Search

Your search keyword '"Piu, Pietro"' showing total 145 results
Start Over Author "Piu, Pietro"
145 results on '"Piu, Pietro"'

4. A validate and standardized pseudotyped microneutralization assay as a safe and powerful tool to measure LASSA neutralising antibodies for vaccine development and comparison

Author

Antonelli, Roberta, primary, Forconi, Vittoria, additional, Molesti, Eleonora, additional, Semplici, Claudia, additional, Piu, Pietro, additional, Altamura, Maria, additional, Dapporto, Francesca, additional, Temperton, Nigel, additional, Montomoli, Emanuele, additional, and Manenti, Alessandro, additional

Published
2024
Full Text
View/download PDF

5. FixaTons: A collection of Human Fixations Datasets and Metrics for Scanpath Similarity

Author

Zanca, Dario, Serchi, Valeria, Piu, Pietro, Rosini, Francesca, and Rufa, Alessandra

Subjects
Computer Science - Artificial Intelligence, Computer Science - Computer Vision and Pattern Recognition
Abstract

In the last three decades, human visual attention has been a topic of great interest in various disciplines. In computer vision, many models have been proposed to predict the distribution of human fixations on a visual stimulus. Recently, thanks to the creation of large collections of data, machine learning algorithms have obtained state-of-the-art performance on the task of saliency map estimation. On the other hand, computational models of scanpath are much less studied. Works are often only descriptive or task specific. This is due to the fact that the scanpath is harder to model because it must include the description of a dynamic. General purpose computational models are present in the literature, but are then evaluated in tasks of saliency prediction, losing therefore information about the dynamics and the behaviour. In addition, two technical reasons have limited the research. The first reason is the lack of robust and uniformly used set of metrics to compare the similarity between scanpath. The second reason is the lack of sufficiently large and varied scanpath datasets. In this report we want to help in both directions. We present FixaTons, a large collection of datasets human scanpaths (temporally ordered sequences of fixations) and saliency maps. It comes along with a software library for easy data usage, statistics calculation and implementation of metrics for scanpath and saliency prediction evaluation.

Published
2018

7. Validation of a double-color ELISpot assay of IFN-γ and IL-4 production in human peripheral blood mononuclear cells

Author

Dapporto, Francesca, primary, De Tommaso, Domiziana, additional, Marrocco, Camilla, additional, Piu, Pietro, additional, Semplici, Claudia, additional, Fantoni, Giulia, additional, Ferrigno, Ilaria, additional, Piccini, Giulia, additional, Monti, Martina, additional, Vanni, Francesca, additional, Razzano, Ilaria, additional, Manini, Ilaria, additional, Montomoli, Emanuele, additional, and Manenti, Alessandro, additional

Published
2023
Full Text
View/download PDF

8. Establishment and validation of a high‐throughput micro‐neutralization assay for respiratory syncytial virus (subtypes A and B)

Author

Bonifazi, Carolina, primary, Trombetta, Claudia Maria, additional, Barneschi, Irene, additional, Latanza, Simona, additional, Leopoldi, Sara, additional, Benincasa, Linda, additional, Leonardi, Margherita, additional, Semplici, Claudia, additional, Piu, Pietro, additional, Marchi, Serena, additional, Montomoli, Emanuele, additional, and Manenti, Alessandro, additional

Published
2023
Full Text
View/download PDF

9. The Role of e-Commerce in the Success of Low-cost Carriers

Author

Ginanneschi Marco and Piu Pietro

Subjects
e-commerce, e-consumers, low-cost carrier, Ryanair, Granger-causality, L10, L93, C53, C63, Business, HF5001-6182
Abstract

This research aims to answer the question if e-commerce favoured in a special way the growth of low-cost carriers within the civil aviation market. After defining low-cost and traditional carriers’ business models, data on transported passengers were collected for three countries (Italy, Germany and Spain) and confronted with the number of e-consumers. Despite a significant correlation in all the three markets, only in Italy our hypothesis has been supported by Granger causality, and the regression analysis allows to forecast a future characterized by a growing dominance of LCCs. Although the definition of an econometric model will require further studies, the distinctive features of the Italian market might represent a starting point for future research on the complex relationship between e-commerce and air transport.

