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De Vitis R, Passiatore M, Cilli V, Maffeis J, Milano G, Taccardo G. Intramedullary nailing for treatment of forearm non-union: Is it useful? - A case series. J Orthop 2020; 20:97-104. [PMID: 32025132 PMCID: PMC6997666 DOI: 10.1016/j.jor.2020.01.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 01/23/2023] Open
Abstract
INTRODUCTION Intramedullary osteosynthesis is often considered a second-order method for treatment of forearm non-union. METHODS We evaluated clinical and functional results from 49 patients affected by radio and/or ulna non-union treated using intramedullary nailing, with possible tricortical autologous bone grafting. Healing rate (primary outcome), healing time and functional status have been assessed. RESULTS Healing was observed in 46 cases (93.9%), the average healing time was 6.3 (SD ± 2.5) months. Excellent result (Anderson score) was reached in 38 cases (77.6%), satisfactory in 7 cases (14.3%). CONCLUSIONS Forearm non-unions represent a therapeutic challenge. Intramedullary nailing is a successful option of treatment.
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Affiliation(s)
- Rocco De Vitis
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
- Università Cattolica del Sacro Cuore, Roma, Italy
- Istituto di Clinica Ortopedica, Italy
| | - Marco Passiatore
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
- Istituto di Clinica Ortopedica, Italy
| | - Vitale Cilli
- Centre Hôpitalier de la Haute Senne, Soignies, Belgium
| | | | | | - Giuseppe Taccardo
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
- Università Cattolica del Sacro Cuore, Roma, Italy
- Istituto di Clinica Ortopedica, Italy
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52
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Masci G, Cazzato G, Milano G, Ciolli G, Malerba G, Perisano C, Greco T, Osvaldo P, Maccauro G, Liuzza F. The stiff elbow: Current concepts. Orthop Rev (Pavia) 2020; 12:8661. [PMID: 32913596 PMCID: PMC7459370 DOI: 10.4081/or.2020.8661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 06/17/2020] [Indexed: 01/14/2023] Open
Abstract
Elbow stiffness is defined as any loss of movement that is greater than 30° in extension and less than 120° in flexion. Causes of elbow stiffness can be classified as traumatic or atraumatic and as congenital or acquired. Any alteration affecting the stability elements of the elbow can lead to a reduction in the arc of movement. The classification is based on the specific structures involved (Kay’s classification), anatomical location (Morrey’s classification), or on the degree of severity of rigidity (Vidal’s classification). Diagnosis is the result of a combination of medical history, physical examination (evaluating both active and passive movements), and imaging. The loss of soft tissue elasticity could be the result of bleeding, edema, granulation tissue formation, and fibrosis. Preventive measures include immobilization in extension, use of post-surgical drain, elastic compression bandage and continuous passive motion. Conservative treatment is used when elbow stiffness has been present for less than six months and consists of the use of serial casts, static or dynamic splints, CPM, physical therapy, manipulations and functional re-education. If conservative treatment fails or is not indicated, surgery is performed. Extrinsic rigidity cases are usually managed with an open or arthroscopic release, while those that are due to intrinsic causes can be managed with arthroplasties. The elbow is a joint that is particularly prone to developing stiffness due to its anatomical and biomechanical complexity, therefore the treatment of this pathology represents a challenge for the physiotherapist and the surgeon alike.
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Affiliation(s)
- Giulia Masci
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome.,Università Cattolica del Sacro Cuore, Rome
| | - Gianpiero Cazzato
- Università Cattolica del Sacro Cuore, Rome.,Artrogruppo, Clinica San Feliciano, Rome
| | - Giuseppe Milano
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia.,Department of Bone and Joint Surgery, Spedali Civili, Brescia, Italy
| | - Gianluca Ciolli
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome.,Università Cattolica del Sacro Cuore, Rome
| | - Giuseppe Malerba
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome
| | - Carlo Perisano
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome
| | - Tommaso Greco
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome.,Università Cattolica del Sacro Cuore, Rome
| | - Palmacci Osvaldo
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome
| | - Giulio Maccauro
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome.,Università Cattolica del Sacro Cuore, Rome
| | - Francesco Liuzza
- Department of Orthopaedics, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome
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Casiraghi A, Domenicucci M, Cattaneo S, Maggini E, Albertini F, Avanzini S, Pansi Marini M, Galante C, Guizzi P, Milano G. Operational strategies of a trauma hub in early coronavirus disease 2019 pandemic. Int Orthop 2020; 44:1511-1518. [PMID: 32506141 PMCID: PMC7275124 DOI: 10.1007/s00264-020-04635-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 05/01/2020] [Accepted: 05/12/2020] [Indexed: 01/13/2023]
Abstract
Purpose The “Spedali Civili”, one of the largest hospitals in the Italian region most affected by SARS-CoV-2 infection, is managing a large number of traumatic injuries. The objective of this article is to share our operational protocols to deliver an appropriate hospital trauma care in the context of the COVID-19 pandemic. Methods We changed our work shifts, in consideration of the high number of patients; colleagues from smaller hospitals in the area joined us to increase the number of surgeons available. Thanks to the collaboration between orthopaedists, anaesthesiologists, and nurses, we created a flow chart and separate routes (in the emergency room, in the wards, and in the operating rooms) to optimize patient management. Our protocols allow us to always provide healthcare professionals with the correct personal protective equipment for the task they are performing. Results Our strategies proved to be practical and feasible. Having a well thought plan helped us to provide for the most robust response possible. We have not yet been able to study the effectiveness of our protocols, and our recommendations may not be applicable to all healthcare facilities. Nonetheless, sharing our early experience can help other institutions conducting and adapting such plans more quickly. Conclusions Having a clear strategy during the COVID-19 pandemic kept our systems resilient and effective and allowed us to provide high-quality trauma care. We offer this approach for other institutions to adopt and adapt to their local setting.
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Affiliation(s)
- Alessandro Casiraghi
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Marco Domenicucci
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy.
| | - Stefano Cattaneo
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Emanuele Maggini
- Residency Program in Orthopedics and Traumatology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Fabio Albertini
- Department of Anesthesiology and Reanimation, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Stefania Avanzini
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Manuela Pansi Marini
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Claudio Galante
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Pierangelo Guizzi
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
| | - Giuseppe Milano
- Department of Bone and Joint Surgery, ASST Spedali Civili, Piazzale Spedali Civili 1, 25123, Brescia, BS, Italy
- Department of Medical and Surgical Specialties, Radiological Sciences, and Public Health, University of Brescia, Viale Europa 11, 25123, Brescia, BS, Italy
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Bore SL, Kolli HB, De Nicola A, Byshkin M, Kawakatsu T, Milano G, Cascella M. Hybrid particle-field molecular dynamics under constant pressure. J Chem Phys 2020; 152:184908. [PMID: 32414244 DOI: 10.1063/5.0007445] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Hybrid particle-field methods are computationally efficient approaches for modeling soft matter systems. So far, applications of these methodologies have been limited to constant volume conditions. Here, we reformulate particle-field interactions to represent systems coupled to constant external pressure. First, we show that the commonly used particle-field energy functional can be modified to model and parameterize the isotropic contributions to the pressure tensor without interfering with the microscopic forces on the particles. Second, we employ a square gradient particle-field interaction term to model non-isotropic contributions to the pressure tensor, such as in surface tension phenomena. This formulation is implemented within the hybrid particle-field molecular dynamics approach and is tested on a series of model systems. Simulations of a homogeneous water box demonstrate that it is possible to parameterize the equation of state to reproduce any target density for a given external pressure. Moreover, the same parameterization is transferable to systems of similar coarse-grained mapping resolution. Finally, we evaluate the feasibility of the proposed approach on coarse-grained models of phospholipids, finding that the term between water and the lipid hydrocarbon tails is alone sufficient to reproduce the experimental area per lipid in constant-pressure simulations and to produce a qualitatively correct lateral pressure profile.
