz, Kudlur, Manjunath, Levenberg, Josh, Mane, Dan, Monga, Rajat, Moore, Sherry, Murray, Derek, Olah, Chris, Schuster, Mike, Shlens, Jonathon, Steiner, Benoit, Sutskever, Ilya, Talwar, Kunal, Tucker, Paul, Vanhoucke, Vincent, Vasudevan, Vijay, Viegas, Fernanda, Vinyals, Oriol, Warden, Pete, Wattenberg, Martin, Wicke, Martin, Yu, Yuan, and Zheng, Xiaoqiang
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Computer Science - Distributed, Parallel, and Cluster Computing ,Computer Science - Learning - Abstract
TensorFlow is an interface for expressing machine learning algorithms, and an implementation for executing such algorithms. A computation expressed using TensorFlow can be executed with little or no change on a wide variety of heterogeneous systems, ranging from mobile devices such as phones and tablets up to large-scale distributed systems of hundreds of machines and thousands of computational devices such as GPU cards. The system is flexible and can be used to express a wide variety of algorithms, including training and inference algorithms for deep neural network models, and it has been used for conducting research and for deploying machine learning systems into production across more than a dozen areas of computer science and other fields, including speech recognition, computer vision, robotics, information retrieval, natural language processing, geographic information extraction, and computational drug discovery. This paper describes the TensorFlow interface and an implementation of that interface that we have built at Google. The TensorFlow API and a reference implementation were released as an open-source package under the Apache 2.0 license in November, 2015 and are available at www.tensorflow.org., Comment: Version 2 updates only the metadata, to correct the formatting of Mart\'in Abadi's name
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- 2016
211. Incommensurate phases of a bosonic two-leg ladder under a flux
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Orignac, Edmond, Citro, Roberta, Di Dio, Mario, De Palo, Stefania, and Chiofalo, Maria-Luisa
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Condensed Matter - Quantum Gases ,Condensed Matter - Strongly Correlated Electrons - Abstract
A boson two--leg ladder in the presence of a synthetic magnetic flux is investigated by means of bosonization techniques and Density Matrix Renormalization Group (DMRG). We follow the quantum phase transition from the commensurate Meissner to the incommensurate vortex phase with increasing flux at different fillings. When the applied flux is $\rho \pi$ and close to it, where $\rho$ is the filling per rung, we find a second incommensuration in the vortex state that affects physical observables such as the momentum distribution, the rung-rung correlation function and the spin-spin and charge-charge static structure factors., Comment: 19 pages, 9 EPS figures, RevTeX 4 (v1); 20 pages, 10 EPS figures, improved section on mean-field theory (v2)
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- 2016
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212. A 6% measurement of the Hubble parameter at $z\sim0.45$: direct evidence of the epoch of cosmic re-acceleration
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Moresco, Michele, Pozzetti, Lucia, Cimatti, Andrea, Jimenez, Raul, Maraston, Claudia, Verde, Licia, Thomas, Daniel, Citro, Annalisa, Tojeiro, Rita, and Wilkinson, David
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Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
Deriving the expansion history of the Universe is a major goal of modern cosmology. To date, the most accurate measurements have been obtained with Type Ia Supernovae and Baryon Acoustic Oscillations, providing evidence for the existence of a transition epoch at which the expansion rate changes from decelerated to accelerated. However, these results have been obtained within the framework of specific cosmological models that must be implicitly or explicitly assumed in the measurement. It is therefore crucial to obtain measurements of the accelerated expansion of the Universe independently of assumptions on cosmological models. Here we exploit the unprecedented statistics provided by the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 9 to provide new constraints on the Hubble parameter $H(z)$ using the em cosmic chronometers approach. We extract a sample of more than 130000 of the most massive and passively evolving galaxies, obtaining five new cosmology-independent $H(z)$ measurements in the redshift range $0.3
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- 2016
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213. Systematic total arch replacement with thoraflex hybrid graft in acute type A aortic dissection: A single centre experience
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Pierpaolo Chivasso, Generoso Mastrogiovanni, Vito Domenico Bruno, Mario Miele, Mario Colombino, Donato Triggiani, Francesco Cafarelli, Rocco Leone, Felice Rosapepe, Matteo De Martino, Elvira Morena, Ivana Iesu, Rodolfo Citro, Paolo Masiello, and Severino Iesu
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aortic arch surgery ,FET ,frozen elephant trunk ,hybrid arch surgery ,acute type A aortic dissection ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
IntroductionIn the last two decades, a more aggressive approach has been encouraged to treat patients with acute type A aortic dissection (ATAAD), extending the repair to the aortic arch and proximal descending thoracic aorta with the frozen elephant trunk (FET) implantation. Here, we report our single-centre experience with the FET technique for the systematic treatment of emergency type A aortic dissection.Materials and methodsBetween December 2017 and January 2022, 69 consecutive patients were admitted with ATAAD; of those, 66 patients (62.9 ± 10.2 years of age, 81.8% men) underwent emergency hybrid aortic arch and FET repair with the multibranched Thoraflex hybrid graft and were enrolled in the study. Primary endpoints were 30 days- and in-hospital mortality. Secondary endpoints were postoperative morbidity and follow-up survival. To better clarify the impact of age on surgical outcomes, we have divided the study population into two groups: group A for patients
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- 2022
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214. Narrative medicine to investigate the quality of life and emotional impact of inherited retinal disorders through the perspectives of patients, caregivers and clinicians: an Italian multicentre project
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Vittoria Murro, Dario Pasquale Mucciolo, Alessandra Fiorencis, Francesca Simonelli, Valentina Di Iorio, Andrea Sodi, Cristiana Marchese, Benedetto Falsini, Giacomo Bacci, Giancarlo Iarossi, Dario Giorgio, Giorgio Placidi, Assia Andrao, Manar Aoun, Giovanni Bosco Vitiello, Amelia Citro, Simona De Simone, Irene De Rienzo, Natalia Filimonova, Stefania Fortini, Ilaria Passerini, and Simona Turco
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Medicine - Abstract
Objectives Although inherited retinal disorders (IRDs) related to the gene encoding the retinal pigment epithelium 65kD protein (RPE65) significantly impact the vision-related quality of life (VRQoL), their emotional and social aspects remain poorly investigated in Italy. Narrative Medicine (NM) reveals the more intimate aspects of the illness experience, providing insights into clinical practice.Design and setting This NM project was conducted in Italy between July and December 2020 and involved five eye clinics specialised in IRDs. Illness plots and parallel charts, together with a sociodemographic survey, were collected through the project’s website; remote in-depth interviews were also conducted. Narratives and interviews were analysed through NVivo software and interpretive coding.Participants 3 paediatric and 5 adult patients and eight caregivers participated in the project; 11 retinologists globally wrote 27 parallel charts; 5 professionals from hospital-based multidisciplinary teams and one patient association member were interviewed.Results Findings confirmed that RPE65-related IRDs impact VRQoL in terms of activities and mobility limitations. The emotional aspects emerged as crucial in the clinical encounter and as informative on IRD management challenges and real-life experiences, while psychological support was addressed as critical from clinical diagnosis throughout the care pathway for both patients and caregivers; the need for an IRDs ‘culture’ emerged to acknowledge these conditions, and therefore, promoting diversity within society.Conclusions The project was the first effort to investigate the impact of RPE65-related IRDs on the illness experience through NM, concomitantly addressing the perspectives of paediatric and adult patients, caregivers and healthcare professionals and provided preliminary insights for the knowledge of RPE65-related IRDs and the clinical practice.
