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Wang W, Chu F, Zhang W, Xiao T, Teng J, Wang Y, He B, Ge B, Gao J, Ge H. Silver Mineralized Protein Hydrogel with Intrinsic Cell Proliferation Promotion and Broad-Spectrum Antimicrobial Properties for Accelerated Infected Wound Healing. Adv Healthc Mater 2024; 13:e2400047. [PMID: 38364079 DOI: 10.1002/adhm.202400047] [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: 01/08/2024] [Revised: 02/13/2024] [Indexed: 02/18/2024]
Abstract
The presence of multidrug-resistant bacteria has challenged the clinical treatment of bacterial infection. There is a real need for the development of novel biocompatible materials with broad-spectrum antimicrobial activities. Antimicrobial hydrogels show great potential in infected wound healing but are still being challenged. Herein, broad-spectrum antibacterial and mechanically tunable amyloid-based hydrogels based on self-assembly and local mineralization of silver nanoparticles are reported. The mineralized hydrogels are biocompatible and have the advantages of sustained release of silver, prolonged antimicrobial effect, and improved adhesion capacity. Moreover, the mineralized hydrogels display a significant antimicrobial effect against both Gram-positive and Gram-negative bacteria in cells and mice by inducing membrane damage and reactive oxygen species toxicity in bacteria. In addition, the mineralized hydrogels can rapidly accelerate wound healing by the synergy between their antibacterial activity and intrinsic improvement for cell proliferation and migration. This study provides a modular approach to developing a multifunctional protein hydrogel platform based on biomolecule-coordinated self-assembly for a wide range of biomedical applications.
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Affiliation(s)
- Weiqiang Wang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Fengjiao Chu
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Weifeng Zhang
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Tingting Xiao
- Department of Physical and Chemical Analysis, Anhui Provincial Center for Disease Control and Prevention, Hefei, 230601, P. R. China
| | - Jingjing Teng
- Department of Physical and Chemical Analysis, Anhui Provincial Center for Disease Control and Prevention, Hefei, 230601, P. R. China
| | - Yan Wang
- Department of Physical and Chemical Analysis, Anhui Provincial Center for Disease Control and Prevention, Hefei, 230601, P. R. China
| | - Bo He
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Binghui Ge
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Jiajia Gao
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Honghua Ge
- Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, Hefei, 230601, P. R. China
- Institute of Health Sciences and Technology, Institutes of Material Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
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El-Husseiny HM, Mady EA, El-Dakroury WA, Doghish AS, Tanaka R. Stimuli-responsive hydrogels: smart state of-the-art platforms for cardiac tissue engineering. Front Bioeng Biotechnol 2023; 11:1174075. [PMID: 37449088 PMCID: PMC10337592 DOI: 10.3389/fbioe.2023.1174075] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 06/15/2023] [Indexed: 07/18/2023] Open
Abstract
Biomedicine and tissue regeneration have made significant advancements recently, positively affecting the whole healthcare spectrum. This opened the way for them to develop their applications for revitalizing damaged tissues. Thus, their functionality will be restored. Cardiac tissue engineering (CTE) using curative procedures that combine biomolecules, biomimetic scaffolds, and cells plays a critical part in this path. Stimuli-responsive hydrogels (SRHs) are excellent three-dimensional (3D) biomaterials for tissue engineering (TE) and various biomedical applications. They can mimic the intrinsic tissues' physicochemical, mechanical, and biological characteristics in a variety of ways. They also provide for 3D setup, adequate aqueous conditions, and the mechanical consistency required for cell development. Furthermore, they function as competent delivery platforms for various biomolecules. Many natural and synthetic polymers were used to fabricate these intelligent platforms with innovative enhanced features and specialized capabilities that are appropriate for CTE applications. In the present review, different strategies employed for CTE were outlined. The light was shed on the limitations of the use of conventional hydrogels in CTE. Moreover, diverse types of SRHs, their characteristics, assembly and exploitation for CTE were discussed. To summarize, recent development in the construction of SRHs increases their potential to operate as intelligent, sophisticated systems in the reconstruction of degenerated cardiac tissues.
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Affiliation(s)
- Hussein M. El-Husseiny
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Benha University, Benha, Egypt
| | - Eman A. Mady
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
- Department of Animal Hygiene, Behavior and Management, Faculty of Veterinary Medicine, Benha University, Benha, Egypt
| | - Walaa A. El-Dakroury
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr, Egypt
| | - Ahmed S. Doghish
- Department of Biochemistry, Faculty of Pharmacy, Badr University in Cairo (BUC), Badr, Egypt
- Biochemistry and Molecular Biology Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, Egypt
| | - Ryou Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Japan
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Wu J, Sahoo JK, Li Y, Xu Q, Kaplan DL. Challenges in delivering therapeutic peptides and proteins: A silk-based solution. J Control Release 2022; 345:176-189. [PMID: 35157939 PMCID: PMC9133086 DOI: 10.1016/j.jconrel.2022.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 02/06/2023]
Abstract
Peptide- and protein-based therapeutics have drawn significant attention over the past few decades for the treatment of infectious diseases, genetic disorders, oncology, and many other clinical needs. Yet, protecting peptide- and protein-based drugs from degradation and denaturation during processing, storage and delivery remain significant challenges. In this review, we introduce the properties of peptide- and protein-based drugs and the challenges associated with their stability and delivery. Then, we discuss delivery strategies using synthetic polymers and their advantages and limitations. This is followed by a focus on silk protein-based materials for peptide/protein drug processing, storage, and delivery, as a path to overcome stability and delivery challenges with current systems.
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Affiliation(s)
- Junqi Wu
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Yamin Li
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Qiaobing Xu
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA.
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA.
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Recent progress in advanced biomaterials for long-acting reversible contraception. J Nanobiotechnology 2022; 20:138. [PMID: 35300702 PMCID: PMC8932341 DOI: 10.1186/s12951-022-01329-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/28/2022] [Indexed: 12/15/2022] Open
Abstract
Unintended pregnancy is a global issue with serious ramifications for women, their families, and society, including abortion, infertility, and maternal death. Although existing contraceptive strategies have been widely used in people's lives, there have not been satisfactory feedbacks due to low contraceptive efficacy and related side effects (e.g., decreased sexuality, menstrual cycle disorder, and even lifelong infertility). In recent years, biomaterials-based long-acting reversible contraception has received increasing attention from the viewpoint of fundamental research and practical applications mainly owing to improved delivery routes and controlled drug delivery. This review summarizes recent progress in advanced biomaterials for long-acting reversible contraception via various delivery routes, including subcutaneous implant, transdermal patch, oral administration, vaginal ring, intrauterine device, fallopian tube occlusion, vas deferens contraception, and Intravenous administration. In addition, biomaterials, especially nanomaterials, still need to be improved and prospects for the future in contraception are mentioned.
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El-Husseiny HM, Mady EA, Hamabe L, Abugomaa A, Shimada K, Yoshida T, Tanaka T, Yokoi A, Elbadawy M, Tanaka R. Smart/stimuli-responsive hydrogels: Cutting-edge platforms for tissue engineering and other biomedical applications. Mater Today Bio 2022; 13:100186. [PMID: 34917924 PMCID: PMC8669385 DOI: 10.1016/j.mtbio.2021.100186] [Citation(s) in RCA: 88] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/14/2021] [Accepted: 12/08/2021] [Indexed: 02/07/2023] Open
Abstract
Recently, biomedicine and tissue regeneration have emerged as great advances that impacted the spectrum of healthcare. This left the door open for further improvement of their applications to revitalize the impaired tissues. Hence, restoring their functions. The implementation of therapeutic protocols that merge biomimetic scaffolds, bioactive molecules, and cells plays a pivotal role in this track. Smart/stimuli-responsive hydrogels are remarkable three-dimensional (3D) bioscaffolds intended for tissue engineering and other biomedical purposes. They can simulate the physicochemical, mechanical, and biological characters of the innate tissues. Also, they provide the aqueous conditions for cell growth, support 3D conformation, provide mechanical stability for the cells, and serve as potent delivery matrices for bioactive molecules. Many natural and artificial polymers were broadly utilized to design these intelligent platforms with novel advanced characteristics and tailored functionalities that fit such applications. In the present review, we highlighted the different types of smart/stimuli-responsive hydrogels with emphasis on their synthesis scheme. Besides, the mechanisms of their responsiveness to different stimuli were elaborated. Their potential for tissue engineering applications was discussed. Furthermore, their exploitation in other biomedical applications as targeted drug delivery, smart biosensors, actuators, 3D and 4D printing, and 3D cell culture were outlined. In addition, we threw light on smart self-healing hydrogels and their applications in biomedicine. Eventually, we presented their future perceptions in biomedical and tissue regeneration applications. Conclusively, current progress in the design of smart/stimuli-responsive hydrogels enhances their prospective to function as intelligent, and sophisticated systems in different biomedical applications.
