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Chiodini S, Borbone F, Oscurato SL, Garcia PD, Ambrosio A. Light-induced modulation of viscoelastic properties in azobenzene polymers. Nanophotonics 2024; 13:229-238. [PMID: 38283896 PMCID: PMC10808048 DOI: 10.1515/nanoph-2023-0728] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/21/2023] [Indexed: 01/30/2024]
Abstract
Photo-induced isomerization of azobenzene molecules drives mass migrations in azopolymer samples. The resulting macroscopic directional photo-deformation of the material morphology has found many applications in literature, although the fundamental mechanisms behind this mass transfer are still under debate. Hence, it is of paramount importance to find quantitative observables that could drive the community toward a better understanding of this phenomenon. In this regard, azopolymer mechanical properties have been intensively studied, but the lack of a nanoscale technique capable of quantitative viscoelastic measurements has delayed the progress in the field. Here, we use bimodal atomic force microscopy (AFM) as a powerful technique for nanomechanical characterizations of azopolymers. With this multifrequency AFM approach, we map the azopolymer local elasticity and viscosity, with high resolution, after irradiation. We find that, while in the (previously) illuminated region, a general photo-softening is measured; locally, the Young modulus and the viscosity depend upon the inner structuring of the illuminating light spot. We then propose a possible interpretation based on a light-induced expansion plus a local alignment of the polymer chains (directional hole-burning effect), which explains the experimental observations. The possibility to access, in a reliable and quantitative way, both Young modulus and viscosity could trigger new theoretical-numerical investigations on the azopolymer mass migration dynamics since, as we show, both parameters can be considered measurable. Furthermore, our results provide a route for engineering the nanomechanical properties of azopolymers, which could find interesting applications in cell mechanobiology research.
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Affiliation(s)
- Stefano Chiodini
- Center for Nano Science and Technology, Fondazione Istituto Italiano di Tecnologia, Via Rubattino 81, 20134, Milan, Italy
| | - Fabio Borbone
- Department of Chemical Sciences, University of Naples “Federico II”, Via Cinthia Complesso Universitario di Monte Sant’Angelo, Via Cintia, 80126Naples, Italy
| | - Stefano L. Oscurato
- Center for Nano Science and Technology, Fondazione Istituto Italiano di Tecnologia, Via Rubattino 81, 20134, Milan, Italy
- Physics Department “E. Pancini”, University of Naples “Federico II”, Via Cinthia Complesso Universitario di Monte Sant’Angelo, Via Cintia, 80126Naples, Italy
| | - Pablo D. Garcia
- BYM-Ingema, Centro de Empresas del Caudal, Polígono Vega de Arriba, 33600, Mieres, Spain
| | - Antonio Ambrosio
- Center for Nano Science and Technology, Fondazione Istituto Italiano di Tecnologia, Via Rubattino 81, 20134, Milan, Italy
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Chiodini S, Dinelli F, Martinez NF, Donati S, Albonetti C. Identification of ultra-thin molecular layers atop monolayer terraces in sub-monolayer organic films with scanning probe microscopy. Ultramicroscopy 2022; 240:113598. [DOI: 10.1016/j.ultramic.2022.113598] [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] [Received: 03/31/2022] [Accepted: 07/21/2022] [Indexed: 10/16/2022]
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3
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Chiodini S, Kerfoot J, Venturi G, Mignuzzi S, Alexeev EM, Teixeira Rosa B, Tongay S, Taniguchi T, Watanabe K, Ferrari AC, Ambrosio A. Moiré Modulation of Van Der Waals Potential in Twisted Hexagonal Boron Nitride. ACS Nano 2022; 16:7589-7604. [PMID: 35486712 PMCID: PMC9134503 DOI: 10.1021/acsnano.1c11107] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
When a twist angle is applied between two layered materials (LMs), the registry of the layers and the associated change in their functional properties are spatially modulated, and a moiré superlattice arises. Several works explored the optical, electric, and electromechanical moiré-dependent properties of such twisted LMs but, to the best of our knowledge, no direct visualization and quantification of van der Waals (vdW) interlayer interactions has been presented, so far. Here, we use tapping mode atomic force microscopy phase-imaging to probe the spatial modulation of the vdW potential in twisted hexagonal boron nitride. We find a moiré superlattice in the phase channel only when noncontact (long-range) forces are probed, revealing the modulation of the vdW potential at the sample surface, following AB and BA stacking domains. The creation of scalable electrostatic domains, modulating the vdW potential at the interface with the environment by means of layer twisting, could be used for local adhesion engineering and surface functionalization by affecting the deposition of molecules or nanoparticles.
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Affiliation(s)
- Stefano Chiodini
- Center
for Nano Science and Technology, Fondazione
Istituto Italiano di Tecnologia, Via G. Pascoli 70, Milan 20133, Italy
| | - James Kerfoot
- Cambridge
Graphene Centre, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
| | - Giacomo Venturi
- Center
for Nano Science and Technology, Fondazione
Istituto Italiano di Tecnologia, Via G. Pascoli 70, Milan 20133, Italy
- Physics
Department, Politecnico Milano, P.zza Leonardo Da Vinci 32, Milan 20133, Italy
| | - Sandro Mignuzzi
- Cambridge
Graphene Centre, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
| | - Evgeny M. Alexeev
- Cambridge
Graphene Centre, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
| | - Bárbara Teixeira Rosa
- Cambridge
Graphene Centre, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
| | - Sefaattin Tongay
- School
for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Takashi Taniguchi
- International
Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Kenji Watanabe
- Research
Center for Functional Materials, National
Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Andrea C. Ferrari
- Cambridge
Graphene Centre, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
| | - Antonio Ambrosio
- Center
for Nano Science and Technology, Fondazione
Istituto Italiano di Tecnologia, Via G. Pascoli 70, Milan 20133, Italy
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Chiodini S, Stoliar P, Garrido PF, Albonetti C. Differential Entropy: An Appropriate Analysis to Interpret the Shape Complexity of Self-Similar Organic Islands. Materials (Basel) 2021; 14:ma14216529. [PMID: 34772050 PMCID: PMC8585197 DOI: 10.3390/ma14216529] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/15/2021] [Accepted: 10/25/2021] [Indexed: 11/16/2022]
Abstract
Differential entropy, along with fractal dimension, is herein employed to describe and interpret the shape complexity of self-similar organic islands. The islands are imaged with in situ Atomic Force Microscopy, following, step-by-step, the evolution of their shape while deposition proceeds. The fractal dimension shows a linear correlation with the film thickness, whereas the differential entropy presents an exponential plateau. Plotting differential entropy versus fractal dimension, a linear correlation can be found. This analysis enables one to discern the 6T growth on different surfaces, i.e., native SiOx or 6T layer, and suggests a more comprehensive interpretation of the shape evolution. Changes in fractal dimension reflect rougher variations of the island contour, whereas changes in differential entropy correlates with finer contour details. The computation of differential entropy therefore helps to obtain more physical information on the island shape dependence on the substrate, beyond the standard description obtained with the fractal dimension.
