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Yadav S, Khan J, Yadav A. Applications of Scaffolds in Tissue Engineering: Current Utilization and Future Prospective. Curr Gene Ther 2024; 24:94-109. [PMID: 37921144 DOI: 10.2174/0115665232262167231012102837] [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: 05/31/2023] [Revised: 07/29/2023] [Accepted: 08/23/2023] [Indexed: 11/04/2023]
Abstract
Current regenerative medicine tactics focus on regenerating tissue structures pathologically modified by cell transplantation in combination with supporting scaffolds and biomolecules. Natural and synthetic polymers, bioresorbable inorganic and hybrid materials, and tissue decellularized were deemed biomaterials scaffolding because of their improved structural, mechanical, and biological abilities.Various biomaterials, existing treatment methodologies and emerging technologies in the field of Three-dimensional (3D) and hydrogel processing, and the unique fabric concerns for tissue engineering. A scaffold that acts as a transient matrix for cell proliferation and extracellular matrix deposition, with subsequent expansion, is needed to restore or regenerate the tissue. Diverse technologies are combined to produce porous tissue regenerative and tailored release of bioactive substances in applications of tissue engineering. Tissue engineering scaffolds are crucial ingredients. This paper discusses an overview of the various scaffold kinds and their material features and applications. Tabulation of the manufacturing technologies for fabric engineering and equipment, encompassing the latest fundamental and standard procedures.
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Affiliation(s)
- Shikha Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Javed Khan
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Agrima Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
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2
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Gicheha D, Cisse AN, Bhuiyan A, Shamim N. Non-Isothermal Crystallization Kinetics of Poly (ɛ-Caprolactone) (PCL) and MgO Incorporated PCL Nanofibers. Polymers (Basel) 2023; 15:3013. [PMID: 37514403 PMCID: PMC10383040 DOI: 10.3390/polym15143013] [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: 04/18/2023] [Revised: 07/01/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
The study delves into the kinetics of non-isothermal crystallization of Poly (ɛ-caprolactone) (PCL) and MgO-incorporated PCL nanofibers with varying cooling rates. Differential Scanning Calorimetry (DSC-3) was used to acquire crystallization information and investigate the kinetics behavior of the two types of nanofibers under different cooling rates ranging from 0.5-5 K/min. The results show that the crystallization rate decreases at higher crystallization temperatures. Furthermore, the parameters of non-isothermal crystallization kinetics were investigated via several mathematical models, including Jeziorny and Mo's models. Mo's approach was suitable to describe the nanofibers' overall non-isothermal crystallization process. In addition, the Kissinger and Friedman methods were used to calculate the activation energy of bulk-PCL, PCL, and MgO-PCL nanofibers. The result showed that the activation energy of bulk-PCL was comparatively lower than that of nanofibers. The investigation of the kinetics of crystallization plays a crucial role in optimizing manufacturing processes and enhancing the overall performance of nanofibers.
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Affiliation(s)
- Daisaku Gicheha
- Department of Chemical Engineering, Prairie View A & M University, Prairie View, TX 77446, USA
| | - Aicha Noura Cisse
- Department of Chemical Engineering, Prairie View A & M University, Prairie View, TX 77446, USA
| | - Ariful Bhuiyan
- Mechanical Engineering Program, University of Houston Clear Lake, Houston, TX 77058, USA
| | - Nabila Shamim
- Department of Chemical Engineering, Prairie View A & M University, Prairie View, TX 77446, USA
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3
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Barr RK, Barber BW, Tait JR, Landersdorfer CB, Salman S, Musk GC, Page-Sharp M, Batty KT, Kado J, Manning L, Carapetis JR, Boyd BJ. Development of a sustained release implant of benzathine penicillin G for secondary prophylaxis of rheumatic heart disease. Eur J Pharm Biopharm 2023:S0939-6411(23)00159-5. [PMID: 37354997 DOI: 10.1016/j.ejpb.2023.06.006] [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: 03/14/2023] [Revised: 05/21/2023] [Accepted: 06/12/2023] [Indexed: 06/26/2023]
Abstract
BACKGROUND Regular intramuscular (i.m.) benzathine penicillin G (BPG) injections have been the cornerstone of rheumatic heart disease (RHD) secondary prophylaxis since the 1950s. Patient adherence to IM BPG is poor, largely due to pain, the need for regular injections every 3-4 weeks and health sector delivery challenges in resource-limited settings. There is an urgent need for new approaches for secondary prophylaxis, such as an implant which could provide sustained penicillin concentrations for more than 6 months. METHODS In this study we developed and evaluated a slow release implant with potential for substantially extended treatment. The side wall of a solid drug rich core was coated with polycaprolactone which acts as an impermeable barrier. The exposed surfaces at the ends of the implant defined the release surface area, and the in vitro release rate of drug was proportional to the exposed surface area across implants of differing diameter. The in vivo pharmacokinetics and tolerability of the implants were evaluated in a sheep model over 9 weeks after subcutaneous implantation. RESULTS The absolute release rates obtained for the poorly water-soluble benzathine salt were dependent on the exposed surface area demonstrating the impermeability of the wall of the implant. The implants were well-tolerated after subcutaneous implantation in a sheep model, without adverse effects at the implantation site. Gross structural integrity was maintained over the course of the study, with erosion limited to the dual-exposed ends. Steady release of penicillin G was observed over the 9 weeks and resulted in approximately constant plasma concentrations close to accepted target concentrations. CONCLUSION In principle, a long acting BPG implant is feasible as an alternative to IM injections for secondary prophylaxis of RHD. However, large implant size is currently a significant impediment to clinical utility and acceptability.
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Affiliation(s)
- Renae K Barr
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, WA, Australia
| | - Bryce W Barber
- Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | - Jessica R Tait
- Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia
| | | | - Sam Salman
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, WA, Australia; Clinical Pharmacology and Toxicology Unit, PathWest Laboratory Medicine, Nedlands, WA, Australia; Medical School, University of Western Australia, Crawley, WA, Australia
| | - Gabrielle C Musk
- Animal Care Services, University of Western Australia, Crawley, WA, Australia
| | - Madhu Page-Sharp
- Curtin Medical School, Curtin University, Bentley, WA, Australia
| | - Kevin T Batty
- Curtin Medical School, Curtin University, Bentley, WA, Australia
| | - Joseph Kado
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, WA, Australia
| | - Laurens Manning
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, WA, Australia; Medical School, University of Western Australia, Crawley, WA, Australia; Department of Infectious Diseases, Fiona Stanley Hospital, Murdoch, WA, Australia
| | - Jonathan R Carapetis
- Wesfarmers Centre for Vaccines and Infectious Diseases, Telethon Kids Institute, Nedlands, WA, Australia; Medical School, University of Western Australia, Crawley, WA, Australia; Department of Infectious Diseases, Perth Children's Hospital, Nedlands, WA, Australia4.
| | - Ben J Boyd
- Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia; University of Copenhagen Department of Pharmacy, University of Copenhagen Universitetsparken 2, 2100 Copenhagen, Denmark.
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Ayvazoğlu BŞ, Ceylan M, Turan AAI, Yılmaz EB. Biodegradable Polycaprolactone Fibers with Silica Aerogel and Nanosilver Particles Produce a Coagulation Effect. Polymers (Basel) 2023; 15:polym15092022. [PMID: 37177170 PMCID: PMC10180577 DOI: 10.3390/polym15092022] [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: 10/25/2022] [Revised: 11/08/2022] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
Poly-ε-caprolactone (PCL) is a biodegradable aliphatic polyester that can be used in the field of biomaterials. Electrospinning is the name given to the process of producing micro and nanoscale fibers using electrostatically charged polymeric solutions under certain conditions. Almost all synthetic and naturally occurring polymers can undergo electrospinning using suitable solvents or mixtures prepared in certain proportions. In this study, silica aerogels were obtained by the sol-gel method. PCL-silica aerogel fibers were synthesized by adding 0.5, 1, 2, and 4% ratios in the PCL solution. Blood contact analysis was performed on the produced fibers with UV-VIS. According to the results obtained, 0.5, 1, 2, and 4% nano-silver were added to the fiber-containing 4% aerogel. Then, SEM-EDS and FTIR analyses were performed on all fibers produced. Antimicrobial tests were performed on fibers containing nano-silver. As a result, high-performance blood coagulation fibers were developed using PCL with aerogel, and an antimicrobial effect was achieved with nano-silver particles. It is thought that the designed surface will be preferred in wound dressing and biomaterial in tissue engineering, as it provides a high amount of cell adhesion with a small amount of blood and contains antimicrobial properties.
