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Lo Giudice G, Angelini E, Bini S, Candian T, Crudeli C, Galan A. Outcome of cataract surgery in children affected by malignancies other than retinoblastoma with eye-lens radiation exposure. Eur J Ophthalmol 2021; 32:11206721211009445. [PMID: 33843295 DOI: 10.1177/11206721211009445] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To describe, retrospectively, the visual outcome, feasibility, and safety of cataract surgery in a pediatric population affected by iatrogenic cataract, secondary to systemic oncological treatment for malignancies other than retinoblastoma. METHODS Young patients, affected by radiation-induced cataract, who were referred to the San Paolo Ophthalmic Center in Padova between 2010 and 2017, were included in the study. All patients had previously received radiotherapy and/or chemotherapy treatment for malignancies, between 2004 and 2013. All medical records of infants who underwent cataract surgery were accurately reviewed. RESULTS Eighteen eyes out of 11 patients included in the study underwent cataract surgery. The mean age at surgery was 9.7 ± 3.6 years. The interval between tumor diagnosis and cataract development was around 3 years. Mean follow-up after surgery was 15.4 ± 6.3 months. All eyes underwent posterior chamber intraocular lens implantation, posterior capsulotomy, and anterior vitrectomy in one time surgery. No intraoperative complications were shown. Post-operatively, only one eye received laser capsulotomy due to posterior capsule opacification. At the end of follow up, best-corrected visual acuity was 20/20 (LogMAR 0) in all eyes and significantly improved (p < 0.01) compared to baseline. CONCLUSIONS Iatrogenic-cataract surgery in pediatric oncological patients is a safe and effective way to improve visual acuity. Posterior capsulotomy and anterior vitrectomy at the time of surgery reduce the rate of posterior lens opacification and guarantee an excellent visual acuity in these patients.
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Affiliation(s)
- Giuseppe Lo Giudice
- San Paolo Ophthalmic Center, San Antonio Hospital - University Hospital, Padova, Italy
| | - Edoardo Angelini
- San Paolo Ophthalmic Center, San Antonio Hospital - University Hospital, Padova, Italy
| | - Silvia Bini
- San Paolo Ophthalmic Center, San Antonio Hospital - University Hospital, Padova, Italy
| | - Tommaso Candian
- San Paolo Ophthalmic Center, San Antonio Hospital - University Hospital, Padova, Italy
| | - Clorinda Crudeli
- San Paolo Ophthalmic Center, San Antonio Hospital - University Hospital, Padova, Italy
| | - Alessandro Galan
- San Paolo Ophthalmic Center, San Antonio Hospital - University Hospital, Padova, Italy
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Trivellone V, Ripamonti M, Angelini E, Filippin L, Rossi M, Marzachí C, Galetto L. Evidence suggesting interactions between immunodominant membrane protein Imp of Flavescence dorée phytoplasma and protein extracts from distantly related insect species. J Appl Microbiol 2019; 127:1801-1813. [PMID: 31509633 DOI: 10.1111/jam.14445] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 05/05/2019] [Revised: 09/03/2019] [Accepted: 09/06/2019] [Indexed: 12/14/2022]
Abstract
AIMS In this study, binding between the immunodominant membrane protein Imp of the 16SrV-D phytoplasma associated with Flavescence dorée disease (FD-Dp) and insect proteins of vectors and non-vectors of FD-Dp was tested. METHODS AND RESULTS Six Auchenorrhyncha species, from distantly related groups were selected: Scaphoideus titanus, Euscelidius variegatus, Macrosteles quadripunctulatus, Zyginidia pullula (Cicadomorpha), Ricania speculum and Metcalfa pruinosa (Fulgoromorpha). The vector status of each species was retrieved from the literature or determined by transmission trials in this study. A His-tagged partial Imp protein and a rabbit polyclonal antibody were synthesized and used for Western and Far-Western dot Blot (FWdB) experiments. Total native and membrane proteins (MP) were extracted from entire bodies and organs (gut and salivary glands) of each insect species. FWdB showed decreasing interaction intensities of Imp fusion protein with total proteins from entire bodies of S. titanus, E. variegatus (competent vectors) and M. quadripunctulatus (non-vector), while no interaction signal was detected with the other three species (non-vectors). A strong signal detected upon interaction of FD-D Imp and MP from guts of closely related insects supports the role of this organ as the first barrier to ensure successful transmission. CONCLUSIONS Our results showed that specific Imp binding, correlated with vector status, is involved in interactions between FD-Dp and insect proteins. SIGNIFICANCE AND IMPACT OF THE STUDY Integrating knowledge on host-pathogen protein-protein interactions and on insect phylogeny would help to identify the actual range of vectors of phytoplasma strains of economic importance.
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Affiliation(s)
- V Trivellone
- Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL, USA.,Council for Agricultural Research and Economics (CREA), Research Centre for Viticulture and Enology, Conegliano, TV, Italy
| | - M Ripamonti
- Institute for Sustainable Plant Protection, National Research Council, Turin, Italy.,Dipartimento di Scienze Agrarie, Forestali ed Alimentari DISAFA, Università degli Studi di Torino, Grugliasco, TO, Italy
| | - E Angelini
- Council for Agricultural Research and Economics (CREA), Research Centre for Viticulture and Enology, Conegliano, TV, Italy
| | - L Filippin
- Council for Agricultural Research and Economics (CREA), Research Centre for Viticulture and Enology, Conegliano, TV, Italy
| | - M Rossi
- Institute for Sustainable Plant Protection, National Research Council, Turin, Italy
| | - C Marzachí
- Institute for Sustainable Plant Protection, National Research Council, Turin, Italy
| | - L Galetto
- Institute for Sustainable Plant Protection, National Research Council, Turin, Italy
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Battiston E, Di Marco S, Angelini E, Mugnai L. The emergent diseases in grapevine nursery: Critical point analysis for developing a protected and sustainable propagation process. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191501026] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The diffusion of emergent pathogens in grapevine nursery is increasingly compromising the sanitary quality of the propagation material. The complexity of the problem lies on the plurality of plant diseases involved and on the high environmental and economic impact of the conventional methods applied to comply the phytosanitary standards. By a critical point analysis, the study suggests the development of nursery strategies focused on the sanitary quality of the production and on its long-term environmental sustainability.
