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Sanyal A, Ghosh A, Roy C, Mazumder I, Marrazzo P. Revolutionizing the Use of Honeybee Products in Healthcare: A Focused Review on Using Bee Pollen as a Potential Adjunct Material for Biomaterial Functionalization. J Funct Biomater 2023; 14:352. [PMID: 37504847 PMCID: PMC10381877 DOI: 10.3390/jfb14070352] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/23/2023] [Accepted: 07/02/2023] [Indexed: 07/29/2023] Open
Abstract
The field of biomedical engineering highly demands technological improvements to allow the successful engraftment of biomaterials requested for healing damaged host tissues, tissue regeneration, and drug delivery. Polymeric materials, particularly natural polymers, are one of the primary suitable materials employed and functionalized to enhance their biocompatibility and thus confer advantageous features after graft implantation. Incorporating bioactive substances from nature is a good technique for expanding or increasing the functionality of biomaterial scaffolds, which may additionally encourage tissue healing. Our ecosystem provides natural resources, like honeybee products, comprising a rich blend of phytochemicals with interesting bioactive properties, which, when functionally coupled with biomedical biomaterials, result in the biomaterial exhibiting anti-inflammatory, antimicrobial, and antioxidant effects. Bee pollen is a sustainable product recently discovered as a new functionalizing agent for biomaterials. This review aims to articulate the general idea of using honeybee products for biomaterial engineering, mainly focusing on describing recent literature on experimental studies on biomaterials functionalized with bee pollen. We have also described the underlying mechanism of the bioactive attributes of bee pollen and shared our perspective on how future biomedical research will benefit from the fabrication of such functionalized biomaterials.
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Affiliation(s)
- Arka Sanyal
- School of Biotechnology, KIIT Deemed University, Bhubaneswar 751024, India
| | - Anushikha Ghosh
- School of Biotechnology, KIIT Deemed University, Bhubaneswar 751024, India
| | - Chandrashish Roy
- School of Biotechnology, KIIT Deemed University, Bhubaneswar 751024, India
| | - Ishanee Mazumder
- School of Biotechnology, KIIT Deemed University, Bhubaneswar 751024, India
| | - Pasquale Marrazzo
- Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
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2
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Theus AS, Ning L, Kabboul G, Hwang B, Tomov ML, LaRock CN, Bauser-Heaton H, Mahmoudi M, Serpooshan V. 3D bioprinting of nanoparticle-laden hydrogel scaffolds with enhanced antibacterial and imaging properties. iScience 2022; 25:104947. [PMID: 36065192 PMCID: PMC9440295 DOI: 10.1016/j.isci.2022.104947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/13/2022] [Accepted: 08/11/2022] [Indexed: 11/25/2022] Open
Abstract
Biomaterial-associated microbial contaminations in biologically conducive three-dimensional (3D) tissue-engineered constructs have significantly limited the clinical applications of scaffold systems. To prevent such infections, antimicrobial biomaterials are rapidly evolving. Yet, the use of such materials in bioprinting-based approaches of scaffold fabrication has not been examined. This study introduces a new generation of bacteriostatic gelatin methacryloyl (GelMA)-based bioinks, incorporated with varying doses of antibacterial superparamagnetic iron oxide nanoparticles (SPIONs). The SPION-laden GelMA scaffolds showed significant resistance against the Staphylococcus aureus growth, while providing a contrast in magnetic resonance imaging. We simulated the bacterial contamination of cellular 3D GelMA scaffolds in vitro and demonstrated the significant effect of functionalized scaffolds in inhibiting bacterial growth, while maintaining cell viability and growth. Together, these results present a new promising class of functionalized bioinks to 3D bioprint tissue-engineered scaffold with markedly enhanced properties for the use in a variety of in vitro and clinical applications. Functionalized bioinks with bacteriostatic properties are developed and thoroughly characterized The 200 μg/mL group yielded an optimal balance of printed scaffold properties Incorporating nanoparticle also enabled noninvasive imaging of the bioprinted scaffold
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3
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Zhao W, Libera M, Prysak M, Katz J, De Stefano L. An in vitro model of microbial contamination in the operating room. J Biomed Mater Res B Appl Biomater 2022; 110:2472-2479. [PMID: 35620867 DOI: 10.1002/jbm.b.35104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 04/12/2022] [Accepted: 05/09/2022] [Indexed: 11/08/2022]
Abstract
Infection associated with tissue-contacting biomedical devices is a compelling clinical problem initiated by the microbial colonization of the device surface. Among the possible sources of contaminating bacteria is the operating room (OR) itself, where viable bacteria in the atmosphere can sediment onto a device surface intraoperatively. We have developed an aerosolizing system that can reproducibly spray small quantities of aerosolized bacteria onto a surface to mimic OR contamination. This paper describes the design of the system and characterizes key aspects associated with its operation. The area density of sprayed bacteria is on the order of 102 /cm2 . Using titanium (Ti) alloy coupons as test substrates contaminated by staphylococci, we quantify the fraction of bacteria that are well adhered to the substrate, those that can be removed by sonication, and those that are not recovered after spraying. Despite the relatively low levels of surface contamination, we furthermore show that such a model is able to demonstrate a statistically significant reduction in colonization of Ti coupons modified by antimicrobial quaternary ammonium compounds relative to unmodified controls.
