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Li J, Xie Y, Liu G, Bahatibieke A, Zhao J, Kang J, Sha J, Zhao F, Zheng Y. Bioelectret Materials and Their Bioelectric Effects for Tissue Repair: A Review. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38852-38879. [PMID: 39041365 DOI: 10.1021/acsami.4c07808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Biophysical and clinical medical studies have confirmed that biological tissue lesions and trauma are related to the damage of an intrinsic electret (i.e., endogenous electric field), such as wound healing, embryonic development, the occurrence of various diseases, immune regulation, tissue regeneration, and cancer metastasis. As exogenous electrical signals, such as conductivity, piezoelectricity, ferroelectricity, and pyroelectricity, bioelectroactives can regulate the endogenous electric field, thus controlling the function of cells and promoting the repair and regeneration of tissues. Materials, once polarized, can harness their inherent polarized static electric fields to generate an electric field through direct stimulation or indirect interactions facilitated by physical signals, such as friction, ultrasound, or mechanical stimulation. The interaction with the biological microenvironment allows for the regulation and compensation of polarized electric signals in damaged tissue microenvironments, leading to tissue regeneration and repair. The technique shows great promise for applications in the field of tissue regeneration. In this paper, the generation and change of the endogenous electric field and the regulation of exogenous electroactive substances are expounded, and the latest research progress of the electret and its biological effects in the field of tissue repair include bone repair, nerve repair, drug penetration promotion, wound healing, etc. Finally, the opportunities and challenges of electret materials in tissue repair were summarized. Exploring the research and development of new polarized materials and the mechanism of regulating endogenous electric field changes may provide new insights and innovative methods for tissue repair and disease treatment in biological applications.
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Affiliation(s)
- Junfei Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yajie Xie
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Guodong Liu
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Abudureheman Bahatibieke
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jianming Zhao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jia Kang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Jian Sha
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Feilong Zhao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yudong Zheng
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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2
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Kim K, Su Y, Kucine AJ, Cheng K, Zhu D. Guided Bone Regeneration Using Barrier Membrane in Dental Applications. ACS Biomater Sci Eng 2023; 9:5457-5478. [PMID: 37650638 DOI: 10.1021/acsbiomaterials.3c00690] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Guided bone regeneration (GBR) is a widely used technique in preclinical and clinical studies due to its predictability. Its main purpose is to prevent the migration of soft tissue into the osseous wound space, while allowing osseous cells to migrate to the site. GBR is classified into two main categories: resorbable and non-resorbable membranes. Resorbable membranes do not require a second surgery but tend to have a short resorption period. Conversely, non-resorbable membranes maintain their mechanical strength and prevent collapse. However, they require removal and are susceptible to membrane exposure. GBR is often used with bone substitute graft materials to fill the defect space and protect the bone graft. The membrane can also undergo various modifications, such as surface modification and biological factor loading, to improve barrier functions and bone regeneration. In addition, bone regeneration is largely related to osteoimmunology, a new field that focuses on the interactions between bone and the immune system. Understanding these interactions can help in developing new treatments for bone diseases and injuries. Overall, GBR has the potential to be a powerful tool in promoting bone regeneration. Further research in this area could lead to advancements in the field of bone healing. This review will highlight resorbable and non-resorbable membranes with cellular responses during bone regeneration, provide insights into immunological response during bone remodeling, and discuss antibacterial features.
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Affiliation(s)
- Kakyung Kim
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Yingchao Su
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Allan J Kucine
- Department of Oral and Maxillofacial Surgery, Stony Brook University, Stony Brook, New York 11794, United States
| | - Ke Cheng
- Department of Biomedical Engineering, Columbia University, New York City, New York 10027, United States
| | - Donghui Zhu
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
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3
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Mizraji G, Davidzohn A, Gursoy M, Gursoy U, Shapira L, Wilensky A. Membrane barriers for guided bone regeneration: An overview of available biomaterials. Periodontol 2000 2023; 93:56-76. [PMID: 37855164 DOI: 10.1111/prd.12502] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/21/2023] [Accepted: 05/29/2023] [Indexed: 10/20/2023]
Abstract
Dental implants revolutionized the treatment options for restoring form, function, and esthetics when one or more teeth are missing. At sites of insufficient bone, guided bone regeneration (GBR) is performed either prior to or in conjunction with implant placement to achieve a three-dimensional prosthetic-driven implant position. To date, GBR is well documented, widely used, and constitutes a predictable and successful approach for lateral and vertical bone augmentation of atrophic ridges. Evidence suggests that the use of barrier membranes maintains the major biological principles of GBR. Since the material used to construct barrier membranes ultimately dictates its characteristics and its ability to maintain the biological principles of GBR, several materials have been used over time. This review, summarizes the evolution of barrier membranes, focusing on the characteristics, advantages, and disadvantages of available occlusive barrier membranes and presents results of updated meta-analyses focusing on the effects of these membranes on the overall outcome.
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Affiliation(s)
- Gabriel Mizraji
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | - Mervi Gursoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
- Oral Health Care, Welfare Division, City of Turku, Turku, Finland
| | - Ulvi Gursoy
- Department of Periodontology, Institute of Dentistry, University of Turku, Turku, Finland
| | - Lior Shapira
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Asaf Wilensky
- Department of Periodontology, Faculty of Dental Medicine, Hadassah Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
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Fan J, Huang C, Cheng Y, Xie C, Chen H, Peng H. Silk fibroin/calcium alginate composite modifying supermacroporous molecularly imprinted membrane synthesis for high performance on recognizing bovine hemoglobin. J Appl Polym Sci 2022. [DOI: 10.1002/app.52842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jie‐Ping Fan
- Department of Chemical Engineering Nanchang University Nanchang China
| | - Cong‐Bo Huang
- Department of Chemical Engineering Nanchang University Nanchang China
| | - Yu‐Tong Cheng
- Department of Chemical Engineering Nanchang University Nanchang China
| | - Chun‐Fang Xie
- Department of Chemical Engineering Nanchang University Nanchang China
| | - Hui‐Ping Chen
- Department of Chemical Engineering Nanchang University Nanchang China
| | - Hai‐Long Peng
- Department of Chemical Engineering Nanchang University Nanchang China
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Donato L, Nasser II, Majdoub M, Drioli E. Green Chemistry and Molecularly Imprinted Membranes. MEMBRANES 2022; 12:472. [PMID: 35629798 PMCID: PMC9144692 DOI: 10.3390/membranes12050472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/22/2022] [Accepted: 04/24/2022] [Indexed: 11/16/2022]
Abstract
Technological progress has made chemistry assume a role of primary importance in our daily life. However, the worsening of the level of environmental pollution is increasingly leading to the realization of more eco-friendly chemical processes due to the advent of green chemistry. The challenge of green chemistry is to produce more and better while consuming and rejecting less. It represents a profitable approach to address environmental problems and the new demands of industrial competitiveness. The concept of green chemistry finds application in several material syntheses such as organic, inorganic, and coordination materials and nanomaterials. One of the different goals pursued in the field of materials science is the application of GC for producing sustainable green polymers and membranes. In this context, extremely relevant is the application of green chemistry in the production of imprinted materials by means of its combination with molecular imprinting technology. Referring to this issue, in the present review, the application of the concept of green chemistry in the production of polymeric materials is discussed. In addition, the principles of green molecular imprinting as well as their application in developing greenificated, imprinted polymers and membranes are presented. In particular, green actions (e.g., the use of harmless chemicals, natural polymers, ultrasound-assisted synthesis and extraction, supercritical CO2, etc.) characterizing the imprinting and the post-imprinting process for producing green molecularly imprinted membranes are highlighted.