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Affiliation(s)
- Hussein M. El-Husseiny
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Eman A. Mady
- Department of Animal Hygiene, Behavior and Management, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Lina Hamabe
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Amira Abugomaa
- Faculty of Veterinary Medicine, Mansoura University, Mansoura, Dakahliya, 35516, Egypt
| | - Kazumi Shimada
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
- Division of Research Animal Laboratory and Translational Medicine, Research and Development Center, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Tomohiko Yoshida
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Takashi Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Aimi Yokoi
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Mohamed Elbadawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Ryou Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
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Li W, Qiao K, Zheng Y, Yan Y, Xie Y, Liu Y, Ren H. Preparation, mechanical properties, fatigue and tribological behavior of double crosslinked high strength hydrogel. J Mech Behav Biomed Mater 2021; 126:105009. [PMID: 34861520 DOI: 10.1016/j.jmbbm.2021.105009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/13/2021] [Accepted: 11/25/2021] [Indexed: 11/19/2022]
Abstract
Polyvinyl alcohol hydrogel (PVA-H) has been widely used in clinical transplantation because of its high water content, good biocompatibility and mechanical properties. However, PVA-H have some problems, such as low elongation at break, low fatigue resistance and high friction coefficient, which hinders its application in clinic. In this paper, a novel high-performance PVA hydrogel enhanced by chemical double crosslinking (CDC) method had been synthesized. The influences of chemical crosslinking agent concentration on mechanical properties, friction properties and fatigue properties of materials were systematically investigated, in order to meet the clinical application of artificial meniscus, artificial cartilage, nucleus pulposus and so on. As a result, due to the introduction of chemical bonds, CDC hydrogels have over 600% elongation at break, modulus loss after fatigue test was reduced by 42%, average coefficient during friction was reduced to 0.048, and biocompatibility performance was excellent. The PVA hydrogel enhanced by CDC method provides a new concept for us to prepare high-performance PVA hydrogel and a promising material to replace cartilage, meniscus, nucleus pulposus and other tissues.
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Affiliation(s)
- Weichao Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China
| | - Kun Qiao
- School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China
| | - Yudong Zheng
- School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China.
| | - Yu Yan
- Corrosion and Protection Center, Key Laboratory for Environmental Fracture (MOE), University of Science and Technology, Beijing, 100083, PR China
| | - Yajie Xie
- School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China
| | - Yang Liu
- School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China
| | - Huimin Ren
- School of Materials Science and Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China
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Qureshi D, Sahoo A, Mohanty B, Anis A, Kulikouskaya V, Hileuskaya K, Agabekov V, Sarkar P, Ray SS, Maji S, Pal K. Fabrication and Characterization of Poly (vinyl alcohol) and Chitosan Oligosaccharide-Based Blend Films. Gels 2021; 7:55. [PMID: 34066326 PMCID: PMC8162339 DOI: 10.3390/gels7020055] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/13/2021] [Accepted: 04/21/2021] [Indexed: 02/02/2023] Open
Abstract
In the present study, we report the development of poly (vinyl alcohol) (PVA) and chitosan oligosaccharide (COS)-based novel blend films. The concentration of COS was varied between 2.5-10.0 wt% within the films. The inclusion of COS added a brown hue to the films. FTIR spectroscopy revealed that the extent of intermolecular hydrogen bonding was most prominent in the film that contained 5.0 wt% of COS. The diffractograms showed that COS altered the degree of crystallinity of the films in a composition-dependent manner. As evident from the thermal analysis, COS content profoundly impacted the evaporation of water molecules from the composite films. Stress relaxation studies demonstrated that the blend films exhibited more mechanical stability as compared to the control film. The impedance profiles indicated the capacitive-dominant behavior of the prepared films. Ciprofloxacin HCl-loaded films showed excellent antimicrobial activity against Escherichia coli and Bacillus cereus. The prepared films were observed to be biocompatible. Hence, the prepared PVA/COS-based blend films may be explored for drug delivery applications.
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Affiliation(s)
- Dilshad Qureshi
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
| | - Ayasharani Sahoo
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
| | | | - Arfat Anis
- SABIC Polymer Research Center, Department of Chemical Engineering, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Viktoryia Kulikouskaya
- The Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus; (V.K.); (K.H.); (V.A.)
| | - Kseniya Hileuskaya
- The Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus; (V.K.); (K.H.); (V.A.)
| | - Vladimir Agabekov
- The Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus; (V.K.); (K.H.); (V.A.)
| | - Preetam Sarkar
- Department of Food Process Engineering, National Institute of Technology, Rourkela 769008, India;
| | - Sirsendu Sekhar Ray
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
| | - Samarendra Maji
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
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Fuchs S, Ernst AU, Wang LH, Shariati K, Wang X, Liu Q, Ma M. Hydrogels in Emerging Technologies for Type 1 Diabetes. Chem Rev 2020; 121:11458-11526. [DOI: 10.1021/acs.chemrev.0c01062] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Stephanie Fuchs
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Alexander U. Ernst
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Long-Hai Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Kaavian Shariati
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Xi Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Qingsheng Liu
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Minglin Ma
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
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Abstract
Regenerative medicine is a novel scientific field that employs the use of stem cells as cell-based therapy for the regeneration and functional restoration of damaged tissues and organs. Stem cells bear characteristics such as the capacity for self-renewal and differentiation towards specific lineages and, therefore, serve as a backup reservoir in case of tissue injuries. Therapeutically, they can be autologously or allogeneically transplanted for tissue regeneration; however, allogeneic stem cell transplantation can provoke host immune responses leading to a host-versus-transplant reaction. A probable solution to this problem is stem cell encapsulation, a technique that utilizes various biomaterials for the creation of a semi-permeable membrane that encases the stem cells. Stem cell encapsulation can be accomplished by employing a great variety of natural and/or synthetic hydrogels and offers many benefits in regenerative medicine, including protection from the host’s immune system and mechanical stress, improved cell viability, proliferation and differentiation, cryopreservation and controlled and continuous delivery of the stem-cell-secreted therapeutic agents. Here, in this review, we report and discuss almost all natural and synthetic hydrogels used in stem cell encapsulation, along with the benefits that these materials, alone or in combination, could offer to cell therapy through functional cell encapsulation.
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10
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The biocompatibility of biofuel cells operating inside the body. Biochem Soc Trans 2020; 48:867-879. [PMID: 32539103 DOI: 10.1042/bst20190618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/01/2020] [Accepted: 05/12/2020] [Indexed: 11/17/2022]
Abstract
In 1968 Wolfson et al. published the concept for producing energy inside the body using catalytic electrodes exposed to the body fluid as an electrolyte and utilising naturally occurring fuels such as glucose. Since then, the technology has advanced to enhance the levels of power using enzymes immobilised within three-dimensional bioelectrodes that are nanostructured. Current research in the field of enzymatic fuel cells is directed toward applying electrochemical and nanostructural expertise to increase the energy density, to increase the power density, to increase the operational stability, and to increase the voltage output. Nonetheless, biocompatibility remains the major challenge for increasing the life-time for implanted enzymatic biofuel cells. Here, we discuss the current issues for biocompatibility and suggest directions to enhance the design of biofuel cells so as to increase the life-time of implantation whilst maintaining sufficient performance to provide power for implanted medical devices.
