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Muratore L, Laurenzi A, De Luca A, Bertoni L, Torielli D, Baccelliere L, Del Bianco E, Tsagarakis NG. A Unified Multimodal Interface for the RELAX High-Payload Collaborative Robot. Sensors (Basel) 2023; 23:7735. [PMID: 37765791 PMCID: PMC10534361 DOI: 10.3390/s23187735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/27/2023] [Accepted: 08/09/2023] [Indexed: 09/29/2023]
Abstract
This manuscript introduces a mobile cobot equipped with a custom-designed high payload arm called RELAX combined with a novel unified multimodal interface that facilitates Human-Robot Collaboration (HRC) tasks requiring high-level interaction forces on a real-world scale. The proposed multimodal framework is capable of combining physical interaction, Ultra Wide-Band (UWB) radio sensing, a Graphical User Interface (GUI), verbal control, and gesture interfaces, combining the benefits of all these different modalities and allowing humans to accurately and efficiently command the RELAX mobile cobot and collaborate with it. The effectiveness of the multimodal interface is evaluated in scenarios where the operator guides RELAX to reach designated locations in the environment while avoiding obstacles and performing high-payload transportation tasks, again in a collaborative fashion. The results demonstrate that a human co-worker can productively complete complex missions and command the RELAX mobile cobot using the proposed multimodal interaction framework.
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Affiliation(s)
- Luca Muratore
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
| | - Arturo Laurenzi
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
| | - Alessio De Luca
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), Università di Genova, 16145 Genova, Italy
| | - Liana Bertoni
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
- Department of Information Engineering (DII), Università di Pisa, 56122 Pisa, Italy
| | - Davide Torielli
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
- Department of Informatics, Bioengineering, Robotics and Systems Engineering (DIBRIS), Università di Genova, 16145 Genova, Italy
| | - Lorenzo Baccelliere
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
| | - Edoardo Del Bianco
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
- DISI, Università di Trento, 38123 Trento, Italy
| | - Nikos G Tsagarakis
- Humanoids and Human-Centered Mechatronics Research Line, Istituto Italiano di Tecnologia (IIT), Via Morego 30, 16163 Genova, Italy
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De Luca A, Muratore L, Raghavan VS, Antonucci D, Tsagarakis NG. Autonomous Obstacle Crossing Strategies for the Hybrid Wheeled-Legged Robot Centauro. Front Robot AI 2021; 8:721001. [PMID: 34869611 PMCID: PMC8640219 DOI: 10.3389/frobt.2021.721001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 09/06/2021] [Indexed: 11/20/2022] Open
Abstract
The development of autonomous legged/wheeled robots with the ability to navigate and execute tasks in unstructured environments is a well-known research challenge. In this work we introduce a methodology that permits a hybrid legged/wheeled platform to realize terrain traversing functionalities that are adaptable, extendable and can be autonomously selected and regulated based on the geometry of the perceived ground and associated obstacles. The proposed methodology makes use of a set of terrain traversing primitive behaviors that are used to perform driving, stepping on, down and over and can be adapted, based on the ground and obstacle geometry and dimensions. The terrain geometrical properties are first obtained by a perception module, which makes use of point cloud data coming from the LiDAR sensor to segment the terrain in front of the robot, identifying possible gaps or obstacles on the ground. Using these parameters the selection and adaption of the most appropriate traversing behavior is made in an autonomous manner. Traversing behaviors can be also serialized in a different order to synthesise more complex terrain crossing plans over paths of diverse geometry. Furthermore, the proposed methodology is easily extendable by incorporating additional primitive traversing behaviors into the robot mobility framework and in such a way more complex terrain negotiation capabilities can be eventually realized in an add-on fashion. The pipeline of the above methodology was initially implemented and validated on a Gazebo simulation environment. It was then ported and verified on the CENTAURO robot enabling the robot to successfully negotiate terrains of diverse geometry and size using the terrain traversing primitives.
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Affiliation(s)
- Alessio De Luca
- Humanoids and Human Centered Mechatronics Research Line, Istituto Italiano di Technologia, Genoa, Italy
| | - Luca Muratore
- Humanoids and Human Centered Mechatronics Research Line, Istituto Italiano di Technologia, Genoa, Italy
| | - Vignesh Sushrutha Raghavan
- Humanoids and Human Centered Mechatronics Research Line, Istituto Italiano di Technologia, Genoa, Italy.,Università di Pisa, Pisa, Italy
| | - Davide Antonucci
- Humanoids and Human Centered Mechatronics Research Line, Istituto Italiano di Technologia, Genoa, Italy
| | - Nikolaos G Tsagarakis
- Humanoids and Human Centered Mechatronics Research Line, Istituto Italiano di Technologia, Genoa, Italy
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Murri R, Lardo S, De Luca A, Posteraro B, Torelli R, De Angelis G, Giovannenze F, Taccari F, Pavan L, Parroni L, Sanguinetti M, Fantoni M. Post-Prescription Audit Plus Beta-D-Glucan Assessment Decrease Echinocandin Use in People with Suspected Invasive Candidiasis. Medicina (Kaunas) 2021; 57:medicina57070656. [PMID: 34206911 PMCID: PMC8306264 DOI: 10.3390/medicina57070656] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/13/2021] [Accepted: 06/23/2021] [Indexed: 01/08/2023]
Abstract
Background and Objectives: Overtreatment with antifungal drugs is often observed. Antifungal stewardship (AFS) focuses on optimizing the treatment for invasive fungal diseases. The objective of the present study was to evaluate the utility of a post-prescription audit plus beta-D-glucan (BDG) assessment on reducing echinocandin use in persons with suspected invasive candidiasis. Materials and Methods: This is a prospective, pre-post quasi-experimental study of people starting echinocandins for suspected invasive candidiasis. The intervention of the study included review of each echinocandin prescription and discontinuation of treatment if a very low probability of fungal disease or a negative BDG value were found. Pre-intervention data were compared with the intervention phase. The primary outcome of the study was the duration of echinocandin therapy. Secondary outcomes were length of hospital stay and mortality. Results: Ninety-two echinocandin prescriptions were reviewed, 49 (53.3%) in the pre-intervention phase and 43 (46.7%) in the intervention phase. Discontinuation of antifungal therapy was possible in 21 of the 43 patients in the intervention phase (48.8%). The duration of echinocandin therapy was 7.4 (SD 4.7) in the pre-intervention phase, 4.1 days (SD 2.9) in persons undergoing the intervention, and 8.6 (SD 7.3) in persons in whom the intervention was not feasible (p at ANOVA = 0.016). Length of stay and mortality did not differ between pre-intervention and intervention phases. Conclusions: An intervention based on pre-prescription restriction and post-prescription audit when combined with BDG measurement is effective in optimizing antifungal therapy by significantly reducing excessive treatment duration.