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Affiliation(s)
| | - Muhammet Ceylan
- Graduate School of Natural and Applied Sciences, Istanbul Ticaret University, 34840 Istanbul, Turkey
| | - Aybüke A Isbir Turan
- Institute of Forensic Sciences, Turkish National Police Academy, 06834 Ankara, Turkey
| | - Elif Burcu Yılmaz
- Graduate School of Natural and Applied Sciences, Istanbul Ticaret University, 34840 Istanbul, Turkey
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Patel KA, Patel JR, Patel VV, Duseja S, Raval HJ. Knowledge and awareness of polycaprolactone and its applications as provisional material in prosthodontic practice: A questionnaire-based survey. J Indian Prosthodont Soc 2023; 23:78-83. [PMID: 36588379 PMCID: PMC10088449 DOI: 10.4103/jips.jips_224_22] [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: 05/03/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 12/30/2022] Open
Abstract
Aim The present study was done to evaluate the knowledge and awareness of different provisional materials, especially polycaprolactone (PCL) and their application in prosthodontic practice. Setting and Design A questionnaire based survey was carried out to assess the knowledge and awareness of PCL and its applications as provisional material in prosthodontic practice. Materials and Method A questionnaire-based descriptive study consisting of 10 questions related to different provisional materials and their applications in prosthodontic practice was formulated on Google Forms. The link was created and circulated among the prosthodontist faculty members of various dental institutes and private practitioners of India with the use of digital platforms such as E-mail and social media. The data were collected and examined using Microsoft Excel software for statistical evaluation. Statistical Analysis Used For this descriptive type of study, knowledge and awareness among prosthodontists across India was evaluated using Microsoft Excel software. Results The use of PCL was known only to 20.75% of prosthodontists. Moreover, its application and indications are known to only <1% of the study participants. Autopolymerizing resin was most commonly used for the custom tray and temporary base fabrication as well as temporization in crown and bridge prosthesis, while muscle deprogrammer and surgical template were commonly fabricated in heat-cure and clear acrylic resin, respectively. Pattern resin was found to be commonly used in splinting implant impression copings. Conclusion The use of PCL as a temporary denture base, custom tray, muscle deprogrammer, implant impression splinting, and provisional for crown and bridge and templates should be encouraged and incorporated to get benefits of its characteristic properties. Considering the overall performance of PCL, its use should be incorporated into prosthodontic research and practice.
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Affiliation(s)
- Kavan A. Patel
- Department of Prosthodontics and Crown and Bridge, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Jayanti R. Patel
- Department of Prosthodontics and Crown and Bridge, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Vilas V. Patel
- Department of Prosthodontics and Crown and Bridge, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Sareen Duseja
- Department of Prosthodontics and Crown and Bridge, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
| | - Harekrishna Jayendra Raval
- Department of Prosthodontics and Crown and Bridge, Narsinhbhai Patel Dental College and Hospital, Sankalchand Patel University, Visnagar, Gujarat, India
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Syed Mohamed SMD, Ansari NF, Md Iqbal N, Anis SNS. Polyhydroxyalkanoates (PHA)-based responsive polymers. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2021.1962874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Nor Faezah Ansari
- Department of Biotechnology, Kulliyyah of Science, International Islamic University of Malaysia, Kuantan, Malaysia
- Research Unit for Bioinformatics and Computational Biology (RUBIC), International Islamic University of Malaysia, Kuantan, Malaysia
| | | | - Siti Nor Syairah Anis
- IJN-UTM Cardiovascular Engineering Centre, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
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Composite silk fibroin hydrogel scaffolds for cartilage tissue regeneration. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Marinho VAD, Sousa FM, Vinhas GM, Almeida YMB, Carvalho LH. Influence of the content of corn thermoplastic starches (TPS) prepared with different plasticizers on the rheological and mechanical properties of PCL/TPS blends. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04416-7] [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]
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Jafari M, Nourbakhsh MS, Salati A, Farrokhi AS. Synthesis and Characterization of Paramomycin-loaded CoFe 2O 4/Polyethylene Glycol – Poly (Lactic-co-glycolic Acid) Core-Shell Spheres for Treatment of Cutaneous Leishmaniasis. J MACROMOL SCI B 2022. [DOI: 10.1080/00222348.2022.2045771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Maral Jafari
- Department of Biomedical Engineering, Faculty of New Sciences and Technologies, Semnan University, Semnan, Iran
| | - Mohammad Sadegh Nourbakhsh
- Department of Biomedical Engineering, Faculty of New Sciences and Technologies, Semnan University, Semnan, Iran
- Faculty of Materials and Metallurgical Engineering, Semnan University, Semnan, Iran
| | - Amir Salati
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran
- Department of Tissue Engineering and Applied Cell Sciences, Semnan University of Medical Sciences, Semnan, Iran
| | - Amir Salek Farrokhi
- Department of Immunology, Semnan University of Medical Sciences, Semnan, Iran
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11
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Transport Studies of Biocompatible Polymeric Membrane and its Application in Lead Ion (Pb++) Absorption. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Priya G, Kumar UN, Madhan B, Manjubala I. Development of carboxymethylcellulose based composites for bone tissue engineering. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2021. [DOI: 10.1680/jbibn.20.00045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The present study focuses on the development of carboxymethylcellulose (CMC)–biphasic calcium phosphate (BCP) composite scaffolds through the freeze-drying process for bone tissue engineering applications. Citric acid or fumaric acid was added as the cross-linker of CMC to improve the stability of composite scaffolds. The effect of change in freezing temperature (−20, −40 or −80°C) on the pore morphology, swelling ability and mechanical properties of composite scaffolds was studied. Cross-linked scaffolds showed an increased thermal degradation temperature compared with non-cross-linked scaffolds. All the composite scaffolds showed a porous structure with homogeneous blending of CMC and BCP. Cross-linked scaffolds showed appreciable swelling ability and stability in phosphate-buffered saline, while non-cross-linked scaffolds were unstable for 24 h. Cross-linked scaffolds had lower compressive strength than non-cross-linked scaffolds under dry conditions. However, in the hydrated state, only citric acid-cross-linked scaffolds were stable with improved compressive strength of 64 ± 4, 57 ± 4 and 67 ± 4 kPa when processed at −20, −40 and −80°C, respectively. Furthermore, three-dimensional culture of Saos-2 cells on citric acid-cross-linked scaffolds showed their suitability for cell proliferation and osteogenic differentiation. Therefore, citric acid-cross-linked CMC–BCP composite scaffolds may be promising scaffolds for bone tissue engineering applications.
