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Eijkel BIM, Apachitei I, Fratila-Apachitei LE, Zadpoor AA. In vitro co-culture models for the assessment of orthopedic antibacterial biomaterials. Front Bioeng Biotechnol 2024; 12:1332771. [PMID: 38375457 PMCID: PMC10875071 DOI: 10.3389/fbioe.2024.1332771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/15/2024] [Indexed: 02/21/2024] Open
Abstract
The antibacterial biofunctionality of bone implants is essential for the prevention and treatment of implant-associated infections (IAI). In vitro co-culture models are utilized to assess this and study bacteria-host cell interactions at the implant interface, aiding our understanding of biomaterial and the immune response against IAI without impeding the peri-implant bone tissue regeneration. This paper reviews existing co-culture models together with their characteristics, results, and clinical relevance. A total of 36 studies were found involving in vitro co-culture models between bacteria and osteogenic or immune cells at the interface with orthopedic antibacterial biomaterials. Most studies (∼67%) involved co-culture models of osteogenic cells and bacteria (osteo-bac), while 33% were co-culture models of immune cells and bacterial cells (im-bac). All models involve direct co-culture of two different cell types. The cell seeding sequence (simultaneous, bacteria-first, and cell-first) was used to mimic clinically relevant conditions and showed the greatest effect on the outcome for both types of co-culture models. The im-bac models are considered more relevant for early peri-implant infections, whereas the osteo-bac models suit late infections. The limitations of the current models and future directions to develop more relevant co-culture models to address specific research questions are also discussed.
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Affiliation(s)
- Benedictus I. M. Eijkel
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology (TU Delft), Delft, Netherlands
| | | | - Lidy E. Fratila-Apachitei
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology (TU Delft), Delft, Netherlands
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Gu Y, Zhang B, Tian J, Li L, He Y. Physiology, quorum sensing, and proteomics of lactic acid bacteria were affected by Saccharomyces cerevisiae YE4. Food Res Int 2023; 166:112612. [PMID: 36914328 DOI: 10.1016/j.foodres.2023.112612] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/11/2023] [Accepted: 02/14/2023] [Indexed: 02/25/2023]
Abstract
The interaction mode between lactic acid bacteria (LAB) and yeast in a fermentation system directly determines the quality of the products, thus understanding their mode of interaction can improve product quality. The present study investigated the effects of Saccharomyces cerevisiae YE4 on LAB from the perspectives of physiology, quorum sensing (QS), and proteomics. The presence of S. cerevisiae YE4 slowed down the growth of Enterococcus faecium 8-3 but had no significant effect on acid production or biofilm formation. S. cerevisiae YE4 significantly reduced the activity of autoinducer-2 at 19 h in E. faecium 8-3 and at 7-13 h in Lactobacillus fermentum 2-1. Expression of the QS-related genes luxS and pfs was also inhibited at 7 h. Moreover, a total of 107 E. faecium 8-3 proteins differed significantly in coculture with S. cerevisiae YE4-these proteins are involved in metabolic pathways including biosynthesis of secondary metabolites; biosynthesis of amino acids; alanine, aspartate, and glutamate metabolism; fatty acid metabolism; and fatty acid biosynthesis. Among them, proteins involved in cell adhesion, cell wall formation, two-component systems, and ABC transporters were detected. Therefore, S. cerevisiae YE4 might affect the physiological metabolism of E. faecium 8-3 by affecting cell adhesion, cell wall formation, and cell-cell interactions.
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Affiliation(s)
- Yue Gu
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Baojun Zhang
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Jianjun Tian
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China
| | - Lijie Li
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China.
| | - Yinfeng He
- College of Food Science and Engineering, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Hohhot, Inner Mongolia 010018, China.
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3
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Sriubas M, Bockute K, Palevicius P, Kaminskas M, Rinkevicius Z, Ragulskis M, Simonyte S, Ruzauskas M, Laukaitis G. Antibacterial Activity of Silver and Gold Particles Formed on Titania Thin Films. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1190. [PMID: 35407308 PMCID: PMC9000426 DOI: 10.3390/nano12071190] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/29/2022] [Accepted: 03/31/2022] [Indexed: 02/07/2023]
Abstract
Metal-based nanoparticles with antimicrobial activity are gaining a lot of attention in recent years due to the increased antibiotics resistance. The development and the pathogenesis of oral diseases are usually associated with the formation of bacteria biofilms on the surfaces; therefore, it is crucial to investigate the materials and their properties that would reduce bacterial attachment and biofilm formation. This work provides a systematic investigation of the physical-chemical properties and the antibacterial activity of TiO2 thin films decorated by Ag and Au nanoparticles (NP) against Veillonella parvula and Neisseria sicca species associated with oral diseases. TiO2 thin films were formed using reactive magnetron sputtering by obtaining as-deposited amorphous and crystalline TiO2 thin films after annealing. Au and Ag NP were formed using a two-step process: magnetron sputtering of thin metal films and solid-state dewetting. The surface properties and crystallographic nature of TiO2/NP structures were investigated by SEM, XPS, XRD, and optical microscopy. It was found that the higher thickness of Au and Ag thin films results in the formation of the enlarged NPs and increased distance between them, influencing the antibacterial activity of the formed structures. TiO2 surface with AgNP exhibited higher antibacterial efficiency than Au nanostructured titania surfaces and effectively reduced the concentration of the bacteria. The process of the observation and identification of the presence of bacteria using the deep learning technique was realized.
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Affiliation(s)
- Mantas Sriubas
- Physics Department, Kaunas University of Technology, Studentu Str. 50, LT-51368 Kaunas, Lithuania; (M.S.); (M.K.); (G.L.)
| | - Kristina Bockute
- Physics Department, Kaunas University of Technology, Studentu Str. 50, LT-51368 Kaunas, Lithuania; (M.S.); (M.K.); (G.L.)
| | - Paulius Palevicius
- Department of Mathematical Modeling, Kaunas University of Technology, Studentu Str. 50, LT-51368 Kaunas, Lithuania; (P.P.); (M.R.)
| | - Marius Kaminskas
- Physics Department, Kaunas University of Technology, Studentu Str. 50, LT-51368 Kaunas, Lithuania; (M.S.); (M.K.); (G.L.)
| | - Zilvinas Rinkevicius
- Division of Theoretical Chemistry & Biology, KTH Royal Institute of Technology, School of Biotechnology, 109 61 Stockholm, Sweden;
| | - Minvydas Ragulskis
- Department of Mathematical Modeling, Kaunas University of Technology, Studentu Str. 50, LT-51368 Kaunas, Lithuania; (P.P.); (M.R.)
| | - Sandrita Simonyte
- Institute of Microbiology and Virology, Faculty of Veterinary Medicine, Veterinary Academy, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, Lithuania; (S.S.); (M.R.)
