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Sabbatini M, Grossini E, Molinari C, Mary DASG, Vacca G, Cannas M. Retraction Note: Gastric distension causes changes in heart rate and arterial blood pressure by affecting the crosstalk between vagal and splanchnic systems in anesthetised rats. Exp Brain Res 2024:10.1007/s00221-024-06803-0. [PMID: 38355965 DOI: 10.1007/s00221-024-06803-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2024] [Indexed: 02/16/2024]
Affiliation(s)
- Maurizio Sabbatini
- Department of Science and Technology Innovation, University of Eastern Piedmont, UPO, T. Michel, 11, Alessandria, 15121, Italia.
| | - Elena Grossini
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - Claudio Molinari
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - David A S G Mary
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - Giovanni Vacca
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - Mario Cannas
- Department of Health Sciences, University of Eastern Piedmont, UPO, Novara, Italia
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Reale M, Chandra S, Buscarino G, Emanuele A, Cannas M, Ikkala O, Sciortino A, Messina F. Photoinduced charge separation in functional carbon-silver nanohybrids. Phys Chem Chem Phys 2022; 24:12974-12983. [PMID: 35582872 DOI: 10.1039/d2cp00668e] [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] [Indexed: 11/21/2022]
Abstract
In recent times, nanoscience is devoting growing interest to the easy assembly of well-established nanomaterials into hybrid nanostructures displaying new emerging features. Here, we study the photophysicochemical response of binary nanohybrids obtained by the spontaneous coupling of luminescent carbon dots to silver nanoparticles with controlled surface charge. Evidence of the successful coupling is obtained by steady-state and time resolved optical measurements and further confirmed by direct imaging. We demonstrate strong interactions within nanohybrids, which can be modelled in terms of a sub-picosecond electron transfer from photoexcited carbon dots to silver nanoparticles. Accordingly, newly designed nanohybrids display significant photocatalytic performance demonstrated by the photodegradation of methylene blue under ultraviolet-visible light. Our results provide an exhaustive picture of the optical response of these self-assembled carbon-silver nanohybrids and show their promise as a new class of eco-friendly materials for light-driven catalytic applications.
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Affiliation(s)
- M Reale
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - S Chandra
- Department of Applied Physics, Aalto University, P. O. Box 15100, Espoo, FI-00076, Finland
| | - G Buscarino
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. .,ATeN Center - Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy
| | - A Emanuele
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - M Cannas
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy.
| | - O Ikkala
- Department of Applied Physics, Aalto University, P. O. Box 15100, Espoo, FI-00076, Finland
| | - A Sciortino
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. .,ATeN Center - Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy
| | - F Messina
- Dipartimento di Fisica e Chimica - Emilio Segrè, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy. .,ATeN Center - Università degli Studi di Palermo, Viale delle Scienze, Edificio 18, 90128 Palermo, Italy
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3
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De Caro R, Boscolo-Berto R, Artico M, Bertelli E, Cannas M, Cappello F, Carpino G, Castorina S, Cataldi A, Cavaletti GA, Cinti S, Cocco LI, Cremona O, Crivellato E, De Luca A, Falconi M, Familiari G, Ferri GL, Fornai F, Gesi M, Geuna S, Gibelli DM, Giordano A, Gobbi P, Guerra G, Gulisano M, Macchi V, Macchiarelli G, Manzoli L, Michetti F, Miscia S, Montagnani S, Montella ACM, Morini S, Onori P, Palumbo C, Papa M, Porzionato A, Quacci DE, Raspanti M, Rende M, Rezzani R, Ribatti D, Ripani M, Rodella LF, Rossi P, Sbarbati A, Secchiero P, Sforza C, Stecco C, Toni R, Vercelli A, Vitale M, Zancanaro C, Zauli G, Zecchi S, Anastasi GP, Gaudio E. The Italian law on body donation: A position paper of the Italian College of Anatomists. Ann Anat 2021; 238:151761. [PMID: 34139280 DOI: 10.1016/j.aanat.2021.151761] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 12/18/2020] [Revised: 01/29/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
In Italy, recent legislation (Law No. 10/2020) has tuned regulations concerning the donation of one's postmortem body and tissues for study, training, and scientific research purposes. This study discusses several specific issues to optimise the applicability and effectiveness of such an important, novel regulatory setting. Critical issues arise concerning the learners, the type of training and teaching activities that can be planned, the position of academic anatomy institutes, the role of family members in the donation process, the time frame of the donation process, the eligibility of partial donation, or the simultaneous donation of organs and tissues to patients awaiting transplantation. In particular, a universal time limit for donations (i.e., one year) makes it impossible to plan the long-term use of specific body parts, which could be effectively preserved for the advanced teaching and training of medical students and surgeons. The abovementioned conditions lead to the limited use of corpses, thus resulting in the inefficiency of the whole system of body donation. Overall, the donors' scope for the donation of their body could be best honoured by a more flexible and tuneable approach that can be used on a case-by-case basis. Furthermore, it is deemed necessary to closely monitor the events scheduled for corpses in public nonacademic institutions or private enterprises. This paper presents useful insights from Italian anatomists with the hope of providing inspiration for drafting the regulations. In conclusion, this paper focuses on the critical issues derived from the recently introduced Italian law on the donation and use of the body after death and provides suggestions to lawmakers for future implementations.
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Affiliation(s)
- Raffaele De Caro
- Department of Neurosciences, Institute of Human Anatomy, University of Padua, Padua, Italy.
| | - Rafael Boscolo-Berto
- Department of Neurosciences, Institute of Human Anatomy, University of Padua, Padua, Italy.
| | - Marco Artico
- Department of Sensory Organs, "Sapienza" University of Rome, Rome, Italy
| | - Eugenio Bertelli
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Mario Cannas
- Department of Health Sciences, Laboratory of Human Anatomy, University of Piemonte Orientale, Novara, Italy
| | - Francesco Cappello
- Department of Biomedicine and Neurosciences and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Guido Carpino
- Department of Movement, Human and Health Sciences, Division of Health Sciences, University of Rome "Foro Italico", Rome, Italy
| | - Sergio Castorina
- Department of Biomedical and Technological Sciences, Section of Human Anatomy and Histology, University of Catania, Catania, Italy
| | - Amelia Cataldi
- Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Guido Angelo Cavaletti
- School of Medicine and Surgery, Experimental Neurology Unit, University of Milano-Bicocca, Monza, Italy
| | - Saverio Cinti
- Department of Experimental and Clinical Medicine, Center of Obesity, Marche Polytechnic University, Ancona, Italy
| | | | - Ottavio Cremona
- Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy
| | - Enrico Crivellato
- Department of Medicine, Section of Human Anatomy, University of Udine, Udine, Italy
| | - Antonio De Luca
- Department of Mental and Physical Health and Preventive Medicine, Section of Human Anatomy, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Mirella Falconi
- Department of Biomedical and Neuromotor Sciences, University di Bologna, Bologna, Italy
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Gian Luca Ferri
- Department of Biomedical Sciences, NEF-Laboratory, University of Cagliari, Cagliari, Italy
| | - Francesco Fornai
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Marco Gesi
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
| | - Stefano Geuna
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | | | - Antonio Giordano
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Pietro Gobbi
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Germano Guerra
- Department of Medicine and Health Sciences "Vincenzo Tiberio", University of Molise, Campobasso, Italy
| | - Massimo Gulisano
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, Florence, Italy
| | - Veronica Macchi
- Department of Neurosciences, Institute of Human Anatomy, University of Padua, Padua, Italy
| | - Guido Macchiarelli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Lucia Manzoli
- Department of Biomedical and Neuromotor Sciences, University di Bologna, Bologna, Italy
| | - Fabrizio Michetti
- Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Sebastiano Miscia
- Department of Medicine and Aging Sciences, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Stefania Montagnani
- Department of Public Health, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | | | - Sergio Morini
- Laboratory of Microscopical and Ultrastructural Anatomy, "Campus Bio-Medico di Roma" University, Rome, Italy
| | - Paolo Onori
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Carla Palumbo
- Department of Biomedical, Metabolic and Neural Sciences, Section of Human Morphology, University of Modena and Reggio Emilia, Modena, Italy
| | - Michele Papa
- Department of Mental and Physical Health and Preventive Medicine, Section of Human Anatomy, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Andrea Porzionato
- Department of Neurosciences, Institute of Human Anatomy, University of Padua, Padua, Italy
| | | | - Mario Raspanti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Mario Rende
- Department of Surgery and Biomedical Sciences, Section of Human, Clinical and Forensic Anatomy, University of Perugia, Perugia, Italy
| | - Rita Rezzani
- Department of Clinical and Experimental Sciences, Anatomy and Physiopathology Division, University of Brescia, Brescia, Italy
| | - Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Bari, Italy
| | - Maurizio Ripani
- Department of Movement, Human and Health Sciences, Division of Health Sciences, University of Rome "Foro Italico", Rome, Italy
| | - Luigi Fabrizio Rodella
- Department of Clinical and Experimental Sciences, Anatomy and Physiopathology Division, University of Brescia, Brescia, Italy
| | - Pellegrino Rossi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - Andrea Sbarbati
- Department of Neurosciences, Biomedicine and Movement Sciences, Anatomy and Histology Section, University of Verona, Verona, Italy
| | - Paola Secchiero
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Chiarella Sforza
- Department of Biomedical Science for Health, University of Milan, Milan, Italy
| | - Carla Stecco
- Department of Neurosciences, Institute of Human Anatomy, University of Padua, Padua, Italy
| | - Roberto Toni
- Department of Medicine and Surgery, Section of Human Anatomy, University of Parma, Parma, Italy
| | - Alessandro Vercelli
- Department of Neuroscience Rita Levi Montalcini, University of Turin, Turin, Italy
| | - Marco Vitale
- Department of Medicine and Surgery, Section of Human Anatomy, University of Parma, Parma, Italy
| | - Carlo Zancanaro
- Department of Neurosciences, Biomedicine and Movement Sciences, Anatomy and Histology Section, University of Verona, Verona, Italy
| | - Giorgio Zauli
- Department of Morphology, Surgery and Experimental Medicine and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Sandra Zecchi
- Department of Experimental and Clinical Medicine, Anatomy and Histology Section, University of Florence, Florence, Italy
| | - Giuseppe Pio Anastasi
- Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
| | - Eugenio Gaudio
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
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Sabbatini M, Faruggio S, Verna G, Magnelli V, Dondero F, Boldorini R, Cannas M, Grossini E. Processing Adipose Tissue to Make it More Stable When Used for Refilling: A Morphologic and Immunohistochemistry Evaluation. Inquiry 2021; 58:469580211061030. [PMID: 34894844 PMCID: PMC8679401 DOI: 10.1177/00469580211061030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Breast reconstruction has gained from lipofilling the possibility to recover the aesthetic outcome of anatomical profile in a more natural appearance. However, until today, the long-term graft survival remains unpredictable, and sometimes it does not guarantee a well-adequate aesthetic result. In the present work, the morphological changes, occurring in fat mass used for refilling, harvested by the Coleman's procedure or through the washing/fragmenting procedure were analysed. Adipocyte size; immunohistochemistry against CD8, CD31, CD68 and M2-type macrophages and catalase enzyme, were analysed in vitro on fat mass cultured for 4 weeks. Our observation reveals an increase of connective tissue around the mass and a high number of immune cells occurrence in fat mass harvested by the Coleman's procedure. Instead, the washing/fragmented procedure would reduce the number of immune cells within the fat mass, increase the size of adipocytes, and cause a wider presence of active vessels profile and greater catalase expression. We hypothesize that the fat mass processed by the Coleman's procedure would remain more reactive due to a higher number of immune and macrophages cells, prone to develop cystic formation, leading to a suboptimal integration in the recipient site. On the other hand, the conditions more prone to realize an optimal integration would occur in the fat mass processed by the washing/fragmenting procedure: a reduced number of immune cells, low amount of connective tissue, presence of larger adipocytes. Follow-up monitoring did support our conclusion, as we observed a reduction of re-intervention for refilling procedure in patients treated with the washing/fragmenting procedure.
