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罗 川, 张 莉, 冉 力, 尤 炫, 黄 石. [New Advances in the Application of Bacterial Cellulose Composite Materials in the Field of Bone Tissue Engineering]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2024; 55:243-248. [PMID: 38645860 PMCID: PMC11026885 DOI: 10.12182/20240360507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Indexed: 04/23/2024]
Abstract
Bacterial cellulose (BC) is a type of extracellular polymeric nanomaterial secreted by microorganisms over the course of their growth. It has gained significant attention in the field of bone tissue engineering due to its unique structure of three-dimensional fibrous network, excellent biocompatibility, biodegradability, and exceptional mechanical properties. Nevertheless, BC still has some weaknesses, including low osteogenic activity, a lack of antimicrobial properties, small pore size, issues with the degradation rate, and a mismatch in bone tissue regeneration, limiting its standalone use in the field of bone tissue engineering. Therefore, the modification of BC and the preparation of BC composite materials have become a recent research focus. Herein, we summarized the relationships between the production, modification, and bone repair applications of BC. We introduced the methods for the preparation and the modification of BC. Additionally, we elaborated on the new advances in the application of BC composite materials in the field of bone tissue engineering. We also highlighted the existing challenges and future prospects of BC composite materials.
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Affiliation(s)
- 川 罗
- 四川大学华西医院 骨科 (成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 莉 张
- 四川大学华西医院 骨科 (成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 力瑜 冉
- 四川大学华西医院 骨科 (成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 炫合 尤
- 四川大学华西医院 骨科 (成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 石书 黄
- 四川大学华西医院 骨科 (成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu 610041, China
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Banerjee S, Cabrera-Barjas G, Tapia J, Fabi JP, Delattre C, Banerjee A. Characterization of Chilean hot spring-origin Staphylococcus sp. BSP3 produced exopolysaccharide as biological additive. NATURAL PRODUCTS AND BIOPROSPECTING 2024; 14:15. [PMID: 38310179 PMCID: PMC10838260 DOI: 10.1007/s13659-024-00436-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/28/2024] [Indexed: 02/05/2024]
Abstract
A type of high molecular weight bioactive polymers called exopolysaccharides (EPS) are produced by thermophiles, the extremophilic microbes that thrive in acidic environmental conditions of hot springs with excessively warm temperatures. Over time, EPS became important as natural biotechnological additives because of their noncytotoxic, emulsifying, antioxidant, or immunostimulant activities. In this article, we unravelled a new EPS produced by Staphylococcus sp. BSP3 from an acidic (pH 6.03) San Pedro hot spring (38.1 °C) located in the central Andean mountains in Chile. Several physicochemical techniques were performed to characterize the EPS structure including Scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Atomic Force Microscopy (AFM), High-Performance Liquid Chromatography (HPLC), Gel permeation chromatography (GPC), Fourier Transform Infrared Spectroscopy (FTIR), 1D Nuclear Magnetic Resonance (NMR), and Thermogravimetric analysis (TGA). It was confirmed that the amorphous surface of the BSP3 EPS, composed of rough pillar-like nanostructures, is evenly distributed. The main EPS monosaccharide constituents were mannose (72%), glucose (24%) and galactose (4%). Also, it is a medium molecular weight (43.7 kDa) heteropolysaccharide. NMR spectroscopy demonstrated the presence of a [→ 6)-⍺-D-Manp-(1 → 6)-⍺-D-Manp-(1 →] backbone 2-O substituted with 1-⍺-D-Manp. A high thermal stability of EPS (287 °C) was confirmed by TGA analysis. Emulsification, antioxidant, flocculation, water-holding (WHC), and oil-holding (OHC) capacities are also studied for biotechnological industry applications. The results demonstrated that BSP3 EPS could be used as a biodegradable material for different purposes, like flocculation and natural additives in product formulation.
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Affiliation(s)
- Srijan Banerjee
- Instituto de Química de Recursos Naturales, Universidad de Talca, CP 3460000, Talca, Chile
| | - Gustavo Cabrera-Barjas
- Universidad San Sebastián Campus Las Tres Pascualas, Facultad de Ciencias Para el Cuidado de la Salud, Lientur 1457, CP 4080871, Concepción, Chile
| | - Jaime Tapia
- Instituto de Química de Recursos Naturales, Universidad de Talca, CP 3460000, Talca, Chile
| | - João Paulo Fabi
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, SP, Brazil
- Food Research Center (FoRC), CePID-FAPESP (Research, Innovation and Dissemination Centers, São Paulo Research Foundation), São Paulo, SP, Brazil
| | - Cedric Delattre
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut Pascal, 63000, Clermont-Ferrand, France
- Institut Universitaire de France (IUF), 1 Rue Descartes, 75005, Paris, France
| | - Aparna Banerjee
- Instituto de Ciencias Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile, CP 3467987, Talca, Chile.
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Tkachenko A, Özdemir S, Tollu G, Dizge N, Ocakoglu K, Prokopiuk V, Onishchenko A, Сhumachenko V, Virych P, Pavlenko V, Kutsevol N. Antibacterial and antioxidant activity of gold and silver nanoparticles in dextran-polyacrylamide copolymers. Biometals 2024; 37:115-130. [PMID: 37651060 DOI: 10.1007/s10534-023-00532-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 08/22/2023] [Indexed: 09/01/2023]
Abstract
Search for new antimicrobial agents is of great significance due to the issue of antimicrobial resistance, which nowadays has become more important than many diseases. The aim of this study was to evaluate the toxicity and biological effects of a dextran-graft-polyacrylamide (D-PAA) polymer-nanocarrier with/without silver or gold nanoparticles (AgNPs/D-PAA and AuNPs/D-PAA, respectively) to analyze their potential to replace or supplement conventional antibiotic therapy. The toxicity of nanocomplexes against eukaryotic cells was assessed on primary dermal fibroblasts using scratch, micronucleus and proliferation assays. DPPH (2,2-diphenyl-1-picrylhydrazylradical) assay was used to evaluate the antioxidant capacity of D-PAA, AgNPs/D-PAA and AuNPs/D-PAA. DNA cleavage, antimicrobial and biofilm inhibition effects of nanocomplexes were investigated. Nanocomplexes were found to be of moderate toxicity against fibroblasts with no genotoxicity observed. AgNPs/D-PAA reduced motility and proliferation at lower concentrations compared with the other studied nanomaterials. AgNPs/D-PAA and AuNPs/D-PAA showed radical scavenging capacities in a dose-dependent manner. The antimicrobial activity of AgNPs/D-PAA against various bacteria was found to be much higher compared to D-PAA and AuNPs/D-PAA, especially against E. hirae, E. faecalis and S. aureus, respectively. D-PAA, AgNPs/D-PAA and AuNPs/D-PAA showed DNA-cleaving and biofilm inhibitory activity, while AgNPs/D-PAA displayed the highest anti-biofilm activity. AgNPs/D-PAA and AuNPs/D-PAA were characterized by good antimicrobial activity. According to the findings of the study, AgNPs/D-PAA and AuNPs/D-PAA can be evaluated as alternatives for the preparation of new antimicrobial agents, the fight against biofilms, sterilization and disinfection processes. Our findings confirm the versatility of nanosystems based on dextran-polyacrylamide polymers and indicate that AgNPs/D-PAA and AuNPs/D-PAA can be evaluated as alternatives for the preparation of novel antimicrobial agents.