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Affiliation(s)
- Wenhan Zhao
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey, USA
| | - Matthew Libera
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey, USA
| | | | - Jordan Katz
- Orthobond Corporation, Princeton, New Jersey, USA
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4
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Characterization and in vitro analysis of a poly(ε-caprolactone)–gelatin matrix produced by rotary jet spinning and applied as a skin dressing. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04228-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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5
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Improve Integration of In Vitro Biofilm Body of Knowledge to Support Clinical Breakthroughs in Surgical Site Infection. JOURNAL OF THE AMERICAN ACADEMY OF ORTHOPAEDIC SURGEONS GLOBAL RESEARCH AND REVIEWS 2021; 5:01979360-202111000-00002. [PMID: 34748523 PMCID: PMC8575432 DOI: 10.5435/jaaosglobal-d-20-00217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 09/17/2021] [Indexed: 01/28/2023]
Abstract
Prosthetics increase the risk of deep surgical site infections in procedures intended to restore function. In orthopaedics, prosthetic joint infections can lead to repetitive surgeries, amputation, or worse. Biofilm formation both in vitro and in vivo involves stages of attachment, accumulation, and maturation. The level of maturation affects susceptibility to antibiotics, the immune system, and the success of surgical interventions. A review of the literature indicates that orthopedic publications are less likely to mention biofilm. We have reviewed animal models of infection to assess in vivo models of prosthetic infection. Although most prosthetic infections seem to originate from local skin microbiota, clinically representative biofilm inocula are unusual. Biofilm-related end points are more widely adopted, but studies rarely include both quantification of adherent microbial burden and imaging of the in vivo biofilm. Failure to differentiate between planktonic and biofilm infections can skew research away from needed chronic disease models. In this review, we address prosthetic joint infections as an important model for chronic biofilm infection research, identify critical requirements for in vivo models of chronic infection, and propose that resistance to the terminology of biofilm research exists within both research and regulation, which could limit progress toward important orthopaedic targets.
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6
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Chakraborty A, Roy A, Ravi SP, Paul A. Exploiting the role of nanoparticles for use in hydrogel-based bioprinting applications: concept, design, and recent advances. Biomater Sci 2021; 9:6337-6354. [PMID: 34397056 DOI: 10.1039/d1bm00605c] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Three-dimensional (3D) bioprinting is an emerging tissue engineering approach that aims to develop cell or biomolecule-laden, complex polymeric scaffolds with high precision, using hydrogel-based "bioinks". Hydrogels are water-swollen, highly crosslinked polymer networks that are soft, quasi-solid, and can support and protect biological materials. However, traditional hydrogels have weak mechanical properties and cannot retain complex structures. They must be reinforced with physical and chemical manipulations to produce a mechanically resilient bioink. Over the past few years, we have witnessed an increased use of nanoparticles and biological moiety-functionalized nanoparticles to fabricate new bioinks. Nanoparticles of varied size, shape, and surface chemistries can provide a unique solution to this problem primarily because of three reasons: (a) nanoparticles can mechanically reinforce hydrogels through physical and chemical interactions. This can favorably influence the bioink's 3D printability and structural integrity by modulating its rheological, biomechanical, and biochemical properties, allowing greater flexibility to print a wide range of structures; (b) nanoparticles can introduce new bio-functionalities to the hydrogels, which is a key metric of a bioink's performance, influencing both cell-material and cell-cell interactions within the hydrogel; (c) nanoparticles can impart "smart" features to the bioink, making the tissue constructs responsive to external stimuli. Responsiveness of the hydrogel to magnetic field, electric field, pH changes, and near-infrared light can be made possible by the incorporation of nanoparticles. Additionally, bioink polymeric networks with nanoparticles can undergo advanced chemical crosslinking, allowing greater flexibility to print structures with varied biomechanical properties. Taken together, the unique properties of various nanoparticles can help bioprint intricate constructs, bringing the process one step closer to complex tissue structure and organ printing. In this review, we explore the design principles and multifunctional properties of various nanomaterials and nanocomposite hydrogels for potential, primarily extrusion-based bioprinting applications. We illustrate the significance of biocompatibility of the designed nanocomposite hydrogel-based bioink for clinical translation and discuss the different parameters that affect cell fate after cell-nanomaterial interaction. Finally, we critically assess the current challenges of nanoengineering bioinks and provide insight into the future directions of potential hydrogel bioinks in the rapidly evolving field of bioprinting.
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Affiliation(s)
- Aishik Chakraborty
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Avinava Roy
- Metallurgy and Materials Engineering, Indian Institute of Engineering Science and Technology, Shibpur, West Bengal 711103, India
| | - Shruthi Polla Ravi
- School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada
| | - Arghya Paul
- Department of Chemical and Biochemical Engineering, Department of Chemistry, School of Biomedical Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada.
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7
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Ramuta TŽ, Šket T, Starčič Erjavec M, Kreft ME. Antimicrobial Activity of Human Fetal Membranes: From Biological Function to Clinical Use. Front Bioeng Biotechnol 2021; 9:691522. [PMID: 34136474 PMCID: PMC8201995 DOI: 10.3389/fbioe.2021.691522] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/04/2021] [Indexed: 12/12/2022] Open
Abstract
The fetal membranes provide a supportive environment for the growing embryo and later fetus. Due to their versatile properties, the use of fetal membranes in tissue engineering and regenerative medicine is increasing in recent years. Moreover, as microbial infections present a crucial complication in various treatments, their antimicrobial properties are gaining more attention. The antimicrobial peptides (AMPs) are secreted by cells from various perinatal derivatives, including human amnio-chorionic membrane (hACM), human amniotic membrane (hAM), and human chorionic membrane (hCM). By exhibiting antibacterial, antifungal, antiviral, and antiprotozoal activities and immunomodulatory activities, they contribute to ensuring a healthy pregnancy and preventing complications. Several research groups investigated the antimicrobial properties of hACM, hAM, and hCM and their derivatives. These studies advanced basic knowledge of antimicrobial properties of perinatal derivatives and also provided an important insight into the potential of utilizing their antimicrobial properties in a clinical setting. After surveying the studies presenting assays on antimicrobial activity of hACM, hAM, and hCM, we identified several considerations to be taken into account when planning future studies and eventual translation of fetal membranes and their derivatives as antimicrobial agents from bench to bedside. Namely, (1) the standardization of hACM, hAM, and hCM preparation to guarantee rigorous antimicrobial activity, (2) standardization of the antimicrobial susceptibility testing methods to enable comparison of results between various studies, (3) investigation of the antimicrobial properties of fetal membranes and their derivatives in the in vivo setting, and (4) designation of donor criteria that enable the optimal donor selection. By taking these considerations into account, future studies will provide crucial information that will enable reaching the optimal treatment outcomes using the fetal membranes and their derivatives as antimicrobial agents.