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Ippolito E, Trodella L, Silipigni S, D'Angelillo R, Di Donato A, Fiore M, Grasso A, Angelini E, Ramella S, Altomare V. Estimating the Value of Surgical Clips for Target Volume Delineation in External Beam Partial Breast Radiotherapy. Clin Oncol (R Coll Radiol) 2014; 26:677-83. [DOI: 10.1016/j.clon.2014.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 07/15/2014] [Accepted: 07/21/2014] [Indexed: 11/25/2022]
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Angelini E, Batmaz A, de Caro T, Faraldi F, Grassini S, Ingo GM, Riccucci C. The role of surface analysis in the strategies for conservation of metallic artefacts from the Mediterranean Basin. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5512] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- E. Angelini
- Department of Applied Science and Technology; Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - A. Batmaz
- Department of Protohistory and Near Eastern Archaeology; Ege University; TR 35100 Bornova İzmir Turkey
| | - T. de Caro
- Institute for the Study of Nanostructured Materials; Italian National Research Council; 00016 Monterotondo Scalo Roma Italy
| | - F. Faraldi
- Department of Applied Science and Technology; Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - S. Grassini
- Department of Applied Science and Technology; Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - G. M. Ingo
- Institute for the Study of Nanostructured Materials; Italian National Research Council; 00016 Monterotondo Scalo Roma Italy
| | - C. Riccucci
- Institute for the Study of Nanostructured Materials; Italian National Research Council; 00016 Monterotondo Scalo Roma Italy
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Papadopoulou O, Delagrammatikas M, Vassiliou P, Grassini S, Angelini E, Gouda V. Surface and interface investigation of electrochemically induced corrosion on a quaternary bronze. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- O. Papadopoulou
- Laboratory of Physical Chemistry, School of Chemical Engineering; National Technical University of Athens; 9 Iroon Polytechniou street 15780 Athens Greece
| | - M. Delagrammatikas
- Laboratory of Physical Chemistry, School of Chemical Engineering; National Technical University of Athens; 9 Iroon Polytechniou street 15780 Athens Greece
| | - P. Vassiliou
- Laboratory of Physical Chemistry, School of Chemical Engineering; National Technical University of Athens; 9 Iroon Polytechniou street 15780 Athens Greece
| | - S. Grassini
- Department of Applied Science and Technology; Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - E. Angelini
- Department of Applied Science and Technology; Politecnico di Torino; Corso Duca degli Abruzzi 24 10129 Torino Italy
| | - V. Gouda
- National Research Centre; El-Tahir Street Dokki 12622 Cairo Egypt
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Faraldi F, Angelini E, Mezzi A, Riccucci C, de Caro T, Di Carlo G. Surface studies of environmental reactive species during exhibition or storage of ancient Ag-based artefacts. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5445] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- F. Faraldi
- Department of Applied Science and Technology; Polytechnic of Turin; Corso Duca degli Abruzzi 24 10129 Turin Italy
| | - E. Angelini
- Department of Applied Science and Technology; Polytechnic of Turin; Corso Duca degli Abruzzi 24 10129 Turin Italy
| | - A. Mezzi
- Institute for the Study of Nano-structured Materials-CNR; 00016 Monterotondo Scalo Rome Italy
| | - C. Riccucci
- Institute for the Study of Nano-structured Materials-CNR; 00016 Monterotondo Scalo Rome Italy
| | - T. de Caro
- Institute for the Study of Nano-structured Materials-CNR; 00016 Monterotondo Scalo Rome Italy
| | - G. Di Carlo
- Institute for the Study of Nano-structured Materials-CNR; 00016 Monterotondo Scalo Rome Italy
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Mezzi A, Riccucci C, de Caro T, Angelini E, Faraldi F, Grassini S, Gouda VK. Combined use of SA-XPS, XRD and SEM + EDS for the micro-chemical characterisation of Ag-based archaeological artefacts. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5385] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Mezzi
- Istituto per lo Studio dei Materiali Nanostrutturati del CNR; Area della Ricerca Roma 1-Montelibretti; Monterotondo Rome Italy
| | - C. Riccucci
- Istituto per lo Studio dei Materiali Nanostrutturati del CNR; Area della Ricerca Roma 1-Montelibretti; Monterotondo Rome Italy
| | - T. de Caro
- Istituto per lo Studio dei Materiali Nanostrutturati del CNR; Area della Ricerca Roma 1-Montelibretti; Monterotondo Rome Italy
| | - E. Angelini
- Dipartimento di Scienza Applicata e Tecnologia; Politecnico di Torino; Torino Italy
| | - F. Faraldi
- Dipartimento di Scienza Applicata e Tecnologia; Politecnico di Torino; Torino Italy
| | - S. Grassini
- Dipartimento di Scienza Applicata e Tecnologia; Politecnico di Torino; Torino Italy
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Altendorf H, Decencière E, Jeulin D, De sa Peixoto P, Deniset-Besseau A, Angelini E, Mosser G, Schanne-Klein MC. Imaging and 3D morphological analysis of collagen fibrils. J Microsc 2012; 247:161-75. [PMID: 22670759 DOI: 10.1111/j.1365-2818.2012.03629.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The recent booming of multiphoton imaging of collagen fibrils by means of second harmonic generation microscopy generates the need for the development and automation of quantitative methods for image analysis. Standard approaches sequentially analyse two-dimensional (2D) slices to gain knowledge on the spatial arrangement and dimension of the fibrils, whereas the reconstructed three-dimensional (3D) image yields better information about these characteristics. In this work, a 3D analysis method is proposed for second harmonic generation images of collagen fibrils, based on a recently developed 3D fibre quantification method. This analysis uses operators from mathematical morphology. The fibril structure is scanned with a directional distance transform. Inertia moments of the directional distances yield the main fibre orientation, corresponding to the main inertia axis. The collaboration of directional distances and fibre orientation delivers a geometrical estimate of the fibre radius. The results include local maps as well as global distribution of orientation and radius of the fibrils over the 3D image. They also bring a segmentation of the image into foreground and background, as well as a classification of the foreground pixels into the preferred orientations. This accurate determination of the spatial arrangement of the fibrils within a 3D data set will be most relevant in biomedical applications. It brings the possibility to monitor remodelling of collagen tissues upon a variety of injuries and to guide tissues engineering because biomimetic 3D organizations and density are requested for better integration of implants.
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Affiliation(s)
- H Altendorf
- Department of Image Processing, Fraunhofer Institute of Industrial Mathematics, Kaiserslautern, Germany.