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Affiliation(s)
- Sigbjørn Løland Bore
- Department of Chemistry, and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
| | - Hima Bindu Kolli
- Department of Chemistry, and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
| | - Antonio De Nicola
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata-ken 992-8510, Japan
| | - Maksym Byshkin
- Institute of Computational Science, Università Della Svizzera Italiana, 6900 Lugano, Switzerland
| | - Toshihiro Kawakatsu
- Department of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Giuseppe Milano
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata-ken 992-8510, Japan
| | - Michele Cascella
- Department of Chemistry, and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O. Box 1033, Blindern, 0315 Oslo, Norway
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Evesque L, Francois E, Milano G. Cetuximab-related skin toxicity and efficacy: do we understand the mechanisms? Ann Oncol 2020; 31:964-965. [PMID: 32275949 DOI: 10.1016/j.annonc.2020.03.301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 11/17/2022] Open
Affiliation(s)
- L Evesque
- Department of Medicine, Nice, France
| | | | - G Milano
- Oncopharmacology Unit, Centre Antoine Lacassagne, Nice, France.
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56
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Sparnacci K, Chiarcos R, Gianotti V, Laus M, Giammaria TJ, Perego M, Munaò G, Milano G, De Nicola A, Haese M, Kreuzer LP, Widmann T, Müller-Buschbaum P. Effect of Trapped Solvent on the Interface between PS- b-PMMA Thin Films and P(S- r-MMA) Brush Layers. ACS Appl Mater Interfaces 2020; 12:7777-7787. [PMID: 31967449 DOI: 10.1021/acsami.9b20801] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The orientation of block copolymer (BCP) features in thin films can be obtained by spin-coating a BCP solution on a substrate surface functionalized by a polymer brush layer of the appropriate random copolymer (RCP). Although this approach is well established, little work reporting the amount and distribution of residual solvent in the polymer film after the spin-coating process is available. Moreover, no information can be found on the effect of trapped solvent on the interface between the BCP film and RCP brush. In this work, systems consisting of poly(styrene)-b-poly(methyl methacrylate) thin films deposited on poly(styrene-r-methyl methacrylate) brush layers are investigated by combining neutron reflectivity (NR) experiments with simulation techniques. An increase in the amount of trapped solvent is observed by NR as the BCP film thickness increases accompanied by a significant decrease of the interpenetration length between the BCP and RCP, thus suggesting that the interpenetration between grafted chains and block copolymer chains is hampered by the solvent. Hybrid particle-field molecular dynamics simulations of the analyzed system confirm the experimental observations and demonstrate a clear correlation between the interpenetration length and the amount of trapped solvent.
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Affiliation(s)
- Katia Sparnacci
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT) , Universitá del Piemonte Orientale "A. Avogadro" , Viale T. Michel 11 , 15121 Alessandria , Italy
| | - Riccardo Chiarcos
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT) , Universitá del Piemonte Orientale "A. Avogadro" , Viale T. Michel 11 , 15121 Alessandria , Italy
| | - Valentina Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT) , Universitá del Piemonte Orientale "A. Avogadro" , Viale T. Michel 11 , 15121 Alessandria , Italy
| | - Michele Laus
- Dipartimento di Scienze e Innovazione Tecnologica (DISIT) , Universitá del Piemonte Orientale "A. Avogadro" , Viale T. Michel 11 , 15121 Alessandria , Italy
| | - Tommaso J Giammaria
- University Grenoble-Alpes, CEA, LETI , 17 avenue de Martyrs , Grenoble FR 38054 , France
| | - Michele Perego
- Laboratorio MDM, IMM-CNR , Via C. Olivetti 2 , 20864 Agrate Brianza , Italy
| | - Gianmarco Munaò
- Dipartimento di Chimica e Biologia , Università di Salerno , Via Giovanni Paolo II, 132 , I-84084 Fisciano , SA , Italy
| | - Giuseppe Milano
- Department of Organic Materials Science , Yamagata University , 4-3-16 Jonan Yonezawa , Yamagata , Yamagata-ken 992-8510 , Japan
| | - Antonio De Nicola
- Department of Organic Materials Science , Yamagata University , 4-3-16 Jonan Yonezawa , Yamagata , Yamagata-ken 992-8510 , Japan
| | - Martin Haese
- Helmholtz-Zentrum Geesthacht at Heinz Maier-Leibnitz Zentrum , Lichtenbergstr. 1 , 85747 Garching , Germany
| | - Lucas P Kreuzer
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Tobias Widmann
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik-Department , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
- Heinz Maier-Leibnitz Zentrum (MLZ) , Technische Universität München , Lichtenbergstr. 1 , 85748 Garching , Germany
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57
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Ciccolini J, Del Re M, Danesi R, Milano G, Schellens JHM, Raymond E. Predicting fluoropyrimidine-related toxicity: turning wish to will, the PAMM-EORTC position. Ann Oncol 2019; 29:1893-1894. [PMID: 30032203 DOI: 10.1093/annonc/mdy258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J Ciccolini
- PAMM Group, European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium.
| | - M Del Re
- PAMM Group, European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
| | - R Danesi
- PAMM Group, European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
| | - G Milano
- PAMM Group, European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
| | - J H M Schellens
- PAMM Group, European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
| | - E Raymond
- PAMM Group, European Organisation for Research and Treatment of Cancer (EORTC), Brussels, Belgium
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Munaò G, De Nicola A, Müller-Plathe F, Kawakatsu T, Kalogirou A, Milano G. Influence of Polymer Bidispersity on the Effective Particle–Particle Interactions in Polymer Nanocomposites. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01367] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Gianmarco Munaò
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II, 132, I-84084 Fisciano (SA), Italy
| | - Antonio De Nicola
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
| | - Florian Müller-Plathe
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie and Center of Smart Interfaces, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Toshihiro Kawakatsu
- Department of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Andreas Kalogirou
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie and Center of Smart Interfaces, Technische Universität Darmstadt, Alarich-Weiss-Str. 8, 64287 Darmstadt, Germany
| | - Giuseppe Milano
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II, 132, I-84084 Fisciano (SA), Italy
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
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Stadiotti I, Sommariva E, Casella M, Catto V, Dello Russo A, Arnaboldi L, Milano G, Scopece A, Birchmeier W, Koenig E, Turnu L, Corsini A, Rossini A, Tondo C, Pompilio G. 2288Oxidized LDL/CD36/PPARg circuitry is a trigger of adipogenesis in arrhythmogenic cardiomyopathy. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Arrhythmogenic Cardiomyopathy (ACM) is a genetic condition hallmarked by ventricular fibro-fatty replacement and arrhythmias. Cardiac mesenchymal stromal cells (C-MSC) differentiate into adipocytes in ACM hearts, through the activation of PPARγ, caused by ACM mutations (e.g. PKP2). The clinical phenotype of ACM is variable for poorly understood reasons. The only recognized cofactor is physical exercise, which is known to increases oxidative stress. An accepted marker of exercise-induced oxidative stress is 13HODE, a component of oxLDL and direct activator of PPARγ. In macrophages, during foam cell formation, 13HODE creates a feed-forward loop increasing both PPARγ and the oxLDL receptor CD36, resulting in fat accumulation.