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Affiliation(s)
- Ganesan Priya
- Department of Biosciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Uttamchand Narendra Kumar
- Department of Manufacturing Engineering, School of Mechanical Engineering, Vellore Institute of Technology, Vellore, India
| | - Balaraman Madhan
- Center for Academic and Research Excellence, CSIR–Central Leather Research Institute, Chennai, India
| | - Inderchand Manjubala
- Department of Biosciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
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Vacaras S, Baciut G, Gheban D, Bran S, Colosi H, Toader S, Opris D, Kretschmer W, Manea A, Armencea G, Baciut M, Opris H, Mitre I, Hedesiu M, Dinu C. Engaging a polylactide copolymer in oral tissue regeneration: first validation of Suprathel ® for guided epithelial and osseous healing. J Med Life 2021; 14:181-197. [PMID: 34104241 PMCID: PMC8169152 DOI: 10.25122/jml-2021-0083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The present study investigated the capacity of Suprathel® (a copolymer membrane, so far validated for skin regeneration) to also regenerate oral tissue – mucosa and bone, by comparing this biomaterial, in a split-mouth rabbit model, to Mucoderm®, a xenogeneic collagen matrix certified for keratinized oral mucosa healing. The clinical reason behind this experimental animal model was to determine whether the benefits of this advanced skin regeneration product (Suprathel®) could be conveyed for future evaluation in clinical trials of oral tissue regeneration in humans. The outcomes of this study validated the use of Suprathel®, a terpolymer of polylactide with trimethylene carbonate and ε-caprolactone, for stimulation of oral epithelium and alveolar bone regeneration in rabbits. Both Suprathel® and Mucoderm® exhibited comparable results and the null hypothesis stating a comparable regenerating effect of these two materials could not be rejected.
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Affiliation(s)
- Sergiu Vacaras
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Grigore Baciut
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan Gheban
- Department of Morphological Sciences, Division of Pathoanatomy, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Simion Bran
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Horatiu Colosi
- Department of Medical Education, Division of Medical Informatics and Biostatistics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Septimiu Toader
- Center for Experimental Surgery, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Daiana Opris
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Winfried Kretschmer
- Klinik fur Mund-, Kiefer- und Plastische Gesichtschirurgie, Alb Fils Kliniken GmbH, Goppingen, Baden-Wurttemberg, Germany
| | - Avram Manea
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Gabriel Armencea
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihaela Baciut
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Horia Opris
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ileana Mitre
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Mihaela Hedesiu
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Radiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Cristian Dinu
- Department of Maxillofacial Surgery and Radiology, Division of Maxillofacial Surgery and Implantology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Macrocycles in dual role: ancillary ligands in metal complexes and organocatalysts for the ring-opening polymerization of lactide. J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-021-01045-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Theodoridis K, Manthou ME, Aggelidou E, Kritis A. In Vivo Cartilage Regeneration with Cell-Seeded Natural Biomaterial Scaffold Implants: 15-Year Study. TISSUE ENGINEERING PART B-REVIEWS 2021; 28:206-245. [PMID: 33470169 DOI: 10.1089/ten.teb.2020.0295] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Articular cartilage can be easily damaged from human's daily activities, leading to inflammation and to osteoarthritis, a situation that can diminish the patients' quality of life. For larger cartilage defects, scaffolds are employed to provide cells the appropriate three-dimensional environment to proliferate and differentiate into healthy cartilage tissue. Natural biomaterials used as scaffolds, attract researchers' interest because of their relative nontoxic nature, their abundance as natural products, their easy combination with other materials, and the relative easiness to establish Marketing Authorization. The last 15 years were chosen to review, document, and elucidate the developments on cell-seeded natural biomaterials for articular cartilage treatment in vivo. The parameters of the experimental designs and their results were all documented and presented. Considerations about the newly formed cartilage and the treatment of cartilage defects were discussed, along with difficulties arising when applying natural materials, research limitations, and tissue engineering approaches for hyaline cartilage regeneration.
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Affiliation(s)
- Konstantinos Theodoridis
- Department of Physiology and Pharmacology, Faculty of Health Sciences and cGMP Regenerative Medicine Facility, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
| | - Maria Eleni Manthou
- Laboratory of Histology, Embryology, and Anthropology, Faculty of Health Sciences, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
| | - Eleni Aggelidou
- Department of Physiology and Pharmacology, Faculty of Health Sciences and cGMP Regenerative Medicine Facility, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
| | - Aristeidis Kritis
- Department of Physiology and Pharmacology, Faculty of Health Sciences and cGMP Regenerative Medicine Facility, School of Medicine, Aristotle University of Thessaloniki (A.U.Th), Thessaloniki, Greece
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Emre Oz Y, Keskin-Erdogan Z, Safa N, Esin Hames Tuna E. A review of functionalised bacterial cellulose for targeted biomedical fields. J Biomater Appl 2021; 36:648-681. [PMID: 33673762 DOI: 10.1177/0885328221998033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Bacterial cellulose (BC), which can be produced by microorganisms, is an ideal biomaterial especially for tissue engineering and drug delivery systems thanks to its properties of high purity, biocompatibility, high mechanical strength, high crystallinity, 3 D nanofiber structure, porosity and high-water holding capacity. Therefore, wide ranges of researches have been done on the BC production process and its structural and physical modifications to make it more suitable for certain targeted biomedical applications thoroughly. BC's properties such as mechanical strength, pore diameter and porosity can be tuned in situ or ex situ processes by using various polymer and compounds. Besides, different organic or inorganic compounds that support cell attachment, proliferation and differentiation or provide functions such as antimicrobial effectiveness can be gained to its structure for targeted application. These processes not only increase the usage options of BC but also provide success for mimicking the natural tissue microenvironment, especially in tissue engineering applications. In this review article, the studies on optimisation of BC production in the last decade and the BC modification and functionalisation studies conducted for the three main perspectives as tissue engineering, drug delivery and wound dressing with diverse approaches are summarized.
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Affiliation(s)
- Yunus Emre Oz
- Department of Bioengineering, Graduate School of Natural and Applied Science, Ege University, Izmir, Turkey
| | - Zalike Keskin-Erdogan
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, London, UK
| | - Neriman Safa
- Department of Bioengineering, Graduate School of Natural and Applied Science, Ege University, Izmir, Turkey
| | - E Esin Hames Tuna
- Department of Bioengineering, Graduate School of Natural and Applied Science, Ege University, Izmir, Turkey.,Department of Bioengineering, Faculty of Engineering, Ege University, Izmir, Turkey
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Zhong Y, Feng Q, Wang X, Yang L, Korovich AG, Madsen LA, Tong R. Photocatalyst-independent photoredox ring-opening polymerization of O-carboxyanhydrides: stereocontrol and mechanism. Chem Sci 2021; 12:3702-3712. [PMID: 34163644 PMCID: PMC8179436 DOI: 10.1039/d0sc05550f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/18/2021] [Indexed: 11/21/2022] Open
Abstract
Photoredox ring-opening polymerization of O-carboxyanhydrides allows for the synthesis of polyesters with precisely controlled molecular weights, molecular weight distributions, and tacticities. While powerful, obviating the use of precious metal-based photocatalysts would be attractive from the perspective of simplifying the protocol. Herein, we report the Co and Zn catalysts that are activated by external light to mediate efficient ring-opening polymerization of O-carboxyanhydrides, without the use of exogenous precious metal-based photocatalysts. Our methods allow for the synthesis of isotactic polyesters with high molecular weights (>200 kDa) and narrow molecular weight distributions (M w/M n < 1.1). Mechanistic studies indicate that light activates the oxidative status of a CoIII intermediate that is generated from the regioselective ring-opening of the O-carboxyanhydride. We also demonstrate that the use of Zn or Hf complexes together with Co can allow for stereoselective photoredox ring-opening polymerizations of multiple racemic O-carboxyanhydrides to synthesize syndiotactic and stereoblock copolymers, which vary widely in their glass transition temperatures.
