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Phillips M, Tronci G, Pask CM, Russell SJ. Nonwoven Reinforced Photocurable Poly(glycerol sebacate)-Based Hydrogels. Polymers (Basel) 2024; 16:869. [PMID: 38611127 PMCID: PMC11013675 DOI: 10.3390/polym16070869] [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: 02/16/2024] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 04/14/2024] Open
Abstract
Implantable hydrogels should ideally possess mechanical properties matched to the surrounding tissues to enable adequate mechanical function while regeneration occurs. This can be challenging, especially when degradable systems with a high water content and hydrolysable chemical bonds are required in anatomical sites under constant mechanical stimulation, e.g., a foot ulcer cavity. In these circumstances, the design of hydrogel composites is a promising strategy for providing controlled structural features and macroscopic properties over time. To explore this strategy, the synthesis of a new photocurable elastomeric polymer, poly(glycerol-co-sebacic acid-co-lactic acid-co-polyethylene glycol) acrylate (PGSLPA), is investigated, along with its processing into UV-cured hydrogels, electrospun nonwovens and fibre-reinforced variants, without the need for a high temperature curing step or the use of hazardous solvents. The mechanical properties of bioresorbable PGSLPA hydrogels were studied with and without electrospun nonwoven reinforcement and with varied layered configurations, aiming to determine the effects of the microstructure on the bulk compressive strength and elasticity. The nonwoven reinforced PGSLPA hydrogels exhibited a 60% increase in compressive strength and an 80% increase in elastic moduli compared to the fibre-free PGSLPA samples. The mechanical properties of the fibre-reinforced hydrogels could also be modulated by altering the layering arrangement of the nonwoven and hydrogel phase. The nanofibre-reinforced PGSLPA hydrogels also exhibited good elastic recovery, as evidenced by the hysteresis in compression fatigue stress-strain evaluations showing a return to the original dimensions.
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Affiliation(s)
- Michael Phillips
- Clothworkers’ Centre for Textile Materials Innovation for Healthcare, Leeds Institute of Textiles & Colour, School of Design, University of Leeds, Leeds LS2 9JT, UK (G.T.)
| | - Giuseppe Tronci
- Clothworkers’ Centre for Textile Materials Innovation for Healthcare, Leeds Institute of Textiles & Colour, School of Design, University of Leeds, Leeds LS2 9JT, UK (G.T.)
| | | | - Stephen J. Russell
- Clothworkers’ Centre for Textile Materials Innovation for Healthcare, Leeds Institute of Textiles & Colour, School of Design, University of Leeds, Leeds LS2 9JT, UK (G.T.)
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2
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Kauser A, Parisini E, Suarato G, Castagna R. Light-Based Anti-Biofilm and Antibacterial Strategies. Pharmaceutics 2023; 15:2106. [PMID: 37631320 PMCID: PMC10457815 DOI: 10.3390/pharmaceutics15082106] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/29/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
Biofilm formation and antimicrobial resistance pose significant challenges not only in clinical settings (i.e., implant-associated infections, endocarditis, and urinary tract infections) but also in industrial settings and in the environment, where the spreading of antibiotic-resistant bacteria is on the rise. Indeed, developing effective strategies to prevent biofilm formation and treat infections will be one of the major global challenges in the next few years. As traditional pharmacological treatments are becoming inadequate to curb this problem, a constant commitment to the exploration of novel therapeutic strategies is necessary. Light-triggered therapies have emerged as promising alternatives to traditional approaches due to their non-invasive nature, precise spatial and temporal control, and potential multifunctional properties. Here, we provide a comprehensive overview of the different biofilm formation stages and the molecular mechanism of biofilm disruption, with a major focus on the quorum sensing machinery. Moreover, we highlight the principal guidelines for the development of light-responsive materials and photosensitive compounds. The synergistic effects of combining light-triggered therapies with conventional treatments are also discussed. Through elegant molecular and material design solutions, remarkable results have been achieved in the fight against biofilm formation and antibacterial resistance. However, further research and development in this field are essential to optimize therapeutic strategies and translate them into clinical and industrial applications, ultimately addressing the global challenges posed by biofilm and antimicrobial resistance.
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Affiliation(s)
- Ambreen Kauser
- Department of Biotechnology, Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia; (A.K.); (E.P.)