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Affiliation(s)
- Stefano Chiodini
- Consiglio Nazionale delle Ricerche-Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
- Center for Nano Science and Technology, Fondazione Istituto Italiano di Tecnologia, Via G. Pascoli 70, 20133 Milan, Italy
| | - Pablo Stoliar
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
| | - Pablo F Garrido
- Departamento de Fisica de Aplicada, Facultade de Fisica, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Cristiano Albonetti
- Consiglio Nazionale delle Ricerche-Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
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Cai T, Cocci A, Di Maida F, Chiodini S, Ciarleglio F, Luciani LG, Pedrotti G, Palmieri A, Malossini G, Rizzo M, Liguori G, Bjerklund Johansen TE. Visceral adiposity is associated with worse urinary and sexual function recovery after radical prostatectomy: Results from a longitudinal cohort study. Arch Ital Urol Androl 2021; 93:285-290. [PMID: 34839633 DOI: 10.4081/aiua.2021.3.285] [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] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/03/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE A prospective longitudinal cohort study on the impact of anthropometric measures on the sexual function and continence recovery in patients treated with laparoscopic radical prostatectomy (LRP) is presented. MATERIAL AND METHODS Anthropometric measures, International Index of Erectile Function (IIEF-5) and International Prostatic Symptoms Score questionnaires, were collected before surgery and at the end of follow-up period. All patients were assigned into the following groups: A) non-obese; B) non-obese with central adiposity; C) obese without central adiposity; D) obese with central adiposity. Urinary and sexual functions were the outcome measures. RESULTS At the end of follow-up, in 29 patients with visceral adiposity (VA) the median IIEF-5 was 14 (IQR 7-18) while in 49 non-VA patients (62.8%) was 22 (IQR 17-24) (p < 0.001). Twenty-three patients (79.3%) with VA reported complete continence, while 6 (20.7%) used ≥ 2 pads per day. Forty-eight patients (97.9%) without VA reported complete continence. VA was confirmed as a strong independent predictor for worse continence (HR 3.67; 2.75-4.51 CI95% p = 0.003) and sexual function recovery (HR: 4.51; 3.09-5.63 CI95% p < 0.001). CONCLUSION We truly believe obese with visceral adiposity patients with prostate cancer should receive detailed preoperative counseling before surgery, including higher risk of suboptimal functional outcomes.
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Affiliation(s)
- Tommaso Cai
- Department of Urology, Santa Chiara Regional Hospital, Trento, Italy; Institute of Clinical Medicine, University of Oslo, Oslo.
| | - Andrea Cocci
- Department of Urology, University of Florence, Florence.
| | | | | | | | | | - Giovanni Pedrotti
- Department of Anesthesiology, Santa Maria del Carmine Hospital, Rovereto.
| | | | | | - Michele Rizzo
- Department of Urology, University of Trieste, Trieste.
| | | | - Truls E Bjerklund Johansen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Urology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Aarhus.
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Sibilia S, Bertocchi F, Chiodini S, Cristiano F, Ferrigno L, Giovinco G, Maffucci A. Temperature-dependent electrical resistivity of macroscopic graphene nanoplatelet strips. Nanotechnology 2021; 32:275701. [PMID: 33730710 DOI: 10.1088/1361-6528/abef95] [Citation(s) in RCA: 6] [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: 02/03/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
This paper studies the temperature dependence of the electrical resistivity of low-cost commercial graphene-based strips, made from a mixture of epoxy and graphene nanoplatelets. An equivalent homogenous resistivity model is derived from the joint use of experimental data and simulation results obtained by means of a full three-dimensional (3D) numerical electrothermal model. Three different types of macroscopic strips (with surface dimensions of cm2) are analyzed, differing in their percentage of graphene nanoplatelets. The experimental results show a linear trend of resistivity in a wide temperature range (-60°C to +60°C), and a negative temperature coefficient . The derived analytical model of temperature-dependent resistivity follows the simple law commonly adopted for conventional conducting materials, such us copper. The model is then validated by using the graphene strips as heating elements by exploiting the Joule effect. These results suggest that such materials can be used as thermistors in sensing or heating applications.
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Affiliation(s)
- S Sibilia
- Department of Electrical and Information Engineering, University of Cassino and Southern Lazio, Via G. di Biasio 43, 03043, Cassino, FR, Italy
| | - F Bertocchi
- NANESA Srl, Via Del Gavardello 59/c 52100, Arezzo, AR, Italy
| | - S Chiodini
- NANESA Srl, Via Del Gavardello 59/c 52100, Arezzo, AR, Italy
| | - F Cristiano
- NANESA Srl, Via Del Gavardello 59/c 52100, Arezzo, AR, Italy
| | - L Ferrigno
- Department of Electrical and Information Engineering, University of Cassino and Southern Lazio, Via G. di Biasio 43, 03043, Cassino, FR, Italy
| | - G Giovinco
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via G. di Biasio 43, 03043, Cassino, FR, Italy
| | - A Maffucci
- Department of Electrical and Information Engineering, University of Cassino and Southern Lazio, Via G. di Biasio 43, 03043, Cassino, FR, Italy
- INFN-Laboratori Nazionali di Frascati, via E. Fermi 40, 00044 Frascati, RM, Italy
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7
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Mattevi D, Luciani L, Spina R, Divan C, Cicuto S, Cai T, Vattovani V, Puglisi M, Chiodini S, Malossini G. Comparison of GreenLight 180-W XPS laser vaporization versus transurethral resection of the prostate: Outcomes of a single regional center. Arch Ital Urol Androl 2020; 92. [PMID: 33016037 DOI: 10.4081/aiua.2020.3.169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 05/31/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND To evaluate the intermediate perioperative outcomes, rate of complications and functional data after XPS 180-W Greenlight photoselective laser vaporization (PVP) compared with transurethral resection of the prostate (TURP) in a prospective non-randomized single centre study. METHODS We analyzed a prospectively-maintained database collecting data on 100 patients undergoing surgical treatment of BPH (50 consecutive PVP and 50 consecutive TURP). All complications, recorded and graduated according to the Clavien Dindo system and the clinical, operative, perioperative variables were compared. The functional outcomes, International Prostate Symptom Score (IPSS), max flow rate (Qmax) and Prostate Specific Antigen (PSA), were recorded preoperatively and at 1 year of follow up. RESULTS Age, prostate volume, use of anticoagulants or antiplatelets, ASA score and operative time were comparable in the two groups. The reduction in the hemoglobin levels (0.46 vs 1.8 g/dL), the catheterization time (1.2 vs 3.2 days), the hospital stay (1.7 vs 3.8 days) and rate of transfused patients (0 vs 8%), were significantly lower for PVP. Transient re-catherization (6 vs 26%) was significantly lower for PVP. The IPSS and Qmax at 1 year showed no significant difference. The rate of repeat TURP/PVP was higher in the TURP group (0 vs 10%). Reduction of PSA, that reflects the major reduction of prostate volume, was statistically greater in PVP group respect TURP group (p = 0.001). CONCLUSIONS PVP has advantages in terms of perioperative safety and major complications than TURP. Functional outcomes at 1 year of follow-up were comparable.
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8
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Chiodini S, Ruiz-Rincón S, Garcia PD, Martin S, Kettelhoit K, Armenia I, Werz DB, Cea P. Bottom Effect in Atomic Force Microscopy Nanomechanics. Small 2020; 16:e2000269. [PMID: 32761794 DOI: 10.1002/smll.202000269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/04/2020] [Indexed: 05/27/2023]
Abstract
In this work, the influence of the rigid substrate on the determination of the sample Young's modulus, the so-called bottom-effect artifact, is demonstrated by an atomic force microscopy force-spectroscopy experiment. The nanomechanical properties of a one-component supported lipid membrane (SLM) exhibiting areas of two different thicknesses are studied: While a standard contact mechanics model (Sneddon) provides two different elastic moduli for these two morphologies, it is shown that Garcia's bottom-effect artifact correction yields a unique value, as expected for an intrinsic material property. Remarkably, it is demonstrated that the ratio between the contact radius (and not only the indentation) and the sample thickness is the key parameter addressing the relevance of the bottom-effect artifact. The experimental results are validated by finite element method simulations providing a solid support to Garcia's theory. The amphiphilic nature of the investigated material is representative of several kinds of lipids, suggesting that the results have far reaching implications for determining the correct Young's modulus of SLMs. The generality of Garcia's bottom-effect artifact correction allows its application to every kind of supported soft film.