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Affiliation(s)
- Yongliang Zhong
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University 635 Prices Fork Road, Blacksburg Virginia 24061 USA
| | - Quanyou Feng
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University 635 Prices Fork Road, Blacksburg Virginia 24061 USA
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing 210023 China
| | - Xiaoqian Wang
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University 635 Prices Fork Road, Blacksburg Virginia 24061 USA
| | - Lei Yang
- Key Laboratory for Organic Electronics and Information Displays, Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts and Telecommunications 9 Wenyuan Road Nanjing 210023 China
| | - Andrew G Korovich
- Department of Chemistry, Virginia Polytechnic Institute and State University 1040 Drillfield Drive, Blacksburg Virginia 24061 USA
| | - Louis A Madsen
- Department of Chemistry, Virginia Polytechnic Institute and State University 1040 Drillfield Drive, Blacksburg Virginia 24061 USA
| | - Rong Tong
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University 635 Prices Fork Road, Blacksburg Virginia 24061 USA
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Natural and Synthetic Polymeric Scaffolds. Biomed Mater 2021. [DOI: 10.1007/978-3-030-49206-9_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Ekinci A, Gleadall A, Johnson AA, Li L, Han X. Mechanical and hydrolytic properties of thin polylactic acid films by fused filament fabrication. J Mech Behav Biomed Mater 2020; 114:104217. [PMID: 33246876 DOI: 10.1016/j.jmbbm.2020.104217] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/26/2020] [Accepted: 11/15/2020] [Indexed: 01/14/2023]
Abstract
Thin polymeric films are widely used as medical applications such as cell culture, stent, drug delivery and mechanical fixation. One of the most commonly used materials is polylactic acid (PLA) - a material, which is non-toxic, biodegradable and biocompatible. Fused filament fabrication (FFF) is a preferable additive manufacturing technique to manufacture polymers, where PLA is one of the most common materials. FFF is a promising technique for customised biomedical applications due to its relatively low cost and geometrical flexibility where biomedical applications are patient tailored. This study is the first to consider FFF monolayered thin films of PLA in terms of mechanical and hydrolytic properties at 37 °C in vitro degradation. Throughout degradation, the reduction in mechanical properties was examined by analysing molecular weight and thermal properties. FFF monolayered PLA underwent autocatalytic bulk degradation with no proof of significant mass loss. Young's modulus, ultimate tensile strength and molecular weight reduced by approximately 60%, 86%, and 80% after 280 days, respectively, while the degree of crystallinity increased by 143% in comparison to benchmark thin films at day 0. It was found that the decrease in mechanical properties was more sensitive to the increase in crystallinity in the early stage of the degradation, while the molecular weight was more dominant in the late stage of the degradation. This study provides practical information in terms of mechanical properties to support medical device designers in a range of potential end-use biomedical applications to achieve safe functional products over the required degradation lifetime.
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Affiliation(s)
- Alper Ekinci
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, LE11 3TU, UK
| | - Andy Gleadall
- Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, LE11 3TU, UK
| | - Andrew A Johnson
- School of Design & Creative Arts, Loughborough University, Loughborough, LE11 3TU, UK
| | - Ling Li
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, 410082, China
| | - Xiaoxiao Han
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, 410082, China.
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20
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Neodymium monochloride and monoallyl complexes {2-[Ph2P(O)]C6H4NC(But)N(2,6-Me2C6H3)}2NdR (R = Cl, CH2CH=CH2) with the tridentate amidinate ligand in the catalysis of ring-opening polymerization of cyclic esters. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2876-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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21
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Martin AA, Sassaki GL, Sierakowski MR. Effect of adding galactomannans on some physical and chemical properties of hyaluronic acid. Int J Biol Macromol 2020; 144:527-535. [DOI: 10.1016/j.ijbiomac.2019.12.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/02/2019] [Accepted: 12/14/2019] [Indexed: 12/12/2022]
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Asadian M, Chan KV, Norouzi M, Grande S, Cools P, Morent R, De Geyter N. Fabrication and Plasma Modification of Nanofibrous Tissue Engineering Scaffolds. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E119. [PMID: 31936372 PMCID: PMC7023287 DOI: 10.3390/nano10010119] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/13/2019] [Accepted: 12/21/2019] [Indexed: 12/15/2022]
Abstract
This paper provides a comprehensive overview of nanofibrous structures for tissue engineering purposes and the role of non-thermal plasma technology (NTP) within this field. Special attention is first given to nanofiber fabrication strategies, including thermally-induced phase separation, molecular self-assembly, and electrospinning, highlighting their strengths, weaknesses, and potentials. The review then continues to discuss the biodegradable polyesters typically employed for nanofiber fabrication, while the primary focus lies on their applicability and limitations. From thereon, the reader is introduced to the concept of NTP and its application in plasma-assisted surface modification of nanofibrous scaffolds. The final part of the review discusses the available literature on NTP-modified nanofibers looking at the impact of plasma activation and polymerization treatments on nanofiber wettability, surface chemistry, cell adhesion/proliferation and protein grafting. As such, this review provides a complete introduction into NTP-modified nanofibers, while aiming to address the current unexplored potentials left within the field.
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Affiliation(s)
- Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Ke Vin Chan
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Mohammad Norouzi
- Department of Biomedical Engineering, University of Manitoba, Winnipeg, MB R3E 0Z3, Canada;
| | - Silvia Grande
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Pieter Cools
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, B4, B-9000 Ghent, Belgium; (K.V.C.); (S.G.); (P.C.); (R.M.); (N.D.G.)
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Tian J, Yang Y, Song J. Grafting polycaprolactone onto alkaline lignin for improved compatibility and processability. Int J Biol Macromol 2019; 141:919-926. [DOI: 10.1016/j.ijbiomac.2019.09.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 09/04/2019] [Accepted: 09/07/2019] [Indexed: 01/25/2023]
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de Lima Nascimento TR, de Amoêdo Campos Velo MM, Silva CF, Costa Cruz SBS, Gondim BLC, Mondelli RFL, Castellano LRC. Current Applications of Biopolymer-based Scaffolds and Nanofibers as Drug Delivery Systems. Curr Pharm Des 2019; 25:3997-4012. [PMID: 31701845 DOI: 10.2174/1381612825666191108162948] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/01/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND The high surface-to-volume ratio of polymeric nanofibers makes them an effective vehicle for the release of bioactive molecules and compounds such as growth factors, drugs, herbal extracts and gene sequences. Synthetic polymers are commonly used as sensors, reinforcements and energy storage, whereas natural polymers are more prone to mimicking an extracellular matrix. Natural polymers are a renewable resource and classified as an environmentally friendly material, which might be used in different techniques to produce nanofibers for biomedical applications such as tissue engineering, implantable medical devices, antimicrobial barriers and wound dressings, among others. This review sheds some light on the advantages of natural over synthetic polymeric materials for nanofiber production. Also, the most important techniques employed to produce natural nanofibers are presented. Moreover, some pieces of evidence regarding toxicology and cell-interactions using natural nanofibers are discussed. Clearly, the potential extrapolation of such laboratory results into human health application should be addressed cautiously.