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, Paula Valdena 3, LV-1048 Riga, Latvia
| | - Emilio Parisini
- Department of Biotechnology, Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia; (A.K.); (E.P.)
- Department of Chemistry “G. Ciamician”, University of Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Giulia Suarato
- Istituto di Elettronica e di Ingegneria dell’Informazione e delle Telecomunicazioni, Consiglio Nazionale delle Ricerche, CNR-IEIIT, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Rossella Castagna
- Department of Biotechnology, Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia; (A.K.); (E.P.)
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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Caracciolo PC, Abraham GA, Battaglia ES, Bongiovanni Abel S. Recent Progress and Trends in the Development of Electrospun and 3D Printed Polymeric-Based Materials to Overcome Antimicrobial Resistance (AMR). Pharmaceutics 2023; 15:1964. [PMID: 37514150 PMCID: PMC10385409 DOI: 10.3390/pharmaceutics15071964] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/11/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Antimicrobial resistance (AMR) developed by microorganisms is considered one of the most critical public health issues worldwide. This problem is affecting the lives of millions of people and needs to be addressed promptly. Mainly, antibiotics are the substances that contribute to AMR in various strains of bacteria and other microorganisms, leading to infectious diseases that cannot be effectively treated. To avoid the use of antibiotics and similar drugs, several approaches have gained attention in the fields of materials science and engineering as well as pharmaceutics over the past five years. Our focus lies on the design and manufacture of polymeric-based materials capable of incorporating antimicrobial agents excluding the aforementioned substances. In this sense, two of the emerging techniques for materials fabrication, namely, electrospinning and 3D printing, have gained significant attraction. In this article, we provide a summary of the most important findings that contribute to the development of antimicrobial systems using these technologies to incorporate various types of nanomaterials, organic molecules, or natural compounds with the required property. Furthermore, we discuss and consider the challenges that lie ahead in this research field for the coming years.
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Affiliation(s)
- Pablo C Caracciolo
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Gustavo A Abraham
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Ernesto S Battaglia
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
| | - Silvestre Bongiovanni Abel
- Biomedical Polymers Division, Research Institute for Materials Science and Technology (INTEMA), National University of Mar del Plata (UNMdP), National Scientific and Technical Research Council (CONICET), Av. Colón 10850, Mar del Plata 7600, Argentina
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Brooker C, Tronci G. A collagen-based theranostic wound dressing with visual, long-lasting infection detection capability. Int J Biol Macromol 2023; 236:123866. [PMID: 36870632 DOI: 10.1016/j.ijbiomac.2023.123866] [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: 12/01/2022] [Revised: 02/07/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023]
Abstract
Continuous wound monitoring is one strategy to minimise infection severity and inform prompt variations in therapeutic care following infection diagnosis. However, integration of this functionality in therapeutic wound dressings is still challenging. We hypothesised that a theranostic dressing could be realised by integrating a collagen-based wound contact layer with previously demonstrated wound healing capability, and a halochromic dye, i.e. bromothymol blue (BTB), undergoing colour change following infection-associated pH changes (pH: 5-6 ➔ >7). Two different BTB integration strategies, i.e. electrospinning and drop-casting, were pursued to introduce long-lasting visual infection detection capability through retention of BTB within the dressing. Both systems had an average BTB loading efficiency of 99 wt% and displayed a colour change within 1 min of contact with simulated wound fluid. Drop-cast samples retained up to 85 wt% of BTB after 96 h in a near-infected wound environment, in contrast to the fibre-bearing prototypes, which released over 80 wt% of BTB over the same time period. An increase in collagen denaturation temperature (DSC) and red shifts (ATR-FTIR) suggest the formation of secondary interactions between the collagen-based hydrogel and the BTB, which are attributed to count for the long-lasting dye confinement and durable dressing colour change. Given the high L929 fibroblast viability in drop-cast sample extracts (92 %, 7 days), the presented multiscale design is simple, cell- and regulatory-friendly, and compliant with industrial scale-up. This design, therefore, offers a new platform for the development of theranostic dressings enabling accelerated wound healing and prompt infection diagnosis.