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Affiliation(s)
- Laura Donato
- Institute on Membrane Technology, CNR-ITM, University of Calabria, Via P. Bucci, 17/C, 87030 Rende, CS, Italy;
| | - Imen Iben Nasser
- Faculté des Sciences de Monastir, Université de Monastir, Bd. de l’Environnement, Monastir 5019, Tunisia; (I.I.N.); (M.M.)
| | - Mustapha Majdoub
- Faculté des Sciences de Monastir, Université de Monastir, Bd. de l’Environnement, Monastir 5019, Tunisia; (I.I.N.); (M.M.)
| | - Enrico Drioli
- Institute on Membrane Technology, CNR-ITM, University of Calabria, Via P. Bucci, 17/C, 87030 Rende, CS, Italy;
- Department of Engineering and of the Environment, University of Calabria, 87030 Rende, CS, Italy
- College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, China
- Centre of Excellence in Desalination Technology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Schäfer S, Smeets R, Köpf M, Drinic A, Kopp A, Kröger N, Hartjen P, Assaf AT, Aavani F, Beikler T, Peters U, Fiedler I, Busse B, Stürmer EK, Vollkommer T, Gosau M, Fuest S. Antibacterial properties of functionalized silk fibroin and sericin membranes for wound healing applications in oral and maxillofacial surgery. BIOMATERIALS ADVANCES 2022; 135:212740. [PMID: 35929202 DOI: 10.1016/j.bioadv.2022.212740] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/13/2022] [Accepted: 02/25/2022] [Indexed: 06/15/2023]
Abstract
Oral wounds are among the most troublesome injuries which easily affect the patients' quality of life. To date, the development of functional antibacterial dressings for oral wound healing remains a challenge. In this regard, we investigated antibacterial silk protein-based membranes for the application as wound dressings in oral and maxillofacial surgery. The present study includes five variants of casted membranes, i.e., i) membranes-silver nanoparticles (CM-Ag), ii) membranes-gentamicin (CM-G), iii) membranes-control (without functionalization) (CM-C), iv) membranes-silk sericin control (CM-SSC), and v) membranes-silk fibroin/silk sericin (CM-SF/SS), and three variants of nonwovens, i.e., i) silver nanoparticles (NW-Ag), ii) gentamicin (NW-G), iii) control (without functionalization) (NW-C). The surface structure of the samples was visualized with scanning electron microscopy. In addition, antibacterial testing was accomplished using agar diffusion assay, colony forming unit (CFU) analysis, and qrt-PCR. Following antibacterial assays, biocompatibility was evaluated by cell proliferation assay (XTT), cytotoxicity assay (LDH), and live-dead assay on L929 mouse fibroblasts. Findings indicated significantly lower bacterial colony growth and DNA counts for CM-Ag with a reduction of bacterial counts by 3log levels (99.9% reduction) in CFU and qrt-PCR assay compared to untreated control membranes (CM-C and CM-SSC) and membranes functionalized with gentamicin (CM-G and NW-G) (p < 0.001). Similarly, NW-G yielded significantly lower DNA and colony growth counts compared to NW-Ag and NW-C (p < 0.001). In conclusion, CM-Ag represented 1log level better antibacterial activity compared to NW-G, whereas NW-G showed better cytocompatibility for L929 cells. As data suggest, these two membranes have the potential of application in the field of bacteria-free oral wound healing. However, provided that loading strategy and cytocompatibility are adjusted according to the antibacterial agents' characteristic and fabrication technique of the membranes.
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Affiliation(s)
- Sogand Schäfer
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany; Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | | | | | | | - Nadja Kröger
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Cologne, 50937 Cologne, Germany
| | - Philip Hartjen
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Alexandre Thomas Assaf
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Farzaneh Aavani
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Thomas Beikler
- Department of Periodontics, Preventive and Restorative Dentistry, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Ulrike Peters
- Department of Periodontics, Preventive and Restorative Dentistry, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Imke Fiedler
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Björn Busse
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Ewa K Stürmer
- Department of Vascular Medicine, University Heart Center, Translational Wound Research, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Tobias Vollkommer
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Martin Gosau
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
| | - Sandra Fuest
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20251 Hamburg, Germany.
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7
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Application of Alginate Hydrogels for Next-Generation Articular Cartilage Regeneration. Int J Mol Sci 2022; 23:ijms23031147. [PMID: 35163071 PMCID: PMC8835677 DOI: 10.3390/ijms23031147] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/28/2022] Open
Abstract
The articular cartilage has insufficient intrinsic healing abilities, and articular cartilage injuries often progress to osteoarthritis. Alginate-based scaffolds are attractive biomaterials for cartilage repair and regeneration, allowing for the delivery of cells and therapeutic drugs and gene sequences. In light of the heterogeneity of findings reporting the benefits of using alginate for cartilage regeneration, a better understanding of alginate-based systems is needed in order to improve the approaches aiming to enhance cartilage regeneration with this compound. This review provides an in-depth evaluation of the literature, focusing on the manipulation of alginate as a tool to support the processes involved in cartilage healing in order to demonstrate how such a material, used as a direct compound or combined with cell and gene therapy and with scaffold-guided gene transfer procedures, may assist cartilage regeneration in an optimal manner for future applications in patients.
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8
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Sasaki JI, Abe GL, Li A, Thongthai P, Tsuboi R, Kohno T, Imazato S. Barrier membranes for tissue regeneration in dentistry. Biomater Investig Dent 2021; 8:54-63. [PMID: 34104896 PMCID: PMC8158285 DOI: 10.1080/26415275.2021.1925556] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/29/2021] [Indexed: 12/14/2022] Open
Abstract
Background: In dentistry, barrier membranes are used for guided tissue regeneration (GTR) and guided bone regeneration (GBR). Various membranes are commercially available and extensive research and development of novel membranes have been conducted. In general, membranes are required to provide barrier function, biosafety, biocompatibility and appropriate mechanical properties. In addition, membranes are expected to be bioactive to promote tissue regeneration. Objectives: This review aims to organize the fundamental characteristics of the barrier membranes that are available and studied for dentistry, based on their components. Results: The principal components of barrier membranes are divided into nonbiodegradable and biodegradable materials. Nonbiodegradable membranes are manufactured from synthetic polymers, metals or composites of these materials. The first reported barrier membrane was made from expanded polytetrafluoroethylene (e-PTFE). Titanium has also been applied for dental regenerative therapy and shows favorable barrier function. Biodegradable membranes are mainly made from natural and synthetic polymers. Collagens are popular materials that are processed for clinical use by cross-linking. Aliphatic polyesters and their copolymers have been relatively recently introduced into GTR and GBR treatments. In addition, to improve the tissue regenerative function and mechanical strength of biodegradable membranes, inorganic materials such as calcium phosphate and bioactive glass have been incorporated at the research stage. Conclusions: Currently, there are still insufficient guidelines for barrier membrane choice in GTR and GBR, therefore dentists are required to understand the characteristics of barrier membranes.
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Affiliation(s)
- Jun-Ichi Sasaki
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Gabriela L. Abe
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Aonan Li
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Pasiree Thongthai
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Ririko Tsuboi
- Department of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Tomoki Kohno
- Department of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, Suita, Japan
| | - Satoshi Imazato
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Suita, Japan
- Department of Advanced Functional Materials Science, Osaka University Graduate School of Dentistry, Suita, Japan
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Reichstein W, Sommer L, Veziroglu S, Sayin S, Schröder S, Mishra YK, Saygili Eİ, Karayürek F, Açil Y, Wiltfang J, Gülses A, Faupel F, Aktas OC. Initiated Chemical Vapor Deposition (iCVD) Functionalized Polylactic Acid-Marine Algae Composite Patch for Bone Tissue Engineering. Polymers (Basel) 2021; 13:polym13020186. [PMID: 33430187 PMCID: PMC7825612 DOI: 10.3390/polym13020186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/03/2021] [Accepted: 01/05/2021] [Indexed: 12/19/2022] Open
Abstract
The current study aimed to describe the fabrication of a composite patch by incorporating marine algae powders (MAPs) into poly-lactic acid (PLA) for bone tissue engineering. The prepared composite patch was functionalized with the co-polymer, poly (2-hydroxyethyl methacrylate-co-ethylene glycol dimethacrylate) (p(HEMA-co-EGDMA)) via initiated chemical vapor deposition (iCVD) to improve its wettability and overall biocompatibility. The iCVD functionalized MAP–PLA composite patch showed superior cell interaction of human osteoblasts. Following the surface functionalization by p(HEMA-co-EGDMA) via the iCVD technique, a highly hydrophilic patch was achieved without tailoring any morphological and structural properties. Moreover, the iCVD modified composite patch exhibited ideal cell adhesion for human osteoblasts, thus making the proposed patch suitable for potential biomedical applications including bone tissue engineering, especially in the fields of dentistry and orthopedy.