Purpose
To investigate oxLDL effects on ACM adipogenesis and to dissect the involved pathways.
Methods
We analyzed plasmas (n=42) and ventricular tissues (n=4) of ACM patients and matched healthy controls (HC). For in vitro experiments, ACM and HC C-MSC (n=10) have been used, while in vivo experiments have been conducted in heterozygous Pkp2 knock-out mice (Pkp2+/−; n=10).
Results
We observed higher plasma oxLDL in ACM patients compared to HC (ACM 246.70±55.89 vs HC 102.5±17.95ng/ml; p=0.019). oxLDL levels also discriminate between ACM patients with overt phenotype and their unaffected relatives carriers of the same causative mutations (p=0.03). We observed higher oxidative stress (MDA intensity 40.87±11.76 fold; p=0.015) and CD36 levels (14.72±2.10 fold; p=0.0007) in ACM ventricular tissue, compared to HC.
In basal conditions, ACM C-MSC showed greater oxidative stress (MDA intensity 8.83±2.78 fold p=0.017) and higher expression of PPARγ (1.47±0.14 fold; p=0.009) compared to HC C-MSC. The adipogenic stimulation led to a parallel increase of CD36 and lipid accumulation, mainly in ACM C-MSC (slopes statistically different p=0.016). OxLDL and 13HODE administration increased lipid accumulation in ACM C-MSC (ORO staining ACM vs ACM+oxLDL p=0.01; ACM vs ACM+13HODE p=0.014). On the contrary, the antioxidant N-Acetylcysteine (NAC) prevented lipid accumulation in ACM C-MSC (ORO staining ACM+13HODE vs ACM+13HODE+NAC p=0.0009). Through CD36 silencing of ACM C-MSC, we obtained a significantly lower lipid accumulation than non-silenced cells (ORO staining 0.35±0.10 fold; p=0.003).
Pkp2+/− mice do not spontaneously accumulate adipocytes in the heart, however Pkp2+/− C-MSC are more prone to lipid accumulation in vitro than WT cells (p=0.007). Accordingly, mice have low plasma oxLDL and cardiac oxidative stress. By increasing plasma cholesterol and oxidative stress through high fat diet, we observed fibro-fatty substitution in Pkp2+/− hearts (p=0.046).
Figure 1
Conclusions
These findings reveal a modulatory role of oxidized lipids in ACM adipogenesis at a cellular, tissue and clinical level, enlightening novel targets for pharmacological strategies to prevent adipogenic substitution and consequent ACM clinical phenotypes.
Acknowledgement/Funding
Telethon Foundation; Italian Ministry of Health
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Affiliation(s)
- I Stadiotti
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | - E Sommariva
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | - M Casella
- Cardiology Center Monzino IRCCS, Cardiac Arrhythmia Research Center, Milan, Italy
| | - V Catto
- Cardiology Center Monzino IRCCS, Cardiac Arrhythmia Research Center, Milan, Italy
| | - A Dello Russo
- Cardiology Center Monzino IRCCS, Cardiac Arrhythmia Research Center, Milan, Italy
| | | | - G Milano
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | - A Scopece
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | - W Birchmeier
- Max Delbruck Center for Molecular Medicine, Berlin, Germany
| | | | - L Turnu
- Cardiology Center Monzino IRCCS, Unit of Metabolomics and Cellular Biochemistry of Atherothrombosis, Milan, Italy
| | - A Corsini
- University of Milan, DISFeB, Milan, Italy
| | | | - C Tondo
- Cardiology Center Monzino IRCCS, Cardiac Arrhythmia Research Center, Milan, Italy
| | - G Pompilio
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
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Reinero M, Beghetti M, Samaja M, Milano G. P6377Cardiopulmonary effects of nitric oxide supplementation in a model of chronic hypoxia pulmonary hypertension. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Objective
We previously demonstrated that the inhibition of phosphodiesterase type-5, an enzyme that degrades cGMP into inactive 5'-GMP, attenuates pulmonary remodeling and right ventricular (RV) hypertrophy (RVH) during exposure to chronic hypoxia (CH). The nitric oxide (NO) pathway is thought to play a major role in these changes. In this study, we investigate whether L-Arginine (L-ARG), a substrate of endothelial NO synthase (eNOS) and molsidomine (MOL), a NO donor, might alleviate the cardiovascular and pulmonary dysfunction led by CH.
Methods
Male rats (n=80; 10/group) were maintained in normoxic (21% O2) or hypoxic chambers (10% O2) for 14 days. Hypoxic rats were subdivided in four groups: untreated control, treated with L-ARG (45 mg/kg), eNOS inhibitor N-nitro-L-arginine methyl ester (L-NAME, 45 mg/kg) or MOL (15 mg/kg). Drugs were given daily in the drinking water. After sacrifice, we measured RV systolic pressure (RVSP), RV contractility (dP/dt), RVH, the lung/body weight ratio, the pulmonary vessels medial wall thickness, and the cardiac and pulmonary eNOS phosphorylation.
Results
Although CH increased RVSP, RV contractility and RVH, these increases were attenuated by L-ARG and MOL. Whereas L-ARG attenuated the RVH increase, MOL and L-NAME were ineffective. No treatment prevented the increase in lung/body weight ratio. Under all conditions, the lung tissue water content was unchanged, indicating no edema development. By contrast, CH rats developed a marked increase in medial wall thickness of small (0–100 mm) pulmonary arteries, while larger arteries were not affected. This increase was attenuated by L-ARG or MOL. Although CH decreased cardiac and pulmonary phosphorylated eNOS, L-ARG and MOL restored the normoxic level.
Conclusions
NO supplementation during CH attenuates RVSP, RVH and pulmonary remodeling, probably due to increased phosphorylation of eNOS. Despite normalizing RVSP, MOL does not influence RVH development.
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Affiliation(s)
- M Reinero
- University Hospital Centre Vaudois (CHUV), Cardiovascular research, Lausanne, Switzerland
| | - M Beghetti
- Geneva University Hospitals, Unité de Cardiologie Pédiatrique,, Geneva, Switzerland
| | - M Samaja
- San Paolo Hospital, Milan, Italy
| | - G Milano
- University Hospital Centre Vaudois (CHUV), Cardiovascular research, Lausanne, Switzerland
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Biemmi V, Milano G, Ciullo A, Cervio E, Dei Cas M, Paroni R, Tallone T, Pedrazzini G, Moccetti T, Longnus SL, Vassalli G, Barile L. P2585Cardiac dysfunction after myocardial infarction: role of pro-inflammatory extracellular vesicles. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Myocardial infarction (MI) is associated with significant loss of cardiomyocytes (CM), which are replaced by a fibrotic scar. Necrotic CM release damage-associated proteins that stimulate innate immune pathways and macrophages (MΦ) tissue infiltration, which drives to the progression of inflammation and myocardial remodeling process. Both, loss of CM and inflammatory response are determinants of the long term ventricle remodeling and heart failure. Circulating inflammatory extracellular vesicles (EV) play a crucial role in the acute and chronic phases of MI, in terms of inflammatory progression. In this study we examined whether reducing the generation of inflammatory EV within few hours from the ischemic event may ameliorate cardiac outcome at short and long time-point in LAD rat model.