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- 2022
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215. Regenerative medicine technologies applied to transplant medicine. An update
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Astgik Petrosyan, Filippo Montali, Andrea Peloso, Antonio Citro, Lori N. Byers, Catherine La Pointe, Mara Suleiman, Alice Marchetti, Eoin P. Mcneill, Allison L Speer, Wai Hoe Ng, Xi Ren, Benedetta Bussolati, Laura Perin, Paolo Di Nardo, Vincenzo Cardinale, Jerome Duisit, Alexandra Rose Monetti, John Richard Savino, Amish Asthana, and Giuseppe Orlando
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regenerative medicine ,transplant medicine ,cell therapeutics ,organ regeneration ,tissue engineering ,Biotechnology ,TP248.13-248.65 - Abstract
Regenerative medicine (RM) is changing how we think and practice transplant medicine. In regenerative medicine, the aim is to develop and employ methods to regenerate, restore or replace damaged/diseased tissues or organs. Regenerative medicine investigates using tools such as novel technologies or techniques, extracellular vesicles, cell-based therapies, and tissue-engineered constructs to design effective patient-specific treatments. This review illustrates current advancements in regenerative medicine that may pertain to transplant medicine. We highlight progress made and various tools designed and employed specifically for each tissue or organ, such as the kidney, heart, liver, lung, vasculature, gastrointestinal tract, and pancreas. By combing both fields of transplant and regenerative medicine, we can harbor a successful collaboration that would be beneficial and efficacious for the repair and design of de novo engineered whole organs for transplantations.
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- 2022
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216. Normal state electronic properties of LaO$_{1-x}$F$_{x}$BiS$_{2}$ superconductors
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Flores, J. D. Querales, Ventura, C. I., Citro, R., and Rodríguez-Núñez, J. J.
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Condensed Matter - Strongly Correlated Electrons - Abstract
A good description of the electronic structure of BiS$_{2}$-based superconductors is essential to understand their phase diagram, normal state and superconducting properties. To describe the first reports of normal state electronic structure features from angle resolved photoemission spectroscopy (ARPES) in LaO$_{1-x}$F$_{x}$BiS$_{2}$, we used a minimal microscopic model to study their low energy properties. It includes the two effective tight-binding bands proposed by Usui et al [Phys.Rev.B 86, 220501(R)(2012)], and we added moderate intra- and inter-orbital electron correlations related to Bi-($p_{Y}$, $p_{X}$) and S-($p_{Y}$, $p_{X}$) orbitals. We calculated the electron Green's functions using their equations of motion, which we decoupled in second-order of perturbations on the correlations. We determined the normal state spectral density function and total density of states for LaO$_{1-x}$F$_{x}$BiS$_{2}$, focusing on the description of the k-dependence, effect of doping, and the prediction of the temperature dependence of spectral properties. Including moderate electron correlations, improves the description of the few experimental ARPES and soft X-ray photoemission data available for LaO$_{1-x}$F$_{x}$BiS$_{2}$. Our analytical approximation enabled us to calculate the spectral density around the conduction band minimum at $\vec{k}_{0}=(0.45\pi,0.45\pi)$, and to predict the temperature dependence of the spectral properties at different BZ points, which might be verified by temperature dependent ARPES., Comment: 9 figures. Manuscript accepted in Physica B: Condensed Matter on Jan. 25, 2016
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- 2015
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217. COVID-19: S-Peptide RBD 484–508 Induces IFN-γ T-Cell Response in Naïve-to-Infection and Unvaccinated Subjects with Close Contact with SARS-CoV-2-Positive Patients
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Michela Murdocca, Gennaro Citro, Eleonora Centanini, Rosalinda Giannini, Andrea Latini, Federica Centofanti, Eva Piano Mortari, Dario Cocciadiferro, Antonio Novelli, Sergio Bernardini, Giuseppe Novelli, and Federica Sangiuolo
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SARS-CoV-2 ,peptide ,IFN-γ ,pseudovirus ,Microbiology ,QR1-502 - Abstract
Despite the availability on the market of different anti-SARS-CoV-2 vaccines, there are still unanswered questions on whether they can stimulate long-lasting protection. A deep understanding of adaptive immune response to SARS-CoV-2 is important for optimizing both vaccine development and pandemic control measures. Among cytokines secreted by lymphocytes in response to viral infection, IFN-γ plays a pivotal role both in innate and adaptive immunity. In this study, we report on 28 naïve-to-SARS-Cov-2-infection and unvaccinated subjects, having reported a close and prolonged contact with COVID-19-positive patients. Samples were tested for defective genetic variants in interferon pathway genes by whole exome sequencing and anti-IFN autoantibodies production was investigated. Subject T-cells were cultured and infected with pseudotype particles bearing the S proteins and in parallel stimulated with two S-peptides designed on the RBD region of the spike protein. Our results showed that one of these peptides, RBD 484–508, induces a significant increase in IFN-γ gene expression and protein production in T-cells, comparable to those obtained in cells infected by SARS-CoV-2 pseudovirus. This work deepens our understanding of immune response and highlights the selected peptide as a reasonable approach to induce broad, potent, and variant concern-independent T-cell responses.