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Affiliation(s)
- Wiebke Reichstein
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany; (W.R.); (S.V.); (S.S.); (F.F.)
| | - Levke Sommer
- Department of Oral and Maxillofacial Surgery, Campus Kiel, University Hospital of Schleswig-Holstein, Arnold-Heller-Straße 3, 24105 Kiel, Germany; (L.S.); (Y.A.); (J.W.)
| | - Salih Veziroglu
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany; (W.R.); (S.V.); (S.S.); (F.F.)
| | - Selin Sayin
- Marine Science and Technology Faculty, Iskenderun Technical University, 31200 Iskenderun/Hatay, Turkey;
| | - Stefan Schröder
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany; (W.R.); (S.V.); (S.S.); (F.F.)
| | - Yogendra Kumar Mishra
- Mads Clausen Institute, NanoSYD, University of Southern Denmark, Alsion 2, 6400 Sønderborg, Denmark;
| | - Eyüp İlker Saygili
- Department of Medical Biochemistry, SANKO University, Şehitkamil, 27090 Gaziantep, Turkey;
| | - Fatih Karayürek
- Department of Periodontology, Cankiri Karatekin University, 18100 Cankiri, Turkey;
| | - Yahya Açil
- Department of Oral and Maxillofacial Surgery, Campus Kiel, University Hospital of Schleswig-Holstein, Arnold-Heller-Straße 3, 24105 Kiel, Germany; (L.S.); (Y.A.); (J.W.)
| | - Jörg Wiltfang
- Department of Oral and Maxillofacial Surgery, Campus Kiel, University Hospital of Schleswig-Holstein, Arnold-Heller-Straße 3, 24105 Kiel, Germany; (L.S.); (Y.A.); (J.W.)
| | - Aydin Gülses
- Department of Oral and Maxillofacial Surgery, Campus Kiel, University Hospital of Schleswig-Holstein, Arnold-Heller-Straße 3, 24105 Kiel, Germany; (L.S.); (Y.A.); (J.W.)
- Correspondence: (A.G.); (O.C.A.)
| | - Franz Faupel
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany; (W.R.); (S.V.); (S.S.); (F.F.)
| | - Oral Cenk Aktas
- Chair for Multicomponent Materials, Institute of Materials Science, Faculty of Engineering, Kiel University, Kaiserstr. 2, 24143 Kiel, Germany; (W.R.); (S.V.); (S.S.); (F.F.)
- Correspondence: (A.G.); (O.C.A.)
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10
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Han X, Huo P, Ding Z, Kumar P, Liu B. Preparation of Lutein-Loaded PVA/Sodium Alginate Nanofibers and Investigation of Its Release Behavior. Pharmaceutics 2019; 11:E449. [PMID: 31480706 PMCID: PMC6781311 DOI: 10.3390/pharmaceutics11090449] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 08/23/2019] [Accepted: 08/28/2019] [Indexed: 11/25/2022] Open
Abstract
This investigation aims to study the characteristics and release properties of lutein-loaded polyvinyl alcohol/sodium alginate (PVA/SA) nanofibers prepared by electrospinning. In order to increase PVA/SA nanofibers' water-resistant ability for potential biomedical applications, the electrospun PVA/SA nanofibers were cross-linked with a mixture of glutaraldehyde and saturated boric acid solution at room temperature. The nanofibers were characterized using scanning electron microscopy (SEM) and X-ray diffractometer (XRD). Disintegration time and contact angle measurements testified the hydrophilicity change of the nanofibers before and after cross-linking. The lutein release from the nanofibers after cross-linking was measured by an ultraviolet absorption spectrophotometer, which showed sustained release up to 48 h and followed anomalous (non-Fickian) release mechanism as indicated by diffusion exponent value obtained from the Korsmeyer-Peppas equation. The results indicated that the prepared lutein-loaded PVA/SA nanofibers have great potential as a controlled release system.
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Affiliation(s)
- Xinxu Han
- School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China
| | - Peipei Huo
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China.
| | - Zhongfeng Ding
- College of Life Sciences, Shandong University of Technology, Zibo 255000, China
| | - Parveen Kumar
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China
| | - Bo Liu
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Xincun West Road 266, Zibo 255000, China.
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11
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Geão C, Costa-Pinto AR, Cunha-Reis C, Ribeiro VP, Vieira S, Oliveira JM, Reis RL, Oliveira AL. Thermal annealed silk fibroin membranes for periodontal guided tissue regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:27. [PMID: 30747338 DOI: 10.1007/s10856-019-6225-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
Guided tissue regeneration (GTR) is a surgical procedure applied in the reconstruction of periodontal defects, where an occlusive membrane is used to prevent the fast-growing connective tissue from migrating into the defect. In this work, silk fibroin (SF) membranes were developed for periodontal guided tissue regeneration. Solutions of SF with glycerol (GLY) or polyvinyl alcohol (PVA) where prepared at several weight ratios up to 30%, followed by solvent casting and thermal annealing at 85 °C for periods of 6 and 12 h to produce high flexible and stable membranes. These were characterized in terms of their morphology, physical integrity, chemical structure, mechanical and thermal properties, swelling capability and in vitro degradation behavior. The developed blended membranes exhibited high ductility, which is particular relevant considering the need for physical handling and adaptability to the defect. Moreover, the membranes were cultured with human periodontal ligament fibroblast cells (hPDLs) up to 7 days. Also, the higher hydrophilicity and consequent in vitro proteolytic degradability of these blends was superior to pure silk fibroin membranes. In particular SF/GLY blends demonstrated to support high cell adhesion and viability with an adequate hPDLs' morphology, make them excellent candidates for applications in periodontal regeneration.
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Affiliation(s)
- Catarina Geão
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Arquiteto Lobão Vital, 4200-072, Porto, Portugal
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradable and Biomimetics, Headquarters of the European Institute of Excellence on tissue Engineering and Regenerative Medicine, AvePark, 4805-17, Barco, Guimarães, Portugal
| | - Ana R Costa-Pinto
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Arquiteto Lobão Vital, 4200-072, Porto, Portugal
| | - Cassilda Cunha-Reis
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Arquiteto Lobão Vital, 4200-072, Porto, Portugal
| | - Viviana P Ribeiro
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradable and Biomimetics, Headquarters of the European Institute of Excellence on tissue Engineering and Regenerative Medicine, AvePark, 4805-17, Barco, Guimarães, Portugal
- ICVS/3B's-PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Sílvia Vieira
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradable and Biomimetics, Headquarters of the European Institute of Excellence on tissue Engineering and Regenerative Medicine, AvePark, 4805-17, Barco, Guimarães, Portugal
- ICVS/3B's-PT Government Associated Laboratory, Braga/Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradable and Biomimetics, Headquarters of the European Institute of Excellence on tissue Engineering and Regenerative Medicine, AvePark, 4805-17, Barco, Guimarães, Portugal
- ICVS/3B's-PT Government Associated Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, 4805-017, Barco, Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs-Research Institute on Biomaterials, Biodegradable and Biomimetics, Headquarters of the European Institute of Excellence on tissue Engineering and Regenerative Medicine, AvePark, 4805-17, Barco, Guimarães, Portugal
- ICVS/3B's-PT Government Associated Laboratory, Braga/Guimarães, Portugal
- The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, AvePark, 4805-017, Barco, Guimarães, Portugal
| | - Ana L Oliveira
- CBQF-Centro de Biotecnologia e Química Fina, Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Arquiteto Lobão Vital, 4200-072, Porto, Portugal.