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Affiliation(s)
- Stefano Chiodini
- Instituto de Nanociencia de Aragón (INA), Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, Zaragoza, 50018, Spain
- Laboratorio de Microscopias Avanzadas (LMA), Campus Río Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, Zaragoza, 50018, Spain
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
| | - Silvia Ruiz-Rincón
- Instituto de Nanociencia de Aragón (INA), Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, Zaragoza, 50018, Spain
- Laboratorio de Microscopias Avanzadas (LMA), Campus Río Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, Zaragoza, 50018, Spain
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
| | - Pablo D Garcia
- Instituto de Ciencia de Materiales, ICMM-CSIC, Campus de Cantoblanco, C/Sor Juana Inés de la Cruz, 3, Madrid, 28049, Spain
| | - Santiago Martin
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
- Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
| | - Katharina Kettelhoit
- Technische Universität Braunschweig, Institut für Organische Chemie, Hagenring 30, Braunschweig, 38106, Germany
| | - Ilaria Armenia
- Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
| | - Daniel B Werz
- Technische Universität Braunschweig, Institut für Organische Chemie, Hagenring 30, Braunschweig, 38106, Germany
| | - Pilar Cea
- Instituto de Nanociencia de Aragón (INA), Campus Rio Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, Zaragoza, 50018, Spain
- Laboratorio de Microscopias Avanzadas (LMA), Campus Río Ebro, Universidad de Zaragoza, C/Mariano Esquillor s/n, Zaragoza, 50018, Spain
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
- Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, Zaragoza, 50009, Spain
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Luciani L, Mattevi D, Puglisi M, Chiodini S, Vattovani V, Malossini G. Preliminary experience with Hyper Accuracy 3D model (HA3D™) during robotic-assisted radical cystectomy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34203-8] [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] Open
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10
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Albonetti C, Chiodini S, Annibale P, Stoliar P, Martinez RV, Garcia R, Biscarini F. Quantitative phase-mode electrostatic force microscopy on silicon oxide nanostructures. J Microsc 2020; 280:252-269. [PMID: 32538463 DOI: 10.1111/jmi.12938] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/05/2020] [Accepted: 06/12/2020] [Indexed: 02/02/2023]
Abstract
Phase-mode electrostatic force microscopy (EFM-Phase) is a viable technique to image surface electrostatic potential of silicon oxide stripes fabricated by oxidation scanning probe lithography, exhibiting an inhomogeneous distribution of localized charges trapped within the stripes during the electrochemical reaction. We show here that these nanopatterns are useful benchmark samples for assessing the spatial/voltage resolution of EFM-phase. To quantitatively extract the relevant observables, we developed and applied an analytical model of the electrostatic interactions in which the tip and the surface are modelled in a prolate spheroidal coordinates system, fitting accurately experimental data. A lateral resolution of ∼60 nm, which is comparable to the lateral resolution of EFM experiments reported in the literature, and a charge resolution of ∼20 electrons are achieved. This electrostatic analysis evidences the presence of a bimodal population of trapped charges in the nanopatterned stripes.
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Affiliation(s)
- C Albonetti
- Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy
| | - S Chiodini
- Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy.,Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, Zaragoza, Spain
| | - P Annibale
- Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy.,Present address: Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - P Stoliar
- Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy.,National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - R V Martinez
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain.,Present address: School of Industrial Engineering, Purdue University, West Lafayette, Indiana, U.S.A
| | - R Garcia
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid (ICMM), CSIC, Madrid, Spain
| | - F Biscarini
- Consiglio Nazionale delle Ricerche - Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN), Bologna, Italy.,Department of Life Sciences, Università di Modena e Reggio Emilia, Modena, Italy.,Center for Translational Neurophysiology-Istituto Italiano di Tecnologia, Ferrara, Italy
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11
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Barrio JD, Liu J, Brady RA, Tan CSY, Chiodini S, Ricci M, Fernández-Leiro R, Tsai CJ, Vasileiadi P, Di Michele L, Lairez D, Toprakcioglu C, Scherman OA. Emerging Two-Dimensional Crystallization of Cucurbit[8]uril Complexes: From Supramolecular Polymers to Nanofibers. J Am Chem Soc 2019; 141:14021-14025. [PMID: 31422657 PMCID: PMC6772898 DOI: 10.1021/jacs.9b07506] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The binding of imidazolium salts to cucurbit[8]uril, CB[8], triggers a stepwise self-assembly process with semiflexible polymer chains and crystalline nanostructures as early- and late-stage species, respectively. In such a process, which involves the crystallization of the host-guest complexes, the guest plays a critical role in directing self-assembly toward desirable morphologies. These include platelet-like aggregates and two-dimensional (2D) fibers, which, moreover, exhibit viscoelastic and lyotropic properties. Our observations provide a deeper understanding of the self-assembly of CB[8] complexes, with fundamental implications in the design of functional 2D systems and crystalline materials.
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Affiliation(s)
- Jesús Del Barrio
- Instituto de Nanociencia de Aragón , Universidad de Zaragoza , 50018 Zaragoza , Spain.,Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de Materiales de Aragón , CSIC-Universidad de Zaragoza , 50018 Zaragoza , Spain
| | - Ji Liu
- Melville Laboratory for Polymer Synthesis, Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
| | - Ryan A Brady
- Cavendish Laboratory, Department of Physics , University of Cambridge , JJ Thomson Avenue , Cambridge CB3 0HE , United Kingdom
| | - Cindy S Y Tan
- Melville Laboratory for Polymer Synthesis, Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom.,Faculty of Applied Sciences , Universiti Teknologi MARA , 94300 Kota Samarahan , Sarawak , Malaysia
| | - Stefano Chiodini
- Instituto de Nanociencia de Aragón , Universidad de Zaragoza , 50018 Zaragoza , Spain
| | - Maria Ricci
- Cavendish Laboratory, Department of Physics , University of Cambridge , JJ Thomson Avenue , Cambridge CB3 0HE , United Kingdom
| | - Rafael Fernández-Leiro
- Spanish National Cancer Research Centre (CNIO) , Melchor Fernández Almagro 3 , 28029 Madrid , Spain
| | - Ching-Ju Tsai
- Laboratory of Biomolecular Research, Division of Biology and Chemistry , Paul Scherrer Institute , 5232 Villigen PSI , Switzerland
| | | | - Lorenzo Di Michele
- Cavendish Laboratory, Department of Physics , University of Cambridge , JJ Thomson Avenue , Cambridge CB3 0HE , United Kingdom
| | - Didier Lairez
- Laboratoire Léon Brillouin, CNRS, CEA , Université Paris-Saclay , 91191 Gif-sur-Yvette cedex , France.,Laboratoire des Solides Irradiés, Ecole polytechnique, CNRS, CEA , Université Paris-Saclay , 91128 Palaiseau cedex , France
| | | | - Oren A Scherman
- Melville Laboratory for Polymer Synthesis, Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
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12
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Mattevi D, Luciani LG, Mantovani W, Cai T, Chiodini S, Vattovani V, Puglisi M, Malossini G. Fluorescence-guided selective arterial clamping during RAPN provides better early functional outcomes based on renal scan compared to standard clamping. J Robot Surg 2018; 13:391-396. [PMID: 30094595 DOI: 10.1007/s11701-018-0862-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 08/05/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Daniele Mattevi
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy.