- Institute of Cardiology, Medical Academy, Lithuanian University of Health Sciences, Sukileliu Ave. 15, LT-50162 Kaunas, Lithuania
| | - Modestas Ruzauskas
- Institute of Microbiology and Virology, Faculty of Veterinary Medicine, Veterinary Academy, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, Lithuania; (S.S.); (M.R.)
- Department of Anatomy and Physiology, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, Lithuania
| | - Giedrius Laukaitis
- Physics Department, Kaunas University of Technology, Studentu Str. 50, LT-51368 Kaunas, Lithuania; (M.S.); (M.K.); (G.L.)
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Bozorgi A, Khazaei M, Soleimani M, Jamalpoor Z. Application of nanoparticles in bone tissue engineering; a review on the molecular mechanisms driving osteogenesis. Biomater Sci 2021; 9:4541-4567. [PMID: 34075945 DOI: 10.1039/d1bm00504a] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The introduction of nanoparticles into bone tissue engineering strategies is beneficial to govern cell fate into osteogenesis and the regeneration of large bone defects. The present study explored the role of nanoparticles to advance osteogenesis with a focus on the cellular and molecular pathways involved. Pubmed, Pubmed Central, Embase, Scopus, and Science Direct databases were explored for those published articles relevant to the involvement of nanoparticles in osteogenic cellular pathways. As multifunctional compounds, nanoparticles contribute to scaffold-free and scaffold-based tissue engineering strategies to progress osteogenesis and bone regeneration. They regulate inflammatory responses and osteo/angio/osteoclastic signaling pathways to generate an osteogenic niche. Besides, nanoparticles interact with biomolecules, enhance their half-life and bioavailability. Nanoparticles are promising candidates to promote osteogenesis. However, the interaction of nanoparticles with the biological milieu is somewhat complicated, and more considerations are recommended on the employment of nanoparticles in clinical applications because of NP-induced toxicities.
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Affiliation(s)
- Azam Bozorgi
- Department of Tissue Engineering, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran and Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mozafar Khazaei
- Department of Tissue Engineering, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran and Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mansoureh Soleimani
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.
| | - Zahra Jamalpoor
- Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran.
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Higgins SG, Becce M, Belessiotis-Richards A, Seong H, Sero JE, Stevens MM. High-Aspect-Ratio Nanostructured Surfaces as Biological Metamaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1903862. [PMID: 31944430 PMCID: PMC7610849 DOI: 10.1002/adma.201903862] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/02/2019] [Indexed: 04/14/2023]
Abstract
Materials patterned with high-aspect-ratio nanostructures have features on similar length scales to cellular components. These surfaces are an extreme topography on the cellular level and have become useful tools for perturbing and sensing the cellular environment. Motivation comes from the ability of high-aspect-ratio nanostructures to deliver cargoes into cells and tissues, access the intracellular environment, and control cell behavior. These structures directly perturb cells' ability to sense and respond to external forces, influencing cell fate, and enabling new mechanistic studies. Through careful design of their nanoscale structure, these systems act as biological metamaterials, eliciting unusual biological responses. While predominantly used to interface eukaryotic cells, there is growing interest in nonanimal and prokaryotic cell interfacing. Both experimental and theoretical studies have attempted to develop a mechanistic understanding for the observed behaviors, predominantly focusing on the cell-nanostructure interface. This review considers how high-aspect-ratio nanostructured surfaces are used to both stimulate and sense biological systems.
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Affiliation(s)
- Stuart G. Higgins
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | | | | | - Hyejeong Seong
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Julia E. Sero
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Molly M. Stevens
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
- Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, UK
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6
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Luan Y, van der Mei HC, Dijk M, Geertsema-Doornbusch GI, Atema-Smit J, Ren Y, Chen H, Busscher HJ. Polarization of Macrophages, Cellular Adhesion, and Spreading on Bacterially Contaminated Gold Nanoparticle-Coatings in Vitro. ACS Biomater Sci Eng 2020; 6:933-945. [PMID: 33464836 DOI: 10.1021/acsbiomaterials.9b01518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Biomaterial-associated infections often arise from contaminating bacteria adhering to an implant surface that are introduced during surgical implantation and not effectively eradicated by antibiotic treatment. Whether or not infection develops from contaminating bacteria depends on an interplay between bacteria contaminating the biomaterial surface and tissue cells trying to integrate the surface with the aid of immune cells. The biomaterial surface plays a crucial role in defining the outcome of this race for the surface. Tissue integration is considered the best protection of a biomaterial implant against infectious bacteria. This paper aims to determine whether and how macrophages aid osteoblasts and human mesenchymal stem cells to adhere and spread over gold nanoparticle (GNP)-coatings with different hydrophilicity and roughness in the absence or presence of contaminating, adhering bacteria. All GNP-coatings had identical chemical surface composition, and water contact angles decreased with increasing roughness. Upon increasing the roughness of the GNP-coatings, the presence of contaminating Staphylococcus epidermidis in biculture with cells gradually decreased surface coverage by adhering and spreading cells, as in the absence of staphylococci. More virulent Staphylococcus aureus fully impeded cellular adhesion and spreading on smooth gold- or GNP-coatings, while Escherichia coli allowed minor cellular interaction. Murine macrophages in monoculture tended toward their pro-inflammatory "fighting" M1-phenotype on all coatings to combat the biomaterial, but in bicultures with contaminating, adhering bacteria, macrophages demonstrated Ym1 expression, indicative of polarization toward their anti-inflammatory "fix-and-repair" M2-phenotype. Damage repair of cells by macrophages improved cellular interactions on intermediately hydrophilic/rough (water contact angle 30 deg/surface roughness 118 nm) GNP-coatings in the presence of contaminating, adhering Gram-positive staphylococci but provided little aid in the presence of Gram-negative E. coli. Thus, the merits on GNP-coatings to influence the race for the surface and prevent biomaterial-associated infection critically depend on their hydrophilicity/roughness and the bacterial strain involved in contaminating the biomaterial surface.