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Affiliation(s)
- Anton Tkachenko
- Research Institute of Experimental and Clinical Medicine, Kharkiv National Medical University, Kharkiv, 61022, Ukraine.
| | - Sadin Özdemir
- Food Processing Programme, Technical Science Vocational School, Mersin University, 33343, Yenişehir, Mersin, Turkey
| | - Gülşah Tollu
- Laboratory and Veterinary Health, Technical Science Vocational School, Mersin University, 33343, Yenişehir, Mersin, Turkey
| | - Nadir Dizge
- Department of Environmental Engineering, Mersin University, 33343, Yenişehir, Mersin, Turkey.
| | - Kasim Ocakoglu
- Department of Eng. Fundamental Sciences, Faculty of Engineering, Tarsus University, 33400, Tarsus, Turkey
| | - Volodymyr Prokopiuk
- Research Institute of Experimental and Clinical Medicine, Kharkiv National Medical University, Kharkiv, 61022, Ukraine
- Department of Cryobiochemistry, Institute for Problems of Cryobiology and Cryomedicine, National Academy of Sciences of Ukraine, Kharkiv, 61015, Ukraine
| | - Anatolii Onishchenko
- Research Institute of Experimental and Clinical Medicine, Kharkiv National Medical University, Kharkiv, 61022, Ukraine
| | - Vasyl Сhumachenko
- Faculty of Chemistry, Taras Shevchenko University of Kyiv, Kyiv, 01601, Ukraine
| | - Pavlo Virych
- Faculty of Chemistry, Taras Shevchenko University of Kyiv, Kyiv, 01601, Ukraine
| | - Vadym Pavlenko
- Faculty of Chemistry, Taras Shevchenko University of Kyiv, Kyiv, 01601, Ukraine
| | - Nataliya Kutsevol
- Faculty of Chemistry, Taras Shevchenko University of Kyiv, Kyiv, 01601, Ukraine
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Wu Z, Lin X, Teng J, Li M, Song J, Huang C, Wang R, Ying H, Zhang L, Zhu C. Recent Advances of Lignin Functionalization for High-Performance and Advanced Functional Rubber Composites. Biomacromolecules 2023; 24:4553-4567. [PMID: 37813827 DOI: 10.1021/acs.biomac.3c00606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
The biomass lignin is the only large-volume renewable feedstock that is composed of aromatics but has been largely underutilized and is sought for valorization as a value-added material. Recent research has highlighted lignin as a promising alternative to traditional petrol-based reinforcements and functional additives for rubber composites. This review summarized the recent advances in the functionalization of lignin for a variety of rubber composites, as well as the compounding techniques for effectively dispersing lignin within the rubber matrix. Significant progress has been achieved in the development of high-performance and advanced functional rubber/lignin composites through carefully designing the structure of lignin-based additives and the optimization of interfacial morphologies. This Review discussed the effect of lignin on composite properties, including mechanical reinforcement, dynamic properties, antiaging performance, and oil resistance, and also the advanced stimuli-responsive performance in detail. A critical analysis for the future development of rubber/lignin composites is presented as concluding remarks.
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Affiliation(s)
- Zhengzhe Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xiran Lin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jiye Teng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ming Li
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Junlong Song
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Caoxing Huang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Runguo Wang
- Center of Advanced Elastomer Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hanjie Ying
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Liqun Zhang
- Center of Advanced Elastomer Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Department of Emergent Elastomers, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Chenjie Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, China
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Bera A, Ghosh P, Ghosh S, Mukherjee A, De P. Antioxidant Polymers with Enhanced Neuroprotection Against Insulin Fibrillation. Macromol Biosci 2023; 23:e2300100. [PMID: 37092867 DOI: 10.1002/mabi.202300100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/10/2023] [Indexed: 04/25/2023]
Abstract
Lipoic acid (LA) and dihydrolipoic acid (DHLA) are well established antioxidants to scavenge reactive oxygen species (ROS). However, they are carboxylates with ≈4.7 pKa making them negatively charged at physiological pH (7.4) reducing their passive diffusion through cell membranes. LA is known to be capable of reducing protein fibrillation. Incorporation of LA and especially DHLA in polymer side chains are scarce. Herein, the first examples of the anti-amyloidogenic effect of LA and DHLA incorporated into the side-chain of a block copolymer with a water-soluble poly(polyethylene glycol methyl ether methacrylate) (PPEGMA) segment are presented. The resultant polymers show improved ROS scavenging activity and improved ability to reduce insulin fibrillation compared to free LA and DHLA. Furthermore, the resultant polymers are also capable of disintegrating preformed insulin firbrils. Interestingly, polymers with dihydro-lipoate moieties showed 93% free radical scavenging activity with 91% anti-fibrillating efficacies for insulin protein confirmed by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay and Thioflavin T (ThT) dye binding study, respectively. Further, the antioxidant polymers increase the cell viability against fibrillar insulin aggregates that may be involved in the etiology of several diseases. Overall, this work reveals that antioxidant polymer-based therapeutic agents can serve as a powerful modulation strategy for developing novel drugs in future against amyloid-related disorders.