Methods
Before coronary artery ligation, rats were injected IP with a chemical inhibitor of neutral sphingomyelinase (nSMase) which is essential for the biogenesis and release of EVs. The number and size profile of plasma-derived EV was assessed by NTA analysis at baseline and 24hrs after MI. Multiple EV cytokine levels were simultaneously determined using enzyme-linked immunosorbent assay (ELISA)-based protein array technology. Heart global function was assessed by echocardiography and hemodynamic analysis performed at 7, 14 and 28 days after MI. Cytotoxic effects of circulating EV were evaluated ex-vivo in a Langedorff, system by measuring the level of cardiac troponin I (cTnI) in the perfusate. Mechanisms undergoing cytotoxic effects of EV derived from pro-inflammatory MΦ (MΦM1) were studied in vitro into primary rat neonatal CM.
Results
The induction of MI and the consequent inflammation, dramatically increase the number of circulating EV carrying inflammatory cytokines such as IL1α, ILβ and Rantes. Preventive inhibition nSMase significantly reduced the boost of inflammatory EV and cytokines in treated group as compared to control animals. The reduction of circulating EV post MI results in preserved LV ejection fraction at 7 and 28 days post-MI as compared to control group. Hemodynamic analysis confirmed functional recovery by displaying a higher velocity of LV relaxation and an improved contractility capacity in treated versus control group. The number of infiltrating CD68+ monocytes/macrophages in the infarct area was significantly reduced. Post-MI circulating EV induce cell death in adult CM when added to the perfusate of Langendorff, as assessed by the incresed level of cTnI into media. In vitro MΦM1-EV activated nuclear translocation of NF-kB. Specific inhibition of TLR4 receptor activity abrogated NF-kB translocation and reduced cell death. Indicating that the axis TRL4-NF-kB is essential in EV-mediated CM death.
Conclusions
Systemic inhibition of EV release during the acute phase of MI preserves heart function in an animal model of LAD. These findings suggest detrimental effects of exosomes in the acute phase of MI.
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Affiliation(s)
- V Biemmi
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, University of Svizzera Italiana, Laboratory of Cellular and Molecular Cardiology, Lugano, Switzerland
| | - G Milano
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, University of Svizzera Italiana, Laboratory of Cellular and Molecular Cardiology, Lugano, Switzerland
| | - A Ciullo
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, University of Svizzera Italiana, Laboratory of Cellular and Molecular Cardiology, Lugano, Switzerland
| | - E Cervio
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, University of Svizzera Italiana, Laboratory of Cellular and Molecular Cardiology, Lugano, Switzerland
| | - M Dei Cas
- University of Milan, Department of Health Sciences, Milano, Italy
| | - R Paroni
- University of Milan, Department of Health Sciences, Milano, Italy
| | - T Tallone
- Foundation for cardiological research and education, Laboratory of cellular and biomedical technology, Taverne, Switzerland
| | - G Pedrazzini
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, Lugano, Switzerland
| | - T Moccetti
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, Lugano, Switzerland
| | - S L Longnus
- Bern University Hospital, Department of Cardiovascular Surgery, Bern, Switzerland
| | - G Vassalli
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, University of Svizzera Italiana, Laboratory of Cellular and Molecular Cardiology, Lugano, Switzerland
| | - L Barile
- Fondazione Cardiocentro Ticino and Faculty of Biomedicine, University of Svizzera Italiana, Laboratory of Cellular and Molecular Cardiology, Lugano, Switzerland
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Altomare C, Biemmi V, Torre E, Rocchetti M, Ferrandi M, Pernigoni N, Barile L, Milano G, Vassalli G. P1622Cancer drugs induce functional and structural impairment in adult cardiomyocytes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
The addition of anti-human epidermal growth factor receptor 2 (HER2; ErbB2) monoclonal antibody Trastuzumab (TRZ) to Doxorubicin (DOXO) chemotherapy is associated with a synergistic increase in cardiac toxicity. While previous studies have addressed the toxicity of both agents on isolated cardiomyocytes (CMs), little is known regarding this process in vivo, especially with respect to electrophysiological changes.
Purpose
To investigate electrical and structural changes in LV and RV CMs using an in vivo rat model of DOXO/TRZ cardiotoxicity.
Methods
Rats received 6 IP injections of either DOXO or TRZ over a 2-week period, or 6 doses of DOXO followed by 6 doses of TRZ (COMBO), or saline as a control. In-vivo echocardiography was performed. Electrical activity and Ca2+ handling were assessed in LV and RV CMs from rat hearts. Single cell patch-clamp and field stimulation experiments were performed. Spontaneous sarcoplasmic reticulum Ca2+ release events (Ca2+ sparks) were recorded at x100 magnification in line-scan mode (sampling rate 0.7 kHz) from 2 μM Fluo4-AM loaded CMs. To assess T-tubular disarray, CMs were incubated with di-3-ANEPPDHQ and periodic component was quantified by Fast Fourier Transform (FFT) analysis of confocal microscopy images.
Results
DOXO, and to a greater extent COMBO treatment was associated with significant increases in both LV end-systolic and end-diastolic volumes, and decreases in LVEF and fractional shortening. By contrast, TRZ alone merely increased LV end-systolic volume. Electrophysiological studies showed increases in action potential duration (APD), beat-to-beat variability of repolarization (BVR), delayed after depolarizations (DADs), and Ca2+-sparks in both DOXO and COMBO groups. Stimulated intracellular Ca2+ transients (1,2 and 4 Hz) showed significant changes with respect to time to peak, tau decay, amplitude, and fractional release in the DOXO group. These changes were associated with a significant downregulation of sarco/endoplasmic reticulum Ca2+ ATPase pump (SERCA) expression. From a structural viewpoint, these changes were associated with T-tubular disarray in the DOXO and COMBO groups.
Conclusions
DOXO, and to a greater extent COMBO treatment (but not TRZ alone) cause LV dysfunction in vivo. Moreover, both DOXO and COMBO treatments, but not TRZ alone, induce electrophysiological abnormalities and both structural and functional changes in the sarcoplasmic reticulum. These findings provide novel insights into the cellular mechanisms of CM dysfunction and arrhythmias associated with combined DOXO/TRZ therapy.
Acknowledgement/Funding
Swiss League against Cancer
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Affiliation(s)
- C Altomare
- Cardiocentro Ticino, Lugano, Switzerland
| | - V Biemmi
- Cardiocentro Ticino, Lugano, Switzerland
| | - E Torre
- University of Milano-Bicocca, Milano, Italy
| | | | - M Ferrandi
- University of Milano-Bicocca, Milano, Italy
| | | | - L Barile
- Cardiocentro Ticino, Lugano, Switzerland
| | - G Milano
- Cardiocentro Ticino, Lugano, Switzerland
| | - G Vassalli
- Cardiocentro Ticino, Lugano, Switzerland
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63
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Yamanaka T, De Nicola A, Munaò G, Soares TA, Milano G. Effect of the ligand’s bulkiness on the shape of functionalized gold nanoparticles in aqueous solutions: A molecular dynamics study. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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64
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Milano G, Sánchez M, Jo CH, Saccomanno MF, Thampatty BP, Wang JHC. Platelet-rich plasma in orthopaedic sports medicine: state of the art. J ISAKOS 2019. [DOI: 10.1136/jisakos-2019-000274] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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65
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Zaffagnini S, Grassi A, Adravanti P, Milano G, Schiavone Panni A, Berruto M, Giron F, Ronga M, Madonna V, Condello V, Rossi R, Canata GL, Benazzo F, Zanon G, Mazzola C, Pederzini L, Caraffa A, Tucciarone A, Stefani G, Randelli P. Protocol and descriptive epidemiology of the SIGASCOT Italian multicentric registry of revision ACL reconstruction: a 1-year pilot study. Acta Orthop Belg 2019; 85:159-168. [PMID: 31315006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The aim of the present study was to present the demographic and baseline results of the first year of course of the SIGASCOT Italian registry of Revision ACL reconstruction.The data of the patients undergoing revision ACL reconstruction, enrolled in by 20 SIGASCOT members from March 2015 to May 2016, were extracted from the Surgical Outcome System (SOS). Overall, 126 patients were enrolled; 18 were excluded due to incomplete data. Mean age at surgery was 30.4 ± 9.3 years (median 29; 23-38), mean BMI was 22.6 ± 2.3 kg/m2 and 77% were males. Revision was performed with a single-bundle technique in 94%, using allograft in 57% of cases and autograft in 43%. Only 28% had both menisci intact, and meniscal repair or replacement was performed in 25% of patients for medial meniscus and 8% for lateral meniscus. During the first year of enrollment, the SIGASCOT Italian ACL revision registry was able to collect the data of more than 100 patients. The revision ACL reconstruction was usually performed with a single-bundle technique, using allograft and autograft almost in the same extent.