Published
2018
Full Text
View/download PDF

11. Characterization of Enzyme-Linked Immunosorbent Assay (ELISA) for Quantification of Antibodies against Salmonella Typhimurium and Salmonella Enteritidis O-Antigens in Human Sera.

Author

Aruta, Maria Grazia, Lari, Elisa, De Simone, Daniele, Semplici, Bianca, Semplici, Claudia, Dale, Helen, Chirwa, Esmelda, Kadwala, Innocent, Mbewe, Maurice, Banda, Happy, Iturriza-Gomara, Miren, Gordon, Melita, Nyirenda, Tonney, Piu, Pietro, Pizza, Mariagrazia, Berlanda Scorza, Francesco, Grappi, Silvia, Canals, Rocío, and Rossi, Omar

Subjects
SALMONELLA typhimurium, ENZYME-linked immunosorbent assay, SALMONELLA enteritidis, IMMUNOGLOBULINS, VACCINE trials, VACCINE immunogenicity
Abstract

Nontyphoidal Salmonella (NTS) is a leading cause of morbidity and mortality caused by enteric pathogens worldwide in both children and adults, and vaccines are not yet available. The measurement of antigen-specific antibodies in the sera of vaccinated or convalescent individuals is crucial to understand the incidence of disease and the immunogenicity of vaccine candidates. A solid and standardized assay used to determine the level of specific anti-antigens IgG is therefore of paramount importance. In this work, we presented the characterization of a customized enzyme-linked immunosorbent assay (ELISA) with continuous readouts and a standardized definition of EU/mL. We assessed various performance parameters: standard curve accuracy, dilutional linearity, intermediate precision, specificity, limits of blanks, and quantification. The simplicity of the assay, its high sensitivity and specificity coupled with its low cost and the use of basic consumables and instruments without the need of high automation makes it suitable for transfer and application to different laboratories, including resource-limiting settings where the disease is endemic. This ELISA is, therefore, fit for purpose to be used for quantification of antibodies against Salmonella Typhimurium and Salmonella Enteritidis O-antigens in human samples, both for vaccine clinical trials and large sero-epidemiological studies. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

14. The neutralizing response to SARS-CoV-2 Omicron variants BA.1 and BA.2 in COVID-19 patients and homologous and heterologous vaccinees

Author

Dapporto, Francesca, primary, Leonardi, Margherita, additional, Trombetta, Claudia Maria, additional, Semplici, Claudia, additional, Piu, Pietro, additional, Piccini, Giulia, additional, Benincasa, Linda, additional, Marchi, Serena, additional, Andreano, Emanuele, additional, Lovreglio, Piero, additional, Buonvino, Nicola, additional, Decaro, Nicola, additional, Stufano, Angela, additional, Lorusso, Eleonora, additional, Bombardieri, Emilio, additional, Ruello, Antonella, additional, Viviani, Simonetta, additional, Rappuoli, Rino, additional, Molesti, Eleonora, additional, Manenti, Alessandro, additional, and Montomoli, Emanuele, additional

Published
2022
Full Text
View/download PDF

15. Antibody Avidity and Neutralizing Response against SARS-CoV-2 Omicron Variant after Infection or Vaccination

Author

Dapporto, Francesca, primary, Marchi, Serena, additional, Leonardi, Margherita, additional, Piu, Pietro, additional, Lovreglio, Piero, additional, Decaro, Nicola, additional, Buonvino, Nicola, additional, Stufano, Angela, additional, Lorusso, Eleonora, additional, Bombardieri, Emilio, additional, Ruello, Antonella, additional, Viviani, Simonetta, additional, Molesti, Eleonora, additional, Trombetta, Claudia Maria, additional, Manenti, Alessandro, additional, and Montomoli, Emanuele, additional