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Affiliation(s)
- Yafei Luan
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China.,University of Groningen, University Medical center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henny C van der Mei
- University of Groningen, University Medical center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Melissa Dijk
- University of Groningen, University Medical center Groningen, Department of Orthodontics, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Gésinda I Geertsema-Doornbusch
- University of Groningen, University Medical center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Jelly Atema-Smit
- University of Groningen, University Medical center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Yijin Ren
- University of Groningen, University Medical center Groningen, Department of Orthodontics, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Hong Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu, P. R. China
| | - Henk J Busscher
- University of Groningen, University Medical center Groningen, Department of Biomedical Engineering, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
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Hulander M, Valen-Rukke H, Sundell G, Andersson M. Influence of Fibrinogen on Staphylococcus epidermidis Adhesion Can Be Reversed by Tuning Surface Nanotopography. ACS Biomater Sci Eng 2019; 5:4323-4330. [DOI: 10.1021/acsbiomaterials.9b00450] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mats Hulander
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
- Nordic Institute of Dental Materials, Sognsveien 70 A, 0855 Oslo, Norway
| | - Håkon Valen-Rukke
- Nordic Institute of Dental Materials, Sognsveien 70 A, 0855 Oslo, Norway
| | - Gustav Sundell
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - Martin Andersson
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
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8
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Luan Y, Liu S, Pihl M, van der Mei HC, Liu J, Hizal F, Choi CH, Chen H, Ren Y, Busscher HJ. Bacterial interactions with nanostructured surfaces. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.10.007] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Trobos M, Juhlin A, Shah FA, Hoffman M, Sahlin H, Dahlin C. In vitro evaluation of barrier function against oral bacteria of dense and expanded polytetrafluoroethylene (PTFE) membranes for guided bone regeneration. Clin Implant Dent Relat Res 2018; 20:738-748. [PMID: 30039909 DOI: 10.1111/cid.12629] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 04/10/2018] [Accepted: 04/17/2018] [Indexed: 12/11/2022]
Abstract
AIM This study evaluates biofilm formation and barrier function against Streptococcus oralis of nonresorbable polytetrafluoroethylene (PTFE) guided bone regeneration membranes having expanded (e-PTFE) and dense (d-PTFE) microstructure. MATERIALS AND METHODS Three e-PTFE membranes of varying openness, one d-PTFE membrane, and commercially pure titanium discs were evaluated. All e-PTFE membranes consisted of PTFE nodes interconnected by fibrils. The d-PTFE membrane was fibril-free, with large evenly spaced indentations. The surfaces were challenged with S. oralis and incubated statically for 2-48h. Bacterial colonization, viability, and penetration were evaluated. RESULTS S. oralis numbers increased over time on all surfaces, as observed using scanning electron microscopy, while cell viability decreased, as measured by colony forming unit (CFU) counting. At 24h and 48h, biofilms on d-PTFE were more mature and thicker (tower formations) than on e-PTFE, where fewer layers of cells were distributed mainly horizontally. Biofilms accumulated preferentially within d-PTFE membrane indentations. At 48h, greater biofilm biomass and number of viable S. oralis were found on d-PTFE compared to e-PTFE membranes. All membranes were impermeable to S. oralis cells. CONCLUSIONS All PTFE membranes were effective barriers against bacterial passage in vitro. However, d-PTFE favored S. oralis biofilm formation.
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Affiliation(s)
- Margarita Trobos
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Annika Juhlin
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Furqan A Shah
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Maria Hoffman
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Herman Sahlin
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden.,Neoss AB, Gothenburg, Sweden
| | - Christer Dahlin
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden.,Department of Oral, Maxillofacial Surgery and Research and Development, NU-Hospital Organization, Trollhättan, Sweden
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Transmission of Monospecies and Dual-Species Biofilms from Smooth to Nanopillared Surfaces. Appl Environ Microbiol 2018; 84:AEM.01035-18. [PMID: 29802194 DOI: 10.1128/aem.01035-18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/22/2018] [Indexed: 11/20/2022] Open
Abstract
The transmission of bacteria in biofilms from donor to receiver surfaces precedes the formation of biofilms in many applications. Biofilm transmission is different from bacterial adhesion, because it involves biofilm compression in between two surfaces, followed by a separation force leading to the detachment of the biofilm from the donor surface and subsequent adhesion to the receiver surface. Therewith, the transmission depends on a balance between donor and receiver surface properties and the cohesiveness of the biofilm itself. Here, we compare bacterial transmission from biofilms of an extracellular-polymeric-substance (EPS)-producing and a non-EPS-producing staphylococcal strain and a dual-species oral biofilm from smooth silicon (Si) donor surfaces to smooth and nanopillared Si receiver surfaces. Biofilms were fully covering the donor surface before transmission. However, after transmission, the biofilms only partly covered the donor and receiver surfaces regardless of nanopillaring, indicating bacterial transmission through adhesive failure at the interface between biofilms and donor surfaces as well as through cohesive failure in the biofilms. The numbers of bacteria per unit volume in EPS-producing staphylococcal biofilms before transmission were 2-fold smaller than in biofilms of the non-EPS-producing strain and of dual species. This difference increased after transmission in the biofilm left behind on the donor surfaces due to an increased bacterial density for the non-EPS-producing strain and a dual-species biofilm. This suggests that biofilms of the non-EPS-producing strain and dual species remained compressed after transmission, while biofilms of the EPS-producing strain were induced to produce more EPS during transmission and relaxed toward their initial state after transmission due to the viscoelasticity conferred to the biofilm by its EPS.IMPORTANCE Bacterial transmission from biofilm-covered surfaces to surfaces is mechanistically different from bacterial adhesion to surfaces and involves detachment from the donor and adhesion to the receiver surfaces under pressure. Bacterial transmission occurs, for instance, in food processing or packaging, in household situations, or between surfaces in hospitals. Patients admitted to a hospital room previously occupied by a patient with antibiotic-resistant pathogens are at elevated infection risk by the same pathogens through transmission. Nanopillared receiver surfaces did not collect less biofilm from a smooth donor than a smooth receiver, likely because the pressure applied during transmission negated the smaller contact area between bacteria and nanopillared surfaces, generally held responsible for reduced adhesion. Biofilm left behind on smooth donor surfaces of a non-extracellular-polymeric-substance (EPS)-producing strain and dual species had undergone different structural changes than an EPS-producing strain, which is important for their possible further treatment by antimicrobials or disinfectants.