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Affiliation(s)
- Taja Železnik Ramuta
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Tina Šket
- Department of Synthetic Biology and Immunology, National Institute of Chemistry, Ljubljana, Slovenia
| | | | - Mateja Erdani Kreft
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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8
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Gliadin-mediated green preparation of hybrid zinc oxide nanospheres with antibacterial activity and low toxicity. Sci Rep 2021; 11:10373. [PMID: 33990672 PMCID: PMC8121786 DOI: 10.1038/s41598-021-89813-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/22/2021] [Indexed: 11/10/2022] Open
Abstract
The development of inorganic antibacterial agents that impart antibacterial properties to biomaterials has attracted wide attention. The paper introduced a kind of hybrid nanosphere antibacterial agent composed of wheat gliadin (WG) and zinc oxide (ZnO), with antibacterial efficacy and low toxicity. The ZnO/WG hybrid nanospheres were environment-friendly integrated by molecular self-assembly co-precipitating and freeze-drying transformation, and were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), atomic absorption spectroscopy (AAS), specific surface and pore size analysis, bacteriostasis test, reactive oxygen species (ROS) determination and safety evaluation. It was found that the prepared hybrid nanospheres were composed of two components, WG and ZnO, with a diameter scope of 100–200 nm; the content of ZnO in the hybrid nanospheres can reach 46.9–70.2% (w/w); the bacteriostasis tests proved that the prepared ZnO/WG nanospheres generating ROS, have a significant inhibitory effect on E. coli and S. aureus; furthermore, the ZnO/WG nanospheres are relatively safe and highly biocompatible in cells and mice. Therefore, the prepared novel ZnO/WG hybrid nanospheres were supposed to apply in the preparation of anti-infective wound dressings, tissue engineering skin scaffold materials, food, and cosmetics preservatives, and so on.
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9
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Xiao X, Zhao W, Liang J, Sauer K, Libera M. Self-defensive antimicrobial biomaterial surfaces. Colloids Surf B Biointerfaces 2020; 192:110989. [PMID: 32361372 PMCID: PMC7308212 DOI: 10.1016/j.colsurfb.2020.110989] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 03/11/2020] [Accepted: 03/23/2020] [Indexed: 01/16/2023]
Abstract
Self-defensive biomaterial surfaces are being developed in order to mitigate infection associated with tissue-contacting biomedical devices. Such infection occurs when microbes colonize the surface of a device and proliferate into a recalcitrant biofilm. A key intervention point centers on preventing the initial colonization. Incorporating antimicrobials within a surface coating can be very effective, but the traditional means of antimicrobial delivery by continuous elution can often be counterproductive. If there is no infection, continuous elution creates conditions that promote the development of resistant microbes throughout the patient. In contrast, a self-defensive coating releases antimicrobial only when and only where there is a microbial challenge to the surface. Otherwise, the antimicrobial remains sequestered within the coating and does not contribute to the development of resistance. A self-defensive surface requires a local trigger that signals the microbial challenge. Three such triggers have been identified as: (1) local pH lowering; (2) local enzyme release; and (3) direct microbial-surface contact. This short review highlights the need for self-defensive surfaces in the general context of the device-infection problem and then reviews key biomaterials developments associated with each of these three triggering mechanisms.
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Affiliation(s)
- Xixi Xiao
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA
| | - Wenhan Zhao
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA
| | - Jing Liang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA
| | - Karin Sauer
- Binghamton Biofilm Research Center (BBRC), Binghamton University Binghamton, NY USA
| | - Matthew Libera
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ, USA.
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10
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Dong JJ, Muszanska A, Xiang F, Falkenberg R, van de Belt-Gritter B, Loontjens T. Contact Killing of Gram-Positive and Gram-Negative Bacteria on PDMS Provided with Immobilized Hyperbranched Antibacterial Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:14108-14116. [PMID: 31568724 PMCID: PMC6822135 DOI: 10.1021/acs.langmuir.9b02549] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/20/2019] [Indexed: 05/19/2023]
Abstract
Here we describe in detail the preparation and application of antibacterial coatings on PDMS (poly(dimethylsiloxane)) and the contact-killing properties with 10 bacterial strains. Our aim was to develop a generally applicable coating to prevent biomaterial acquired infections, which is the major mode of failure of biomedical implants. In the first step, the surface was provided with a hydrophobic hyperbranched coating resin that was covalently attached to PDMS, mediated by an appropriate coupling agent. The coupling agent contained a siloxane group that reacts covalently with the silanol groups of air-plasma-treated PDMS and a blocked isocyanate enabling covalent coupling with the amino groups of the hyperbranched coating resins. The coating resins were functionalized with a polyethylenimine and subsequently quaternized with bromohexane and iodomethane. The coatings were highly effective against Gram-positive bacteria (five strains) and sufficiently active against Gram-negative bacteria (five stains). The killing effect on the latter group was strongly enhanced by adding a permeabilizer (EDTA). The biocidal efficacy was not influenced by the presence of (saliva) proteins.
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Affiliation(s)
- Jia Jia Dong
- Department
of Polymer Chemistry, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Agnieszka Muszanska
- Department
of Biomedical Engineering, University of
Groningen and University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Fei Xiang
- Department
of Polymer Chemistry, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | | | - Betsy van de Belt-Gritter
- Department
of Biomedical Engineering, University of
Groningen and University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Ton Loontjens
- Department
of Polymer Chemistry, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- E-mail:
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11
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Liang J, Wang H, Libera M. Biomaterial surfaces self-defensive against bacteria by contact transfer of antimicrobials. Biomaterials 2019; 204:25-35. [PMID: 30875516 PMCID: PMC10755758 DOI: 10.1016/j.biomaterials.2019.03.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/04/2019] [Accepted: 03/07/2019] [Indexed: 11/17/2022]
Abstract
Despite extensive engineering of tissue-contacting biomedical devices to control healing, these devices remain susceptible to bacterial colonization, biofilm formation, and chronic infection. The threat of selecting for resistance genes largely precludes sustained antimicrobial elution as a wide-spread clinical solution. In response, self-defensive surfaces have been developed where antimicrobial is released only when and where there is a bacterial challenge. We explore a new self-defensive approach using anionic microgels into which small-molecule cationic antimicrobials are loaded by complexation. We identify conditions where antimicrobial remains sequestered within the microgels for periods as long as weeks. However, bacterial contact triggers release and leads to local bacterial killing. We speculate that the close proximity of bacteria alters the local thermodynamic environment and interferes with the microgel-antimicrobial complexation. The contact-transfer approach does not require bacterial metabolism but instead appears to be driven by differences between the microgels and the bacterial cell envelope where there is a high concentration of negative charge and hydrophobicity. Contact with metabolizing macrophages or osteoblasts is, however, insufficient to trigger antimicrobial release, indicating that contact transfer can be specific to bacteria and suggesting an avenue to biomedical device surfaces that can simultaneously promote healing and resist infection.