| | - L G Luciani
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy
| | - W Mantovani
- Department of Prevention, Public Health Care Trust Trento, Trento, Italy
| | - T Cai
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy
| | - S Chiodini
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy
| | - V Vattovani
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy
| | - M Puglisi
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy
| | - G Malossini
- Department of Urology, Santa Chiara Hospital, Largo Medaglie d'oro 9, 38122, Trento, Italy
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Kyndiah A, Ablat A, Guyot-Reeb S, Schultz T, Zu F, Koch N, Amsalem P, Chiodini S, Yilmaz Alic T, Topal Y, Kus M, Hirsch L, Fasquel S, Abbas M. A Multifunctional Interlayer for Solution Processed High Performance Indium Oxide Transistors. Sci Rep 2018; 8:10946. [PMID: 30026501 PMCID: PMC6053378 DOI: 10.1038/s41598-018-29220-0] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/06/2018] [Indexed: 11/09/2022] Open
Abstract
Multiple functionality of tungsten polyoxometalate (POM) has been achieved applying it as interfacial layer for solution processed high performance In2O3 thin film transistors, which results in overall improvement of device performance. This approach not only reduces off-current of the device by more than two orders of magnitude, but also leads to a threshold voltage reduction, as well as significantly enhances the mobility through facilitated charge injection from the electrode to the active layer. Such a mechanism has been elucidated through morphological and spectroscopic studies.
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Affiliation(s)
- Adrica Kyndiah
- CNRS, Université Bordeaux, Laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, ENSCBP, 16 avenue Pey Berland, 33607, Pessac Cedex, France
| | - Abduleziz Ablat
- CNRS, Université Bordeaux, Laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, ENSCBP, 16 avenue Pey Berland, 33607, Pessac Cedex, France.,School of Physical Science and Technology, Xinjiang University, Urumqi, 830046, People's Republic of China
| | - Seymour Guyot-Reeb
- CNRS, Université Bordeaux, Laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, ENSCBP, 16 avenue Pey Berland, 33607, Pessac Cedex, France
| | - Thorsten Schultz
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Fengshuo Zu
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin, Germany.,Helmholtz Zentrum Berlin für Materialien und Energie GmbH, 12489, Berlin, Germany
| | - Norbert Koch
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin, Germany.,Helmholtz Zentrum Berlin für Materialien und Energie GmbH, 12489, Berlin, Germany
| | - Patrick Amsalem
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Stefano Chiodini
- Instituto de Ciencia de Materiales de Madrid, Sor Juana Inés de la Cruz 3, Cantoblanco, 28049, Madrid, Spain.,Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, 50018, Zaragoza, Spain
| | - Tugbahan Yilmaz Alic
- Advanced Technology Research and Application Center, Selcuk University, 42031, Campus, Selçuklu, Konya, Turkey
| | - Yasemin Topal
- Advanced Technology Research and Application Center, Selcuk University, 42031, Campus, Selçuklu, Konya, Turkey.,Pamukkale University, Cal Vocational School, 20700, Denizli, Turkey
| | - Mahmut Kus
- Advanced Technology Research and Application Center, Selcuk University, 42031, Campus, Selçuklu, Konya, Turkey.,Gebze Technical University, Institute of Energy Technologies, 41400, Gebze, Kocaeli, Turkey
| | - Lionel Hirsch
- CNRS, Université Bordeaux, Laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, ENSCBP, 16 avenue Pey Berland, 33607, Pessac Cedex, France
| | - Sophie Fasquel
- CNRS, Université Bordeaux, Laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, ENSCBP, 16 avenue Pey Berland, 33607, Pessac Cedex, France
| | - Mamatimin Abbas
- CNRS, Université Bordeaux, Laboratoire de l'Intégration du Matériau au Système (IMS), UMR 5218, ENSCBP, 16 avenue Pey Berland, 33607, Pessac Cedex, France.
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14
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Affiliation(s)
- Gino Franciolini
- Department of Obstetrics and Gynecology, Spedali Civili di Brescia, Brescia
| | - Giovanni Momoli
- Department of Obstetrics and Gynecology, Spedali Civili di Brescia, Brescia
| | - Luca Minelli
- Department of Obstetrics and Gynecology, Spedali Civili di Brescia, Brescia
| | - Franco Mutolo
- Department of Obstetrics and Gynecology, Spedali Civili di Brescia, Brescia
| | | | - Stefano Chiodini
- Department of Surgery, Ospedale « La Memoria », Gavardo (Brescia)
| | - Fausto Zorzi
- 1st Department of Pathology, Spedali Civili di Brescia, Brescia
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15
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Luciani LG, Mattevi D, Mantovani W, Cai T, Chiodini S, Vattovani V, Puglisi M, Tiscione D, Anceschi U, Malossini G. Retropubic, Laparoscopic, and Robot-Assisted Radical Prostatectomy: A Comparative Analysis of the Surgical Outcomes in a Single Regional Center. Curr Urol 2017; 11:36-41. [PMID: 29463975 DOI: 10.1159/000447192] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/24/2017] [Indexed: 12/30/2022] Open
Abstract
Background To compare the surgical outcomes of radical prostatectomy (RP) performed via 3 different approaches: retropubic (RRP), laparoscopic-assisted (LRP), and robot-assisted (RARP), in a single non-academic regional center by a single surgeon. Materials and Methods The data of patients undergoing RP from 2005 to 2014 were reviewed. The standard approach changed through the years: RRP (n = 380, years 2005 to 2008), LRP (n = 240, years 2009 to 2011), and RARP (n = 262, years 2012 to 2014). Our analysis included the last consecutive 100 RP for each surgical technique by a single surgeon. A logistic regression model adjusted for pre-and postoperative variables was done to evaluate whether transfusion, conversion, and post-operative complication rates were influenced by the approach. Results RARP was associated with significantly lower blood loss (400 vs. 600 and 600 ml, respectively), transfusion (6 vs. 21 and 21%, respectively), and shorter hospital stay (6 vs. 7 and 8 days, respectively), compared to LRP and RRP, and a lower conversion rate (1 vs. 12%) compared to LRP. Multivariate analysis adjusted for confounders confirmed that the risk of transfusion and conversion was significantly lower in the RARP group compared to the LRP and RRP groups. The RARP group was also associated with a significantly lower risk of complications compared to the RRP group and with a trend in favor of the RARP group compared to the LRP group. The 1-year continence rate was significantly higher in the RARP group compared to the RRP and LRP groups (80 vs. 72 and 68%, respectively). Conclusion The surgical approach affected the operative outcomes in a regional setting. The advantages of RARP over RRP (complications, transfusion, conversion, hospital stay, 1-year continence) were over LRP as well, with the only exception being complications.
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Affiliation(s)
| | - Daniele Mattevi
- Urology Clinic, Integrated University Hospital, Verona, Italy
| | | | - Tommaso Cai
- Department of Urology, Santa Chiara Hospital, Trento, Italy
| | | | | | - Marco Puglisi
- Department of Urology, Santa Chiara Hospital, Trento, Italy
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Chiodini S, Reinares-Fisac D, Espinosa FM, Gutiérrez-Puebla E, Monge A, Gándara F, Garcia R. Angstrom-Resolved Metal-Organic Framework-Liquid Interfaces. Sci Rep 2017; 7:11088. [PMID: 28894192 PMCID: PMC5593909 DOI: 10.1038/s41598-017-11479-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 08/23/2017] [Indexed: 11/19/2022] Open
Abstract
Metal-organic frameworks (MOFs) are a class of crystalline materials with a variety of applications in gas storage, catalysis, drug delivery or light harvesting. The optimization of those applications requires the characterization of MOF structure in the relevant environment. Dynamic force microscopy has been applied to follow dynamic processes of metal-organic-framework material. We provide images with spatial and time resolutions, respectively, of angstrom and seconds that show that Ce-RPF-8 surfaces immersed in water and glycerol experience a surface reconstruction process that is characterized by the diffusion of the molecular species along the step edges of the open terraces. The rate of the surface reconstruction process depends on the liquid. In water it happens spontaneously while in glycerol is triggered by applying an external force.