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Affiliation(s)
- Maurizio Sabbatini
- Department of Science and
Technology Innovation, UPO University, Alessandria, Italy
| | - Serena Faruggio
- Department of Translational
Medicine, UPO University, Novara, Italy
| | - Giovanni Verna
- Department of Plastic and
Reconstructive Surgery, Hospital “Maggiore Della
Carità,” Novara, Italy
| | - Valeria Magnelli
- Department of Science and
Technology Innovation, UPO University, Alessandria, Italy
| | - Francesco Dondero
- Department of Science and
Technology Innovation, UPO University, Alessandria, Italy
| | - Renzo Boldorini
- Department of Health Science,
Section of Pathological Anatomy, UPO University, Novara, Italy
| | - Mario Cannas
- Department of Health Sciences, UPO University, Novara, Italy
| | - Elena Grossini
- Department of Translational
Medicine, UPO University, Novara, Italy
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Longo AV, Sciortino A, Cannas M, Messina F. UV photobleaching of carbon nanodots investigated by in situ optical methods. Phys Chem Chem Phys 2020; 22:13398-13407. [DOI: 10.1039/d0cp00952k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
In situ optical analysis of photobleaching unveils the real nature and evolution of emitters in a carbon-dot system.
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Affiliation(s)
- A. V. Longo
- Dipartimento di Fisica e Chimica “Emilio Segré”
- Università degli Studi di Palermo
- Via Archirafi 36
- Palermo
- Italy
| | - A. Sciortino
- Dipartimento di Fisica e Chimica “Emilio Segré”
- Università degli Studi di Palermo
- Via Archirafi 36
- Palermo
- Italy
| | - M. Cannas
- Dipartimento di Fisica e Chimica “Emilio Segré”
- Università degli Studi di Palermo
- Via Archirafi 36
- Palermo
- Italy
| | - F. Messina
- Dipartimento di Fisica e Chimica “Emilio Segré”
- Università degli Studi di Palermo
- Via Archirafi 36
- Palermo
- Italy
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Ramella M, Bernardi P, Fusaro L, Manfredi M, Casella F, Porta CM, Nicolai L, Galeazzi E, Boldorini R, Settembrini AM, Settembrini P, Marengo E, Cannas M, Boccafoschi F. Relevance of inflammation and matrix remodeling in abdominal aortic aneurysm (AAA) and popliteal artery aneurysm (PAA) progression. Am J Transl Res 2018; 10:3265-3275. [PMID: 30416667 PMCID: PMC6220226] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/17/2018] [Indexed: 06/09/2023]
Abstract
Aneurysm is a multifactorial degenerative disease characterized by focal dilatation of blood vessels. Although abdominal aortic (AAA) and popliteal aneurysms (PAA) are the most common dilatative vascular diseases and share some features, a comparison between the different anatomical sites and the relative pathophysiological differences has not been established. In order to gain deeper insights to AAA and PAA, we have characterized the role of matrix remodelling, vascular cells phenotype depletion and the inflammatory process in both diseases. Results show a more extensive presence of T-cell, B-cell and monocyte-macrophage infiltration in AAA with respect to PAA. Concurring with this aspect, IL-6, IL-8 and MCP-1 are 10-fold increased in AAA. Moreover, MMP-9, and metalloproteinase inhibitor 3 (TIMP3) resulted up-regulated in AAA tissues. Regarding the catalytic activity, which is tightly related to the oxidative stress, we found an up-regulation of superoxide dismutase [Mn] mitochondrial (SODM), glutathione peroxidase 3 (GPX3) and peroxiredoxin-1 (PRDX1). Histological analyses clearly showed a massive elastin fragmentation in AAA. This may enhance the inflammatory response, which has a prevalent role in AAA, while PAA is mainly guided by a loss of the contractile phenotype. These findings suggest insight in these potentially devastating diseases in term of their progression, aiming to identify potential specific markers respectively for AAA and PAA treatment.
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Affiliation(s)
- Martina Ramella
- Department of Health Science, University of Piemonte Orientale (UPO)Novara, Italy
| | - Priscilla Bernardi
- Department of Health Science, University of Piemonte Orientale (UPO)Novara, Italy
| | - Luca Fusaro
- Department of Health Science, University of Piemonte Orientale (UPO)Novara, Italy
| | - Marcello Manfredi
- Department of Sciences and Technological Innovation, University of Piemonte Orientale (UPO)Alessandria, Italy
- ISALIT, Spin-Off of DISIT, University of Piemonte Orientale (UPO)Alessandria, Italy
| | - Francesco Casella
- Department of Vascular Surgery, Ospedale Maggiore Della CaritàNovara, Italy
| | - Carla M Porta
- Department of Vascular Surgery, Ospedale Maggiore Della CaritàNovara, Italy
| | - Laura Nicolai
- Department of Vascular Surgery, Ospedale Ca’ FoncelloTreviso, Italy
| | - Edoardo Galeazzi
- Department of Vascular Surgery, Ospedale Ca’ FoncelloTreviso, Italy
| | - Renzo Boldorini
- Department of Health Science, University of Piemonte Orientale (UPO)Novara, Italy
| | | | | | - Emilio Marengo
- Department of Sciences and Technological Innovation, University of Piemonte Orientale (UPO)Alessandria, Italy
| | - Mario Cannas
- Department of Health Science, University of Piemonte Orientale (UPO)Novara, Italy
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Ramella M, Boccafoschi F, Bellofatto K, MD AF, Fusaro L, Boldorini R, Casella F, Porta C, Settembrini P, Cannas M. Endothelial MMP-9 drives the inflammatory response in abdominal aortic aneurysm (AAA). Am J Transl Res 2017; 9:5485-5495. [PMID: 29312500 PMCID: PMC5752898] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 10/15/2017] [Indexed: 06/07/2023]
Abstract
Progression of abdominal aortic aneurysm (AAA) is typified by chronic inflammation and extracellular matrix (ECM) degradation of the aortic wall. Vascular inflammation involves complex interactions among inflammatory cells, endothelial cells (ECs), vascular smooth muscle cells (vSMCs), and ECM. Although vascular endothelium and medial neoangiogenesis play a key role in AAA, the molecular mechanisms underlying their involvement are only partially understood. In AAA biopsies, we found increased MMP-9, IL-6, and monocyte chemoattractant protein-1 (MCP-1), which correlated with massive medial neo-angiogenesis (C4d positive staining). In this study, we developed an in vitro model in order to characterize the role of endothelial matrix metalloproteinase-9 (e-MMP-9) as a potential trigger of medial disruption and in the inflammatory response bridging between ECs and vSMC. Lentiviral-mediated silencing of e-MMP-9 through RNA interference inhibited TNF-alpha-mediated activation of NF-κB in EA.hy926 human endothelial cells. In addition, EA.hy926 cells void of MMP-9 failed to migrate in a 3D matrix. Moreover, silenced EA.hy926 affected vSMC behavior in terms of matrix remodeling. In fact, also MMP-9 in vSMC resulted inhibited when endothelial MMP-9 was suppressed.