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Affiliation(s)
- Jing Liang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey, 07030, USA
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Matthew Libera
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey, 07030, USA.
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12
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Yapor JP, Neufeld BH, Tapia JB, Reynolds MM. Biodegradable crosslinked polyesters derived from thiomalic acid and S-nitrosothiol analogues for nitric oxide release. J Mater Chem B 2018; 6:4071-4081. [PMID: 31372219 PMCID: PMC6675467 DOI: 10.1039/c8tb00566d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Crosslinked polyesters with Young's moduli similar to that of certain soft biological tissues were prepared via bulk polycondensation of thiomalic acid and 1,8-octanediol alone, and with citric or maleic acid. The copolymers were converted to nitric oxide (NO)-releasing S-nitrosothiol (RSNO) analogues by reaction with tert-butyl nitrite. Additional conjugation steps were avoided by inclusion of the thiolated monomer during the polycondensation to permit thiol conversion to RSNOs. NO release at physiological pH and temperature (pH 7.4, 37 °C) was determined by chemiluminescence-based NO detection. The average total NO content for poly(thiomalic-co-maleic acid-co-1,8-octanediol), poly(thiomalic-co-citric acid-co-1,8-octanediol), and poly(thiomalic acid-co-1,8-octanediol) was 130 ± 39 μmol g-1, 200 ± 35 μmol g-1, and 130 ± 11 μmol g-1, respectively. The antibacterial properties of the S-nitrosated analogues were confirmed against Escherichia coli and Staphylococcus aureus. The hydrolytic degradation products were analyzed by time-of-flight mass spectrometry after a 10-week study to investigate their composition. Tensile mechanical tests were performed on the non-nitrosated polymers as well as their S-nitrosated derivatives and suggested that the materials have appropriate Young's moduli and elongation values for biomedical applications.
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Affiliation(s)
- Janet P. Yapor
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Bella H. Neufeld
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Jesus B. Tapia
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Melissa M. Reynolds
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
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13
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Asri RIM, Harun WSW, Samykano M, Lah NAC, Ghani SAC, Tarlochan F, Raza MR. Corrosion and surface modification on biocompatible metals: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1261-1274. [PMID: 28532004 DOI: 10.1016/j.msec.2017.04.102] [Citation(s) in RCA: 189] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/18/2017] [Indexed: 12/12/2022]
Abstract
Corrosion prevention in biomaterials has become crucial particularly to overcome inflammation and allergic reactions caused by the biomaterials' implants towards the human body. When these metal implants contacted with fluidic environments such as bloodstream and tissue of the body, most of them became mutually highly antagonistic and subsequently promotes corrosion. Biocompatible implants are typically made up of metallic, ceramic, composite and polymers. The present paper specifically focuses on biocompatible metals which favorably used as implants such as 316L stainless steel, cobalt-chromium-molybdenum, pure titanium and titanium-based alloys. This article also takes a close look at the effect of corrosion towards the implant and human body and the mechanism to improve it. Due to this corrosion delinquent, several surface modification techniques have been used to improve the corrosion behavior of biocompatible metals such as deposition of the coating, development of passivation oxide layer and ion beam surface modification. Apart from that, surface texturing methods such as plasma spraying, chemical etching, blasting, electropolishing, and laser treatment which used to improve corrosion behavior are also discussed in detail. Introduction of surface modifications to biocompatible metals is considered as a "best solution" so far to enhanced corrosion resistance performance; besides achieving superior biocompatibility and promoting osseointegration of biocompatible metals and alloys.
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Affiliation(s)
- R I M Asri
- Institute of Postgraduate Studies, Universiti Malaysia Pahang, Lebuhraya Tun Razak, Gambang, 26300 Kuantan, Pahang, Malaysia
| | - W S W Harun
- Green Research for Advanced Materials Laboratory, Human Engineering Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia.
| | - M Samykano
- Structural and Material Degradation Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
| | - N A C Lah
- Structural and Material Degradation Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
| | - S A C Ghani
- Green Research for Advanced Materials Laboratory, Human Engineering Group, Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
| | - F Tarlochan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha, Qatar
| | - M R Raza
- Department of Mechanical Engineering, COMSATS Institute of Information Technology, Sahiwal 57000, Pakistan
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14
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Lim PN, Wang Z, Chang L, Konishi T, Choong C, Ho B, Thian ES. A multi-material coating containing chemically-modified apatites for combined enhanced bioactivity and reduced infection via a drop-on-demand micro-dispensing technique. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:3. [PMID: 27878735 DOI: 10.1007/s10856-016-5812-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/08/2016] [Indexed: 06/06/2023]
Abstract
Prevention of infection and enhanced osseointegration are closely related, and required for a successful orthopaedic implant, which necessitate implant designs to consider both criteria in tandem. A multi-material coating containing 1:1 ratio of silicon-substituted hydroxyapatite and silver-substituted hydroxyapatite as the top functional layer, and hydroxyapatite as the base layer, was produced via the drop-on-demand micro-dispensing technique, as a strategic approach in the fight against infection along with the promotion of bone tissue regeneration. The homogeneous distribution of silicon-substituted hydroxyapatite and silver-substituted hydroxyapatite micro-droplets at alternate position in silicon-substituted hydroxyapatite-silver-substituted hydroxyapatite/hydroxyapatite coating delayed the exponential growth of Staphylococcus aureus for up to 24 h, and gave rise to up-regulated expression of alkaline phosphatase activity, type I collagen and osteocalcin as compared to hydroxyapatite and silver-substituted hydroxyapatite coatings. Despite containing reduced amounts of silicon-substituted hydroxyapatite and silver-substituted hydroxyapatite micro-droplets over the coated area than silicon-substituted hydroxyapatite and silver-substituted hydroxyapatite coatings, silicon-substituted hydroxyapatite-silver-substituted hydroxyapatite/hydroxyapatite coating exhibited effective antibacterial property with enhanced bioactivity. By exhibiting good controllability of distributing silicon-substituted hydroxyapatite, silver-substituted hydroxyapatite and hydroxyapatite micro-droplets, it was demonstrated that drop-on-demand micro-dispensing technique was capable in harnessing the advantages of silver-substituted hydroxyapatite, silicon-substituted hydroxyapatite and hydroxyapatite to produce a multi-material coating along with enhanced bioactivity and reduced infection.