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11
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Challenges for the Implantation of Symbiotic Nanostructured Medical Devices. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We discuss the perspectives of designing implantable medical devices that have the criterion of being symbiotic. Our starting point was whether the implanted device is intended to have any two-way (“duplex”) communication of energy or materials with the body. Such duplex communication extends the existing concepts of a biomaterial and biocompatibility to include the notion that it is important to consider the intended functional use of the implanted medical device. This demands a biomimetic approach to design functional symbiotic implantable medical devices that can be more efficient in mimicking what is happening at the molecular and cellular levels to create stable interfaces that allow for the unfettered exchanges of molecules between an implanted device and a body. Such a duplex level of communication is considered to be a necessary characteristic of symbiotic implanted medical devices that are designed to function for long periods of time inside the body to restore and assist the function of the body. We illustrate these perspectives with experience gained from implanting functional enzymatic biofuel cells.
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Mantha S, Pillai S, Khayambashi P, Upadhyay A, Zhang Y, Tao O, Pham HM, Tran SD. Smart Hydrogels in Tissue Engineering and Regenerative Medicine. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E3323. [PMID: 31614735 PMCID: PMC6829293 DOI: 10.3390/ma12203323] [Citation(s) in RCA: 341] [Impact Index Per Article: 68.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 01/01/2023]
Abstract
The field of regenerative medicine has tremendous potential for improved treatment outcomes and has been stimulated by advances made in bioengineering over the last few decades. The strategies of engineering tissues and assembling functional constructs that are capable of restoring, retaining, and revitalizing lost tissues and organs have impacted the whole spectrum of medicine and health care. Techniques to combine biomimetic materials, cells, and bioactive molecules play a decisive role in promoting the regeneration of damaged tissues or as therapeutic systems. Hydrogels have been used as one of the most common tissue engineering scaffolds over the past two decades due to their ability to maintain a distinct 3D structure, to provide mechanical support for the cells in the engineered tissues, and to simulate the native extracellular matrix. The high water content of hydrogels can provide an ideal environment for cell survival, and structure which mimics the native tissues. Hydrogel systems have been serving as a supportive matrix for cell immobilization and growth factor delivery. This review outlines a brief description of the properties, structure, synthesis and fabrication methods, applications, and future perspectives of smart hydrogels in tissue engineering.
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Affiliation(s)
- Somasundar Mantha
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Sangeeth Pillai
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Parisa Khayambashi
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Akshaya Upadhyay
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Yuli Zhang
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Owen Tao
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Hieu M Pham
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
| | - Simon D Tran
- McGill Craniofacial Tissue Engineering and Stem Cells Laboratory, Faculty of Dentistry, McGill University, 3640 University Street, Montreal, QC H3A 0C7, Canada.
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13
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Sheiko SS, Dobrynin AV. Architectural Code for Rubber Elasticity: From Supersoft to Superfirm Materials. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01127] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sergei S. Sheiko
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Andrey V. Dobrynin
- Department of Polymer Science, University of Akron, Akron, Ohio 44325-3909, United States
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Kim IG, Hwang MP, Park JS, Kim S, Kim J, Kang HJ, Subbiah R, Ko UH, Shin JH, Kim C, Choi D, Park K. Stretchable ECM Patch Enhances Stem Cell Delivery for Post-MI Cardiovascular Repair. Adv Healthc Mater 2019; 8:e1900593. [PMID: 31304685 DOI: 10.1002/adhm.201900593] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Indexed: 12/18/2022]
Abstract
Current cell-based therapies administered after myocardial infarction (MI) show limited efficacy due to subpar cell retention in a dynamically beating heart. In particular, cardiac patches generally provide a cursory level of cell attachment due to the lack of an adequate microenvironment. From this perspective, decellularized cell-derived ECM (CDM) is attractive in its recapitulation of a natural biophysical environment for cells. Unfortunately, its weak physical property renders it difficult to retain in its original form, limiting its full potential. Here, a novel strategy to peel CDM off from its underlying substrate is proposed. By physically stamping it onto a polyvinyl alcohol hydrogel, the resulting stretchable extracellular matrix (ECM) membrane preserves the natural microenvironment of CDM, thereby conferring a biological interface to a viscoelastic membrane. Its various mechanical and biological properties are characterized and its capacity to improve cardiomyocyte functionality is demonstrated. Finally, evidence of enhanced stem cell delivery using the stretchable ECM membrane is presented, which leads to improved cardiac remodeling in a rat MI model. A new class of material based on natural CDM is envisioned for the enhanced delivery of cells and growth factors that have a known affinity with ECM.
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Affiliation(s)
- In Gul Kim
- Center for BiomaterialsKorea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
- Department of Otorhinolaryngology‐Head and Neck SurgerySeoul National University Hospital Seoul 03080 Republic of Korea
| | - Mintai P. Hwang
- Center for BiomaterialsKorea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
- Meinig School of Biomedical EngineeringCornell University Ithaca NY 14853 USA
| | - Jin Sil Park
- Severance Cardiovascular HospitalYonsei University Health System Seoul 03722 Republic of Korea
| | - Su‐Hyun Kim
- Center for NeuroscienceKorea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
| | - Jung‐Hyun Kim
- Severance Cardiovascular HospitalYonsei University Health System Seoul 03722 Republic of Korea
| | - Hyo Jin Kang
- Severance Cardiovascular HospitalYonsei University Health System Seoul 03722 Republic of Korea
| | - Ramesh Subbiah
- Center for BiomaterialsKorea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
| | - Ung Hyun Ko
- Department of Mechanical EngineeringKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Jennifer H. Shin
- Department of Mechanical EngineeringKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea
| | - Chong‐Hyun Kim
- Center for NeuroscienceKorea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
| | - Donghoon Choi
- Severance Cardiovascular HospitalYonsei University Health System Seoul 03722 Republic of Korea
| | - Kwideok Park
- Center for BiomaterialsKorea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
- Division of Bio‐Medical Science and TechnologyUniversity of Science and Technology (UST) Seoul 02792 Republic of Korea
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15
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Phenylboronic acid functionalized silica nanoparticles with enlarged ordered mesopores for efficient insulin loading and controlled release. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.03.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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17
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Donnelly PE, Imbert L, Culley KL, Warren RF, Chen T, Maher SA. Self-assembled monolayers of phosphonates promote primary chondrocyte adhesion to silicon dioxide and polyvinyl alcohol materials. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2019; 30:215-232. [PMID: 30588859 PMCID: PMC6375775 DOI: 10.1080/09205063.2018.1563847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 12/22/2018] [Indexed: 10/27/2022]
Abstract
The optimal solution for articular cartilage repair has not yet been identified, in part because of the challenges in achieving integration with the host. Coatings have the potential to transform the adhesive features of surfaces, but their application to cartilage repair has been limited. Self-assembled monolayer of phosphonates (SAMPs) have been demonstrated to increase the adhesion of various immortalized cell types to metal and polymer surfaces, but their effect on primary chondrocyte adhesion has not been studied. The objective of this study was to investigate the response of primary chondrocytes to SAMP coatings. We hypothesized a SAMP terminated with an α,ω-bisphosphonic acid, in particular butane-1,4-diphosphonic acid, would increase the number of adherent primary chondrocytes to polyvinyl alcohol (PVA). To test our hypothesis, we first established our ability to successfully modify silicon dioxide (SiO2) surfaces to enable chondrocytes to attach to the surface, without substantial changes in gene expression. Secondly, we applied identical chemistry to PVA, and quantified chondrocyte adhesion. SAMP modification to SiO2 increased chondrocyte adhesion by ×3 after 4 hr and ×4.5 after 24 hr. PVA modification with SAMPs increased chondrocyte adhesion by at least ×31 after 4 and 24 hours. Changes in cell morphology indicated that SAMP modification led to improved chondrocyte adhesion and spreading, without changes in gene expression. In summary, we modified SiO2 and PVA with SAMPs and observed an increase in the number of adherent primary bovine chondrocytes at 4 and 24 hr post-seeding. Mechanisms of chondrocyte interaction with SAMP-modified surfaces require further investigation.