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Affiliation(s)
- Martina Ramella
- Department of Health Sciences, Università del Piemonte Orientale (UPO)Novara, Italy
| | | | - Kevin Bellofatto
- Department of Health Sciences, Università del Piemonte Orientale (UPO)Novara, Italy
| | - Antonia Follenzi MD
- Department of Health Sciences, Università del Piemonte Orientale (UPO)Novara, Italy
| | - Luca Fusaro
- Department of Health Sciences, Università del Piemonte Orientale (UPO)Novara, Italy
| | - Renzo Boldorini
- Department of Health Sciences, Università del Piemonte Orientale (UPO)Novara, Italy
| | - Francesco Casella
- Department of Vascular Surgery, Ospedale Maggiore della CaritàNovara, Italy
| | - Carla Porta
- Department of Vascular Surgery, Ospedale Maggiore della CaritàNovara, Italy
| | | | - Mario Cannas
- Department of Health Sciences, Università del Piemonte Orientale (UPO)Novara, Italy
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Leigheb M, Bosetti M, De Consoli A, Borrone A, Cannas M, Grassi F. Chondral tissue engineering of the reumatoid knee with collagen matrix autologous chondrocytes implant. Acta Biomed 2017. [PMID: 29083361 PMCID: PMC6357659 DOI: 10.23750/abm.v88i4-s.6801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Articular cartilage repair is still a challenge. To date evidence is insufficient to support a treatment over the others. Inflammatory conditions in the joint hamper the application of tissue engineering during chronic joint diseases. Most of the Matrix Autologous Chondrocyte Implantation (MACI) cases reported in literature do not deal with rheumatoid knees and do not have a long clinical-histologic follow-up. We report about a 46-year old woman who suffered of a painful focal Outerbridge 4th degree chondral lesion in the medial femoral condyle of her left rheumatoid knee. The tissue defect was filled by a Cartilage Regeneration System (CaReS®) based on a type I collagen matrix seeded by autologous in vitro expanded chondrocytes. The patient was followed up to ten years clinically and by MRI, and finally treated with a Total Knee Replacement for the increasing arthritis. Histologically, the explanted MACI tissue showed an increased cellularity with an extracellular matrix rich of collagen and glycosaminoglicanes even though the overall architecture was different from the normal cartilage pattern. The case reported suggests that the main goal of treatment for chondropathy is the long lasting control of symptoms, while permanent restoration of normal anatomy is still impossible. Mesenchymal stem cells, that develop into joint tissues, show immunosuppressive and anti-inflammatory qualities, in vitro and in vivo, indicating a potential role for tissue engineering approaches in the treatment of rheumatic diseases. (www.actabiomedica.it)
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Leigheb M, Sabbatini M, Baldrighi M, Hasenboehler EA, Briacca L, Grassi F, Cannas M, Avanzi G, Castello LM. Prospective analysis of pain and pain management in an emergency department. Acta Biomed 2017; 88:19-30. [PMID: 29083349 DOI: 10.23750/abm.v88i4 -s.6790] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/03/2017] [Indexed: 11/23/2022]
Abstract
. BACKGROUND AND AIM OF THE WORK The aim of pain management in the Emergency Department (ED) is to temporarily optimize patient quality of life by reducing acute discomfort. The goals of this study were to evaluate the intensity and location of pain experienced by patients in the ED, the time to analgesia administration in the ED, and the patient's satisfaction so to identify potential useful interventions to improve pain management. METHODS We prospectively collected data on the intensity of pain experienced by 137 patients during their ED stays using the Visual Analog Scale (VAS) and the Numeric Rating Scale (NRS). Patients were further stratified by pain intensity according to three categories, and by cause of pain. RESULTS NRS pain measurements were higher than VAS measurements. Patients who took pain medication within a few hours before their ED visit had a higher mean VAS score at arrival in comparison to patients who did not. Patients treated with pain medications, compared to the non-treated, had more pain at arrival; abdominal pain was treated earlier than non-abdominal pain, whereas no difference in timing of medication administration was noted between traumatic and non-traumatic pain. Among the hospitalized patients, the chest was the most common location of pain; these patients had lower NRS scores than non-hospitalized patients. Patients with mild to moderate pain were more satisfied then those with severe pain. CONCLUSIONS The discrepancy between NRS and VAS scores suggests that pain intensity cannot be determined accurately according to pain scale data alone but should also incorporate clinical judgment.
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10
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Leigheb M, Bosetti M, De Consoli A, Borrone A, Cannas M, Grassi F. Chondral tissue engineering of the reumatoid knee with collagen matrix autologous chondrocytes implant. Acta Biomed 2017; 88:107-113. [PMID: 29083361 DOI: 10.23750/abm.v88i4 -s.6801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/03/2017] [Indexed: 11/23/2022]
Abstract
Articular cartilage repair is still a challenge. To date evidence is insufficient to support a treatment over the others. Inflammatory conditions in the joint hamper the application of tissue engineering during chronic joint diseases. Most of the Matrix Autologous Chondrocyte Implantation (MACI) cases reported in literature do not deal with rheumatoid knees and do not have a long clinical-histologic follow-up. We report about a 46-year old woman who suffered of a painful focal Outerbridge 4th degree chondral lesion in the medial femoral condyle of her left rheumatoid knee. The tissue defect was filled by a Cartilage Regeneration System (CaReS®) based on a type I collagen matrix seeded by autologous in vitro expanded chondrocytes. The patient was followed up to ten years clinically and by MRI, and finally treated with a Total Knee Replacement for the increasing arthritis. Histologically, the explanted MACI tissue showed an increased cellularity with an extracellular matrix rich of collagen and glycosaminoglicanes even though the overall architecture was different from the normal cartilage pattern. The case reported suggests that the main goal of treatment for chondropathy is the long lasting control of symptoms, while permanent restoration of normal anatomy is still impossible. Mesenchymal stem cells, that develop into joint tissues, show immunosuppressive and anti-inflammatory qualities, in vitro and in vivo, indicating a potential role for tissue engineering approaches in the treatment of rheumatic diseases.
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11
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Caimmi PP, Sabbatini M, Fusaro L, Cannas M. Politetrafluorene suture used as artificial mitral chord: mechanical properties and surgical implications. J Cardiovasc Surg (Torino) 2017; 58:895-903. [PMID: 28920636 DOI: 10.23736/s0021-9509.17.10065-0] [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: 11/08/2022]
Abstract
BACKGROUND Novel surgical approach to repair degenerative mitral regurgitation such as transapical chordae tendineae replacement and "loop in loop" in loop techniques, need of artificial chordae longer than that used in the older techniques of chordae tendineae replacement. This difference in length has been reported as potential critical point for durability of artificial chordae. In the present paper we have investigated the elastic behavior of different diameter and length politetrafluorene (PTFE) suture threads as substitute of native chordae, to identify their reliability to use as long artificial chordae. METHODS PTFE suture threads with different diameters were investigated in their mechanical properties at different length from 2 to 14 cm, by a servo hydraulic testing machine, to test the elastic properties of the sample in their use as mitral chordae substitutes. RESULTS Our study shows that the chordae length is an important parameter that can change the performance of chordae itself. The analysis of elastic/properties of suture threads specimen, reveals that long PTFE chords have an optimal mechanical behavior in which elongation is accompanied by a safe elastic properties that make them well resistance during multiple tractions. CONCLUSIONS In conclusion the use of PTFE as an artificial chordae may represent a valid choice in case of insertion of artificial chordae with extra anatomic length.
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Affiliation(s)
- Philippe P Caimmi
- Department of Cardiac Surgery, Maggiore della Carità Hospital, Novara, Italy.,Department of Healthcare Quality and R&I, Maggiore della Carità Hospital, Novara, Italy
| | - Maurizio Sabbatini
- Department of Science and Innovation Technology, University Eastern Piedmont, UPO, Alessandria, Italy -
| | - Luca Fusaro
- Department of Health Sciences, University Eastern Piedmont, UPO, Novara, Italy
| | - Mario Cannas
- Department of Health Sciences, University Eastern Piedmont, UPO, Novara, Italy
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12
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Cannas M, Conversano C, Mola F, Sironi E. Variation in caesarean delivery rates across hospitals: a Bayesian semi-parametric approach. J Appl Stat 2017. [DOI: 10.1080/02664763.2016.1247785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- M. Cannas
- Department of Business and Economics Science, University of Cagliari, Cagliari, Italy
| | - C. Conversano
- Department of Mathematics and Informatics Science, University of Cagliari, Cagliari, Italy
| | - F. Mola
- Department of Business and Economics Science, University of Cagliari, Cagliari, Italy
| | - E. Sironi
- Department of Statistical Sciences, Catholic University, Milan, Italy
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13
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Sciortino A, Madonia A, Gazzetto M, Sciortino L, Rohwer EJ, Feurer T, Gelardi FM, Cannas M, Cannizzo A, Messina F. The interaction of photoexcited carbon nanodots with metal ions disclosed down to the femtosecond scale. Nanoscale 2017; 9:11902-11911. [PMID: 28660936 DOI: 10.1039/c7nr03754f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Fluorescent carbon nanodots are a novel family of carbon-based nanoscale materials endowed with an outstanding combination of properties that make them very appealing for applications in nanosensing, photonics, solar energy harvesting and photocatalysis. One of the remarkable properties of carbon dots is their strong sensitivity to the local environment, especially to metal ions in solution. These interactions provide a testing ground for their marked photochemical properties, highlighted by many studies, and frequently driven by charge transfer events. Here we combine several optical techniques, down to femtosecond time resolution, to understand the interplay between carbon nanodots and aqueous metal ions such as Cu2+ and Zn2+. We find that copper inhibits the fluorescence of carbon dots through static and diffusional quenching mechanisms, and our measurements allow discriminating between the two. Ultrafast optical methods are then used to address the dynamics of copper-dot complexes, wherein static quenching takes place, and unveil the underlying complexity of their photocycle. We propose an initial increase of electronic charge on the surface of the dot, upon photo-excitation, followed by a partial electron transfer to the nearby ion, with 0.2 ps and 1.9 ps time constants, and finally a very fast (≪1 ps) non-radiative electron-hole recombination which brings the system back to the ground state. Notably, we find that the electron transfer stage is governed by an ultrafast water rearrangement around photo-excited dots, pointing out the key role of solvent interactions in the photo-physics of these systems.
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Affiliation(s)
- A Sciortino
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy
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14
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Rizzolo S, Périsse J, Boukenter A, Ouerdane Y, Marin E, Macé JR, Cannas M, Girard S. Real time monitoring of water level and temperature in storage fuel pools through optical fibre sensors. Sci Rep 2017; 7:8766. [PMID: 28821768 PMCID: PMC5562826 DOI: 10.1038/s41598-017-08853-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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: 01/18/2017] [Accepted: 07/18/2017] [Indexed: 12/01/2022] Open
Abstract
We present an innovative architecture of a Rayleigh-based optical fibre sensor for the monitoring of water level and temperature inside storage nuclear fuel pools. This sensor, able to withstand the harsh constraints encountered under accidental conditions such as those pointed-out during the Fukushima-Daiichi event (temperature up to 100 °C and radiation dose level up to ~20 kGy), exploits the Optical Frequency Domain Reflectometry technique to remotely monitor a radiation resistant silica-based optical fibre i.e. its sensing probe. We validate the efficiency and the robustness of water level measurements, which are extrapolated from the temperature profile along the fibre length, in a dedicated test bench allowing the simulation of the environmental operating and accidental conditions. The conceived prototype ensures an easy, practical and no invasive integration into existing nuclear facilities. The obtained results represent a significant breakthrough and comfort the ability of the developed system to overcome both operating and accidental constraints providing the distributed profiles of the water level (0–to–5 m) and temperature (20–to–100 °C) with a resolution that in accidental condition is better than 3 cm and of ~0.5 °C respectively. These new sensors will be able, as safeguards, to contribute and reinforce the safety in existing and future nuclear power plants.