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Galiano F, Briceño K, Marino T, Molino A, Christensen KV, Figoli A. Advances in biopolymer-based membrane preparation and applications. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.07.059] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Pettian MS, Plepis AMDG, Martins VDCA, dos Santos GR, Pinto CAL, Galdeano EA, Calegari ARA, de Moraes CA, da Cunha MR. Use of an anionic collagen matrix made from bovine intestinal serosa for in vivo repair of cranial defects. PLoS One 2018; 13:e0197806. [PMID: 30001321 PMCID: PMC6042682 DOI: 10.1371/journal.pone.0197806] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 05/09/2018] [Indexed: 12/15/2022] Open
Abstract
Polymeric biomaterials composed of extracellular matrix components possess osteoconductive capacity that is essential for bone healing. The presence of collagen and the ability to undergo physicochemical modifications render these materials a suitable alternative in bone regenerative therapies. The objective of this study was to evaluate the osteogenic capacity of collagen-based matrices (native and anionic after alkaline hydrolysis) made from bovine intestinal serosa (MBIS). Twenty-five animals underwent surgery to create a cranial defect to be filled with native and anionic collagen matrixes, mmineralized and non mineralized. The animals were killed painlessly 6 weeks after surgery and samples of the wound area were submitted to routine histology and morphometric analysis. In the surgical area there was new bone formation projecting from the margins to the center of the defect. More marked bone neoformation occurred in the anionic matrices groups in such a way that permitted union of the opposite margins of the bone defect. The newly formed bone matrix exhibited good optical density of type I collagen fibers. Immunoexpression of osteocalcin by osteocytes was observed in the newly formed bone. Morphometric analysis showed a greater bone volume in the groups receiving the anionic matrices compared to the native membranes. Mineralization of the biomaterial did not increase its osteoregenerative capacity. In conclusion, the anionic matrix exhibits osteoregenerative capacity and is suitable for bone reconstruction therapies.
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Affiliation(s)
- Mariane Silva Pettian
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | - Ana Maria de Guzzi Plepis
- Interunit Postgraduate Program in Bioengineering, University of São Paulo, USP, São Carlos-SP, Brazil
- Institute of Chemistry of São Carlos, University of São Paulo, USP, São Carlos-SP, Brazil
| | | | - Geovane Ribeiro dos Santos
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | - Clovis Antônio Lopes Pinto
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
- Department of Anatomical Pathology, A.C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - Ewerton Alexandre Galdeano
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | | | - Carlos Alberto de Moraes
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | - Marcelo Rodrigues da Cunha
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
- Interunit Postgraduate Program in Bioengineering, University of São Paulo, USP, São Carlos-SP, Brazil
- * E-mail:
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Abstract
This review is focused on the use of membranes for the specific application of bone regeneration. The first section focuses on the relevance of membranes in this context and what are the specifications that they should possess to improve the regeneration of bone. Afterward, several techniques to engineer bone membranes by using "bulk"-like methods are discussed, where different parameters to induce bone formation are disclosed in a way to have desirable structural and functional properties. Subsequently, the production of nanostructured membranes using a bottom-up approach is discussed by highlighting the main advances in the field of bone regeneration. Primordial importance is given to the promotion of osteoconductive and osteoinductive capability during the membrane design. Whenever possible, the films prepared using different techniques are compared in terms of handability, bone guiding ability, osteoinductivity, adequate mechanical properties, or biodegradability. A last chapter contemplates membranes only composed by cells, disclosing their potential to regenerate bone.
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Affiliation(s)
- Sofia G Caridade
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
| | - João F Mano
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
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15
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Elgali I, Omar O, Dahlin C, Thomsen P. Guided bone regeneration: materials and biological mechanisms revisited. Eur J Oral Sci 2017; 125:315-337. [PMID: 28833567 PMCID: PMC5601292 DOI: 10.1111/eos.12364] [Citation(s) in RCA: 418] [Impact Index Per Article: 59.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Guided bone regeneration (GBR) is commonly used in combination with the installment of titanium implants. The application of a membrane to exclude non‐osteogenic tissues from interfering with bone regeneration is a key principle of GBR. Membrane materials possess a number of properties which are amenable to modification. A large number of membranes have been introduced for experimental and clinical verification. This prompts the need for an update on membrane properties and the biological outcomes, as well as a critical assessment of the biological mechanisms governing bone regeneration in defects covered by membranes. The relevant literature for this narrative review was assessed after a MEDLINE/PubMed database search. Experimental data suggest that different modifications of the physicochemical and mechanical properties of membranes may promote bone regeneration. Nevertheless, the precise role of membrane porosities for the barrier function of GBR membranes still awaits elucidation. Novel experimental findings also suggest an active role of the membrane compartment per se in promoting the regenerative processes in the underlying defect during GBR, instead of being purely a passive barrier. The optimization of membrane materials by systematically addressing both the barrier and the bioactive properties is an important strategy in this field of research.
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Affiliation(s)
- Ibrahim Elgali
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden
| | - Omar Omar
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden
| | - Christer Dahlin
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden.,Department of Oral Maxillofacial Surgery/ENT, NU-Hospital organisation, Trollhättan, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, University of Gothenburg, Gothenburg, Sweden
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Yang JM, Yang JH, Tsou SC, Ding CH, Hsu CC, Yang KC, Yang CC, Chen KS, Chen SW, Wang JS. Cell proliferation on PVA/sodium alginate and PVA/poly(γ-glutamic acid) electrospun fiber. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 66:170-177. [DOI: 10.1016/j.msec.2016.04.068] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 03/29/2016] [Accepted: 04/18/2016] [Indexed: 01/12/2023]
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17
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Dimitriou R, Mataliotakis GI, Calori GM, Giannoudis PV. The role of barrier membranes for guided bone regeneration and restoration of large bone defects: current experimental and clinical evidence. BMC Med 2012; 10:81. [PMID: 22834465 PMCID: PMC3423057 DOI: 10.1186/1741-7015-10-81] [Citation(s) in RCA: 227] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 07/26/2012] [Indexed: 12/27/2022] Open
Abstract
Treatment of large bone defects represents a great challenge in orthopedic and craniomaxillofacial surgery. Although there are several methods for bone reconstruction, they all have specific indications and limitations. The concept of using barrier membranes for restoration of bone defects has been developed in an effort to simplify their treatment by offering a single-staged procedure. Research on this field of bone regeneration is ongoing, with evidence being mainly attained from preclinical studies. The purpose of this review is to summarize the current experimental and clinical evidence on the use of barrier membranes for restoration of bone defects in maxillofacial and orthopedic surgery. Although there are a few promising preliminary human studies, before clinical applications can be recommended, future research should aim to establish the 'ideal' barrier membrane and delineate the need for additional bone grafting materials aiming to 'mimic' or even accelerate the normal process of bone formation. Reproducible results and long-term observations with barrier membranes in animal studies, and particularly in large animal models, are required as well as well-designed clinical studies to evaluate their safety, efficacy and cost-effectiveness.