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Affiliation(s)
- Avisek Bera
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
- Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
| | - Pooja Ghosh
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
- Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
| | - Shilpendu Ghosh
- Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
| | - Arindam Mukherjee
- Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
| | - Priyadarsi De
- Polymer Research Centre, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
- Centre for Advanced Functional Materials, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, West Bengal, 741246, India
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Du M, Cheng X, Qian L, Huo A, Chen J, Sun Y. Extraction, Physicochemical Properties, Functional Activities and Applications of Inulin Polysaccharide: a Review. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2023; 78:243-252. [PMID: 37097509 DOI: 10.1007/s11130-023-01066-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
Inulin is a naturally soluble dietary fiber that is widely distributed and primarily derived from plants. As a reserve biopolysaccharide in plants, inulin is considered an indigestible carbohydrate of fructan because of its unique β-(2,1)-glycosidic bond structure. Numerous recent animal and human experimental studies have shown that functional inulin possesses multiple bioactivities, including immunomodulatory, antioxidant, antitumor, hepatoprotective, hypoglycemic, and gastrointestinal protective activities. Due to its increasing popularity, people tend to consume foods containing inulin. Moreover, inulin holds promise as a bioactive compound for use in the development of various food products. Therefore, this paper provides a detailed review of the extraction method, physicochemical properties, functional activity, and application development of inulin polysaccharides, to provide a theoretical foundation for further advancements in the fields of preparation and application of functional foods.
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Affiliation(s)
- Mengxiang Du
- College of Agriculture, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Xueyan Cheng
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Lijuan Qian
- College of Agriculture, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Ayue Huo
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Jia Chen
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, 233100, Anhui, China
| | - Yujun Sun
- College of Life and Health Sciences, Anhui Science and Technology University, Fengyang, 233100, Anhui, China.
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Belyi VA, Kuzivanov IM, Fedorova IV, Shumova OA, Tropnikov EM, Istomina EI, Chukicheva IY, Kuchin AV. Tailoring Photoprotection of Polylactide with New Isobornyl Derivatives of Phenol and Aniline. Polymers (Basel) 2023; 15:polym15092141. [PMID: 37177288 PMCID: PMC10180735 DOI: 10.3390/polym15092141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/14/2023] [Accepted: 04/28/2023] [Indexed: 05/15/2023] Open
Abstract
This article is devoted to the development of new photostabilizers for polylactide (PLA), a polymer that is an environmentally friendly alternative to polymers and is based on fossil raw materials. We have elucidated the role of the reaction center of two potential PLA photoprotectors: N-isobornylaniline and 2-isobornylphenol, in reactions occurring in a polymer matrix under the action of UV-C radiation. PLA samples with the photostabilizers were irradiated under a wavelength of 253.7 nm for 4, 8 and 12 h. The effectiveness of the photostabilizers was evaluated based on FTIR spectrometric data, 1H and 13C NMR, scanning electron microscopy and simultaneous thermal analysis (TG-DSC). Both stabilizers led to the protection of ester bonds between monomer units of PLA. However, 2-isobornylphenol proved to be more effective at a concentration of 0.05 wt.%, while the optimal concentration of N-isobornylaniline was 0.5 wt.% by weight. TG-DSC showed that the addition of N-isobornylaniline led to an increase in PLA resistance to thermal decomposition; the temperature of the onset of weight loss increased by 2.8 °C at 0.05 wt.% and by 8.1 °C at 0.5 wt.% of N-isobornylaniline. The photoprotector 2-isobornylphenol, on the contrary, reduced the thermal stability of PLA.
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Affiliation(s)
- Vladimir A Belyi
- Institute of Chemistry of FRC Komi SC UB RAS, 167000 Syktyvkar, Russia
| | - Ivan M Kuzivanov
- Institute of Chemistry of FRC Komi SC UB RAS, 167000 Syktyvkar, Russia
| | - Irina V Fedorova
- Institute of Chemistry of FRC Komi SC UB RAS, 167000 Syktyvkar, Russia
| | - Olga A Shumova
- Institute of Chemistry of FRC Komi SC UB RAS, 167000 Syktyvkar, Russia
| | | | - Elena I Istomina
- Institute of Chemistry of FRC Komi SC UB RAS, 167000 Syktyvkar, Russia
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Bayer IS. Controlled Drug Release from Nanoengineered Polysaccharides. Pharmaceutics 2023; 15:pharmaceutics15051364. [PMID: 37242606 DOI: 10.3390/pharmaceutics15051364] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/18/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Polysaccharides are naturally occurring complex molecules with exceptional physicochemical properties and bioactivities. They originate from plant, animal, and microbial-based resources and processes and can be chemically modified. The biocompatibility and biodegradability of polysaccharides enable their increased use in nanoscale synthesis and engineering for drug encapsulation and release. This review focuses on sustained drug release studies from nanoscale polysaccharides in the fields of nanotechnology and biomedical sciences. Particular emphasis is placed on drug release kinetics and relevant mathematical models. An effective release model can be used to envision the behavior of specific nanoscale polysaccharide matrices and reduce impending experimental trial and error, saving time and resources. A robust model can also assist in translating from in vitro to in vivo experiments. The main aim of this review is to demonstrate that any study that establishes sustained release from nanoscale polysaccharide matrices should be accompanied by a detailed analysis of drug release kinetics by modeling since sustained release from polysaccharides not only involves diffusion and degradation but also surface erosion, complicated swelling dynamics, crosslinking, and drug-polymer interactions. As such, in the first part, we discuss the classification and role of polysaccharides in various applications and later elaborate on the specific pharmaceutical processes of polysaccharides in ionic gelling, stabilization, cross-linking, grafting, and encapsulation of drugs. We also document several drug release models applied to nanoscale hydrogels, nanofibers, and nanoparticles of polysaccharides and conclude that, at times, more than one model can accurately describe the sustained release profiles, indicating the existence of release mechanisms running in parallel. Finally, we conclude with the future opportunities and advanced applications of nanoengineered polysaccharides and their theranostic aptitudes for future clinical applications.