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Affiliation(s)
- Poon Nian Lim
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117 576, Singapore
| | - Zuyong Wang
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117 576, Singapore
| | - Lei Chang
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117 576, Singapore
| | - Toshiisa Konishi
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117 576, Singapore
- Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
| | - Cleo Choong
- School of Materials Science and Engineering, Nanyang Technology University, 50 Nanyang Avenue, Singapore, 639 798, Singapore
| | - Bow Ho
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, Singapore, 119 757, Singapore
| | - Eng San Thian
- Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117 576, Singapore.
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15
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Shayesteh Moghaddam N, Taheri Andani M, Amerinatanzi A, Haberland C, Huff S, Miller M, Elahinia M, Dean D. Metals for bone implants: safety, design, and efficacy. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s40898-016-0001-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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16
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Repanas A, Andriopoulou S, Glasmacher B. The significance of electrospinning as a method to create fibrous scaffolds for biomedical engineering and drug delivery applications. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.12.007] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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17
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Tenogenic differentiation of mesenchymal stem cells and noncoding RNA: From bench to bedside. Exp Cell Res 2015; 341:237-42. [PMID: 26724570 DOI: 10.1016/j.yexcr.2015.12.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 12/21/2015] [Accepted: 12/23/2015] [Indexed: 11/21/2022]
Abstract
Tendon is a critical unit of musculoskeletal system that connects muscle to bone to control bone movement. More population participate in physical activities, tendon injuries, such as acute tendon rupture and tendinopathy due to overuse, are common causing unbearable pain and disability. However, the process of tendon development and the pathogenesis of tendinopathy are not well defined, limiting the development of clinical therapy for tendon injuries. Studying the tendon differentiation control pathways may help to develop novel therapeutic strategies. This review summarized the novel molecular and cellular events in tendon development and highlighted the clinical application potential of non-coding RNAs and tendon-derived stem cells in gene and cell therapy for tendon injuries, which may bring insights into research and new therapy for tendon disorders.
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18
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Yildirimer L, Seifalian AM. Sterilization-Induced Changes in Surface Topography of Biodegradable POSS-PCLU and the Cellular Response of Human Dermal Fibroblasts. Tissue Eng Part C Methods 2015; 21:614-30. [DOI: 10.1089/ten.tec.2014.0270] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Lara Yildirimer
- Division of Surgery & Interventional Science, UCL Centre for Nanotechnology & Regenerative Medicine, University College London, London, United Kingdom
| | - Alexander M. Seifalian
- Division of Surgery & Interventional Science, UCL Centre for Nanotechnology & Regenerative Medicine, University College London, London, United Kingdom
- Royal Free London NHS Foundation Trust Hospital, London, United Kingdom
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19
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Peng Z, Ao H, Wang L, Guo S, Tang T. Quaternised chitosan coating on titanium provides a self-protective surface that prevents bacterial colonisation and implant-associated infections. RSC Adv 2015. [DOI: 10.1039/c5ra07540h] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Ti rod-treated group showed radiographic signs of osseous destruction, osteolytic lesions and consecutive deformity after 14 days, while the HTi rod-treated group were free of radiographic signs of infection.
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Affiliation(s)
- Zhaoxiang Peng
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200011
| | - Haiyong Ao
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200011
| | - Ling Wang
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Shengrong Guo
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Tingting Tang
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai 200011
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20
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Scaffold-based anti-infection strategies in bone repair. Ann Biomed Eng 2014; 43:515-28. [PMID: 25476163 DOI: 10.1007/s10439-014-1205-3] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 11/26/2014] [Indexed: 12/14/2022]
Abstract
Bone fractures and non-union defects often require surgical intervention where biomaterials are used to correct the defect, and approximately 10% of these procedures are compromised by bacterial infection. Currently, treatment options are limited to sustained, high doses of antibiotics and surgical debridement of affected tissue, leaving a significant, unmet need for the development of therapies to combat device-associated biofilm and infections. Engineering implants to prevent infection is a desirable material characteristic. Tissue engineered scaffolds for bone repair provide a means to both regenerate bone and serve as a base for adding antimicrobial agents. Incorporating anti-infection properties into regenerative medicine therapies could improve clinical outcomes and reduce the morbidity and mortality associated with biomaterial implant-associated infections. This review focuses on current animal models and technologies available to assess bone repair in the context of infection, antimicrobial agents to fight infection, the current state of antimicrobial scaffolds, and future directions in the field.
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21
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Busscher HJ, van der Mei HC, Subbiahdoss G, Jutte PC, van den Dungen JJAM, Zaat SAJ, Schultz MJ, Grainger DW. Biomaterial-associated infection: locating the finish line in the race for the surface. Sci Transl Med 2013; 4:153rv10. [PMID: 23019658 DOI: 10.1126/scitranslmed.3004528] [Citation(s) in RCA: 445] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Biomaterial-associated infections occur on both permanent implants and temporary devices for restoration or support of human functions. Despite increasing use of biomaterials in an aging society, comparatively few biomaterials have been designed that effectively reduce the incidence of biomaterial-associated infections. This review provides design guidelines for infection-reducing strategies based on the concept that the fate of biomaterial implants or devices is a competition between host tissue cell integration and bacterial colonization at their surfaces.