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Affiliation(s)
- Rozalia Dimitriou
- Department of Trauma and Orthopaedics, Leeds Teaching Hospitals NHS Trust, Leeds LS1 3EX, UK
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18
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Nasoori A, Mohitmafi S, Khoshzaban A, Tavakoli SAH, Shahabi Z. Biochemical and biomechanical evaluation of human pericardial membrane and demineralized bone matrix in rabbit calvarial defects. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s00580-011-1394-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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19
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Design of a controlled release system of OP-1 and TGF-β1 based in microparticles of sodium alginate and release characterization by HPLC-UV. In Vitro Cell Dev Biol Anim 2011; 47:681-8. [DOI: 10.1007/s11626-011-9459-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2011] [Accepted: 09/19/2011] [Indexed: 12/22/2022]
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Zhao L, Zhao J, Wang S, Wang J, Liu J. Comparative study between tissue-engineered periosteum and structural allograft in rabbit critical-sized radial defect model. J Biomed Mater Res B Appl Biomater 2011; 97:1-9. [PMID: 21290569 DOI: 10.1002/jbm.b.31768] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 07/27/2010] [Accepted: 08/05/2010] [Indexed: 01/14/2023]
Abstract
The purpose of this study was to compare the efficacy of tissue-engineered periosteum (TEP) to allgeneic bone in repairing segmental bone defect. TEP was fabricated with osteoinduced rabbit bone marrow mesenchymal stem cells (MSCs) and porcine small intestinal submucosa (SIS). Allogrfats were cryopreserved radial segments of New Zealand Rabbits. Forty-eight radial critical-sized defects (CSD) were bilaterally produced in 24 rabbits. The defects were divided into three groups, group A, TEP implantation, group B, SIS implantation, and group C allograft. Bone defect reconstruction was kinetically analyzed at 4, 8, and 12 weeks by radiographic and histological scoring system. In group A, bone defects were radiographically and histologically healed with mature cortex and marrow cavity by 12 weeks, while none of the defects healed in group B. Group C showed a slow process of creeping substitution with lymphocyte infiltration. Statistical comparison confirmed that group A had a more efficient and rapid bone defect reparation as well as remodelling than Group B and C. In conclusion, TEP is superior to structural allograft in reconstruction of allogenic segmental bone defect. Pure SIS cannot guide bone regeneration in this rabbit model.
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Affiliation(s)
- Lin Zhao
- Department of Orthopaedic Surgery, Orthopaedic Institute of the 2nd Hospital of Lanzhou University, 730030, Lanzhou City, People's Republic of China.
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21
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Zhao L, Zhao J, Wang S, Xia Y, Liu J, He J, Wang X. Evaluation of immunocompatibility of tissue-engineered periosteum. Biomed Mater 2011; 6:015005. [PMID: 21205993 DOI: 10.1088/1748-6041/6/1/015005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Tissue-engineered periosteum (TEP) and 'intramembranous ossification' may be an alternative approach to bone tissue engineering. In the previous study we attained successful bone defect reparation with homemade TEP in an allogenic rabbit model. But its allogenic immunocompatibility remained unknown. In this study TEP was constructed by seeding osteogenically induced mesenchymal stem cells of rabbit onto porcine small intestinal submucosa (SIS). A mixed lymphocyte reaction (MLR) was applied to evaluate the in vitro immunogenicity. The ratio of CD4(+)/CD8(+) T-lymphocytes was tested kinetically to evaluate the systematic reaction of the TEP allograft, and a histological examination was performed to investigate local inflammation and ectopic osteogenesis. MLR indicated that TEP had a higher in vitro immunostimulation than SIS (p < 0.05). The ratios of CD4(+)/CD8(+) lymphocytes increased in both TEP and SIS implanted groups in 2 weeks, followed by a decrease to a normal level from 2 to 4 weeks. Histological examination revealed modest lymphocyte infiltration for no more than 2 weeks. Moreover, subcutaneous ectopic ossification was observed in TEP allograft animals (8/12). Our findings imply that TEP has a certain immune reaction for the allograft, but it is not severe enough to impact osteogenesis in the allogenic rabbit model.
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Affiliation(s)
- Lin Zhao
- Orthopaedic Institute of the 2nd Hospital of Lanzhou University, ChengGuan District, Lanzhou City, People's Republic of China.
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22
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Investigation of the material properties of alginate for the development of hydrogel repair of dura mater. J Mech Behav Biomed Mater 2010; 4:16-33. [PMID: 21094477 DOI: 10.1016/j.jmbbm.2010.08.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2010] [Revised: 08/22/2010] [Accepted: 08/27/2010] [Indexed: 11/23/2022]
Abstract
The collagenous dura mater isolates the brain from the external environment and requires a secure closure following invasive neurosurgery. This is typically accomplished by approximation of the dura mater via sutures and adhesives. In selected cases, however, large portions of dura mater require excision, necessitating a tissue replacement patch. The mild reaction conditions and long-term biocompatibility of alginate evince strong candidacy for these applications. This study investigates the potential of diffusion and internally gelled alginates for these applications. Specifically, we quantified the viscosity, gel rate, syneresis level, compressive strength, compressive modulus, complex modulus and loss angle in the context of dura mater repair. The ideal sealant would have a rapid cross-link speed, while the ideal dura mater replacement would have a low level of syneresis. Both applications require a compressive modulus of 20-100 kPa and a complex modulus of 1-24 kPa. The data collected in this study suggests that the use of 1.95 wt% 43 mPa s alginate with 200 mM CaCl(2) is sufficient for approximating the dural membrane for closure alone or in conjunction with suture. Alternatively, the use of 1.95 wt% 43 mPa s alginate with 100 mM CaCO(3) is sufficient for tissue replacement in large dural defects.
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23
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Fuji T, Anada T, Honda Y, Shiwaku Y, Koike H, Kamakura S, Sasaki K, Suzuki O. Octacalcium Phosphate–Precipitated Alginate Scaffold for Bone Regeneration. Tissue Eng Part A 2009; 15:3525-35. [DOI: 10.1089/ten.tea.2009.0048] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Takeshi Fuji
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yoshitomo Honda
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yukari Shiwaku
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Hiroko Koike
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Shinji Kamakura
- Division of Bone Regenerative Engineering, Department of Regenerative Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Keiichi Sasaki
- Division of Advanced Prosthetic Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, Sendai, Japan
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Kim EJ, Yoon SJ, Yeo GD, Pai CM, Kang IK. Preparation of biodegradable PLA/PLGA membranes with PGA mesh and their application for periodontal guided tissue regeneration. Biomed Mater 2009; 4:055001. [DOI: 10.1088/1748-6041/4/5/055001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Lee HM, Yoon YH, Lee WB, Kim JK. A gel-forming poly-L: -guluronic acid produced from no guluronate-rich marine algae using new hydrolysis method: test for endovascular embolization. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:1917-1926. [PMID: 19399590 DOI: 10.1007/s10856-009-3758-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2008] [Accepted: 04/17/2009] [Indexed: 05/27/2023]
Abstract
To prepare a gel-forming poly-L-guluronic acid (Poly-G) from no guluronate-rich Laminaria japonica, a new hydrolysis method was employed with a lower HCl concentration (0.025-0.15 M) and a shorter treatment time (5 min). The Poly-Gs were set to measure purity, presence of poly-L-guluronic block, molecular weight distribution, polymer yield, viscosity, and compressive gel strength. Finally, the Poly-G was tested to embolize the renal vascular system by using a rabbit model and angiography. Optimized Poly-G could be selected with respect to wt% concentration, polymer yield, gel-forming stability, viscosity, and gel strength as an endovascular embolizing agent. Overall, 0.4-0.6% of 0.03 M-Poly-G obtained from acid treatment with 0.03 M of HCl had molecular weights greater than 80 kDa, and the best gelling capacity with an injectable viscosity (30-120 cP). It was successfully delivered into the vascular bed of a rabbit kidney and was shown angiographically to embolize the renal vascular system.