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Mezzi A, De Caro T, Riccucci C, Angelini E, Faraldi F, Grassini S. Micro-chemical surface investigation of brittle carthaginian and roman silver artefacts. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.4845] [Citation(s) in RCA: 4] [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] [Indexed: 11/07/2022]
Affiliation(s)
- A. Mezzi
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Rome; Monterotondo; Italy
| | - T. De Caro
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Rome; Monterotondo; Italy
| | - C. Riccucci
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Rome; Monterotondo; Italy
| | - E. Angelini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
| | - F. Faraldi
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
| | - S. Grassini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
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Mezzi A, Angelini E, De Caro T, Grassini S, Faraldi F, Riccucci C, Ingo GM. Investigation of the benzotriazole inhibition mechanism of bronze disease. SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.4841] [Citation(s) in RCA: 29] [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: 11/07/2022]
Affiliation(s)
- A. Mezzi
- Institute for the Study of Nanostructured Materials; CNR, Area della Ricerca RM1-Montelibretti; Via Salaria km 29.3 Monterotondo Rome 00015 Italy
| | - E. Angelini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24 Torino Italy
| | - T. De Caro
- Institute for the Study of Nanostructured Materials; CNR, Area della Ricerca RM1-Montelibretti; Via Salaria km 29.3 Monterotondo Rome 00015 Italy
| | - S. Grassini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24 Torino Italy
| | - F. Faraldi
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24 Torino Italy
| | - C. Riccucci
- Institute for the Study of Nanostructured Materials; CNR, Area della Ricerca RM1-Montelibretti; Via Salaria km 29.3 Monterotondo Rome 00015 Italy
| | - G. M. Ingo
- Institute for the Study of Nanostructured Materials; CNR, Area della Ricerca RM1-Montelibretti; Via Salaria km 29.3 Monterotondo Rome 00015 Italy
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Mezzi A, Angelini E, Riccucci C, Grassini S, De Caro T, Faraldi F, Bernardini P. Micro-structural and micro-chemical composition of bronze artefacts from Tharros (Western Sardinia, Italy). SURF INTERFACE ANAL 2012. [DOI: 10.1002/sia.4804] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- A. Mezzi
- Istituto per lo Studio dei Materiali Nanostrutturati; CNR Area della Ricerca RM1-Montelibretti; via Salaria Km 29.3; 00015; Monterotondo; Rome; Italy
| | - E. Angelini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
| | - C. Riccucci
- Istituto per lo Studio dei Materiali Nanostrutturati; CNR Area della Ricerca RM1-Montelibretti; via Salaria Km 29.3; 00015; Monterotondo; Rome; Italy
| | - S. Grassini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
| | - T. De Caro
- Istituto per lo Studio dei Materiali Nanostrutturati; CNR Area della Ricerca RM1-Montelibretti; via Salaria Km 29.3; 00015; Monterotondo; Rome; Italy
| | - F. Faraldi
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
| | - P. Bernardini
- Soprintendenza Archeologica alle province di Cagliari e Oristano; Cagliari; Italy
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Angelini E, Caro T, Mezzi A, Riccucci C, Faraldi F, Grassini S. Degradation mechanisms occurring in precious metallic artefacts. SURF INTERFACE ANAL 2011. [DOI: 10.1002/sia.3854] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- E. Angelini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
| | - T. Caro
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Monterotondo; Rome; Italy
| | - A. Mezzi
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Monterotondo; Rome; Italy
| | - C. Riccucci
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Monterotondo; Rome; Italy
| | - F. Faraldi
- Istituto per lo Studio dei Materiali Nanostrutturati-CNR; Area della Ricerca RM1-Montelibretti; via Salaria km 29.3; 00015; Monterotondo; Rome; Italy
| | - S. Grassini
- Dipartimento Scienza dei Materiali e Ingegneria Chimica; Politecnico di Torino; Corso Duca degli Abruzzi 24; Torino; Italy
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Angelini E, Grassini S, Parvis M, Zucchi F. An in situ investigation of the corrosion behaviour of a weathering steel work of art. SURF INTERFACE ANAL 2011. [DOI: 10.1002/sia.3842] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- E. Angelini
- Department of Materials Science and Chemical Engineering; Politecnico di Torino; 10129; Torino; Italy
| | - S. Grassini
- Department of Materials Science and Chemical Engineering; Politecnico di Torino; 10129; Torino; Italy
| | - M. Parvis
- Department of Electronics; Politecnico di Torino; 10129; Torino; Italy
| | - F. Zucchi
- Corrosion Study Center ‘A. Daccò’; TekneHub, Università di Ferrara; 44100; Ferrara; Italy
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Grassini S, Angelini E, Parvis M, Faraldi F. Surface modification plasma treatments of PMMA optical fibres for sensing applications. SURF INTERFACE ANAL 2011. [DOI: 10.1002/sia.3843] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- S. Grassini
- Department of Materials Science and Chemical Engineering; Politecnico di Torino; Italy
| | - E. Angelini
- Department of Materials Science and Chemical Engineering; Politecnico di Torino; Italy
| | - M. Parvis
- Department of Electronics; Politecnico di Torino; Italy
| | - F. Faraldi
- Department of Materials Science and Chemical Engineering; Politecnico di Torino; Italy
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Angelini E, Batmaz A, Cilingiroglu A, Grassini S, Ingo GM, Riccucci C. Tailored analytical strategies for the investigation of metallic artefacts from the Ayanis Fortress in Turkey. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3258] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Rosalbino F, De Negri S, Saccone A, Angelini E, Delfino S. Bio-corrosion characterization of Mg-Zn-X (X = Ca, Mn, Si) alloys for biomedical applications. J Mater Sci Mater Med 2010; 21:1091-1098. [PMID: 20020186 DOI: 10.1007/s10856-009-3956-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Accepted: 11/25/2009] [Indexed: 05/28/2023]
Abstract
The successful applications of magnesium-based alloys as biodegradable orthopedic implants are mainly inhibited due to their high degradation rates in physiological environment. This study examines the bio-corrosion behaviour of Mg-2Zn-0.2X (X = Ca, Mn, Si) alloys in Ringer's physiological solution that simulates bodily fluids, and compares it with that of AZ91 magnesium alloy. Potentiodynamic polarization and electrochemical impedance spectroscopy results showed a better corrosion behaviour of AZ91 alloy with respect to Mg-2Zn-0.2Ca and Mg-2Zn-0.2Si alloys. On the contrary, enhanced corrosion resistance was observed for Mg-2Zn-0.2Mn alloy compared to the AZ91 one: Mg-2Zn-0.2Mn alloy exhibited a four-fold increase in the polarization resistance than AZ91 alloy after 168 h exposure to the Ringer's physiological solution. The improved corrosion behaviour of the Mg-2Zn-0.2Mn alloy with respect to the AZ91 one can be ascribed to enhanced protective properties of the Mg(OH)(2) surface layer. The present study suggests the Mg-2Zn-0.2Mn alloy as a promising candidate for its applications in degradable orthopedic implants, and is worthwhile to further investigate the in vivo corrosion behaviour as well as assessed the mechanical properties of this alloy.
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Affiliation(s)
- F Rosalbino
- Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Torino, Italy.