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Affiliation(s)
- Rita Murri
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Infectious Diseases Section, Department of Safety and Bioethics, Catholic University of the Sacred Heart, 00168 Rome, Italy
- Correspondence: ; Tel.: +39-333-456-2124
| | - Sara Lardo
- A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy;
| | - Alessio De Luca
- Pharmacy Complex Operative Unit, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (A.D.L.); (L.P.); (L.P.)
| | - Brunella Posteraro
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Department of Basic Biotechnology, Clinical Intensive Care and Perioperative Sciences, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Riccardo Torelli
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Department of Basic Biotechnology, Clinical Intensive Care and Perioperative Sciences, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Giulia De Angelis
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Department of Basic Biotechnology, Clinical Intensive Care and Perioperative Sciences, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Francesca Giovannenze
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Infectious Diseases Section, Department of Safety and Bioethics, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Francesco Taccari
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
| | - Lucia Pavan
- Pharmacy Complex Operative Unit, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (A.D.L.); (L.P.); (L.P.)
| | - Lucia Parroni
- Pharmacy Complex Operative Unit, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (A.D.L.); (L.P.); (L.P.)
| | - Maurizio Sanguinetti
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Department of Basic Biotechnology, Clinical Intensive Care and Perioperative Sciences, Catholic University of the Sacred Heart, 00168 Rome, Italy
| | - Massimo Fantoni
- Department of Laboratory and Infectious Diseases Sciences, A. Gemelli University Hospital Foundation IRCCS, 00168 Rome, Italy; (B.P.); (R.T.); (G.D.A.); (F.G.); (F.T.); (M.S.); (M.F.)
- Infectious Diseases Section, Department of Safety and Bioethics, Catholic University of the Sacred Heart, 00168 Rome, Italy
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Sciubba F, Spagnoli M, Iavicoli S, Asaro G, De Luca A, Guglielmi G, Delfini M. Efficacy of sodium hypochlorite in the degradation antineoplastic drugs by NMR spectroscopy. G Ital Med Lav Ergon 2020; 42:109-120. [PMID: 32614541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
Antineoplastic drugs are used to treat cancer, having their therapeutic effect by inhibiting the cell division process. Although cancer cells, due to their rapid growth, are more sensitive to the toxic effects of chemotherapeutic agents, healthy cells and tissues may also be damaged. Many studies show acute and chronic toxicity both in patients treated with chemotherapy and in exposed workers. In fact, exposure to these substances can also be linked to the formation of different types of secondary tumors. The International Agency on Research on Cancer (IARC) included some antineplastic drugs in Group 1 (carcinogenic to humans), in Group 2A (probable carcinogens for In recent years, many studies have evidenced the presence of antineoplastic drug contamination on work surfaces, materials and floors and based on these observations, international and national guidelines have been published to limit occupational exposure, with particular attention to procedures post-preparation of chemotherapy to limit as much as possible the accumulation of contaminated residues. The aim of the following study is to determine the effectiveness of the degradation of four antineoplastic drugs: 5-fluorouracil, azacitidine, cytarabine and irinotecan using a low concentration of sodium hypochlorite solution (0.115%). The analytical platform used to monitor the degradation course of the substances under examination was hydrogen nuclear magnetic spectroscopy (1H NMR). In the same experimental conditions the effectiveness of the degradation of the same antineoplastic drugs with a 99.9% ethanol solution was also evaluated. The study showed that the best degradation efficiency (> 90% ) is obtained with the hypochlorite solution after 15 minutes.