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66
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Beomonte Zobel D, Dell'Atti C, Magarelli N, Coviello D, Belmonte G, Saccomanno MF, Paladini A, Milano G, Leone A, Colosimo C. Magnetic resonance arthrography accuracy in the detection of labral tears in young patients with chronic unstable shoulder: correlation with arthroscopy. J BIOL REG HOMEOS AG 2019; 33:581-586. [PMID: 30887797] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The aim of this study is to determine the diagnostic performance of Magnetic Resonance Arthrography (MRA) in evaluating lesions of the glenoid labrum, in young active patients with chronic unstable shoulder, compared to shoulder arthroscopy. We retrospectively considered 65 MRA examinations, performed between December 2011 and January 2018. Among them, thirty-five patients (31 men, 4 women; mean age, 27.3 years; range, 16-53 years; 4 patients with a previous arthroscopy of the same shoulder) underwent shoulder arthroscopy after MRA. Arthroscopic reports were collected and analyzed for the correlation with MRA results.
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Affiliation(s)
- D Beomonte Zobel
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - C Dell'Atti
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - N Magarelli
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - D Coviello
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - G Belmonte
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - M F Saccomanno
- Institute of Orthopedics and Traumatology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - A Paladini
- SCDU Diagnostic and Interventional Radiology, University Hospital Maggiore della Carità, Novara, Italy
| | - G Milano
- Institute of Orthopedics and Traumatology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - A Leone
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - C Colosimo
- Institute of Radiology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
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67
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Conti D, Laurenti M, Porro S, Giovinazzo C, Bianco S, Fra V, Chiolerio A, Pirri CF, Milano G, Ricciardi C. Resistive switching in sub-micrometric ZnO polycrystalline films. Nanotechnology 2019; 30:065707. [PMID: 30523900 DOI: 10.1088/1361-6528/aaf261] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Resistive switching (RS) devices are considered as the most promising alternative to conventional random access memories. They interestingly offer effective properties in terms of device scalability, low power-consumption, fast read/write operations, high endurance and state retention. Moreover, neuromorphic circuits and synapse-like devices are envisaged with RS modeled as memristors, opening the route toward beyond-Von Neumann computing architectures and intelligent systems. This work investigates how the RS properties of zinc oxide thin films are related to both sputtering deposition process and device configuration, i.e. valence change memory and electrochemical metallization memory (ECM). Different devices, with an oxide thickness ranging from 50-250 nm, are fabricated and deeply characterized. The electrical characterization evidences that, differently from typical nanoscale amorphous oxides employed for resistive RAMs (HfO x , WO x , etc), sub-micrometric thicknesses of polycrystalline ZnO layers with ECM configuration are needed to achieve the most reliable devices. The obtained results are deeply discussed, correlating the RS mechanism to material nanostructure.
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Affiliation(s)
- D Conti
- Department of Applied Science and Technology, Politecnico di Torino, C.so Duca degli Abruzzi 24, I-10129 Torino, Italy
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68
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Bore SL, Kolli HB, Kawakatsu T, Milano G, Cascella M. Mesoscale Electrostatics Driving Particle Dynamics in Nonhomogeneous Dielectrics. J Chem Theory Comput 2019; 15:2033-2041. [DOI: 10.1021/acs.jctc.8b01201] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sigbjørn Løland Bore
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, PO Box 1033 Blindern, 0315 Oslo, Norway
| | - Hima Bindu Kolli
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, PO Box 1033 Blindern, 0315 Oslo, Norway
| | - Toshihiro Kawakatsu
- Department of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Miyagi, Japan
| | - Giuseppe Milano
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan ,Yonezawa, Yamagata-ken 992-8510, Japan
| | - Michele Cascella
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, PO Box 1033 Blindern, 0315 Oslo, Norway
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69
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Pfeiffer T, De Nicola A, Montis C, Carlà F, van der Vegt NFA, Berti D, Milano G. Nanoparticles at Biomimetic Interfaces: Combined Experimental and Simulation Study on Charged Gold Nanoparticles/Lipid Bilayer Interfaces. J Phys Chem Lett 2019; 10:129-137. [PMID: 30563321 DOI: 10.1021/acs.jpclett.8b03399] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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: 05/26/2023]
Abstract
The poor understanding of the interaction of nanomaterials with biologically relevant interfaces is recognized as one of the major issues currently limiting the development of nanomedicine. The central purpose of this study is to compare experimental (confocal microscopy, fluorescence correlation spectroscopy, X-ray reflectivity) and computational (molecular dynamics simulations) results to thoroughly describe the interaction of cationic gold nanoparticles (AuNPs) with mixed zwitterionic/anionic lipid membranes. The adhesion of AuNPs to the lipid membrane is investigated on different length scales from a structural and dynamical point of view; with this approach, a series of complex phenomena, spanning from lipid extraction, localized membrane disruption, lateral phase separation, and slaved diffusion, are characterized and interpreted from a molecular level to macroscopic observations.
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Affiliation(s)
- Tobias Pfeiffer
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Straße 10 , Darmstadt 64289 , Germany
| | - Antonio De Nicola
- Department of Organic Materials Science , Yamagata University , 4-3-16 Jonan Yonezawa , Yamagata-ken 992-8510 , Japan
| | - Costanza Montis
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , 50019 Sesto Fiorentino, Florence , Italy
| | - Francesco Carlà
- European Synchrotron Radiation Facility , CS 40220 , Grenoble Cedex 9, France
| | - Nico F A van der Vegt
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Straße 10 , Darmstadt 64289 , Germany
| | - Debora Berti
- Department of Chemistry "Ugo Schiff" and CSGI , University of Florence , via della Lastruccia 3 , 50019 Sesto Fiorentino, Florence , Italy
| | - Giuseppe Milano
- Department of Organic Materials Science , Yamagata University , 4-3-16 Jonan Yonezawa , Yamagata-ken 992-8510 , Japan
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70
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Milano G. Biological Augmentation in Rotator Cuff Repair: The Real Challenge for the Future of Shoulder Surgery. Joints 2018; 6:133-134. [PMID: 30582098 PMCID: PMC6301843 DOI: 10.1055/s-0038-1676656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Giuseppe Milano
- Department of Orthopaedics, Catholic University, Rome, Italy
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71
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Milano G, Refae S, Gal J, Ebran N, Otto J, Shell S, Everts R, Chamorey E, Saada-Bouzid E. A SNP germinal signature for predicting checkpoint inhibitor treatment outcome. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy493.010] [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: 11/14/2022] Open
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72
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Munaò G, Pizzirusso A, Kalogirou A, De Nicola A, Kawakatsu T, Müller-Plathe F, Milano G. Molecular structure and multi-body potential of mean force in silica-polystyrene nanocomposites. Nanoscale 2018; 10:21656-21670. [PMID: 30256374 DOI: 10.1039/c8nr05135f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We perform a systematic application of the hybrid particle-field molecular dynamics technique [Milano, et al., J. Chem. Phys., 2009, 130, 214106] to study interfacial properties and potential of mean force (PMF) for separating nanoparticles (NPs) in a melt. Specifically, we consider Silica NPs bare or grafted with Polystyrene chains, aiming to shed light on the interactions among free and grafted chains affecting the dispersion of NPs in the nanocomposite. The proposed hybrid models show good performances in catching the local structure of the chains, and in particular their density profiles, documenting the existence of the "wet-brush-to-dry-brush" transition. By using these models, the PMF between pairs of ungrafted and grafted NPs in Polystyrene matrix are calculated. Moreover, we estimate the three-particle contribution to the total PMF and its role in regulating the phase separation on the nanometer scale. In particular, the multi-particle contribution to the PMF is able to give an explanation of the complex experimental morphologies observed at low grafting densities. More in general, we propose this approach and the models utilized here for a molecular understanding of specific systems and the impact of the chemical nature of the systems on the composite final properties.