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Affiliation(s)
- Patrick E. Donnelly
- Orthopaedic Soft Tissue Research Program, Hospital for Special Surgery, New York, NY 10021, USA
- Department of Biomechanics, Hospital for Special Surgery, New York, NY 10021, USA
| | - Laurianne Imbert
- Musculoskeletal Integrity Program, Hospital for Special Surgery, New York, NY 10021, USA
| | - Kirsty L. Culley
- Orthopaedic Soft Tissue Research Program, Hospital for Special Surgery, New York, NY 10021, USA
| | - Russell F. Warren
- Orthopaedic Soft Tissue Research Program, Hospital for Special Surgery, New York, NY 10021, USA
| | - Tony Chen
- Orthopaedic Soft Tissue Research Program, Hospital for Special Surgery, New York, NY 10021, USA
- Department of Biomechanics, Hospital for Special Surgery, New York, NY 10021, USA
| | - Suzanne A. Maher
- Orthopaedic Soft Tissue Research Program, Hospital for Special Surgery, New York, NY 10021, USA
- Department of Biomechanics, Hospital for Special Surgery, New York, NY 10021, USA
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18
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Biomaterials of PVA and PVP in medical and pharmaceutical applications: Perspectives and challenges. Biotechnol Adv 2018; 37:109-131. [PMID: 30472307 DOI: 10.1016/j.biotechadv.2018.11.008] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 10/25/2018] [Accepted: 11/20/2018] [Indexed: 01/12/2023]
Abstract
Poly(vinyl alcohol) (PVA) has attracted considerable research interest and is recognized among the largest volume of synthetic polymers that have been produced worldwide for almost one century. This is due to its exceptional properties which dictated its extensive use in a wide variety of applications, especially in medical and pharmaceutical fields. However, studies revealed that PVA-based biomaterials present some limitations that can restrict their use or performances. To overcome these limitations, various methods have been reported, among which blending with poly(vinylpyrrolidone) (PVP) showed promising results. Thus, our aim was to offer a systematic overview on the current state concerning the preparation, properties and various applications of biomaterials based on synergistic effect of mixtures between PVA and PVP. Future trends towards where the biomaterials research is headed were discussed, showing the promising opportunities that PVA and PVP can offer.
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19
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Banerjee H, Suhail M, Ren H. Hydrogel Actuators and Sensors for Biomedical Soft Robots: Brief Overview with Impending Challenges. Biomimetics (Basel) 2018; 3:E15. [PMID: 31105237 PMCID: PMC6352708 DOI: 10.3390/biomimetics3030015] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/12/2018] [Accepted: 06/25/2018] [Indexed: 12/22/2022] Open
Abstract
There are numerous developments taking place in the field of biorobotics, and one such recent breakthrough is the implementation of soft robots-a pathway to mimic nature's organic parts for research purposes and in minimally invasive surgeries as a result of their shape-morphing and adaptable features. Hydrogels (biocompatible, biodegradable materials that are used in designing soft robots and sensor integration), have come into demand because of their beneficial properties, such as high water content, flexibility, and multi-faceted advantages particularly in targeted drug delivery, surgery and biorobotics. We illustrate in this review article the different types of biomedical sensors and actuators for which a hydrogel acts as an active primary material, and we elucidate their limitations and the future scope of this material in the nexus of similar biomedical avenues.
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Affiliation(s)
- Hritwick Banerjee
- Department of Biomedical Engineering, Faculty of Engineering, 4 Engineering Drive 3, National University of Singapore, Singapore 117583, Singapore.
- Singapore Institute for Neurotechnology (SINAPSE), Centre for Life Sciences, National University of Singapore, 28 Medical Drive, #05-COR, Singapore 117456, Singapore.
| | - Mohamed Suhail
- Department of Biomedical Engineering, Faculty of Engineering, 4 Engineering Drive 3, National University of Singapore, Singapore 117583, Singapore.
- Department of Mechancial Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India.
| | - Hongliang Ren
- Department of Biomedical Engineering, Faculty of Engineering, 4 Engineering Drive 3, National University of Singapore, Singapore 117583, Singapore.
- Singapore Institute for Neurotechnology (SINAPSE), Centre for Life Sciences, National University of Singapore, 28 Medical Drive, #05-COR, Singapore 117456, Singapore.
- National University of Singapore (Suzhou) Research Institute (NUSRI), 377 Lin Quan Street, Suzhou Industrial Park, Suzhou 215123, China.
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20
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Kucińska-Lipka J. Polyurethanes Crosslinked with Poly(vinyl alcohol) as a Slowly-Degradable and Hydrophilic Materials of Potential Use in Regenerative Medicine. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E352. [PMID: 29495510 PMCID: PMC5872931 DOI: 10.3390/ma11030352] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/12/2018] [Accepted: 02/22/2018] [Indexed: 01/29/2023]
Abstract
Novel, slowly-degradable and hydrophilic materials with proper mechanical properties and surface characteristics are in great demand within the biomedical field. In this paper, the design, synthesis, and characterization of polyurethanes (PUR) crosslinked with poly(vinyl alcohol) (PVA) as a new proposition for regenerative medicine is described. PVA-crosslinked PURs were synthesized by a two-step polymerization performed in a solvent (dimethylsulfoxide, DMSO). The raw materials used for the synthesis of PVA-crosslinked PURs were poly(ε-caprolactone) (PCL), 1,6-hexamethylene diisocyanate (HDI), and PVA as a crosslinking agent. The obtained materials were studied towards their physicochemical, mechanical, and biological performance. The tests revealed contact angle of the materials surface between 38-47° and tensile strength in the range of 41-52 MPa. Mechanical characteristics of the obtained PURs was close to the characteristics of native human bone such as the cortical bone (TSb = 51-151 MPa) or the cancellous bone (TSb = 10-20 MPa). The obtained PVA-crosslinked PURs did not show significant progress of degradation after 3 months of incubation in a phosphate-buffered saline (PBS). Accordingly, the obtained materials may behave similar to slowly-degradable materials, which can provide long-term physical support in, for example, tissue regeneration, as well as providing a uniform calcium deposition on the material surface, which may influence, for example, bone restoration. A performed short-term hemocompatibility study showed that obtained PVA-crosslinked PURs do not significantly influence blood components, and a cytotoxicity test performed with the use of MG 63 cell line revealed the great cytocompatibility of the obtained materials. According to the performed studies, such PVA-crosslinked PURs may be a suitable proposition for the field of tissue engineering in regenerative medicine.
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Affiliation(s)
- Justyna Kucińska-Lipka
- Department of Polymers Technology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza St. 11/12, 80-233 Gdansk, Poland.
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21
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Jamal A, Shahzadi L, Ahtzaz S, Zahid S, Chaudhry AA, Rehman IU, Yar M. Identification of anti-cancer potential of doxazocin: Loading into chitosan based biodegradable hydrogels for on-site delivery to treat cervical cancer. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 82:102-109. [DOI: 10.1016/j.msec.2017.08.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 07/24/2017] [Accepted: 08/10/2017] [Indexed: 12/19/2022]
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22
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Wang FS, Wang TF, Lu HH, Ao-Ieong WS, Wang J, Chen HL, Peng CH. Highly Stretchable Free-Standing Poly(acrylic acid)-block-poly(vinyl alcohol) Films Obtained from Cobalt-Mediated Radical Polymerization. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00700] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fu-Sheng Wang
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Tzu-Fang Wang
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Hung-Hsun Lu
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Wai-Sam Ao-Ieong
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Jane Wang
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Hsin-Lung Chen
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Chi-How Peng
- Department
of Chemistry and Frontier Research Center on Fundamental
and Applied Sciences of Matters and ‡Department of Chemical Engineering, National Tsing Hua University 101, Sec 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
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23
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Zhang Z, Wu Y, Kuang G, Liu S, Zhou D, Chen X, Jing X, Huang Y. Pt(iv) prodrug-backboned micelle and DCA loaded nanofibers for enhanced local cancer treatment. J Mater Chem B 2017; 5:2115-2125. [DOI: 10.1039/c7tb00178a] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
An implantable Pt(iv) prodrug-backboned micelle and DCA loaded electrospun nanofiber system was developed for local combination chemotherapy.