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Affiliation(s)
- Hyun Mee Lee
- Department of Chemistry, Yeungnam University, Gyeongsan, South Korea
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26
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He H, Huang J, Shi J, Ping F, Chen G, Dong Y. Haversian Remodeling in Guided Bone Regeneration with Calcium Alginate Film in Circular Bone Defect Model of Rabbit. ACTA ACUST UNITED AC 2009; 35:533-42. [DOI: 10.1080/10731190701586285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Kuo SM, Chang SJ, Cheng-Chie Niu G, Lan CW, Cheng WT, Yang CZ. Guided tissue regeneration with use of β-TCP/chitosan composite membrane. J Appl Polym Sci 2009. [DOI: 10.1002/app.29664] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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The study of the feasibility of segmental bone defect repair with tissue- engineered bone membrane: a qualitative observation. Strategies Trauma Limb Reconstr 2008; 3:57-64. [PMID: 18427729 PMCID: PMC2553429 DOI: 10.1007/s11751-008-0034-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2007] [Accepted: 02/19/2008] [Indexed: 01/14/2023] Open
Abstract
The objective of the study was to investigate the feasibility of intramembranous osteogenesis from tissue-engineered bone membrane in vivo. Bone marrow mesenchymal stem cells (MSCs) of rabbits were harvested, expanded and some of them were induced into osteoblasts. Porcine small intestinal submucosa (SIS) was converted by a series of physical and chemical procedures into a scaffold. MSCs and induced osteoblasts were seeded separately onto the scaffold, thus fabricating two kinds of tissue-engineered bone membrane. A total of 12 New Zealand rabbits were subjected to a surgical operation; a 15 mm bone segment, including the periosteum, was resected from the radius on both sides of each rabbit to create critical bone defects. The two kinds of tissue-engineered bone membrane and SIS (as control) were implanted randomly into the site of bone defect. The animals had radiographs and were killed after 4 weeks. The specimens were harvested and histological examination performed for evidence of osteogenesis. Bone tissue had formed in defects treated by the two kinds of tissue-engineered bone membrane at 4 weeks. This was supported by the X-ray and histological examination, which confirmed the segmental gap bridged by bone. There was no attempt to bridge in the bone defect treated by SIS. Tissue-engineered bone membrane, constructed by seeding allogeneic cells on an xenogeneic and bio-derived scaffold, can repair critical bone defects successfully.
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He H, Huang J, Ping F, Sun G, Chen G. Calcium alginate film used for guided bone regeneration in mandible defects in a rabbit model. Cranio 2008; 26:65-70. [PMID: 18290527 DOI: 10.1179/crn.2008.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The objective of this research was to study a new bioabsorbable membrane material, calcium alginate film (CAF), used for guided tissue regeneration (GTR) or guided bone regeneration (GBRL). Circular bone defects of five mm diameter were created in the corners of the mandibles in 45 rabbits. The defects covered with calcium alginate film (CAF) served as the experimental sites, and collagen membrane (CM) or no membrane served as the control sites without considering left or right side, just with a mark on the ear of the same side. The healing condition was analyzed by histological studies and histometry analysis after one, two, four, six, and eight weeks. The histological evaluation showed that the bone regeneration pattern was centripetal in growth from the defect rim. The quantitative histometry analysis showed significantly more and faster newly generated bone in CAF defects than that in CM defects or in empty defects (p < 0.01) at two, four, six, and eight weeks postsurgically. Calcium alginate film was more effective for GTR and GBR than the collagen membrane.
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Affiliation(s)
- Hong He
- Second Affiliated Hospital of Medical School, Zhejiang University, China.
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31
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He H, Yan W, Chen G, Lu Z. Acceleration of de novo bone formation with a novel bioabsorbable film: a histomorphometric study in vivo. J Oral Pathol Med 2008; 37:378-82. [DOI: 10.1111/j.1600-0714.2008.00651.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Nunamaker EA, Purcell EK, Kipke DR. In vivo
stability and biocompatibility of implanted calcium alginate disks. J Biomed Mater Res A 2007; 83:1128-1137. [PMID: 17595019 DOI: 10.1002/jbm.a.31275] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Alginate is a commonly used biomedical hydrogel whose in vivo degradation behavior is only beginning to be understood. The use of alginate in the central nervous system is gaining popularity as an electrode coating, cell encapsulation matrix, and for duraplasty. However, it is necessary to understand how the hydrogel will behave in vivo to aid in the development of alginate for use as a neural interface material. The goal of the current study was to compare the rheological behavior of explanted alginate disks and the inflammatory response to subcutaneously implanted alginate hydrogels over a 3-month period. Specifically, the effects due to (1) in situ gelling, (2) diffusion gelling, and (3) use of a poly-l-lysine (PLL) coating were investigated. While all samples' complex moduli decreased 80% in the first day, in situ gelled alginate was more stable for the first week of implantation. The PLL coating offered some stability increases for diffusion gelled alginate, but the stability in both conditions remained significantly lower than that in in situ gelled alginate. There were no differences in biocompatibility that clearly suggested one gelation method over another. These results indicate that in situ gelation is the preferred method in neural interface applications where stability is the primary concern.
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Affiliation(s)
- Elizabeth A Nunamaker
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2099
| | - Erin K Purcell
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2099
| | - Daryl R Kipke
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2099
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He H, Huang J, Chen G, Dong Y. Application of a new bioresorbable film to guided bone regeneration in tibia defect model of the rabbits. J Biomed Mater Res A 2007; 82:256-62. [PMID: 17311317 DOI: 10.1002/jbm.a.31176] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Aim is to study the effect of calcium alginate film (CAF) on guided bone regeneration (GBR). Circular bone defects with 5 mm diameter were created in both tibias in 60 rabbits. The defects covered with CAF served as the experimental site, and with collagen membrane (CM) or with no membrane both served as the control site. Healing was analyzed by gross, X-ray, electromicroscopy, histology, immuno-histochemical studies, and an image pattern analysis system after 1, 2, 4, 6, and 8 weeks. The CM control sites showed more macrophages, and CM were absorbed more slowly while collecting fewer osteoinductive factors (p < 0.01) in the early weeks. CAF induced dense bone formation, whereas CM induced less new bone, and the blank control sites effected the worst. In conclusion, the effect of CAF group gave better results than blank control group and CM group on GBR in this animal model.
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Affiliation(s)
- Hong He
- Department of Stomatology, Second Affiliated Hospital, College of Medicine, Zhe Jiang University, Hang Zhou 310009, China
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34
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Ueyama Y, Koyama T, Ishikawa K, Mano T, Ogawa Y, Nagatsuka H, Suzuki K. Comparison of ready-made and self-setting alginate membranes used as a barrier membrane for guided bone regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2006; 17:281-8. [PMID: 16555121 DOI: 10.1007/s10856-006-7315-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2004] [Accepted: 05/06/2005] [Indexed: 05/08/2023]
Abstract
In order to understand the requirements of guided bone regeneration (GBR) involving alginate base self-setting barrier membranes, GBR was performed in the case of bicortical bone defects formed at the tibiae of experimental animals employing self-setting and ready-made alginate membranes. Connective tissue ingress into the bone defects at the skin side of the tibia was observed when GBR was generated utilizing ready-made alginate membrane. In contrast, bone defects were reconstructed with bone tissue when GBR was generated with self-setting alginate membrane formed from aqueous 3% sodium alginate and 3% CaCl(2) solutions. The unreacted aqueous sodium alginate solution inherent to self-setting alginate membrane did not inhibit bone tissue regeneration. Rather, callus bone was formed using sodium alginate as the nucleus. However, when GBR was effected with self-setting alginate membrane formed from aqueous 10% CaCl(2) solution, membrane was too thick and thus regeneration of bone tissue in the bone cavity was prevented. Therefore, we concluded that self-setting alginate membrane is very useful as a barrier membrane for GBR upon appropriate adjustment of conditions with respect to preparation of alginate membrane.