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Trobos M, Johansson ML, Jonhede S, Peters H, Hoffman M, Omar O, Thomsen P, Hultcrantz M. The clinical outcome and microbiological profile of bone-anchored hearing systems (BAHS) with different abutment topographies: a prospective pilot study. Eur Arch Otorhinolaryngol 2018; 275:1395-1408. [PMID: 29623410 PMCID: PMC5951894 DOI: 10.1007/s00405-018-4946-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/20/2018] [Indexed: 02/07/2023]
Abstract
Purpose In this prospective clinical pilot study, abutments with different topologies (machined versus polished) were compared with respect to the clinical outcome and the microbiological profile. Furthermore, three different sampling methods (retrieval of abutment, collection of peri-abutment exudate using paper-points, and a small peri-abutment soft-tissue biopsy) were evaluated for the identification and quantification of colonising bacteria. Methods Twelve patients, seven with machined abutment and five with polished abutment, were included in the analysis. Three different sampling procedures were employed for the identification and quantification of colonising bacteria from baseline up to 12 months, using quantitative culturing. Clinical outcome measures (Holgers score, hygiene, pain, numbness and implant stability) were investigated. Results The clinical parameters, and total viable bacteria per abutment or in tissue biopsies did not differ significantly between the polished and machined abutments. The total CFU/mm2 abutment and CFU/peri-abutment fluid space of anaerobes, aerobes and staphylococci were significantly higher for the polished abutment. Anaerobic bacteria were detected in the tissue biopsies before BAHS implantation. Anaerobes and Staphylococcus spp. were detected in all three compartments after BAHS installation. For most patients (10/12), the same staphylococcal species were found in at least two of the three compartments at the same time-point. The common skin coloniser Staphylococcus epidermidis was identified in all patients but one (11/12), whereas the pathogen Staphylococcus aureus was isolated in five of the patients. Several associations between clinical and microbiological parameters were found. Conclusions There was no difference in the clinical outcome with the use of polished versus machined abutment at 3 and 12 months after implantation. The present pilot trial largely confirmed a suitable study design, sampling and analytical methodology to determine the effects of modified BAHS abutment properties. Level of evidence 2. Controlled prospective comparative study. Electronic supplementary material The online version of this article (10.1007/s00405-018-4946-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Margarita Trobos
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, P.O. Box 412, 405 30, Gothenburg, Sweden.
| | - Martin Lars Johansson
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, P.O. Box 412, 405 30, Gothenburg, Sweden
- Oticon Medical AB, Askim, Sweden
| | | | | | - Maria Hoffman
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, P.O. Box 412, 405 30, Gothenburg, Sweden
| | - Omar Omar
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, P.O. Box 412, 405 30, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, P.O. Box 412, 405 30, Gothenburg, Sweden
| | - Malou Hultcrantz
- Department of Otorhinolaryngology, Karolinska University Hospital, Stockholm, Sweden
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Tripathy A, Pahal S, Mudakavi RJ, Raichur AM, Varma MM, Sen P. Impact of Bioinspired Nanotopography on the Antibacterial and Antibiofilm Efficacy of Chitosan. Biomacromolecules 2018; 19:1340-1346. [DOI: 10.1021/acs.biomac.8b00200] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Cao Y, Su B, Chinnaraj S, Jana S, Bowen L, Charlton S, Duan P, Jakubovics NS, Chen J. Nanostructured titanium surfaces exhibit recalcitrance towards Staphylococcus epidermidis biofilm formation. Sci Rep 2018; 8:1071. [PMID: 29348582 PMCID: PMC5773551 DOI: 10.1038/s41598-018-19484-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 12/27/2017] [Indexed: 11/08/2022] Open
Abstract
Titanium-based implants are ubiquitous in the healthcare industries and often suffer from bacterial attachment which results in infections. An innovative method of reducing bacterial growth is to employ nanostructures on implant materials that cause contact-dependent cell death by mechanical rupture of bacterial cell membranes. To achieve this, we synthesized nanostructures with different architectures on titanium surfaces using hydrothermal treatment processes and then examined the growth of Staphylococcus epidermidis on these surfaces. The structure obtained after a two-hour hydrothermal treatment (referred to as spear-type) showed the least bacterial attachment at short times but over a period of 6 days tended to support the formation of thick biofilms. By contrast, the structure obtained after a three-hour hydrothermal treatment (referred to as pocket-type) was found to delay biofilm formation up to 6 days and killed 47% of the initially attached bacteria by penetrating or compressing the bacteria in between the network of intertwined nano-spears. The results point to the efficacy of pocket-type nanostructure in increasing the killing rate of individual bacteria and potentially delaying longer-term biofilm formation.
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Affiliation(s)
- Yunyi Cao
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
| | - Bo Su
- School of Oral and Dental Sciences, University of Bristol, Bristol, BS1 2LY, UK
| | - Subash Chinnaraj
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
| | - Saikat Jana
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
| | - Leon Bowen
- Department of Physics, Durham University, Durham, DH1 3LE, UK
| | - Sam Charlton
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
| | - Pengfei Duan
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK
| | | | - Jinju Chen
- School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK.
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14
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Ren Y, Wang C, Chen Z, Allan E, van der Mei HC, Busscher HJ. Emergent heterogeneous microenvironments in biofilms: substratum surface heterogeneity and bacterial adhesion force-sensing. FEMS Microbiol Rev 2018; 42:259-272. [DOI: 10.1093/femsre/fuy001] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 01/08/2018] [Indexed: 12/18/2022] Open
Affiliation(s)
- Yijin Ren
- Department of Orthodontics, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Can Wang
- Department of Orthodontics, University of Groningen and University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
- School & Hospital of Stomatology, Wuhan University, Wuhan, 430079, Wuhan, China
| | - Zhi Chen
- School & Hospital of Stomatology, Wuhan University, Wuhan, 430079, Wuhan, China
| | - Elaine Allan
- UCL Eastman Dental Institute, University College London, 256 Gray's Inn Road, London WC1X 8LD, UK
| | - Henny C van der Mei
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henk J Busscher
- Department of Biomedical Engineering, University of Groningen and University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
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15
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Dewald C, Lüdecke C, Firkowska-Boden I, Roth M, Bossert J, Jandt KD. Gold nanoparticle contact point density controls microbial adhesion on gold surfaces. Colloids Surf B Biointerfaces 2017; 163:201-208. [PMID: 29304434 DOI: 10.1016/j.colsurfb.2017.12.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/15/2017] [Accepted: 12/19/2017] [Indexed: 11/27/2022]
Abstract
Surface structures in the nanometer range emerge as the next evolutionary breakthrough in the design of biomaterials with antimicrobial properties. However, in order to advance the application of surface nanostructuring strategies in medical implants, the very nature of the microbial repealing mechanism has yet to be understood. Herein, we demonstrate that the random immobilization of gold nanoparticles (AuNPs) on a material's surface generates the possibility to explore microbial adhesion in dependence of contact point densities at the biointerface between the microbe, i.e., Escherichia coli and the material's surface. By optimizing the contact point density defined by individual AuNPs, yet keeping the surface chemistry unchanged as evidenced by X-ray photoelectron spectroscopy, we show that the initial microbial adhesion can be successfully reduced up to 50%, compared to control (unstructured) surfaces. Furthermore, we observed a decrease in the size of microbial cells adhered to nanostructured surfaces. The results show that the spatial distance between the contact points plays a crucial role in regulating microbial adhesion, thus advancing our understanding of the microbial adhesion mechanism on nanostructured surfaces. We suggest that the introduced strategy for nanostructuring materials surfaces opens a research direction for highly microbial-resistant biomaterials.