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Affiliation(s)
- Zhiyun Zhang
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
- University of Chinese Academy of Sciences
| | - Yanjuan Wu
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
- University of Chinese Academy of Sciences
| | - Gaizhen Kuang
- Department of Gastroenterology
- the Second Affiliated Hospital
- Medical School of Xi'an Jiaotong University
- Xi'an
- P. R. China
| | - Shi Liu
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Dongfang Zhou
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Xiabin Jing
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
| | - Yubin Huang
- State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- P. R. China
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24
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Liu HL, Liu GM, Zhang GZ. Modulation of Self-healing of Polyion Complex Hydrogel by Ion-specific Effects. CHINESE J CHEM PHYS 2016. [DOI: 10.1063/1674-0068/29/cjcp1605109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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25
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Abedi G, Sotoudeh A, Soleymani M, Shafiee A, Mortazavi P, Aflatoonian MR. A collagen-poly(vinyl alcohol) nanofiber scaffold for cartilage repair. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 22:2445-55. [PMID: 21144162 DOI: 10.1163/092050610x540503] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Articular cartilage has a limited capacity for self-repair. Untreated injuries of cartilage may lead to osteoarthritis. This problem demands new effective methods to reconstruct articular cartilage. Mesenchymal stem cells (MSCs) have the proclivity to differentiate along multiple lineages giving rise to new bone, cartilage, muscle, or fat. This study was an animal model for autologous effects of transplantation of MSCs with a collagen-poly(vinyl alcohol) (PVA) scaffold into full-thickness osteochondral defects of the stifle joint in the rabbit as an animal model. A group of 10 rabbits had a defect created experimentally in the full thickness of articular cartilage penetrated into the subchondral space in the both stifle joints. The defect in the right stifle was filled with MSCs/collagen-PVA scaffold (group I), and in the left stifle, the defect was left without any treatment as the control group (group II). Specimens were harvested at 12 weeks after implantation, examined histologically for morphologic features, and stained immunohistochemically for type-II collagen. Histology observation showed that the MSCs/collagen-PVA repair group had better chondrocyte morphology, continuous subchondral bone, and much thicker newly formed cartilage compared with the control group at 12 weeks post operation. There was a significant difference in histological grading score between these two groups. The present study suggested that the hybrid collagen-PVA scaffold might serve as a new way to keep the differentiation of MSCs for enhancing cartilage repair.
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Affiliation(s)
- Gholamreza Abedi
- a Department of Surgery, Faculty of Specialized Veterinary Sciences, Islamic Azad University, Science & Research Branch, Tehran, Iran
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26
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Morales Hurtado M, de Vries EG, Zeng X, van der Heide E. A tribo-mechanical analysis of PVA-based building-blocks for implementation in a 2-layered skin model. J Mech Behav Biomed Mater 2016; 62:319-332. [PMID: 27236420 DOI: 10.1016/j.jmbbm.2016.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/28/2016] [Accepted: 05/02/2016] [Indexed: 01/14/2023]
Abstract
Poly(vinyl) alcohol hydrogel (PVA) is a well-known polymer widely used in the medical field due to its biocompatibility properties and easy manufacturing. In this work, the tribo-mechanical properties of PVA-based blocks are studied to evaluate their suitability as a part of a structure simulating the length scale dependence of human skin. Thus, blocks of pure PVA and PVA mixed with Cellulose (PVA-Cel) were synthesised via freezing/thawing cycles and their mechanical properties were determined by Dynamic Mechanical Analysis (DMA) and creep tests. The dynamic tests addressed to elastic moduli between 38 and 50kPa for the PVA and PVA-Cel, respectively. The fitting of the creep compliance tests in the SLS model confirmed the viscoelastic behaviour of the samples with retardation times of 23 and 16 seconds for the PVA and PVA-Cel, respectively. Micro indentation tests were also achieved and the results indicated elastic moduli in the same range of the dynamic tests. Specifically, values between 45-55 and 56-81kPa were obtained for the PVA and PVA-Cel samples, respectively. The tribological results indicated values of 0.55 at low forces for the PVA decreasing to 0.13 at higher forces. The PVA-Cel blocks showed lower friction even at low forces with values between 0.2 and 0.07. The implementation of these building blocks in the design of a 2-layered skin model (2LSM) is also presented in this work. The 2LSM was stamped with four different textures and their surface properties were evaluated. The hydration of the 2LSM was also evaluated with a corneometer and the results indicated a gradient of hydration comparable to the human skin.
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Affiliation(s)
- M Morales Hurtado
- Surface Technology and Tribology Group, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands.
| | - E G de Vries
- Surface Technology and Tribology Group, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands
| | - X Zeng
- Surface Technology and Tribology Group, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands; Advanced lubricating Materials Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Haike Road 100, Pudong, Shanghai, China
| | - E van der Heide
- Surface Technology and Tribology Group, University of Twente, Drienerlolaan 5, 7522 NB Enschede, The Netherlands; TU Delft, Faculty of Civil Engineering and Geosciences, Stevinweg 1, 2628 CN Delft, The Netherlands
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27
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Qian C, Yu J, Chen Y, Hu Q, Xiao X, Sun W, Wang C, Feng P, Shen QD, Gu Z. Light-Activated Hypoxia-Responsive Nanocarriers for Enhanced Anticancer Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3313-20. [PMID: 26948067 PMCID: PMC4998838 DOI: 10.1002/adma.201505869] [Citation(s) in RCA: 341] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/21/2016] [Indexed: 05/03/2023]
Abstract
A light-activated hypoxia-responsive conjugated polymer-based nanocarrier is developed for efficiently producing singlet oxygen ((1) O2 ) and inducing hypoxia to promote release of its cargoes in tumor cells, leading to enhanced antitumor efficacy. This dual-responsive nanocarrier provides an innovative design guideline for enhancing traditional photodynamic therapeutic efficacy integrated with a controlled drug-release modality.
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Affiliation(s)
- Chenggen Qian
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Department of Polymer Science & Engineering and Key Laboratory of High Performance, Polymer Materials & Technology of MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jicheng Yu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Yulei Chen
- Department of Polymer Science & Engineering and Key Laboratory of High Performance, Polymer Materials & Technology of MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Quanyin Hu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Xuanzhong Xiao
- Department of Polymer Science & Engineering and Key Laboratory of High Performance, Polymer Materials & Technology of MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Wujin Sun
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Chao Wang
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Peijian Feng
- Department of Polymer Science & Engineering and Key Laboratory of High Performance, Polymer Materials & Technology of MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Qun-Dong Shen
- Department of Polymer Science & Engineering and Key Laboratory of High Performance, Polymer Materials & Technology of MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhen Gu
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
- Division of Molecular Pharmaceutics and Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
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28
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Major R, Trembecka-Wójciga K, Kot M, Lackner JM, Wilczek P, Major B. In vitro hemocompatibility on thin ceramic and hydrogel films deposited on polymer substrate performed in arterial flow conditions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 61:15-22. [PMID: 26838818 DOI: 10.1016/j.msec.2015.12.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/23/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
Hydrogel coatings were stabilized by titanium carbonitride a-C:H:Ti:N buffer layers deposited directly onto the polyurethane (PU) substrate beneath a final hydrogel coating. Coatings of a-C:H:Ti:N were deposited using a hybrid method of pulsed laser deposition (PLD) and magnetron sputtering (MS) under high vacuum conditions. The influence of the buffer a-C:H:Ti:N layer on the hydrogel coating was analysed by means of a multi-scale microstructure study. Mechanical tests were performed at an indentation load of 5 mN using Berkovich indenter geometry. Haemocompatible analyses were performed in vitro using a blood flow simulator. The blood-material interaction was analysed under dynamic conditions. The coating fabrication procedure improved the coating stability due to the deposition of the amorphous titanium carbonitride buffer layer.