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Affiliation(s)
- Henk J Busscher
- Department of BioMedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, Netherlands
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22
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Wang Q, Yu X, Libera M. Reducing bacterial colonization of 3-d nanofiber cell scaffolds by hierarchical assembly of microgels and an antimicrobial Peptide. Adv Healthc Mater 2013. [PMID: 23184519 DOI: 10.1002/adhm.201200306] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The hierarchical electrostatic deposition of anionic microgels and a cationic oligopeptide throughout a PCL-chitosan nanofiber scaffold inhibits S. epidermidis colonization of the scaffold interior while promoting osteoblast adhesion, spreading, and proliferation on the scaffold surface.
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Affiliation(s)
- Qichen Wang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA
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23
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Lau KHA, Ren C, Sileika TS, Park SH, Szleifer I, Messersmith PB. Surface-grafted polysarcosine as a peptoid antifouling polymer brush. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:16099-107. [PMID: 23101930 PMCID: PMC3530414 DOI: 10.1021/la302131n] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Poly(N-substituted glycine) "peptoids" are a class of peptidomimetic molecules receiving significant interest as engineered biomolecules. Sarcosine (i.e., poly(N-methyl glycine)) has the simplest side chain chemical structure of this family. In this Article, we demonstrate that surface-grafted polysarcosine (PSAR) brushes exhibit excellent resistance to nonspecific protein adsorption and cell attachment. Polysarcosine was coupled to a mussel adhesive protein-inspired DOPA-Lys pentapeptide, which enabled solution grafting and control of the surface chain density of the PSAR brushes. Protein adsorption was found to decrease monotonically with increasing grafted chain densities, and protein adsorption could be completely inhibited above certain critical chain densities specific to different polysarcosine chain lengths. The dependence of protein adsorption on chain length and density was also investigated by a molecular theory. PSAR brushes at high chain length and density were shown to resist fibroblast cell attachment over a 7 week period, as well as resist the attachment of some clinically relevant bacterial strains. The excellent antifouling performance of PSAR may be related to the highly hydrophilic character of polysarcosine, which was evident from high-pressure liquid chromatography measurements of polysarcosine and water contact angle measurements of the PSAR brushes. Peptoids have been shown to resist proteolytic degradation, and polysarcosine could be produced in large quantities by N-carboxy anhydride polymerization. In summary, surface-grafted polysarcosine peptoid brushes hold great promise for antifouling applications.
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Affiliation(s)
- King Hang Aaron Lau
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
| | - Chunlai Ren
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Tadas S. Sileika
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
| | - Sung Hyun Park
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
| | - Igal Szleifer
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, Illinois 60208, USA
| | - Phillip B. Messersmith
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
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24
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Tang Y, Zhao Y, Wang H, Gao Y, Liu X, Wang X, Lin T. Layer-by-layer assembly of antibacterial coating on interbonded 3D fibrous scaffolds and its cytocompatibility assessment. J Biomed Mater Res A 2012; 100:2071-8. [PMID: 22581705 DOI: 10.1002/jbm.a.34116] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Accepted: 02/03/2012] [Indexed: 11/09/2022]
Abstract
Bonded fibrous matrices have shown great potential in tissue engineering because of their unique 3D structures and pore characteristics. For some applications, bacterial infections must be taken into account, and antibacterial function is highly desired. In this study, an antibacterial polymer, polyhexamethylene biguanide (PHMB), was applied onto the fiber surface of a bonded poly(ε-caprolactone) (PCL) fibrous matrix with the objective to achieve both strong antibacterial effect and good cell compatibility. The coatings were prepared by using an electrostatic layer-by-layer (LbL) assembly technique, which allowed the control of PHMB loading and coating uniformity on the fiber surface. The PHMB coating provided antibacterial activities, but had no toxicity on mammalian cells. This bonded PCL fibrous matrix with electrostatically self-assembled PHMB may provide a new antiinfective tissue scaffold for various biomedical applications.
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Affiliation(s)
- Yanwei Tang
- Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong, VIC 3217, Victoria, Australia
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25
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Bajpai I, Saha N, Basu B. Moderate intensity static magnetic field has bactericidal effect on E. coli and S. epidermidis on sintered hydroxyapatite. J Biomed Mater Res B Appl Biomater 2012; 100:1206-17. [DOI: 10.1002/jbm.b.32685] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/18/2011] [Accepted: 11/13/2011] [Indexed: 01/18/2023]
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26
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Griffiths S, Maclean M, Anderson JG, MacGregor SJ, Grant MH. Inactivation of microorganisms within collagen gel biomatrices using pulsed electric field treatment. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:507-515. [PMID: 22205133 DOI: 10.1007/s10856-011-4526-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 12/09/2011] [Indexed: 05/31/2023]
Abstract
Pulsed electric field (PEF) treatment was examined as a potential decontamination method for tissue engineering biomatrices by determining the susceptibility of a range of microorganisms whilst within a collagen gel. High intensity pulsed electric fields were applied to collagen gel biomatrices containing either Escherichia coli, Pseudomonas aeruginosa, Staphylococcus epidermidis, Candida albicans, Saccharomyces cerevisiae or the spores of Aspergillus niger. The results established varying degrees of microbial PEF susceptibility. When high initial cell densities (10(6)-10(7) CFU ml(-1)) were PEF treated with 100 pulses at 45 kV cm(-1), the greatest log reduction was achieved with S. cerevisiae (~6.5 log(10) CFU ml(-1)) and the lowest reduction achieved with S. epidermidis (~0.5 log(10) CFU ml(-1)). The results demonstrate that inactivation is influenced by the intrinsic properties of the microorganism treated. Further investigations are required to optimise the microbial inactivation kinetics associated with PEF treatment of collagen gel biomatrices.