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Angelini E, Grassini S, Ingo GM, Mombello D, Fracassi F, Palumbo F. Surface analysis of SiO2-like high-barrier thin films for protection of silver artefacts. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3257] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rosalbino F, Angelini E, Zanicchi G, Carlini R, Marazza R. Electrochemical corrosion study of Sn–3Ag–3Cu solder alloy in NaCl solution. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.07.030] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rosalbino F, Angelini E, Macciò D, Saccone A, Delfino S. Application of EIS to assess the effect of rare earths small addition on the corrosion behaviour of Zn–5% Al (Galfan) alloy in neutral aerated sodium chloride solution. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2008.08.063] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Angelini E, Bazzo I, Savino M, Borgo M. Ochratoxin a: comparison of extraction methods from grapes and quantitative determination by different competitive enzyme-linked immunosorbent assay kits. J Food Prot 2008; 71:2488-96. [PMID: 19244903 DOI: 10.4315/0362-028x-71.12.2488] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The European Community has recently established a maximum limit for ochratoxin A (OTA) concentration in grapevine products, but many practical difficulties remain concerning the establishment of optimum cost-effective methods of quantification. The performance of four extraction procedures and three commercial competitive enzyme-linked immunosorbent assays (cELISAs) for grapes were compared. Results differed for the extractions and the cELISA kits. The advantage of using immunoaffinity columns (IACs) in the extraction was the excellent detection limit, which was between 0.06 and 0.0075 ng ml(-1) depending on the cELISA kit used. Despite lower sensitivity (between 1.2 and 0.15 ng ml(-1) depending on the cELISA kit), an extraction method in liquid phase, which was simple and inexpensive, was confirmed as suitable for quantifying OTA at levels estimated to be dangerous for human health. Two of the three cELISA kits produced satisfactory results. When these two cELISAs were coupled with IAC extraction, the lower quantification limits were 0.010 and 0.0075 ng ml(-1), respectively, and the dynamic ranges were 50 and 27, respectively. The most reliable procedures were then compared with the reference method, high-performance liquid chromatography plus fluorescent detection coupled with an IAC. The results were very similar, although the cELISAs generally provided slightly higher values than did the chromatography method. The IAC method coupled with the cELISA was four times more sensitive than was the IAC method coupled with the chromatography method. The cELISA detection techniques were excellent alternatives to the already established chromatographic protocols, especially for mass screening and for determining concentrations of OTA as low as 0.010 ng ml(-1).
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Affiliation(s)
- E Angelini
- C.R.A.-VIT Centro per la Ricerca in Viticoltura, Viale XXVIII Aprile 26, 31015 Conegliano (TV), Italy.
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El Berbari R, Bloch I, Redheuil A, Angelini E, Mousseaux E, Frouin F, Herment A. An automated myocardial segmentation in cardiac MRI. ACTA ACUST UNITED AC 2008; 2007:4508-11. [PMID: 18003007 DOI: 10.1109/iembs.2007.4353341] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In this paper we present an automatic approach to segment Cardiac Magnetic Resonance (CMR) images. A preprocessing step that consists in filtering the image using connected operators (area opening and closing filters) is applied in order to homogenize the cavity and solve the problems due to the papillary muscles. Thereby the GVF snake algorithm is applied with one point clicked in the cavity as initialization and an optimized tuning of parameters for the endocardial contour extraction. The epicardial border is then obtained using the endocardium as initialization. The performance of the proposed method was assessed by experimentation on thirty-nine CMR images. A high agreement between manual and automatic contours was obtained with correlation scores of 0.96 for the endocardium and 0.90 for the epicardium. Overlapping percentage, mean and maximum distances between the two contours show a good performance of the method.
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Affiliation(s)
- R El Berbari
- INSERM U678, UPMC, F-75013 Paris France; GET, ENST TSI Department, CNRS UMR 5141, F-75013 Paris, France.
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Anquez J, Angelini E, Bloch I, Merzoug V, Bellaiche-Millischer AE, Adamsbaum C. Interest of the steady state free precession (SSFP) sequence for 3D modeling of the whole fetus. ACTA ACUST UNITED AC 2008; 2007:771-4. [PMID: 18002070 DOI: 10.1109/iembs.2007.4352404] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Fetal magnetic resonance imaging (MRI) has been gaining interest over the last two decades. Current fast MRI sequences provide imaging data of the whole uterus in less than 20 seconds, avoiding fetal motion related artifacts without any maternal or fetal sedation. MRI has proved to be a useful adjunct to echographic screening for prenatal diagnosis. However, MRI volumetric data is still mainly interpreted on 2D slices and 3D applications remain limited. In this paper, we discuss the qualities of the SSFP MRI sequences to provide adequate data for 3D segmentation and modeling of the fetus. Potential exploitations of 3D segmentation and derived anatomical models cover several domains: biometric and morphologic clinical studies, quantitative longitudinal studies of normal and abnormal fetus developments, direct visualization of the overall fetus body and simulations in different fields (surgery, radiation dosimetry,...).
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Affiliation(s)
- J Anquez
- Signal and Image Processing Department, GET-Telecom Paris (ENST)-CNRS UMR 5141 LTCI, Paris, France
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Rosalbino F, Angelini E, Macciò D, Saccone A, Delfino S. Influence of rare earths addition on the corrosion behaviour of Zn–5%Al (Galfan) alloy in neutral aerated sodium sulphate solution. Electrochim Acta 2007. [DOI: 10.1016/j.electacta.2007.05.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Berutti E, Angelini E, Rigolone M, Migliaretti G, Pasqualini D. Influence of sodium hypochlorite on fracture properties and corrosion of ProTaper Rotary instruments. Int Endod J 2006; 39:693-9. [PMID: 16916358 DOI: 10.1111/j.1365-2591.2006.01134.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIM To evaluate the influence of immersion in NaOCl on resistance to cyclic fatigue fracture and corrosion of ProTaper NiTi Rotary instruments. METHODOLOGY A total of 120 new ProTaper NiTi Rotary files (F2) were randomized and assigned to three different groups of 40 each. Group 1 was the control group; 20 mm (excluding the shaft) of group 2 instruments were immersed in 5% NaOCl at 50 degrees C for 5 min; instruments in group 3 were completely immersed in 5% NaOCl at 50 degrees C for 5 min. All instruments were then tested for cyclic fatigue, recording the time in seconds to fracture. Data were analysed by the Kruskall-Wallis test and post-hoc multiple comparisons (P < 0.05). Micromorphological and microchemical analyses were also completed by means of a field emission scanning electron microscopy (SEM) on those instruments in group 3 that had undergone early fracture. RESULTS Instruments in group 3 had a significantly lower resistance to fracture because of cyclic fatigue than those in groups 1 and 2 (P < 0.001). In some instruments in group 3, early fracture occurred after only a few seconds of fatigue testing. SEM observations revealed evident signs of corrosion of the fractured instruments. CONCLUSION Group 3 had significantly reduced resistance to cyclic fatigue compared with instruments in groups 1 and 2. The phenomenon of early fracture may be attributed to galvanic corrosion induced by the presence of dissimilar metals, where one acts as the cathode of a galvanic couple, established when the instrument is immersed in NaOCl solution. The NiTi alloy may acts as the anode and thus undergoes corrosion.