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Affiliation(s)
- Yoshiya Ueyama
- Department of Oral and Maxillofacial Surgery, Yamaguchi University School of Medicine, Ube, Japan.
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35
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Chen TW, Chang SJ, Niu GCC, Hsu YT, Kuo SM. Alginate-coated chitosan membrane for guided tissue regeneration. J Appl Polym Sci 2006. [DOI: 10.1002/app.24945] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Livnat M, Beyar R, Seliktar D. Endoluminal hydrogel films made of alginate and polyethylene glycol: Physical characteristics and drug-eluting properties. J Biomed Mater Res A 2005; 75:710-22. [PMID: 16100722 DOI: 10.1002/jbm.a.30474] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Drug-eluting stents signify a major achievement in reducing the incidence of coronary restenosis after percutaneous transluminal coronary angioplasty. However, where drug-eluting stents have been unsuccessful, endoluminal gel-paving strategies offer renewed optimism, mainly in a variety of vascular procedures requiring catheter-based sustained, localized delivery of therapeutic drugs, and biological factors. Despite promising results in animals, endoluminal paving has met with very limited clinical success because of the technical difficulties and stringent safety demands. The current study presents an alternative to gel paving using 40-mum-thick biodegradable polymeric films for deployment onto the artery wall during balloon angioplasty and stenting. The films are made from a durable yet compliant network of alginate and polyethylene glycol (PEG), and are securely held affixed to the vessel wall by the expanded stent struts. The alginate-based films are characterized by measuring their strength, elasticity, degree of swelling, degradability in water and saline, and drug release properties. The combination of alginate and PEG afforded the films sufficient strength and compliance for endoluminal deployment using an in vitro organ culture system. In characterizing the film degradability, it was discovered that the ionic concentration of the buffered saline was the main determinant in regulating the degradation kinetics and the release kinetics of the drug molecule Paclitaxel. These results suggest that the use of alginate-based, PEG-containing polymeric films for endoluminal coverage offers an alternative solution to conventional drug-eluting stents, with the added advantage of uniform endoluminal coverage of the treated segment and homogeneous endoluminal application of the active substance.
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Affiliation(s)
- Maya Livnat
- The Faculty of Biomedical Engineering, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
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Nasser NJ, Friedman A, Friedman M, Moor E, Mosheiff R. Guided bone regeneration in the treatment of segmental diaphyseal defects: a comparison between resorbable and non-resorbable membranes. Injury 2005; 36:1460-6. [PMID: 16243336 DOI: 10.1016/j.injury.2005.05.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2004] [Revised: 03/03/2005] [Accepted: 05/11/2005] [Indexed: 02/02/2023]
Abstract
This study compares non-absorbable, ethyl cellulose (EC) membranes and absorbable, chitosan (CH) membranes in a rabbit model. Bone regeneration, evaluated by radiological and pathological parameters, was seen in both groups. In the EC group the process was faster but was followed by a sharp decrease, whereas in the CH group it was slower and continuous.
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Affiliation(s)
- Nicola Joseph Nasser
- Department of Orthopaedic Surgery, The Hadassah-Hebrew University Medical School, Kiryat Hadassah, P.O. Box 12000, Jerusalem il-91120, Israel
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Tampieri A, Sandri M, Landi E, Celotti G, Roveri N, Mattioli-Belmonte M, Virgili L, Gabbanelli F, Biagini G. HA/alginate hybrid composites prepared through bio-inspired nucleation. Acta Biomater 2005; 1:343-51. [PMID: 16701812 DOI: 10.1016/j.actbio.2005.01.001] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2004] [Revised: 01/21/2005] [Accepted: 01/26/2005] [Indexed: 11/25/2022]
Abstract
Poorly crystalline apatite has been directly nucleated on self-assembling alginate chains by neutralization synthesis to obtain a biomimetic artificial bone-like composite. It has been observed that in preparing HA/alginate composites, Ca2+ ions present on the apatitic surface cross-link the alginate chains to produce a material with different morphology and thermal stability, both functions of the HA/alginate weight ratio. In vitro tests were performed on different samples in terms of both the HA/alginate ratio and synthesis temperature. All the samples were cultured for seven days with MG63 osteoblast-like cells and then underwent morphological and biochemical analyses (MTT and ALP tests). Scaffolds showed a different solubility into the culture media, which was related to the temperature of synthesis and to the HA/alginate ratio. All our data confirm the ability of the tested materials to favour cell growth and to maintain their osteoblastic functionality, at least during the examined period.
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Affiliation(s)
- A Tampieri
- Institute of Science and Technology for Ceramics ISTEC-CNR, via Granarolo 64, I-48018 Faenza (RA), Italy.
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Kuo SM, Chang SJ, Chen TW, Kuan TC. Guided tissue regeneration for using a chitosan membrane: An experimental study in rats. J Biomed Mater Res A 2005; 76:408-15. [PMID: 16270348 DOI: 10.1002/jbm.a.30534] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Barrier membranes are employed clinically to deflect the growth of gingival tissues away from root surface. They provide an isolated space over the regions with the defective tissues that allow the relatively slow growing periodontal ligament fibroblasts to be repopulated onto the root surface. Several makes of bioabsorbable membranes are now commercially available. In this study, we have employed chitosan as barrier membrane material and evaluated it for a guided tissue regeneration application. Three types of chitosan membranes: Chi-NaOH, Chi-Na(5)P(3)O(10), and Chi-Na(2)SO(3)(each was gelated by NaOH, crosslinked by Na(5)P(3)O(10) and Na(2)SO(3), respectively), were prepared to be evaluated by the following categories: the mechanical strength to create an effective space, the rapid rate to reach hydrolytic equilibrium in phosphate-buffered solution, and the ease of clinical manipulative operations. Consequently, standardized, transosseous and critical sized skull defects were made in adult rats and the defective regions were covered with the specifically prepared chitosan membranes. After 4 weeks of recovering, varying degrees of bone healing were observed beneath the chitosan membranes in comparison to the control group. The chitosan covered regions showed a clear boundary space between connective tissues and bony tissues. Apparently, this process resulted in a good cell occlusion and beneficial osteogenesis effect to the bone. As for the control group, the bone defect was filled with connective tissue, and a destruction of the integrity of newly formed bone was observed. Among the chitosan membranes tested in this study, Chi-NaOH membrane provided a higher percentage of new bone formation than those from the Chi-Na(5)P(3)O(10) and Chi-Na(2)SO(3) families.
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Affiliation(s)
- Shyh Ming Kuo
- Department of Biomedical Engineering, I-SHOU University, Kaohsiung, Taiwan.
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Lawson MA, Barralet JE, Wang L, Shelton RM, Triffitt JT. Adhesion and Growth of Bone Marrow Stromal Cells on Modified Alginate Hydrogels. ACTA ACUST UNITED AC 2004; 10:1480-91. [PMID: 15588407 DOI: 10.1089/ten.2004.10.1480] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Alginate is a biodegradable, immunocompatible biopolymer that is capable of immobilizing viable cells and bioactive factors. Few investigations have analyzed the efficacy of alginate gels as substrata for cell attachment and proliferation. Here we have compared the adhesion and subsequent growth of human and rat bone marrow stromal fibroblastic cells on unmodified alginate hydrogel surfaces. It was found that, in contrast to rat cells, human cells did not readily attach or proliferate on unmodified alginates. In attempts to enhance these features, or collagen type I was incorporated into the gels, with no significant improvements in prolonged human cell adherence. However, alginate gels containing both collagen type I and beta-tricalcium phosphate were found to enhance human cell adherence and proliferation. Furthermore, interactions between the collagen and beta-tricalcium phosphate prevented loss of the protein from the hydrogels. These results indicate that alginate gels containing collagen have potential uses as vehicles for delivery of adherent cells to a tissue site. In addition, gels containing beta-tricalcium phosphate, with or without collagen type I incorporation, have potential to support cell growth and differentiation in vitro before implantation. This study emphasizes the limitations of the uses of cells derived from experimental animals in certain model studies relating to human tissue engineering.