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Affiliation(s)
- Carolin Dewald
- Chair of Materials Science (CMS), Otto Schott Institute of Materials Research (OSIM), Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743, Jena, Germany; Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI), Bio Pilot Plant, Adolf-Reichwein-Straße 23, 07745, Jena, Germany; Jena School for Microbial Communication (JSMC), Neugasse 23, 07743, Jena, Germany
| | - Claudia Lüdecke
- Chair of Materials Science (CMS), Otto Schott Institute of Materials Research (OSIM), Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743, Jena, Germany; Jena School for Microbial Communication (JSMC), Neugasse 23, 07743, Jena, Germany
| | - Izabela Firkowska-Boden
- Chair of Materials Science (CMS), Otto Schott Institute of Materials Research (OSIM), Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743, Jena, Germany
| | - Martin Roth
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI), Bio Pilot Plant, Adolf-Reichwein-Straße 23, 07745, Jena, Germany; Jena School for Microbial Communication (JSMC), Neugasse 23, 07743, Jena, Germany
| | - Jörg Bossert
- Chair of Materials Science (CMS), Otto Schott Institute of Materials Research (OSIM), Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743, Jena, Germany
| | - Klaus D Jandt
- Chair of Materials Science (CMS), Otto Schott Institute of Materials Research (OSIM), Faculty of Physics and Astronomy, Friedrich Schiller University Jena, Löbdergraben 32, 07743, Jena, Germany; Jena School for Microbial Communication (JSMC), Neugasse 23, 07743, Jena, Germany.
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16
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Physico-chemistry of bacterial transmission versus adhesion. Adv Colloid Interface Sci 2017; 250:15-24. [PMID: 29129313 DOI: 10.1016/j.cis.2017.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/02/2017] [Accepted: 11/03/2017] [Indexed: 12/11/2022]
Abstract
Bacterial adhesion is a main problem in many biomedical, domestic, natural and industrial environments and forms the onset of the formation of a biofilm, in which adhering bacteria grow into a multi-layered film while embedding themselves in a matrix of extracellular polymeric substances. It is usually assumed that bacterial adhesion occurs from air or by convective-diffusion from a liquid suspension, but often bacteria adhere by transmission from a bacterially contaminated donor to a receiver surface. Therewith bacterial transmission is mechanistically different from adhesion, as it involves bacterial detachment from a donor surface followed by adhesion to a receiver one. Transmission is further complicated when the donor surface is not covered with a single layer of adhering bacteria but with a multi-layered biofilm, in which case bacteria can be transmitted either by interfacial failure at the biofilm-donor surface or through cohesive failure in the biofilm. Transmission through cohesive failure in a biofilm is more common than interfacial failure. The aim of this review is to oppose surface thermodynamics and adhesion force analyses, as can both be applied towards bacterial adhesion, with their appropriate extensions towards transmission. Opposition of surface thermodynamics and adhesion force analyses, will allow to distinguish between transmission of bacteria from a donor covered with a (sub)monolayer of adhering bacteria or a multi-layered biofilm. Contact angle measurements required for surface thermodynamic analyses of transmission are of an entirely different nature than analyses of adhesion forces, usually measured through atomic force microscopy. Nevertheless, transmission probabilities based on Weibull analyses of adhesion forces between bacteria and donor and receiver surfaces, correspond with the surface thermodynamic preferences of bacteria for either the donor or receiver surface. Surfaces with low adhesion forces such as polymer-brush coated or nanostructured surfaces are thus preferable for use as non-adhesive receiver surfaces, but at the same time should be avoided for use as a donor surface. Since bacterial transmission occurs under a contact pressure between two surfaces, followed by their separation under tensile or shear pressure and ultimately detachment, this will affect biofilm structure. During the compression phase of transmission, biofilms are compacted into a more dense film. After transmission, and depending on the ability of the bacterial strain involved to produce extracellular polymeric substances, biofilm left-behind on a donor or transmitted to a receiver surface will relax to its original, pre-transmission structure owing to the viscoelasticity of the extracellular polymeric substances matrix, when present. Apart from mechanistic differences between bacterial adhesion and transmission, the low numbers of bacteria generally transmitted require careful selection of suitably sensitive enumeration methods, for which culturing and optical coherence tomography are suggested. Opposing adhesion and transmission as done in this review, not only yields a better understanding of bacterial transmission, but may stimulate researchers to more carefully consider whether an adhesion or transmission model is most appropriate in the specific area of application aimed for, rather than routinely relying on adhesion models.
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Tripathy A, Sreedharan S, Bhaskarla C, Majumdar S, Peneti SK, Nandi D, Sen P. Enhancing the Bactericidal Efficacy of Nanostructured Multifunctional Surface Using an Ultrathin Metal Coating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12569-12579. [PMID: 29017327 DOI: 10.1021/acs.langmuir.7b02291] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Insects and plants exhibit bactericidal behavior through nanostructures, which leads to physical contact killing that does not require antibiotics or chemicals. Also, certain metallic ions (e.g., Ag+ and Cu2+) are well-known to kill bacteria by disrupting their cellular functionalities. The aim of this study is to explore the improvement in bactericidal activity by combining extreme physical structure with surface chemistry. We have fabricated tall (8-9 μm high) nanostructures on silicon surfaces (NSS) having sharp tips (35-110 nm) using a single-step, maskless deep reactive ion etching technique inspired by dragonfly wing. Bactericidal efficacy of the nanostructured surfaces coated with a thin layer of silver (NSS_Ag) or copper (NSS_Cu) was measured quantitatively using standard viability plate-count method and flow cytometry. NSS_Cu surfaces kill bacteria very efficiently (killing 97% within 30 min) when compared to the uncoated NSS. This can be attributed to the addition of a surface chemistry to the nanostructures. The antibacterial activity of NSS_Cu is further indicated by the morphological differences of the dying/dead bacteria observed in the SEM images. The nanostructured surfaces demonstrate excellent superhydrophobic behavior, even with an ultrathin layer of metal (Ag/Cu) coating. The nanostructured surfaces exhibit static contact angle greater than 150° and contact hysteresis less than 10°. Moreover, reflectance is found to be <1% (for NSS_Cu < 0.5%) for all the nanostructured surfaces in the wavelength range 250-800 nm. The results obtained suggest that the fabricated nanostructured surfaces are multifunctional and can be used in various practical applications.