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Affiliation(s)
- Ilker S Bayer
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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Mavridi-Printezi A, Menichetti A, Mordini D, Amorati R, Montalti M. Recent Applications of Melanin-like Nanoparticles as Antioxidant Agents. Antioxidants (Basel) 2023; 12:antiox12040863. [PMID: 37107238 PMCID: PMC10135245 DOI: 10.3390/antiox12040863] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/24/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023] Open
Abstract
Nanosized antioxidants are highly advantageous in terms of versatility and pharmacokinetics, with respect to conventional molecular ones. Melanin-like materials, artificial species inspired by natural melanin, combine recognized antioxidant (AOX) activity with a unique versatility of preparation and modification. Due to this versatility and documented biocompatibility, artificial melanin has been incorporated into a variety of nanoparticles (NP) in order to give new platforms for nanomedicine with enhanced AOX activity. In this review article, we first discuss the chemical mechanisms behind the AOX activity of materials in the context of the inhibition of the radical chain reaction responsible for the peroxidation of biomolecules. We also focus briefly on the AOX properties of melanin-like NP, considering the effect of parameters such as size, preparation methods and surface functionalization on them. Then, we consider the most recent and relevant applications of AOX melanin-like NPs that are able to counteract ferroptosis and be involved in the treatment of important diseases that affect, e.g., the cardiovascular and nervous systems, as well as the kidneys, liver and articulations. A specific section will be dedicated to cancer treatment, since the role of melanin in this context is still very debated. Finally, we propose future strategies in AOX development for a better chemical understanding of melanin-like materials. In particular, the composition and structure of these materials are still debated, and they present a high level of variability. Thus, a better understanding of the mechanism behind the interaction of melanin-like nanostructures with different radicals and highly reactive species would be highly advantageous for the design of more effective and specific AOX nano-agents.
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Affiliation(s)
| | - Arianna Menichetti
- Department of Chemistry «Giacomo Ciamician», University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Dario Mordini
- Department of Chemistry «Giacomo Ciamician», University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Riccardo Amorati
- Department of Chemistry «Giacomo Ciamician», University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Marco Montalti
- Department of Chemistry «Giacomo Ciamician», University of Bologna, Via Selmi 2, 40126 Bologna, Italy
- Tecnopolo di Rimini, Via Dario Campana 71, 47921 Rimini, Italy
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Verebélyi K, Szabó Á, Réti Z, Szarka G, Villányi Á, Iván B. Highly Efficient Cationic Polymerization of β-Pinene, a Bio-Based, Renewable Olefin, with TiCl4 Catalyst from Cryogenic to Energy-Saving Room Temperature Conditions. Int J Mol Sci 2023; 24:ijms24065170. [PMID: 36982242 PMCID: PMC10048798 DOI: 10.3390/ijms24065170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/28/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
Polymers based on renewable monomers are projected to have a significant role in the sustainable economy, even in the near future. Undoubtedly, the cationically polymerizable β-pinene, available in considerable quantities, is one of the most promising bio-based monomers for such purposes. In the course of our systematic investigations related to the catalytic activity of TiCl4 on the cationic polymerization of this natural olefin, it was found that the 2-chloro-2,4,4-trimethylpentane (TMPCl)/TiCl4/N,N,N′,N′-tetramethylethylenediamine (TMEDA) initiating system induced efficient polymerization in dichloromethane (DCM)/hexane (Hx) mixture at both −78 °C and room temperature. At −78 °C, 100% monomer conversion was observed within 40 min, resulting in poly(β-pinene) with relatively high Mn (5500 g/mol). The molecular weight distributions (MWD) were uniformly shifted towards higher molecular weights (MW) in these polymerizations as long as monomer was present in the reaction mixture. However, chain–chain coupling took place after reaching 100% conversion, i.e., under monomer-starved conditions, resulting in considerable molecular weight increase and MWD broadening at −78 °C. At room temperature, the polymerization rate was lower, but chain coupling did not occur. The addition of a second feed of monomer in the polymerization system led to increasing conversion and polymers with higher MWs at both temperatures. 1H NMR spectra of the formed polymers indicated high in-chain double-bond contents. To overcome the polarity decrease by raising the temperature, polymerizations were also carried out in pure DCM at room temperature and at −20 °C. In both cases, rapid polymerization occurred with nearly quantitative yields, leading to poly(β-pinene)s with Mns in the range of 2000 g/mol. Strikingly, polymerization by TiCl4 alone, i.e., without any additive, also occurred with near complete conversion at room temperature within a few minutes, attributed to initiation by adventitious protic impurities. These results convincingly prove that highly efficient carbocationic polymerization of the renewable β-pinene can be accomplished with TiCl4 as catalyst under both cryogenic conditions, applied widely for carbocationic polymerizations, and the environmentally benign, energy-saving room temperature, i.e., without any additive and cooling or heating. These findings enable TiCl4-catalyzed eco-friendly manufacturing of poly(β-pinene)s, which can be utilized in various applications, and in addition, subsequent derivatizations could result in a range of high-added-value products.
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11
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Shah M, Khan F, Ullah S, Mohanta TK, Khan A, Zainab R, Rafiq N, Ara H, Alam T, Rehman NU, Al-Harrasi A. GC-MS Profiling and Biomedical Applications of Essential Oil of Euphorbia larica Boiss.: A New Report. Antioxidants (Basel) 2023; 12:antiox12030662. [PMID: 36978910 PMCID: PMC10045896 DOI: 10.3390/antiox12030662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/19/2023] [Accepted: 03/01/2023] [Indexed: 03/10/2023] Open
Abstract
The present study explored Euphorbia larica essential oil (ELEO) constituents for the first time, obtained via hydro-distillation by means of Gas Chromatography-Mass Spectrometry (GC-MS) profiling. The essential oil was screened in vitro against breast cancer cells, normal cell lines, α-glucosidase, carbonic anhydrase-II (CA-II), free radical scavenging and in vivo analgesic and anti-inflammatory capabilities. The GC-MS screening revealed that the ELEO comprises sixty compounds (95.25%) with the dominant constituents being camphene (16.41%), thunbergol (15.33%), limonene (4.29%), eremophilene (3.77%), and β-eudesmol (3.51%). A promising antidiabetic capacity was noticed with an IC50 of 9.63 ± 0.22 μg/mL by the ELEO as equated to acarbose with an IC50 = 377.71 ± 1.34 μg/mL, while a 162.82 ± 1.24 μg/mL inhibition was observed against CA-II. Regarding breast cancer, the ELEO offered considerable cytotoxic capabilities against the triple-negative breast cancer (MDA-MB-231) cell lines, having an IC50 = 183.8 ± 1.6 μg/mL. Furthermore, the ELEO was also tested with the human breast epithelial (MCF-10A) cell line, and the findings also presumed that the ELEO did not produce any damage to the tested normal cell lines. The ELEO was effective against the Gram-positive bacteria and offered a 19.8 ± 0.02 mm zone of inhibition (ZOI) against B. atrophaeus. At the same time, the maximum resistance with 18.03 ± 0.01 mm ZOI against the fungal strain Aspergillus parasiticus was observed among the tested fungal strains. An appreciable free radical significance was observed via the DPPH assay with an IC50 = 133.53 ± 0.19 µg/mL as equated to the ABTS assay having an IC50 = 154.93 ± 0.17 µg/mL. The ELEO also offered a substantial analgesic capacity and produced 58.33% inhibition in comparison with aspirin, a 68.47% decrease in writhes, and an anti-inflammatory capability of 65.54% inhibition, as equated to the standard diclofenac sodium having 73.64% inhibition. Hence, it was concluded that the ELEO might be a natural source for the treatment of diabetes mellitus, breast cancer, analgesic, inflammatory, and antimicrobial-related diseases. Moreover, additional phytochemical and pharmacological studies are needed to isolate responsible chemical ingredients to formulate new drugs for the examined activities.