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Affiliation(s)
- Fabio Sciubba
- University of Rome La Sapienza - Department of Chemistry (S. Cannizzaro Building), Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Mariangela Spagnoli
- INAIL - Italian Workers Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via di Fontana Candida 1, 00078 Monte Porzio Catone, Rome, Italy
| | - Sergio Iavicoli
- INAIL - Italian Workers Compensation Authority - Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, Via di Fontana Candida 1, 00078 Monte Porzio Catone, Rome, Italy
| | - Gaia Asaro
- A.R.N.A.S. Ospedali Civico Di Cristina Benfratelli - Farmacia Ospedaliera, Piazza Nicola Leotta 4, 90127 Palermo, Italy
| | - Alessio De Luca
- Fondazione Policlinico Universitario Agostino Gemelli - Farmacia Interna, Largo Agostino Gemelli 8, 00168 Rome, Italy
| | - Gaspare Guglielmi
- A.O.R.N. Antonio Cardarelli - U.O.C. Farmacia Ospedaliera, Via Antonio Cardarelli 9, 80131 Napoli, Italy
| | - Maurizio Delfini
- University of Rome La Sapienza - Department of Chemistry (S. Cannizzaro Building), Piazzale Aldo Moro 5, 00185 Rome, Italy
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Busca A, Lessi F, Verga L, Candoni A, Cattaneo C, Cesaro S, Dragonetti G, Delia M, De Luca A, Guglielmi G, Tumbarello M, Martino G, Nadali G, Fanci R, Picardi M, Potenza L, Nosari A, Aversa F, Pagano L. SEIFEM 2010-E: economic evaluation of posaconazole for antifungal prophylaxis in patients with acute myeloid leukemia receiving induction chemotherapy. Leuk Lymphoma 2017; 58:2859-2864. [PMID: 28508692 DOI: 10.1080/10428194.2017.1318438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Posaconazole demonstrated clinical superiority over fluconazole and itraconazole for prophylaxis of mold infections, although concerns exist regarding the high acquisition cost for posaconazole. In this respect, we sought to analyze the costs of antifungal prophylaxis in patients with acute myeloid leukemia (AML) who received prophylactic posaconazole (n = 510, 58%), itraconazole (n = 120, 14%) or fluconazole (n = 175, 20%) during induction chemotherapy. The estimated cost of antifungal prophylaxis as well as the costs of subsequent systemic antifungal therapy for treatening an invasive fungal infections (IFI) was higher in the posaconazole group compared to itraconazole and fluconazole groups. Based on the Monte Carlo simulations, the itraconazole group had the highest cost, followed by the posaconazole and fluconazole group, although the overall survival was higher in the posaconazole group as compared to the other groups. In conclusion, the cost of prophylaxis with posaconazole in AML patients compares favorably with conventional antifungal agents.
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Affiliation(s)
| | - Federica Lessi
- b Ematologia ed Immunologia Clinica, Azienda Ospedaliera di Padova , Italy
| | - Luisa Verga
- c Unità di Ematologia , Università di Milano, Ospedale S.Gerardo , Monza , Italy
| | - Anna Candoni
- d Division of Hematology and SCT Unit , University Hospital of Udine , Italy
| | - Chiara Cattaneo
- e Divisione di Ematologia , Spedali Civili di Brescia , Italy
| | - Simone Cesaro
- f Azienda Ospedaliera Universitaria Integrata , Verona , Italy
| | - Giulia Dragonetti
- g Istituto di Ematologia, Università Cattolica del Sacro Cuore , Roma , Italy
| | - Mario Delia
- h Sezione di Ematologia , Dipartimento dell'Emergenza e dei Trapianti d'Organo-Università di Bari , Italy
| | - Alessio De Luca
- i Farmacia ospedaliera Fondazione policlinico Universitario A. Gemelli Roma , Italy
| | - Gaspare Guglielmi
- i Farmacia ospedaliera Fondazione policlinico Universitario A. Gemelli Roma , Italy
| | - Mario Tumbarello
- j Istituto di Malattie Infettive, Università Cattolica del Sacro Cuore , Roma , Italy
| | - Giordana Martino
- j Istituto di Malattie Infettive, Università Cattolica del Sacro Cuore , Roma , Italy
| | - Gianpaolo Nadali
- k UOC Ematologia , Azienda Ospedaliera Universitaria Integrata di Verona , Italy
| | - Rosa Fanci
- l Unità Funzionale di Ematologia , Azienda Ospedaliera-Universitaria Careggi e Università di Firenze , Italy
| | - Marco Picardi
- m Dipartimento di Scienze Biomediche Avanzate Università degli Studi di Napoli Federico II , Napoli , Italy
| | - Leonardo Potenza
- n Dipartimento di Scienze Mediche e Chirurgiche Materno-infantili e dell'adulto , Università degli Studi di Modena e Reggio Emilia, Azienda Ospedaliero-Universitaria Policlinico , Modena , Italy
| | - Annamaria Nosari
- o Dipartimento di Ematologia ed Oncologia , Niguarda Cancer Center ASST Grande Ospedale Metropolitano Niguarda , Milano , Italy
| | - Franco Aversa
- p Sezione di Ematologia , Università di Parma , Italy
| | - Livio Pagano
- g Istituto di Ematologia, Università Cattolica del Sacro Cuore , Roma , Italy
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Stefani L, De Luca A, Toncelli L, Pedrizzetti G, Galanti G. 3D Strain helps relating LV function to LV and structure in athletes. Cardiovasc Ultrasound 2014; 12:33. [PMID: 25113389 PMCID: PMC4138416 DOI: 10.1186/1476-7120-12-33] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 08/04/2014] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION The evaluation of cardiac contraction could benefit from a connection with the underlying helical structure of cardiac fibers in athletes either completely healthy or with minor common cardiopathies like Bicuspid Aortic Valve (BAV). This study aims to exploit the potential role of 3D strain to improve the physiological understanding of LV function and modification due to physical activity as a comparative model. METHODS Three age-matched groups of young (age 20.3 ± 5.4) individuals are prospectively enrolled: 15 normal healthy subjects, 15 healthy athletes, and 20 athletes with bicuspid aortic valve (BAV). All subjects underwent echocardiographic examination and both 2D and 3D strain analysis. RESULTS All echo parameters were within the normal range in the three groups. Global values of end-systolic longitudinal and circumferential strain, assesses by either 2D or 3D analysis, were not significantly different. The 3D strain analysis was extended in terms of principal and secondary strain (PS, SS). Global PS was very similar, global SS was significantly higher in athletes and displays a modified time course. The comparative analysis of strain-lines pattern suggests that the enhancement of LV function is achieved by a more synchronous recruitment of both left- and right-handed helical fibers. CONCLUSIONS 3D strain analysis allows a deeper physiological understanding of LV contraction in different types of athletes. Secondary strain, only available in 3D, identifies increase of performances due to physical activity; this appears to follow from the synergic activation of endocardial and epicardial fibers.
