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Matassa R, Gatti M, Crociati M, Brunelli R, Battaglione E, Papi M, De Spirito M, Nottola SA, Familiari G. Self-assembly of glycoprotein nanostructured filaments for modulating extracellular networks at long range. NANOSCALE 2023; 15:17972-17986. [PMID: 37905731 DOI: 10.1039/d3nr02644b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
The intriguing capability of branched glycoprotein filaments to change their hierarchical organization, mediated by external biophysical stimuli, continues to expand understanding of self-assembling strategies that can dynamically rearrange networks at long range. Previous research has explored the corresponding biological, physiological and genetic mechanisms, focusing on protein assemblies within a limited range of nanometric units. Using direct microscopy bio-imaging, we have determined the morpho-structural changes of self-assembled filament networks of the zona pellucida, revealing controlled levels of structured organizations to join distinct evolved stages of the oocyte (Immature, Mature, and Fertilized). This natural soft network reorganizes its corresponding hierarchical network to generate symmetric, asymmetric, and ultimately a state with the lowest asymmetry of the outer surface roughness, and internal pores reversibly changed from elliptical to circular configurations at the corresponding stages. These elusive morpho-structural changes are regulated by the nanostructured polymorphisms of the branched filaments by self-extension/-contraction/-bending processes, modulated by determinate theoretical angles among repetitive filament units. Controlling the nanoscale self-assembling properties by delivering a minimum number of activation bio-signals may be triggered by these specific nanostructured polymorphic organizations. Finally, this research aims to guide this soft biomaterial into a desired state to protect oocytes, eggs, and embryos during development, to favour/prevent the fertilization/polyspermy processes and eventually to impact interactions with bacteria/virus at multiscale levels.
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Affiliation(s)
- Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Marta Gatti
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Martina Crociati
- Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4, Perugia, 06126, Italy
- Centre for Perinatal and Reproductive Medicine, University of Perugia, 06129 Perugia, Italy
| | - Roberto Brunelli
- Department of Gynecological-Obstetric and Urologic Sciences, Sapienza University of Rome, Rome, Italy
| | - Ezio Battaglione
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Massimiliano Papi
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCSS, 00168 Rome, Italy
| | - Marco De Spirito
- Dipartimento di Neuroscienze, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168 Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCSS, 00168 Rome, Italy
| | - Stefania Annarita Nottola
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
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2
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Palmieri E, Pescosolido F, Montaina L, Carcione R, Petrella G, Cicero DO, Tamburri E, Battistoni S, Orlanducci S. A Sustainable Hydroxypropyl Cellulose-Nanodiamond Composite for Flexible Electronic Applications. Gels 2022; 8:gels8120783. [PMID: 36547307 PMCID: PMC9777684 DOI: 10.3390/gels8120783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022] Open
Abstract
Designing fully green materials for flexible electronics is an urgent need due to the growing awareness of an environmental crisis. With the aim of developing a sustainable, printable, and biocompatible material to be exploited in flexible electronics, the rheological, structural and charge transport properties of water-based hydroxypropyl cellulose (HPC)-detonation nanodiamond (DND) viscous dispersions are investigated. A rheological investigation disclosed that the presence of the DND affects the orientation and entanglement of cellulose chains in the aqueous medium. In line with rheological analyses, the NMR diffusion experiments pointed out that the presence of DND modifies the hydrodynamic behavior of the cellulose molecules. Despite the increased rigidity of the system, the presence of DND slightly enhances the ionic conductivity of the dispersion, suggesting a modification in the charge transport properties of the material. The electrochemical analyses, performed through Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS), revealed that the HPC-DND system is remarkably stable in the explored voltage range (-0.1 to +0.4 V) and characterized by a lowered bulk resistance with respect to HPC. Such features, coupled with the printability and filmability of the material, represent good requirements for the exploitation of such systems in flexible electronic applications.
