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Li Q, Sun Y, Zhao H, Zhang F, Guo Y, Chen X, Zhao G. Structure and properties of the acellular porcine cornea irradiated with 60Co-γ and electron beam and its histocompatibility. J Biomed Mater Res A 2024; 112:825-840. [PMID: 38158889 DOI: 10.1002/jbm.a.37663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 08/15/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Acellular porcine cornea (APC) has been used in corneal transplantation and treatment of the corneal diseases. Sterilization is a key step before the application of graft, and irradiation is one of the most commonly used methods. In this paper, APC was prepared by the physical freeze-thawing combined with biological enzymes, and the effects of the electron beam (E-beam) and cobalt 60 (60Co-γ) at the dose of 15 kGy on the physicochemical properties, structure, immunogenicity, and biocompatibility of the APC were investigated. After decellularization, the residual DNA was 20.86 ± 1.02 ng/mg, and the α-Gal clearance rate was more than 99%. Irradiation, especially the 60Co-γ, reduced the cornea's transmittance, elastic modulus, enzymatic hydrolysis rate, swelling ratio, and cross-linking degree. Meanwhile, the diameter and spacing of the collagen fibers increased. In the rat subcutaneous implantation, many inflammatory cells appeared in the unirradiated APC, while the irradiated had good histocompatibility, but the degradation was faster. The lamellar keratoplasty in rabbits indicated that compared to the E-beam, the 60Co-γ damaged the chemical bond of collagen to a larger extent, reduced the content of GAGs, and prolonged the complete epithelization of the grafts. The corneal edema was more serious within 1 month after the surgery. After 2 months, the thickness of the APC with the two irradiation methods tended to be stable, but that in the 60Co-γ group became thinner. The pathological results showed that the collagen structure was looser and the pores were larger, indicating the 60Co-γ had a more extensive effect on the APC than the E-beam at 15 kGy.
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Affiliation(s)
- Qing Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Yajun Sun
- Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao, Shandong, China
| | - Haibin Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Fan Zhang
- Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Yu Guo
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Xin Chen
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Guoqun Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
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Jiang S, Wise SG, Kovacic JC, Rnjak-Kovacina J, Lord MS. Biomaterials containing extracellular matrix molecules as biomimetic next-generation vascular grafts. Trends Biotechnol 2024; 42:369-381. [PMID: 37852854 DOI: 10.1016/j.tibtech.2023.09.009] [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: 08/07/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/20/2023]
Abstract
The performance of synthetic biomaterial vascular grafts for the bypass of stenotic and dysfunctional blood vessels remains an intractable challenge in small-diameter applications. The functionalization of biomaterials with extracellular matrix (ECM) molecules is a promising approach because these molecules can regulate multiple biological processes in vascular tissues. In this review, we critically examine emerging approaches to ECM-containing vascular graft biomaterials and explore opportunities for future research and development toward clinical use.
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Affiliation(s)
- Shouyuan Jiang
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Steven G Wise
- School of Medical Sciences, Faculty of Health and Medicine, University of Sydney, Sydney, NSW 2006, Australia; Charles Perkins Centre, University of Sydney, Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, University of Sydney, Sydney, NSW 2006, Australia
| | - Jason C Kovacic
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia; St Vincent's Clinical School, University of New South Wales, Darlinghurst, NSW 2010, Australia; Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jelena Rnjak-Kovacina
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Megan S Lord
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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Li Q, Sun Y, Zhao H, Gao Z, Zhai D. Structure and properties of the acellular porcine cornea irradiated with electron beam and its in-situ implantation. J Biomed Mater Res B Appl Biomater 2023; 111:2013-2024. [PMID: 37477184 DOI: 10.1002/jbm.b.35301] [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: 11/18/2022] [Revised: 05/15/2023] [Accepted: 07/07/2023] [Indexed: 07/22/2023]
Abstract
Different sterilization doses of the electron beam (E-beam) will change the properties of biomaterials and affect their clinical application. Acellular porcine cornea (APC) is a promising corneal substitute to alleviate the shortage of corneal resources. The residual DNA was significantly reduced to 18.50 ± 3.19 ng/mg, and the clearance rate of α-Gal was close to 100% after the treatment with freezing-thawing combined enzyme, indicating that the decellularization was effective. The effects of different E-beam doses at 0, 2, 8, 15, and 25 kGy on the APC were studied. With the increase in irradiation dose, the transmittance, tensile strength, and swelling ratio of APC gradually decreased, but the resistance to enzymatic degradation was stronger than that of non-irradiated APC, especially at 8 kGy. The structure of APC was denser after irradiation, but the dose of 25 kGy could cause partial collagen fiber fracture and increase the pore size. The cell viability of the APC irradiated by 15 and 25 kGy were greater than 80%. After the implantation in rabbit corneas, there was no obvious neovascularization and inflammation, but the dose of 25 kGy had a more destructive effect on the chemical bonds of collagen, which made the APC easier to be degraded. The thickness of APC in the 25 kGy group was thinner than that in the 15 kGy group 1 year after surgery, and the epithelium grew more slowly, so the E-beam dose of 15 kGy might be more suitable for the sterilization of APC.