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Affiliation(s)
- Muddaser Shah
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
- Department of Botany, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Faizullah Khan
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Saeed Ullah
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
| | - Tapan Kumar Mohanta
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
| | - Rimsha Zainab
- Department of Botany, Women University Swabi, Swabi 23430, Pakistan
| | - Naseem Rafiq
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Hussan Ara
- Department of Botany, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Tanveer Alam
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
| | - Najeeb Ur Rehman
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
- Correspondence: (N.U.R.); (A.A.-H.)
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, PC 616, Birkat Al Mauz, Nizwa P.O. Box 33, Oman
- Correspondence: (N.U.R.); (A.A.-H.)
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12
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Cremer J, Kaltschmidt BP, Kiel A, Eberhard J, Schmidt S, Kaltschmidt C, Kaltschmidt B, Hütten A, Anselmetti D. Aging of Industrial Polypropylene Surfaces in Detergent Solution and Its Consequences for Biofilm Formation. Polymers (Basel) 2023; 15:polym15051247. [PMID: 36904487 PMCID: PMC10006934 DOI: 10.3390/polym15051247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/05/2023] Open
Abstract
The performance of plastic components in water-bearing parts of industrial and household appliances, often in the presence of harsh environments and elevated temperatures, critically relies on the mechanical and thermal polymer stability. In this light, the precise knowledge of aging properties of polymers formulated with dedicated antiaging additive packages as well as various fillers is crucial for long-time device warranty. We investigated and analysed the time-dependent, polymer-liquid interface aging of different industrial performance polypropylene samples in aqueous detergent solution at high temperatures (95 °C). Special emphasis was put on the disadvantageous process of consecutive biofilm formation that often follows surface transformation and degradation. Atomic force microscopy, scanning electron microscopy, and infrared spectroscopy were used to monitor and analyse the surface aging process. Additionally, bacterial adhesion and biofilm formation was characterised by colony forming unit assays. One of the key findings is the observation of crystalline, fibre-like growth of ethylene bis stearamide (EBS) on the surface during the aging process. EBS is a widely used process aid and lubricant enabling the proper demoulding of injection moulding plastic parts. The aging-induced surface-covering EBS layers changed the surface morphology and promoted bacterial adhesion as well as biofilm formation of Pseudomonas aeruginosa.
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Affiliation(s)
- Julian Cremer
- Department of Experimental Biophysics & Applied Nanoscience, Faculty of Physics, Bielefeld University, 33615 Bielefeld, Germany
- Correspondence:
| | - Bernhard P. Kaltschmidt
- Department of Thin Films and Physics of Nanostructures, Center of Spinelectronic Materials and Devices, Faculty of Physics, Bielefeld University, 33615 Bielefeld, Germany
| | - Annika Kiel
- Department of Cell Biology, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | | | | | - Christian Kaltschmidt
- Department of Cell Biology, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Barbara Kaltschmidt
- Department of Cell Biology, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Andreas Hütten
- Department of Thin Films and Physics of Nanostructures, Center of Spinelectronic Materials and Devices, Faculty of Physics, Bielefeld University, 33615 Bielefeld, Germany
| | - Dario Anselmetti
- Department of Experimental Biophysics & Applied Nanoscience, Faculty of Physics, Bielefeld University, 33615 Bielefeld, Germany
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13
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Li D, Li J, Wang S, Wang Q, Teng W. Dually Crosslinked Copper-Poly(tannic acid) Nanoparticles with Microenvironment-Responsiveness for Infected Wound Treatment. Adv Healthc Mater 2023:e2203063. [PMID: 36842067 DOI: 10.1002/adhm.202203063] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Indexed: 02/27/2023]
Abstract
Reducing the burden of death due to wound infection is an urgent global public health priority. Metal-phenolic networks (MPNs) have received widespread attention in antimicrobial infections due to their facile synthesis process, excellent biocompatibility, and antimicrobial properties brought about by polyphenols and metal ions. However, typical therapeutic MPNs show rapid release of metal ions due to their poor solution stability, impeding long-acting efficacy in multiple wound healing stages. To address these issues, copper-poly (tannic acid) nanoparticles (Cu-PTA NPs): robust (dually crosslinked), microenvironment-responsive, antibacterial, antioxidative, and anti-inflammatory are prepared, which hierarchically modulate the infected wound healing process. Covalently polymerized via phenol-formaldehyde condensation and crosslinked with bioactive Cu2+ , reactive polyphenols are preserved, and Cu2+ is efficiently entrapped in the PTA scaffold. The proposed strategy relieves the systemic toxicity, and only high reactive oxygen species (ROS)level as stimuli can "turn on" the catalytic activity of Cu2+ to implement antibacterial therapy specifically in an infected wound. Systematic tissue regeneration assessment on the infected full-thickness skin wounds of rats demonstrates enhanced wound healing rate. Cu-PTA NPs enables the direct application in infected wound and exertion of long-acting healing efficacy. This synergetic therapy strategy will pave the way for more complicated infections and inflammatory diseases.
