51
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Saman S, Balouch A, Talpur FN, Memon AA, Mousavi BM, Verpoort F. Green synthesis of MgO nanocatalyst by using
Ziziphus mauritiana
leaves and seeds for biodiesel production. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6199] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Syed Saman
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro Pakistan
| | - Aamna Balouch
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro Pakistan
| | - Farah Naz Talpur
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro Pakistan
| | - Ayaz Ali Memon
- National Centre of Excellence in Analytical Chemistry University of Sindh Jamshoro Pakistan
| | - Bibi Maryam Mousavi
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China
| | - Francis Verpoort
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China
- National Research Tomsk Polytechnic University Tomsk Russian Federation
- Ghent University‐Global Campus Songdo Incheon South Korea
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52
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Zhang K, Pernitsky D, Jafari M, Lu Q. Effect of MgO Slaking on Silica Removal during Warm Lime Softening of SAGD Produced Water. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05484] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kailun Zhang
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta T2N 1N4, Canada
| | - David Pernitsky
- Stantec Consulting Inc., 200-325 25 Street SE, Calgary, Alberta T2A 7H8, Canada
| | - Maryam Jafari
- Baymag Inc., 800, 10655 Southport Road SW, Calgary, Alberta T2W 4Y1, Canada
| | - Qingye Lu
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, Alberta T2N 1N4, Canada
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53
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Eivazzadeh-Keihan R, Radinekiyan F, Aliabadi HAM, Sukhtezari S, Tahmasebi B, Maleki A, Madanchi H. Chitosan hydrogel/silk fibroin/Mg(OH) 2 nanobiocomposite as a novel scaffold with antimicrobial activity and improved mechanical properties. Sci Rep 2021; 11:650. [PMID: 33436831 PMCID: PMC7804245 DOI: 10.1038/s41598-020-80133-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 12/17/2020] [Indexed: 01/29/2023] Open
Abstract
Herein, a novel nanobiocomposite scaffold based on modifying synthesized cross-linked terephthaloyl thiourea-chitosan hydrogel (CTT-CS hydrogel) substrate using the extracted silk fibroin (SF) biopolymer and prepared Mg(OH)2 nanoparticles was designed and synthesized. The biological capacity of this nanobiocomposite scaffold was evaluated by cell viability method, red blood cells hemolytic and anti-biofilm assays. According to the obtained results from 3 and 7 days, the cell viability of CTT-CS/SF/Mg(OH)2 nanobiocomposite scaffold was accompanied by a considerable increment from 62.5 to 89.6% respectively. Furthermore, its low hemolytic effect (4.5%), and as well, the high anti-biofilm activity and prevention of the P. aeruginosa biofilm formation confirmed its promising hemocompatibility and antibacterial activity. Apart from the cell viability, blood biocompatibility, and antibacterial activity of CTT-CS/SF/Mg(OH)2 nanobiocomposite scaffold, its structural features were characterized using spectral and analytical techniques (FT-IR, EDX, FE-SEM and TG). As well as, given the mechanical tests, it was indicated that the addition of SF and Mg(OH)2 nanoparticles to the CTT-CS hydrogel could improve its compressive strength from 65.42 to 649.56 kPa.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Fateme Radinekiyan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Hooman Aghamirza Moghim Aliabadi
- Faculty of Chemistry, K.N. Toosi University of Technology, Tehran, Iran
- Protein Chemistry Laboratory, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Sima Sukhtezari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran
| | - Behnam Tahmasebi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, 16846-13114, Tehran, Iran.
| | - Hamid Madanchi
- Department of Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
- Drug Design and Bioinformatics Unit, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.