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Affiliation(s)
- Laura Stefani
- Sport Medicine Center, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Alessio De Luca
- Sport Medicine Center, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Loira Toncelli
- Sport Medicine Center, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Gianni Pedrizzetti
- Department of Engineering and Architecture, University of Trieste, Trieste, Italy
| | - Giorgio Galanti
- Sport Medicine Center, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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Abstract
Purpose The study of the right ventricular (RV) chamber has been recently improved by use of the 3D method. In young asymptomatic trained athletes, RV is not routinely investigated if not in suspected disease. This study is designed to test if the 3D method compared to 2D, adds information to study of RV morphology and function, in the early stages of myocardial remodeling of a group of young athletes. Methods The RV chamber function was assessed in 25 young trained athletes (20 soccer and 5 basketball) aged 20±3 yrs and compared to 20 sedentary controls by 2D-AC and 3D-RV methods (TomTec), measuring RV diastolic (RVDV) and systolic (RVSV) volumes or ejection fraction (EF). Results 3D RV volumes were slightly higher in athletes than the 2D volumes in presence of lower EF values, but not significantly higher than in sedentary. Significant differences were conversely found comparing 3D systolic and diastolic RV volumes and 2D-AC volumes within each group with higher values in athletes (RVDV: P=0.001 for athletes and P<0.001 for sedentary, and RVSV: P<0.04 for athletes and P<0.001 for sedentary). Conclusion Although the found EF values were substantially similar, the morphological assessment of the initial modifications of this chamber of the young “athlete's heart”, results seem to be more accurate using the 3D method than 2D. The clinical implication of this aspect could be of interest in case of difficulty in drawing a clear diagnosis of any RV chamber disease in young athletes.
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Affiliation(s)
| | - Laura Stefani
- Address: Sports Medicine Center, University of Florence, Italy.
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Stefani L, Mascherini G, Scacciati I, De Luca A, Maffulli N, Galanti G. Positive effect of the use of accelerometry on lifestyle awareness of overweight hypertensive patients. Asian J Sports Med 2013; 4:241-8. [PMID: 24799998 PMCID: PMC3977207 DOI: 10.5812/asjsm.34242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2013] [Accepted: 08/02/2013] [Indexed: 12/01/2022] Open
Abstract
PURPOSE Sedentary habits are strongly associated with increase of cardiovascular risk factors. The present study aimed to verify the role of accelerometry in identifying sedentary behavior, and the possible short term positive effect of this intervention on some anthropometric variables in a group of patients with cardiovascular risks factors. METHODS To quantify daily Spontaneous Motor Activity (SMA) levels and identify sedentary behavior, an accelerometer was employed, in addition to a simple questionnaire, in a group of overweight, hypertensive subjects. A personalized unsupervised 3 month long physical exercise program was planned. After this time, acceleroometry was again undertaken to analyze the impact of the intervention on some life style parameters, including the number of the steps taken daily, and Physical Activity Level (PAL). In addition, body water balance, weight, and Body Mass Index (BMI) were also evaluated. RESULTS Assessment of physical activity by accelerometry identifies sedentary behaviors in a larger number of individuals. After three months of regular unsupervised aerobic exercise, PAL improved from 1.56 ±0.1 to 1.68±0.2 with P<0.005, weight (kg) reduced from 85.13 ± 20 to 83.10 ± 19 (P<0.05), BMI from 29.58 to 28.7 (P<0.05). CONCLUSION Accelerometry allows to objectify PAL, and can be used to monitor improvement of variables strongly related to cardiovascular risk.
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Affiliation(s)
- Laura Stefani
- Sports Medicine Center, University of Florence, Italy
| | | | | | | | - Nicola Maffulli
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, Salerno, Italy, & Queen Mary University of London, Barts and The London School of Medicine and Dentistry, Institute of Health Sciences Education, Centre for Sports and Exercise, UK
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Galanti G, Stefani L, De Luca A, Pellicanò G, Bechi P. A case of carcinoid heart metastases. J Echocardiogr 2013; 11:152-4. [PMID: 27278766 DOI: 10.1007/s12574-013-0186-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 06/06/2013] [Accepted: 06/09/2013] [Indexed: 11/26/2022]
Abstract
Carcinoid tumor is an uncommon tumor that has often already developed metastases at the time of diagnosis. The primary site of tumors are the gastrointestinal tract, breast, and bronchus. The first manifestation of "carcinoid syndrome" occurs as a result of hormone production and cardiac involvement can be recognized in approximately half of the patients. The tricuspid or pulmonary valves are often affected, while, more rarely, the myocardial wall is of interest. A 51-year-old female patient affected by a primary pancreatic carcinoid showed interventricular septum carcinoid disease diagnosed by 2D echocardiography.