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Affiliation(s)
- Elena Palmieri
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
- Correspondence:
| | - Francesca Pescosolido
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Luca Montaina
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Rocco Carcione
- Consiglio Nazionale delle Ricerche—Institute of Materials for Electronics and Magnetism (CNR-IMEM), Parco Area delle Scienze 37A, 43124 Parma, Italy
| | - Greta Petrella
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Daniel Oscar Cicero
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Emanuela Tamburri
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
| | - Silvia Battistoni
- Consiglio Nazionale delle Ricerche—Institute of Materials for Electronics and Magnetism (CNR-IMEM), Parco Area delle Scienze 37A, 43124 Parma, Italy
| | - Silvia Orlanducci
- Chemical Sciences Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00133 Rome, Italy
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Sarkodie B, Shen B, Asinyo B, Hu Y, Jiang J, Li C. Highly efficient Au/Fe 2O 3 for CO oxidation: The vital role of spongy Fe 2O 3 toward high catalytic activity and stability. J Colloid Interface Sci 2022; 608:2181-2191. [PMID: 34815090 DOI: 10.1016/j.jcis.2021.09.111] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/10/2021] [Accepted: 09/19/2021] [Indexed: 11/26/2022]
Abstract
Supported gold catalysts have drawn great attention for many decades due to their outstanding performance in remedying the environment from carbon monoxide (CO) pollution. In this study, due to the large surface area of spongy Fe2O3, fabricated by salt-assisted ultrasonic spray pyrolysis, a considerable amount of Au was loaded on spongy Fe2O3 compared to low-surface-area non-spongy Fe2O3. It is seen that the spongy Fe2O3 catalyst loaded with Au has an interface that can be extremely active for CO desorption and O2 activation. That means it has high catalytic activity in CO oxidation than non-spongy and low surface area Fe2O3 loaded with Au. Also, the incorporation of Au in low alkaline condition further enhances the interaction between Au and Fe2O3, providing more active sites. This made the catalyst to have better activity, good stability over 60 hrs, and there was no carbonate on its surface. It had full conversion at 30 °C on 120 L g-1h-1 with high TOF (2.2 s-1).
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Affiliation(s)
- Bismark Sarkodie
- Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bolei Shen
- Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Benjamin Asinyo
- Department of Industrial Art, Kwame Nkrumah University of Science and Technology, PMB, Kumasi, Ghana
| | - Yanjie Hu
- Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Jiechao Jiang
- Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chunzhong Li
- Shanghai Environmental Friendly Materials Technical Service Platform, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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Perluigi M, Picca A, Montanari E, Calvani R, Marini F, Matassa R, Tramutola A, Villani A, Familiari G, Domenico FD, Butterfield DA, Oh KJ, Marzetti E, Valentini D, Barone E. Aberrant crosstalk between insulin signaling and mTOR in young Down syndrome individuals revealed by neuronal-derived extracellular vesicles. Alzheimers Dement 2021; 18:1498-1510. [PMID: 34812584 PMCID: PMC10131479 DOI: 10.1002/alz.12499] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 09/10/2021] [Accepted: 09/15/2021] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Intellectual disability, accelerated aging, and early-onset Alzheimer-like neurodegeneration are key brain pathological features of Down syndrome (DS). Although growing research aims at the identification of molecular pathways underlying the aging trajectory of DS population, data on infants and adolescents with DS are missing. METHODS Neuronal-derived extracellular vesicles (nEVs) were isolated form healthy donors (HDs, n = 17) and DS children (n = 18) from 2 to 17 years of age and nEV content was interrogated for markers of insulin/mTOR pathways. RESULTS nEVs isolated from DS children were characterized by a significant increase in pIRS1Ser636 , a marker of insulin resistance, and the hyperactivation of the Akt/mTOR/p70S6K axis downstream from IRS1, likely driven by the higher inhibition of Phosphatase and tensin homolog (PTEN). High levels of pGSK3βSer9 were also found. CONCLUSIONS The alteration of the insulin-signaling/mTOR pathways represents an early event in DS brain and likely contributes to the cerebral dysfunction and intellectual disability observed in this unique population.
