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Ma L, Shi T, Liu X, Wang X, Zhang X. Structural properties of HPMC/PEG/CS thermosensitive porous hydrogels. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04576-6] [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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2
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Woźniak A, Biernat M. Methods for crosslinking and stabilization of chitosan structures for potential medical applications. J BIOACT COMPAT POL 2022. [DOI: 10.1177/08839115221085738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Chitosan is a well-known polymer widely used in tissue engineering and regenerative medicine. It is biocompatible, biodegradable, non-toxic, has antibacterial and osteoconductive properties. Chitosan is often used in the form of composites (with the participation of ceramic particles), membranes, hydrogels or nanoparticles. The problem with biomaterials is their low durability, rapid degradation, poor mechanical properties and cytotoxicity. Cross-linking or stabilization of such materials allows for solving these problems. It is important that the compounds used for this purpose exhibit limited or no toxicity. The presented article is a review and presents some methods of cross-linking/stabilization of chitosan structures. The analysis concerns low or non-cytotoxic cross-linking/stabilization methods. The discussed compounds used for the purpose of chitosan structure fixation are: cinnamaldehyde, genipin, L-aspartic acid, vanillin, sodium carbonate, sodium alginate, BGP, ethanol and TPP. There is discussed also a hydrothermal/dehydrothermal method which seems to be promising as it is more advantageous since no additional compounds are introduced into the structure.
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Affiliation(s)
- Anna Woźniak
- Biomaterials Research Group, Lukasiewicz Research Network—Institute of Ceramics and Building Materials, Ceramics and Concrete Division in Warsaw, Warsaw, Poland
| | - Monika Biernat
- Biomaterials Research Group, Lukasiewicz Research Network—Institute of Ceramics and Building Materials, Ceramics and Concrete Division in Warsaw, Warsaw, Poland
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Xing F, Chi Z, Yang R, Xu D, Cui J, Huang Y, Zhou C, Liu C. Chitin-hydroxyapatite-collagen composite scaffolds for bone regeneration. Int J Biol Macromol 2021; 184:170-180. [PMID: 34052273 DOI: 10.1016/j.ijbiomac.2021.05.019] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 04/19/2021] [Accepted: 05/02/2021] [Indexed: 01/01/2023]
Abstract
Bone defect is usually difficult to recover quickly, and bone scaffold transplantation is considered to be an effective method. Biomaterials have a wide range of application prospects in bone tissue repair, and the two key problems are the selection of materials and cells. The object of this study was to discuss the structural characteristics of bone scaffold materials and their effects on bone repair in vivo. The chitin-hydroxyapatite (HAP)-collagen composite scaffolds (CHCS) was prepared with epichlorohydrin (ECH) as crosslinking agent. The structure was characterized and the compressive strength, porosity, water absorbency and stability were investigated. The biocompatibility and osteogenic differentiation of CHCS in vitro were detected, and the effect of defect repair in vivo was evaluated. The results suggested that HAP not only enhanced the compressive strength of CHCS, but also promoted the formation of calcium nodules due to its bone conductivity. Histological staining showed that collagen promoted collagen deposition and new bone formation. X-ray images also indicated that CHCS transplantation accelerated bone repair. Therefore, CHCs has immense potential in bone regeneration.
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Affiliation(s)
- Fei Xing
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China
| | - Zhe Chi
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China
| | - Rongxue Yang
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China
| | - Derong Xu
- The Affiliated Hospital of Qingdao University, 266000 Qingdao, China
| | - Jiufa Cui
- The Affiliated Hospital of Qingdao University, 266000 Qingdao, China
| | - Yufen Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, 30013 Hsinchu, Taiwan, Republic of China
| | - Chuanli Zhou
- The Affiliated Hospital of Qingdao University, 266000 Qingdao, China.
| | - Chenguang Liu
- College of Marine Life Sciences, Ocean University of China, 266003 Qingdao, China.
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Influence of Glycerophosphate Salt Solubility on the Gelation Mechanism of Colloidal Chitosan Systems. Int J Mol Sci 2021; 22:ijms22084043. [PMID: 33919873 PMCID: PMC8070819 DOI: 10.3390/ijms22084043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 12/12/2022] Open
Abstract
Recently, thermosensitive chitosan systems have attracted the interest of many researchers due to their growing application potential. Nevertheless, the mechanism of the sol-gel phase transition is still being discussed, and the glycerophosphate salt role is ambiguous. The aim of the work is to analyze the possibility of the exclusive use of a non-sodium glycerophosphate salt and to determine its impact on the gelation conditions determined by rheological and turbidimetric measurements as well as the stability of the systems by measuring changes in the Zeta potential value. It was found that ensuring the same proportions of glycerophosphate ions differing in cation to amino groups present in chitosan chains, leads to obtaining systems significantly different in viscoelastic properties and phase transition conditions. It was clearly shown that the systems with the calcium glycerophosphate, the insoluble form of which may constitute additional aggregation nuclei, undergo the gelation the fastest. The use of magnesium glycerophosphate salt delays the gelation due to the heat-induced dissolution of the salt. Thus, it was unequivocally demonstrated that the formulation of the gelation mechanism of thermosensitive chitosan systems based solely on the concentration of glycerophosphate without discussing its type is incorrect.