Published
2022
Full Text
View/download PDF

17. Evaluation and correlation between SARS-CoV-2 neutralizing and binding antibodies in convalescent and vaccinated subjects

Author

Manenti, Alessandro, primary, Gianchecchi, Elena, additional, Dapporto, Francesca, additional, Leonardi, Margherita, additional, Cantaloni, Paolo, additional, Fattorini, Filippo, additional, Piu, Pietro, additional, Bollati, Valentina, additional, Pastorino, Ugo, additional, Apolone, Giovanni, additional, Sozzi, Gabriella, additional, and Montomoli, Emanuele, additional

Published
2022
Full Text
View/download PDF

20. Effect of Repeated Freeze–Thaw Cycles on Influenza Virus Antibodies

Author

Torelli, Alessandro, primary, Gianchecchi, Elena, additional, Monti, Martina, additional, Piu, Pietro, additional, Barneschi, Irene, additional, Bonifazi, Carolina, additional, Coluccio, Rosa, additional, Ganfini, Luisa, additional, La Magra, Luciano Michele, additional, Marconi, Silvia, additional, Marzucchi, Ginevra, additional, Pace, Ramona, additional, Palladino, Laura, additional, Biagi, Bernardo, additional, and Montomoli, Emanuele, additional

Published
2021
Full Text
View/download PDF

21. Comparative analyses of SARS-CoV-2 binding (IgG, IgM, IgA) and neutralizing antibodies from human serum samples

Author

Mazzini, Livia, primary, Martinuzzi, Donata, additional, Hyseni, Inesa, additional, Benincasa, Linda, additional, Molesti, Eleonora, additional, Casa, Elisa, additional, Lapini, Giulia, additional, Piu, Pietro, additional, Trombetta, Claudia Maria, additional, Marchi, Serena, additional, Razzano, Ilaria, additional, Manenti, Alessandro, additional, and Montomoli, Emanuele, additional

Published
2021
Full Text
View/download PDF

23. Electromechanical delay by speckle-tracking echocardiography: A novel tool to distinguish between Brugada syndrome and isolated right bundle branch block

Author

D'Ascenzi, Flavio, primary, Sanz-De La Garza, María, additional, Anselmi, Francesca, additional, Nunno, Loredana, additional, Arbelo, Elena, additional, Jordà, Paloma, additional, Marzotti, Tommaso, additional, Aprile, Federica, additional, Piu, Pietro, additional, Natali, Benedetta Maria, additional, Brugada, Josep, additional, Sitges, Marta, additional, and Mondillo, Sergio, additional

Published
2020
Full Text
View/download PDF

24. Serologically-Based Evaluation of Cross-Protection Antibody Responses among Different A(H1N1) Influenza Strains

Author

Marchi, Serena, primary, Manini, Ilaria, additional, Kistner, Otfried, additional, Piu, Pietro, additional, Remarque, Edmond J., additional, Manenti, Alessandro, additional, Biuso, Fabrizio, additional, Carli, Tommaso, additional, Lazzeri, Giacomo, additional, Montomoli, Emanuele, additional, and Trombetta, Claudia Maria, additional

Published
2020
Full Text
View/download PDF

27. Influenza D Virus: A Potential Threat for Humans?

Author

Trombetta, Claudia Maria, primary, Marchi, Serena, additional, Manini, Ilaria, additional, Kistner, Otfried, additional, Li, Feng, additional, Piu, Pietro, additional, Manenti, Alessandro, additional, Biuso, Fabrizio, additional, Sreenivasan, Chithra, additional, Druce, Julian, additional, and Montomoli, Emanuele, additional