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Affiliation(s)
- S Rizzolo
- Laboratoire Hubert Curien, UMR-CNRS 5516, 42000, Saint-Etienne, France.,Areva NP, 69006, Lyon, France.,Dipartimento di Fisica e Chimica, Università di Palermo, 90128, Palermo, Italy
| | | | - A Boukenter
- Laboratoire Hubert Curien, UMR-CNRS 5516, 42000, Saint-Etienne, France
| | - Y Ouerdane
- Laboratoire Hubert Curien, UMR-CNRS 5516, 42000, Saint-Etienne, France
| | - E Marin
- Laboratoire Hubert Curien, UMR-CNRS 5516, 42000, Saint-Etienne, France
| | | | - M Cannas
- Dipartimento di Fisica e Chimica, Università di Palermo, 90128, Palermo, Italy
| | - S Girard
- Laboratoire Hubert Curien, UMR-CNRS 5516, 42000, Saint-Etienne, France.
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15
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Abstract
With the aim to obtain an injectable bioactive scaffold that can accelerate bone formation in sinus lift augmentation, in bony void and fracture repair, we have developed a three-dimensional (3D) jelly collagen containing lysophosphatidic acid (LPA) and 1α,25-dihydroxyvitamin D3 (1,25D3). Using an in vitro 3D culture model of bone fracture, we show that the contraction of the collagen gel is mediated by Rho-kinase activation in osteoblasts. The gel contraction showed dependence on cell concentration and was increased by LPA, which favored apposition and fastening of bone fragments approach. LPA was shown to act through actin cytoskeleton reorganization and myosin light chain phosphorylation of human primary osteoblasts (hOB). Moreover, LPA conferred osteoconductive properties as evidenced by the induction of proliferation, differentiation, and migration of hOB. The addition of 1,25D3 did not enhance cell-mediated gel contraction, but stimulated the maturation of hOB in vitro through the production of extracellular matrix of higher quality. On the basis of these observations, the collagen gel enriched with LPA and 1,25D3 described herein can be considered an injectable natural scaffold that allows the migration of cells from the side of bone defect and a promising candidate to accelerate bone growth and fracture healing.
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Affiliation(s)
- Michela Bosetti
- 1 Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Novara, Italy
| | - Alessia Borrone
- 1 Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale , Novara, Italy
| | - Massimiliano Leigheb
- 2 Department of Orthopaedics and Traumatology, Azienda Ospedaliero-Universitaria Maggiore della Carità , Novara, Italy
| | - V Prasad Shastri
- 3 Institute for Macromolecular Chemistry, University of Freiburg , Freiburg, Germany
| | - Mario Cannas
- 4 Dipartimento di Scienze della Salute, Università del Piemonte Orientale , Novara, Italy
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16
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Sabbatini M, Grossini E, Molinari C, Mary DASG, Vacca G, Cannas M. Gastric distension causes changes in heart rate and arterial blood pressure by affecting the crosstalk between vagal and splanchnic systems in anesthetised rats. Exp Brain Res 2017; 235:1081-1095. [PMID: 28091707 DOI: 10.1007/s00221-016-4819-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 11/01/2016] [Indexed: 12/31/2022]
Abstract
Various hindbrain nuclei have been demonstrated to be involved in the control of the cardiovascular reflexes elicited by both non-noxious and noxious gastric distension, through parasympathetic and sympathetic activation. The different role played by the branches of autonomic nervous system in exerting these effects and their crosstalk in relation to low-/high-pressure distension rate has not been examined yet. Therefore, in the present work, monolateral and bilateral vagotomy and splanchnicotomy were performed in anesthetised rats to analyse the involvement of hindbrain nuclei in haemodynamic changes caused by gastric distension at high (80 mmHg) and low (15 mmHg) pressure. The analysis of c-Fos expression in neuronal areas involved in cardiovascular control allowed us to examine their recruitment in response to various patterns of gastric distension and the crosstalk between vagal and splanchnic systems. The results obtained show that the low-pressure (non-noxious) gastric distension increases both heart rate and arterial blood pressure. In addition, the vagus nerve and hindbrain nuclei, such as nucleus ambiguous, ventrolateral medulla and lateral reticular nucleus, appear to be primarily involved in observed responses. In particular, we have found that although vagus nerve plays a central role in exerting those cardiovascular reflex changes at low gastric distension, for its functional expression an intact splanchnic system is mandatory. Hence, the absence of splanchnic input attenuates pressor responses or turns them into depressor responses. Instead at high-pressure (noxious) gastric distension, the splanchnic nerve represents the primary component in regulating the reflex cardiovascular effects.
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Affiliation(s)
- Maurizio Sabbatini
- Department of Science and Technology Innovation, University of Eastern Piedmont, UPO, T. Michel, 11, Alessandria, 15121, Italia.
| | - Elena Grossini
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - Claudio Molinari
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - David A S G Mary
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - Giovanni Vacca
- Department of Translational Medicine, University of Eastern Piedmont, UPO, Novara, Italia
| | - Mario Cannas
- Department of Health Sciences, University of Eastern Piedmont, UPO, Novara, Italia
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17
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Sciortino A, Cayuela A, Soriano ML, Gelardi FM, Cannas M, Valcárcel M, Messina F. Different natures of surface electronic transitions of carbon nanoparticles. Phys Chem Chem Phys 2017; 19:22670-22677. [DOI: 10.1039/c7cp04548d] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pictorial representation of the fluorescence mechanisms proposed for carbon nanodots. Blue: tunable visible emission from surface-delocalized electronic states. Violet: UV emission from localized, quasi-molecular chromophores.
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Affiliation(s)
- A. Sciortino
- Dipartimento di Fisica e Chimica
- Università degli Studi di Palermo
- 90123 Palermo
- Italy
- Dipartimento di Fisica e Astronomia
| | - A. Cayuela
- Department of Analytical Chemistry
- Institute of Fine Chemistry and Nanochemistry
- 14071 Córdoba
- Spain
| | - M. L. Soriano
- Department of Analytical Chemistry
- Institute of Fine Chemistry and Nanochemistry
- 14071 Córdoba
- Spain
| | - F. M. Gelardi
- Dipartimento di Fisica e Chimica
- Università degli Studi di Palermo
- 90123 Palermo
- Italy
| | - M. Cannas
- Dipartimento di Fisica e Chimica
- Università degli Studi di Palermo
- 90123 Palermo
- Italy
| | - M. Valcárcel
- Department of Analytical Chemistry
- Institute of Fine Chemistry and Nanochemistry
- 14071 Córdoba
- Spain
| | - F. Messina
- Dipartimento di Fisica e Chimica
- Università degli Studi di Palermo
- 90123 Palermo
- Italy
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18
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Leigheb M, Sabbatini M, Baldrighi M, Hasenboehler EA, Briacca L, Grassi F, Cannas M, Avanzi G, Luigi Mario C. Prospective analysis of pain and pain management in an emergency department. Acta Biomed 2017; 88. [PMID: 29083349 PMCID: PMC6357652 DOI: 10.23750/abm.v88i4-s.6790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
. BACKGROUND AND AIM OF THE WORK The aim of pain management in the Emergency Department (ED) is to temporarily optimize patient quality of life by reducing acute discomfort. The goals of this study were to evaluate the intensity and location of pain experienced by patients in the ED, the time to analgesia administration in the ED, and the patient's satisfaction so to identify potential useful interventions to improve pain management. METHODS We prospectively collected data on the intensity of pain experienced by 137 patients during their ED stays using the Visual Analog Scale (VAS) and the Numeric Rating Scale (NRS). Patients were further stratified by pain intensity according to three categories, and by cause of pain. RESULTS NRS pain measurements were higher than VAS measurements. Patients who took pain medication within a few hours before their ED visit had a higher mean VAS score at arrival in comparison to patients who did not. Patients treated with pain medications, compared to the non-treated, had more pain at arrival; abdominal pain was treated earlier than non-abdominal pain, whereas no difference in timing of medication administration was noted between traumatic and non-traumatic pain. Among the hospitalized patients, the chest was the most common location of pain; these patients had lower NRS scores than non-hospitalized patients. Patients with mild to moderate pain were more satisfied then those with severe pain. CONCLUSIONS The discrepancy between NRS and VAS scores suggests that pain intensity cannot be determined accurately according to pain scale data alone but should also incorporate clinical judgment.
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Affiliation(s)
- Massimiliano Leigheb
- Department of Orthopaedics and Traumatology, University Hospital “Maggiore della carità”, Novara, Italy
| | - Maurizio Sabbatini
- Department of Science and Technology Innovation, Università del Piemonte Orientale, Alessandria, Italy,Correspondence: Maurizio Sabbatini, Dip. Scienze e Innovazione Tecnologica, Università del Piemonte Orientale UPO, via T. Michel 11 - 15121 Alessandria, Italy. Tel. +39 0131 360261, Fax +39 0131 360243; E-mail:
| | - Marco Baldrighi
- Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy
| | - Erik A. Hasenboehler
- Department of Orthopaedic Surgery Adult and Trauma Service, The Johns Hopkins Hospital and Johns Hopkins Bayview Medical Center, Baltimore MD, USA
| | - Luca Briacca
- Department of Emergency Medicine, University Hospital “Maggiore della carità”, Novara Italy
| | - Federico Grassi
- Department of Orthopaedics and Traumatology, University Hospital “Maggiore della carità”, Novara, Italy,Department of Health Sciences, Università del Piemonte Orientale, Italy
| | - Mario Cannas
- Department of Health Sciences, Università del Piemonte Orientale, Italy
| | - Giancarlo Avanzi
- Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy,Department of Emergency Medicine, University Hospital “Maggiore della carità”, Novara Italy
| | - Castello Luigi Mario
- Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy,Department of Emergency Medicine, University Hospital “Maggiore della carità”, Novara Italy
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19
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Sabbatini M, Bosetti M, Borrone A, Moalem L, Taveggia A, Verna G, Cannas M. Erythropoietin stimulation of human adipose tissue for therapeutic refilling releases protective cytokines. J Tissue Eng 2016; 7:2041731416671278. [PMID: 27738510 PMCID: PMC5042341 DOI: 10.1177/2041731416671278] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 09/06/2016] [Indexed: 12/22/2022] Open
Abstract
Apoptosis and inflammatory processes may be at the basis of reducing graft survival. Erythropoietin is a tissue-protective hormone with pleiotropic potential, and it interferes with the activities of pro-inflammatory cytokines and stimulates healing following injury, preventing destruction of tissue surrounding the injury site. It may represent a useful tool to increase the autograft integration. Through the use of multipanel kit cytokine analysis we have detected the cytokines secreted by human tissue adipose mass seeded in culture following withdrawal by Coleman’s modified technique in three groups: control, after lipopolysaccharides stimulation and after erythropoietin stimulation. In the control group, we have observed expression of factors that may have a role in protecting the tissue homeostatic mechanism. But the same factors were secreted following stimulation with lipopolysaccharides combined with others factors that delineated the inflammatory state. Instead through erythropoietin stimulation, the factors known to exert tissue-protective action were secreted. Therefore, the use of a trophic factors such as erythropoietin may help to inhibit the potential inflammatory process development and stimulate the activation of reparative/regenerative process in the tissue graft.