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Affiliation(s)
- Giorgio Galanti
- Sports Medicine Center and Cardiological Non-Invasive Laboratory, University of Florence, Viale Morgagni 85, 50100, Florence, Italy
| | - Laura Stefani
- Sports Medicine Center and Cardiological Non-Invasive Laboratory, University of Florence, Viale Morgagni 85, 50100, Florence, Italy.
| | - Alessio De Luca
- Sports Medicine Center and Cardiological Non-Invasive Laboratory, University of Florence, Viale Morgagni 85, 50100, Florence, Italy
| | | | - Paolo Bechi
- General Surgical Department, University of Florence, Florence, Italy
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Mangual JO, Kraigher-Krainer E, De Luca A, Toncelli L, Shah A, Solomon S, Galanti G, Domenichini F, Pedrizzetti G. Comparative numerical study on left ventricular fluid dynamics after dilated cardiomyopathy. J Biomech 2013; 46:1611-7. [DOI: 10.1016/j.jbiomech.2013.04.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 04/15/2013] [Accepted: 04/15/2013] [Indexed: 10/26/2022]
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Mangual JO, De Luca A, Toncelli L, Domenichini F, Galanti G, Pedrizzetti G. Three-dimensional reconstruction of the functional strain-line pattern in the left ventricle from 3-dimensional echocardiography. Circ Cardiovasc Imaging 2013; 5:808-9. [PMID: 23169983 DOI: 10.1161/circimaging.112.979385] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jan O Mangual
- Department of Civil and Environmental Engineering, University of Florence, Florence, Italy.
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Ombrone D, Malvagia S, Funghini S, Giocaliere E, Della Bona ML, Forni G, De Luca A, Villanelli F, Casetta B, Guerrini R, la Marca G. Screening of lysosomal storage disorders: application of the online trapping-and-cleanup liquid chromatography/mass spectrometry method for mucopolysaccharidosis I. Eur J Mass Spectrom (Chichester) 2013; 19:497-503. [PMID: 24378468 DOI: 10.1255/ejms.1257] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In recent years, new treatments have become available to treat some lysosomal storage disorders (LSDs) and many studies suggest that there is a benefit with starting therapy early. Newborn screening should detect diseases early enough for prompt treatment. Some countries include additional conditions, such as some LSDs, into their newborn screening panels. Mucopolysaccharidosis Type I (MPS I) is an autosomal recessive disorder caused by the deficiency of α-L-iduronidase (IDUA) activity. Currently, enzyme replacement therapy (ERT) or bone marrow transplantation is available and this has raised a growing interest for the development of a newborn screening test. In 2009, we reported a new fast and simplified tandem mass spectrometry-based method for quantifying five enzyme activities on dried blood spots. Here, we describe the inclusion of IDUA activity determination for the simultaneous detection of six lysosomal storage diseases. We have defined reference normal ranges by testing 680 healthy newborns and 240 adults. The assay was checked through three confirmed MPS I patients whose IDUA activity was below the normal range. Reproducibility of the assays has been established by assessing the intra-day and inter-day assay imprecisions. This quick assay has been devised to be implemented in newborn screening by liquid chromatography tandem mass spectrometry.
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Affiliation(s)
- Daniela Ombrone
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy and Department of Neurosciences, Psychology, Pharmacology and Child Health, University of Florence, Viale Pieraccini 24, 50139 Florence, Italy
| | - Sabrina Malvagia
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy and Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Silvia Funghini
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy and Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Elisa Giocaliere
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Maria Luisa Della Bona
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Giulia Forni
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Alessio De Luca
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Fabio Villanelli
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Bruno Casetta
- AB Sciex Italia srl, Via Lombardia 218, 20861 Brugherio, Italy
| | - Renzo Guerrini
- Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy
| | - Giancarlo la Marca
- Newborn Screening, Biochemistry and Pharmacology Laboratories, Clinic of Pediatric Neurology, Meyer University Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy, Department of Neurosciences, Psychology, Pharmacology and Child Health, University of Florence, Viale Pieraccini 24, 50139 Florence, Italy and Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, 24 Viale Pieraccini 24, 50139 Florence, Italy.
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Pedrizzetti G, Kraigher-Krainer E, De Luca A, Caracciolo G, Mangual JO, Shah A, Toncelli L, Domenichini F, Tonti G, Galanti G, Sengupta PP, Narula J, Solomon S. Functional strain-line pattern in the human left ventricle. Phys Rev Lett 2012; 109:048103. [PMID: 23006111 DOI: 10.1103/physrevlett.109.048103] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Indexed: 06/01/2023]
Abstract
Analysis of deformations in terms of principal directions appears well suited for biological tissues that present an underlying anatomical structure of fiber arrangement. We applied this concept here to study deformation of the beating heart in vivo analyzing 30 subjects that underwent accurate three-dimensional echocardiographic recording of the left ventricle. Results show that strain develops predominantly along the principal direction with a much smaller transversal strain, indicating an underlying anisotropic, one-dimensional contractile activity. The strain-line pattern closely resembles the helical anatomical structure of the heart muscle. These findings demonstrate that cardiac contraction occurs along spatially variable paths and suggest a potential clinical significance of the principal strain concept for the assessment of mechanical cardiac function. The same concept can help in characterizing the relation between functional and anatomical properties of biological tissues, as well as fiber-reinforced engineered materials.