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- 2023
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218. Regeneratively speaking: Reflections on organ transplantation and beta cell replacement in the regenerative medicine era
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Aziz, Justine M., primary, Grisales, Paul A., additional, Savino, John R., additional, Byers, Lori Nicole, additional, Citro, Antonio, additional, Peloso, Andrea, additional, Asthana, Amish, additional, and Orlando, Giuseppe, additional
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- 2022
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219. Fostering Statistical Rigor forEvidence-Based Policy at the National Academies of Sciences, Engineering, and Medicine
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Citro, Constance F., primary, Cohen, Michael L., additional, and Coggeshall, Porter E., additional
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- 2022
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220. Contributors
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Alexander, Michael, primary, Asthana, Amish, additional, Aziz, Justine M., additional, Balamurugan, Appakalai N., additional, Bottino, Rita, additional, Byers, Lori Nicole, additional, Citro, Antonio, additional, Cowan, Peter J., additional, Damyar, Kimia, additional, Fisher, Robert A., additional, Friend, Peter J., additional, Good, Adam, additional, Grisales, Paul A., additional, Hawthorne, Wayne J., additional, Hui, Aaron, additional, Imagawa, David, additional, Kelly, Amy C., additional, Kim, Jong-Min, additional, Kodipad, Ahad Ahmed, additional, Lakey, Jonathan R.T., additional, Loudovaris, Thomas, additional, Luong, Colleen, additional, Mokshagundam, Sri Prakash L., additional, Narayanan, Siddharth, additional, Nathan, Jaimie D., additional, Ogbemudia, Ann Etohan, additional, Oniscu, Gabriel, additional, Orlando, Giuseppe, additional, Papas, Klearchos K., additional, Park, Chung-Gyu, additional, Peloso, Andrea, additional, Perelman, Lev T., additional, Pettinato, Giuseppe, additional, Pleass, Henry, additional, Rilo, Horacio, additional, Samaga, Krishna Kumar, additional, Savino, John R., additional, Suszynski, Thomas M., additional, Sutherland, Andrew I., additional, Wells, Alicia, additional, Whaley, David, additional, and Xu, Ivana, additional
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- 2022
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221. Prognostic impact of acute pulmonary triggers in patients with takotsubo syndrome: new insights from the International Takotsubo Registry
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Ken Kato, Victoria L. Cammann, L. Christian Napp, Konrad A. Szawan, Jozef Micek, Sara Dreiding, Rena A. Levinson, Vanya Petkova, Michael Würdinger, Alexandru Patrascu, Rafael Sumalinog, Sebastiano Gili, Christian F. Clarenbach, Malcolm Kohler, Manfred Wischnewsky, Rodolfo Citro, Carmine Vecchione, Eduardo Bossone, Michael Neuhaus, Jennifer Franke, Benjamin Meder, Milosz Jaguszewski, Michel Noutsias, Maike Knorr, Susanne Heiner, Fabrizio D'Ascenzo, Wolfgang Dichtl, Christof Burgdorf, Behrouz Kherad, Carsten Tschöpe, Annahita Sarcon, Jerold Shinbane, Lawrence Rajan, Guido Michels, Roman Pfister, Alessandro Cuneo, Claudius Jacobshagen, Mahir Karakas, Wolfgang Koenig, Alexander Pott, Philippe Meyer, Marco Roffi, Adrian Banning, Mathias Wolfrum, Florim Cuculi, Richard Kobza, Thomas A. Fischer, Tuija Vasankari, K.E. Juhani Airaksinen, Monika Budnik, Rafal Dworakowski, Philip MacCarthy, Christoph Kaiser, Stefan Osswald, Leonarda Galiuto, Christina Chan, Paul Bridgman, Daniel Beug, Clément Delmas, Olivier Lairez, Ekaterina Gilyarova, Alexandra Shilova, Mikhail Gilyarov, Ibrahim El‐Battrawy, Ibrahim Akin, Martin Kozel, Petr Tousek, David E. Winchester, Jan Galuszka, Christian Ukena, Gregor Poglajen, Pedro Carrilho‐Ferreira, Christian Hauck, Carla Paolini, Claudio Bilato, Masanori Sano, Iwao Ishibashi, Masayuki Takahara, Toshiharu Himi, Yoshio Kobayashi, Abhiram Prasad, Charanjit S. Rihal, Kan Liu, P. Christian Schulze, Matteo Bianco, Lucas Jörg, Hans Rickli, Gonçalo Pestana, Thanh H. Nguyen, Michael Böhm, Lars S. Maier, Fausto J. Pinto, Petr Widimský, Stephan B. Felix, Grzegorz Opolski, Ruediger C. Braun‐Dullaeus, Wolfgang Rottbauer, Gerd Hasenfuß, Burkert M. Pieske, Heribert Schunkert, Martin Borggrefe, Holger Thiele, Johann Bauersachs, Hugo A. Katus, John D. Horowitz, Carlo Di Mario, Thomas Münzel, Filippo Crea, Jeroen J. Bax, Thomas F. Lüscher, Frank Ruschitzka, Jelena R. Ghadri, and Christian Templin
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Takotsubo syndrome ,Broken heart syndrome ,Outcome ,Acute respiratory insufficiency ,Chronic obstructive pulmonary disease ,InterTAK Registry ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Aims Acute pulmonary disorders are known physical triggers of takotsubo syndrome (TTS). This study aimed to investigate prevalence of acute pulmonary triggers in patients with TTS and their impact on outcomes. Methods and results Patients with TTS were enrolled from the International Takotsubo Registry and screened for triggering factors and comorbidities. Patients were categorized into three groups (acute pulmonary trigger, chronic lung disease, and no lung disease) to compare clinical characteristics and outcomes. Of the 1670 included patients with TTS, 123 (7%) were identified with an acute pulmonary trigger, and 194 (12%) had a known history of chronic lung disease. The incidence of cardiogenic shock was highest in patients with an acute pulmonary trigger compared with those with chronic lung disease or without lung disease (17% vs. 10% vs. 9%, P = 0.017). In‐hospital mortality was also higher in patients with an acute pulmonary trigger than in the other two groups, although not significantly (5.7% vs. 1.5% vs. 4.2%, P = 0.13). Survival analysis demonstrated that patients with an acute pulmonary trigger had the worst long‐term outcome (P = 0.002). The presence of an acute pulmonary trigger was independently associated with worse long‐term mortality (hazard ratio 2.12, 95% confidence interval 1.33–3.38; P = 0.002). Conclusions The present study demonstrates that TTS is related to acute pulmonary triggers in 7% of all TTS patients, which accounts for 21% of patients with physical triggers. The presence of acute pulmonary trigger is associated with a severe in‐hospital course and a worse long‐term outcome.
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- 2021
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222. Cardiac troponin elevation and mortality in takotsubo syndrome: New insights from the international takotsubo registry.
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Stähli, Barbara E., Schindler, Matthias, Schweiger, Victor, Cammann, Victoria L., Szawan, Konrad A., Niederseer, David, Würdinger, Michael, Schönberger, Alexander, Schönberger, Maximilian, Koleva, Iva, Mercier, Julien C., Petkova, Vanya, Mayer, Silvia, Citro, Rodolfo, Vecchione, Carmine, Bossone, Eduardo, Gili, Sebastiano, Neuhaus, Michael, Franke, Jennifer, and Meder, Benjamin