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Affiliation(s)
- E Berutti
- Department of Endodontics, School of Dentistry, University of Turin, Turin, Italy
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Luponio C, Causa F, Angelini E, Pinasco MR, Ambrosio L. Effect of micrometer-scale metallic fillers on the mechanical and corrosion resistance properties of alternative materials for conservative dentistry. J Appl Biomater Biomech 2006; 4:143-152. [PMID: 20799200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In conservative dentistry, glass-ionomer cements (GICs) have been proposed as substitutes for composite resins. This is because the latter, although widely used over the last 10 yrs, exhibit inadequate physico-chemical properties. Although the performance of a typical commercial GIC is not yet optimal for restorative dentistry, the addition of metallic filler could improve this. In this study, a series of commercially available GICs were incorporated in trial dental amalgams, whose mechanical and calorimetric properties and morphologies, were examined. The metallic component of these amalgams comprised one of three metallic fillers, each including micrometer-scale metal particles of a different shape. The corrosion resistance of the amalgams, in fluids simulating the oral cavity environment, was also studied. The addition of metallic filler to GIC produced a general improvement in mechanical properties. Of particular note were increases in the elastic modulus, up to around sixfold, with the addition of Valiant metallic filler to the GIC Fuji II, and of the stress at break, up to around fourfold, for the New Gen metallic filler/GIC Fuji II amalgam. In these cases, the mechanical properties of dentine were studied. Micrographic observations showed a highly compact structure of the added GICs, thus reflecting a reduction in shrinkage. Calorimetric and dilatometric analyses further confirmed the suitability for applications in preservative dentistry. Finally, with respect to corrosion resistance, the effect of the introduction of the metallic filler was beneficial in samples with low porosity.
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Affiliation(s)
- C Luponio
- Department of Materials and Production Engineering, University of Naples ""Federico II"", Naples - Italy
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Angelini E, Grassini S, Rosalbino F, Fracassi F, Laera S, Palumbo F. PECVD coatings: analysis of the interface with the metallic substrate. SURF INTERFACE ANAL 2006. [DOI: 10.1002/sia.2168] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ingo GM, Angelini E, De Caro T, Bultrini G, Mezzi A. Combined use of XPS and SEM+ EDS for the study of surface microchemical structure of archaeological bronze Roman mirrors. SURF INTERFACE ANAL 2004. [DOI: 10.1002/sia.1789] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ingo GM, Angelini E, De Caro T, Bultrini G, Mezzi A. Microchemical investigation of archaeological copper-based artefacts used for currency in ancient Italy before the coinage. SURF INTERFACE ANAL 2004. [DOI: 10.1002/sia.1788] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rizzo G, Muscatello A, Angelini E, Capponi A. Abnormal cardiac function in fetuses with increased nuchal translucency. Ultrasound Obstet Gynecol 2003; 21:539-42. [PMID: 12808669 DOI: 10.1002/uog.137] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To evaluate cardiac function in structurally and chromosomally normal fetuses with increased nuchal translucency (NT). METHODS Forty-two structurally and chromosomally normal fetuses with increased NT at 11-14 weeks of gestation underwent fetal echocardiographic examination at 20-23 weeks. Fifty fetuses with normal NT values were considered as controls. Pulmonary and aortic peak velocity and time to peak velocities were measured as indices of ventricular systolic function. The ratios between the E-wave and A-wave (E/A) and the ratios between the E-wave and time velocity integral (E/TVI) at the level of both atrioventricular valves were evaluated as indices of ventricular diastolic function. RESULTS In fetuses with increased NT the E/A ratios were significantly decreased when compared to control fetuses at the level of both the mitral (0.52 +/- 0.09 vs. 0.60 +/- 0.10, P = 0.0002) and tricuspid (0.51 +/- 0.09 vs. 0.61 +/- 0.09, P < 0.0001) valves. Similar results were found for the E/TVI ratios (mitral valve 4.79 +/- 1.03 vs. 5.63 +/- 1.23, P = 0.0007 and tricuspid valve 4.40 +/- 0.88 vs. 5.19 +/- 0.82, P < 0.0001). No significant relationship was found between the degree of NT and the abnormalities in Doppler indices. There were no significant differences in Doppler systolic indices. CONCLUSION Structurally and chromosomally normal fetuses with increased NT have low E/A and E/TVI ratios at 20-23 weeks of gestation. These findings might indicate cardiac diastolic dysfunction.
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Affiliation(s)
- G Rizzo
- Department of Obstetrics and Gynecology, Universita di Roma 'Tor Vergata', Ospedale Fatebenefratelli, Isola Tiberina, Italy.
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Ingo GM, Angelini E, Calliari I, Dabalà M, De Caro T. Combined use of GDOES and SEM + EDS for the microchemical study of oxide layers grown at high temperature on Nimonic 80 A nickel-based superalloy. SURF INTERFACE ANAL 2002. [DOI: 10.1002/sia.1349] [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: 11/06/2022]
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Ingo GM, Angelini E, Bultrini G, Calliari I, Dabala M, De Caro T. Study of long-term corrosion layers grown on high-tin leaded bronzes by means of the combined use of GDOES and SEM + EDS. SURF INTERFACE ANAL 2002. [DOI: 10.1002/sia.1312] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ingo GM, Angelini E, Bultrini G, De Caro T, Pandolfi L, Mezzi A. Contribution of surface analytical techniques for the microchemical study of archaeological artefacts. SURF INTERFACE ANAL 2002. [DOI: 10.1002/sia.1311] [Citation(s) in RCA: 40] [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: 11/08/2022]
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Angelini E, d'Agostino R, Fracassi F, Grassini S, Rosalbino F. Surface analysis of PECVD organosilicon films for corrosion protection of steel substrates. SURF INTERFACE ANAL 2002. [DOI: 10.1002/sia.1273] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Picard V, Angelini E, Maillard A, Race E, Clavel F, Chêne G, Ferchal F, Molina JM. Comparison of genotypic and phenotypic resistance patterns of human immunodeficiency virus type 1 isolates from patients treated with stavudine and didanosine or zidovudine and lamivudine. J Infect Dis 2001; 184:781-4. [PMID: 11517441 DOI: 10.1086/323088] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2001] [Revised: 06/02/2001] [Indexed: 11/03/2022] Open
Abstract
Sequencing of reverse-transcriptase genes and recombinant virus assays were performed on paired isolates from antiretroviral drug-naive patients randomized to stavudine and didanosine (group 1; n = 21) or zidovudine and lamivudine (group 2; n = 21) at baseline and after > or = 12 months of follow-up. The T215Y mutation emerged in 13 (61.9%) and 2 (9.5%) isolates in groups 1 and 2, respectively (P < .0001). Furthermore, in group 1, mutations associated with multidideoxynucleoside resistance were selected in 3 isolates. In group 2, all isolates carried the M184V mutation. The median fold changes in susceptibilities to zidovudine, stavudine, and lamivudine were 16.4 and 1, 2.2 and 0.6, and 4.5 and > 38 in groups 1 and 2, respectively (P < .0001, all comparisons). These results suggest that the combination of stavudine and didanosine is associated more frequently with the emergence of zidovudine resistance and a decrease in susceptibility to stavudine than the combination of zidovudine and lamivudine.