Published
2020
Full Text
View/download PDF

28. Two‐point‐NGS analysis of cancer genes in cell‐free DNA of metastatic cancer patients

Author

Palmieri, Maria, primary, Baldassarri, Margherita, additional, Fava, Francesca, additional, Fabbiani, Alessandra, additional, Gelli, Elisa, additional, Tita, Rossella, additional, Torre, Pamela, additional, Petrioli, Roberto, additional, Hadijstilianou, Theodora, additional, Galimberti, Daniela, additional, Cinotti, Elisa, additional, Bengala, Carmelo, additional, Mandalà, Marco, additional, Piu, Pietro, additional, Miano, Salvatora Tindara, additional, Martellucci, Ignazio, additional, Vannini, Agnese, additional, Pinto, Anna Maria, additional, Mencarelli, Maria Antonietta, additional, Marsili, Stefania, additional, Renieri, Alessandra, additional, and Frullanti, Elisa, additional

Published
2020
Full Text
View/download PDF

33. Cardiac Magnetic Resonance Normal Reference Values of Biventricular Size and Function in Male Athlete's Heart.

Author

D'Ascenzi, Flavio, Anselmi, Francesca, Piu, Pietro, Fiorentini, Caterina, Carbone, Salvatore Francesco, Volterrani, Luca, Focardi, Marta, Bonifazi, Marco, and Mondillo, Sergio

Abstract

The aim of this meta-analysis was to derive normal reference values of biventricular size and function estimated by cardiac magnetic resonance (CMR) in competitive athletes. Exercise-induced enlargement of cardiac chambers is commonly observed in competitive athletes. However, ventricular dilatation is also a common phenotypic expression of life-threatening cardiomyopathies. The use of CMR for the exclusion of pathology is growing. However, normal reference values have not been established for athletes. The authors conducted a systematic review of English-language studies in the MEDLINE, Scopus, and Cochrane databases investigating biventricular size and function by CMR in athletes. Athletes were divided into endurance, combined, and mixed groups according to the sport practiced. The potential impact of training volume was also evaluated. Twenty-seven studies and 983 competitive athletes were included for CMR quantification of biventricular size and function. In this review, normal reference values are presented for biventricular size and function to be applied to male competitive athletes according to the disciplines practiced. A significant impact of training volume was demonstrated for the right ventricle: athletes practicing the largest number of training hours per week were those exhibiting the greatest degree of right ventricular remodeling. Notably, biventricular function was not significantly affected by training volume. The present meta-analysis defines the normal limits of biventricular size and function estimated by CMR in competitive athletes. The authors suggest using these normal reference values as an alternative to standard upper limits derived from the general population when interpreting CMR images in athletes. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

37. Reference values of left atrial size and function according to age: should we redefine the normal upper limits?

Author

D'Ascenzi, Flavio, Piu, Pietro, Capone, Valentina, Sciaccaluga, Carlotta, Solari, Marco, Mondillo, Sergio, and Henein, Michael

Abstract

Different cut-offs have been proposed for left atrial (LA) size. Furthermore, conflicting results have been reported about the influence of age on LA size and data on the impact of age on LA myocardial function are scanty. The aim of this study was to derive references values for LA size and function in healthy subjects and to evaluate the impact of age. We conducted a systematic literature search of MEDLINE database. We included only studies evaluating healthy subjects, with age ranged between 18 and 80 years. Parameters were compared among four age groups, < 30, 30-45, > 45-60, > 60 years. Three hundred twenty-six studies met the inclusion criteria and the final population consisted of 62,821 subjects. LA volume index (LAVi) did not differ among different age groups (p = 0.21). The normal upper limit of LAVi was 24 mL/m2. LA reservoir function, measured by strain, did not differ among age groups (38 ± 3%, 32-43%; p = 0.74). Left ventricular (LV) size and function were not different among groups, except LV mass index. A decrease in E/A ratio and an increase in E/e' ratio were found with advancing age (p < 0.0001 and p = 0.001, respectively). In healthy subjects the normal upper limit of LAVi was lower than that recommended and is not influenced by advancing age. Furthermore, also LA function measured by strain was not affected by age. The current reference values of LAVi should be used with caution when applied to healthy subjects. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