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Affiliation(s)
- Tatiana Rita de Lima Nascimento
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
| | | | - Camila Félix Silva
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
| | - Sara Brito Silva Costa Cruz
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
| | - Brenna Louise Cavalcanti Gondim
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil.,Post-Graduation Program in Dentistry, Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil
| | - Rafael Francisco Lia Mondelli
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo, SP, Brazil
| | - Lúcio Roberto Cançado Castellano
- Human Immunology Research and Education Group (GEPIH), Technical School of Health of UFPB, Federal University of Paraiba, Joao Pessoa, PB, Brazil
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Ivanoska-Dacikj A, Bogoeva-Gaceva G, Krumme A, Tarasova E, Scalera C, Stojkovski V, Gjorgoski I, Ristoski T. Biodegradable polyurethane/graphene oxide scaffolds for soft tissue engineering: in vivo behavior assessment. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1655754] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Aleksandra Ivanoska-Dacikj
- Research Center for Environment and Materials, Academy of Sciences and Arts of the Republic of North Macedonia, Skopje, North Macedonia
| | - Gordana Bogoeva-Gaceva
- Research Center for Environment and Materials, Academy of Sciences and Arts of the Republic of North Macedonia, Skopje, North Macedonia
- Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University, Skopje, North Macedonia
| | - Andres Krumme
- Department of Polymer Materials, Tallinn University of Technology, Tallinn, Estonia
| | - Elvira Tarasova
- Department of Polymer Materials, Tallinn University of Technology, Tallinn, Estonia
| | | | - Velimir Stojkovski
- Faculty of Veterinary Medicine, Ss. Cyril and Methodius University, Skopje, North Macedonia
| | - Icko Gjorgoski
- Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia
| | - Trpe Ristoski
- Faculty of Veterinary Medicine, Ss. Cyril and Methodius University, Skopje, North Macedonia
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27
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Lyubov DM, Tolpygin AO, Trifonov AA. Rare-earth metal complexes as catalysts for ring-opening polymerization of cyclic esters. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.04.013] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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28
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Contardi M, Alfaro-Pulido A, Picone P, Guzman-Puyol S, Goldoni L, Benítez JJ, Heredia A, Barthel MJ, Ceseracciu L, Cusimano G, Brancato OR, Di Carlo M, Athanassiou A, Heredia-Guerrero JA. Low molecular weight ε-caprolactone-p-coumaric acid copolymers as potential biomaterials for skin regeneration applications. PLoS One 2019; 14:e0214956. [PMID: 30958838 PMCID: PMC6453441 DOI: 10.1371/journal.pone.0214956] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 03/23/2019] [Indexed: 01/05/2023] Open
Abstract
ε-caprolactone-p-coumaric acid copolymers at different mole ratios (ε-caprolactone:p-coumaric acid 1:0, 10:1, 8:1, 6:1, 4:1, and 2:1) were synthesized by melt-polycondensation and using 4-dodecylbenzene sulfonic acid as catalyst. Chemical analysis by NMR and GPC showed that copolyesters were formed with decreasing molecular weight as p-coumaric acid content was increased. Physical characteristics, such as thermal and mechanical properties, as well as water uptake and water permeability, depended on the mole fraction of p-coumaric acid. The p-coumarate repetitive units increased the antioxidant capacity of the copolymers, showing antibacterial activity against the common pathogen Escherichia coli. In addition, all the synthesized copolyesters, except the one with the highest concentration of the phenolic acid, were cytocompatible and hemocompatible, thus becoming potentially useful for skin regeneration applications.
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Affiliation(s)
- Marco Contardi
- Smart Materials, Istituto Italiano di Tecnologia, Genova, Italy
- DIBRIS, University of Genoa, Genoa, Italy
| | | | - Pasquale Picone
- Istituto di Biomedicina ed Immunologia Molecolare "A. Monroy", CNR, Palermo, Italy
| | | | - Luca Goldoni
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Genova, Italy
| | - José J. Benítez
- Instituto de Ciencia de Materiales de Sevilla, Centro mixto CSIC-Universidad de Sevilla, Isla de la Cartuja, Sevilla, Spain
| | - Antonio Heredia
- Instituto de Hortofruticultura Subtropical y Mediterránea (IHSM), La Mayora Universidad de Málaga-CSIC Algarrobo-Costa, Málaga, Spain
- Departamento de Biología Molecular y Bioquímica, Universidad de Málaga, Málaga, Spain
| | - Markus J. Barthel
- Nanomaterials for Biomedical Applications, Istituto Italiano di Tecnologia, Genova, Italy
| | - Luca Ceseracciu
- Materials Characterization Facility, Istituto Italiano di Tecnologia, Genova, Italy
| | - Giovanni Cusimano
- Istituto di Biomedicina ed Immunologia Molecolare "A. Monroy", CNR, Palermo, Italy
| | | | - Marta Di Carlo
- Istituto di Biomedicina ed Immunologia Molecolare "A. Monroy", CNR, Palermo, Italy
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Wang L, Cao W, Wang X, Li P, Zhou J, Zhang G, Li X, Xing X. Biodegradable silver-loaded polycation modified nanodiamonds/polyurethane scaffold with improved antibacterial and mechanical properties for cartilage tissue repairing. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:41. [PMID: 30919092 DOI: 10.1007/s10856-019-6244-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 03/09/2019] [Indexed: 06/09/2023]
Abstract
For cartilage tissue repairing, it remains a key challenge to design implant materials with antibacterial activity, proper degradation rate and mechanical property. In this research, antibacterial nanodiamonds (QND, QND-Ag) modified acrylate-terminated polyurethanes (APU) were prepared. By the addition of nanocomposites, the crystallinity of modified APU obviously increased, which indicates a strong interaction between NDs and APU. Tensile and compression tests were carried out to evaluate the improved mechanical properties. Compared with APU, APU(10%PEG)/QND-Ag possessed the increased modulus and strength, a nevertheless slight decrease in elongation at break. Due to the dual actions of contact-killing of cationic polymers and release-killing of the Ag NPs, QND-Ag-containing polyurethane showed excellent antibacterial activity against Staphylococcus aureus. Moreover, APU containing polyethylene glycol showed a significant increase in degradability rates. Consequently, owing to the dual effect of crystallinity and hydrophilicity, our modified APU exhibited the proper degradation rate adaptable to the healing rate of cartilage tissue. Furthermore, the CCK-8 results demonstrated that synthesized samples were low toxic. Therefore, APU(10%PEG)/QND-Ag holds great promise for the application of cartilage tissue repairing.
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Affiliation(s)
- Lina Wang
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Weiwei Cao
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Xi Wang
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Peili Li
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Jie Zhou
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Gaoke Zhang
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Xin Li
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China
| | - Xiaodong Xing
- College of Chemical Engineering, Nanjing University of Science and Technology, 210094, Nanjing, China.
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Pappalardo D, Mathisen T, Finne-Wistrand A. Biocompatibility of Resorbable Polymers: A Historical Perspective and Framework for the Future. Biomacromolecules 2019; 20:1465-1477. [PMID: 30855137 DOI: 10.1021/acs.biomac.9b00159] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The history of resorbable polymers containing glycolide, lactide, ε-caprolactone and trimethylene carbonate, with a special emphasis being placed on the time frame of the 1960s-1990s is described. Reviewing the history is valuable when looking into the future perspectives regarding how and where these monomers should be used. This story includes scientific evaluations indicating that these polymers are safe to use in medical devices, while the design of the medical device is not considered in this report. In particular, we present the data regarding the tissue response to implanted polymers, as well as the toxicity and pharmacokinetics of their degradation products. In the translation of these polymers from "the bench to the bedside," various challenges have been faced by surgeons, medical doctors, biologists, material engineers and polymer chemists. This Perspective highlights the visionary role played by the pioneers, addressing the problems that occurred on a case by case basis in translational medicine.
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Affiliation(s)
- Daniela Pappalardo
- Department of Science and Technology , University of Sannio , via dei Mulini , 82100 Benevento , Italy
| | | | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology , KTH Royal Institute of Technology , 114 28 Stockholm , Sweden
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31
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Zheng F, Lawrence NS, Hartshorne RS, Fisher AC. Voltammetric and electrosynthetic triggered gel formation. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Shirdar MR, Farajpour N, Shahbazian-Yassar R, Shokuhfar T. Nanocomposite materials in orthopedic applications. Front Chem Sci Eng 2019. [DOI: 10.1007/s11705-018-1764-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Schäfer PM, McKeown P, Fuchs M, Rittinghaus RD, Hermann A, Henkel J, Seidel S, Roitzheim C, Ksiazkiewicz AN, Hoffmann A, Pich A, Jones MD, Herres-Pawlis S. Tuning a robust system: N,O zinc guanidine catalysts for the ROP of lactide. Dalton Trans 2019; 48:6071-6082. [PMID: 30758389 DOI: 10.1039/c8dt04938f] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Non-toxic, highly active and robust complexes are the holy grail as ideal green catalysts for the polymerisation of biorenewable and biodegradable polylactide. Four new zinc guanidine complexes [ZnCl2(TMG4NMe2asme)], [ZnCl2(TMG5Clasme)], [ZnCl2(TMG5Measme)] and [ZnCl2(TMG5NMe2asme)] with different electron-donating and electron-withdrawing groups on the ligand's aromatic backbone have been synthesised. Ligands are derived from low-cost commercially available compounds and have been converted by a three- or four-step synthesis process into the desired ligand in good yields. The compounds have been fully characterised and tested in the ROP of rac-LA under industrially relevant conditions. The complexes are based on the recently published structure [ZnCl2(TMGasme)] which has shown high activity in the polymerisation of lactide at 150 °C. Different substituents in the para-position of the guanidine moiety significantly increase the polymerisation rate whereas positioning substituents in the meta-position causes no change in the reaction rate. With molecular weights over 71 000 g mol-1 being achievable, the best system produces polymers for multiple industrial applications and its polymerisation rate approaches that of Sn(Oct)2. The robust systems are able to polymerise non-purified lactide. The initiation of the polymerisation is suggested to occur due to impurities in the monomer.