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Affiliation(s)
- V Picard
- Laboratory of Virology, Hôpital Saint-Louis, Paris, France
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Pinasco MR, Angelini E, Cordano E, Magi E, Rosalbino F. Reliability of Pd based dental alloys regarding to corrosion resistance and production processes. J Mater Sci Mater Med 2000; 11:837-845. [PMID: 15348069 DOI: 10.1023/a:1008917915908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The knowledge of the relationship among chemical composition, microstructure, productive processes, functional properties, quality and price of the final product is an ever greater requirement for the firms producing dental alloys as well as for the dental laboratories making prosthesis. The present study deals with the evaluation of the corrosion resistance of high-Pd and Pd-Ag alloys by quantification of released ions following the recent European regulations suggested. Moreover the reliability of the alloys as far as concern their corrosion resistance was also investigated in relation to the different steps of alloy industrial production and restoration forming processes as well as after homogenization treatments followed by different cooling rate. The very complex microstructure of both alloys was greatly affected by the different casting conditions, deformation rate and thermal treatments used in alloy industrial production and prosthesis manufacturing. However the corrosion resistance of both alloys remained very good in all metallurgical states. The potentiodynamic tests allowed to distinguish among the structural conditions: the homogenization treatments, eliminating segregation inside the different phases, improved further the corrosion resistance of both alloys.
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Affiliation(s)
- M R Pinasco
- Dip. di Chimica e Chimica Ind., Università di Genova, Via Dodecaneso 31, 16146 Genova, Italia
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Rizzo G, Capponi A, Angelini E, Mazzoleni A, Romanini C. Blood flow velocity waveforms from fetal peripheral pulmonary arteries in pregnancies with preterm premature rupture of the membranes: relationship with pulmonary hypoplasia. Ultrasound Obstet Gynecol 2000; 15:98-103. [PMID: 10775989 DOI: 10.1046/j.1469-0705.2000.00006.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To measure fetal peripheral pulmonary artery velocity waveforms by Doppler ultrasonography in pregnancies complicated by premature rupture of membranes under 24 weeks' gestation and to relate the Doppler indices to the development of fetal pulmonary hypoplasia. DESIGN A prospective longitudinal study of fetal peripheral pulmonary artery velocity waveforms from premature rupture of membranes to delivery. SUBJECTS Twenty pregnancies complicated by premature rupture of membranes before 24 weeks of gestation and delivering after 26 weeks. METHODS Peripheral pulmonary artery velocity waveforms were recorded by Doppler technique at weekly intervals until delivery and Pulsatility Index (PI) calculated. Pregnancies were managed conservatively according to an institutional management protocol. Pulmonary hypoplasia was defined at autopsy by lung/body weight ratios and radial alveolar counts. Pulsatility Indices of fetuses developing pulmonary hypoplasia were compared with those with a normal lung development. RESULTS After premature rupture of membranes PI values were higher than normal reference limits for gestation, but no differences were found between the six fetuses which developed pulmonary hypoplasia and the remaining 14 fetuses with normal lung development. In this latter group PI values progressively decreased with advancing gestation (ANOVA for repeated measurements F = 11.61; P < or = 0.001), while they increased in fetuses developing pulmonary hypoplasia (F = 8.44; P < or = 0.001). As a consequence of these opposite trends significant differences in PI values were present between the two groups of fetuses from 2 weeks after the premature rupture of membranes. Two weeks after the premature rupture of membranes a PI value from the peripheral pulmonary arteries above the 95th centile had a sensitivity of 62.5%, specificity of 94.6%, positive predictive value of 83.3%, negative predictive value of 78.5% and relative risk of 3.88 (95th confidence interval 1.34-11.28) for the prediction of pulmonary hypoplasia. CONCLUSION The measurement of peripheral pulmonary velocity waveforms may help to establish the risk of developing pulmonary hypoplasia in pregnancies complicated by premature rupture of membranes.
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MESH Headings
- Adult
- Analysis of Variance
- Blood Flow Velocity
- Female
- Fetal Membranes, Premature Rupture/complications
- Fetal Membranes, Premature Rupture/diagnostic imaging
- Fetal Membranes, Premature Rupture/mortality
- Fetal Membranes, Premature Rupture/physiopathology
- Gestational Age
- Humans
- Lung/abnormalities
- Pregnancy
- Pregnancy Outcome
- Pregnancy Trimester, Second
- Prospective Studies
- Pulmonary Artery/physiopathology
- Pulsatile Flow
- Reproducibility of Results
- Risk Factors
- Sensitivity and Specificity
- Ultrasonography, Doppler, Color/methods
- Ultrasonography, Doppler, Pulsed/methods
- Ultrasonography, Prenatal/methods
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Affiliation(s)
- G Rizzo
- Department of Obstetrics and Gynecology, Università di Roma Tor Vergata, Italy
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Angelini E, Antonione C, Baricco M, Daolio S, Fabrizio M, Rosalbino F. Ni-Zr alloys: relationship between surface characteristics and electrocatalytic behavior. Rapid Commun Mass Spectrom 2000; 14:800-807. [PMID: 10825019 DOI: 10.1002/(sici)1097-0231(20000515)14:9<800::aid-rcm947>3.0.co;2-f] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A relationship between electrocatalytic activity for the hydrogen evolution reaction and the surface composition of the electrode was established for Ni-Zr crystalline and amorphous alloys by means of secondary ion mass spectrometry (SIMS). Electrocatalytic activity was tested by means of cathodic polarization in 1 M KOH at 25 degrees C and the resulting exchange current density has been taken as a measure of catalytic efficiency. Surface activation treatment involved chemical etching in HF solutions; the consequent morphological and compositional surface changes were studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical behavior of the pure elements (Ni and Zr) was also considered for comparison. All samples submitted to chemical etching in HF solutions showed an increase in electrocatalytic activity, particularly the alloy with the highest Ni content. The beneficial effect of chemical etching is due to dissolution of the zirconium oxide layer and to the formation of nanocrystalline Ni on the surfaces.
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Affiliation(s)
- E Angelini
- Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, Italy
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Angelini E, Cordano E, Kaciulis S, Mattogno G, Pandolfi L, Pinasco MR, Rosalbino F. XPS and electrochemical characterization of tarnish films on dental alloys. SURF INTERFACE ANAL 2000. [DOI: 10.1002/1096-9918(200008)30:1<50::aid-sia811>3.0.co;2-d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Taurine is a beta-aminosulfonic acid and is a ubiquitous amino acid whose role in the cochlea is not well established. In this study, its entry from blood into perilymph was investigated in the guinea pig as animal model. The penetration rate of [3H]taurine (molecular weight 125) into the perilymph of the scala vestibuli was measured 1 and 2 h after the intravenous infusion of [3H]taurine in nephrectomized animals. Results showed a rate of penetration in perilymph related to plasma at 36 +/- 4.7% (n = 5) after 1 h and 43 +/- 5.6% (n = 5) after 2 h. Compared to the penetration rate of urea (molecular weight 60) and mannitol (molecular weight 186) reported previously in rats, a passive entry of taurine into perilymph through the blood-perilymph barrier is suggested.