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Affiliation(s)
- Qing Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Yajun Sun
- Research and Development Center, Qingdao Chunghao Tissue Engineering Co., Ltd., Qingdao, Shandong, China
| | - Haibin Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Zhiyong Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
| | - Dongjie Zhai
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan, Shandong, China
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da Costa Borges MA, Sorigotti AR, Paschoalin RT, Júnior JAP, da Silva LHD, Dias DS, Ribeiro CA, de Araújo ES, Resende FA, da Silva Barud H. Self-Supported Biopolymeric Films Based on Onion Bulb ( Allium cepa L.): Gamma-Radiation Effects in Sterilizing Doses. Polymers (Basel) 2023; 15:polym15040914. [PMID: 36850198 PMCID: PMC9959648 DOI: 10.3390/polym15040914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/15/2023] [Accepted: 02/03/2023] [Indexed: 02/17/2023] Open
Abstract
Sterilization is a fundamental step to eliminate microorganisms prior to the application of products, especially in the food and medical industries. γ-irradiation is one of the most recommended and effective methods used for sterilization, but its effect on the properties and performance of bio-based polymers is negligible. This work is aimed at evaluating the influence of γ-radiation at doses of 5, 10, 15, 25, 30, and 40 kGy on the morphology, properties, and performance of bioplastic produced from onion bulb (Allium cepa L.), using two hydrothermal synthesis procedures. These procedures differ in whether the product is washed or not after bioplastic synthesis, and are referred to as the unwashed hydrothermally treated pulp (HTP) and washed hydrothermally treated pulp (W-HTP). The morphological analysis indicated that the film surfaces became progressively rougher and more irregular for doses above 25 kGy, which increases their hydrophobicity, especially for the W-HTP samples. In addition, the FTIR and XRD results indicated that irradiation changed the structural and chemical groups of the samples. There was an increase in the crystallinity index and a predominance of the interaction of radiation with the hydroxyl groups-more susceptible to the oxidative effect-besides the cleavage of chemical bonds depending on the γ-radiation dose. The presence of soluble carbohydrates influenced the mechanical behavior of the samples, in which HTP is more ductile than W-HTP, but γ-radiation did not cause a change in mechanical properties proportionally to the dose. For W-HTP, films there was no mutagenicity or cytotoxicity-even after γ-irradiation at higher doses. In conclusion, the properties of onion-based films varied significantly with the γ-radiation dose. The films were also affected differently by radiation, depending on their chemical composition and the change induced by washing, which influences their use in food packaging or biomedical devices.
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Affiliation(s)
- Marco Antonio da Costa Borges
- Laboratory of Biopolymers and Biomaterials (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, São Paulo 14801-340, Brazil
| | - Amanda Rinaldi Sorigotti
- Graduate Program in Materials Science and Engineering (PPGCEM), Federal University of São Carlos (UFSCAR), São Carlos, São Paulo 13565-905, Brazil
| | - Rafaella Takehara Paschoalin
- Laboratory of Biopolymers and Biomaterials (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, São Paulo 14801-340, Brazil
| | - José Alberto Paris Júnior
- Laboratory of Biopolymers and Biomaterials (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, São Paulo 14801-340, Brazil
| | - Lucas Henrique Domingos da Silva
- Laboratory of Biopolymers and Biomaterials (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, São Paulo 14801-340, Brazil
| | | | - Clóvis Augusto Ribeiro
- Chemistry Institute (IQ), São Paulo State University (UNESP), Araraquara, São Paulo 14800-060, Brazil
| | - Elmo Silvano de Araújo
- Department of Nuclear Energy (DEN), Federal University of Pernambuco (UFPE), Recife, Pernambuco 50670-901, Brazil
| | - Flávia Aparecida Resende
- Laboratory of Biopolymers and Biomaterials (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, São Paulo 14801-340, Brazil
| | - Hernane da Silva Barud
- Laboratory of Biopolymers and Biomaterials (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, São Paulo 14801-340, Brazil
- Correspondence:
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