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Affiliation(s)
- Pascal M Schäfer
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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Meireles AB, Corrêa DK, da Silveira JVW, Millás ALG, Bittencourt E, de Brito-Melo GEA, González-Torres LA. Trends in polymeric electrospun fibers and their use as oral biomaterials. Exp Biol Med (Maywood) 2018; 243:665-676. [PMID: 29763386 PMCID: PMC6378505 DOI: 10.1177/1535370218770404] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Electrospinning is one of the techniques to produce structured polymeric fibers in the micro or nano scale and to generate novel materials for biomedical proposes. Electrospinning versatility provides fibers that could support different surgical and rehabilitation treatments. However, its diversity in equipment assembly, polymeric materials, and functional molecules to be incorporated in fibers result in profusion of recent biomaterials that are not fully explored, even though the recognized relevance of the technique. The present article describes the main electrospun polymeric materials used in oral applications, and the main aspects and parameters of the technique. Natural and synthetic polymers, blends, and composites were identified from the available literature and recent developments. Main applications of electrospun fibers were focused on drug delivery systems, tissue regeneration, and material reinforcement or modification, although studies require further investigation in order to enable direct use in human. Current and potential usages as biomaterials for oral applications must motivate the development in the use of electrospinning as an efficient method to produce highly innovative biomaterials, over the next few years. Impact statement Nanotechnology is a challenge for many researchers that look for obtaining different materials behaviors by modifying characteristics at a very low scale. Thus, the production of nanostructured materials represents a very important field in bioengineering, in which the electrospinning technique appears as a suitable alternative. This review discusses and provides further explanation on this versatile technique to produce novel polymeric biomaterials for oral applications. The use of electrospun fibers is incipient in oral areas, mainly because of the unfamiliarity with the technique. Provided disclosure, possibilities and state of the art are aimed at supporting interested researchers to better choose proper materials, understand, and design new experiments. This work seeks to encourage many other researchers-Dentists, Biologists, Engineers, Pharmacists-to develop innovative materials from different polymers. We highlight synthetic and natural polymers as trends in treatments to motivate an advance in the worldwide discussion and exploration of this interdisciplinary field.
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Affiliation(s)
- Agnes B Meireles
- Pharmacy Department, Laboratory of Immunology, UFVJM and PPGCF-UFVJM, Diamantina, MG 39100-000, Brazil
| | - Daniella K Corrêa
- Institute of Science and Technology – UFVJM, Diamantina, MG 39100-000, Brazil
| | - João VW da Silveira
- Institute of Science and Technology – UFVJM, Diamantina, MG 39100-000, Brazil
| | - Ana LG Millás
- Chemical Engineering Department, UNICAMP, Campinas, SP 13083-852, Brazil
| | - Edison Bittencourt
- Chemical Engineering Department, UNICAMP, Campinas, SP 13083-852, Brazil
| | - Gustavo EA de Brito-Melo
- Pharmacy Department, Laboratory of Immunology, UFVJM and PPGCF-UFVJM, Diamantina, MG 39100-000, Brazil
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Rodríguez-Méndez I, Fernández-Gutiérrez M, Rodríguez-Navarrete A, Rosales-Ibáñez R, Benito-Garzón L, Vázquez-Lasa B, San Román J. Bioactive Sr(II)/Chitosan/Poly(ε-caprolactone) Scaffolds for Craniofacial Tissue Regeneration. In Vitro and In Vivo Behavior. Polymers (Basel) 2018; 10:E279. [PMID: 30966314 PMCID: PMC6415099 DOI: 10.3390/polym10030279] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 02/23/2018] [Accepted: 03/02/2018] [Indexed: 01/16/2023] Open
Abstract
In craniofacial tissue regeneration, the current gold standard treatment is autologous bone grafting, however, it presents some disadvantages. Although new alternatives have emerged there is still an urgent demand of biodegradable scaffolds to act as extracellular matrix in the regeneration process. A potentially useful element in bone regeneration is strontium. It is known to promote stimulation of osteoblasts while inhibiting osteoclasts resorption, leading to neoformed bone. The present paper reports the preparation and characterization of strontium (Sr) containing hybrid scaffolds formed by a matrix of ionically cross-linked chitosan and microparticles of poly(ε-caprolactone) (PCL). These scaffolds of relatively facile fabrication were seeded with osteoblast-like cells (MG-63) and human bone marrow mesenchymal stem cells (hBMSCs) for application in craniofacial tissue regeneration. Membrane scaffolds were prepared using chitosan:PCL ratios of 1:2 and 1:1 and 5 wt % Sr salts. Characterization was performed addressing physico-chemical properties, swelling behavior, in vitro biological performance and in vivo biocompatibility. Overall, the composition, microstructure and swelling degree (≈245%) of scaffolds combine with the adequate dimensional stability, lack of toxicity, osteogenic activity in MG-63 cells and hBMSCs, along with the in vivo biocompatibility in rats allow considering this system as a promising biomaterial for the treatment of craniofacial tissue regeneration.
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Affiliation(s)
- Itzia Rodríguez-Méndez
- Faculty of Chemistry, Autonomous University of San Luis Potosi, San Luis Potosi 6, Salvador Nava Martínez, 78210 San Luis, S.L.P., Mexico.
| | - Mar Fernández-Gutiérrez
- Institute of Polymer Science and Technology, ICTP-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER, Carlos III Health Institute, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
| | - Amairany Rodríguez-Navarrete
- Faculty of Higher Studies, National Autonomous University of Mexico, Av. Chalma s/n Col. La Pastora, Cuautepec Barrio Bajo. Delegación Gustavo A. Madero, Ciudad de México 07160, Mexico.
| | - Raúl Rosales-Ibáñez
- Faculty of Higher Studies, National Autonomous University of Mexico, Av. Chalma s/n Col. La Pastora, Cuautepec Barrio Bajo. Delegación Gustavo A. Madero, Ciudad de México 07160, Mexico.
| | - Lorena Benito-Garzón
- Faculty of Medicine, University of Salamanca, C/Alfonso X el Sabio, s/n, 37007 Salamanca, Spain.
| | - Blanca Vázquez-Lasa
- Institute of Polymer Science and Technology, ICTP-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER, Carlos III Health Institute, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
| | - Julio San Román
- Institute of Polymer Science and Technology, ICTP-CSIC, C/Juan de la Cierva 3, 28006 Madrid, Spain.
- CIBER, Carlos III Health Institute, C/Monforte de Lemos 3-5, Pabellón 11, 28029 Madrid, Spain.
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Abubekerov M, Wei J, Swartz KR, Xie Z, Pei Q, Diaconescu PL. Preparation of multiblock copolymers via step-wise addition of l-lactide and trimethylene carbonate. Chem Sci 2018; 9:2168-2178. [PMID: 29719690 PMCID: PMC5903370 DOI: 10.1039/c7sc04507g] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/10/2018] [Indexed: 01/14/2023] Open
Abstract
The synthesis of up to pentablock copolymers from various combinations of l-lactide and trimethylene carbonate was accomplished using a dinuclear zinc complex, and the physical, thermal, and mechanical properties of the resulting copolymers evaluated.