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Affiliation(s)
- Sarah Griffiths
- Bioengineering Unit, University of Strathclyde, Wolfson Centre, Glasgow, UK
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27
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Lau KA, Ren C, Park SH, Szleifer I, Messersmith PB. An experimental-theoretical analysis of protein adsorption on peptidomimetic polymer brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2288-98. [PMID: 22107438 PMCID: PMC3269508 DOI: 10.1021/la203905g] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Surface-grafted water-soluble polymer brushes are being intensely investigated for preventing protein adsorption to improve biomedical device function, prevent marine fouling, and enable applications in biosensing and tissue engineering. In this contribution, we present an experimental-theoretical analysis of a peptidomimetic polymer brush system with regard to the critical brush density required for preventing protein adsorption at varying chain lengths. A mussel adhesive-inspired DOPA-Lys (DOPA = 3,4-dihydroxy-phenylalanine; Lys = lysine) pentapeptide surface grafting motif enabled aqueous deposition of our peptidomimetic polypeptoid brushes over a wide range of chain densities. Critical densities of 0.88 nm(-2) for a relatively short polypeptoid 10-mer to 0.42 nm(-2) for a 50-mer were identified from measurements of protein adsorption. The experiments were also compared with the protein adsorption isotherms predicted by a molecular theory. Excellent agreements in terms of both the polymer brush structure and the critical chain density were obtained. Furthermore, atomic force microscopy (AFM) imaging is shown to be useful in verifying the critical brush density for preventing protein adsorption. The present coanalysis of experimental and theoretical results demonstrates the significance of characterizing the critical brush density in evaluating the performance of an antifouling polymer brush system. The high fidelity of the agreement between the experiments and molecular theory also indicate that the theoretical approach presented can aid in the practical design of antifouling polymer brush systems.
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Affiliation(s)
- K.H. Aaron Lau
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
| | - Chunlai Ren
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Sung Hyun Park
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
| | - Igal Szleifer
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, Illinois 60208, USA
| | - Phillip B. Messersmith
- Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, USA
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Evanston, Illinois 60208, USA
- Institute for Bionanotechnology in Medicine, Northwestern University, Evanston, Illinois 60208, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
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28
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Al-Ahmad A, Schubert C, Carvalho C, Thoman Y, Wittmer A, Metzger M, Hellwig E, Swieszkowski W, Wiedmann-Al-Ahmad M. Comparison of bacterial adhesion and cellular proliferation on newly developed three-dimensional scaffolds manufactured by rapid prototyping technology. J Biomed Mater Res A 2011; 98:303-11. [PMID: 21626662 DOI: 10.1002/jbm.a.33118] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 02/07/2011] [Accepted: 03/25/2011] [Indexed: 11/10/2022]
Abstract
Scaffolds used in the field of tissue engineering should facilitate the adherence, spreading, and ingrowth of cells as well as prevent microbial adherence. For the first time, this study simultaneously deals with microbial and tissue cell adhesion to rapid prototyping-produced 3D-scaffolds. The cell growth of human osteosarcoma cells (CAL-72) over a time period of 3-11 days were examined on three scaffolds (PLGA, PLLA, PLLA-TCP) and compared to the adhesion of salivary microorganisms and representative germs of the oral flora (Porphyromonas gingivalis, Prevotella nigrescens, Candida albicans, Enterococcus faecalis, Streptococcus mutans, and Streptococcus sanguinis). Scanning electron microscopy (SEM), cell proliferation measurements, and determination of the colony forming units (CFU) were performed. The cell proliferation rates on PLLA and PLLA-TCP after 3, 7, and 11 days of cultivation were higher than on PLGA. On day 3 the proliferation rates on PLLA and PLLA-TCP, and on day 5 on PLLA-TCP, proved to be significantly higher compared to that of the control (culture plate). The strain which showed the most CFUs on all of the investigated scaffolds was P. gingivalis, followed by E. faecalis. No significant CFU differences were determined examining P. gingivalis among the biomaterials. In contrast, E. faecalis was significantly more adherent to PLGA and PLLA compared to PLLA-TCP. The lowest CFU values were seen with C. albicans and P. nigrescens. Salivary born aerobic and anaerobic microorganisms adhered significantly more to PLGA compared to PLLA-TCP. These results supported by SEM point out the high potential of PLLA-TCP in the field of tissue engineering.
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Affiliation(s)
- A Al-Ahmad
- Department of Operative Dentistry and Periodontology, Albert Ludwigs University, Freiburg, Germany.
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29
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Lee JH, Wang H, Kaplan JB, Lee WY. Microfluidic Approach to Create Three-Dimensional Tissue Models for Biofilm-Related Infection of Orthopaedic Implants. Tissue Eng Part C Methods 2011; 17:39-48. [DOI: 10.1089/ten.tec.2010.0285] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Joung-Hyun Lee
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey
| | - Hongjun Wang
- Department of Chemistry, Chemical Biology and Biomedical Engineering, Stevens Institute of Technology, Hoboken, New Jersey
| | - Jeffrey B. Kaplan
- Department of Oral Biology, New Jersey Dental School, Newark, New Jersey
| | - Woo Y. Lee
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, New Jersey
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30
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Coneski PN, Rao KS, Schoenfisch MH. Degradable nitric oxide-releasing biomaterials via post-polymerization functionalization of cross-linked polyesters. Biomacromolecules 2010; 11:3208-15. [PMID: 20954726 PMCID: PMC3070196 DOI: 10.1021/bm1006823] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of diverse nitric oxide (NO)-releasing network polyesters is described. The melt phase condensation of polyols with a calculated excess of diacid followed by thermal curing generates cross-linked polyesters containing acid end groups. Varying the composition and curing temperatures of the polyesters resulted in materials with tunable thermal and degradation properties. Glass transition temperatures for the synthesized materials range from -25.5 to 3.2 °C, while complete degradation of these polyesters occurs within a minimum of nine weeks under physiological conditions (pH 7.4, 37 °C). Post-polymerization coupling of aminothiols to terminal carboxylic acids generate thiol-containing polyesters, with thermal and degradation characteristics similar to those of the parent polyesters. After nitrosation, these materials are capable of releasing up to 0.81 μmol NO cm(-2) for up to 6 d. The utility of the polyesters as antibacterial biomaterials was indicated by an 80% reduction of Pseudomonas aeruginosa adhesion compared to unmodified controls.