38. Next generation sequencing in sporadic retinoblastoma patients reveals somatic mosaicism

Author

Amitrano, Sara, primary, Marozza, Annabella, additional, Somma, Serena, additional, Imperatore, Valentina, additional, Hadjistilianou, Theodora, additional, De Francesco, Sonia, additional, Toti, Paolo, additional, Galimberti, Daniela, additional, Meloni, Ilaria, additional, Cetta, Francesco, additional, Piu, Pietro, additional, Di Marco, Chiara, additional, Dosa, Laura, additional, Lo Rizzo, Caterina, additional, Carignani, Giulia, additional, Mencarelli, Maria Antonietta, additional, Mari, Francesca, additional, Renieri, Alessandra, additional, and Ariani, Francesca, additional

Published
2015
Full Text
View/download PDF

39. Cerebral Circulation Time is Prolonged and Not Correlated with EDSS in Multiple Sclerosis Patients: A Study Using Digital Subtracted Angiography

Author

Monti, Lucia, primary, Donati, Donatella, additional, Menci, Elisabetta, additional, Cioni, Samuele, additional, Bellini, Matteo, additional, Grazzini, Irene, additional, Leonini, Sara, additional, Galluzzi, Paolo, additional, Severi, Sauro, additional, Burroni, Luca, additional, Casasco, Alfredo, additional, Morbidelli, Lucia, additional, Santarnecchi, Emiliano, additional, and Piu, Pietro, additional

Published
2015
Full Text
View/download PDF

40. MRI Helps Depict Clinically Undetectable Risk Factors in Advanced Stage Retinoblastomas

Author

Galluzzi, Paolo, primary, Hadjistilianou, Theodora, additional, Cerase, Alfonso, additional, Toti, Paolo, additional, Leonini, Sara, additional, Bracco, Sandra, additional, De Francesco, Sonia, additional, Galimberti, Daniela, additional, Balducci, Donatella, additional, Piu, Pietro, additional, Monti, Lucia, additional, Bellini, Matteo, additional, Caini, Mauro, additional, and Rossi, Alessandro, additional

Published
2015
Full Text
View/download PDF

45. Quantitative ColourDopplerSonography Evaluation of Cerebral Venous Outflow: A Comparative Study between Patients with Multiple Sclerosis and Controls

Author

Monti, Lucia, primary, Menci, Elisabetta, additional, Ulivelli, Monica, additional, Cerase, Alfonso, additional, Bartalini, Sabina, additional, Piu, Pietro, additional, Marotti, Nicola, additional, Leonini, Sara, additional, Galluzzi, Paolo, additional, Romano, Daniele G., additional, Casasco, Alfredo E., additional, and Venturi, Carlo, additional

Published
2011
Full Text
View/download PDF

49. INTRA AND INTER EXAMINER RELIABILITY OF THE RANGE OF MOTION OF THE SHOULDER IN ASYMPTOMATIC SUBJECTS, BY MEANS OF DIGITAL INCLINOMETERS.

Author

Poser, Antonio, Ballarin, Raul, Piu, Pietro, Venturin, Davide, Plebani, Giuseppe, and Rossi, Alex

Abstract

Painful shoulder is a common disorder: approximately the 1% of adult subjects consults their physician about this issue and its prevalence among musculoskeletal disorders only follows that of the low back pain. Shoulder pathologies present themselves through pain, as well as through the loss of the joint movement and the decrease in muscular strength. The evaluation of the range of motion is an important part of the objective examination. Scientific literature reports numerous studies in which the reliability of the measurements of the glenohumeral range of motion has been evaluated, but only one among them has been carried out in a clinical setting. This study aims at evaluating, in a simulated clinical setting, the intra and inter-examiner reliability of the measurement, carried out with a digital inclinometer, of the movements of abduction, internal rotation, external rotation at 90° of shoulder abduction, horizontal adduction (transthoracic) of the glenohumeral. From the results, it is possible to state that the measurements of the range of motion of the gleno-humeral, proved to be reliable and precise if carried out by the same examiner. Moreover, in the case of a patient evaluated by a different examiner during the treatment, it must be considered that the reliability of the measurements relative to the abduction and horizontal adduction is too low. [ABSTRACT FROM AUTHOR]