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54
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Calado LM, Taryba MG, Morozov Y, Carmezim MJ, Montemor M. Cerium phosphate-based inhibitor for smart corrosion protection of WE43 magnesium alloy. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137368] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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55
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Lee JH, Im K, Han S, Yoo SJ, Kim J, Kim JH. Bimodal-porous hollow MgO sphere embedded mixed matrix membranes for CO2 capture. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117065] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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56
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Najem IA, Edrees SJ, Rasin FA. Structural and Magnetic Characterisations of Pb-Doped MgO Nanoparticles by a Modified Pechini Method. IOP CONFERENCE SERIES: MATERIALS SCIENCE AND ENGINEERING 2020; 987:012027. [DOI: 10.1088/1757-899x/987/1/012027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
Doping magnesium oxide nanoparticles (MgO-NPs) forms a good material for magnetisation applications. The Room Temperature Ferromagnetic (RTFM) of Pb2+-doped ions MgO-NPs synthesised by a modified Pechini method are discussed in the present paper. The structural, morphological and magnetic properties of the samples were characterised by X-ray diffraction (XRD), Field Emission scanning electron microscopy (FE-SEM), Energy Dispersive Spectroscopy (EDS) and vibrating sample magnetometer (VSM).
The XRD results showed that the synthesised materials have a single set of peaks in the XRD patterns, corresponding to the cubic phase of MgO-NPs. As the Pb content increased in the host MgO-NPs leading to an increase in the lattice parameter, the interplanar spacing and the crystallite size; however, the intensity decreased.
Small spherical nanoparticles (22.87–29.05nm) were observed in the Pb2+-doped ions MgO samples by (FE-SEM). The purity of the samples was confirmed using EDS spectroscopy.
The pure MgO and doped samples exhibiting RTFM may be attributed to vacancy defects, which caused local magnetisation. The saturation magnetism (Ms) was found to be varied as a function of doping concentration. The maximum (Ms) was found at x=0.015 of Mg0.985Pb0.015O sample. The obtained results suggest that both Pb doping and oxygen vacancies play an important role in the development of room-temperature ferromagnetism.
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57
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Goldberg M, Krohicheva P, Fomin A, Khairutdinova D, Antonova O, Baikin A, Smirnov V, Fomina A, Leonov A, Mikheev I, Sergeeva N, Akhmedova S, Barinov S, Komlev V. Insitu magnesium calcium phosphate cements formation: From one pot powders precursors synthesis to in vitro investigations. Bioact Mater 2020; 5:644-658. [PMID: 32420515 PMCID: PMC7217922 DOI: 10.1016/j.bioactmat.2020.03.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 03/17/2020] [Accepted: 03/22/2020] [Indexed: 11/17/2022] Open
Abstract
Calcium phosphate cements are of great interest for researchers and their applications in medical practice expanded. Nevertheless, they have a number of drawbacks including the insufficient level of mechanical properties and low degradation rate. Struvite (MgNH4PO4) -based cements, which grew in popularity in recent years, despite their neutral pH and acceptable mechanical performance, release undesirable NH4 + ions during their resorption. This issue could be avoided by replacement of ammonia ions in the cement liquid with sodium, however, such cements have a pH values of 9-10, leading to cytotoxicity. Thus, the main goal of this investigation is to optimize the composition of cements to achieve the combination of desirable properties: neutral pH, sufficient mechanical properties, and the absence of cytotoxicity, applying Na2HPO4-based cement liquid. For this purpose, cement powders precursors in the CaO-MgO-P2O5 system were synthesized by one-pot process in a wide composition range, and their properties were investigated. The optimal performance was observed for the cements with (Ca + Mg)/P ratio of 1.67, which are characterized by newberyite phase formation during setting reaction, pH values close to 7, sufficient compressive strength up to 22 ± 3 MPa (for 20 mol.% of Mg), dense microstructure and adequate matrix properties of the surface. This set of features make those materials promising candidates for medical applications.