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Scalzone A, Ferreira AM, Tonda-Turo C, Ciardelli G, Dalgarno K, Gentile P. The interplay between chondrocyte spheroids and mesenchymal stem cells boosts cartilage regeneration within a 3D natural-based hydrogel. Sci Rep 2019; 9:14630. [PMID: 31601910 PMCID: PMC6787336 DOI: 10.1038/s41598-019-51070-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 09/25/2019] [Indexed: 12/30/2022] Open
Abstract
Articular cartilage (AC) lacks the ability to self-repair and cell-based approaches, primarily based on using chondrocytes and mesenchymal stem cells (MSCs), are emerging as effective technology to restore cartilage functionality, because cells synergic functionality may support the maintenance of chondrogenic phenotype and promote extracellular matrix regeneration. This work aims to develop a more physiologically representative co-culture system to investigate the influence of MSCs on the activity of chondrocytes. A thermo-sensitive chitosan-based hydrogel, ionically crosslinked with β-glycerophosphate, is optimised to obtain sol/gel transition at physiological conditions within 5 minutes, high porosity with pores diameter <30 µm, and in vitro mechanical integrity with compressive and equilibrium Young's moduli of 37 kPa and 17 kPa, respectively. Live/dead staining showed that after 1 and 3 days in culture, the encapsulated MSCs into the hydrogels are viable and characterised by round-like morphology. Furthermore chondrocyte spheroids, seeded on top of gels that contained either MSCs or no cells, show that the encapsulated MSCs stimulate chondrocyte activity within a gel co-culture, both in terms of maintaining the coherence of chondrocyte spheroids, leading to a larger quantity of CD44 (by immunofluorescence) and a higher production of collagen and glycosaminoglycans (by histology) compared with the mono-culture.
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Affiliation(s)
- Annachiara Scalzone
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Ana M Ferreira
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Chiara Tonda-Turo
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino Corso Duca degli Abruzzi 29, Turin, 10129, Italy
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino Corso Duca degli Abruzzi 29, Turin, 10129, Italy
| | - Kenny Dalgarno
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom
| | - Piergiorgio Gentile
- School of Engineering, Newcastle University, Claremont Road, Newcastle upon Tyne, NE1 7RU, United Kingdom.
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Design and evaluation of a solid dispersion and thermosensitive hydrogel combined local delivery system of dimethoxycurcumin. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Injectable Chitosan Scaffolds with Calcium β-Glycerophosphate as the Only Neutralizing Agent. Processes (Basel) 2019. [DOI: 10.3390/pr7050297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The presented work describes the method of preparation of thermosensitive chitosan hydrogels using calcium β-glycerophosphate salt as the only pH neutralizing agent and supporting the crosslinking process. The presence of calcium ions instead of sodium ions is particularly important in the case of scaffolds in bone tissue engineering. Rheological and physicochemical properties of low concentrated chitosan solutions with the addition of calcium β-glycerophosphate were investigated using rotational rheometry techniques, Zeta potential (by electrophoresis), XPS, and SEM analysis together with an EDS detector. It was found to be possible to prepare colloidal solutions of chitosan containing only calcium β-glycerophosphate (without sodium ions) undergoing a sol-gel phase transition at the physiological temperature of the human body. It has also been shown that it is possible to further enrich the obtained cellular scaffolds with calcium ions. Using the addition of calcium carbonate, hydrogels with a physiological ratio of calcium to phosphorus (1.6–1.8):1 were obtained.
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Asiri SM, Khan FA, Bozkurt A. Synthesis of chitosan nanoparticles, chitosan-bulk, chitosan nanoparticles conjugated with glutaraldehyde with strong anti-cancer proliferative capabilities. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 46:S1152-S1161. [DOI: 10.1080/21691401.2018.1533846] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sarah Mousa Asiri
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia
| | - Firdos Alam Khan
- Department of Stem Cell Biology, Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ayhan Bozkurt
- Department of Biophysics, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia
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