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Affiliation(s)
- Charles Brooker
- Clothworkers' Centre for Textile Materials Innovation for Healthcare (CCTMIH), School of Design, University of Leeds, Leeds LS2 9JT, United Kingdom; School of Dentistry, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, United Kingdom
| | - Giuseppe Tronci
- Clothworkers' Centre for Textile Materials Innovation for Healthcare (CCTMIH), School of Design, University of Leeds, Leeds LS2 9JT, United Kingdom; School of Dentistry, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, United Kingdom.
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Etxabide A, Akbarinejad A, Chan EW, Guerrero P, de la Caba K, Travas-Sejdic J, Kilmartin PA. Effect of gelatin concentration, ribose and glycerol additions on the electrospinning process and physicochemical properties of gelatin nanofibers. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Gao Y, Qiu Z, Liu L, Li M, Xu B, Yu D, Qi D, Wu J. Multifunctional fibrous wound dressings for refractory wound healing. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yujie Gao
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
| | - Zhiye Qiu
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
| | - Lei Liu
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
| | - Mengmeng Li
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
| | - Bingjie Xu
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
| | - Dan Yu
- Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital Zhejiang University School of Medicine Hangzhou China
| | - Dongming Qi
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
- Zhejiang Provincial Engineering Research Center for Green and Low‐carbon Dyeing & Finishing Zhejiang Sci‐Tech University Hangzhou China
| | - Jindan Wu
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology Zhejiang Sci‐Tech University Hangzhou China
- Zhejiang Provincial Engineering Research Center for Green and Low‐carbon Dyeing & Finishing Zhejiang Sci‐Tech University Hangzhou China
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Maldonado-Carmona N, Ouk TS, Leroy-Lhez S. Latest trends on photodynamic disinfection of Gram-negative bacteria: photosensitizer's structure and delivery systems. Photochem Photobiol Sci 2021; 21:113-145. [PMID: 34784052 DOI: 10.1007/s43630-021-00128-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 10/26/2021] [Indexed: 02/01/2023]
Abstract
Antimicrobial resistance is threatening to overshadow last century's medical advances. Etiological agents of previously eradicated infectious diseases are now resurgent as multidrug-resistant strains, especially for Gram-negative strains. Finding new therapeutic solutions is a real challenge for our society. In this framework, Photodynamic Antimicrobial ChemoTherapy relies on the generation of toxic reactive oxygen species in the presence of light, oxygen, and a photosensitizer molecule. The use of reactive oxygen species is common for disinfection processes, using chemical agents, such as chlorine and hydrogen peroxide, and as they do not have a specific molecular target, it decreases the potential of tolerance to the antimicrobial treatment. However, light-driven generated reactive species result in an interesting alternative, as reactive species generation can be easily tuned with light irradiation and several PSs are known for their low environmental impact. Over the past few years, this topic has been thoroughly studied, exploring strategies based on single-molecule PSs (tetrapyrrolic compounds, dipyrrinate derivatives, metal complexes, etc.) or on conjunction with delivery systems. The present work describes some of the most relevant advances of the last 6 years, focusing on photosensitizers design, formulation, and potentiation, aiming for the disinfection of Gram-negative bacteria.
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Affiliation(s)
- Nidia Maldonado-Carmona
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, 87060, Limoges, France.,Department of Chemistry, University of Coimbra, Coimbra Chemistry Center, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Tan-Sothea Ouk
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, 87060, Limoges, France
| | - Stéphanie Leroy-Lhez
- PEIRENE Laboratory, Faculty of Sciences and Techniques, University of Limoges, 87060, Limoges, France.