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Affiliation(s)
- Stefano Chiodini
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - Daniel Reinares-Fisac
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - Francisco M Espinosa
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - Enrique Gutiérrez-Puebla
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - Angeles Monge
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain
| | - Felipe Gándara
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain.
| | - Ricardo Garcia
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain.
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17
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Valle F, Brucale M, Chiodini S, Bystrenova E, Albonetti C. Nanoscale morphological analysis of soft matter aggregates with fractal dimension ranging from 1 to 3. Micron 2017; 100:60-72. [DOI: 10.1016/j.micron.2017.04.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 04/28/2017] [Accepted: 04/29/2017] [Indexed: 11/25/2022]
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18
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Carminati M, Giacometti M, Sampietro M, Chiodini S, Doles T, Ferrari G. Parallelizable Microfluidic Resistive On-Line Detector of Micrometric Aggregates of Biopharmaceutical Antibodies. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.proeng.2016.11.410] [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: 01/31/2023]
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Chiodini S, Luciani LG, Cai T, Molinari A, Morelli L, Cantaloni C, Barbareschi M, Malossini G. Unusual case of locally advanced and metastatic paratesticular liposarcoma: a case report and review of the literature. ACTA ACUST UNITED AC 2015; 87:87-9. [PMID: 25847905 DOI: 10.4081/aiua.2015.1.87] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 04/01/2015] [Indexed: 11/22/2022]
Abstract
Liposarcoma accounts for 20% of all sarcomas and is a rare occurrence in the paratesticular region. We present the case of a 66-year-old man with a massive liposarcoma of the right scrotum invading the lower limb and the abdominal wall skin. The case concerns an unusually large and aggressive liposarcoma (25 cm), presenting with multiple lung and nodal metastases. The patient had an unfavourable evolution with rapid progression of metastases, although there were no signs of local disease. In this case, a wide local excision was performed in order to obtain local control of the disease. Even though paratesticular sarcomas might have a more favourable evolution, the association with lung involvement carries an ominous prognosis. Diagnosis of paratesticular sarcoma should be kept in mind in case of irregular necrotic masses in the inguinal and scrotal region.
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Cai T, Gacci M, Mattivi F, Mondaini N, Migno S, Boddi V, Gacci P, Detti B, Gontero P, Chiodini S, Mereu L, Tateo S, Mazzoli S, Malossini G, Bartoletti R. Apple consumption is related to better sexual quality of life in young women. Arch Gynecol Obstet 2014; 290:93-8. [PMID: 24518938 DOI: 10.1007/s00404-014-3168-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 01/24/2014] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Even if some evidence exists of a positive correlation between regular intake of phytoestrogens, polyphenols, antioxidants and women's sexual health, there is not a study addressing the potential correlation between daily apple consumption and women's sexual function. We aim to assess whether there is a tie between daily apple intake and sexual function in a sample of healthy young sexually active Italian women, not complaining of any sexual disorders. MATERIALS AND METHODS Seven hundred and thirty-one women (mean age 31.9, range 18-43) were enrolled in this cross-sectional study (from September 2011 to April 2012). All participants completed anonymously the Female Sexual Function Index (FSFI) and were asked to report on their amount of daily apple consumption and their eating habits. On the basis of apple consumption all women were split into two groups: Group A--regular daily apple consumption, Group B--no regular apple consumption (<1 apple/day). The main outcome measure was the FSFI questionnaire result. RESULTS Three hundred and forty-three women reported a regular daily apple intake and were classified in Group A, while 388 were included in Group B. Group A had a significantly higher total (p = 0.001; Cohen's d = 3.39) and lubrication domain (p = 0.001; Cohen's d = 3.02) FSFI scores than participants in Group B. Multivariate analysis demonstrated that daily apple intake must be considered as an independent parameter (p = 0.002) in predicting a better score at questionnaire examination. DISCUSSION This study suggests a potential relationship between regular daily apple consumption and better sexuality in our young women population.
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Affiliation(s)
- Tommaso Cai
- Department of Urology, Santa Chiara Regional Hospital, Largo Medaglie d'Oro, 9, Trento, Italy,
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Luciani LG, Porpiglia F, Cai T, D'Elia C, Vattovani V, Giusti G, Tiscione D, Chiodini S, Peschechera R, Fiori C, Spina R, Parma P, Celia A, Malossini G. Operative safety and oncologic outcome of laparoscopic radical nephrectomy for renal cell carcinoma >7 cm: a multicenter study of 222 patients. Urology 2013; 81:1239-44. [PMID: 23608667 DOI: 10.1016/j.urology.2012.12.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 12/04/2012] [Accepted: 12/09/2012] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To evaluate the safety of laparoscopic radical nephrectomy (LRN) for renal cell carcinoma (RCC) >7 cm, addressing the issue of modality and risk factors for complications and open conversion, and to assess the oncologic outcome. METHODS The data of 222 patients undergoing LRN for RCC >7 cm prospectively enrolled from 2002 to 2010 at 5 urologic centers were reviewed. Transperitoneal LRN was performed by 5 experienced laparoscopic surgeons. The Clavien-Dindo classification was used to assess complications. Multivariable analysis of factors predictive of conversions was performed. Oncologic outcomes for survival were estimated using the Kaplan-Meier method. RESULTS Median tumor size was 8.5 cm, operative time was 180 minutes, and blood loss was 280 mL. Forty-two patients (19%) received a blood transfusion. Six (2.7%) patients had grade III-IV complications: 2 with postoperative bleeding requiring abdominal re-exploration and 1 each with adrenal injury, splenic injury, wound diastasis, and respiratory insufficiency. Twelve patients (5.4%) were converted to open surgery. The diameter was 11.9 in converted groups and 8.5 cm in nonconverted groups (P = .001). Multivariable analysis revealed that pathologic stage was the only independent predictor of conversion (P = .002). The 5-year overall (OS), cancer-specific (CSS), and progression-free (PFS) survival was 74%, 78%, and 66%, respectively. The 5-year stage-adjusted CSS was 89% in pT2 and 40% in pT3 patients (P <.0001). Limitations of this study were its retrospective nature and the relatively short follow-up period for oncologic outcome. CONCLUSION LRN for large RCC is a safe operation. Stage pT3 is a risk factor for open conversion and is associated to significantly lower cancer-specific survival compared with pT2 stage.