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Affiliation(s)
- Abinash Tripathy
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
| | - Syama Sreedharan
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
| | - Chetana Bhaskarla
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
| | - Shamik Majumdar
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
| | - Sudheer Kumar Peneti
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
| | - Dipankar Nandi
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
| | - Prosenjit Sen
- Centre for Nano Science and Engineering and ‡Department of Biochemistry, Indian Institute of Science , Bangalore 560012, India
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18
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Pihl M, Bruzell E, Andersson M. Bacterial biofilm elimination using gold nanorod localised surface plasmon resonance generated heat. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:54-58. [DOI: 10.1016/j.msec.2017.05.067] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 05/03/2017] [Accepted: 05/13/2017] [Indexed: 01/01/2023]
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19
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Li C, Ye R, Bouckaert J, Zurutuza A, Drider D, Dumych T, Paryzhak S, Vovk V, Bilyy RO, Melinte S, Li M, Boukherroub R, Szunerits S. Flexible Nanoholey Patches for Antibiotic-Free Treatments of Skin Infections. ACS APPLIED MATERIALS & INTERFACES 2017; 9:36665-36674. [PMID: 28956593 DOI: 10.1021/acsami.7b12949] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Despite the availability of different antibiotics, bacterial infections are still one of the leading causes of hospitalization and mortality. The clinical failure of antibiotic treatment is due to a general poor antibiotic penetration to bacterial infection sites as well as the development of antibiotic-resistant pathogens. In the case of skin infection, the wound is covered by exudate, making it impermeable to topical antibiotics. The development of a flexible patch allowing a rapid and highly efficient treatment of subcutaneous wound infections via photothermal irradiation is presented here. The skin patch combines the near-infrared photothermal properties of a gold nanohole array formed by self-assembly of colloidal structures on flexible polyimide films with that of reduced graphene oxide nanosheets for laser-gated pathogen inactivation. In vivo tests performed on mice with subcutaneous skin infection and treated with the photothermal skin patch show wound healing of the infected site, while nontreated areas result in necrotic muscular fibers and bacterial infiltrate. No loss in efficiency is observed upon multiple use of these patches during in vivo experiments because of their robustness.
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Affiliation(s)
- Chengnan Li
- Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR 8520-IEMN, F-59000 Lille, France
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University , Jinan 250061, China
| | - Ran Ye
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain , 1348 Louvain-la-Neuve, Belgium
| | - Julie Bouckaert
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR 8576 du CNRS et Université de Lille, 50 Av. de Halley, 59658 Villeneuve d'Ascq, France
| | - Amaia Zurutuza
- Graphenea S.A., Tolosa Hiribidea 76, 20018 Donostia, San Sebastian, Spain
| | - Djamel Drider
- Institut Charles Viollette, Université de Lille1 , EA 7394 Lille, France
| | - Tetiana Dumych
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Solomiya Paryzhak
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Volodymyr Vovk
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Rostyslav O Bilyy
- Danylo Halytsky Lviv National Medical University , 79010 Lviv, Ukraine
| | - Sorin Melinte
- Institute of Information and Communication Technologies, Electronics and Applied Mathematics, Université catholique de Louvain , 1348 Louvain-la-Neuve, Belgium
| | - Musen Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University , Jinan 250061, China
| | - Rabah Boukherroub
- Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR 8520-IEMN, F-59000 Lille, France
| | - Sabine Szunerits
- Université de Lille, CNRS, Centrale Lille, ISEN, Université de Valenciennes, UMR 8520-IEMN, F-59000 Lille, France
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20
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Svensson S, Trobos M, Omar O, Thomsen P. Site-specific gene expression analysis of implant-near cells in a soft tissue infection model - Application of laser microdissection to study biomaterial-associated infection. J Biomed Mater Res A 2017; 105:2210-2217. [PMID: 28395127 DOI: 10.1002/jbm.a.36088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 03/22/2017] [Accepted: 04/05/2017] [Indexed: 01/10/2023]
Abstract
Analysis of the implant-tissue interface is important for an understanding of the cellular response to biomaterials with different surface characteristics. However, inaccessibility to the site has restricted the detailed evaluation of the tissue surrounding the implant. Laser microdissection enables the isolation of specific cells and tissues for subsequent DNA, RNA, or protein analysis. The present experimental study employed laser microdissection to analyze tissue-specific differences in gene expression in cells around infected or control titanium implants 72 h after subcutaneous implantation in a rat model. Three different tissue zones located 0-800 μm away from the implant-tissue interface were analyzed. Implant sites challenged with a dose of 106 CFU Staphylococcus epidermidis demonstrated higher gene expression of selected markers for inflammation (TNF-α, IL-6), cell recruitment (MCP-1, IL-8, IL-8 R), infection (TLR2), and tissue remodeling (MMP-9) compared with control implants. Furthermore, the gene expression analysis of the three extracted tissue zones revealed marked spatial differences, depending on the distance to the implant. Control implants continuously induced higher cell gene expression in the implant-tissue interface compared with cells 200-800 μm away from the implant, whereas the sites inoculated with S. epidermidis resulted in high gene expression further away from the implant as well. In conclusion, this study demonstrates that laser microdissection is an interesting tool, revealing both gene- and site-specific gene expression patterns in the implant-tissue interface. The technique provides an opportunity for detailed molecular dissection of the biological events related to the implant but occurring at different distances from the implant. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2210-2217, 2017.
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Affiliation(s)
- Sara Svensson
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Margarita Trobos
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Omar Omar
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
| | - Peter Thomsen
- Department of Biomaterials, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Gothenburg, Sweden
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21
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Hizal F, Rungraeng N, Lee J, Jun S, Busscher HJ, van der Mei HC, Choi CH. Nanoengineered Superhydrophobic Surfaces of Aluminum with Extremely Low Bacterial Adhesivity. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12118-12129. [PMID: 28291321 DOI: 10.1021/acsami.7b01322] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bacterial adhesion and biofilm formation on surfaces are troublesome in many industrial processes. Here, nanoporous and nanopillared aluminum surfaces were engineered by anodizing and postetching processes and made hydrophilic (using the inherent oxide layer) or hydrophobic (applying a Teflon coating) with the aim of discouraging bacterial adhesion. Adhesion of Staphylococcus aureus ATCC 12600 (Gram-positive, spherically shaped) and Escherichia coli K-12 (Gram-negative, rod-shaped) was evaluated to the nanoengineered surfaces under both static and flow conditions (fluid shear rate of 37 s-1). Compared to a nonstructured electropolished flat surface, the nanostructured surfaces significantly reduced the number of adhering colony forming units (CFUs) for both species, as measured using agar plating. For the hydrophilic surfaces, this was attributed to a decreased contact area, reducing bacterial adhesion forces on nanoporous and nanopillared surfaces to 4 and 2 nN, respectively, from 8 nN on flat surfaces. Reductions in the numbers of adhering CFUs were more marked on hydrophobic surfaces under flow, amounting to more than 99.9% and 99.4% for S. aureus and E. coli on nanopillared surfaces, respectively. Scanning electron microscopy revealed a few bacteria found on the hydrophobic nanopillared surfaces adhered predominantly to defective or damaged areas, whereas the intact area preserving the original nanopillared morphology was virtually devoid of adhering bacteria. The greater decrease in bacterial adhesion to hydrophobic nanopillared surfaces than to hydrophilic or nanoporous ones is attributed to effective air entrapment in the three-dimensional pillar morphology, rendering them superhydrophobic and slippery, in addition to providing a minimized contact area for bacteria to adhere to.