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Tumbarello M, Fiori B, Trecarichi EM, Posteraro P, Losito AR, De Luca A, Sanguinetti M, Fadda G, Cauda R, Posteraro B. Risk factors and outcomes of candidemia caused by biofilm-forming isolates in a tertiary care hospital. PLoS One 2012; 7:e33705. [PMID: 22479431 PMCID: PMC3316499 DOI: 10.1371/journal.pone.0033705] [Citation(s) in RCA: 149] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Accepted: 02/15/2012] [Indexed: 12/02/2022] Open
Abstract
Background Very few data exist on risk factors for developing biofilm-forming Candida bloodstream infection (CBSI) or on variables associated with the outcome of patients treated for this infection. Methods and Findings We identified 207 patients with CBSI, from whom 84 biofilm-forming and 123 non biofilm-forming Candida isolates were recovered. A case-case-control study to identify risk factors and a cohort study to analyze outcomes were conducted. In addition, two sub-groups of case patients were analyzed after matching for age, sex, APACHE III score, and receipt of adequate antifungal therapy. Independent predictors of biofilm-forming CBSI were presence of central venous catheter (odds ratio [OR], 6.44; 95% confidence interval [95% CI], 3.21–12.92) or urinary catheter (OR, 2.40; 95% CI, 1.18–4.91), use of total parenteral nutrition (OR, 5.21; 95% CI, 2.59–10.48), and diabetes mellitus (OR, 4.47; 95% CI, 2.03–9.83). Hospital mortality, post-CBSI hospital length of stay (LOS) (calculated only among survivors), and costs of antifungal therapy were significantly greater among patients infected by biofilm-forming isolates than those infected by non-biofilm-forming isolates. Among biofilm-forming CBSI patients receiving adequate antifungal therapy, those treated with highly active anti-biofilm (HAAB) agents (e.g., caspofungin) had significantly shorter post-CBSI hospital LOS than those treated with non-HAAB antifungal agents (e.g., fluconazole); this difference was confirmed when this analysis was conducted only among survivors. After matching, all the outcomes were still favorable for patients with non-biofilm-forming CBSI. Furthermore, the biofilm-forming CBSI was significantly associated with a matched excess risk for hospital death of 1.77 compared to non-biofilm-forming CBSI. Conclusions Our data show that biofilm growth by Candida has an adverse impact on clinical and economic outcomes of CBSI. Of note, better outcomes were seen for those CBSI patients who received HAAB antifungal therapy.
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Affiliation(s)
- Mario Tumbarello
- Institute of Infectious Diseases, Università Cattolica del Sacro Cuore, Rome, Italy.
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Di Tante V, Stefani L, Toncelli L, Robertina MC, De Luca A, Galanti G. Physical Activity As Prevention And Therapy: "Steps Of Health". Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000401510.68864.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Mercuri R, Stefani L, Di Tante V, Innocenti G, Toncelli L, Vono MC, Anania G, Caruso S, De Luca A, Galanti G. Adaptive Hypertrophy: A Five-years Echo Follow-up In Atheletes. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000401826.70460.b5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Toncelli L, De Luca A, Cappelli F, Cappelli B, Vono RMC, Galanti G. Left Ventricular Torsion By Speckle Tracking: A Study On Master Athletes With Mitral Valve Prolapse. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000402563.91649.a7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Stefani L, Pedrizzetti G, De Luca A, Toncelli L, Vono MCR, Mercuri R, Innocenti G, Cappelli B, Caselli L, Galanti G. Left Ventricle Rotation And Torsion In Athletes With Bicuspid Aortic Valve And Mild Aortic Regurgitation. Med Sci Sports Exerc 2010. [DOI: 10.1249/01.mss.0000385536.50455.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cappelli F, Toncelli L, Cappelli B, De Luca A, Stefani L, Maffulli N, Galanti G. Adaptative or maladaptative hypertrophy, different spatial distribution of myocardial contraction. Clin Physiol Funct Imaging 2010; 30:6-12. [DOI: 10.1111/j.1475-097x.2009.00896.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Galanti G, Toncelli L, Del Furia F, Stefani L, Cappelli B, De Luca A, Vono MCR. Tissue doppler imaging can be useful to distinguish pathological from physiological left ventricular hypertrophy: a study in master athletes and mild hypertensive subjects. Cardiovasc Ultrasound 2009; 7:48. [PMID: 19845938 PMCID: PMC2774305 DOI: 10.1186/1476-7120-7-48] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2009] [Accepted: 10/21/2009] [Indexed: 01/19/2023] Open
Abstract
Background Transthoracic echocardiography left ventricular wall thickness is often increased in master athletes and it results by intense physical training. Left Ventricular Hypertrophy can also be due to a constant pressure overload. Conventional Pulsed Wave (PW) Doppler analysis of diastolic function sometimes fails to distinguish physiological from pathological LVH. The aim of this study is to evaluate the role of Pulsed Wave Tissue Doppler Imaging in differentiating pathological from physiological LVH in the middle-aged population. Methods we selected a group of 80 master athletes, a group of 80 sedentary subjects with essential hypertension and an apparent normal diastolic function at standard PW Doppler analysis. The two groups were comparable for increased left ventricular wall thickness and mass index (134.4 ± 19.7 vs 134.5 ± 22.1 gr/m2; p > .05). Diastolic function indexes using the PW technique were in the normal range for both. Results Pulsed Wave TDI study of diastolic function immediately distinguished the two groups. While in master athletes the diastolic TDI-derived parameters remained within normal range (E' 9.4 ± 3.1 cm/sec; E/E' 7.8 ± 2.1), in the hypertensive group these parameters were found to be constantly altered, with mean values and variation ranges always outside normal validated limits (E' 7.2 ± 2.4 cm/sec; E/E' 10.6 ± 3.2), and with E' and E/E' statistically different in the two groups (p < .001). Conclusion Our study showed that the TDI technique can be an easy and validated method to assess diastolic function in differentiating normal from pseudonormal diastolic patterns and it can distinguish physiological from pathological LVH emphasizing the eligibility certification required by legal medical legislation as in Italy.