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Affiliation(s)
- Maurizio Sabbatini
- Department of Science and Innovation Technology, UPO University, Alessandria, Italy
| | | | | | - Liah Moalem
- Department of Plastic and Reconstructive Surgery, Hospital 'Maggiore della Carità', Novara, Italy
| | - Antonio Taveggia
- Department of Plastic and Reconstructive Surgery, Hospital 'Maggiore della Carità', Novara, Italy
| | - Giovanni Verna
- Department of Plastic and Reconstructive Surgery, Hospital 'Maggiore della Carità', Novara, Italy
| | - Mario Cannas
- Department of Health Sciences, UPO University, Novara, Italy
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20
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Caimmi PP, Sabbatini M, Fusaro L, Borrone A, Cannas M. A study of the mechanical properties of ePTFE suture used as artificial mitral chordae. J Card Surg 2016; 31:498-502. [PMID: 27388975 DOI: 10.1111/jocs.12799] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND AIM OF THE STUDY We investigated the dimensional and mechanical properties of polyetetrafluorene (ePTFE) sutures used as artificial chordae during mitral valve repair. METHODS Mechanical properties of ePTFE synthetic chordae tendineae were tested with a servo hydraulic testing machine. Several different lengths from 2 to 14 cm were studied under both single and multiple mechanical traction. RESULTS The mechanical behavior of artificial chordae reveals that three centimeters is the length over which we observe a significant increase in stiffness. The chordae stiffness grows further at the length greater than seven centimeters following a low number of traction cycles. CONCLUSION The increase of the length of artificial ePTFE chordae is accompanied by an increasing stiffness that compromises the long-term resistance of the chordae. ePTFE length can alter the performance of artificial chordae. This suggests that mitral valve repairs which anchor ePTFE neochordae to the ventricular apex may have less durability than when anchored to the tips of the papillary muscles.
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Affiliation(s)
- Philippe Primo Caimmi
- Department of Cardiovascular Sugery, San Gaudenzio Clinic, Health Care Group "Policlinico di Monza", Novara, Italy
| | - Maurizio Sabbatini
- Department of Science and Innovation Technology, University Eastern Piedmont, UPO, Alessandria, Novara, Vercelli, Italy
| | - Luca Fusaro
- Department of Health Sciences, Human Anatomy, University Eastern Piedmont, UPO, Alessandria, Novara, Vercelli, Italy
| | - Alessia Borrone
- Department of Pharmacy Science, University Eastern Piedmont, UPO, Alessandria, Novara, Vercelli, Italy
| | - Mario Cannas
- Department of Health Sciences, Human Anatomy, University Eastern Piedmont, UPO, Alessandria, Novara, Vercelli, Italy
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21
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Leigheb M, Pogliacomi F, Bosetti M, Boccafoschi F, Sabbatini M, Cannas M, Grassi F. Postoperative blood salvage versus allogeneic blood transfusion in total knee and hip arthroplasty: a literature review. Acta Biomed 2016; 87 Suppl 1:6-14. [PMID: 27104315] [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] [Received: 04/15/2016] [Accepted: 04/15/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND AND AIM OF THE WORK We aimed to compare Postoperative Blood Salvage (PBS) with Allogeneic Blood Transfusion (ABT) in patients undergoing Total Hip and Knee Arthroplasty (THA, TKA). METHODS A bibliographic research was carried out in order to review the literature dedicated to postoperative blood salvage in major orthopaedic surgery, excluding papers dealing exclusively with preoperative autologous donation, intraoperative blood salvage and ABT. PBS and ABT were compared according to complications, costs and duration of hospitalization. PBS effectiveness in reducing ABT was also assessed. RESULTS PBS system is useful for reducing the complication rate and the length of hospital stay if compared to ABT. Costs for the reinfusion of unwashed shed blood, washed blood, and allogeneic transfusion are controversial among the different authors. Several papers demonstrate that PBS significantly reduces the need of postoperative ABT in both THA and TKA, while there is low evidence that PBS does not affect the risk of surgical wound complications. To reduce potential risks related to PBS, including non-hemolytic febrile reaction, the reinfusion of saved blood should begin within 4-6 hours after the start of collection through the wound drainage. CONCLUSIONS According to literature, PBS appears to be a valid alternative to ABT, which is the standard treatment for postoperative anemia in THA and TKA. Contraindications to PBS must be ruled out before recommending it to patients undergoing major orthopaedic procedures.
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Affiliation(s)
- Massimiliano Leigheb
- Orthopaedics and Traumatology, A.O.U. "Maggiore d.c." Universiy of Eastern Piedmont, Novara.
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22
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Messina F, Sciortino L, Buscarino G, Agnello S, Gelardi F, Cannas M. Photoluminescence of Carbon Dots Embedded in a SiO2 Matrix. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.matpr.2016.02.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Bosetti M, Sabbatini M, Calarco A, Borrone A, Peluso G, Cannas M. Effect of retinoic acid and vitamin D3 on osteoblast differentiation and activity in aging. J Bone Miner Metab 2016; 34:65-78. [PMID: 25691285 DOI: 10.1007/s00774-014-0642-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 11/24/2014] [Indexed: 02/04/2023]
Abstract
Several studies have evidenced that in aging, osteoblast functional activity is impaired: osteoblast proliferation is slower and matrix deposition is less efficient. Because peroxisome-proliferator-activated receptor γ2 (PPARγ2) and fatty acids are important inhibitory signals in osteoblast development, we have investigated in human primary osteoblasts obtained from patients of different ages, the influence of retinoic acid and calcitriol on enzymes involved in differentiative (PPARγ2, β-catenin, and insulin-like growth factor 1) and metabolic (carnitine palmitoyltransferase 1) intracellular pathways, and on transglutaminase 2, as enzyme fundamental for stabilizing the newly deposited extracellular matrix in bone. Retinoic acid and calcitriol influenced, respectively, proliferation and differentiation of osteoblasts, and an increase in PPARγ2 expression was observed following retinoic acid administration, whereas a decrease was observed following calcitriol administration. Aging widely influenced all parameters analyzed (the proliferation, differentiation, and new matrix deposition are significantly reduced in aged osteoblasts), with the exception of PPARγ2, which we found to be constitutively overexpressed and not modulated by retinoic acid or calcitriol administration. Our findings show the impaired ability of aged osteoblasts to perform adequate functional response and draw attention to the therapeutic approaches for bone healing in elderly patients.
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Affiliation(s)
- Michela Bosetti
- Pharmacy Science Department, University of Eastern Piedmont, Alessandria, Novara, Vercelli, Italy
| | - Maurizio Sabbatini
- Department of Health Sciences, University of Eastern Piedmont, Alessandria, Novara, Vercelli, Italy.
- Dipartmento Scienze della Salute, Università del Piemonte Orientale "Amedeo Avogadro", via Solaroli 17, 28100, Novara, Italy.
| | - Anna Calarco
- Institute of Protein Biochemistry, CNR, Naples, Italy
| | - Alessia Borrone
- Department of Health Sciences, University of Eastern Piedmont, Alessandria, Novara, Vercelli, Italy
| | | | - Mario Cannas
- Department of Health Sciences, University of Eastern Piedmont, Alessandria, Novara, Vercelli, Italy
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Boccafoschi F, Botta M, Fusaro L, Copes F, Ramella M, Cannas M. Decellularized biological matrices: an interesting approach for cardiovascular tissue repair and regeneration. J Tissue Eng Regen Med 2015; 11:1648-1657. [PMID: 26511323 DOI: 10.1002/term.2103] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 01/30/2015] [Revised: 07/02/2015] [Accepted: 09/15/2015] [Indexed: 12/22/2022]
Abstract
The repair and replacement of blood vessels is one of the most challenging topics for biomedical research. Autologous vessels are preferred as graft materials, but they still have many issues to overcome: for instance, they need multiple surgical procedures and often patients may not have healthy and surgically valuable arteries useful as an autograft. A tissue-engineering approach is widely desirable to generate biological vascular prostheses. Recently, decellularization of native tissue has gained significant attention in the biomedical research field. This method is used to obtain biological scaffolds that are expected to maintain the complex three-dimensional structure of the extracellular matrix, preserving the biomechanical properties of the native tissues. The decellularizing methods and the biomechanical characteristics of these products are presented in this review. Decellularization of biological matrices induces the loss of major histocompatibility complex (MHC), which is expected to promote an immunological response by the host. All the studies showed that decellularized biomaterials possess adequate properties for xenografting. Concerning their mechanical properties, several studies have demonstrated that, although chemical decellularization methods do not affect the scaffolds' mechanical properties, these materials can be modified through different treatments in order to provide the desired mechanical characteristics, depending on the specific application. A short overview of legislative issues concerning the use of decellularized substitutes and future perspectives in surgical applications is also presented. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Francesca Boccafoschi
- Department of Health Sciences, University of Piemonte Orientale 'A. Avogadro', Novara, Italy
| | - Margherita Botta
- Department of Health Sciences, University of Piemonte Orientale 'A. Avogadro', Novara, Italy
| | - Luca Fusaro
- Department of Health Sciences, University of Piemonte Orientale 'A. Avogadro', Novara, Italy
| | - Francesco Copes
- Department of Health Sciences, University of Piemonte Orientale 'A. Avogadro', Novara, Italy
| | - Martina Ramella
- Department of Health Sciences, University of Piemonte Orientale 'A. Avogadro', Novara, Italy
| | - Mario Cannas
- Department of Health Sciences, University of Piemonte Orientale 'A. Avogadro', Novara, Italy
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Rizzolo S, Marin E, Cannas M, Boukenter A, Ouerdane Y, Périsse J, Macé JR, Bauer S, Marcandella C, Paillet P, Girard S. Radiation effects on optical frequency domain reflectometry fiber-based sensor. Opt Lett 2015; 40:4571-4574. [PMID: 26469566 DOI: 10.1364/ol.40.004571] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We investigate the radiation effects on germanosilicate optical fiber acting as the sensing element of optical frequency domain reflectometry devices. Thanks to a new setup permitting to control temperature during irradiation, we evaluate the changes induced by 10 keV x rays on their Rayleigh response up to 1 MGy in a temperature range from -40°C up to 75°C. Irradiation at fixed temperature points out that its measure is reliable during both irradiation and the recovery process. Mixed temperature and radiation measurements show that changing irradiation temperature leads to an error in distributed measurements that depends on the calibration procedure. These results demonstrate that Rayleigh-based optical fiber sensors are very promising for integration in harsh environments.