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Affiliation(s)
- Ferdi Hizal
- Department of Mechanical Engineering, Stevens Institute of Technology , Castle Point on Hudson, Hoboken, New Jersey 07030, United States
- University of Groningen and University Medical Center Groningen , Department of Biomedical Engineering (FB40), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Natthakan Rungraeng
- Food Technology Program, School of Agro-Industry, Mae Fah Luang University , 333 Moo1, Thasud, Muang, Chiang Rai 57100, Thailand
| | - Junghoon Lee
- Department of Mechanical Engineering, Stevens Institute of Technology , Castle Point on Hudson, Hoboken, New Jersey 07030, United States
| | - Soojin Jun
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa , 1955 East West Road, Agricultural Science Building 216, Honolulu, Hawaii 96822, United States
| | - Henk J Busscher
- University of Groningen and University Medical Center Groningen , Department of Biomedical Engineering (FB40), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Henny C van der Mei
- University of Groningen and University Medical Center Groningen , Department of Biomedical Engineering (FB40), Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Chang-Hwan Choi
- Department of Mechanical Engineering, Stevens Institute of Technology , Castle Point on Hudson, Hoboken, New Jersey 07030, United States
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22
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Beltrán-Partida E, Valdez-Salas B, Curiel-Álvarez M, Castillo-Uribe S, Escamilla A, Nedev N. Enhanced antifungal activity by disinfected titanium dioxide nanotubes via reduced nano-adhesion bonds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:59-65. [PMID: 28482568 DOI: 10.1016/j.msec.2017.02.153] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 02/22/2017] [Accepted: 02/25/2017] [Indexed: 11/26/2022]
Abstract
We have provided evidence that the beneficial effect of super-oxidized water (SOW) disinfected Ti6Al4V-TiO2 nanotubes (NTs) can reduce bacterial adhesion and biofilm formation. However, the need of antifungal nanostructured surfaces with osteoactive capabilities is an important goal that has been arising for dental implants (DI) applications. Thus, in the present study we isolated and tested the effects of Candida albicans (C. albicans) on disinfected, wetter and nanoroughness NTs compared to a non-modified control. Moreover, we elucidated part of the fungal adhesion mechanism by studying and relating the mycotic adhesion kinetics and the formation of fungal nanoadhesion bonds among the experimental materials, to gain new insight of the fungal-material-interface. Similarly, the initial behavior of human alveolar bone osteoblasts (HAOb) was microscopically evaluated. NTs significantly reduced the yeasts adhesion and viability with non-outcomes of biofilm than the non-modified surface. Cross-sectioning of the fungal cells revealed promoted nano-contact bonds with superior fungal spread on the control alloy interface; meanwhile NTs evidenced decreased tendency along time; suggesting, down-regulation by the nanostructured morphology and the SOW treatment. Importantly, the initial performance of HAOb demonstrated strikingly promoted anchorage with effects of filopodia formation and increased vital cell on NTs with SOW. The present study proposes SOW treatment as an active protocol for synthesis and disinfection of NTs with potent antifungal capability, acting in part by the reduction of nano-adhesion bonds at the surface-fungal interface; opening up a novel route for the investigation of mycotic-adhesion processes at the nanoscale for bone implants applications.
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Affiliation(s)
- Ernesto Beltrán-Partida
- Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California, Mexico; Department of Biomaterials, Dental Materials and Tissue Engineering, Faculty of Dentistry Mexicali, Autonomous University of Baja California, Av. Zotoluca and Chinampas St., 21040 Mexicali, Baja California, Mexico.
| | - Benjamín Valdez-Salas
- Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California, Mexico.
| | - Mario Curiel-Álvarez
- Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California, Mexico
| | - Sandra Castillo-Uribe
- Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California, Mexico; Department of Biomaterials, Dental Materials and Tissue Engineering, Faculty of Dentistry Mexicali, Autonomous University of Baja California, Av. Zotoluca and Chinampas St., 21040 Mexicali, Baja California, Mexico
| | - Alan Escamilla
- Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California, Mexico
| | - Nicola Nedev
- Department of Corrosion and Materials, Engineering Institute, Autonomous University of Baja California, Blvd. Benito Juarez and Normal St., 21280 Mexicali, Baja California, Mexico
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23
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Christo SN, Bachhuka A, Diener KR, Mierczynska A, Hayball JD, Vasilev K. The Role of Surface Nanotopography and Chemistry on Primary Neutrophil and Macrophage Cellular Responses. Adv Healthc Mater 2016; 5:956-65. [PMID: 26845244 DOI: 10.1002/adhm.201500845] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Revised: 11/24/2015] [Indexed: 01/26/2023]
Abstract
Synthetic materials employed for enhancing, replacing, or restoring biological functionality may be compromised by the host immune responses that they evoke. Surface modification has attracted substantial attention as a tool to modulate the host response to synthetic materials; however, how surface nanotopography combined with chemistry affects immune effector cell responses is still poorly understood. To address this open question, a unique set of model surfaces with controlled surface nanotopography in the range of 16, 38, and 68 nm has been generated. Tailored outermost surface chemistry that was amine, carboxyl, or methyl group rich has been provided. The combinations of these properties yield 12 surface types that are subject to functional assays assessing key immune effector cells, namely, primary neutrophil and macrophage responses in vitro. The data demonstrate that surface nanotopography leads to enhanced matrix metalloproteinase-9 production from primary neutrophils, and a decrease in pro-inflammatory cytokine secretion from primary macrophages. Together, these results are the first to directly compare the immunomodulatory effects of the cooperative interplay between surface nanotopography and chemistry.