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Background: The clinical relevance of cardiac troponin (cTn) elevation in takotsubo syndrome (TTS) remains uncertain. The present study sought to investigate the role of cardiac troponin (cTn) elevations in mortality prediction of patients with Takotsubo syndrome (TTS). Methods: Patients enrolled in the International Takotsubo (InterTAK) Registry from January 2011 to February 2020 with available data on peak cTn levels were included in the analysis. Peak cTn levels during the index hospitalization were used to define clinically relevant myocardial injury. The threshold at which clinically relevant myocardial injury drives mortality at 1 year was identified using restricted cubic spline analysis. Results: Out of 2′938 patients, 222 (7.6%) patients died during 1‐year follow‐up. A more than 28.8‐fold increase of cTn above the upper reference limit was identified as threshold for clinically relevant myocardial injury. The presence of clinically relevant myocardial injury was significantly associated with an increased risk of mortality at 5 years (adjusted HR 1.58, 95% CI 1.18–2.12, p =.002). Clinically relevant myocardial injury was related to an increased 5‐year mortality risk in patients with apical TTS (adjusted HR 1.57, 95% CI 1.21–2.03, p =.001), in presence of physical stressors (adjusted HR 1.60, 95% CI 1.22–2.11, p =.001), and in absence of emotional stressors (adjusted HR 1.49, 95% CI, 1.17–1.89, p =.001). Conclusion: This study for the first time determined a troponin threshold for the identification of TTS patients at excess risk of mortality. These findings advance risk stratification in TTS and assist in identifying patients in need for close monitoring and follow‐up. [ABSTRACT FROM AUTHOR]
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- 2024
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223. Pathophysiology of Takotsubo Syndrome: JACC State-of-the-Art Review
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Lyon, Alexander R., Citro, Rodolfo, Schneider, Birke, Morel, Olivier, Ghadri, Jelena R., Templin, Christian, and Omerovic, Elmir
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- 2021
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224. Predictors of outcome in patients with de novo diagnosis of heart failure with reduced ejection fraction: Role of combined myocardial and lung Iodine-123 Meta-Iodobenzylguanidine imaging
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Silverio, Angelo, Polito, Maria Vincenza, Pace, Leonardo, D’Auria, Federica, Vitulano, Gennaro, Scarano, Massimo, Citro, Rodolfo, Galasso, Gennaro, and Piscione, Federico
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- 2021
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225. Role of multimodality imaging in evaluation of cardiovascular involvement in COVID-19
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Citro, Rodolfo, Pontone, Gianluca, Bellino, Michele, Silverio, Angelo, Iuliano, Giuseppe, Baggiano, Andrea, Manka, Robert, Iesu, Severino, Vecchione, Carmine, Asch, Federico Miguel, Ghadri, Jelena Rima, and Templin, Christian
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- 2021
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226. Movement disorders following mechanical thrombectomy resulting in ischemic lesions of the basal ganglia: An emerging clinical entity
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Rigon, Leonardo, Genovese, Danilo, Piano, Carla, Brunetti, Valerio, Guglielmi, Valeria, Cimmino, Angelo Tiziano, Scala, Irene, Citro, Salvatore, Bentivoglio, Anna Rita, Rollo, Eleonora, Di Iorio, Riccardo, Broccolini, Aldobrando, Morosetti, Roberta, Monforte, Mauro, Frisullo, Giovanni, Caliandro, Pietro, Pedicelli, Alessandro, Caricato, Anselmo, Masone, Giovanna, Calabresi, Paolo, Della Marca, Giacomo, Bentivoglio, Anna Rita (ORCID:0000-0002-9663-095X), Broccolini, Aldobrando (ORCID:0000-0001-8295-9271), Caliandro, Pietro (ORCID:0000-0002-1190-4879), Pedicelli, Alessandro (ORCID:0000-0002-2558-8838), Caricato, Anselmo (ORCID:0000-0001-5929-120X), Calabresi, Paolo (ORCID:0000-0003-0326-5509), Marca, Giacomo Della (ORCID:0000-0001-6914-799X), Rigon, Leonardo, Genovese, Danilo, Piano, Carla, Brunetti, Valerio, Guglielmi, Valeria, Cimmino, Angelo Tiziano, Scala, Irene, Citro, Salvatore, Bentivoglio, Anna Rita, Rollo, Eleonora, Di Iorio, Riccardo, Broccolini, Aldobrando, Morosetti, Roberta, Monforte, Mauro, Frisullo, Giovanni, Caliandro, Pietro, Pedicelli, Alessandro, Caricato, Anselmo, Masone, Giovanna, Calabresi, Paolo, Della Marca, Giacomo, Bentivoglio, Anna Rita (ORCID:0000-0002-9663-095X), Broccolini, Aldobrando (ORCID:0000-0001-8295-9271), Caliandro, Pietro (ORCID:0000-0002-1190-4879), Pedicelli, Alessandro (ORCID:0000-0002-2558-8838), Caricato, Anselmo (ORCID:0000-0001-5929-120X), Calabresi, Paolo (ORCID:0000-0003-0326-5509), and Marca, Giacomo Della (ORCID:0000-0001-6914-799X)
- Abstract
Background and purposePost-stroke movement disorders (PMDs) following ischemic lesions of the basal ganglia (BG) are a known entity, but data regarding their incidence are lacking. Ischemic strokes secondary to proximal middle cerebral artery (MCA) occlusion treated with thrombectomy represent a model of selective damage to the BG. The aim of this study was to assess the prevalence and features of movement disorders after selective BG ischemia in patients with successfully reperfused acute ischemic stroke (AIS).MethodsWe enrolled 64 consecutive subjects with AIS due to proximal MCA occlusion treated with thrombectomy. Patients were clinically evaluated by a movement disorders specialist for PMDs onset at baseline, and after 6 and 12 months.ResultsNone of the patients showed an identifiable movement disorder in the subacute phase of the stroke. At 6 and 12 months, respectively, 7/25 (28%) and 7/13 (53.8%) evaluated patients developed PMDs. The clinical spectrum of PMDs encompassed parkinsonism, dystonia and chorea, either isolated or combined. In most patients, symptoms were contralateral to the lesion, although a subset of patients presented with bilateral involvement and prominent axial signs.ConclusionPost-stroke movement disorders are not uncommon in long-term follow-up of successfully reperfused AIS. Follow-up conducted by a multidisciplinary team is strongly advisable in patients with selective lesions of the BG after AIS, even if asymptomatic at discharge.
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- 2024
227. The UBC9/SUMO pathway affects E-cadherin cleavage in HPV-positive head and neck cancer
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Maria Elisa Sabatini, Micaela Compagnoni, Fausto Maffini, Claudia Miccolo, Fabio Pagni, Mariano Lombardi, Virginia Brambilla, Daniela Lepanto, Marta Tagliabue, Mohssen Ansarin, Simona Citro, and Susanna Chiocca
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head and neck cancer ,head and neck squamous cell carcinoma ,HPV ,SUMO ,Ubc9 ,E-cadherin ,Biology (General) ,QH301-705.5 - Abstract
Functional loss of E-cadherin is frequent during tumor progression and occurs through a variety of mechanisms, including proteolytic cleavage. E-cadherin downregulation leads to the conversion of a more malignant phenotype promoting Epithelial to Mesenchymal Transition (EMT). The UBC9/SUMO pathway has been also shown to be involved in the regulation of EMT in different cancers. Here we found an increased expression of UBC9 in the progression of Head and Neck Cancer (HNC) and uncovered a role for UBC9/SUMO in hampering the HPV-mediated E-cadherin cleavage in HNC.
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- 2022
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228. Insights from the EACVI document on multi-modality imaging assessment of native valvular regurgitation: what does it add to the ESC guidelines on the management of valvular heart disease?