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Affiliation(s)
- Marzia Perluigi
- Department of Biochemical Sciences "A. Rossi-Fanelli", Sapienza University of Rome, Rome, Italy
| | - Anna Picca
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Elita Montanari
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, Zurich, Switzerland
| | - Riccardo Calvani
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Federico Marini
- Department of Chemistry, Sapienza University of Rome, Roma, Italy
| | - Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Rome, Italy
| | - Antonella Tramutola
- Department of Biochemical Sciences "A. Rossi-Fanelli", Sapienza University of Rome, Rome, Italy
| | - Alberto Villani
- Pediatric Unit, Bambino Gesù Children's Hospital-IRCCS, Rome, Italy
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Rome, Italy
| | - Fabio Di Domenico
- Department of Biochemical Sciences "A. Rossi-Fanelli", Sapienza University of Rome, Rome, Italy
| | - D Allan Butterfield
- Department of Chemistry and Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, USA
| | | | - Emanuele Marzetti
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.,Università Cattolica del Sacro Cuore, Department of Geriatrics and Orthopedics, Rome, Italy
| | | | - Eugenio Barone
- Department of Biochemical Sciences "A. Rossi-Fanelli", Sapienza University of Rome, Rome, Italy
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5
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Li Voti R, Leahu G, Sibilia C, Matassa R, Familiari G, Cerra S, Salamone TA, Fratoddi I. Photoacoustics for listening to metal nanoparticle super-aggregates. NANOSCALE ADVANCES 2021; 3:4692-4701. [PMID: 36134303 PMCID: PMC9417617 DOI: 10.1039/d1na00333j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/18/2021] [Indexed: 06/14/2023]
Abstract
Photoacoustic signal detection has been used to build a new strategy to determine the mesoscale self-assembly of metal nanoparticles in terms of size distribution and aggregate packing density (metal nanoparticle filling factor). A synergistic approach integrating photoacoustic signal and theoretical studies, validated by conventional light scattering and electron microscopy techniques, allows us to obtain a well-defined morphological interpretation of nanoparticle-based super-aggregates. By pumping light in a complex system, the acousto-thermal effect was listened to, providing information on the aggregation phenomena. Super-aggregates of covalently interconnected silver nanoparticles (AgNPs) functionalized with an organometallic dithiol are identified in solution, as a proof of concept for the versatility of the photoacoustic approach. According to our results, tiny AgNPs (size less than 10 nm) assembled into a 3D-network of super-aggregates (SA-AgNPs) with sizes in the range 100-200 nm and a filling factor in the range of 30-50%. Low-cost, rapid, and easy photoacoustic measurement in the low frequency range (less than 100 Hz) was revealed to be an innovative method to characterize the fundamental structure/property correlation of metal nanoparticle super-aggregates. This morpho-optical approach, which uses the absorption and scattering properties of nanoparticles in the liquid phase, opens new perspectives for advanced biomedical and structural applications.