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Satta G, Pilleri M, Garofalo E, Masala E, Pili C, Tocco A, Ursi M, D'Andrea I, Campagna M, Carta W, Castellet y Ballarà A, Chiodini S, Nonne T, Sartorello A, Addis M, Cocco P. [Assessment of congenital malformation risk in the progeny of the military and civilian personnel of the Salto di Quirra military base: preliminary results]. G Ital Med Lav Ergon 2012; 34:599-601. [PMID: 23405727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
INTRODUCTION We evaluated the congenital malformation rate in the progeny of the personnel of the Salto di Quirra military base in Sardinia. METHODS During 2011, we gathered questionnaire information on the reproductive history of 389 employees, more then 99% of those eligible for routine health surveillance. RESULTS the observed congenital malformation rate (20.1 x 10(-3), 95% CI 6.3 - 33.8) was lower than that reported by the Italian Registries of Congenital Malformations, and it did not vary by exposure to radiofrequency, elf electromagnetic fields, and solvents, and by jobs associated with alleged exposure to nanoparticles or alpha radiation. CONCLUSIONS Our findings suggest that the documented or alleged occupational exposures among the PISQ workforce did not increase the congenital malformation rate in the progeny.
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Affiliation(s)
- G Satta
- Università degli Studi di Cagliari, Asse Didattico, Dipartimento di Sanità Pubblica, Sezione di Medicina del Lavoro - Asse Didattico della Facoltà di Medicina, SS 554, km 4,500, 09042 Monserrato, Cagliari, Italy.
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Puccio F, Pandolfo G, Chiodini S, Benzi F, Solazzo M. Primary aorto-duodenal fistula as a late complication of radiotherapy: report of a case and review of the literature. Case Rep Gastroenterol 2008; 2:415-23. [PMID: 21897792 PMCID: PMC3166804 DOI: 10.1159/000164621] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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] [Indexed: 12/05/2022] Open
Abstract
Primary aorto-duodenal fistula (PADF) is a rare condition that may result in rapid exsanguination if untreated. PADF due to radiotherapy appears to be extremely rare with only a few cases reported in the medical literature. We report the case of a 61-year-old man who presented with massive gastrointestinal bleeding 25 years after surgery and radiotherapy for seminoma of the testicle and was successfully treated at our institution. We also review the literature on this very uncommon condition. A Medline search was conducted for the period from 1966 to June 2006 to identify case reports of PADF following radiotherapy. Only 7 cases of PADF due to radiotherapy were identified in addition to our own, 4 males and 3 females, aged 40 to 73 years, all treated for various forms of abdominal malignancies. The latency period ranged from 2 weeks to 25 years. None of the aortas were aneurysmatic. One patient died before he could be taken to the operating room. 5 patients underwent surgical repair and 4 survived. 2 patients underwent endovascular treatment but did not survive. PADF may develop up to 25 years after radiotherapy. Diagnosis should be considered when massive upper gastrointestinal bleeding develops in a patient who had previous abdominal radiotherapy, no matter how long before the episode of bleeding. Prompt surgical repair offers a reasonable chance of cure. Endovascular procedures do not appear to be efficacious.
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Affiliation(s)
- Francesco Puccio
- Department of Surgery, Hospital of Manerbio, Manerbio, Brescia, Azienda Ospedaliera di Desenzano del Garda (BS), Italy
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Abstract
A 77-year-old man with diabetes mellitus presented with a 2-month history of lumbago radiating to the right lower limb as well as high fever spikes. Physical examination revealed a distended abdomen with right lower quadrant tenderness. A computed tomographic scan of the abdomen revealed a large right retroperitoneal cavity containing an air-fluid level that was consistent with a gas-producing abscess. The patient began receiving intravenous antibiotics, but fever and abdominal pain persisted and a large, fluctuating, tender swelling appeared on the medial aspect of his right thigh and right calf. The patient underwent surgical exploration: a right lateral abdominal incision was performed, and the pus collection in retroperitoneal space was completely evacuated. We also made 3 separate incisions on the medial aspect of the right thigh and 1 incision on the upper calf, resulting in the drainage of pus. The patient made a slow but steady recovery.
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Abstract
The authors present the rationale of the laparoscopic approach to liver surgery, showing the technique of fully endoscopic and endoscopic-assisted formal and wedge hepatic resections and the early results of their experience. From 1993 to 1997, 38 liver resections have been attempted through the laparoscopic or the laparoscopic assisted approach. Out of these 38 resections, 5 were wedge resections, 11 were segmentectomies, 10 were left formal hepatectomies, 1 was an extended left hepatectomy, 5 were bisegmentectomies, 5 were right formal hepatectomies, and 1 was an extended right hepatectomy. In two cases, one segmentectomy and one bisegmentectomy, the procedures were converted to open surgery. Wedge, segmental, and left liver resections were usually performed through a fully endoscopic approach, whereas right liver resections were accomplished by a video-assisted approach. In all but six cases, the resections were attempted for malignancy. There were no intra-operative deaths. One patient died on postoperative day-1 because of liver failure and severe coagulopathy. The early results are comparable to those of conventional surgery, with the benefits derived from minimal access surgery. Laparoscopic liver resections are technically feasible with an acceptable morbidity and mortality rate, but extensive experience in conventional liver surgery, advanced laparoscopic surgery, and the availability of all requested technology are indispensable prerequisites.
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Hüscher CG, Napolitano C, Chiodini S, Recher A, Buffa PF, Lirici MM. Hepatic resections through the laparoscopic approach. Ann Ital Chir 1997; 68:791-7. [PMID: 9646540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hepatic surgery has been undergoing progressive modifications in surgical approach to liver, passing through tohraco-phrenolaparotomy to bilateral subcostal incision and current Makuuchi's. Laparoscopic liver surgery should not be considered a new surgery, but simply a new surgical approach, with difficulties but advantages too. Laparoscopic hepatic resections are feasible with low morbidity and mortality; the short and medium term results are comparable to those obtained with open surgery provided that the surgeon has a significant experience in open hepatic surgery, advanced laparoscopic surgery and the availability of all and pertinent instrumentation. The aim of this paper is to show the rationales formal of hepatic resections through the laparoscopic approach, focusing on the necessary instrumentation, the surgical technique and results.
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Affiliation(s)
- C G Hüscher
- Department of General and Thoracic Surgery, Istituto Nazionale dei Tumori, Milano, Italy
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27
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Hüscher CG, Lirici MM, Chiodini S, Recher A. Current position of advanced laparoscopic surgery of the liver. J R Coll Surg Edinb 1997; 42:219-25. [PMID: 9276552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
With the improvement of laparoscopic techniques and the development of new and dedicated technologies, endoscopic liver surgery has become feasible. While wedge liver resections are performed more and more frequently, laparoscopic anatomical liver resections are still at an early stage of development and are somewhat controversial. In 1993 we initiated formal laparoscopic liver resections in selected patients. From 1993 to December 1995 20 patients underwent endoscopic formal resections: the procedures comprised six left hepatectomies, five right hepatectomies, one of which extended to the segment IV, three mesohepatectomy, five segmentectomies and one bisegmentectomy. The operation time ranged from 120 to 270 min (average 193 min). In 17 out of 20 cases a Pringle manoeuvre was performed (mean occlusion time 45 min). No intra-operative complications occurred and there were no conversions in the whole series. Average intra-operative blood loss was 397.5 mL and 35% of patients required intro-operative blood transfusions. Post-operative mortality rate was 5% and post-operative morbidity rate was 45% (one coagulopathy with severe trombocytopaenia, six pleural effusions, one bile collection and four hematomas of the trocar sites). Such preliminary data are comparable with those of a group of 65 patients who underwent open anatomical liver resections from 1992 and 1995. Far from being a routine technique in liver surgery, the laparoscopic approach to forma liver resections may be a promising procedure in selected patients.