Poly(l-lactide) (PLA) is a bioderived and biodegradable polymer that has limited applications due to its hard and brittle nature. Incorporation of 1,3-trimethylene carbonate into PLA, in a block copolymer fashion, improves the mechanical properties, while retaining the biodegradability of the polymer, and broadens its range of applications. However, the preparation of 1,3-trimethylene carbonate (TMC)/l-lactide (LA) copolymers beyond diblock and triblock structures has not been reported, with explanations focusing mostly on thermodynamic reasons that impede the copolymerization of TMC after lactide. We discuss the preparation of multiblock copolymers via the ring opening polymerization (ROP) of LA and TMC, in a step-wise addition, by a ferrocene-chelating heteroscorpionate zinc complex, {[fc(PPh2)(BH[(3,5-Me)2pz]2)]Zn(μ-OCH2Ph)}2 ([(fcP,B)Zn(μ-OCH2Ph)]2, fc = 1,1′-ferrocenediyl, pz = pyrazole). The synthesis of up to pentablock copolymers, from various combinations of LA and TMC, was accomplished and the physical, thermal, and mechanical properties of the resulting copolymers evaluated.
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Affiliation(s)
- Mark Abubekerov
- Department of Chemistry and Biochemistry , University of California , Los Angeles , CA 90095 , USA .
| | - Junnian Wei
- Department of Chemistry and Biochemistry , University of California , Los Angeles , CA 90095 , USA .
| | - Kevin R Swartz
- Department of Chemistry and Biochemistry , University of California , Los Angeles , CA 90095 , USA .
| | - Zhixin Xie
- Department of Materials Science and Engineering , University of California , Los Angeles , CA 90095 , USA
| | - Qibing Pei
- Department of Materials Science and Engineering , University of California , Los Angeles , CA 90095 , USA
| | - Paula L Diaconescu
- Department of Chemistry and Biochemistry , University of California , Los Angeles , CA 90095 , USA .
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Jamal M, Greish Y, Chogle S, Goodis H, Karam SM. Growth and Differentiation of Dental Stem Cells of Apical Papilla on Polycaprolactone Scaffolds. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1077:31-40. [PMID: 30357682 DOI: 10.1007/978-981-13-0947-2_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Biodegradable scaffolds are useful tools in the field of tissue engineering and regenerative medicine. The aim of this study was to test the potential of the human stem cells of apical papilla (SCAP) to attach, proliferate and differentiate on a polycaprolactone (PCL)-based scaffolds. SCAP were extracted from the root apical papillae of freshly extracted immature premolar teeth by using enzymatic digestion. Porous PCL scaffolds were fabricated using particle leaching method and NaCl or mannitol as porogens. SCAP of passage 3 were seeded on non-porous and porous PCL scaffolds for up to 14 days. For control, cells were cultured on glass coverslips. Picogreen DNA quantification was used to assay for cell proliferation. Cell differentiation and development of calcification nodules were examined using scanning electron microscopy and alizarin red staining. SCAP showed a comparable attachment, growth and proliferation patterns on PCL scaffolds and coverslips. Cell proliferation was enhanced on mannitol scaffolds at all time points. Calcification nodules were detected in all PCL scaffolds while it was not present on glass coverslips. These nodules were detected on NaCl-scaffolds by day 7 and on mannitol and non-porous scaffolds by day 14. In conclusion, SCAP were able to attach, proliferate and differentiate on PCL scaffolds without using any inductive media, indicating their potential application for dental tissue regeneration.
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Affiliation(s)
- Mohamed Jamal
- Department of Anatomy, College of Medicine and Health Sciences, UAE University, Al-Ain, United Arab Emirates
- Department of Endodontics, Hamdan Bin Mohamed College of Dental Medicine, Mohamed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Yaser Greish
- Department of Chemistry, College of Science, UAE University, Al-Ain, United Arab Emirates
| | - Sami Chogle
- Department of Endodontics, Henry M. Goldman School of Dental Medicine, Boston University, Boston, MA, USA
| | - Harold Goodis
- Department of Preventive & Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, CA, USA
| | - Sherif M Karam
- Department of Anatomy, College of Medicine and Health Sciences, UAE University, Al-Ain, United Arab Emirates.
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38
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Reactivity of Zinc Halide Complexes Containing Camphor-Derived Guanidine Ligands with Technical rac-Lactide. INORGANICS 2017. [DOI: 10.3390/inorganics5040085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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39
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Kaczmarek B, Sionkowska A. Chitosan/collagen blends with inorganic and organic additive-A review. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21912] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- B. Kaczmarek
- Department of Chemistry of Biomaterials and Cosmetics; Faculty of Chemistry; Nicolaus Copernicus University in Toruń; Toruń Poland
| | - A. Sionkowska
- Department of Chemistry of Biomaterials and Cosmetics; Faculty of Chemistry; Nicolaus Copernicus University in Toruń; Toruń Poland
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Schäfer PM, Fuchs M, Ohligschläger A, Rittinghaus R, McKeown P, Akin E, Schmidt M, Hoffmann A, Liauw MA, Jones MD, Herres-Pawlis S. Highly Active N,O Zinc Guanidine Catalysts for the Ring-Opening Polymerization of Lactide. CHEMSUSCHEM 2017; 10:3547-3556. [PMID: 28779508 DOI: 10.1002/cssc.201701237] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/04/2017] [Indexed: 06/07/2023]
Abstract
New zinc guanidine complexes with N,O donor functionalities were prepared, characterized by X-Ray crystallography, and examined for their catalytic activity in the solvent-free ring-opening polymerization (ROP) of technical-grade rac-lactide at 150 °C. All complexes showed a high activity. The fastest complex [ZnCl2 (DMEGasme)] (C1) produced colorless poly(lactide) (PLA) after 90 min with a conversion of 52 % and high molar masses (Mw =69 100, polydispersity=1.4). The complexes were tested with different monomer-to-initiator ratios to determine the rate constant kp . Furthermore, a polymerization with the most active complex C1 was monitored by in situ Raman spectroscopy. Overall, conversion of up to 90 % can be obtained. End-group analysis was performed to clarify the mechanism. All four complexes combine robustness against impurities in the lactide with high polymerization rates, and they represent the fastest robust lactide ROP catalysts to date, opening new avenues to a sustainable ROP catalyst family for industrial use.
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Affiliation(s)
- Pascal M Schäfer
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Martin Fuchs
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Andreas Ohligschläger
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - Ruth Rittinghaus
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Paul McKeown
- Department of Chemistry, University of Bath, ClavertonDown, Bath, BA2 7AY, UK
| | - Enver Akin
- Fakultät für Naturwissenschaften, Department Chemie, Universität Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany
| | - Maximilian Schmidt
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Alexander Hoffmann
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Marcel A Liauw
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - Matthew D Jones
- Department of Chemistry, University of Bath, ClavertonDown, Bath, BA2 7AY, UK
| | - Sonja Herres-Pawlis
- Institut für Anorganische Chemie, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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Hajiali F, Tajbakhsh S, Shojaei A. Fabrication and Properties of Polycaprolactone Composites Containing Calcium Phosphate-Based Ceramics and Bioactive Glasses in Bone Tissue Engineering: A Review. POLYM REV 2017. [DOI: 10.1080/15583724.2017.1332640] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Faezeh Hajiali
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Saeid Tajbakhsh
- College of Chemical Engineering, University of Tehran, Tehran, Iran
| | - Akbar Shojaei
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
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42
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Anker M, Balasanthiran C, Balasanthiran V, Chisholm MH, Jayaraj S, Mathieu K, Piromjitpong P, Praban S, Raya B, Simonsick WJ. A new route for the preparation of enriched iso-polylactide from rac-lactide via a Lewis acid catalyzed ring-opening of an epoxide. Dalton Trans 2017; 46:5938-5945. [DOI: 10.1039/c6dt03198f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Al(iii) acts as a Lewis acid for the ring-opening of an epoxide by Cl− attack and this yields stereo selective ring-opening polymerization of rac-lactide to yield iso-polylactide.