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Affiliation(s)
- Roman Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, Krakow, Poland.
| | - Klaudia Trembecka-Wójciga
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, Krakow, Poland
| | - Marcin Kot
- AGH University of Science and Technology, Faculty of Mechanical, Engineering and Robotics, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Juergen M Lackner
- Joanneum Research Forschungs-GmbH, Materials - Functional Surfaces, Leoben, Austria
| | - Piotr Wilczek
- Heart Prosthesis Institute, Bioengineering Laboratory, Wolnosci 345A, 41-800 Zabrze, Poland
| | - Boguslaw Major
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, Krakow, Poland
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Bhullar SK, Özsel BK, Yadav R, Kaur G, Chintamaneni M, Buttar HS. Antibacterial activity of combination of synthetic and biopolymer non-woven structures. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2015; 12:289-94. [PMID: 26124061 DOI: 10.1515/jcim-2015-0027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 06/08/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Fibrous structures and synthetic polymer blends offer potential usages in making biomedical devices, textiles used in medical practices, food packaging, tissue engineering, environmental applications and biomedical arena. These products are also excellent candidates for building scaffolds to grow stem cells for implantation, to make tissue engineering grafts, to make stents to open up blood vessels caused by atherosclerosis or narrowed by blood clots, for drug delivery systems for micro- to nano-medicines, for transdermal patches, and for healing of wounds and burn care. The current study was designed to evaluate the antimicrobial activity of woven and non-woven forms of nano- and macro-scale blended polymers having biocompatible and biodegradable characteristics. METHODS The antimicrobial activity of non-woven fibrous structures created with the combination of synthetic and biopolymer was assessed using Gram-negative, Gram-positive bacteria, such as Staphylococcus aureus, Proteus vulgaris, Escherichia coli and Enterobacter aerogenes using pour plate method. Structural evaluation of the fabricated samples was performed by Fourier transform infrared spectroscopy. RESULTS Broad spectrum antibacterial activities were found from the tested materials consisting of polyvinyl alcohol (PVA) with chitosan and nylon-6 combined with chitosan and formic acid. CONCLUSIONS The combination of PVA with chitosan was more bactericidal or bacteriostatic than that of nylon-6 combined with chitosan and formic acid. PVA combination with chitosan appears to be a broad-spectrum antimicrobial agent.
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Wang E, Batra S, Cakmak M. A real time study on drying and the mechano-optical behavior of polyvinyl alcohol films in solid and swollen state. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.04.072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Luo W, Zhang S, Li P, Xu R, Zhang Y, Liang L, Wood CD, Lu Q, Tan B. Surfactant-free CO2-in-water emulsion-templated poly (vinyl alcohol) (PVA) hydrogels. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.02.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Chronic nonhealing wounds are a major source of morbidity and mortality in bed-ridden and diabetic patients. Monitoring of physical and chemical parameters important in wound healing and remodeling process can be of immense benefit for optimum management of such lesions. Low-cost flexible polymeric and paper-based substrates are attractive platforms for fabrication of such sensors. In this review, we discuss recent advances in flexible physiochemical sensors for chronic wound monitoring. After a brief introduction to wound healing process and commercial wound dressings, we describe various flexible biocompatible substrates that can be used as the base platform for integration of wound monitoring sensors. We will then discuss several fabrication methods that can be utilized to integrate physical and chemical sensors onto such substrates. Finally, we will present physical and chemical sensors developed for monitoring wound microenvironment and outline future development venues.
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Carretti E, Matarrese C, Fratini E, Baglioni P, Dei L. Physicochemical characterization of partially hydrolyzed poly(vinyl acetate)-borate aqueous dispersions. SOFT MATTER 2014; 10:4443-4450. [PMID: 24818671 DOI: 10.1039/c4sm00355a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The dynamic and structural properties of Highly Viscous Polymeric Dispersions (HVPDs), constituted of polyvinyl alcohol obtained from the 75% hydrolysis (75PVA) of polyvinlyl acetate (PVAc) cross-linked with borate ions, were studied as a function of the 75PVA concentration at a constant ratio between the OH groups and the borate ions (OH/B(OH)4(-)). The threshold 75PVA concentration C* necessary for the formation of the three-dimensional network was determined by flow rheology. The oscillating rheology measurements were performed in the linear viscoelastic region; the relaxation spectra calculated from the frequency sweep curves showed only one peak whose width increased upon increasing the 75PVA concentration due to the broadening of the relaxation modes. The dependence of the mean relaxation time τH upon the concentration of 75PVA followed a power law expression (τH ∼ C(x) with x = 1.9) indicating that τH referred to a sticky reptation mechanism and that water was a good solvent for 75PVA as confirmed also by small angle X-rays scattering (SAXS) investigation. The HVPDs were used for the removal of grime layers from the surface of Carlo Carrà (1881-1966) paints decorating the walls of the Palazzo di Giustizia in Milan, Italy.
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Affiliation(s)
- E Carretti
- Department of Chemistry & CSGI Consortium, University of Florence, via della Lastruccia, 3 - 50019 Sesto Fiorentino, Florence, Italy.
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Sengupta D, Waldman SD, Li S. From In Vitro to In Situ Tissue Engineering. Ann Biomed Eng 2014; 42:1537-45. [DOI: 10.1007/s10439-014-1022-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 04/29/2014] [Indexed: 01/09/2023]
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de Vos P, Lazarjani HA, Poncelet D, Faas MM. Polymers in cell encapsulation from an enveloped cell perspective. Adv Drug Deliv Rev 2014; 67-68:15-34. [PMID: 24270009 DOI: 10.1016/j.addr.2013.11.005] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 08/26/2013] [Accepted: 11/13/2013] [Indexed: 02/07/2023]
Abstract
In the past two decades, many polymers have been proposed for producing immunoprotective capsules. Examples include the natural polymers alginate, agarose, chitosan, cellulose, collagen, and xanthan and synthetic polymers poly(ethylene glycol), polyvinyl alcohol, polyurethane, poly(ether-sulfone), polypropylene, sodium polystyrene sulfate, and polyacrylate poly(acrylonitrile-sodium methallylsulfonate). The biocompatibility of these polymers is discussed in terms of tissue responses in both the host and matrix to accommodate the functional survival of the cells. Cells should grow and function in the polymer network as adequately as in their natural environment. This is critical when therapeutic cells from scarce cadaveric donors are considered, such as pancreatic islets. Additionally, the cell mass in capsules is discussed from the perspective of emerging new insights into the release of so-called danger-associated molecular pattern molecules by clumps of necrotic therapeutic cells. We conclude that despite two decades of intensive research, drawing conclusions about which polymer is most adequate for clinical application is still difficult. This is because of the lack of documentation on critical information, such as the composition of the polymer, the presence or absence of confounding factors that induce immune responses, toxicity to enveloped cells, and the permeability of the polymer network. Only alginate has been studied extensively and currently qualifies for application. This review also discusses critical issues that are not directly related to polymers and are not discussed in the other reviews in this issue, such as the functional performance of encapsulated cells in vivo. Physiological endocrine responses may indeed not be expected because of the many barriers that the metabolites encounter when traveling from the blood stream to the enveloped cells and back to circulation. However, despite these diffusion barriers, many studies have shown optimal regulation, allowing us to conclude that encapsulated grafts do not always follow nature's course but are still a possible solution for many endocrine disorders for which the minute-to-minute regulation of metabolites is mandatory.
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Alexandre N, Ribeiro J, Gärtner A, Pereira T, Amorim I, Fragoso J, Lopes A, Fernandes J, Costa E, Santos-Silva A, Rodrigues M, Santos JD, Maurício AC, Luís AL. Biocompatibility and hemocompatibility of polyvinyl alcohol hydrogel used for vascular grafting--In vitro and in vivo studies. J Biomed Mater Res A 2014; 102:4262-75. [PMID: 24488670 DOI: 10.1002/jbm.a.35098] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 01/21/2014] [Indexed: 11/08/2022]
Abstract
Polyvinyl alcohol hydrogel (PVA) is a synthetic polymer with an increasing application in the biomedical field that can potentially be used for vascular grafting. However, the tissue and blood-material interactions of such gels and membranes are unknown in detail. The objectives of this study were to: (a) assess the biocompatibility and (b) hemocompatibility of PVA-based membranes in order to get some insight into its potential use as a vascular graft. PVA was evaluated isolated or in copolymerization with dextran (DX), a biopolymer with known effects in blood coagulation homeostasis. The effects of the mesenchymal stem cells (MSCs) isolated from the umbilical cord Wharton's jelly in the improvement of PVA biocompatibility and in the vascular regeneration were also assessed. The biocompatibility of PVA was evaluated by the implantation of membranes in subcutaneous tissue using an animal model (sheep). Histological samples were assessed and the biological response parameters such as polymorphonuclear neutrophilic leucocytes and macrophage scoring evaluated in the implant/tissue interface by International Standards Office (ISO) Standard 10993-6 (annex E). According to the scoring system based on those parameters, a total value was obtained for each animal and for each experimental group. The in vitro hemocompatibility studies included the classic hemolysis assay and both human and sheep bloods were used. Relatively to biocompatibility results, PVA was slightly irritant to the surrounding tissues; PVA-DX or PVA plus MSCs groups presented the lowest score according to ISO Standard 10993-6. Also, PVA was considered a nonhemolytic biomaterial, presenting the lowest values for hemolysis when associated to DX.