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Affiliation(s)
- Dongying Li
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, P. R. China.,Laboratory of Biomaterials, Key Laboratory on Assisted Circulation, Ministry of Health, Cardiovascular Division, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Jiarun Li
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, P. R. China.,Laboratory of Biomaterials, Key Laboratory on Assisted Circulation, Ministry of Health, Cardiovascular Division, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Siwei Wang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, P. R. China.,Laboratory of Biomaterials, Key Laboratory on Assisted Circulation, Ministry of Health, Cardiovascular Division, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Qinmei Wang
- Laboratory of Biomaterials, Key Laboratory on Assisted Circulation, Ministry of Health, Cardiovascular Division, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Wei Teng
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Institute of Stomatological Research, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, 510055, P. R. China
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14
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Kawasaki R, Kawamura S, Kodama T, Yamana K, Maeda A, Yimiti D, Miyaki S, Hino S, Ozawa N, Nishimura T, Kawamoto S, Ikeda A. Development of a Water-Dispersible Supramolecular Complex of Polyphenol with Polypeptides for Attenuation of the Allergic Response using a Mechanochemical Strategy. Macromol Biosci 2023; 23:e2200462. [PMID: 36640295 DOI: 10.1002/mabi.202200462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/22/2022] [Indexed: 01/15/2023]
Abstract
The prevalence of allergic disorders has increased worldwide in recent decades. Polyphenols, including resveratrol and curcumin, are posited to have potential as therapeutic agents for allergy; however, their use has been limited by poor water solubility. Accordingly, a highly concentrated, water dispersible, supramolecular complexes of polyphenols with polypeptides (poly-L-lysine, poly-γ-glutamic acid) and gelatin using high-speed vibration milling are developed. The complex exhibited resistance to photobleaching and thermal radiation. Treatment of a rat basophilic leukemia cell line (RBL-2H3) with polypeptide complexes containing resveratrol is suppressed allergic responses in vitro. Moreover, aerosolized administration of polypeptide complexes is demonstrated excellent bioavailability and inhibition of immediate hypersensitivity reactions in ear tissue in vivo. Furthermore, the method avoids the use of organic solvent and therefore reduces undesirable biological responses.
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Affiliation(s)
- Riku Kawasaki
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Shogo Kawamura
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Tomoki Kodama
- Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530, Japan
| | - Keita Yamana
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
| | - Akira Maeda
- Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530, Japan
| | - Dilimulati Yimiti
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, 734-8551, Japan
| | - Shigeru Miyaki
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, 734-8551, Japan.,Medical Center for Translational and Clinical Research, Hiroshima University Hospital, 1-2-3 Kasumi Minami-ku, Hiroshima, 734-8551, Japan
| | - Shodai Hino
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, AIST), 1-8-31 Midorigaoka, Ikeda, Japan
| | - Naoki Ozawa
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, 386-8567, Japan
| | - Tomoki Nishimura
- Department of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda, 386-8567, Japan
| | - Seiji Kawamoto
- Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530, Japan.,Hiroshima Research Center for Healthy Aging (HiHA), Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530, Japan
| | - Atsushi Ikeda
- Program of Applied Chemistry, Graduate School of Advanced Science and Engineering, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527, Japan
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15
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Zaharescu T, Banciu C. Packaging Materials Based on Styrene-Isoprene-Styrene Triblock Copolymer Modified with Graphene. Polymers (Basel) 2023; 15:polym15020353. [PMID: 36679234 PMCID: PMC9863306 DOI: 10.3390/polym15020353] [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: 11/29/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 01/12/2023] Open
Abstract
This study presents the improved stabilization effects of graphene on a polymer substrate, namely a styrene-isoprene-styrene triblock copolymer (SIS) which creates opportunities for long-term applications and radiation processing. The added graphene has a remarkable activity on the protection of polymer against their oxidation due to the penetration of free macroradical fragments into the free interlayer space. The chemiluminescence procedure used for the evaluation of the progress of oxidation reveals the delaying effect of oxidative degradation by the doubling extension of oxidation induction time, when the material formulation containing graphene is oxidized at 130 °C. The pristine polymer that is thermally aged requires an activation energy of 142 kJ mol-1, while the modified material needs 148, 158 and 169 kJ mol-1, for the oxidative degradation in the presence of 1, 2 and, respectively, 3 wt% of graphene. The contribution of graphene content (1 wt%) on the stability improvement of SIS is demonstrated by the increase of onset oxidation temperature from 190 °C for neat polymer to 196 °C in the presence of graphene and to 205 °C for the polymer stabilized with graphene and rosemary extract. The addition of graphene into the polymer formulations is a successful method for enlarging durability instead of the modification of receipt with synthesis antioxidants. The presumable applications of these studied materials cover the areas of medical wear, food packaging, commodities, sealing gaskets and others that may also be included through the products for nuclear power plants.
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16
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Strengthening of polyamide 6 and isosorbide-containing copolyester immiscible blends by in-situ reactive compatibilization. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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High throughput preparation of antioxidant polysaccharide-based polymers with UV-resistant and antibacterial performance. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Stepping Further from Coupling Tools: Development of Functional Polymers via the Biginelli Reaction. Molecules 2022; 27:molecules27227886. [PMID: 36431987 PMCID: PMC9698737 DOI: 10.3390/molecules27227886] [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: 10/26/2022] [Revised: 11/09/2022] [Accepted: 11/09/2022] [Indexed: 11/17/2022] Open
Abstract
Multicomponent reactions (MCRs) have been used to prepare polymers with appealing functions. The Biginelli reaction, one of the oldest and most famous MCRs, has sparked new scientific discoveries in polymer chemistry since 2013. Recent years have seen the Biginelli reaction stepping further from simple coupling tools; for example, the functions of the Biginelli product 3,4-dihydropyrimidin-2(1H)-(thi)ones (DHPM(T)) have been gradually exploited to develop new functional polymers. In this mini-review, we mainly summarize the recent progress of using the Biginelli reaction to identify polymers for biomedical applications. These polymers have been documented as antioxidants, anticancer agents, and bio-imaging probes. Moreover, we also provide a brief introduction to some emerging applications of the Biginelli reaction in materials and polymer science. Finally, we present our perspectives for the further development of the Biginelli reaction in polymer chemistry.
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19
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Daniels R, Morato EO, Yassin OA, Mao J, Mutlu Z, Jain M, Valenti J, Cakmak M, Nair LS, Sotzing GA. Poly(cannabinoid)s: Hemp-Derived Biocompatible Thermoplastic Polyesters with Inherent Antioxidant Properties. ACS APPLIED MATERIALS & INTERFACES 2022; 14:42804-42811. [PMID: 36112124 DOI: 10.1021/acsami.2c05556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The legalization of hemp cultivation in the United States has caused the price of hemp-derived cannabinoids to decrease 10-fold within 2 years. Cannabidiol (CBD), one of many naturally occurring diols found in hemp, can be purified in high yield for low cost, making it an interesting candidate for polymer feedstock. In this study, two polyesters were synthesized from the condensation of either CBD or cannabigerol (CBG) with adipoyl chloride. Poly(CBD-Adipate) was cast into free-standing films and subjected to thermal, mechanical, and biological characterization. Poly(CBD-Adipate) films exhibited a lack of cytotoxicity toward adipose-derived stem cells while displaying an inherent antioxidant activity compared to poly(lactide) films. Additionally, this material was found to be semi-crystalline and able to be melt-processed into a plastic hemp leaf using a silicone baking mold.