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Giuseppe Luliano and Rodolfo Citro
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imaging ,valvular regurgitation ,guideline ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2022
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229. Abstract 15501: Rare Genomic Copy Number Variants Implicate New Candidate Genes for Bicuspid Aortic Valve
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Carlisle, Steven G, Albasha, Hasan, Michelena, Hector I, Sabate-Rotes, Anna, Bianco, Lisa, DeBacker, Julie, Muino Mosquera, Laura, Yetman, Angela T, Bissell, Malenka, Andreassi, Maria Grazia, Foffa, Ilenia, Hui, Dawn, Caffarelli, Anthony D, Kim, Yuli Y, Guo, Dongchuan, Citro, Rodolfo, De Marco, Margot, Tretter, Justin, Hanchard, Neil A, Belmont, John W, McBride, Kim L, Body, Simon C, and Prakash, Siddharth K
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- 2022
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230. Competition between intrinsic and extrinsic effects in the quenching of the superconducting state in FeSeTe thin films
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Leo, Antonio, Marra, Pasquale, Grimaldi, Gaia, Citro, Roberta, Kawale, Shrikant, Bellingeri, Emilio, Ferdeghini, Carlo, Pace, Sandro, and Nigro, Angela
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Condensed Matter - Superconductivity - Abstract
We report the first experimental observation of the quenching of the superconducting state in current-voltage characteristics of an iron-based superconductor, namely, in FeSeTe thin films. Based on available theoretical models, our analysis suggests the presence of an intrinsic flux-flow electronic instability along with non-negligible extrinsic thermal effects. The coexistence and competition of these two mechanisms classify the observed instability as halfway between those of low-temperature and of high-temperature superconductors, where thermal effects are respectively largely negligible or predominant., Comment: 7 pages, 5 figures, fixed typos
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- 2015
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231. Old age and super-solar metallicity in a massive z~1.4 early-type galaxy from VLT/X-Shooter spectroscopy
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Lonoce, Ilaria, Longhetti, Marcella, Maraston, Claudia, Thomas, Daniel, Mancini, Chiara, Cimatti, Andrea, Ciocca, Federica, Citro, Annalisa, Daddi, Emanuele, Alighieri, Sperello di Serego, Gargiulo, Adriana, Maiolino, Roberto, Mannucci, Filippo, Moresco, Michele, Pozzetti, Lucia, Quai, Salvatore, and Saracco, Paolo
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Astrophysics - Astrophysics of Galaxies - Abstract
We present the first estimate of age, stellar metallicity and chemical abundance ratios, for an individual early-type galaxy at high-redshift (z = 1.426) in the COSMOS field. Our analysis is based on observations obtained with the X-Shooter instrument at the VLT, which cover the visual and near infrared spectrum at high (R >5000) spectral resolution. We measure the values of several spectral absorptions tracing chemical species, in particular Magnesium and Iron, besides determining the age-sensitive D4000 break. We compare the measured indices to stellar population models, finding good agreement. We find that our target is an old (t > 3 Gyr), high-metallicity ([Z/H] > 0.5) galaxy which formed its stars at z_{form} > 5 within a short time scale ~0.1 Gyr, as testified by the strong [\alpha/Fe] ratio ( > 0.4), and has passively evolved in the first > 3-4 Gyr of its life. We have verified that this result is robust against the choice and number of fitted spectral features, and stellar population model. The result of an old age and high-metallicity has important implications for galaxy formation and evolution confirming an early and rapid formation of the most massive galaxies in the Universe., Comment: 8 pages, 7 figures, accepted for publication in MNRAS
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- 2015
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232. Signatures of topological phase transitions in Josephson current-phase discontinuities
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Marra, Pasquale, Citro, Roberta, and Braggio, Alessandro
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Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Superconductivity - Abstract
Topological superconductors differ from topologically trivial ones for the presence of topologically protected zero-energy modes. To date, experimental evidence of topological superconductivity in nanostructures has been mainly obtained by measuring the zero-bias conductance peak via tunneling spectroscopy. Here, we propose an alternative and complementary experimental recipe to detect topological phase transitions in these systems. We show in fact that, for a finite-sized system with broken time-reversal symmetry, discontinuities in the Josephson current-phase relation correspond to the presence of zero-energy modes and to a change in the fermion parity of the groundstate. Such discontinuities can be experimentally revealed by a characteristic temperature dependence of the current, and can be related to a finite anomalous current at zero phase in systems with broken phase-inversion symmetry., Comment: 11 pages, 5 figures
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- 2015
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233. Quantum Waveguide Theory of the Josephson effect in Multiband Superconductors
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Nappi, Ciro, Romeo, Francesco, Sarnelli, Ettore, and Citro, Roberta
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Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Superconductivity - Abstract
We formulate a quantum waveguide theory of the Josephson effect in multiband superconductors, with special emphasis on iron-based materials. By generalizing the boundary conditions of the scattering problem, we first determine the Andreev levels spectrum and then derive an explicit expression for the Josephson current which generalizes the formula of the single band case. In deriving the results, we provide a second quantization field theory allowing to evaluate the current-phase relation and the Josephson current fluctuations in multiband systems. We present results for two different order parameter symmetries,namely $s_\pm$ and $s_{++}$, which are relevant in multiband systems. The obtained results show that the $s_\pm$ symmetry can support $\pi$ states which are absent in the $s_{++}$ case. We also argue a certain fragility of the Josephson current against phase fluctuations in the $s_{++}$ case. The temperature dependence of the Josephson critical current is also analyzed and we find, for both the order parameter symmetries, remarkable violations of the Ambegaokar-Baratoff relation. The results are relevant in view of possible experiments aimed at investigating the order parameter symmetry of multiband superconductors using mesoscopic Josephson junctions., Comment: 10 pages, 5 figures
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- 2015
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234. Persisting Meissner state and incommensurate phases of hard-core boson ladders in a flux
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Di Dio, Mario, De Palo, Stefania, Orignac, Edmond, Citro, Roberta, and Chiofalo, Maria Luisa
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Condensed Matter - Quantum Gases - Abstract
The phase diagram of a half-filled hard core boson two-leg ladder in a flux is investigated by means of numerical simulations based on the Density Matrix Renormalization Group (DMRG) algorithm and bosonization. We calculate experimentally accessible observables such as the momentum distribution, as well as rung current, density wave and bond-order wave correlation functions, allowing us to identify the Mott Meissner and Mott Vortex states. We follow the transition from commensurate Meissner to incommensurate Vortex state at increasing interchain hopping till the critical value [Piraud et al. Phys. Rev. B v. 91, p. 140406 (2015)] above which the Meissner state is stable at any flux. For flux close to $\pi$, and below the critical hopping, we observe the formation of a second incommensuration in the Mott Vortex state that could be detectable in current experiments., Comment: RevTeX 4, 5 pages + 8 pages supplemental, 6 EPS figures; (v2) references added, corrected the discussion of the Meissner state at high interchain hopping
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- 2015
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235. Generalization of Blonder-Tinkham-Klapwijk theory to particle-hole mixing boundary conditions: \pi-shift and conductance dips
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Catapano, M., Romeo, F., Citro, R., and Giubileo, F.
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Condensed Matter - Superconductivity - Abstract
We generalize the Blonder-Tinkham-Klapwijk theory considering non-diagonal boundary conditions in the Bogoliubov-de Gennes scattering problem, to describe anomalous conductance features often reported for normal-metal/superconductor contacts. We calculate the differential conductance spectra showing that conductance dips, not expected in the standard formulation, are explained in terms of phase \pi-shift, between the bulk and the interface order parameter, possibly induced by a localized magnetic moment. A discretized model is used to give quantitative evaluation of the physical conditions, namely the polarization and transparency of the interface, needed to realize the phase gradient., Comment: 7 pages, 5 figures
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- 2015
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236. Temperature and doping dependence of normal state spectral properties in a two-orbital model for ferropnictides
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Flores, J. D. Querales, Ventura, C. I., Citro, R., and Rodríguez-Núñez, J. J.