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Affiliation(s)
- Gianmarco Munaò
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II, 132, I-84084, Fisciano, SA, Italy.
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73
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Laurent-Puig P, Marisa L, Ayadi M, Blum Y, Balogoun R, Pilati C, Le Malicot K, Lepage C, Emile J, Salazar R, Aust D, Duval A, Selves J, Guenot D, Milano G, Seitz JF, Taieb J, Boige V, de Reyniès A. Colon cancer molecular subtype intratumoral heterogeneity and its prognostic impact: An extensive molecular analysis of the PETACC-8. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.058] [Citation(s) in RCA: 10] [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: 01/10/2023] Open
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74
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Milano G. Editorial Commentary: Preservation of the Anterior Intermeniscal Ligament Is Crucial to Meniscal Function-The Mechanical Role of the Anterior Part of the "Meniscal Belt". Arthroscopy 2018; 34:2844-2845. [PMID: 30286883 DOI: 10.1016/j.arthro.2018.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 07/17/2018] [Indexed: 02/02/2023]
Abstract
The anterior intermeniscal ligament represents the most anterior part of the "meniscal belt" and potentially contributes to shock-absorbing function of the menisci and to the transmission of circumferential hoop stresses in the knee. Sectioning of the anterior intermeniscal ligament produces mechanical changes similar to those observed with meniscal extrusion, with an increase and central shift in tibiofemoral contact force.
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Pizzirusso A, Peyronel F, Co ED, Marangoni AG, Milano G. Molecular Insights into the Eutectic Tripalmitin/Tristearin Binary System. J Am Chem Soc 2018; 140:12405-12414. [DOI: 10.1021/jacs.8b04729] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio Pizzirusso
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II, 132, I-84084 Fisciano, Italy
| | - Fernanda Peyronel
- Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Edmund D. Co
- Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | | | - Giuseppe Milano
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
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76
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Martin N, Ebran-Bendahhou N, Boyer J, Duranton-Tanneur V, Bozec A, Peyrade F, Guigay J, Sudaka-Bahadoran A, Milano G, Saada-Bouzid E. Next-generation sequencing reveals high intra-individual molecular concordance between primary head and neck tumors and matched local or distant recurrences. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy314.031] [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: 11/14/2022] Open
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77
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D'Alessandra Y, Gioffre' S, Chiesa M, Piacentini L, Ruggeri C, D'Avila F, Ricci V, Vavassori C, Castiglioni L, Sironi L, Scopece A, Milano G, Pompilio G, Colombo GI. P2848Long-term specific transcriptional effects of doxorubicin-induced cardiotoxicity on distinct murine cardiac chambers. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2848] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/13/2022] Open
Affiliation(s)
| | - S Gioffre'
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - M Chiesa
- Cardiology Center Monzino IRCCS, Milan, Italy
| | | | - C Ruggeri
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - F D'Avila
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - V Ricci
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - C Vavassori
- Cardiology Center Monzino IRCCS, Milan, Italy
| | | | - L Sironi
- University of Milan, Milan, Italy
| | - A Scopece
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G Milano
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G Pompilio
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G I Colombo
- Cardiology Center Monzino IRCCS, Milan, Italy
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78
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D'Alessandra Y, Gioffre' S, Chiesa M, Piacentini L, D'Avila F, Ruggeri C, Vavassori C, Ricci V, Castiglioni L, Scopece A, Milano G, Marenzi G, Pompilio G, Colombo GI. P925Cardiac injury-induced regulation of clock genes: lessons from mice and patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p925] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/12/2022] Open
Affiliation(s)
| | - S Gioffre'
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - M Chiesa
- Cardiology Center Monzino IRCCS, Milan, Italy
| | | | - F D'Avila
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - C Ruggeri
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - C Vavassori
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - V Ricci
- Cardiology Center Monzino IRCCS, Milan, Italy
| | | | - A Scopece
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G Milano
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G Marenzi
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G Pompilio
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - G I Colombo
- Cardiology Center Monzino IRCCS, Milan, Italy
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79
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Barile L, Biemmi V, Ciullo A, Torre T, Demerzis S, Mauri P, Lionetti V, Cervio E, Milano G, Moccetti T, Vassalli G. P4224Superior exosome-mediated paracrine effects of cardiac progenitor cells compared to bone marrow mesenchymal stem cells derived from the same patient for cardiac repair. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4224] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/14/2022] Open
Affiliation(s)
- L Barile
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - V Biemmi
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - A Ciullo
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - T Torre
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - S Demerzis
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - P Mauri
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - V Lionetti
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - E Cervio
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - G Milano
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - T Moccetti
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - G Vassalli
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
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80
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Kolli HB, de Nicola A, Bore SL, Schäfer K, Diezemann G, Gauss J, Kawakatsu T, Lu ZY, Zhu YL, Milano G, Cascella M. Hybrid Particle-Field Molecular Dynamics Simulations of Charged Amphiphiles in an Aqueous Environment. J Chem Theory Comput 2018; 14:4928-4937. [DOI: 10.1021/acs.jctc.8b00466] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hima Bindu Kolli
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O.
Box 1033, Blindern, 0315 Oslo, Norway
| | - Antonio de Nicola
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
| | - Sigbjørn Løland Bore
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O.
Box 1033, Blindern, 0315 Oslo, Norway
| | - Ken Schäfer
- Institut für
Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Gregor Diezemann
- Institut für
Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Jürgen Gauss
- Institut für
Physikalische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Toshihiro Kawakatsu
- Department of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
| | - You-Liang Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Giuseppe Milano
- Department of Organic Materials Science, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata-ken 992-8510, Japan
| | - Michele Cascella
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O.