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Affiliation(s)
- Nuno Alexandre
- Departamento de Zootecnia, Universidade de Évora (UE), Pólo da Mitra, Apartado 94, 7002-554, Évora, Portugal; Instituto de Ciências Agrárias e Ambientais Mediterrânicas (ICAAM), Universidade de Évora (UE), Pólo da Mitra, Apartado 94, 7002-554, Évora, Portugal
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Jiang S, Su Z, Wang X, Liu S, Yu Y. Development of a new tissue-equivalent material applied to optimizing surgical accuracy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3768-74. [DOI: 10.1016/j.msec.2013.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 04/23/2013] [Accepted: 05/02/2013] [Indexed: 11/26/2022]
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Abstract
Pure PVA and composite thin films of poly vinyl alcohol (PVA)/Titanium dioxide (TiO2) were prepared on pre-cleaned glass substrates by Dip Coating Technique (DCT) and Metal Organic Deposition Technique (MODT). EDS and FTIR spectrum were used to identify the composition of the prepared films. The vibrational peaks observed at 1260 cm-1 and 851 cm-1 are assigned to C–C stretching and CH rocking of PVA. The characteristic band appearing at 1432 cm-1 is assigned to C–H bend of CH2 of PVA. The bands observed around 847 cm-1 and 601cm-1 belong to the asymmetric stretching of Ti–O–Ti groups. The last band at 460 cm-1 is due to the bending mode of Ti–O–Ti. The bands covered by Ti-O were located at 540, 700 and 950 cm-1. From the FTIR spectra, it is observed that some of the peaks of composite films were shifted and some of them were disappeared with respect to the pure compounds. This results manifested the conclusion about the specific interactions in composite polymer matrices and hence the complexation. Thus, complex formation in the composite polymer matrices has been confirmed from this analysis. The thickness of the coated films were measured by using an electronic thickness measuring instrument (Tesatronic-TTD-20), gravimetric method and cross checked by optical spectrophotometer. XRD spectra indicated the amorphous nature of the films. Surface morphology of the coated films was studied by scanning electron microscope (SEM). The surface revealed no pits and pin holes on the surface. Both as grown and annealed films showed predominantly amorphous nature. The observed surface morphology and thermal stability indicated that these films could be used as dielectric layer in organic thin film transistors.
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Heo YJ, Takeuchi S. Towards smart tattoos: implantable biosensors for continuous glucose monitoring. Adv Healthc Mater 2013. [PMID: 23184404 DOI: 10.1002/adhm.201200167] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Diabetes can strike at any age, from childhood to adulthood, and lasts a lifetime. Thus, it is important to find ways to increase the quality of life for diabetic patients through intensive, continuous care of blood glucose concentrations. Glucose biosensors that are implanted under the skin are promising for continuous glucose monitoring because they can constantly read blood glucose concentrations and signal a warning in case of hypo- or hyperglycemia. The demand for subcutaneous glucose biosensors has led to the development of many glucose-sensing principles and sensor designs. This Review covers the effort to develop subcutaneous glucose biosensors, including the glucose-sensing principles, and discusses their current status for in vivo monitoring. In addition, the Review examines the future prospects for intensive diabetes care.
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Affiliation(s)
- Yun Jung Heo
- Institute of Industrial Science, The University of Tokyo, Meguro-ku, Tokyo, Japan
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Kundu A, Layek RK, Kuila A, Nandi AK. Highly fluorescent graphene oxide-poly(vinyl alcohol) hybrid: an effective material for specific Au3+ ion sensors. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5576-5582. [PMID: 23009213 DOI: 10.1021/am301467z] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have developed a new highly fluorescent graphene oxide (GO)/poly(vinyl alcohol) (PVA) hybrid (GO-PVA) in an acidic medium (pH 4). Fourier transform infrared (FTIR) spectra indicate the formation of hydrogen bonds between the hydroxy group of PVA and the hydroxy groups of GO. The hybrid is highly fluorescent, because of passivation by hydrogen bonding, as evident from Raman spectra. The quantum yields of GO-PVA hybrids are higher than that of GO. The fluorescent microscopic images of the hybrids exhibit a fibrillar morphology, and all of them emit highly intense green light. Field-emission scanning electron microscopy (FESEM) micrographs also show a fibrillar morphology, which is produced due to the supramolecular organization of GO-PVA complex. The highly fluorescent GO-PVA1 hybrid has been used as a fascinating tool for selective sensing of Au(3+) ions in aqueous media with a detectable limit of ~275 ppb. The sensitivity of the Au(3+) ion (300 μM) in the presence of 600 μM concentrations of each ion (Cu(2+), Ag(+), Mg(2+), Ca(2+), Zn(2+), K(+), Pb(2+), Co(2+), Ni(2+), Pd(2+), Fe(2+), Fe(3+), and Cr(3+)), taken together, is unique, exhibiting a quenching efficiency of 76%. The quenching efficiency in the presence of a biologically analogous mixture (d-glucose, d-lysine, BSA, Na(+), K(+), Ca(2+), Mg(2+), Zn(2+)) (600 μM each) is 73%, which suggests that the GO-PVA1 hybrid is an efficient sensor of Au(3+) ions. The average lifetime of GO at pH 4 increases in the GO-PVA1 hybrid, indicating the formation of a more stable excited state but the increase in lifetime value after addition of Au(3+) salt solution to the hybrid solution indicates dynamic quenching. The selectivity of sensing of Au(3+) is attributed to its reduction potential being higher than that of other metal ions and XPS data of GO-PVA1 hybrid with 300 μM Au(3+) substantiate the reduction of Au(3+) to Au(0), because of the transfer of excitons from the hybrid facilitating the selective photoluminescence (PL) quenching.
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Affiliation(s)
- Aniruddha Kundu
- Polymer Science Unit, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India
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Wei S, Lizu M, Zhang X, Sampathi J, Sun L, Milner MF. Electrospun poly(vinyl alcohol)/α-zirconium phosphate nanocomposite fibers. HIGH PERFORM POLYM 2012. [DOI: 10.1177/0954008312454152] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Poly(vinyl alcohol) (PVA)/α-zirconium phosphate (ZrP) polymer nanocomposite (PNC) fibers were successfully prepared by a simple and low-cost electrospinning process. ZrP nanoparticles with two different dimensions, that is, ZrP-500 with a lateral dimension of ∼320 nm and an aspect ratio of ∼500 and ZrP-1500 with a lateral dimension of ∼950 nm and an aspect ratio of ∼1500, were utilized to illustrate the size effect on the electrospun nanofibers. In order to obtain defect-free, uniform PNC fibers, a number of parameters including polymer concentration, feed rate, applied voltage and working distance between the needle tip and the fiber collecting substrate were investigated. Scanning electron microscopic morphological analysis showed smooth and nonwoven electrospun nanofiber mat. Strong intermolecular interactions between the PVA matrix and the included ZrP nanofillers were revealed by the attenuated total reflectance Fourier transform infrared spectroscopy. The incorporation of ZrP nanofillers drastically improved the thermal stability of the PNC fibers. Results of thermogravimetric analysis demonstrated a clear thermal stability dependence on the aspect ratio of the crystalline ZrP nanofillers. The degradation temperature was increased by 90°C for the ZrP-1500 and 60°C for ZrP-500, when the loading level was increased from 1 wt% to 5 wt%. Furthermore, the viscoelastic properties of the PNC solutions were studied by the rheometer. The solutions with higher loading of the nanofiller exhibited higher viscosity and demonstrated different fluid nature when compared with the solutions at lower loading level.