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Affiliation(s)
- M.A. Goldberg
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - P.A. Krohicheva
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - A.S. Fomin
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - D.R. Khairutdinova
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - O.S. Antonova
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - A.S. Baikin
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - V.V. Smirnov
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - A.A. Fomina
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - A.V. Leonov
- M.V. Lomonosov Moscow State University, Department of Chemistry, 119991, Leninskie Gory, 1, Moscow, Russian Federation
| | - I.V. Mikheev
- M.V. Lomonosov Moscow State University, Department of Chemistry, 119991, Leninskie Gory, 1, Moscow, Russian Federation
| | - N.S. Sergeeva
- Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 125284, 2nd Botkinsky pass., 3, Moscow, Russian Federation
| | - S.A. Akhmedova
- Federal State Budgetary Institution National Medical Research Radiological Center of the Ministry of Health of the Russian Federation, 125284, 2nd Botkinsky pass., 3, Moscow, Russian Federation
| | - S.M. Barinov
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
| | - V.S. Komlev
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334, Leninsky av, 49, Moscow, Russian Federation
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58
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Grasso ML, Fernández Albanesi L, Garroni S, Mulas G, Gennari FC. Methane production by mechanochemical processing of MgH2-Li2CO3 as sources of H2 and CO2 at room temperature. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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59
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Enhanced Anti-CO poisoning of platinum on mesoporous carbon spheres by abundant hydroxyl groups in methanol electro-oxidation. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135751] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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60
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Effects of incorporating calcined corals as natural antimicrobial agent into active packaging system for milk storage. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110781. [PMID: 32279809 DOI: 10.1016/j.msec.2020.110781] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/24/2020] [Accepted: 02/25/2020] [Indexed: 02/06/2023]
Abstract
A series of nylon (NY)/linear low-density polyethylene (LLDPE) containing calcined corals (NY/LL-CORALS) composite films were prepared using the cast extrusion method. We investigated the effect of different contents of incorporated calcined corals on the physical properties and antimicrobial activity of the composite films as well as their feasibility for milk storage applications. The results indicated that the main compound in calcined corals was calcium oxide (CaO). As the calcined corals content increased, the crystallinity of the composite films slightly decreased, but no significant changes in their thermal stability and permeability were observed. The NY/LL-CORALS composite films exhibited excellent antimicrobial performance against Escherichia coli and Staphylococcus aureus. Notably, the NY/LL-CORALS packaging significantly extended the lag time of bacteria and delayed the bacterial growth cycle in milk during storage. Thus, the NY/LL-CORALS composite films could be a potential food packaging material that could prolong the shelf life of fresh food.
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61
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Sadeghi K, Thanakkasaranee S, Lim IJ, Seo J. Calcined marine coral powders as a novel ecofriendly antimicrobial agent. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110193. [DOI: 10.1016/j.msec.2019.110193] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/10/2019] [Indexed: 01/27/2023]
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62
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Paryab A, Madaah Hosseini HR, Abedini F, Dabbagh A. Synthesis of magnesium-based Janus micromotors capable of magnetic navigation and antibiotic drug incorporation. NEW J CHEM 2020. [DOI: 10.1039/d0nj00537a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe3O4 superparamagnetic nanoparticles were used in magnesium based Janus micromotors for the first time and the bactericidal activity of the micromotors reached nearly 100%.