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Cangialosi C, Girard S, Boukenter A, Marin E, Cannas M, Delepine-Lesoille S, Marcandella C, Paillet P, Ouerdane Y. Steady state γ-ray radiation effects on Brillouin fiber sensors. ACTA ACUST UNITED AC 2015. [DOI: 10.1117/12.2194990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Bosetti M, Borrone A, Follenzi A, Messaggio F, Tremolada C, Cannas M. Human Lipoaspirate as Autologous Injectable Active Scaffold for One-Step Repair of Cartilage Defects. Cell Transplant 2015; 25:1043-56. [PMID: 26395761 DOI: 10.3727/096368915x689514] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Research on mesenchymal stem cells from adipose tissue shows promising results for cell-based therapy in cartilage lesions. In these studies, cells have been isolated, expanded, and differentiated in vitro before transplantation into the damaged cartilage or onto materials used as scaffolds to deliver cells to the impaired area. The present study employed in vitro assays to investigate the potential of intra-articular injection of micro-fragmented lipoaspirate as a one-step repair strategy; it aimed to determine whether adipose tissue can act as a scaffold for cells naturally present at their anatomical site. Cultured clusters of lipoaspirate showed a spontaneous outgrowth of cells with a mesenchymal phenotype and with multilineage differentiation potential. Transduction of lipoaspirate clusters by lentiviral vectors expressing GFP evidenced the propensity of the outgrown cells to repopulate fragments of damaged cartilage. On the basis of the results, which showed an induction of proliferation and ECM production of human primary chondrocytes, it was hypothesized that lipoaspirate may play a paracrine role. Moreover, the structure of a floating culture of lipoaspirate, treated for 3 weeks with chondrogenic growth factors, changed: tissue with a high fat component was replaced by a tissue with a lower fat component and connective tissue rich in GAG and in collagen type I, increasing the mechanical strength of the tissue. From these promising in vitro results, it may be speculated that an injectable autologous biologically active scaffold (lipoaspirate), employed intra-articularly, may 1) become a fibrous tissue that provides mechanical support for the load on the damaged cartilage; 2) induce host chondrocytes to proliferate and produce ECM; and 3) provide cells at the site of injury, which could regenerate or repair the damaged or missing cartilage.
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Affiliation(s)
- Michela Bosetti
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
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Spallino L, Vaccaro L, Cannas M, Gelardi FM. Luminescence from nearly isolated surface defects in silica nanoparticles. J Phys Condens Matter 2015; 27:365301. [PMID: 26302715 DOI: 10.1088/0953-8984/27/36/365301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A structured emission/excitation pattern, proper of isolated defects, arises in a vacuum from silica nanoparticles. The luminescence, centered around 3.0-3.5 eV, is characterised by a vibronic progression due to the phonon coupling with two localised modes of frequency ∼1370 cm(-1) and ∼360 cm(-1), and decays in about 300 ns at 10 K. On increasing the temperature, the intensity and the lifetime decrease due to the activation of a non-radiative rate from the excited state. Concurrently, the temperature dependence of the lineshape evidences the low coupling with non-localised modes of the matrix (Huang-Rhys factor S ~ 0.2) and the poor influence of the inhomogeneous broadening. These findings outline an uncommon behaviour in the field of the optical properties of defects in amorphous solids, evidencing that the silica surface can allocate luminescent defects almost disentangled from the basal network.
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Affiliation(s)
- L Spallino
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, I-90123 Palermo, Italy
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Rizzolo S, Boukenter A, Marin E, Cannas M, Perisse J, Bauer S, Mace JR, Ouerdane Y, Girard S. Vulnerability of OFDR-based distributed sensors to high γ-ray doses. Opt Express 2015; 23:18997-19009. [PMID: 26367563 DOI: 10.1364/oe.23.018997] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Vulnerability of Optical Frequency Domain Reflectometry (OFDR) based sensors to high γ-ray doses (up to 10 MGy) is evaluated with a specific issue of a radiation-hardened temperature and strain monitoring system for nuclear industry. For this, we characterize the main radiation effects that are expected to degrade the sensor performances in such applicative domain: the radiation-induced attenuation (RIA), the possible evolution with the dose of the Rayleigh scattering phenomenon as well as its dependence on temperature and strain. This preliminary investigation is done after the irradiation and for five different optical fiber types covering the range from radiation-hardened fibers to highly radiation sensitive ones. Our results show that at these high dose levels the scattering mechanism at the basis of the used technique for the monitoring is unaffected (changes below 5%), authorizing acceptable precision on the temperature or strain measurements. RIA has to be considered as it limits the sensing range. From our vulnerability study, the OFDR sensors appear as promising candidates for nuclear industry even at doses as high as 10 MGy.
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Morana A, Girard S, Marin E, Marcandella C, Paillet P, Périsse J, Macé JR, Boukenter A, Cannas M, Ouerdane Y. Radiation tolerant fiber Bragg gratings for high temperature monitoring at MGy dose levels. Opt Lett 2014; 39:5313-5316. [PMID: 26466259 DOI: 10.1364/ol.39.005313] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report a method for fabricating fiber Bragg gratings (FBG) resistant to very severe environments mixing high radiation doses (up to 3 MGy) and high temperatures (up to 230°C). Such FBGs have been written in two types of radiation resistant optical fibers (pure-silica and fluorine-doped cores) by exposures to a 800 nm femtosecond IR laser at power exceeding 500 mW and then subjected to a thermal annealing treatment of 15 min at 750°C. Under radiation, our study reveals that the radiation induced Bragg wavelength shift (BWS) at a 3 MGy dose is strongly reduced compared to responses of FBGs written with nonoptimized conditions. The BWS remains lower than 10 pm for temperatures of irradiation ranging from 25°C to 230°C without noticeable decrease of the FBG peak amplitude. For an applicative point of view, this radiation induced BWS corresponds to an additional error on the temperature measurements lower than 1.5°C, opening the way to the development of radiation-tolerant multi-point temperature sensors for nuclear industry.
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Boccafoschi F, Ramella M, Sibillano T, De Caro L, Giannini C, Comparelli R, Bandiera A, Cannas M. Human elastin polypeptides improve the biomechanical properties of three-dimensional matrices through the regulation of elastogenesis. J Biomed Mater Res A 2014; 103:1218-30. [DOI: 10.1002/jbm.a.35257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 05/27/2014] [Accepted: 06/04/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Francesca Boccafoschi
- Department of Health Sciences; University of Piemonte Orientale “A. Avogadro”; 28100 Novara Italy
| | - Martina Ramella
- Department of Health Sciences; University of Piemonte Orientale “A. Avogadro”; 28100 Novara Italy
| | - Teresa Sibillano
- Institute of Crystallography; National Research Council; 70126 Bari Italy
| | - Liberato De Caro
- Institute of Crystallography; National Research Council; 70126 Bari Italy
| | - Cinzia Giannini
- Institute of Crystallography; National Research Council; 70126 Bari Italy
| | | | | | - Mario Cannas
- Department of Health Sciences; University of Piemonte Orientale “A. Avogadro”; 28100 Novara Italy
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Abstract
Abstract
The local coordination of europium in vitreous Eu metaphosphate has been investigated, using information obtainable from crystalline EuP3O9. One glassy sample and one crystalline sample of nominal EuP3O9 composition were examined by X-ray diffraction. The description of the close coordination of Eu, deduced from the orthorhombic structure of the crystalline sample, was used as a model for the amorphous situation. Besides, as a monoclinic form of Eu metaphosphate is also reported to exist, a second model was deduced from this structure, starting from the isomorphous monoclinic Yb metaphosphate. Best fitting calculations indicated that orthorhombic coordination is the better model for the short range order of europium in the vitreous metaphosphate.
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Affiliation(s)
- Mario Cannas
- Dipartimento di Scienze Chimiche, Universitä di Cagliari, Italy
| | - Enrico Manca
- Dipartimento di Scienze Fisiche, Universitä di Cagliari, Italy
| | - Gabriella Pinna
- Dipartimento di Scienze Chimiche, Universitä di Cagliari, Italy
| | - Marco Bettinelli
- Istituto Policattedra, Facolta di Scienze MFN, Universita di Verona, Italy
| | - Adolfo Speghini
- Istituto Policattedra, Facolta di Scienze MFN, Universita di Verona, Italy
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Cannas M, Marongiu G, Martin R, Keller HJ. Structure of a Pt(II)-Pt(IY) Mixed-Valence Linear Chain Complex: Bis (1,2-diaminopropane )platinum(II)bis (1,2-diaminepropane ) - dibromoplatinum(IV)tetraperchlorate. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1983-1105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
[Pt(C3H10N2)2][Pt(C3H10N2)2Br2](ClO4)4 crystallizes as flat orthorhombic needles with cell dimensions: a = 7.74(1); b = 11.14(2); c = 19.42(3) Å, Z = 1. Since rotation photographs showed diffuse patterns corresponding to odd values of k without any Bragg reflections, the subcell for which b = 5.57(1) Å was adopted for the structural analysis; it has systematic absences consistent with space groups Pc 2 a and Pcma; the structure was refined in both space groups by least squares and difference Fourier syntheses to R = 0.062 in Pc 2a and R = 0.064 in Pcma. A final decision between the two space groups proved to be impossible within the scope of the experiment. An analysis of the “diffuse” layers reveals that the bridging bromines vibrate in a one-dimensional collective mode within a lattice of “uniform”, fixed platinum cations.