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Affiliation(s)
- M A Lawson
- Nuffield Department of Orthopaedic Surgery, University of Oxford, Oxford, UK
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Temenoff JS, Steinbis ES, Mikos AG. Effect of drying history on swelling properties and cell attachment to oligo(poly(ethylene glycol) fumarate) hydrogels for guided tissue regeneration applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2004; 14:989-1004. [PMID: 14661875 DOI: 10.1163/156856203322381465] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In these experiments, the effects of the drying history of hydrogels made from a novel polymer, oligo(poly(ethylene glycol) fumarate) (OPF) with two different poly(ethylene glycol) (PEG) molecular weights (approximately 920 (1K) and 9110 (10K) g/mol), were investigated. The hydrogels were either formed, dried and then swelled, representing what may occur in the case of a pre-formed membrane for guided tissue regeneration, or were formed and swelled immediately, as may occur with an injectable material for such applications. Subsequently, swelling properties, sol fraction and polymer network structure (as indicated by differential scanning calorimetry), as well as attachment of human dermal fibroblasts to these hydrogels at 4 and 24 h was examined. It was found that drying before swelling caused a significant reduction in final fold swelling of OPF hydrogels, regardless of OPF formulation or method of drying (air-dried or vacuum-dried) (e.g. PEG 10K swollen first: 13.94 +/- 0.35 vs. vacuum first: 6.53 +/- 0.12; PEG 1K swollen first: 8.99 +/- 0.47 vs. vacuum first: 2.26 +/- 0.08). This decreased swelling correlated to significantly higher cell attachment (% seeded) to these hydrogels at 24 h (PEG 10K vacuum first: 21.1 +/- 4.7% vs. swollen first: 7.1 +/- 5.5%; PEG 1K vacuum first: 58.2 +/- 2% vs. swollen first: 7.4 +/- 2.2%). LIVE/DEAD staining followed by microscopic analysis revealed attached cells were viable, yet rounded, and that, in the case of the PEG 1K dried-first samples, undulations in the surface visible in the hydrated state may have affected cell adhesion. Regardless of treatment, all hydrogels showed significantly less cell attachment than the tissue culture polystyrene control after 24 h (104.9 +/- 4.4%). These results suggest that, by altering the PEG molecular weight used in synthesis, OPF hydrogels may be tailored to produce desired swelling properties and reduce non-specific cell adhesion for either injectable or pre-formed applications, thus providing a potential alternative material for use in guided tissue regeneration procedures.
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Affiliation(s)
- Johnna S Temenoff
- Department of Bioengineering, Rice University, 6100 Main, MS 142, PO Box 1892, Houston, TX 77005-1892, USA
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Wang L, Shelton RM, Cooper PR, Lawson M, Triffitt JT, Barralet JE. Evaluation of sodium alginate for bone marrow cell tissue engineering. Biomaterials 2003; 24:3475-81. [PMID: 12809776 DOI: 10.1016/s0142-9612(03)00167-4] [Citation(s) in RCA: 214] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Sodium alginate has applications as a material for the encapsulation and immobilisation of a variety of cell types for immunoisolatory and biochemical processing applications. It forms a biodegradable gel when crosslinked with calcium ions and it has been exploited in cartilage tissue engineering since chondrocytes do not dedifferentiate when immobilised in it. Despite its attractive properties of degradability, ease of processing and cell immobilisation, there is little work demonstrating the efficacy of alginate gel as a substrate for cell proliferation, except when RGD is modified. In this study we investigated the ability of rat bone marrow cells to proliferate and differentiate on alginates of differing composition and purity. The mechanical properties of the gels were investigated. It was found that high purity and high G-type alginate retained 27% of its initial strength after 12 days in culture and that comparable levels of proliferation were observed on this material and tissue culture plastic. Depending on composition, calcium crosslinked alginate can act as a substrate for rat marrow cell proliferation and has potential for use as 3D degradable scaffold.
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Affiliation(s)
- L Wang
- Biomaterials Unit, School of Dentistry, University of Birmingham, St Chad's Queensway, Birmingham B4 6NN, UK
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43
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Ueyama Y, Ishikawa K, Mano T, Koyama T, Nagatsuka H, Suzuki K, Ryoke K. Usefulness as guided bone regeneration membrane of the alginate membrane. Biomaterials 2002; 23:2027-33. [PMID: 11996044 DOI: 10.1016/s0142-9612(01)00332-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Alginate membrane is a new bioabsorbable, guided bone regeneration (GBR) membrane, which is placed directly on the surface of the bone defect. It is designed to drop a calcium chloride aqueous solution into the bone defect, which is filled with sodium alginate aqueous solution. Alginate membrane is an excellent agent for this procedure due to its close assimilation to the surface of the bone. In this study, we evaluated the short-term biocompatibility of alginate membrane in the bone defects of rat tibiae. GBR membrane availability was also examined. Consequently, we found that the healing process in bone defects covered with an alginate membrane was delayed in comparison with that of controls, however, the defect was restored to nearly original condition. In contrast, in the controls, bone defect repairs exhibited partitioning as a result of connective tissue involvement. Furthermore, we observed a relation between the sodium alginate concentration and the rate of absorption of the sodium alginate membrane. Absorption of a 1.5% sodium alginate membrane was slow. As a result, the compound was not absorbed completely and bone repairs resembled an hourglass. Moreover, the inflammatory response was absent surrounding the alginate membrane. The present findings suggested that the alginate membrane functions effectively as a GBR membrane. In addition, the alginate membrane derived from 3% calcium chloride and 1% sodium alginate was most suitable as a GBR membrane.
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Affiliation(s)
- Yoshiya Ueyama
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Tottori University, Yonago, Japan.
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Milella E, Barra G, Ramires PA, Leo G, Aversa P, Romito A. Poly(L-lactide)acid/alginate composite membranes for guided tissue regeneration. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 2001; 57:248-57. [PMID: 11484188 DOI: 10.1002/1097-4636(200111)57:2<248::aid-jbm1165>3.0.co;2-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The barrier membranes for guided tissue regeneration (GTR) to treat bone defects have to satisfy the criteria of biocompatibility, cell-occlusiveness, space-making, tissue integration and clinical manageability. In this study a system constituted of a poly(L-lactide) acid (PLLA) asymmetric membrane combined with an alginate film was prepared. The PLLA membrane functions to both support the alginate film and separate the soft tissue; the alginate film is intended to act as potential vehicle for the growth factors to promote osteogenesis. The structural, morphological, and mechanical properties of the bilamellar membrane and its stability in culture medium were evaluated. Moreover, the feasibility of using the alginate membranes as controlled-release delivery vehicles of TGF-beta was monitored. Finally, the bacterial adhesion and permeability of Streptococcus mutans, selected for the high adhesive affinity, were monitored. The results showed that the surfaces of the alginate side, to be used in contact with the bone defect, were rougher than PLLA ones. When in contact with complete culture medium, the PLLA-alginate membrane retained its mechanical and structural properties for more than 100 days. Then, the degradation processes occurred but the membrane continued to be stable and manageable for 6 months. Growth factors such as TGF-beta can be incorporated into alginate membranes functioning as drug delivery vehicle, and retain the biological activity when tested in an in vitro model system. The obtained membrane acted as a barrier to the passage of S. mutans bacteria and showed to promote a lower bacterial adhesion with respect to commercial GTR membranes.
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Affiliation(s)
- E Milella
- PASTIS-CNRSM S.C.p.A., Biomaterials Unit, SS 7 Appia km 7+300, 72100 Brindisi, Italy
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