Box 1033, Blindern, 0315 Oslo, Norway
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81
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Affiliation(s)
- Giuseppe Milano
- Department of Orthopaedics, Catholic University, Rome, Italy
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82
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Boniforti F, Milano G. New Frontiers for Information and Communication Technologies in Scientific Publishing. Joints 2018; 6:1. [PMID: 29675498 PMCID: PMC5906120 DOI: 10.1055/s-0038-1641718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
| | - Giuseppe Milano
- Department of Orthopaedics, Catholic University, Rome, Italy
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83
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Altomare C, Biemmi V, Pernigoni N, Ciullo A, Pianezzi E, Barile L, Vassalli G, Milano G. Electrical abnormalities and sarcolemmal T-tubular disarray of cardiomyocytes induced by Doxorubicin vs. Trastuzumab chemotherapy. Vascul Pharmacol 2018. [DOI: 10.1016/j.vph.2017.12.046] [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: 11/30/2022]
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84
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Sommariva E, Stadiotti I, Arnaboldi L, Scopece A, Demetrio S, Casella M, Milano G, Tondo C, Corsini A, Pompilio G. P320Contribution of oxidized low density lipoproteins to arrhythmogenic cardiomyopathy adipogenesis. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/13/2022] Open
Affiliation(s)
- E Sommariva
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | - I Stadiotti
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | | | - A Scopece
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | | | - M Casella
- Cardiology Center Monzino IRCCS, Cardiac Arrhythmia Research Center, Milan, Italy
| | - G Milano
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
| | - C Tondo
- Cardiology Center Monzino IRCCS, Cardiac Arrhythmia Research Center, Milan, Italy
| | | | - G Pompilio
- Cardiology Center Monzino IRCCS, Vascular Biology and Regenerative Medicine Unit, Milan, Italy
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85
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Milano G. Editorial Commentary: Is the Biceps Tendon a Valid Option for Augmentation in Rotator Cuff Repair? Future Perspectives on Superior Capsule Reconstruction. Arthroscopy 2018; 34:1306-1307. [PMID: 29622263 DOI: 10.1016/j.arthro.2018.02.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 02/13/2018] [Indexed: 02/02/2023]
Abstract
Biceps autograft can be a viable option for biological augmentation of massive rotator cuff repair, albeit results of this procedure might depend on the surgical technique. In the present qualitative systematic review, 8 case series were analyzed, in which biceps autograft was used as a scaffold or tissue bridge. Indeed, leaving the proximal portion intact and fixing it onto the greater tuberosity can simulate a superior capsule reconstruction, with potentially high biologic and mechanical advantages.
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86
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Jaschonek S, Cascella M, Gauss J, Diezemann G, Milano G. Intramolecular structural parameters are key modulators of the gel-liquid transition in coarse grained simulations of DPPC and DOPC lipid bilayers. Biochem Biophys Res Commun 2018; 498:327-333. [PMID: 29101041 DOI: 10.1016/j.bbrc.2017.10.132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 08/01/2017] [Revised: 09/29/2017] [Accepted: 10/23/2017] [Indexed: 12/11/2022]
Abstract
The capability of coarse-grained models based on the MARTINI mapping to reproduce the gel-liquid phase transition in saturated and unsaturated model lipids was investigated. We found that the model is able to reproduce a lower critical temperature for 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) with respect to 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC). Nonetheless, the appearance of a gel phase for DOPC is strictly dependent on the intramolecular parameters chosen to model its molecular structure. In particular, we show that the bending angle at the coarse-grained bead corresponding to the unsaturated carbon-carbon bond acts as an order parameter determining the temperature of the phase transition. Structural analysis of the molecular dynamics simulations runs evidences that in the gel phase, the packing of the lipophilic tails of DOPC assume a different conformation than in the liquid phase. In the latter phase, the DOPC geometry resembles that of the relaxed free molecule. DPPC:DOPC mixtures show a single phase transition temperature, indicating that the observation of a phase separation between the two lipids requires the simulation of systems with sizes much larger than the ones used here.
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Affiliation(s)
- Stefan Jaschonek
- Institut für Physikalische Chemie, Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Michele Cascella
- Department of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, Postboks 1033 Blindern, N-0315 Oslo, Norway.
| | - Jürgen Gauss
- Institut für Physikalische Chemie, Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Gregor Diezemann
- Institut für Physikalische Chemie, Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Giuseppe Milano
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
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87
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Munaò G, Correa A, Pizzirusso A, Milano G. On the calculation of the potential of mean force between atomistic nanoparticles. Eur Phys J E Soft Matter 2018; 41:38. [PMID: 29594806 DOI: 10.1140/epje/i2018-11646-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/07/2018] [Indexed: 05/24/2023]
Abstract
We study the potential of mean force (PMF) between atomistic silica and gold nanoparticles in the vacuum by using molecular dynamics simulations. Such an investigation is devised in order to fully characterize the effective interactions between atomistic nanoparticles, a crucial step to describe the PMF in high-density coarse-grained polymer nanocomposites. In our study, we first investigate the behavior of silica nanoparticles, considering cases corresponding to different particle sizes and assessing results against an analytic theory developed by Hamaker for a system of Lennard-Jones interacting particles (H.C. Hamaker, Physica A 4, 1058 (1937)). Once validated the procedure, we calculate effective interactions between gold nanoparticles, which are considered both bare and coated with polyethylene chains, in order to investigate the effects of the grafting density [Formula: see text] on the PMF. Upon performing atomistic molecular dynamics simulations, it turns out that silica nanoparticles experience similar interactions regardless of the particle size, the most remarkable difference being a peak in the PMF due to surface interactions, clearly apparent for the larger size. As for bare gold nanoparticles, they are slightly interacting, the strength of the effective force increasing for the coated cases. The profile of the resulting PMF resembles a Lennard-Jones potential for intermediate [Formula: see text], becoming progressively more repulsive for high [Formula: see text] and low interparticle separations.
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Affiliation(s)
- Gianmarco Munaò
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (SA), Italy.
| | - Andrea Correa
- Department of Chemical Science, Federico II University of Naples, via Cinthia, Complesso Monte S. Angelo, 80126, Napoli, Italy
| | - Antonio Pizzirusso
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (SA), Italy
| | - Giuseppe Milano
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (SA), Italy
- Department of Organic Materials Science, University of Yamagata, 4-3-16 Jonan Yonezawa, 992-8510, Yamagata-ken, Japan
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88
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Munaò G, Correa A, Pizzirusso A, Milano G. On the calculation of the potential of mean force between atomistic nanoparticles. Eur Phys J E Soft Matter 2018; 41:1. [PMID: 29594806 DOI: 10.1140/epje/i2018-11607-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 12/06/2017] [Indexed: 05/24/2023]
Abstract
We study the potential of mean force (PMF) between atomistic silica and gold nanoparticles in the vacuum by using molecular dynamics simulations. Such an investigation is devised in order to fully characterize the effective interactions between atomistic nanoparticles, a crucial step to describe the PMF in high-density coarse-grained polymer nanocomposites. In our study, we first investigate the behavior of silica nanoparticles, considering cases corresponding to different particle sizes and assessing results against an analytic theory developed by Hamaker for a system of Lennard-Jones interacting particles (H.C. Hamaker, Physica A 4, 1058 (1937)). Once validated the procedure, we calculate effective interactions between gold nanoparticles, which are considered both bare and coated with polyethylene chains, in order to investigate the effects of the grafting density [Formula: see text] on the PMF. Upon performing atomistic molecular dynamics simulations, it turns out that silica nanoparticles experience similar interactions regardless of the particle size, the most remarkable difference being a peak in the PMF due to surface interactions, clearly apparent for the larger size. As for bare gold nanoparticles, they are slightly interacting, the strength of the effective force increasing for the coated cases. The profile of the resulting PMF resembles a Lennard-Jones potential for intermediate [Formula: see text], becoming progressively more repulsive for high [Formula: see text] and low interparticle separations.