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Toro RG, Adel AM, de Caro T, Federici F, Cerri L, Bolli E, Mezzi A, Barbalinardo M, Gentili D, Cavallini M, Al-Shemy MT, Montanari R, Caschera D. Evaluation of Long-Lasting Antibacterial Properties and Cytotoxic Behavior of Functionalized Silver-Nanocellulose Composite. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4198. [PMID: 34361390 PMCID: PMC8347877 DOI: 10.3390/ma14154198] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/10/2021] [Accepted: 07/21/2021] [Indexed: 11/29/2022]
Abstract
Materials possessing long-term antibacterial behavior and high cytotoxicity are of extreme interest in several applications, from biomedical devices to food packaging. Furthermore, for the safeguard of the human health and the environment, it is also stringent keeping in mind the need to gather good functional performances with the development of ecofriendly materials and processes. In this study, we propose a green fabrication method for the synthesis of silver nanoparticles supported on oxidized nanocellulose (ONCs), acting as both template and reducing agent. The complete structural and morphological characterization shows that well-dispersed and crystalline Ag nanoparticles of about 10-20 nm were obtained in the cellulose matrix. The antibacterial properties of Ag-nanocomposites (Ag-ONCs) were evaluated through specific Agar diffusion tests against E. coli bacteria, and the results clearly demonstrate that Ag-ONCs possess high long-lasting antibacterial behavior, retained up to 85% growth bacteria inhibition, even after 30 days of incubation. Finally, cell viability assays reveal that Ag-ONCs show a significant cytotoxicity in mouse embryonic fibroblasts.
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Affiliation(s)
- Roberta Grazia Toro
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
| | - Abeer Mohamed Adel
- Cellulose and Paper Department, National Research Centre, 33El-Bohouth St. (Former El-Tahrir St.), Dokki, Giza, Cairo 12622, Egypt; (A.M.A.); (M.T.A.-S.)
| | - Tilde de Caro
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
| | - Fulvio Federici
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
| | - Luciana Cerri
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
| | - Eleonora Bolli
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
| | - Alessio Mezzi
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
| | - Marianna Barbalinardo
- Institute for the Study of Nanostructured Materials, National Council of Research, Via P. Gobetti, 40129 Bologna, Italy; (M.B.); (D.G.); (M.C.)
| | - Denis Gentili
- Institute for the Study of Nanostructured Materials, National Council of Research, Via P. Gobetti, 40129 Bologna, Italy; (M.B.); (D.G.); (M.C.)
| | - Massimiliano Cavallini
- Institute for the Study of Nanostructured Materials, National Council of Research, Via P. Gobetti, 40129 Bologna, Italy; (M.B.); (D.G.); (M.C.)
| | - Mona Tawfik Al-Shemy
- Cellulose and Paper Department, National Research Centre, 33El-Bohouth St. (Former El-Tahrir St.), Dokki, Giza, Cairo 12622, Egypt; (A.M.A.); (M.T.A.-S.)
| | - Roberta Montanari
- Institute of Crystallography, National Council of Research, Via Salaria Km 29,300, Monterotondo, 00015 Rome, Italy;
| | - Daniela Caschera
- Institute for the Study of Nanostructured Materials, National Council of Research, Via Salaria km 29,300, Monterotondo, 00015 Rome, Italy; (R.G.T.); (T.d.C.); (F.F.); (L.C.); (E.B.); (A.M.)
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Oyim J, Omolo CA, Amuhaya EK. Photodynamic Antimicrobial Chemotherapy: Advancements in Porphyrin-Based Photosensitize Development. Front Chem 2021; 9:635344. [PMID: 33898388 PMCID: PMC8058465 DOI: 10.3389/fchem.2021.635344] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/15/2021] [Indexed: 12/13/2022] Open
Abstract
The reduction of available drugs with effectiveness against microbes is worsening with the current global crisis of antimicrobial resistance. This calls for innovative strategies for combating antimicrobial resistance. Photodynamic Antimicrobial Chemotherapy (PACT) is a relatively new method that utilizes the combined action of light, oxygen, and a photosensitizer to bring about the destruction of microorganisms. This technique has been found to be effective against a wide spectrum of microorganisms, including bacteria, viruses, and fungi. Of greater interest is their ability to destroy resistant strains of microorganisms and in effect help in combating the emergence of antimicrobial resistance. This manuscript reviews porphyrins and porphyrin-type photosensitizers that have been studied in the recent past with a focus on their structure-activity relationship.
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Affiliation(s)
- James Oyim
- School of Pharmacy and Health Sciences, United States International University-Africa, Nairobi, Kenya
- Department of Chemistry, University of Nairobi, Nairobi, Kenya
| | - Calvin A. Omolo
- School of Pharmacy and Health Sciences, United States International University-Africa, Nairobi, Kenya
- Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Edith K. Amuhaya
- School of Pharmacy and Health Sciences, United States International University-Africa, Nairobi, Kenya
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