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Affiliation(s)
- E Angelini
- Laboratoire d'Audiologie Expérimentale et Clinique, CJF INSERM 97-04, Université Bordeaux II, France
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Rizzo G, Capponi A, Vlachopoulou A, Angelini E, Grassi C, Romanini C. Ultrasonographic assessment of the uterine cervix and interleukin-8 concentrations in cervical secretions predict intrauterine infection in patients with preterm labor and intact membranes. Ultrasound Obstet Gynecol 1998; 12:86-92. [PMID: 9744050 DOI: 10.1046/j.1469-0705.1998.12020086.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Interleukin-8 concentrations in cervical secretions have been related to microbial invasion of the amniotic cavity and histological chorioamnionitis. Since a short uterine cervix may be a risk factor for intrauterine infection, we set out to determine the interrelationship between cervical-secretion interleukin-8 concentration, cervical length measured by transvaginal sonography and intrauterine infection in women with preterm labor and intact membranes. DESIGN The study group comprised 144 pregnant women admitted to hospital for preterm labor and intact membranes. At admission, interleukin-8 in cervical secretions was assayed. The uterine cervix was evaluated by transvaginal sonography and the cervical index (funnel length + 1)/cervical length) was measured. In all cases, amniotic fluid was obtained by amniocentesis immediately after cervical examination and was cultured for aerobic and anaerobic bacteria including Ureaplasma ureolyticum and Mycoplasma hominis. Placentas were analyzed at delivery for the presence of histological chorioamnionitis. RESULTS Forty-three per cent (62/144) of pregnancies delivered preterm and 12.5% (18/144) of the amniotic fluid cultures were positive. Placentas were available from 54 pregnancies which delivered preterm and histological chorioamnionitis was found in 59.2% (32/54) of the cases. Interleukin-8 concentrations in cervical secretions were significantly higher in the presence of microbial invasion of the amniotic cavity (median 1191.5 ng/ml, range 812-5234 ng/ml vs. median 109 ng/ml, range 12-2231 ng/ml; p < or = 0.0001) and histological chorioamnionitis (median 982.5 ng/ml, range 430-5234 ng/ml vs. median 435 ng/ml, range 40-1750 ng/ml; p < or = 0.0001). Similarly, higher values for cervical index were obtained in the presence of a positive amniotic fluid culture (median 1.23, range 0.35-5.88 vs. median 0.29, range 0.024-4.85; p < or = 0.0001) or histological chorioamnionitis (median 1.18, range 0.043-5.88 vs. median 0.562, range 0.040-2.48; p = 0.011). Multiple logistic regression analysis indicates significant independent associations with a positive amniotic fluid culture and histological chorioamnionitis for the cervical interleukin-8 concentrations (amniotic fluid culture positive > or = 850, histological chorioamnionitis > or = 450) and for the cervical index (amniotic fluid culture positive < or = 0.58, histological chorioamnionitis < or = 0.56). CONCLUSIONS Intrauterine infection is associated with increased interleukin-8 concentrations in cervical secretions and a short cervix. Their combined analysis may reduce the indications for invasive procedures and improve the selection of women in preterm labor who may benefit from antimicrobial treatment.
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Affiliation(s)
- G Rizzo
- Department of Obstetrics and Gynecology, Universita' di Roma Tor Vergata, Italy
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43
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Rizzo G, Capponi A, Vlachopoulou A, Angelini E, Grassi C, Romanini C. Interleukin-6 concentrations in cervical secretions in the prediction of intrauterine infection in preterm premature rupture of the membranes. Gynecol Obstet Invest 1998; 46:91-5. [PMID: 9701687 DOI: 10.1159/000010009] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [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: 02/05/2023]
Abstract
The objective of this study was to determine the value of interleukin-6 (IL-6) in cervical secretion to diagnose microbial invasion of the amniotic cavity in patients with premature rupture of the membranes. Cervical secretions were sampled immediately before amniocentesis in 124 patients with singleton pregnancies and preterm premature rupture of the membranes. Gestational age ranged between 24 and 32 weeks. Amniotic fluid was cultured and IL-6 measured in amniotic fluid and cervical secretions. A total of 33.8% (21/124) of the amniotic fluid cultures had positive results. In cervical secretions the median concentration of IL-6 was 672 pg/ml (range 5-1,250) in the presence of intra-amniotic infection in contrast to 95.5 pg/ml (range 12-640) in women with negative amniotic fluid culture (p </=0.001). There were no differences between IL-6 concentrations in the cervical secretions of patients with or without obvious leakage of amniotic fluid. A significant relationship was found between IL-6 levels in amniotic fluid and in cervical secretions (rho = 0.74, p </=0.001). An IL-6 level in cervical secretions >200 pg/ml had a sensitivity of 78.5%, a specificity of 73.1% and a relative risk of 4.6 for intra-amniotic infection. Receiver-operator characteristics curve analysis showed that IL-6 assay in cervical secretions is comparable to IL-6 assay in amniotic fluid in predicting intra-amniotic infection (p = 0.468). In conclusion, intra-amniotic infection is associated with increased levels of IL-6 and concentrations in cervical secretions are related to amniotic levels. The measurement of IL-6 in cervical secretions may help to noninvasively identify intra-amniotic infection among pregnancies with preterm premature rupture of membranes.
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Affiliation(s)
- G Rizzo
- Fetal Medicine Center, Department of Obstetrics and Gynecology, Università di Roma 'Tor Vergata', Rome, Italy.
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Rizzo G, Capponi A, Angelini E, Vlachopoulou A, Grassi C, Romanini C. The value of transvaginal ultrasonographic examination of the uterine cervix in predicting preterm delivery in patients with preterm premature rupture of membranes. Ultrasound Obstet Gynecol 1998; 11:23-9. [PMID: 9511192 DOI: 10.1046/j.1469-0705.1998.11010023.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The objective of this study was to compare the value of ultrasonographic assessment of the uterine cervix and amniotic fluid tests in the prediction of the interval from admission to delivery in patients with preterm premature rupture of membranes. Ninety-two patients admitted to the hospital for preterm premature rupture of membranes between 24 and 32 weeks of gestation underwent both transabdominal amniocentesis and transvaginal ultrasonographic evaluation of the uterine cervix. Amniotic fluid analyses included cultures for aerobic and anaerobic bacteria, mycoplasmas and ureaplasmas, white blood cell count and glucose and interleukin-6 determinations. The ultrasonographic variables evaluated were cervical length, presence of funneling and cervical index ((funnel length + 1)/cervical length). The outcome measure was the interval from admission to delivery. The median interval from admission to delivery was 4.5 days (range 0-36). An abnormal uterine cervix was associated with a short time interval (cervical length < or = 20 mm, median 2 days, range 0-14 vs. median 6 days, range 0-36; p < or = 0.0001; presence of funneling, median 3 days, range 1-31 vs. median 8 days, range 0-36; p < or = 0.001; cervical index > 0.50, median 2 days, range 0-7 vs. median 8 days, range 1-36; p < or = 0.0001). However, interleukin-6 concentration in the amniotic fluid was the best predictor of the interval from admission to delivery when compared to the ultrasonographic indices and to all the amniotic variables considered. Moreover, when a multiple model was applied, the cervical index significantly and independently improved the performance of interleukin-6 in the prediction of the interval from admission to delivery. These data suggest that the combined use of the amniotic fluid interleukin-6 assay and the cervical index in patients with preterm premature rupture of membranes provides a good prediction of the interval from admission to delivery, thus identifying a subgroup of patients at high risk of imminent delivery.