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Affiliation(s)
- C G Hüscher
- Department of General Surgery, Ospedale Vallecamonica, Esine, Italy
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Marchei P, Bianco V, Pignatelli E, Chiodini S, Santini D, Carico E, Marchei M, Vecchione A. Adjuvant treatment for breast cancer in the elderly. Anticancer Res 1996; 16:911-3. [PMID: 8687150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Eighty one patients with breast cancer stages I, II and III (T3a) were given adjuvant treatment with tamoxifen (Nolvadex), chemotherapy, or both. Most patients had estrogen and progesterone receptors measurement. Twenty one (63.6%) patients of the tamoxifen group were node positive, all 25 (100%) of the chemotherapy plus tamoxifen group and 13 (56.5%) of the chemotherapy alone group. Tamoxifen was administered for at least 3 years. Disease free survival and overall survival were substantially similar after treatment with tamoxifen or chemotherapy plus tamoxifen. Side effects were more numerous and severe in patients given chemotherapy. In receptor positive elderly breast cancer patients tamoxifen represents an excellent adjuvant therapy independently of disease stage. Chemotherapy should be reserved for subjects at high risk of recurrence in controlled clinical trials.
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Affiliation(s)
- P Marchei
- Department of Experimental Medicine, Università di Roma La Sapienza, Italy
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Huscher C, Marescaux J, Mutter D, Chiodini S. [Laparoscopic approach in hepatic surgery: segmentectomies II+III]. Presse Med 1996; 25:173. [PMID: 8728910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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31
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Marchei P, Santini D, Bianco V, Chiodini S, Reale MG, Simeoni F, Marchei GG, Vecchione A. Serum ostase in the follow-up of breast cancer patients. Anticancer Res 1995; 15:2217-22. [PMID: 8572628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The present study was carried out on 152 patients divided into three groups: A) 73 underwent radical surgery for breast carcinoma without signs of metastases; B) 31 patients with radiologic and scintigraphic evidence of bone metastases originating from malignant mammary neoplasia (14 with only one and 17 with two or more localizations); C) 48 affected by simple mammary cysts. No patients had a previous history of primary or secondary bone pathologies or renal, hepatic or endocrine ones. Besides this, no patient took drugs influencing the metabolic turnover of the bony tissue in the three months preceding the study. After surgery all patients underwent standard clinical and laboratory follow-up, the latter including, every 3 months, the evaluation of serum CA 15.3, CA 27.29 MCA, and ostase. The ostase cut-off, obtained by the statistical elaboration of the serum values of the 48 patients with benign mammary cysts and the 73 disease free patients, was 17 microg./L. The mean concentration in the three groups and two subgroups was: 13.76 microg./L (patients without metastases), 31.84 (patients with metastases), 18.4 (limited bony metastases), 40.04 (diffused bony metastases) and 5.36 (mammary cists). The diagnostic sensitivity of ostase proved superior to that of CA 15.3 (84% vs 75%) except when considering the subgroup with limited metastases (71.4% vs 72.7%), while the specificity was similar (around 78%). CA 27.29 and MCA were not useful as markers of metastasis. In a longitudinal-perspective study it was possible periodically to test these markers in 13 patients, at first, disease free and then with signs of bone progression evidence by skeletal scintigraphy. In 11 of these patients ostase and CA 15.3 showed increased values, an average 136 and 131 days respectively, before instrumental evidence of progression. None of the 13 patients, at the time of bone progression diagnosis, showed clinical, laboratory or instrumental signs of disease in other organs. The precocity of the serum increase of ostase could have a triple role: 1) accomplishment of a closer follow-up in patients at "high risk" of bone disease; 2) aid in the interpretation "in a neoplastic sense" of an "uncertain image of hypercaptation"; 3) accomplishment of a supporting or specific oncology treatment at an earlier stage which may be of some advantage as regards quality of life.
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Affiliation(s)
- P Marchei
- S.S. Diagnostica e Programmazione Terapeutica, University La Sapienza, Rome, Italy
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Santini D, Simeoni F, Bianco V, Chiodini S, Speranza I, Pignatelli E, Marchei P. [Treatment of stage-I seminoma. Critical review]. MINERVA UROL NEFROL 1995; 47:31-8. [PMID: 7570258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- D Santini
- Università degli Studi di Roma La Sapienza, Roma Servizio Speciale Diagnostica e Programmazione Terapeutica
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Bianco V, De Benedetto A, Simeoni F, Toto A, Paris E, Chiodini S, Marchei P. [Prognostic factors in operated breast carcinoma]. Minerva Med 1995; 86:17-20. [PMID: 7753433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The traditional prognostic factors (tumour size, lymph node involvement, receptor status) have now been shown to have limits in terms of prognostic definition. These limits may be partially overcome when parameters exist to determine the extent of tumour biological aggression and the patient's degree of immune response. It is important to clarify these links because they may lead to more precise indications regarding the prognosis and choice of therapy, above all in cases of breast cancer operated with no lymph node involvement. Breast carcinoma is often surrounded by inflammatory cells showing host and tumour interaction. The aim of this study was to evaluate the prognostic value of lymphocyte infiltration in operated breast cancer. The degree of lymphocyte infiltration observed in 56 breast cancer patients was compared with other prognostic factors (tumour size, lymph node status, histological variants, necrotic areas and desmoplastic reaction). This preliminary study allowed the authors to examine the degree of peritumoral lymphocyte density as an important predictive index of overall survival in patients with breast cancer and N-.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Breast/pathology
- Breast Neoplasms/mortality
- Breast Neoplasms/pathology
- Breast Neoplasms/surgery
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Ductal, Breast/surgery
- Carcinoma, Lobular/mortality
- Carcinoma, Lobular/pathology
- Carcinoma, Lobular/surgery
- Female
- Humans
- Lymphocytes, Tumor-Infiltrating
- Mastectomy
- Middle Aged
- Prognosis
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Affiliation(s)
- V Bianco
- Dipartimento di Medicina Sperimentale, Università degli Studi di Roma La Sapienza
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Caruso U, Bianco V, Chiodini S, Riondino G, Veronesi S, Giunta S. [Clinico-epidemiological findings in breast carcinoma in elderly patients]. Minerva Med 1995; 86:33-6. [PMID: 7753435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Old age certainly represents one of the major risk factors for the development of neoplasia. In breast cancer the incidence rises with age and continues until the age of 84. In EEC countries approximately 140,000 new cases are reported every year and at the end of the 80s there were 10,983 deaths from breast cancer in Italy, an increase of over per 1000 women each year. Fifty par cent of new cases were diagnosed in women aged over 65. The efficiency of a screening programme is evaluated by the fall in mortality rates in the population included in the programme compared to that not included. Results from controlled studies have confirmed the efficacy of breast cancer screening in women aged between 50-70, showing a significant drop in mortality rates which range between 21 and 36%. Adequate diagnostic and therapeutic management are of primary importance and screening programmes are organised in highly efficient structures using specifically trained staff. This underlines the need to set up appropriate services and structures for the prevention and treatment of breast cancer in elderly women, given that the latter represent the most frequently affected age group. Old age should be considered a natural extension of life and all elderly women have the right to receive treatment to prevent breast cancer.