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Affiliation(s)
- M. Cannas
- Istituto Chimico dell'Universitä, Via Ospedale 72, 09100 Cagliari, Italy
| | - G. Marongiu
- Istituto Chimico dell'Universitä, Via Ospedale 72, 09100 Cagliari, Italy
| | - R. Martin
- Institut für Kristallographie und Mineralogie der Universität, Theresienstraße 41, D-8000 München 2, GFR
| | - H. J. Keller
- Anorganisch-Chemisches Institut der Universität, Im Neuenheimer Feld 270, D-6900 Heidelberg 1, GFR
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Bosetti M, Fusaro L, Nicolì E, Borrone A, Aprile S, Cannas M. Poly-L-lactide acid-modified scaffolds for osteoinduction and osteoconduction. J Biomed Mater Res A 2013; 102:3531-9. [DOI: 10.1002/jbm.a.35016] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 09/25/2013] [Accepted: 10/30/2013] [Indexed: 11/08/2022]
Affiliation(s)
- M. Bosetti
- Dipartimento di Scienze del Farmaco; University of Eastern Piedmont; Novara Italy
| | - L. Fusaro
- Dipartimento di Scienze della Salute; University of Eastern Piedmont; Novara Italy
| | - E. Nicolì
- Dipartimento di Scienze del Farmaco; University of Eastern Piedmont; Novara Italy
| | - A. Borrone
- Dipartimento di Scienze della Salute; University of Eastern Piedmont; Novara Italy
| | - S. Aprile
- Dipartimento di Scienze del Farmaco; University of Eastern Piedmont; Novara Italy
| | - M. Cannas
- Dipartimento di Scienze della Salute; University of Eastern Piedmont; Novara Italy
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Nuccio L, Willis M, Schulz L, Fratini S, Messina F, D'Amico M, Pratt FL, Lord JS, McKenzie I, Loth M, Purushothaman B, Anthony J, Heeney M, Wilson RM, Hernández I, Cannas M, Sedlak K, Kreouzis T, Gillin WP, Bernhard C, Drew AJ. Importance of spin-orbit interaction for the electron spin relaxation in organic semiconductors. Phys Rev Lett 2013; 110:216602. [PMID: 23745907 DOI: 10.1103/physrevlett.110.216602] [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] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Indexed: 05/05/2023]
Abstract
Despite the great interest organic spintronics has recently attracted, there is only a partial understanding of the fundamental physics behind electron spin relaxation in organic semiconductors. Mechanisms based on hyperfine interaction have been demonstrated, but the role of the spin-orbit interaction remains elusive. Here, we report muon spin spectroscopy and time-resolved photoluminescence measurements on two series of molecular semiconductors in which the strength of the spin-orbit interaction has been systematically modified with a targeted chemical substitution of different atoms at a particular molecular site. We find that the spin-orbit interaction is a significant source of electron spin relaxation in these materials.
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Affiliation(s)
- L Nuccio
- Queen Mary University of London, School of Physics and Astronomy, Mile End Road, London E1 4NS, United Kingdom.
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Abstract
The importance of the complex interrelated regulatory pathways involving IGF factors and pancreatic hormones can be observed in several metabolic diseases, where the deregulation of these factors has a wide impact on bone health. These findings have stimulated us to compare the effect of IGF-I, IGF-II, insulin and preptin on human bone cells. The effect on cell differentiation and cell activity of osteoblasts and osteoclasts has been analysed. We have observed a significant effect by IGF-I, a modest effect by IGF-II and preptin and no effect after insulin administration on human primary osteoblast-like cells. All studied factors have shown an induction on human primary osteoclast differentiation and bone resorption activity, with IGF-I being the most potent factor. We hypothesize that these findings may be on the basis of decreased bone mass density observed in several diseases.
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Affiliation(s)
- Michela Bosetti
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale A. Avogadro, Alessandria, Novara, Vercelli, Italy
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Boccafoschi F, Mosca C, Ramella M, Carmagnola I, Chiono V, Ciardelli G, Cannas M. Biological evaluation of materials for cardiovascular application: The role of the short-term inflammatory response in endothelial regeneration. J Biomed Mater Res A 2013; 101:3131-40. [DOI: 10.1002/jbm.a.34630] [Citation(s) in RCA: 1] [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] [Received: 07/10/2012] [Revised: 01/10/2013] [Accepted: 01/30/2013] [Indexed: 11/12/2022]
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Boccafoschi F, Mosca C, Ramella M, Valente G, Cannas M. The effect of mechanical strain on soft (cardiovascular) and hard (bone) tissues: common pathways for different biological outcomes. Cell Adh Migr 2013; 7:165-73. [PMID: 23287581 PMCID: PMC3954035 DOI: 10.4161/cam.23020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Mechanical stress plays a pivotal role in developing and maintaining tissues functionalities. Cells are constantly subjected to strain and compressive forces that are sensed by specialized membrane mechanosensors and converted in biochemical signals able to differently influence cellular behavior in terms of surviving, differentiation and extracellular matrix remodeling. This review focuses on the effects of mechanical strain on soft and hard tissues. Unexpectedly, different cells share almost the same membrane mechanosensors and the relative intracellular pathways, but to ultimately obtain very different biological effects. The events occurring in cardiovascular and bone tissues are treated in details, showing that integrins, cadherins, growth factor receptors and ions channels specifically expressed in the different tissues are the major actors of the sight. However, MAPkinases and RhoGTPases are mainly involved in the biochemical intracellular signaling directed to nuclear modifications.
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Affiliation(s)
- Francesca Boccafoschi
- Department of Health Sciences, University of Piemonte Orientale A. Avogadro, Novara, Italy.
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Abstract
To verify the compatibility of rigid supports with neuronal cells for biomechanical application, we have evaluated the biocompatibility of Zn-doped bioglasses versus neuronal cell line SKNBE. Undifferentiated and retinoic acid-differentiated cells were used. We have observed that bioglasses doped with low concentration of Zn favored cell adhesion and proliferation of undifferentiated SKNBE neuronal cells, while the high Zn concentration strongly interfered with cell proliferation. Instead the high Zn concentration lightly stimulates the adhesive and strongly stimulates the phenotype characterization of differentiated SKNBE cells. Focal contact sites were observed in cells performing spread adhesive morphology, while they were down-regulated in cells performing differentiation behavior. GAP-43 and neurofilament were expressed in differentiated cells. However, GAP-43 was also found to be expressed in undifferentiated cells, where its expression seems related to proliferative behavior of cells. This work evidenced the importance of the biomaterial chemical structure in influencing proliferation or differentiation pathways of neuronal cells.
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Affiliation(s)
- Maurizio Sabbatini
- Department of Health Sciences, Research Centre of Biocompatibility and Tissue Engineering, Novara, Italy
| | - Francesca Boccafoschi
- Department of Health Sciences, Research Centre of Biocompatibility and Tissue Engineering, Novara, Italy
| | - Michela Bosetti
- Department of Pharmaceutical Sciences, University of Eastern Piedmont “A. Avogadro”, Novara, Italy
| | - Mario Cannas
- Department of Health Sciences, Research Centre of Biocompatibility and Tissue Engineering, Novara, Italy
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Cannas M, Atzori F, Rupsard F, Bustamante P, Loizeau V, Lefrançois C. PCBs contamination does not alter aerobic metabolism and tolerance to hypoxia of juvenile sole (Solea solea L. 1758). Aquat Toxicol 2013; 127:54-60. [PMID: 22682372 DOI: 10.1016/j.aquatox.2012.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 04/12/2012] [Accepted: 04/16/2012] [Indexed: 06/01/2023]
Abstract
Coastal habitats play a major role as nurseries for many fish species; however, they are also submitted to pollutants and oxygen fluctuations. Fry's concept of metabolic scope for activity was used to evaluate the effect of polychlorinated biphenyls (PCBs) on the aerobic metabolism in juvenile common sole (0-1 year old). Aerobic metabolic scope (AMS) in control and PCB-contaminated fish via food pathway was determined using respirometry techniques. Furthermore, the hypoxia tolerance in control and PCB-contaminated fish was evaluated by assessing their critical oxygen concentration (O(2crit)). Our results showed that while PCB-contaminated fish were able to maintain a constant AMS and O(2crit), PCBs tend to affect their aerobic metabolism by acting on maximal oxygen consumption (MO(2max)) in hypoxia and standard metabolic rate, but only at the highest PCB concentration between 30 and 60 days of exposure. In conclusion, we can hypothetise that the tested PCB-exposures may not impair the tolerance to hypoxia and the survival of common sole in their natural environment.
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Affiliation(s)
- M Cannas
- Littoral, Environnement et Sociétés (LIENSs), UMR 7266, CNRS-Université de La Rochelle, La Rochelle, France
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Porrini R, Valente G, Colombo E, Cannas M, Sabbatini M. Non pigmented melanocytic nevus of the oral cavity: a case report with emphasis on the surgical excision procedures. Minerva Stomatol 2013; 62:43-49. [PMID: 23422682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report a case of a 37-year-old caucasian woman presenting a 1 cm pinkish nodular asymptomatic lesion of the hard palate, slowly growing in the last years. The lesion underwent to biopsy. Histological analysis showed the nevus tissue layered under a continuous squamous epithelium. The stroma contained nests of medium-sized round cells, with regular monomorphous nuclei. The nevus cells were immunohistochemically positive for S-100 protein, while melanin, visualized by Masson-Fontana silver staining, was absent. Therefore a diagnosis of non pigmented melanocytic nevus was formulated. Because of its rarity and to avoid any risk of malignant transformation, a surgical treatment with wide excision was chosen; the surgical wound was previously covered with a membrane of fibrin and autologous platelets, and subsequently sutured, resulting in a total heal. This procedure seems to be the most reliable to approach melanocytic lesions of the oral cavity. Clinical diagnosis of non-pigmented nevi, either flat or protruding, is difficult, because the nevus shows a pinkish colour that is indistinguishable from that of the surrounding mucosa. Moreover, attention is required when similar clinical evidence occurs, because the localization inside the oral cavity may offer several problems of differential diagnosis.