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Affiliation(s)
- G Rizzo
- Department of Obstetrics and Gynecology, Università di Roma Tor Vergata, Rome, Italy
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45
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Rizzo G, Capponi A, Vlachopoulou A, Angelini E, Grassi C, Romanini C. The diagnostic value of interleukin-8 and fetal fibronectin concentrations in cervical secretions in patients with preterm labor and intact membranes. J Perinat Med 1997; 25:461-8. [PMID: 9494917 DOI: 10.1515/jpme.1997.25.6.461] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The objectives of this study were 1) to evaluate interleukin-8 concentrations in cervical secretions in predicting preterm delivery, microbial invasion of the amniotic cavity and histologic chorioamnionitis in patients with preterm labor and intact membranes and 2) to compare the diagnostic value of interleukin-8 with fetal fibronectin determinations in predicting preterm delivery, microbial invasion of the amniotic cavity and histologic chorioamnionitis in patients with preterm labor and intact membranes. Interleukin-8 and fetal fibronectin were assayed in cervical secretions in 106 patients with singleton pregnancies and intact membranes admitted for preterm labor. Amniotic fluid obtained by amniocentesis was cultured and placentas (No = 43) analyzed for the presence of chorioamnionitis. The prevalence of pregnancies delivered preterm was 46.2% (49/106) and 15.09% (16/106) of amniotic fluid cultures were positive. Interleukin-8 levels in cervical secretions were significantly increased in patients who delivered preterm (p < or = 0.0001), in presence of positive amniotic fluid culture (p = 0.0016) and histological chorioamnionitis (p = 0.008) than in patients with negative findings. Receiver-operator characteristics curve analysis showed that an interleukin-8 value > 450 pg/ml is comparable to that of a fetal fibronectin value > 50 ng/ml in predicting preterm delivery (p = 0.247). Among patients who delivered preterm interleukin-8 concentrations > 860 pg/ml predicted a positive amniotic fluid culture with a sensitivity of 81.2% and a specificity 66.6%. Further, in patients who delivered preterm and had a negative amniotic fluid culture, IL-8 concentrations > 480 pg/ml predicted histological chorioamnionitis with a sensitivity 78.5% and specificity 61.5%. A positive fetal fibronectin > 50 ng/ml was not predictve of either a positive amniotic fluid culture or the presence of histological chorioamnionitis. In conclusion, increased concentrations of interleukin-8 and fetal fibronectin are associated with impending delivery and their diagnostic value seems comparable. However, interleukin-8 concentrations identify patients at risk of a positive amniotic fluid culture and the presence of histological chorioamnionitis. Measurement of interleukin-8 in cervical secretion is a non-invasive method to identify patients at risk for both preterm delivery and intrauterine infection.
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Affiliation(s)
- G Rizzo
- Department of Obstetrics and Gynecology, University of Rome Tor Vergata, Italy
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46
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Solaini L, Bagioni P, Grandi U, Angelini E, Amigoni A. [Surgical treatment of chronic pericardial effusions. Personal experience]. MINERVA CHIR 1996; 51:1079-82. [PMID: 9064578] [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: 02/03/2023]
Abstract
The authors report their experience about 15 patients surgically treated for chronic large pericardial effusion; in 12 cases the etiology was malignant neoplasm, while in the other 3 cases was inflammatory disease. In 4 patients a simple subxiphoid pericardial drainage was carried out, while in the other cases a pericardial window was performed. These cases were managed using an anterior left thoracotomy in 8 patients and a videothoracoscopy in 3. The authors conclude that pericardial window with videothoracoscopic approach is the preferable procedure, but it cannot be used in every case because a lot of patients have seriously compromised conditions and the use of this technique can be hazardous.
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Affiliation(s)
- L Solaini
- I Divisione Chirurgia Generale, Ospedale S. Maria delle Croci-Ravenna
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Abstract
We give the first estimate of Young's modulus of the proteinaceous beam that makes the stiffness of the Deiters cell phalangeal processes. We show that the fundamental mode of vibration of an isolated phalanx is overdamped due to the damping imposed by the surrounding fluid. Then we consider the mechanical couplings that have so far been neglected in the micromechanics of the organ of Corti. Conclusions are drawn concerning the lack of significance of some expected resonant behaviour of isolated outer hair cells.
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Affiliation(s)
- E Laffon
- Service de Médecine Nucléaire, Centre Hospitalier de Bordeaux, Hôpital du Haut-Lévêque, Pessac, France
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48
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Galante E, Angelini E, Ferroni C, Scavina P, Bianchi S, Megale C, Costarelli L. Neuroendocrine Carcinoma of the Skin: A Case Report of “Multiple Neuroendocrine Carcinoma” Onset and Long-Term Remission after Chemotherapy. Tumori 1995; 81:148-50. [PMID: 7778220 DOI: 10.1177/030089169508100216] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We herein report a case of “multiple neuroendrocine carcinoma” onset, with a torpid course, metastasis in the left breast, and an initial considerable sensitivity to the chemotherapy. We conclude that a re-evaluation of the studies on this neoplasia carried out to date is needed, in order to identify new regimens, which increase the complete response rates and their duration.
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Affiliation(s)
- E Galante
- Divisione di Oncologia, Ospedale dell'Addolorata, USL Rm4, Rome, Italy
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Angelini E, Marinaro C, Carrozzo AM, Bianchi L, Delogu A, Giannello G, Nini G. Allergic contact dermatitis of the lip margins from para-tertiary-butylphenol in a lip liner. Contact Dermatitis 1993; 28:146-8. [PMID: 8462290 DOI: 10.1111/j.1600-0536.1993.tb03375.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [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: 01/30/2023]
Abstract
We describe the use of gas chromatography with mass spectrometry (GC-MS) in the investigation of a case of allergic contact dermatitis of the lip margins caused by a lip liner. Patch testing identified sensitization to para-tertiary-butylphenol-formaldehyde resin (PTBP-FR), a resin glue frequently used in leather work but rarely found in cosmetics. Investigation specified the para-tertiary-butylphenol (PTBP) component of the resin as the hapten responsible for the allergic contact dermatitis, as well as for associated depigmentation.
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Affiliation(s)
- E Angelini
- Istituto di Dermatologia e Venereologia, Università degli Studi di Roma Tor Vergata, Rome, Italy
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50
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Iavarone C, Felici A, Angelini E, Hadjiamiri H, Pulcini A, Messinetti S. [Incidental carcinoma of the prostate]. G Chir 1992; 13:427-8. [PMID: 1384637] [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: 12/26/2022]
Affiliation(s)
- C Iavarone
- Istituto di III Clinica Chirurgica Generale e Terapia Chirurgica, Università degli Studi La Sapienza, Roma
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