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Affiliation(s)
- U Caruso
- Dipartimento di Chirurgia, Università degli Studi di Roma Tor Vergata
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35
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Emre S, Schwartz ME, Mor E, Kishikawa K, Yagmur O, Thiese N, Sheiner P, Jindal RM, Chiodini S, Miller CM. Obviation of prereperfusion rinsing and decrease in preservation/reperfusion injury in liver transplantation by portal blood flushing. Transplantation 1994; 57:799-803. [PMID: 8154023 DOI: 10.1097/00007890-199403270-00004] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [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: 01/29/2023]
Abstract
Liver allografts are traditionally rinsed with cold lactated Ringer's (LR) prereperfusion to clear K(+)-rich preservation solution from the hepatic vasculature. LR has been shown, however, to be injurious to the graft. By restoring portal blood flow without rinsing and discarding the initial blood traversing the liver (PB flush), we sought to eliminate rinsing without inducing hyperkalemia. Between August 1988 and December 1992, 481 OLTx were performed in 412 pts. Four rinsing methods were used sequentially: group 1 (157 pts)--low-flow-rate cold LR rinse (500 ml, 100 ml/min via standard i.v. tubing at 100 cm H2O [LFLR]) during lower caval anastomosis; Group 2 (120 pts)--LFLR as in group 1, at reperfusion, 500 ml PB flush via IVC catheter; group 3 (66 pts)--high-flow-rate LR rinse (500 ml, 1 L/min using large-bore tubing with 100 cm H2O rinsing pressure [HFLR]), PB flush as in group 2; Group 4 (62 pts)--no LR rinse; PB flush as in groups 2 and 3. Poor early graft function (PEGF) was defined as peak ALT or AST > 2500 U or PT > 16 sec (on POD 2); PEGF causing re-OLTx or death within 14 days was called primary nonfunction (PNF). Group 1 and Group 3 had high PEGF rates. Group 4 had significantly less PEGF than Group 1, with a trend toward a significant difference from Group 3. In Group 1, 3 pts. had intraoperative hyperkalemic cardiac arrest; this did not occur when PB flush was performed. PB flush without prior rinsing optimizes graft function without risk of hyperkalemia. LR rinse, alone or followed by PB flush, is unnecessary and may be deleterious.
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Affiliation(s)
- S Emre
- Department of Surgery, Mount Sinai School of Medicine, City University of New York, New York 10029
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Chiodini S, Sung MW, Sheiner P, Mor E, Schwartz ME, Miller CM. Liver transplantation for hepatocellular carcinoma: experience at The Mount Sinai Hospital. Mt Sinai J Med 1994; 61:37-9. [PMID: 8183291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- S Chiodini
- Department of Surgery, Mount Sinai Hospital, New York, NY 10029
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Mor E, Schwartz ME, Sheiner PA, Menesses P, Hytiroglou P, Emre S, Kishikawa K, Chiodini S, Miller CM. Prolonged preservation in University of Wisconsin solution associated with hepatic artery thrombosis after orthotopic liver transplantation. Transplantation 1993; 56:1399-402. [PMID: 8279010 DOI: 10.1097/00007890-199312000-00024] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.6] [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: 01/29/2023]
Abstract
Hepatic artery thrombosis (HAT) after liver transplantation (LTx) usually mandates retransplantation. Prolonged preservation with Eurocollins solution has been associated with HAT. We reviewed our experience with 359 LTx patients to identify risk factors for HAT. All grafts were preserved in University of Wisconsin solution. HAT developed in 12 patients (3%) within 50 days. Seven patients were asymptomatic; four presented with biliary sepsis and 1 with poor graft function. Two patients had suffered acute rejection; another 2 had severe preservation injury. Technical problems accounted for 4 cases; in the remaining 8, no etiology was found. Diagnosis was at a mean 14.7 days after LTx. One patient maintains normal graft function 3 years after LTx without intervention. Eight underwent re-LTx, 3 of whom died. Routine surveillance via duplex enabled early diagnosis and revascularization in 3 patients; in all 3, no biliary complications occurred between 6 and 20 months. Overall graft and patient survival after HAT were 33.3% and 75%, respectively. Cold ischemic time (CIT) averaged 813 min in patients with HAT and 669 min in those without HAT (P < .05). HAT occurred in 7/165 patients with CIT > 12 hr, and in 3/234 patients with CIT < 12 hr (P = 0.0699). By avoiding CIT > 12 hr, we have recently avoided HAT in 78 consecutive patients. We conclude that CIT > 12 hr may increase the risk of HAT. When HAT is diagnosed before biliary sepsis develops, flow can often be restored and retransplantation averted.
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Affiliation(s)
- E Mor
- Department of Surgery, Mount Sinai Medical Center, New York, New York 10029-6574
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Abstract
Right and left paracardial dissection represents an obligatory step in gastrectomy for gastric cancer of the lower half of the stomach because a second-level lymphadenectomy is part of the radical surgery for malignancy at this site. Whereas right and left paracardial dissection is easily accomplished during total gastrectomy, there is doubt as to whether subtotal gastrectomy achieves the same radical clearance of these groups of lymph nodes. This study therefore compared the number of lymph nodes dissected and the frequency of metastases in these compartments in 14 patients undergoing total gastrectomy and 22 submitted to subtotal gastrectomy. The mean number of lymph nodes dissected in the right paracardial compartment was 7.1 per patient undergoing total gastrectomy and 6.7 per patient in subtotal gastrectomy (P = 0.7). The mean numbers of left paracardial lymph nodes dissected in total and subtotal gastrectomy were 3.4 and 4.1 per patient respectively (P = 0.3). These data show that the same degree of radical clearance can be achieved in these nodal compartments, irrespective of the extent of gastric resection.
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Affiliation(s)
- C Hüscher
- Istituto Nazionale Tumori, Milan, Italy
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Franciolini G, Momoli G, Minelli L, Mutolo F, Franchini MA, Chiodini S, Zorzi F. Cutaneous metastases from carcinoma of the cervix. Tumori 1990. [PMID: 2399573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Skin metastases from internal malignancies are rare, particularly those originating from carcinoma of the cervix: only 11 cases have been reported in the medical literature since 1940. We describe the case of a cutaneous metastases from a squamous-cell carcinoma of the cervix that was solitary, unusual for its location, and with the longest survival reported so far.
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Affiliation(s)
- G Franciolini
- Department of Obstetrics and Gynecology, Spedali Civili di Brescia, Italy
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Huscher C, Biraghi M, Chiodini S, Recher A, Torri F, Zamboni F. [Glypressin and emergency sclerotherapy, deferred emergency shunt (Warren, portacaval, mesocaval): new tactics in the treatment of severe hemorrhage by esophagogastric varices in cirrhotic patients]. G Chir 1990; 11:429-33. [PMID: 2282278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Transplenic decompression of esophageal varices by distal splenorenal shunt according to Warren (DSRS) aims to a selective detention of the esophago-gastric varices, also assuring an adequate portal perfusion and hypertensive state of the porto-mesenteric district. The DSRS though, should and must not be performed in emergency as a high mortality rate is registered in all cases of emergency porto-systemic derivations. A mortality risk is reported even during endoscopic sclerosis if performed in emergency compared to the elective procedure. The scope of our study was to test the validity of a new approach of the hemorrhagic cirrhotic patient: the end point was to stop the bleeding with Glypressin and deferred sclerotherapy, associating a selective shunt at 40-60 days. Out of 32 patients with esophago-gastric variceal bleeding, 8 were selected also for derivative surgery. Results show Glypressin as the first and best therapeutic approach. The drug in many cases stops bleeding or at least reduces the blood loss allowing an easier endoscopic sclerosis. Further sclerosis and/or surgical therapy may assure variceal eradication.
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Affiliation(s)
- C Huscher
- Divisione di Chirurgia Generale e Centro di Gastroenterologia ed Endoscopia, Ospedale La Memoria Gavardo, Brescia
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Hüscher C, Chiodini S, Torri F. Alkaline reflux gastritis: late results on a controlled trial of diagnosis and treatment. Ann Surg 1987; 205:755-6. [PMID: 3592819 PMCID: PMC1493059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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