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Affiliation(s)
- Roberto Li Voti
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome Via A. Scarpa 14 00161 Rome Italy
| | - Grigore Leahu
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome Via A. Scarpa 14 00161 Rome Italy
| | - Concita Sibilia
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome Via A. Scarpa 14 00161 Rome Italy
| | - Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Section of Human Anatomy, Sapienza University of Rome Via A. Borelli 50 00161 Rome Italy
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Section of Human Anatomy, Sapienza University of Rome Via A. Borelli 50 00161 Rome Italy
| | - Sara Cerra
- Department of Chemistry, Sapienza University of Rome P.le A. Moro 5 00185 Rome Italy
| | | | - Ilaria Fratoddi
- Department of Chemistry, Sapienza University of Rome P.le A. Moro 5 00185 Rome Italy
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6
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Matassa R, Cattaruzza MS, Sandorfi F, Battaglione E, Relucenti M, Familiari G. Direct imaging evidences of metal inorganic contaminants traced into cigarettes. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125092. [PMID: 33858086 DOI: 10.1016/j.jhazmat.2021.125092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/20/2020] [Accepted: 01/06/2021] [Indexed: 05/14/2023]
Abstract
Today, environmental health research on toxicological adverse effects of metal-inorganic materials diffused by cigarettes represents a new challenge for assessing new health risks directly related to the critical chemical-size features of the particles. Therefore, morpho-chemical analyses of hazardous particles become critical in response to the distinctive assumptions about the origin, evolution, and coexisting phases. Here, we report a detailed investigation through direct microscopy imaging of metal-inorganic contaminants for one traditional and two heat-not-burn commercial cigarettes of three different brands. Chemical-size studies revealed the critical presence of heavy metal-inorganic nanostructured microparticles on both paper and filter components of the cigarette, before and after smoking. The direct experimental imaging evidenced on how hazardous particles evolved in mass-size forming coexisting multi-phases of large agglomerate because of the persistence and accumulative effect of the heating puffing. The estimated porosity of the unsuitable engineered filters validated the allowed migration of micrometric pollutants independently from their intrinsic size-shape property. Furthermore, the inappropriate design of the filters made it an adverse sponge reservoir capable of collecting all possible hazardous chemical agents potentially toxic. These substantial results strongly support experimentally the tremendous effect of the smoke capable of transporting and manipulating a high amount of elusive particles, as a particles heat carrier.
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Affiliation(s)
- Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161 Rome, Italy.
| | - Maria Sofia Cattaruzza
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Filippo Sandorfi
- Department of Hygiene and Public Health, Alma Mater Studiorum University of Bologna, via San Giacomo 12, 40126 Bologna, Italy
| | - Ezio Battaglione
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161 Rome, Italy
| | - Michela Relucenti
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161 Rome, Italy
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161 Rome, Italy
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7
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Cerra S, Salamone TA, Sciubba F, Marsotto M, Battocchio C, Nappini S, Scaramuzzo FA, Li Voti R, Sibilia C, Matassa R, Beltrán AM, Familiari G, Fratoddi I. Study of the interaction mechanism between hydrophilic thiol capped gold nanoparticles and melamine in aqueous medium. Colloids Surf B Biointerfaces 2021; 203:111727. [PMID: 33819818 DOI: 10.1016/j.colsurfb.2021.111727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/12/2021] [Accepted: 03/24/2021] [Indexed: 11/17/2022]
Abstract
In the last years, intense efforts have been made in order to obtain colloidal-based systems capable of pointing out the presence of melamine in food samples. In this work, we reported about the recognition of melamine in aqueous solution, using gold nanoparticles stabilized with 3-mercapto-1-propanesulfonate (AuNPs-3MPS), with the aim of deepening how the recognition process works. AuNPs were synthesized using a wet chemical reduction method. The synthesized AuNPs-3MPS probe was fully characterized, before and after the recognition process, by both physicochemical (UV-vis, FT-IR, 1H-NMR, DLS and ζ-potential) and morphostructural techniques (AFM, HR-TEM). The chemical and electronic structure was also investigated by SR-XPS. The sensing method is based on the melamine-induced aggregation of AuNPs; the presence of melamine was successfully detected in the range of 2.5-500 ppm. The results achieved also demonstrate that negatively charged AuNPs-3MPS are potentially useful for determining melamine contents in aqueous solution. SR-XPS measurements allowed to understand interaction mechanism between the probe and the analyte. The presence of sulfonate groups allows a mutual interaction mediated by electrostatic bonds between nanoparticles surface thiols and positively charged amino groups of melamine molecules.
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Affiliation(s)
- Sara Cerra
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy.