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Affiliation(s)
- Peter N. Coneski
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290
| | - Kavitha S. Rao
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290
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31
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Tarafa PJ, Jiménez A, Zhang J, Matthews MA. Compressed carbon dioxide (CO2) for decontamination of biomaterials and tissue scaffolds. J Supercrit Fluids 2010. [DOI: 10.1016/j.supflu.2010.02.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Shah R, Lewis MP. The Future? Craniofacial Skeletal Muscle Engineering as an Aid for the Management of Craniofacial Deformities. Semin Orthod 2010. [DOI: 10.1053/j.sodo.2010.02.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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33
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Brohede U, Forsgren J, Roos S, Mihranyan A, Engqvist H, Strømme M. Multifunctional implant coatings providing possibilities for fast antibiotics loading with subsequent slow release. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:1859-1867. [PMID: 19399593 DOI: 10.1007/s10856-009-3749-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Accepted: 04/06/2009] [Indexed: 05/27/2023]
Abstract
The possibility to fast-load biomimetic hydroxyapatite coatings on surgical implant with the antibiotics Amoxicillin, Gentamicin sulfate, Tobramycin and Cephalothin has been investigated in order to develop a multifunctional implant device offering sustained local anti-bacterial treatment and giving the surgeon the possibility to choose which antibiotics to incorporate in the implant at the site of surgery. Physical vapor deposition was used to coat titanium surfaces with an adhesion enhancing gradient layer of titanium oxide having an amorphous oxygen poor composition at the interface and a crystalline bioactive anatase TiO(2) composition at the surface. Hydroxyapatite (HA) was biomimetically grown on the bioactive TiO(2) to serve as a combined bone in-growth promoter and drug delivery vehicle. The coating was characterized using scanning and transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The antibiotics were loaded into the HA coatings via soaking and the subsequent release and antibacterial effect were analyzed using UV spectroscopy and examination of inhibition zones in a Staphylococcus aureus containing agar. It was found that a short drug loading time of 15 min ensured antibacterial effects after 24 h for all antibiotics under study. It was further found that the release processes of Cephalothin and Amoxicillin consisted of an initial rapid drug release that varied unpredictably in amount followed by a reproducible and sustained release process with a release rate independent of the drug loading times under study. Thus, implants that have been fast-loaded with drugs could be stored for ~10 min in a simulated body fluid after loading to ensure reproducibility in the subsequent release process. Calculated release rates and measurements of drug amounts remaining in the samples after 22 h of release indicated that a therapeutically relevant dose could be achieved close to the implant surface for about 2 days. Concluding, the present study provides an outline for the development of a fast-loading slow-release surgical implant kit where the implant and the drug are separated when delivered to the surgeon, thus constituting a flexible solution for the surgeon by offering the choice of quick addition of antibiotics to the implant coating based on the patient need.
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Affiliation(s)
- Ulrika Brohede
- Division for Nanotechnology and Functional Materials, Department of Engineering Sciences, The Angström Laboratory, Uppsala University, Box 534, 751 21, Uppsala, Sweden
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34
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Trommelmans L, Selling J, Dierickx K. Informing participants in clinical trials with ex vivo human tissue-engineered products: what to tell and how to tell it? J Tissue Eng Regen Med 2008; 2:236-41. [PMID: 18493918 DOI: 10.1002/term.82] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Ex vivo tissue-engineered products are increasingly entered into clinical trials. To allow prospective participants to make a fully informed, autonomous decision on their participation, we have to adapt the informed consent process by taking the specific aspects of tissue engineering into consideration. New elements in ex vivo tissue engineering are the source and manipulation of the cells in the product, the implantation of the product and the additional risks and benefits due to the construction of the product and its activity in the body. They are the result of the delicate nature of some cell types and of the complexity of the tissue engineering process. The process of informing the participant should be designed in such a way that the participant's capacity to understand the intervention and its implications is enhanced. Crucial issues, such as the aim and procedure of the trial, the risks and benefits involved and the role of the investigator, have to be clarified. We suggest that participants' understanding of the trial can be enhanced through the use of audiovisual material, by developing a simple questionnaire to direct the information process further, and by the assistance of informed third parties to help participants in their decision-making processes.
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Affiliation(s)
- Leen Trommelmans
- Centre for Biomedical Ethics and Law, Kapucijnenvoer 35/3, Leuven, Belgium.
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Nejadnik MR, van der Mei HC, Norde W, Busscher HJ. Bacterial adhesion and growth on a polymer brush-coating. Biomaterials 2008; 29:4117-21. [PMID: 18674814 DOI: 10.1016/j.biomaterials.2008.07.014] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2008] [Accepted: 07/11/2008] [Indexed: 10/21/2022]
Abstract
Biomaterials-related infections pose serious problems in implant surgery, despite the development of non-adhesive coatings. Non-adhesive coatings, like polymer brush-coatings, have so far only been investigated with respect to preventing initial bacterial adhesion, but never with respect to effects on kinetics of bacterial growth. Here, we compare adhesion and 20 h growth of three bacterial strains (Staphylococcus aureus, Staphylococcus epidermidis and Pseudomonas aeruginosa) on pristine and brush-coated silicone rubber in a parallel plate flow chamber. Brush-coatings were made using a tri-block copolymer of polyethylene oxide (PEO) and polypropylene oxide (PPO). Brush-coatings prevented adhesion of staphylococci to below 5 x 10(5)cm(-2) after 30 min, which is a 10-fold reduction compared to pristine silicone rubber. Biofilms grew on both brush-coated and pristine silicone rubber, while the viability of biofilms on brush-coatings was higher than on pristine silicone rubber. However, biofilms on brush-coatings developed more slowly and detached almost fully by high fluid shear. Brush-coating remained non-adhesive after S. epidermidis biofilm formation and subsequent removal whereas a part of its functionality was lost after removal of S. aureus biofilms. Adhesion, growth and detachment of P. aeruginosa were not significantly different on brush-coatings as compared with pristine silicone rubber, although here too the viability of biofilms on brush-coatings was higher. We conclude that polymer brush-coatings strongly reduce initial adhesion of staphylococci and delay their biofilm growth. In addition, biofilms on brush-coatings are more viable and easily removed by the application of fluid shear.
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Affiliation(s)
- M Reza Nejadnik
- Department of Biomedical Engineering, University Medical Center Groningen and University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
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