Published
2015

50. MRI-based assessment of the pineal gland in a large population of children aged 0–5 years and comparison with pineoblastoma: part I, the solid gland

Author

Galluzzi, Paolo, de Jong, Marcus C., Sirin, Selma, Maeder, Philippe, Piu, Pietro, Cerase, Alfonso, Monti, Lucia, Brisse, Hervé J., Castelijns, Jonas A., de Graaf, Pim, Goericke, Sophia L., European Retinoblastoma Imaging Collaboration (ERIC), Radiology and nuclear medicine, and CCA - Imaging

Subjects
Male, Medizin, 030218 nuclear medicine & medical imaging, Pineal gland, 0302 clinical medicine, Reference Values, Cyst, Pineoblastoma, Neuroradiology, Pediatric, medicine.diagnostic_test, Brain Neoplasms, Retinoblastoma, Brain Neoplasms/diagnostic imaging, Child, Preschool, Diagnosis, Differential, Europe, Female, Humans, Infant, Infant, Newborn, Magnetic Resonance Imaging/methods, Pineal Gland/diagnostic imaging, Pineal Gland/pathology, Pinealoma/diagnostic imaging, Pinealoma/pathology, Reproducibility of Results, Retrospective Studies, Sensitivity and Specificity, Gland size, Anatomy, Magnetic Resonance Imaging, medicine.anatomical_structure, Radiology Nuclear Medicine and imaging, Pinealoma, Cardiology and Cardiovascular Medicine, hormones, hormone substitutes, and hormone antagonists, endocrine system, Clinical Neurology, 03 medical and health sciences, medicine, Radiology, Nuclear Medicine and imaging, business.industry, Magnetic resonance imaging, medicine.disease, nervous system, Neurology (clinical), Paediatric Neuroradiology, Differential diagnosis, business, 030217 neurology & neurosurgery
Abstract

Introduction Differentiation between normal solid (non-cystic) pineal glands and pineal pathologies on brain MRI is difficult. The aim of this study was to assess the size of the solid pineal gland in children (0–5 years) and compare the findings with published pineoblastoma cases. Methods We retrospectively analyzed the size (width, height, planimetric area) of solid pineal glands in 184 non-retinoblastoma patients (73 female, 111 male) aged 0–5 years on MRI. The effect of age and gender on gland size was evaluated. Linear regression analysis was performed to analyze the relation between size and age. Ninety-nine percent prediction intervals around the mean were added to construct a normal size range per age, with the upper bound of the predictive interval as the parameter of interest as a cutoff for normalcy. Results There was no significant interaction of gender and age for all the three pineal gland parameters (width, height, and area). Linear regression analysis gave 99 % upper prediction bounds of 7.9, 4.8, and 25.4 mm2, respectively, for width, height, and area. The slopes (size increase per month) of each parameter were 0.046, 0.023, and 0.202, respectively. Ninety-three percent (95 % CI 66–100 %) of asymptomatic solid pineoblastomas were larger in size than the 99 % upper bound. Conclusion This study establishes norms for solid pineal gland size in non-retinoblastoma children aged 0–5 years. Knowledge of the size of the normal pineal gland is helpful for detection of pineal gland abnormalities, particularly pineoblastoma. Electronic supplementary material The online version of this article (doi:10.1007/s00234-016-1684-z) contains supplementary material, which is available to authorized users.

Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results