| | - Tommaso A Salamone
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Fabio Sciubba
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Martina Marsotto
- Department of Sciences and CISDiC, Roma Tre University, Via della Vasca Navale 79, 00146, Rome, Italy
| | - Chiara Battocchio
- Department of Sciences and CISDiC, Roma Tre University, Via della Vasca Navale 79, 00146, Rome, Italy
| | - Silvia Nappini
- IOM CNR, Laboratorio TASC, S.S. 14 Km 163.5 AREA Science Park Basovizza, Trieste, 34149, Italy
| | - Francesca A Scaramuzzo
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, Via Antonio Scarpa 14, 00161, Rome, Italy
| | - Roberto Li Voti
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, Via Antonio Scarpa 14, 00161, Rome, Italy
| | - Concita Sibilia
- Department of Basic and Applied Sciences for Engineering (SBAI), Sapienza University of Rome, Via Antonio Scarpa 14, 00161, Rome, Italy
| | - Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy
| | - Ana Maria Beltrán
- Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, Escuela Politécnica Superior, Universidad de Sevilla, Virgen de África 7, 41011, Seville, Spain
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy
| | - Ilaria Fratoddi
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy.
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Li J, Zhao Y, Han X, Xiao D. A facile strategy for fabricating particle-on-flower Au-Cu 3BiS 3 nanostructures for enhanced photoelectrocatalytic activity in water splitting. NEW J CHEM 2021. [DOI: 10.1039/d0nj03448g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Au NP modified Cu3BiS3 nanostructures fabricated using a facile strategy, which exhibit higher photoelectrocatalytic performance.
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Affiliation(s)
- Jiajia Li
- School of Chemistry and Materials Engineering
- Huizhou University
- Huizhou 516007
- China
| | - Yun Zhao
- Laboratory of Clean Energy Chemistry and Materials
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Xiuxun Han
- Institute of Engineering Research
- Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - DingShu Xiao
- School of Chemistry and Materials Engineering
- Huizhou University
- Huizhou 516007
- China
- Dayawan Chemical Engineering Research Institute
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9
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Cerra S, Matassa R, Beltrán AM, Familiari G, Battocchio C, Pis I, Sciubba F, Scaramuzzo FA, Del Giudice A, Fratoddi I. Insights about the interaction of methotrexate loaded hydrophilic gold nanoparticles: Spectroscopic, morphological and structural characterizations. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111337. [DOI: 10.1016/j.msec.2020.111337] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/23/2020] [Accepted: 08/02/2020] [Indexed: 12/30/2022]
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10
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Taurone S, Miglietta S, Spoletini M, Feher J, Artico M, Papa V, Matassa R, Familiari G, Gobbi P, Micera A. Age related changes seen in human cornea in formalin fixed sections and on biomicroscopy in living subjects: A comparison. Clin Anat 2019; 33:245-256. [PMID: 31595552 PMCID: PMC7027767 DOI: 10.1002/ca.23488] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/21/2019] [Accepted: 09/20/2019] [Indexed: 12/11/2022]
Abstract
The purpose of our experimental research was to assess the effects of aging on the main corneal structures in healthy corneas. Small, human cornea samples were collected from 20 Caucasian subjects during surgery for traumatic lesions to the eye. Ten subjects were adults (mean age 28 years) and 10 were elderly (mean age 76 years). Morphological analysis was carried out using light microscopy and electron microscopy. Another 40 patients (20 young: mean age < 30 years; 20 elderly: mean age > 70 years) were studied in vivo by confocal microscopy. The resulting images were analyzed qualitatively, quantitatively, and statistically. The basic light microscope revealed a decrease in endothelial cell density with age accompanied by an increase in endothelial cell size. Transmission electron microscopy revealed a corneal thinning and a decrease in the number of corneal stromal cells. A marked decrease in stromal nerve fibers was observed in the older subjects compared to the younger ones. Variable pressure scanning electron microscopy (VP‐SEM) was used to make surface morphological observations and to determine the chemical composition of in vivo hydrated human corneas. Our results showed the effects of aging on normal corneal morphology highlighting the structural diversity of the corneal layers and revealing an age‐related reduction in nerve fibers, thus explaining the decreased corneal sensitivity that may be observed in the elderly. Clin. Anat. 33:245–256, 2020. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
| | - Selenia Miglietta
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, "Sapienza" University of Rome, Rome, Italy
| | | | - Janos Feher