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Affiliation(s)
- Giorgio Galanti
- Postgraduate School of Sports Medicine-Sports Medicine Laboratory, University of Florence, Florence, Italy.
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21
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Stefani L, Pedrizzetti G, De Luca A, Mercuri R, Innocenti G, Galanti G. Real-time evaluation of longitudinal peak systolic strain (speckle tracking measurement) in left and right ventricles of athletes. Cardiovasc Ultrasound 2009; 7:17. [PMID: 19356233 PMCID: PMC2676253 DOI: 10.1186/1476-7120-7-17] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Accepted: 04/08/2009] [Indexed: 01/20/2023] Open
Abstract
Background Strain, and particularly Longitudinal Peak Systolic Strain (LPSS), plays a role in investigating the segmental and overall contractility of the heart which is a particularly interesting feature in athletes in whom regular training determines several morphological and functional modifications in both the ventricles, that normally work at different loads. Speckle tracking techniques assess the LPSS of LV and RV from B-mode imaging in real time, with uniform accuracy in all segments, and can verify the possible dissimilar segmental contributions of the two chambers to overall myocardial contraction. The aim of the study is to quantify the LPSS in real time in both the ventricles in order to estimate any possible different deformation properties in them during a systolic period. Methods 32 subjects (20 athletes and 18 controls) were submitted to a standard echocardiographic examination at rest and after a Hand Grip (HG) stress. From a four-chamber-view image, the LPSS parameter was measured with Speckle Tracking analysis in the basal and medium-apical segments of the two ventricles, at rest and after HG. Results In both athletes and controls, LPSS values were significantly higher in the RV of athletes (RV LPSS medium-apical -23.87 ± 4.94; basalfreewall -25.04 ± 4.12 at rest) and controls (RV LPSSmedium-apical -25.21 ± 4.97; basalfreewall -28.69 ± 4.62 at rest) than in the LV of both (athletes LV LPSS medium-apical -18.14 ± 4.16; basallateralwall -16.05 ± 12.32; controls medium-apical -18.81 ± 2.64; basallateralwall -19.74 ± 3.84) With the HG test a significant enhancement of the LPSS(with P < .05) in the medium-apical segments of LV and RV was evident, but only in athletes; there was no modification of the standard echo-parameters in either group. Conclusion ST analysis is an easy method for investigating the contractility of the RV through deformation parameters, showing greater involvement of the RV than LV at rest. In athletes only, after isometric stress the two ventricles show particular myocardial deformation properties of the regions around the apex where the curvature of the wall is more marked. The clinical application of this new approach in athletes and normal subjects requires further investigation.
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Affiliation(s)
- Laura Stefani
- Sport Medicine Center, University of Florence, Italy.
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22
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Stefani L, De Luca A, Maffulli N, Mercuri R, Innocenti G, Suliman I, Toncelli L, Vono MC, Cappelli B, Pedri S, Pedrizzetti G, Galanti G. Speckle tracking for left ventricle performance in young athletes with bicuspid aortic valve and mild aortic regurgitation. Eur J Echocardiogr 2009; 10:527-31. [PMID: 19174444 DOI: 10.1093/ejechocard/jen332] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIMS Longitudinal peak systolic strain (LPSS) quantifies regional and global heart function. Few data are available on left ventricle (LV) performance in young athletes with bicuspid aortic valve (BAV), where a pattern of mild aortic insufficiency is relatively frequent, and the ejection fraction (EF) is often normal for a long time. We report the measurement of LV strain in young BAV athletes. METHODS AND RESULTS Three groups (20 athletes with BAV, 20 healthy athletes, and 20 sedentary healthy subjects, all aged 25 +/- 3 years) underwent standard echo examination to evaluate LPSS at the basal and medium-apical segments of the lateral wall (LW) and interventricular septum (IVS) of the LV. LPSS was within the normal range; however, in BAV athletes, the LPSS of the basal segments tended to be lower (S%IVS(basal), -17.7 +/- 2.7; S%LW(basal), -14.2 +/- 2.2; S%IVS(med-apic), -21 +/- 3.5; S%LW(med-apic), -18.8 +/- 4.2), producing a gradient from basal to apical regions. The EF was normal in all subjects. CONCLUSION Young trained BAV athletes have normal LV performance. Nevertheless, these athletes tend to have lower strain than healthy subjects in the LV basal segments. The clinical implications of this finding are uncertain and require further investigation.