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Affiliation(s)
- Amirhosein Paryab
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
| | | | - Fatemeh Abedini
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
| | - Ali Dabbagh
- Department of Materials Science and Engineering
- Sharif University of Technology
- Tehran
- Iran
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63
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Surikanti G, Bajaj P, Sunkara MV. g-C 3N 4-Mediated Synthesis of Cu 2O To Obtain Porous Composites with Improved Visible Light Photocatalytic Degradation of Organic Dyes. ACS OMEGA 2019; 4:17301-17316. [PMID: 31656904 PMCID: PMC6811861 DOI: 10.1021/acsomega.9b02031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/16/2019] [Indexed: 05/25/2023]
Abstract
A highly porous architecture of graphitic carbon nitride g-C3N4/Cu2O nanocomposite in the form of cubes with a side length of ≈ 1 μm, large pores of 1.5 nm, and a high surface area of 9.12 m2/g was realized by an optimized in situ synthesis protocol. The synthesis protocol involves dispersing a suitable "Cu" precursor into a highly exfoliated g-C3N4 suspension and initiating the reaction for the formation of Cu2O. Systematic optimization of the conditions and compositions resulted in a highly crystalline g-C3N4/Cu2O composite. In the absence of g-C3N4, the Cu2O particles assemble into cubes with a size of around 300 nm and are devoid of pores. Detailed structural and morphological evaluations by powder X-ray diffraction and field emission scanning electron microscopy revealed the presence of highly exfoliated g-C3N4, which is responsible for the formation of the porous architecture in the cube like assembly of the composite. The micrographs clearly reveal the porous structure of the composite that retains the cubic shape of Cu2O, and the energy-dispersive spectroscopy supports the presence of g-C3N4 within the cubic morphology. Among the different g-C3N4/Cu2O compositions, CN/Cu-5 with 10% of g-C3N4, which is also the optimum composition resulting in a porous cubic morphology, shows the best visible light photocatalytic performance. This has been supported by the ultraviolet diffuse reflectance spectroscopy (UV-DRS) studies of the composite which shows a band gap of around 2.05 eV. The improved photocatalytic performance of the composite could be attributed to the highly porous morphology along with the suitable optical band gap in the visible region of the solar spectrum. The optimized composite, CN/Cu-5, demonstrates a visible light degradation of 81% for Methylene Blue (MB) and 85.3% for Rhodamine-B (RhB) in 120 min. The decrease in the catalyst performance even after three repeated cycles is less than 5% for both MB and RhB dyes. The rate constant for MB and RhB degradation is six and eight times higher with CN/Cu-5 when compared with the pure Cu2O catalyst. To validate our claim that the dye degradation is not merely decolorization, liquid chromatography-mass spectroscopy studies were carried out, and the end products of the degraded dyes were identified.
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Affiliation(s)
- Ganesh
Reddy Surikanti
- Nanomaterials
Laboratory, Department of Polymers and Functional Materials, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pooja Bajaj
- Nanomaterials
Laboratory, Department of Polymers and Functional Materials, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manorama V. Sunkara
- Nanomaterials
Laboratory, Department of Polymers and Functional Materials, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500 007, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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64
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Ferrández-Montero A, Lieblich M, González-Carrasco J, Benavente R, Lorenzo V, Detsch R, Boccaccini A, Ferrari B. Development of biocompatible and fully bioabsorbable PLA/Mg films for tissue regeneration applications. Acta Biomater 2019; 98:114-124. [PMID: 31085363 DOI: 10.1016/j.actbio.2019.05.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 12/17/2022]
Abstract
During recent years, Mg reinforced polylactic acid (PLA) composites have emerged as potential biocompatible and bioabsorbable materials for biomedical applications. It has been shown that Mg particles added to a matrix based on a biodegradable polymer can address the lack of bioactivity and the low mechanical properties of the polymers and, furthermore, it can counteract the detrimental effects associated to the high degradation rate of Mg, as alkalinization and elevated H2 release. Additionally, the polymer can protect the Mg particles, by tailoring their degradation rate. Former processing of these composites performed by extrusion, compression and injection molding employed Mg contents up to 10 wt%. Higher amounts of Mg resulted in heterogeneous materials and thermally degraded matrices, with the corresponding higher degradation rate. In the present work, Mg reinforced PLA films with Mg content as high as 50 wt% were obtained without compromising the thermal stability of the polymer. Firstly, a successful dispersion of Mg microparticles was achieved by a breakthrough in processing introducing a colloidal step where organic additives were added to modify the Mg particle surface and promote a chemically stable suspension. The resulting colloidal suspension was then used as feedstock to obtain composite films by tape casting. The films show advantageous in vitro behaviour in terms of degradation, hydrogen release and oxygen permeability. In addition, the viability with fibroblast cells (MEF) opens a window of opportunity for these composite films as bioabsorbable material for tissue engineering and wound dressing applications. STATEMENT OF SIGNIFICANCE: Magnesium materials have extraordinary biodegradable properties and bioactive behavior due to release of Mg2+ ions, which offer a promising opportunity for their applicability as biomaterials for tissue regeneration. However, Mg is one of the most reactive metals with a high degradation rate. In contact with water produces H2, associated with a risk of failure of the implant. One alternative to minimize this drawback is the use of Mg particles surrounded by a biodegradable biocompatible polymer such as polylactic acid (PLA) to obtain PLA/Mg composites. In this work we processed Mg reinforced PLA in the shape of films that would be suitable for tissue regeneration. In vitro behavior of PLA/Mg films demonstrated that Mg2+ ions increase the fibroblast cells growth.