- Division of Ophthalmology, University of Pecs, Pecs, Hungary
| | - Marco Artico
- Department of Sensory Organs, "Sapienza" University of Rome, Rome, Italy
| | - Veronica Papa
- Department of Motor Sciences and Wellness, University of Naples "Partenope", Naples, Italy
| | - Roberto Matassa
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, "Sapienza" University of Rome, Rome, Italy
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, "Sapienza" University of Rome, Rome, Italy
| | - Pietro Gobbi
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
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11
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Gold-Decorated Nanodiamonds: Powerful Multifunctional Materials for Sensing, Imaging, Diagnostics, and Therapy. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800793] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Pedroso-Santana S, Fleitas-Salazar N, Sarabia-Sainz A, Silva-Campa E, Angulo-Molina A, Pedroza-Montero M, Riera R. Nanodiamonds and gold nanoparticles to obtain a hybrid nanostructure with potential applications in biomedicine. NANOTECHNOLOGY 2018; 29:435101. [PMID: 30113316 DOI: 10.1088/1361-6528/aadad1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Using detonation nanodiamonds and fluorescent nitrogen-vacancy center nanodiamonds, linked to gold nanoparticles, we synthesized two hybrid nanostructures (HGDs) that were subsequently conjugated with a fluorophore. An amplification effect induced by the gold nanoparticles increased the emission spectrum of the fluorophore, maximizing the possibilities for imaging applications of these HGDs. The incubation of the nanostructures with HeLa cells produced no alteration of cell viability after 3 h and showed the presence of nanostructures in the cell cytoplasm at 24 h. These observations also indicate the potential biomedical use of the proposed HGDs.
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Affiliation(s)
- Seidy Pedroso-Santana
- Departamento de Investigación en Física, Universidad de Sonora, Hermosillo, Mexico. Apartado postal 5-88, C.P. 83190
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Matassa R, Familiari G, Battaglione E, Sibilia C, Leahu G, Belardini A, Venditti I, Fontana L, Fratoddi I. Electron microscopy reveals a soluble hybrid network of individual nanocrystals self-anchored by bifunctional thiol fluorescent bridges. NANOSCALE 2016; 8:18161-18169. [PMID: 27740664 DOI: 10.1039/c6nr06260a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Today, nanochemistry research of hybrid materials growth in liquid media represents a new challenge for tailoring specific nano-sized materials directly related to the hybrid electron-optical properties. Distinctive assumptions about the origin, the growth, and the functionalization of hybrid nanoparticles have recently been proposed by scientific research to attend the different aspects of observable behaviors. Therefore, appropriate morpho-structural observation of the hybrid nanoparticles is the most important factor for controlling the chemical and physical properties. Here, we report how the gold nanocrystals (Au-NCs) structurally covered by an outer layer material of 9,9-didodecyl-2,7-bisthiofluorene (FL) bifunctional stabilizer evolve into a self-organized 2D-network as a function of different nano-structural features. Detailed morpho-structural investigation of this hybrid material through electron microscopy techniques has been performed from the atomic-scale to hundreds of nanometers. The experimental information gathered allowed us to figure out the evolution growth of the gold-FL nanoparticles (AuFL-NPs) from the early stage of the gold-organic nucleation to the final assembled bi-dimensional network. The reported results represent a valuable background toward the full comprehension of growth mechanisms of organic-inorganic materials responsible for the final chemical and physical properties.
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Affiliation(s)
- Roberto Matassa
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Giuseppe Familiari
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Ezio Battaglione
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Section of Human Anatomy, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy.
| | - Concita Sibilia
- Department of Basic and Applied Sciences for Engineering, Sapienza University of Rome, Via Antonio Scarpa 16, 00161, Rome, Italy
| | - Grigore Leahu
- Department of Basic and Applied Sciences for Engineering, Sapienza University of Rome, Via Antonio Scarpa 16, 00161, Rome, Italy
| | - Alessandro Belardini
- Department of Basic and Applied Sciences for Engineering, Sapienza University of Rome, Via Antonio Scarpa 16, 00161, Rome, Italy
| | - Iole Venditti
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Laura Fontana
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Ilaria Fratoddi
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro 5, 00185, Rome, Italy
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