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Affiliation(s)
- Robert Daniels
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Erick Orozco Morato
- The Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
- Department of Skeletal Biology and Regeneration, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
| | - Omer A Yassin
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jiahao Mao
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47906, United States
| | - Zeynep Mutlu
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47906, United States
| | - Mayank Jain
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47906, United States
| | - Joseph Valenti
- College of Agriculture, Health, and Natural Resources, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Mukerrem Cakmak
- School of Materials Engineering, Purdue University, West Lafayette, Indiana 47906, United States
| | - Lakshmi S Nair
- The Connecticut Convergence Institute for Translation in Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
- Department of Skeletal Biology and Regeneration, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, Connecticut 06030, United States
- Department of Biomedical Engineering, Department of Material Science and Engineering, Institute of Material Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Gregory A Sotzing
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
- Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
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20
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Porphyrin@Lignin nanoparticles: Reusable photocatalysts for effective aqueous degradation of antibiotics. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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da Rosa MM, de Amorim LC, Alves JVDO, Aguiar IFDS, Oliveira FGDS, da Silva MV, dos Santos MTC. The promising role of natural products in Alzheimer's disease. BRAIN DISORDERS 2022. [DOI: 10.1016/j.dscb.2022.100049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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22
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Thbayh DK, Reizer E, Kahaly MU, Viskolcz B, Fiser B. Antioxidant Potential of Santowhite as Synthetic and Ascorbic Acid as Natural Polymer Additives. Polymers (Basel) 2022; 14:polym14173518. [PMID: 36080595 PMCID: PMC9460313 DOI: 10.3390/polym14173518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
A wide variety of additives are used to improve specific characteristics of the final polymeric product. Antioxidant additives (AAs) can prevent oxidative stress and thus the damage of polymeric materials. In this work, the antioxidant potential and thus the applicability of Santowhite (SW) as synthetic and ascorbic acid (Asc) as natural AAs were explored by using computational tools. Two density functional theory (DFT) methods, M05-2X and M06-2X, have been applied in combination with the 6-311++G(2d,2p) basis set in gas phase. Three antioxidant mechanisms have been considered: hydrogen atom transfer (HAT), single electron transfer-proton transfer (SET-PT), and sequential proton loss electron transfer (SPLET). Bond dissociation enthalpy (BDE), ionization potential (IP), proton dissociation enthalpy (PDE), proton affinity (PA), and electron transfer enthalpy (ETE) have been computed for each potential hydrogen donor site. The results indicate that the antioxidant potential of Asc is higher than SW. Furthermore, some of the C-H bonds, depending on their position in the structures, are potent radical scavengers, but O-H groups are more prone to donate H-atoms to free radicals. Nonetheless, both additives can be potentially applied to safeguard common polymers and prohibit oxidative stress-induced material deterioration.
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Affiliation(s)
- Dalal K. Thbayh
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary
- Polymer Research Center, University of Basrah, 61004 Basrah, Iraq
- Higher Education and Industrial Cooperation Centre, University of Miskolc, 3515 Miskolc, Hungary
| | - Edina Reizer
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary
| | - Mousumi U. Kahaly
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3, 6728 Szeged, Hungary
- Institute of Physics, University of Szeged, Dóm tér 9, 6720 Szeged, Hungary
| | - Béla Viskolcz
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary
- Higher Education and Industrial Cooperation Centre, University of Miskolc, 3515 Miskolc, Hungary
| | - Béla Fiser
- Institute of Chemistry, University of Miskolc, 3515 Miskolc, Hungary
- Higher Education and Industrial Cooperation Centre, University of Miskolc, 3515 Miskolc, Hungary
- Ferenc Rakoczi II Transcarpathian Hungarian College of Higher Education, 90200 Beregszász, Ukraine
- Correspondence:
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23
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Lupu (Luchian) AM, Mariş M, Zaharescu T, Marinescu VE, Iovu H. Stability Study of the Irradiated Poly(lactic acid)/Styrene Isoprene Styrene Reinforced with Silica Nanoparticles. MATERIALS 2022; 15:ma15145080. [PMID: 35888545 PMCID: PMC9319368 DOI: 10.3390/ma15145080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
In this paper, the stability improvement of poly(lactic acid) (PLA)/styrene-isoprene block copolymer (SIS) loaded with silica nanoparticles is characterized. The protection efficiency in the material of thermal stability is mainly studied by means of high accurate isothermal and nonisothermal chemiluminescence procedures. The oxidation induction times obtained in the isothermal CL determinations increase from 45 min to 312 min as the polymer is free of silica or the filler loading is about 10%, respectively. The nonisothermal measurements reveal the values of onset oxidation temperatures with about 15% when the concentration of SiO2 particles is enhanced from none to 10%. The curing assay and Charlesby–Pinner representation as well as the modifications that occurred in the FTIR carbonyl band at 1745 cm−1 are appropriate proofs for the delay of oxidation in hybrid samples. The improved efficiency of silica during the accelerated degradation of PLA/SIS 30/n-SiO2 composites is demonstrated by means of the increased values of activation energy in correlation with the augmentation of silica loading. While the pristine material is modified by the addition of 10% silica nanoparticles, the activation energy grows from 55 kJ mol−1 to 74 kJ mol−1 for nonirradiated samples and from 47 kJ mol−1 to 76 kJ mol−1 for γ-processed material at 25 kGy. The stabilizer features are associated with silica nanoparticles due to the protection of fragments generated by the scission of hydrocarbon structure of SIS, the minor component, whose degradation fragments are early converted into hydroperoxides rather than influencing depolymerization in the PLA phase. The reduction of the transmission values concerning the growing reinforcement is evidence of the capacity of SiO2 to minimize the changes in polymers subjected to high energy sterilization. The silica loading of 10 wt% may be considered a proper solution for attaining an extended lifespan under the accelerated degradation caused by the intense transfer of energy, such as radiation processing on the polymer hybrid.
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Affiliation(s)
- Ana Maria Lupu (Luchian)
- Advanced Polymer Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania; (A.M.L.); (H.I.)
- Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), 077125 Magurele, Romania
| | - Marius Mariş
- Dental Medicine Faculty, University Titu Maiorescu, 22 Dâmbovnicului Tineretului St., 040441 Bucharest, Romania
- Correspondence: (M.M.); (T.Z.)
| | - Traian Zaharescu
- INCDIE ICPE CA, Radiochemistry Center, 313 Splaiul Unirii, 030138 Bucharest, Romania;
- Correspondence: (M.M.); (T.Z.)
| | | | - Horia Iovu
- Advanced Polymer Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania; (A.M.L.); (H.I.)
- Academy of Romanian Scientists, 050094 Bucharest, Romania
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24
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On the Use of Oxidation Induction Time as a Kinetic Parameter for Condition Monitoring and Lifetime Evaluation under Ionizing Radiation Environments. Polymers (Basel) 2022; 14:polym14122357. [PMID: 35745933 PMCID: PMC9229975 DOI: 10.3390/polym14122357] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
The durability of polymeric materials is closely linked to their degradation under specific operating conditions when different stressors-general or specific, such as high temperature, sunlight or ionizing radiation, solvents, or mechanical stresses-act simultaneously, causing degradation. In the case of electrical cables, the durability of the electrically insulating materials used in their construction is an important parameter to ensure their operational security. In this work, we studied the degradation state of various types of electrical insulating materials from cables used in particle acceleration systems under European Organization for Nuclear Research (CERN) conditions (e.g., Super Proton Synchrotron, SPS) as a function of time and irradiation dose. A simple kinetic model was proposed based on the exponential decrease in the antioxidant amount in polymeric insulations. The onset oxidation time (OIT) values, used as an indicator of antioxidant concentration, were obtained from isothermal differential scanning calorimetry (DSC) and chemiluminescence (CL) measurements. Fourier transform infrared (FTIR) measurements were used to assess the degradation state and identify polymeric materials. The practical applicability of such a model in diagnosing degradation and in the subsequent evaluation of the remaining service life is of interest, as it can be adapted to a broad range of operating conditions and materials.
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25
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Application of Sulfur and Peroxide Curing Systems for Cross-Linking of Rubber Composites Filled with Calcium Lignosulfonate. Polymers (Basel) 2022; 14:polym14091921. [PMID: 35567090 PMCID: PMC9103945 DOI: 10.3390/polym14091921] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 04/29/2022] [Accepted: 05/07/2022] [Indexed: 01/27/2023] Open
Abstract
Calcium lignosulfonate in different loadings was applied to the rubber matrix based on EPDM. A sulfur curing system, organic peroxide, and a combination of organic peroxide with two coagent types were used for cross-linking of rubber compounds. The work was focused on the investigation of filler content and curing system composition in the curing process, cross-link density, morphology, and physical–mechanical properties of composites. The achieved results demonstrated that the curing parameters of rubber compounds cured with the sulfur system were significantly different from those cured with peroxide systems. There was also an observed different influence of curing systems composition on cross link density, though in all cases, the degree of cross-linking showed a decreasing trend with increasing content of lignosulfonate. The tensile strength of the composites cured with sulfur system and organic peroxide was comparable, regardless of lignosulfonate loading. This points to the application of both curing systems in cross-linking of rubber compounds with biopolymer filler. However, the introduction of coagents in peroxide vulcanization led to the improvement of adhesion and compatibility between the rubber and the filler on the filler–rubber interface. This subsequently resulted in the improvement of the tensile characteristics of composites. The introduction of organic peroxide in combination with coagent seems to be a very simple and efficient way for the preparation of biopolymer-filled composites with applicable physical–mechanical properties.
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26
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Encapsulation of Alpha-Lipoic Acid in Functional Hybrid Liposomes: Promising Tool for the Reduction of Cisplatin-Induced Ototoxicity. Pharmaceuticals (Basel) 2022; 15:ph15040394. [PMID: 35455391 PMCID: PMC9030957 DOI: 10.3390/ph15040394] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/11/2022] [Accepted: 03/23/2022] [Indexed: 01/27/2023] Open
Abstract
In this study, in order to address the drawback of cisplatin (CDDP)-induced ototoxicity, we propose a straightforward strategy based on the delivery of a sulfur-based antioxidant, such as lipoic acid (LA), to HEI-OC1 cells. To this aim, hybrid liposomes (LA@PCGC) with a spherical shape and a mean diameter of 25 nm were obtained by direct sonication of LA, phosphatidylcholine and a gelatin-curcumin conjugate in a physiological buffer. LA@PCGC were found to be stable over time, were quickly (i.e., by 1 h) taken up by HEI-OC1 cells, and guaranteed strong retention of the bioactive molecule, since LA release was less than 20%, even after 100 h. Cell viability studies showed the efficiency of LA@PCGC for stabilizing the protective activity of LA. Curcumin residues within the functional liposomes were indeed able to maintain the biological activity of LA, significantly improving (up to 2.19-fold) the viability of HEI-OC1 cells treated with 5 μM CDDP. Finally, LA@PCGC was incorporated within an alginate-based injectable hydrogel carrier to create a formulation with physical chemical features suitable for potential ear applications.
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27
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Patil P, Killedar S. Improving gallic acid and quercetin bioavailability by polymeric nanoparticle formulation. Drug Dev Ind Pharm 2021; 47:1656-1663. [PMID: 35179095 DOI: 10.1080/03639045.2022.2043353] [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] [Indexed: 12/30/2022]
Abstract
The anticancer activity and pharmacokinetic properties of encapsulated polyherbal nanoparticles (gallic acid (GA) and quercetin nanocomposite) and polyherbal extract (amla and pomegranate fruit peels) in normal and DMH-induced colorectal cancer in rats were examined in this work. In normal and DMH-induced rats, a pharmacokinetic study demonstrated that polyherbal nanoparticles had a typical sustained release profile with a fourfold increase in bioavailability when compared to polyherbal extract. Based on serum-concentration profiles of polyherbal nanoparticles and polyherbal extract following oral administration, the pharmacokinetic parameters for polyherbal nanoparticles and polyherbal extract were established using a single compartmental approach. This research suggests that encapsulating GA and quercetin in polymeric nanoparticles improves their oral bioavailability and anti-colon cancer efficacy. Polymeric nanoparticles could be a novel therapeutic possibility for carcinogenesis prevention.
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Affiliation(s)
- Poounima Patil
- Bharati Vidyapeeth College of Pharmacy, Kolhapur, India.,Ashokrao Mane College of Pharmacy, Peth-Vadgaon, India
| | - Suresh Killedar
- Shree Sant Gajanan Maharaj College of Pharmacy, Gadhinglaj, India
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