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Affiliation(s)
- Mathew Anker
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | | | | | - Malcolm H. Chisholm
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | - Savithra Jayaraj
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | - Kaleb Mathieu
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | | | - Siriwan Praban
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | - Balaram Raya
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
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43
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Jahnavi S, Saravanan U, Arthi N, Bhuvaneshwar GS, Kumary TV, Rajan S, Verma RS. Biological and mechanical evaluation of a Bio-Hybrid scaffold for autologous valve tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:59-71. [PMID: 28183649 DOI: 10.1016/j.msec.2016.11.116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/10/2016] [Accepted: 11/23/2016] [Indexed: 10/20/2022]
Abstract
Major challenge in heart valve tissue engineering for paediatric patients is the development of an autologous valve with regenerative capacity. Hybrid tissue engineering approach is recently gaining popularity to design scaffolds with desired biological and mechanical properties that can remodel post implantation. In this study, we fabricated aligned nanofibrous Bio-Hybrid scaffold made of decellularized bovine pericardium: polycaprolactone-chitosan with optimized polymer thickness to yield the desired biological and mechanical properties. CD44+, αSMA+, Vimentin+ and CD105- human valve interstitial cells were isolated and seeded on these Bio-Hybrid scaffolds. Subsequent biological evaluation revealed interstitial cell proliferation with dense extra cellular matrix deposition that indicated the viability for growth and proliferation of seeded cells on the scaffolds. Uniaxial mechanical tests along axial direction showed that the Bio-Hybrid scaffolds has at least 20 times the strength of the native valves and its stiffness is nearly 3 times more than that of native valves. Biaxial and uniaxial mechanical studies on valve interstitial cells cultured Bio-Hybrid scaffolds revealed that the response along the axial and circumferential direction was different, similar to native valves. Overall, our findings suggest that Bio-Hybrid scaffold is a promising material for future development of regenerative heart valve constructs in children.
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Affiliation(s)
- S Jahnavi
- Stem Cell and Molecular Biology Laboratory, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, TN 600036, India; Tissue Culture Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Trivandrum, Kerala 695012, India
| | - U Saravanan
- Department of Civil Engineering, Indian Institute of Technology Madras, Chennai, TN 600036, India
| | - N Arthi
- Stem Cell and Molecular Biology Laboratory, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, TN 600036, India
| | - G S Bhuvaneshwar
- Department of Engineering Design, Indian Institute of Technology Madras, Chennai, TN 600036, India
| | - T V Kumary
- Tissue Culture Laboratory, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Poojappura, Trivandrum, Kerala 695012, India
| | - S Rajan
- Madras Medical Mission, Institute of Cardio-Vascular Diseases, Mogappair, Chennai, Tamil Nadu 600037, India
| | - R S Verma
- Stem Cell and Molecular Biology Laboratory, Department of Biotechnology, Indian Institute of Technology Madras, Chennai, TN 600036, India.
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44
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Effect of molecular weight on the physical properties of poly(ethylene brassylate) homopolymers. J Mech Behav Biomed Mater 2016; 64:209-19. [DOI: 10.1016/j.jmbbm.2016.07.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/22/2016] [Accepted: 07/27/2016] [Indexed: 11/23/2022]
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45
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Abstract
Tissue engineering aims to repair the damaged tissue by transplantation of cells or introducing bioactive factors in a biocompatible scaffold. In recent years, biodegradable polymer scaffolds mimicking the extracellular matrix have been developed to promote the cell proliferation and extracellular matrix deposition. The biodegradable polymer scaffolds thus act as templates for tissue repair and regeneration. This article reviews the updated information regarding various types of natural and synthetic biodegradable polymers as well as their functions, physico-chemical properties, and degradation mechanisms in the development of biodegradable scaffolds for tissue engineering applications, including their combination with 3D printing.
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Affiliation(s)
- Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan, ROC.
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46
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Regulating temporospatial dynamics of morphogen for structure formation of the lacrimal gland by chitosan biomaterials. Biomaterials 2016; 113:42-55. [PMID: 27810641 DOI: 10.1016/j.biomaterials.2016.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 10/09/2016] [Accepted: 10/11/2016] [Indexed: 11/23/2022]
Abstract
The lacrimal gland is an important organ responsible for regulating tear synthesis and secretion. The major work of lacrimal gland (LG) is to lubricate the ocular surface and maintain the health of eyes. Functional deterioration of the lacrimal gland happens because of aging, diseases, or therapeutic complications, but without effective treatments till now. The LG originates from the epithelium of ocular surface and develops by branching morphogenesis. To regenerate functional LGs, it is required to explore the way of recapitulating and facilitating the organ to establish the intricate and ramified structure. In this study, we proposed an approach using chitosan biomaterials to create a biomimetic environment beneficial to the branching structure formation of developing LG. The morphogenetic effect of chitosan was specific and optimized to promote LG branching. With chitosan, increase in temporal expression and local concentration of endogenous HGF-related molecules creates an environment around the emerging tip of LG epithelia. By efficiently enhancing downstream signaling of HGF pathways, the cellular activities and behaviors were activated to contribute to LG branching morphogenesis. The morphogenetic effect of chitosan was abolished by either ligand or receptor deprivation, or inhibition of downstream signaling transduction. Our results elucidated the underlying mechanism accounting for chitosan morphogenetic effects on LG, and also proposed promising approaches with chitosan to assist tissue structure formation of the LG.
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47
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Turowec BA, Gillies ER. Synthesis, properties and degradation of polyisobutylene-polyester graft copolymers. POLYM INT 2016. [DOI: 10.1002/pi.5250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bethany A Turowec
- Biomedical Engineering Graduate Program; University of Western Ontario, 1151 Richmond Street; London Canada N6A 5B9
| | - Elizabeth R Gillies
- Department of Chemical and Biochemical Engineering; University of Western Ontario, 1151 Richmond Street; London Canada N6A 5B9
- Department of Chemistry and Center for Advanced Materials and Biomaterials Research (CAMBR); University of Western Ontario, 1151 Richmond Street; London Canada N6A 5B7
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48
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Suwantong O. Biomedical applications of electrospun polycaprolactone fiber mats. POLYM ADVAN TECHNOL 2016. [DOI: 10.1002/pat.3876] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Orawan Suwantong
- School of Science; Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
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49
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Khakbaz M, Hejazi I, Seyfi J, Davachi SM, Jafari SH, Khonakdar HA. Study on the effects of non-solvent and nanoparticle concentrations on surface properties of water-repellent biocompatible l-lactide/glycolide/trimethylene carbonate terpolymers. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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50
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Cruz ML, Gil MH. Antituberculosis Macromolecular Prodrugs: Part 1: Isoniazid Conjugates with Poly(Ethylene Glycol) Derivatives. J BIOACT COMPAT POL 2016. [DOI: 10.1177/088391159801300206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The synthesis, elemental and spectrometric analysis of isoniazid conjugates with polyethylene glycol) (PEG) were obtained. In the first part of the work, acyl isoniazid, hydroxymethyl isoniazid, and modified poly(ethylene glycol) were synthesized. These compounds were characterized by FTIR, by elemental analysis, and by NMR. To obtain antituberculosis macromolecular prodrugs with sustained delivery, the modified PEG were used as carriers by linking, via end group, either isoniazid or its hydroxymethyl derivative.
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Affiliation(s)
- M. L. Cruz
- Department of Pharmacy, Faculty of Medical Sciences, PUCCAMI? 13059-740, Campinas, SP, Brazil
| | - M. H. Gil
- Department of Chemical Engineering, FCTUC, University of Coimbra, 3000 Coimbra, Portugal
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