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Condensed Matter - Strongly Correlated Electrons ,Condensed Matter - Superconductivity - Abstract
Using a second-order perturbative Green's functions approach we determined the normal state single-particle spectral function $A(\vec{k},\omega)$ employing a minimal effective model for iron-based superconductors. The microscopic model, used before to study magnetic fluctuations and superconducting properties, includes the two effective tight-binding bands proposed by S.Raghu et al. [Phys. Rev. B 77, 220503 (R) (2008)], and intra- and inter-orbital local electronic correlations, related to the Fe-3d orbitals. Here, we focus on the study of normal state electronic properties, in particular the temperature and doping dependence of the total density of states, $A(\omega)$, and of $A(\vec{k},\omega)$ in different Brillouin zone regions, and compare them to the existing angle resolved photoemission spectroscopy (ARPES) and previous theoretical results in ferropnictides. We obtain an asymmetric effect of electron and hole doping, quantitative agreement with the experimental chemical potential shifts as a function of doping, as well as spectral weight redistributions near the Fermi level as a function of temperature consistent with the available experimental data. In addition, we predict a non-trivial dependence of the total density of states with the temperature, exhibiting clear renormalization effects by correlations. Interestingly, investigating the origin of this predicted behaviour by analyzing the evolution with temperature of the k-dependent self-energy obtained in our approach, we could identify a number of specific Brillouin zone points, none of them probed by ARPES experiments yet, where the largest non-trivial effects of temperature on the renormalization are present., Comment: Manuscript accepted in Physics Letters A on Feb. 25, 2016
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- 2015
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237. Dynamical Stability of a Many-body Kapitza Pendulum
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Citro, Roberta, Torre, Emanuele G. Dalla, DÁlessio, Luca, Polkovnikov, Anatoli, Babadi, Mehrtash, Oka, Takashi, and Demler, Eugene
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Quantum Physics ,Condensed Matter - Quantum Gases - Abstract
We consider a many-body generalization of the Kapitza pendulum: the periodically-driven sine-Gordon model. We show that this interacting system is dynamically stable to periodic drives with finite frequency and amplitude. This finding is in contrast to the common belief that periodically-driven unbounded interacting systems should always tend to an absorbing infinite-temperature state. The transition to an unstable absorbing state is described by a change in the sign of the kinetic term in the effective Floquet Hamiltonian and controlled by the short-wavelength degrees of freedom. We investigate the stability phase diagram through an analytic high-frequency expansion, a self-consistent variational approach, and a numeric semiclassical calculations. Classical and quantum experiments are proposed to verify the validity of our results., Comment: 11 pages, 11 figures
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- 2015
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238. Introduction to the Volume
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Citro, Roberta, Mancini, Ferdinando, von Klitzing, Klaus, Series Editor, Merlin, Roberto, Series Editor, Queisser, Hans-Joachim, Series Editor, Keimer, Bernhard, Series Editor, Citro, Roberta, editor, and Mancini, Ferdinando, editor
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- 2018
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239. Monitoring Educational Equity. Consensus Study Report
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National Academies, National Academy of Sciences, National Academies, National Academy of Engineering, National Academies, National Academy of Medicine, Edley, Christopher, Koenig, Judith, Nielsen, Natalie, Citro, Constance, Edley, Christopher, Koenig, Judith, Nielsen, Natalie, Citro, Constance, National Academies, National Academy of Sciences, National Academies, National Academy of Engineering, and National Academies, National Academy of Medicine
- Abstract
Disparities in educational attainment among population groups have characterized the United States throughout its history. Education is sometimes characterized as the "great equalizer," but to date, the country has not found ways to successfully address the adverse effects of socioeconomic circumstances, prejudice, and discrimination that suppress performance for some groups. To ensure that the pursuit of equity encompasses both the goals to which the nation aspires for its children and the mechanisms to attain those goals, a revised set of equity indicators is needed. Measures of educational equity often fail to account for the impact of the circumstances in which students live on their academic engagement, academic progress, and educational attainment. Some of the contextual factors that bear on learning include food and housing insecurity, exposure to violence, unsafe neighborhoods, adverse childhood experiences, and exposure to environmental toxins. Consequently, it is difficult to identify when intervention is necessary and how it should function. A revised set of equity indicators should highlight disparities, provide a way to explore potential causes, and point toward possible improvements. "Monitoring Educational Equity" proposes a system of indicators of educational equity and presents recommendations for implementation. This report also serves as a framework to help policy makers better understand and combat inequity in the United States' education system. Disparities in educational opportunities reinforce, and often amplify, disparities in outcomes throughout people's lives. Thus, it is critical to ensure that all students receive comprehensive supports that level the playing field in order to improve the well-being of underrepresented individuals and the nation. [Contributors include Division of Behavioral and Social Sciences and Education; Board on Testing and Assessment; Committee on National Statistics; and Committee on Developing Indicators of Educational Equity. This work was also supported by the Atlantic Philanthropies.]
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- 2019
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240. Digital Devices Use and Fine Motor Skills in Children between 3–6 Years
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Francesca Felicia Operto, Andrea Viggiano, Antonio Perfetto, Gabriella Citro, Miriam Olivieri, Valeria de Simone, Alice Bonuccelli, Alessandro Orsini, Salvatore Aiello, Giangennaro Coppola, and Grazia Maria Giovanna Pastorino
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digital devices ,digital tools ,digital screen ,children ,fine motor skills ,Pediatrics ,RJ1-570 - Abstract
(1) Background: The principal aim of our research was to explore the relationship between digital devices use and fine motor skills in children aged three to six years and to explore the effect of some socio-demographic factors. (2) Methods: we enrolled 185 children aged between three to six years. The parents of all the participants fulfilled a questionnaire to explore the digital device use, and their children performed a standardized test to assess fine motor skills (APCM-2). We performed the Spearman correlation test to explore the relationship between different variables. (3) Results: the children spent an average of 3.08 ± 2.30 h/day on digital devices. We did not find a significant association between the time of use of digital devices and fine motor skills (p = 0.640; r = −0.036). The youngest children experienced digital tools earlier than older ones (p < 0.001; r = 0.424) and they were also the ones who used digital tools more time afterwards (p = 0.012; −0.202). The children who had working parents spent more time on digital devices (p = 0.028; r = 0.164/p = 0.037; r = 0.154) and used digital devices earlier (p = 0.023; r = 0.171). (4) Conclusions: This data suggest that it would be useful to monitor the use of digital tools, especially in the very first years of life. Future studies are needed to further explore this topic.
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- 2023
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241. Effect of Transverse Confinement on a Quasi-One-Dimensional Dipolar Bose Gas
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Stefania De Palo, Edmond Orignac, Roberta Citro, and Luca Salasnich
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dipolar interactions ,variational method ,droplets ,Physics ,QC1-999 - Abstract
We study a gas of bosonic dipolar atoms in the presence of a transverse harmonic trapping potential by using an improved variational Bethe ansatz, which includes the transverse width of the atomic cloud as a variational parameter. Our calculations show that the system behavior evolves from quasi-one dimensional to a strictly one-dimensional one by changing the atom–atom interaction, or the axial density, or the frequency of the transverse confinement. Quite remarkably, in the droplet phase induced by the attractive dipolar interaction the system becomes sub-one dimensional when the transverse width is smaller than the characteristic length of the transverse harmonic confinement.
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- 2023
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242. New Avenues for Treatment and Prevention of Drug-Induced Steatosis and Steatohepatitis: Much More Than Antioxidants
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Cataldi, Mauro, Citro, Vincenzo, Resnati, Chiara, Manco, Federica, and Tarantino, Giovanni
- Published
- 2021
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243. Intramyocardial calcification in apical hypertrophic cardiomyopathy assessed using multimodality imaging: a case series.