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Affiliation(s)
- Gianmarco Munaò
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (SA), Italy.
| | - Andrea Correa
- Department of Chemical Science, Federico II University of Naples, via Cinthia, Complesso Monte S. Angelo, 80126, Napoli, Italy
| | - Antonio Pizzirusso
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (SA), Italy
| | - Giuseppe Milano
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano (SA), Italy
- Department of Organic Materials Science, University of Yamagata, 4-3-16 Jonan Yonezawa, 992-8510, Yamagata-ken, Japan
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89
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Benea HRC, Earar K, Lattanzi W, Quercia V, Berce C, Soritau O, Saccomanno M, Milano G, Tomoaia G, Cerchizan D, Mohan A. Collagen Scaffold and Lipoaspirate Fluid-derived Stem Cells for the Treatment of Cartilage Defects in a Rabbit Model. Rev Chim 2018. [DOI: 10.37358/rc.18.2.6138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The purpose of the present study was to assess and compare the chondroregenerative properties of PLA (processed lipoaspirate) and LAF (lipoaspirate fluid) cells, in a preclinical rabbit model of knee cartilage defect. The defects were repaired by a collagen I/III scaffold and added LAF-cells, PLA-cells or no cells, upon the study group. The results showed that collagen scaffolds seeded with LAF-derived stem cells appear to have slightly better activity and outcomes when compared to PLA-cells, in terms of cartilage regeneration.
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90
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Affiliation(s)
- Sigbjørn Løland Bore
- Department
of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O.
Box 1033 Blindern, 0315 Oslo, Norway
| | - Giuseppe Milano
- Department
of Organic Materials Science, University of Yamagata, 4-3-16 Jonan
Yonezawa, Yamagata-ken 992-8510, Japan
| | - Michele Cascella
- Department
of Chemistry and Hylleraas Centre for Quantum Molecular Sciences, University of Oslo, P.O.
Box 1033 Blindern, 0315 Oslo, Norway
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91
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Affiliation(s)
- G Milano
- Department of Internal Medicine , University of Genoa , Genoa , Italy
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92
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Affiliation(s)
- G Milano
- Centre Antoine-Lacassagne, Oncopharmacology Unit, UNS EA 3836, Nice, France
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93
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Milano G. Postgraduate Training in Joint Surgery: The Role of Scientific Societies. Joints 2017; 5:195-196. [PMID: 29270554 PMCID: PMC5738477 DOI: 10.1055/s-0037-1615789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Giuseppe Milano
- Department of Orthopaedics, Catholic University, Rome, Italy.,Service of Shoulder Surgery, A. Gemelli University Hospital, Rome, Italy
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94
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Milano G. "Great Expectations": Reflections on Possible Analogies between our Patients and the Characters of Charles Dickens. Joints 2017; 5:131-132. [PMID: 29270540 PMCID: PMC5738491 DOI: 10.1055/s-0037-1607230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- Giuseppe Milano
- Department of Orthopaedics, Catholic University, Service of Shoulder Surgery, Agostino Gemelli University Hospital, Rome, Italy
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95
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Milano G, Marzuoli I, Lorenz CD, Fraternali F. Self-assembly at the multi-scale level: challenges and new avenues for inspired synthetic biology modelling. Synth Biol (Oxf) 2017. [DOI: 10.1039/9781782622789-00035] [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] Open
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96
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Affiliation(s)
- Giuseppe Milano
- Department of Orthopaedics, Catholic University, Service of Shoulder Surgery, A. Gemelli University Hospital, Rome, Italy
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97
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Milano G. A New Adventure for our Journal! Joints 2017; 5:1. [PMID: 29114621 PMCID: PMC5672860 DOI: 10.1055/s-0037-1601480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Giuseppe Milano
- Department of Orthopaedics, Service of Shoulder Surgery, A. Gemelli University Hospital, Rome, Italy
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98
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Saâda-Bouzid E, Refae S, Ebran N, Gal J, Peyrade F, Guigay J, Milano G. Variations in PD1, PD-L1, IDO1 and VEGR2 genes and association with outcomes in advanced head and neck squamous cell carcinoma (HNSCC) patients treated with anti-PD1/PD-L1 based immunotherapy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx509.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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99
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Abstract
Trapeziometacarpal joint osteoarthritis is a common cause of radial-sided wrist pain that prevalently affects women. It is diagnosed on the basis of a thorough history, physical examination, and radiographic evaluation. While radiographs are used to determine the stage of disease, treatment is dependent on the severity of the symptoms. Non-surgical treatment frequently consists of activity modification, non-steroidal anti-inflammatory drugs, splinting and corticosteroid injections. After failure of conservative treatment, various surgical options exist depending on the stage of the disease. These options range from ligament reconstruction or osteotomy, for early painful laxity, to trapeziectomy, arthrodesis and arthroplasty for more severe osteoarthritis. This article reviews the literature supporting the various surgical treatment options and analyzes the surgical techniques most frequently used in the different disease stages.
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Affiliation(s)
- Giuseppe Taccardo
- Orthopaedics and Hand Surgery, Catholic University, Columbus Hospital, Rome, Italy
| | - Rocco De Vitis
- Orthopaedics and Hand Surgery, Columbus Hospital, Rome, Italy
| | - Giuseppe Parrone
- Orthopaedics and Hand Surgery, Catholic University, Columbus Hospital, Rome, Italy
| | - Giuseppe Milano
- Department of Orthopedics, Catholic University, “A. Gemelli” Hospital, Rome, Italy
| | - Francesco Fanfani
- Orthopaedics and Hand Surgery, Catholic University, Columbus Hospital, Rome, Italy
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100
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Abstract
Cellular membranes are fundamental constituents of living organisms. Apart from defining the boundaries of the cells, they are involved in a wide range of biological functions, associated with both their structural and the dynamical properties. Biomembranes can undergo large-scale transformations when subject to specific environmental changes, including gel-liquid phase transitions, change of aggregation structure, formation of microtubules, or rupture into vesicles. All of these processes are dependent on a delicate interplay between intermolecular forces, molecular crowding, and entropy, and their understanding requires approaches that are able to capture and rationalize the details of all of the involved interactions. Molecular dynamics-based computational models at atom-level resolution are, in principle, the best way to perform such investigations. Unfortunately, the relevant spatial and time dimensionalities involved in membrane remodeling phenomena would require computational costs that are today unaffordable on a routinely basis. Such hurdles can be removed by coarse-graining the representations of the individual molecular components of the systems. This procedure anyway reduces the possibility of describing the chemical variations in the lipid mixtures composing biological membranes. New hybrid particle field multiscale approaches offer today a promising alternative to the more traditional particle-based simulations methods. By combining chemically distinguishable molecular representations with mesoscale-based computationally affordable potentials, they appear as one of the most promising ways to keep an accurate description of the chemical complexity of biological membranes and, at the same time, cover the required scales to describe remodeling events.
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Affiliation(s)
- Thereza A Soares
- Department of Fundamental Chemistry, Federal University of Pernambuco, Cidade Universitária , Recife PE 50740-560, Brazil
| | - Stefano Vanni
- Department of Biology, University of Fribourg , 1700 Fribourg, Switzerland
| | - Giuseppe Milano
- Dipartimento di Chimica e Biologia, Università di Salerno , Via Giovanni Paolo II, 132, I-84084 Fisciano, Italy
| | - Michele Cascella
- Department of Chemistry and Centre for Theoretical and Computational Chemistry (CTCC) , Sem Saelands vei 26, 0371 Oslo, Norway
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