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65
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Ansari A, Ali A, Asif M. Steroidal thiazolidinone derivatives: Design, synthesis and their molecular interaction with human serum albumin. Steroids 2019; 148:99-113. [PMID: 31082411 DOI: 10.1016/j.steroids.2019.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/15/2019] [Accepted: 02/26/2019] [Indexed: 12/17/2022]
Abstract
A series of steroidal thiazolidinone derivatives have been synthesized through one-pot multicomponent reaction involving steroidal ketone, thiosemicarbazide/methyl-thiosemicarbazide and DMAD in presence of AlCl3 as a Lewis acid catalyst. Among all the synthesized steroidal thiazolidinone derivatives, compound 7-9 (ST 7-9) were investigated for their in vitro molecular interaction with human serum albumin. Intrinsic fluorescence spectroscopy, constant wavelength synchronous fluorescence spectroscopy, circular dichroism and UV-visible absorption techniques have been exploited to characterize the binding phenomena in phosphate buffer solution at pH 7.4. The experimental results indicated that ST 7-9 bind to HSA and the intrinsic fluorescence of HSA was quenched through static quenching mechanism. The binding parameters were calculated and the binding constants obtained were 1.44 × 105 M-1 for ST 7, 0.84 × 105 M-1 for ST 8 and 1.06 × 105 M-1 for ST 9. Circular dichroism analysis confirms that the presence of ST 7-9, altered the secondary structure of HSA due to partial unfolding of the polypeptide chain. Furthermore, hemolytic activity assay demonstrated that the synthesized steroidal thiazolidinone derivatives have good compatibility towards human red blood cells. Finally, molecular docking studies revealed that the steroidal thiazolidinones can bind in the hydrophobic cavity of HSA, by hydrophobic and hydrogen bonding interaction. These results provided valuable information about the binding mechanism of ST 7-9 with HSA and play a pivotal role in the development of steroidal heterocycle inspired compounds.
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Affiliation(s)
- Anam Ansari
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India
| | - Abad Ali
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India; Organometallic Synthesis and Catalysis Group, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra, India
| | - Mohd Asif
- Steroid Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India
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66
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Albuquerque HMT, Santos CMM, Silva AMS. Cholesterol-Based Compounds: Recent Advances in Synthesis and Applications. Molecules 2018; 24:E116. [PMID: 30597999 PMCID: PMC6337470 DOI: 10.3390/molecules24010116] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/22/2018] [Accepted: 12/24/2018] [Indexed: 01/31/2023] Open
Abstract
This review reports on the latest developments (since 2014) in the chemistry of cholesterol and its applications in different research fields. These applications range from drug delivery or bioimaging applications to cholesterol-based liquid crystals and gelators. A brief overview of the most recent synthetic procedures to obtain new cholesterol derivatives is also provided, as well as the latest anticancer, antimicrobial, and antioxidant new cholesterol-based derivatives. This review discusses not only the synthetic details of the preparation of new cholesterol derivatives or conjugates, but also gives a short summary concerning the specific application of such compounds.
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Affiliation(s)
- Hélio M T Albuquerque
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
| | - Clementina M M Santos
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
- Centro de Investigação de Montanha (CIMO) Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Artur M S Silva
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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