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Radano, Ilaria, Mabritto, Barbara, Luceri, Stefania, Bongioanni, Sergio, Maiellaro, Francesco, Zappia, Luca, Lario, Chiara, Macera, Annalisa, Cirillo, Stefano, Pizzuti, Alfredo, Citro, Rodolfo, Galasso, Gennaro, and Musumeci, Giuseppe
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APICAL hypertrophic cardiomyopathy ,CARDIAC magnetic resonance imaging ,HYPERTROPHIC cardiomyopathy ,CARDIAC imaging ,CALCIFICATION - Abstract
Apical hypertrophic cardiomyopathy (ApHCM) is an HCM variant, affecting frequently males in midlife. It is characterized by apical obliteration and persistent diastolic contraction, often resulting in microvascular ischaemia. We report five cases of ApHCM, with evidence of intramyocardial calcification on echocardiogram. On cardiac magnetic imaging (MRI), a hypointense component at early gadolinium enhancement (EGE) sequences, compatible with calcium, and a deep layer, with hyperintensity at late gadolinium enhancement (LGE) sequences, referable to fibrosis, suggest an endomyocardial fibrosis (EMF) diagnosis. EMF pathologic hallmark is endocardium and myocardium scarring, evolving to dystrophic calcification. It is found only in few ApHCM patients. Our series is the largest one described until now. Analysing patients' history, coexistent inflammatory triggers were evident in all of them, so their co‐morbidities could represent a further cause of small vessel disease, in the context of ischaemic microvascular stress due to hypertrophy, leading to fibrosis and dystrophic calcification. This series could demonstrate the relation between apical fibrosis/calcification and microvascular ischaemia due to hypertrophy and inflammatory triggers. [ABSTRACT FROM AUTHOR]
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- 2024
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244. Associations Between Free and Cued Selective Reminding Test and Cerebrospinal Fluid Biomarkers in Amnestic Mild Cognitive Impairment.
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Giuffrè, Guido Maria, Quaranta, Davide, Citro, Salvatore, Morganti, Tommaso Giuseppe, Martellacci, Noemi, Vita, Maria Gabriella, Rossini, Paolo Maria, Calabresi, Paolo, and Marra, Camillo
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AMNESTIC mild cognitive impairment ,CEREBROSPINAL fluid ,MILD cognitive impairment ,EPISODIC memory ,BIOMARKERS ,MEMORY disorders ,VERBAL memory - Abstract
Background: The Free and Cued Selective Reminding Test (FCSRT), assessing verbal episodic memory with controlled learning and semantic cueing, has been recommended for detecting the genuine encoding and storage deficits characterizing AD-related memory disorders. Objective: The present study aims at investigating the ability of FCSRT in predicting cerebrospinal fluid (CSF) evidence of amyloid-β positivity in subjects with amnestic mild cognitive impairment (aMCI) and exploring its associations with amyloidopathy, tauopathy and neurodegeneration biomarkers. Methods: 120 aMCI subjects underwent comprehensive neurological and neuropsychological examinations, including the FCSRT assessment, and CSF collection; CSF Aβ
42/40 ratio, p-tau181, and total-tau quantification were conducted by an automated CLEIA method on Lumipulse G1200. Based on the Aβ42/40 ratio value, subjects were classified as either A+ or A–. Results: All FCSRT subitem scores were significantly lower in A+ group and significantly predicted the amyloid-β status, with Immediate Total Recall (ITR) being the best predictor. No significant correlations were found between FCSRT and CSF biomarkers in the A– aMCI group, while in the A+ aMCI group, all FCSRT subitem scores were negatively correlated with CSF p-tau181 and total-tau, but not with the Aβ42/40 ratio. Conclusions: FCSRT confirms its validity as a tool for the diagnosis of AD, being able to predict the presence of amyloid-β deposition with high specificity. The associations between FCSRT subitem scores and CSF p-tau-181 and total-tau levels in aMCI due to AD could further encourage the clinical use of this simple and cost-effective test in the evaluation of individuals with aMCI. [ABSTRACT FROM AUTHOR]- Published
- 2024
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245. A Dynamic and Effective Peptide-Based Strategy for Promptly Addressing Emerging SARS-CoV-2 Variants of Concern.
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Murdocca, Michela, Romeo, Isabella, Citro, Gennaro, Latini, Andrea, Centofanti, Federica, Bugatti, Antonella, Caccuri, Francesca, Caruso, Arnaldo, Ortuso, Francesco, Alcaro, Stefano, Sangiuolo, Federica, and Novelli, Giuseppe
- Subjects
SARS-CoV-2 ,SARS-CoV-2 Omicron variant ,SURFACE plasmon resonance ,CD26 antigen ,PEPTIDES - Abstract
Genomic surveillance based on sequencing the entire genetic code of SARS-CoV-2 involves monitoring and studying genetic changes and variations in disease-causing organisms such as viruses and bacteria. By tracing the virus, it is possible to prevent epidemic spread in the community, ensuring a 'precision public health' strategy. A peptide-based design was applied to provide an efficacious strategy that is able to counteract any emerging viral variant of concern dynamically and promptly to affect the outcomes of a pandemic at an early stage while waiting for the production of the anti-variant-specific vaccine, which require longer times. The inhibition of the interaction between the receptor-binding domain (RBD) of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and one of the cellular receptors (DPP4) that its receptors routinely bind to infect human cells is an intriguing therapeutic approach to prevent the virus from entering human cells. Among the other modalities developed for this purpose, peptides surely offer unique advantages, including ease of synthesis, serum stability, low immunogenicity and toxicity, and small production and distribution chain costs. Here, we obtained a potent new inhibitor based on the rearrangement of a previously identified peptide that has been rationally designed on a cell dipeptidyl peptidase 4 (DPP4) sequence, a ubiquitous membrane protein known to bind the RBD-SPIKE domain of the virus. This novel peptide (named DPP4-derived), conceived as an endogenous "drug", is capable of targeting the latest tested variants with a high affinity, reducing the VSV* DG-Fluc pseudovirus Omicron's infection capacity by up to 14%, as revealed by in vitro testing in human Calu-3 cells. Surface plasmon resonance (SPR) confirmed the binding affinity of the new DPP4-derived peptide with Omicron variant RBD. [ABSTRACT FROM AUTHOR]
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- 2024
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246. Edge‐wise analysis reveals white matter connectivity associated with focal to bilateral tonic–clonic seizures.
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Javidi, Sam S., He, Xiaosong, Ankeeta, Ankeeta, Zhang, Qirui, Citro, Salvatore, Sperling, Michael R., and Tracy, Joseph I.