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Boccafoschi F, Mosca C, Cannas M. Cardiovascular biomaterials: when the inflammatory response helps to efficiently restore tissue functionality? J Tissue Eng Regen Med 2012; 8:253-67. [DOI: 10.1002/term.1526] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 01/30/2012] [Accepted: 04/03/2012] [Indexed: 01/25/2023]
Affiliation(s)
- F. Boccafoschi
- Department of Health Sciences; University of Piemonte Orientale; “A. Avogadro” 28100 Novara Italy
| | - C. Mosca
- Department of Health Sciences; University of Piemonte Orientale; “A. Avogadro” 28100 Novara Italy
| | - M. Cannas
- Department of Health Sciences; University of Piemonte Orientale; “A. Avogadro” 28100 Novara Italy
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Abstract
Ventilation frequency (F(V) ) in motionless common sole Solea solea was measured before and after a startling stimulus in normoxia and in hypoxia (15% air saturation). Startling reduced F(V) in normoxia (from mean ±s.e. 41 ± 3·3 beats min⁻¹ to near zero, i.e. 2·0 ± 1·8 beats min⁻¹) and in hypoxia (from mean ±s.e. 80 ± 4·4 to 58·8 ± 12·9 beats min⁻¹). It is suggested that the maintenance of high F(V) in hypoxia may increase the probability of detection by predators compared to normoxia.
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Affiliation(s)
- M Cannas
- LIENSs, UMR 6250, CNRS-University of La Rochelle, 17000 La Rochelle, France CNR, IAMC, Loc. Sa Mardini, 09072 Torregrande-Oristano, Italy
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Abstract
Ionic hydrogels are biocompatible interesting candidates for tissue-engineering applications, such as the creation of artificial skin, as they can also be used, along with growth factors and cells grown in vitro, for developing bioengineered tissues to be implanted. Among the growth factors that can be used to induce keratinocytes growth in vitro, epiregulin, a broad-specificity epidermal growth factor (EGF) family member, has been shown to be more effective than EGF and transforming growth factor-alpha (TGF-α) in promoting re-epithelization in vitro. To produce a drug-delivery hydrogel for epiregulin, bovine gelatin was cross-linked with poly(glutamic acid) (PLG) in the presence of epiregulin (5-50 ng/ml). Spontaneously immortalized human keratinocytes (HaCaT) were seeded on unloaded and epiregulin-loaded hydrogels and cell adhesion was evaluated after 6 h. Moreover, cell proliferation and stratification, cytokeratins (K5, K10), differentiation markers (filaggrin and transglutaminase-1 (TG-1)) and matrix metalloproteinases (MMP-2, MMP-9 and MMP-28) expression were evaluated after 7 days. The presence of epiregulin induced an increase in cell proliferation, stratification and K5 expression along with MMP-9 and MMP-28 expression, while all differentiation markers expression (K10, filaggrin, TG-1) was decreased. These data indicated that a simple hydrogel loaded with epiregulin could be an effective tool for skin tissue engineering.
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Affiliation(s)
- Filippo Renò
- a Human Anatomy Laboratory, Research Centre for Biocompatibility and Tissue Engineering, Experimental and Clinical Medicine Department, University of Eastern Piedmont 'A. Avogadro' , Via Solaroli 17 , 28100 , Novara , Italy
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Migliario M, Rizzi M, Rocchetti V, Cannas M, Renò F. In vitro toxicity of photodynamic antimicrobial chemotherapy on human keratinocytes proliferation. Lasers Med Sci 2012; 28:565-9. [PMID: 22565343 DOI: 10.1007/s10103-012-1112-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 04/19/2012] [Indexed: 11/26/2022]
Abstract
This in vitro experimental study has been designed to assess the effects of photodynamic antimicrobial chemotherapy (PACT) on human keratinocytes proliferation. Human keratinocytes (HaCaT) monolayers (∼0.5 cm(2)) have been irradiated with 635 nm red laser light with a fluence of 82.5 or 112.5 J/cm(2) in the absence or presence of toluidine (TB). Cell proliferation, monolayer area coverage, cytokeratin 5 (K5) and filaggrin (Fil) expression, and metalloproteinase (MMP)-2 and MMP-9 activity were measured after 72 h from laser irradiation. HaCaT proliferation was reduced by TB staining. Cell exposure to both low- and high-fluence laser irradiation in both presence and absence of TB staining reduced their proliferation and monolayer area extension. Moreover both laser treatments were able to reduce K5 and Fil expression and MMP-9 production in keratinocytes not treated with TB. These data indicate that PACT could exert toxic effects on normal proliferating keratinocytes present around parodontal pockets. The observed reduced cell proliferation along with a reduced production of enzymes involved in wound healing could alter the clinical outcome of the patients treated with PACT.
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Affiliation(s)
- Mario Migliario
- Dental Clinic, Health Sciences Department, University of Eastern Piedmont A. Avogadro, via Solaroli 17, 28100, Novara, Italy
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Boccafoschi F, Fusaro L, Mosca C, Bosetti M, Chevallier P, Mantovani D, Cannas M. The biological response of poly(L-lactide) films modified by different biomolecules: role of the coating strategy. J Biomed Mater Res A 2012; 100:2373-81. [PMID: 22528472 DOI: 10.1002/jbm.a.34180] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 03/15/2012] [Accepted: 03/19/2012] [Indexed: 11/08/2022]
Abstract
The interactions between the surface of synthetic scaffolds and cells play an important role in tissue engineering applications. To improve these interactions, two strategies are generally followed: surface coating with large proteins and surface grafting with small peptides. The proteins and peptides more often used and derived from the extracellular matrix, are fibronectin, laminin, and their active peptides, RGD and SIKVAV, respectively. The aim of this work was to compare the effects of coating and grafting of poly(L-lactide) (PLLA) films on MRC5 fibroblast cells. Grafting reactions were verified by X-ray photoelectron spectroscopy. Cell adhesion and proliferation on coated and grafted PLLA surfaces were measured by cell counting. Vinculin localization and distribution were performed on cell cultured on PLLA samples using a fluorescence microscopy technique. Finally, western blot was performed to compare signals of cell adhesion proteins, such as vinculin, Rac1, and RhoA, as well as cell proliferation, such as PCNA. These tests showed similar results for fibronectin and laminin coated PLLA, while RGD grafting is more effective compared with SIKVAV grafting. Considering the overall view of these results, although coating and grafting can both be regarded as effective methods for surface modification to enhance cell adhesion and proliferation on a biomaterial, RGD grafted PLLA show better cell adhesion and proliferation than coated PLLA, while SIKVAV grafted PLLA show similar adhesion but worse proliferation. These data verified different biological effects depending on the surface modification method used.
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Affiliation(s)
- F Boccafoschi
- Department of Health Sciences, University of Piemonte Orientale A. Avogadro, Novara, Italy.
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48
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Bosetti M, Boccafoschi F, Calarco A, Leigheb M, Gatti S, Piffanelli V, Peluso G, Cannas M. Behaviour of human mesenchymal stem cells on a polyelectrolyte-modified HEMA hydrogel for silk-based ligament tissue engineering. Journal of Biomaterials Science, Polymer Edition 2012; 19:1111-23. [DOI: 10.1163/156856208785540145] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- M. Bosetti
- a DiSCAFF, University of Eastern Piedmont "A. Avogadro", Novara, Italy
| | - F. Boccafoschi
- b Department of Clinical and Experimental Medicine, University of Eastern Piedmont "A. Avogadro", Human Anatomy Laboratory, Via Solaroli 17, 28100 Novara, Italy
| | - A. Calarco
- c Institute of Protein and Biochemistry, CNR, Naples, Italy
| | - M. Leigheb
- d Department of Clinical and Experimental Medicine, University of Eastern Piedmont "A. Avogadro", Human Anatomy Laboratory, Via Solaroli 17, 28100 Novara, Italy; SCO, Ortopedia e Traumatologia, Azienda Ospedaliera Maggiore della Carità, Novara, Italy
| | - S. Gatti
- e Department of Clinical and Experimental Medicine, University of Eastern Piedmont "A. Avogadro", Human Anatomy Laboratory, Via Solaroli 17, 28100 Novara, Italy
| | - V. Piffanelli
- f Department of Clinical and Experimental Medicine, University of Eastern Piedmont "A. Avogadro", Human Anatomy Laboratory, Via Solaroli 17, 28100 Novara, Italy
| | - G. Peluso
- g Institute of Protein and Biochemistry, CNR, Naples, Italy
| | - M. Cannas
- h Department of Clinical and Experimental Medicine, University of Eastern Piedmont "A. Avogadro", Human Anatomy Laboratory, Via Solaroli 17, 28100 Novara, Italy
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Renò F, Rizzi M, Cannas M. Gelatin-based anionic hydrogel as biocompatible substrate for human keratinocyte growth. J Mater Sci Mater Med 2012; 23:565-571. [PMID: 22160746 DOI: 10.1007/s10856-011-4519-9] [Citation(s) in RCA: 8] [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] [Received: 04/13/2011] [Accepted: 12/06/2011] [Indexed: 05/31/2023]
Abstract
Ionic hydrogels are biocompatible candidates for skin tissue engineering. Two hydrogels synthesized by crosslinking gelatin with polylysine (positively charged HG1) or polyglutamic acid (negatively charged HG2) were tested using spontaneously immortalized human keratinocytes (HaCaT). HaCaT cells displayed higher adhesion and proliferation onto HG2, forming a continuous and stratified epithelium after 7 days. Moreover HaCaT cells grown onto HG2 showed a decreased Epilysin and Filaggrin expression, while transglutaminase-1 expression was increased. Those data indicate that human keratinocyte can form a stratified epithelium onto HG2 that could therefore be an useful tool for skin tissue engineering.
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Affiliation(s)
- Filippo Renò
- Research Centre for Biocompatibility and Tissue Engineering, Department of Experimental and Clinical Medicine, University of Eastern Piedmont A. Avogadro, Novara, Italy.
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50
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Olivero F, Renò F, Carniato F, Rizzi M, Cannas M, Marchese L. A novel luminescent bifunctional POSS as a molecular platform for biomedical applications. Dalton Trans 2012; 41:7467-73. [DOI: 10.1039/c2dt30218g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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