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Affiliation(s)
- Suying Wei
- Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX, USA
| | - Monira Lizu
- Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX, USA
| | - Xi Zhang
- Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX, USA
| | - Jayanthi Sampathi
- Department of Chemistry and Biochemistry, Lamar University, Beaumont, TX, USA
| | - Luyi Sun
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, USA
| | - Matthew F. Milner
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, USA
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Abou-Okeil A, Sheta A, Amr A, Ali MA. Wound dressing based on nonwoven viscose fabrics. Carbohydr Polym 2012; 90:658-66. [DOI: 10.1016/j.carbpol.2012.05.093] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Revised: 05/17/2012] [Accepted: 05/24/2012] [Indexed: 11/16/2022]
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Muskovich M, Bettinger CJ. Biomaterials-based electronics: polymers and interfaces for biology and medicine. Adv Healthc Mater 2012; 1:248-66. [PMID: 23184740 PMCID: PMC3642371 DOI: 10.1002/adhm.201200071] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Indexed: 12/18/2022]
Abstract
Advanced polymeric biomaterials continue to serve as a cornerstone for new medical technologies and therapies. The vast majority of these materials, both natural and synthetic, interact with biological matter in the absence of direct electronic communication. However, biological systems have evolved to synthesize and utilize naturally-derived materials for the generation and modulation of electrical potentials, voltage gradients, and ion flows. Bioelectric phenomena can be translated into potent signaling cues for intra- and inter-cellular communication. These cues can serve as a gateway to link synthetic devices with biological systems. This progress report will provide an update on advances in the application of electronically active biomaterials for use in organic electronics and bio-interfaces. Specific focus will be granted to covering technologies where natural and synthetic biological materials serve as integral components such as thin film electronics, in vitro cell culture models, and implantable medical devices. Future perspectives and emerging challenges will also be highlighted.
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Affiliation(s)
- Meredith Muskovich
- Department of Materials Science & Engineering, 5000 Forbes Avenue, Pittsburgh, PA, 15213
| | - Christopher J. Bettinger
- Department of Biomedical Engineering, Department of Materials Science & Engineering, 5000 Forbes Avenue, Pittsburgh, PA, 15213
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Baker MI, Walsh SP, Schwartz Z, Boyan BD. A review of polyvinyl alcohol and its uses in cartilage and orthopedic applications. J Biomed Mater Res B Appl Biomater 2012; 100:1451-7. [PMID: 22514196 DOI: 10.1002/jbm.b.32694] [Citation(s) in RCA: 536] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 01/20/2012] [Accepted: 01/29/2012] [Indexed: 12/28/2022]
Abstract
Polyvinyl alcohol (PVA) is a synthetic polymer derived from polyvinyl acetate through partial or full hydroxylation. PVA is commonly used in medical devices due to its low protein adsorption characteristics, biocompatibility, high water solubility, and chemical resistance. Some of the most common medical uses of PVA are in soft contact lenses, eye drops, embolization particles, tissue adhesion barriers, and as artificial cartilage and meniscus. The purpose of this review is to evaluate the available published information on PVA with respect to its safety as a medical device implant material for cartilage replacement. The review includes historical clinical use of PVA in orthopedics, and in vitro and in vivo biocompatibility studies. Finally, the safety recommendation involving the further development of PVA cryogels for cartilage replacement is addressed.
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Affiliation(s)
- Maribel I Baker
- Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
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Don TM, Chen CC, Lee CK, Cheng WY, Cheng LP. Preparation and antibacterial test of chitosan/PAA/PEGDA bi-layer composite membranes. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:1503-19. [PMID: 16366335 DOI: 10.1163/156856205774576718] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chitosan/poly(acrylic acid)/poly(ethylene glycol) diacrylate (PEGDA) composite membranes with a bi-layer configuration were prepared and their potential application as an antibacterial material was examined. A two-step process was adopted. A dope consisting of PEGDA, acrylic acid (AA) and a photoinitiator was cast and then UV-cured on a glass substrate to form a mechanically strong, dense membrane. Subsequently, the membrane was coated with a layer of solution composed of chitosan, AA and water. As the majority of AA diffused downwards into the supporting layer underneath, chitosan coagulated with residual AA to form a nano-layer on the top surface by means of UV irradiation. Low-voltage field-emission scanning electron microscopy was used to observe the membrane morphology and to measure the thickness of the top layer. Contact angle measurements indicated a top layer mixed with chitosan and poly(acrylic acid), which was confirmed by chemical composition analysis of X-ray photon spectroscopy. The antibacterial activities of the formed membranes were tested both with respect to a Gram-negative (Escherichia coli) and a Gram-positive (Staphylococcus aureus) bacteria.
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Affiliation(s)
- Trong-Ming Don
- Department of Chemical and Materials Engineering, Tamkang University, Taipei, Taiwan, ROC 25137
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Defrère S, Mestagdt M, Riva R, Krier F, Van Langendonckt A, Drion P, Jérôme C, Evrard B, Dehoux JP, Foidart JM, Donnez J. In vivo biocompatibility of three potential intraperitoneal implants. Macromol Biosci 2011; 11:1336-45. [PMID: 21823236 DOI: 10.1002/mabi.201100077] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 05/26/2011] [Indexed: 11/11/2022]
Abstract
The intraperitoneal biocompatibility of PDMS, polyHEMA and pEVA was investigated in rats, rabbits and rhesus monkeys. No inflammation was evidenced by hematological analyses and measurement of inflammatory markers throughout the experiment and by post-mortem examination of the pelvic cavity. After 3 or 6 months, histological analysis revealed fibrous tissue encapsulating PDMS and PEVA implants in all species and polyHEMA implants in rabbits and monkeys. Calcium deposits were observed inside polyHEMA implants. The intraperitoneal biocompatibility of all 3 polymers makes them suitable for the design of drug delivery systems, which may be of great interest for pathologies confined to the pelvic cavity.
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Affiliation(s)
- Sylvie Defrère
- Université Catholique de Louvain, Institut de Recherche Clinique et Expérimentale, Department of Gynecology, Avenue Hippocrate 10, 1200 Brussels, Belgium
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Nafea EH, Marson A, Poole-Warren LA, Martens PJ. Immunoisolating semi-permeable membranes for cell encapsulation: focus on hydrogels. J Control Release 2011; 154:110-22. [PMID: 21575662 DOI: 10.1016/j.jconrel.2011.04.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Accepted: 04/21/2011] [Indexed: 12/31/2022]
Abstract
Cell-based medicine has recently emerged as a promising cure for patients suffering from various diseases and disorders that cannot be cured/treated using technologies currently available. Encapsulation within semi-permeable membranes offers transplanted cell protection from the surrounding host environment to achieve successful therapeutic function following in vivo implantation. Apart from the immunoisolation requirements, the encapsulating material must allow for cell survival and differentiation while maintaining its physico-mechanical properties throughout the required implantation period. Here we review the progress made in the development of cell encapsulation technologies from the mass transport side, highlighting the essential requirements of materials comprising immunoisolating membranes. The review will focus on hydrogels, the most common polymers used in cell encapsulation, and discuss the advantages of these materials and the challenges faced in the modification of their immunoisolating and permeability characteristics in order to optimize their function.
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Affiliation(s)
- E H Nafea
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney 2052 NSW, Australia
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Subbiah RP, Lee H, Veerapandian M, Sadhasivam S, Seo SW, Yun K. Structural and biological evaluation of a multifunctional SWCNT-AgNPs-DNA/PVA bio-nanofilm. Anal Bioanal Chem 2011; 400:547-60. [DOI: 10.1007/s00216-011-4757-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 02/01/2011] [Accepted: 02/01/2011] [Indexed: 11/29/2022]
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50
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Chhatri A, Bajpai J, Bajpai A, Sandhu S, Jain N, Biswas J. Cryogenic fabrication of savlon loaded macroporous blends of alginate and polyvinyl alcohol (PVA). Swelling, deswelling and antibacterial behaviors. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.08.077] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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