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SEIZURES (Medicine) ,WHITE matter (Nerve tissue) ,TEMPORAL lobe epilepsy ,DIFFUSION magnetic resonance imaging ,JOINTS (Engineering) - Abstract
Objective: Focal to bilateral tonic–clonic seizures (FBTCS) represent a challenging subtype of focal temporal lobe epilepsy (TLE) in terms of both severity and treatment response. Most studies have focused on regional brain analysis that is agnostic to the distribution of white matter (WM) pathways associated with a node. We implemented a more selective, edge‐wise approach that allowed for identification of the individual connections unique to FBTCS. Methods: T1‐weighted and diffusion‐weighted images were obtained from 22 patients with solely focal seizures (FS), 43 FBTCS patients, and 65 age/sex‐matched healthy participants (HPs), yielding streamline (STR) connectome matrices. We used diffusion tensor‐derived STRs in an edge‐wise approach to determine specific structural connectivity changes associated with seizure generalization in FBTCS compared to matched FS and HPs. Graph theory metrics were computed on both node‐ and edge‐based connectivity matrices. Results: Edge‐wise analyses demonstrated that all significantly abnormal cross‐hemispheric connections belonged to the FBTCS group. Abnormal connections associated with FBTCS were mostly housed in the contralateral hemisphere, with graph metric values generally decreased compared to HPs. In FBTCS, the contralateral amygdala showed selective decreases in the structural connection pathways to the contralateral frontal lobe. Abnormal connections in TLE involved the amygdala, with the ipsilateral side showing increases and the contralateral decreases. All the FS findings indicated higher graph metrics for connections involving the ipsilateral amygdala. Data also showed that some FBTCS connectivity effects are moderated by aging, recent seizure frequency, and longer illness duration. Significance: Data showed that not all STR pathways are equally affected by the seizure propagation of FBTCS. We demonstrated two key biases, one indicating a large role for the amygdala in the propagation of seizures, the other pointing to the prominent role of cross‐hemispheric and contralateral hemisphere connections in FBTCS. We demonstrated topographic reorganization in FBTCS, pointing to the specific WM tracts involved. [ABSTRACT FROM AUTHOR]
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- 2024
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247. Cardiovascular risk factors and mortality in hospitalized patients with COVID-19: systematic review and meta-analysis of 45 studies and 18,300 patients
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Angelo Silverio, Marco Di Maio, Rodolfo Citro, Luca Esposito, Giuseppe Iuliano, Michele Bellino, Cesare Baldi, Giuseppe De Luca, Michele Ciccarelli, Carmine Vecchione, and Gennaro Galasso
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Novel coronavirus ,SARS-CoV-2 ,COVID-19 ,Cardiovascular risk factors ,Hypertension ,Smoking ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background A high prevalence of cardiovascular risk factors including age, male sex, hypertension, diabetes, and tobacco use, has been reported in patients with Coronavirus disease 2019 (COVID-19) who experienced adverse outcome. The aim of this study was to investigate the relationship between cardiovascular risk factors and in-hospital mortality in patients with COVID-19. Methods MEDLINE, Cochrane, Web of Sciences, and SCOPUS were searched for retrospective or prospective observational studies reporting data on cardiovascular risk factors and in-hospital mortality in patients with COVID-19. Univariable and multivariable age-adjusted analyses were conducted to evaluate the association between cardiovascular risk factors and the occurrence of in-hospital death. Results The analysis included 45 studies enrolling 18,300 patients. The pooled estimate of in-hospital mortality was 12% (95% CI 9–15%). The univariable meta-regression analysis showed a significant association between age (coefficient: 1.06; 95% CI 1.04–1.09; p
- Published
- 2021
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248. A multicentric quality-control study of exercise Doppler echocardiography of the right heart and the pulmonary circulation. The RIGHT Heart International NETwork (RIGHT-NET)
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Francesco Ferrara, Luna Gargani, Carla Contaldi, Gergely Agoston, Paola Argiento, William F. Armstrong, Francesco Bandera, Filippo Cademartiri, Rodolfo Citro, Antonio Cittadini, Rosangela Cocchia, Michele D’Alto, Antonello D’Andrea, Philipp Douschan, Stefano Ghio, Ekkehard Grünig, Marco Guazzi, Stefania Guida, Jaroslaw D. Kasprzak, Theodore John Kolias, Giuseppe Limongelli, Alberto Maria Marra, Matteo Mazzola, Ciro Mauro, Antonella Moreo, Francesco Pieri, Lorenza Pratali, Nicola Riccardo Pugliese, Mauro Raciti, Brigida Ranieri, Lawrence Rudski, Rajan Saggar, Andrea Salzano, Walter Serra, Anna Agnese Stanziola, Mani Vannan, Damien Voilliot, Olga Vriz, Karina Wierzbowska-Drabik, Robert Naeije, Eduardo Bossone, and On behalf of the RIGHT Heart International NETwork (RIGHT-NET) Investigators
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Right ventricle ,Pulmonary hypertension ,Exercise echocardiography ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Purpose This study was a quality-control study of resting and exercise Doppler echocardiography (EDE) variables measured by 19 echocardiography laboratories with proven experience participating in the RIGHT Heart International NETwork. Methods All participating investigators reported the requested variables from ten randomly selected exercise stress tests. Intraclass correlation coefficients (ICC) were calculated to evaluate the inter-observer agreement with the core laboratory. Inter-observer variability of resting and peak exercise tricuspid regurgitation velocity (TRV), right ventricular outflow tract acceleration time (RVOT Act), tricuspid annular plane systolic excursion (TAPSE), tissue Doppler tricuspid lateral annular systolic velocity (S’), right ventricular fractional area change (RV FAC), left ventricular outflow tract velocity time integral (LVOT VTI), mitral inflow pulsed wave Doppler velocity (E), diastolic mitral annular velocity by TDI (e’) and left ventricular ejection fraction (LVEF) were measured. Results The accuracy of 19 investigators for all variables ranged from 99.7 to 100%. ICC was > 0.90 for all observers. Inter-observer variability for resting and exercise variables was for TRV = 3.8 to 2.4%, E = 5.7 to 8.3%, e’ = 6 to 6.5%, RVOT Act = 9.7 to 12, LVOT VTI = 7.4 to 9.6%, S’ = 2.9 to 2.9% and TAPSE = 5.3 to 8%. Moderate inter-observer variability was found for resting and peak exercise RV FAC (15 to 16%). LVEF revealed lower resting and peak exercise variability of 7.6 and 9%. Conclusions When performed in expert centers EDE is a reproducible tool for the assessment of the right heart and the pulmonary circulation.
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- 2021
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249. Performances indígenas y afrodescendientes en Argentina: recreaciones sonoro-corporales de lo 'ancestral'
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Silvia Citro, Julia Broguet, Manuela Rodríguez, and Soledad Torres Agüero
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multiculturalismo ,performances ,identidades étnico ,raciales ,políticas culturales ,Anthropology ,GN1-890 - Abstract
A partir de las políticas públicas del Estado argentino en relación con las poblaciones indígenas y afrodescendientes, examinamos de qué manera las políticas culturales de las provincias de Formosa y Santa Fe, especialmente entre 2003 y 2015, tendieron a visibilizar y revalorizar las performances “ancestrales” de estos pueblos. Analizaremos cómo, frente a las interpelaciones multiculturales por performativizar las identidades étnico-raciales ante la sociedad hegemónica, los/as performers fueron estimulados/as a seleccionar, recrear y espectacularizar determinadas sonoridades, movimientos e imágenes inscritas tanto en repertorios corporizados como en archivos. También exploramos cómo en estos procesos de recreación sonoro-corporal de las memorias se construyen nuevos archivos, con la intención político-cultural de resguardar y legitimar una determinada versión de las posiciones identitarias étnico-raciales puestas en juego.
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- 2021
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250. Intellectual capital in Italian healthcare: senior managers' perspectives
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Manes-Rossi, Francesca, Bisogno, Marco, Aversano, Natalia, and Citro, Francesca
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- 2020
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