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Affiliation(s)
- Laura Stefani
- Non-invasive Cardiac Laboratory, Department of Sports Medicine Centre, University of Florence, Florence, Italy.
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23
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Cinti C, Claudio PP, Luca AD, Cuccurese M, Howard CM, D'Esposito M, Paggi MG, Sala DL, Azzoni L, Halazonetis TD, Giordano A, Maraldi NM. A serine 37 mutation associated with two missense mutations at highly conserved regions of p53 affect pro-apoptotic genes expression in a T-lymphoblastoid drug resistant cell line. Oncogene 2000; 19:5098-105. [PMID: 11042698 DOI: 10.1038/sj.onc.1203848] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The p53 protein accumulates rapidly through post-transcriptional mechanisms following cellular exposure to DNA damaging agents and is also activated as a transcription factor leading to growth arrest or apoptosis. Phosphorylation of p53 occurs after DNA damage thereby modulating its activity and impeding the interaction of p53 with its negative regulator oncogene Mdm2. The serines 15 and 37 present in the amino terminal region of p53 are phosphorylated by the DNA-dependent protein kinase (DNA-PK) in response to DNA damage. In order to verify if specific p53 mutations occur in the multi-drug resistance phenotype, we analysed the p53 gene in two T-lymphoblastoid cell lines, CCRF-CEM and its multi-drug-resistant clone CCRF-CEM VLB100, selected for resistance to vinblastine sulfate and cross-resistant to other cytotoxic drugs. Both cell lines showed two heterozygous mutations in the DNA binding domain at codons 175 and 248. The multi-drug resistant cell line, CCRF-CEM VLB100, showed an additional mutation that involves the serine 37 whose phosphorylation is important to modulate the protein activity in response to DNA damage. The effects of these mutations on p53 transactivation capacity were evaluated. The activity of p53 on pro-apoptotic genes expression in response to DNA damage induced by (-irradiation, was affected in the vinblastine (VLB) resistant cell line but not in CCRF-CEM sensitive cell line resulting in a much reduced apoptotic cell death of the multi-drug resistant cells.
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MESH Headings
- Amino Acid Substitution
- Antibiotics, Antineoplastic/pharmacology
- Antineoplastic Agents, Phytogenic/pharmacology
- Apoptosis/genetics
- Base Sequence
- Cell Survival/radiation effects
- Conserved Sequence
- DNA, Neoplasm/genetics
- DNA, Neoplasm/metabolism
- DNA, Neoplasm/radiation effects
- Dactinomycin/pharmacology
- Doxorubicin/pharmacology
- Drug Resistance, Multiple/genetics
- Drug Resistance, Neoplasm/genetics
- Exons
- Gene Expression Regulation, Leukemic/genetics
- Genes, p53/genetics
- Humans
- Leukemia, T-Cell/genetics
- Leukemia, T-Cell/metabolism
- Leukemia, T-Cell/pathology
- Mutation, Missense
- Polymorphism, Single-Stranded Conformational
- Radiation Tolerance/genetics
- Serine/genetics
- Tumor Cells, Cultured/drug effects
- Tumor Cells, Cultured/radiation effects
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
- Tumor Suppressor Protein p53/physiology
- Vinblastine/pharmacology
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Affiliation(s)
- C Cinti
- Institute of Normal and Pathologic Cytomorphology, CNR, c/o IOR, 40136 Bologna, Italy
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Favaloro B, Tamburro A, Angelucci S, Luca AD, Melino S, di Ilio C, Rotilio D. Molecular cloning, expression and site-directed mutagenesis of glutathione S-transferase from Ochrobactrum anthropi. Biochem J 1998; 335 ( Pt 3):573-9. [PMID: 9794797 PMCID: PMC1219818 DOI: 10.1042/bj3350573] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The gene coding for a novel glutathione S-transferase (GST) has been isolated from the bacterium Ochrobactrum anthropi. A PCR fragment of 230 bp was obtained using oligonucleotide primers deduced from N-terminal and 'internal' sequences of the purified enzyme. The gene was obtained by screening of a genomic DNA partial library from O. anthropi constructed in pBluescript with a PCR fragment probe. The gene encodes a protein (OaGST) of 201 amino acids with a calculated molecular mass of 21738 Da. The product of the gene was expressed and characterized; it showed GST activity with substrates 1-chloro-2, 4-dinitrobenzene (CDNB), p-nitrobenzyl chloride and 4-nitroquinoline 1-oxide, and glutathione-dependent peroxidase activity towards cumene hydroperoxide. The overexpressed product of the gene was also confirmed to have in vivo GST activity towards CDNB. The interaction of the recombinant GST with several antibiotics indicated that the enzyme is involved in the binding of rifamycin and tetracycline. The OaGST amino acid sequence showed the greatest identity (45%) with a GST from Pseudomonas sp. strain LB400. A serine residue in the N-terminal region is conserved in almost all known bacterial GSTs, and it appears to be the counterpart of the catalytic serine residue present in Theta-class GSTs. Substitution of the Ser-11 residue resulted in a mutant OaGST protein lacking CDNB-conjugating activity; moreover the mutant enzyme was not able to bind Sepharose-GSH affinity matrices.
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Affiliation(s)
- B Favaloro
- Istituto di Ricerche Farmacologiche Mario Negri, Consorzio Mario Negri Sud, 'G. Paone' Environmental Health Center, Department of Environmental Sciences, 66030 Santa Maria Imbaro, Italy.
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