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Affiliation(s)
- Susan N. Christo
- Experimental Therapeutics Laboratory; Sansom Institute and Hanson Institute; School of Pharmacy and Medical Science; University of South Australia; Adelaide SA 5000 Australia
| | - Akash Bachhuka
- Mawson Institute; University of South Australia; Adelaide SA 5095 Australia
| | - Kerrilyn R. Diener
- Experimental Therapeutics Laboratory; Sansom Institute and Hanson Institute; School of Pharmacy and Medical Science; University of South Australia; Adelaide SA 5000 Australia
- Research Institute; School of Paediatrics and Reproductive Health; University of Adelaide; Adelaide SA 5005 Australia
- Robinson Research Institute; Discipline of Obstetrics and Gynecology; School of Medicine; University of Adelaide; SA 5005 Australia
| | | | - John D. Hayball
- Experimental Therapeutics Laboratory; Sansom Institute and Hanson Institute; School of Pharmacy and Medical Science; University of South Australia; Adelaide SA 5000 Australia
- Research Institute; School of Paediatrics and Reproductive Health; University of Adelaide; Adelaide SA 5005 Australia
- Robinson Research Institute; Discipline of Obstetrics and Gynecology; School of Medicine; University of Adelaide; SA 5005 Australia
- School of Medicine; University of Adelaide; Adelaide SA 5005 Australia
| | - Krasimir Vasilev
- Mawson Institute; University of South Australia; Adelaide SA 5095 Australia
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24
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Atefyekta S, Ercan B, Karlsson J, Taylor E, Chung S, Webster TJ, Andersson M. Antimicrobial performance of mesoporous titania thin films: role of pore size, hydrophobicity, and antibiotic release. Int J Nanomedicine 2016; 11:977-90. [PMID: 27022263 PMCID: PMC4790524 DOI: 10.2147/ijn.s95375] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Implant-associated infections are undesirable complications that might arise after implant surgery. If the infection is not prevented, it can lead to tremendous cost, trauma, and even life threatening conditions for the patient. Development of an implant coating loaded with antimicrobial substances would be an effective way to improve the success rate of implants. In this study, the in vitro efficacy of mesoporous titania thin films used as a novel antimicrobial release coating was evaluated. Mesoporous titania thin films with pore diameters of 4, 6, and 7 nm were synthesized using the evaporation-induced self-assembly method. The films were characterized and loaded with antimicrobial agents, including vancomycin, gentamicin, and daptomycin. Staphylococcus aureus and Pseudomonas aeruginosa were used to evaluate their effectiveness toward inhibiting bacterial colonization. Drug loading and delivery were studied using a quartz crystal microbalance with dissipation monitoring, which showed successful loading and release of the antibiotics from the surfaces. Results from counting bacterial colony-forming units showed reduced bacterial adhesion on the drug-loaded films. Interestingly, the presence of the pores alone had a desired effect on bacterial colonization, which can be attributed to the documented nanotopographical effect. In summary, this study provides significant promise for the use of mesoporous titania thin films for reducing implant infections.
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Affiliation(s)
- Saba Atefyekta
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Batur Ercan
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA; Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara, Turkey
| | - Johan Karlsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Erik Taylor
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Stanley Chung
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Thomas J Webster
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden; Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden
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25
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Aguayo S, Strange A, Gadegaard N, Dalby MJ, Bozec L. Influence of biomaterial nanotopography on the adhesive and elastic properties of Staphylococcus aureus cells. RSC Adv 2016. [DOI: 10.1039/c6ra12504b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Despite the well-known beneficial effects of biomaterial nanopatterning on host tissue integration, the influence of controlled nanoscale topography on bacterial colonisation and infection remains unknown.
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Affiliation(s)
- S. Aguayo
- Department of Biomaterials and Tissue Engineering
- UCL Eastman Dental Institute
- University College London
- London
- WC1X 8LD – UK
| | - A. Strange
- Department of Biomaterials and Tissue Engineering
- UCL Eastman Dental Institute
- University College London
- London
- WC1X 8LD – UK
| | - N. Gadegaard
- Division of Biomedical Engineering
- School of Engineering
- University of Glasgow
- UK
| | - M. J. Dalby
- Centre for Cell Engineering
- Institute of Molecular, Cell and Systems Biology
- University of Glasgow
- UK
| | - L. Bozec
- Department of Biomaterials and Tissue Engineering
- UCL Eastman Dental Institute
- University College London
- London
- WC1X 8LD – UK
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26
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Malheiro V, Lehner F, Dinca V, Hoffmann P, Maniura-Weber K. Convex and concave micro-structured silicone controls the shape, but not the polarization state of human macrophages. Biomater Sci 2016; 4:1562-1573. [DOI: 10.1039/c6bm00425c] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The typical foreign body response (FBR) to synthetic implants is characterized by local inflammation and tissue fibrosis.
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Affiliation(s)
- V. Malheiro
- Biointerfaces
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- St. Gallen
- Switzerland
| | - F. Lehner
- Biointerfaces
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- St. Gallen
- Switzerland
| | - V. Dinca
- Advanced Materials Processing
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Thun
- Switzerland
| | - P. Hoffmann
- Advanced Materials Processing
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- Thun
- Switzerland
| | - K. Maniura-Weber
- Biointerfaces
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- St. Gallen
- Switzerland
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27
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Aguayo S, Donos N, Spratt D, Bozec L. Single-bacterium nanomechanics in biomedicine: unravelling the dynamics of bacterial cells. NANOTECHNOLOGY 2015; 26:062001. [PMID: 25598514 DOI: 10.1088/0957-4484/26/6/062001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The use of the atomic force microscope (AFM) in microbiology has progressed significantly throughout the years since its first application as a high-resolution imaging instrument. Modern AFM setups are capable of characterizing the nanomechanical behaviour of bacterial cells at both the cellular and molecular levels, where elastic properties and adhesion forces of single bacterium cells can be examined under different experimental conditions. Considering that bacterial and biofilm-mediated infections continue to challenge the biomedical field, it is important to understand the biophysical events leading towards bacterial adhesion and colonization on both biological and non-biological substrates. The purpose of this review is to present the latest findings concerning the field of single-bacterium nanomechanics, and discuss future trends and applications of nanoindentation and single-cell force spectroscopy techniques in biomedicine.
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Affiliation(s)
- S Aguayo
- Department of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, University College London, London, UK
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28
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Svensson S, Trobos M, Hoffman M, Norlindh B, Petronis S, Lausmaa J, Suska F, Thomsen P. A novel soft tissue model for biomaterial-associated infection and inflammation - bacteriological, morphological and molecular observations. Biomaterials 2014; 41:106-21. [PMID: 25522970 DOI: 10.1016/j.biomaterials.2014.11.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/05/2014] [Accepted: 11/08/2014] [Indexed: 12/19/2022]
Abstract
Infection constitutes a major risk for implant failure, but the reasons why biomaterial sites are more vulnerable than normal tissue are not fully elucidated. In this study, a soft tissue infection model was developed, allowing the analysis of cellular and molecular responses in each of the sub-compartments of the implant-tissue interface (on the implant surface, in the surrounding exudate and in the tissue). Smooth and nanostructured titanium disks with or without noble metal chemistry (silver, gold, palladium), and sham sites, were inoculated with Staphylococcus epidermidis and analysed with respect to number of viable bacteria, number, viability and gene expression of host cells, and using different morphological techniques after 4 h, 24 h and 72 h. Non-infected rats were controls. Results showed a transient inflammatory response at control sites, whereas bacterial administration resulted in higher recruitment of inflammatory cells (mainly polymorphonuclear), higher, continuous cell death and higher gene expression of tumour necrosis factor-alpha, interleukin-6, interleukin-8, Toll-like receptor 2 and elastase. At all time points, S. epidermidis was predominantly located in the interface zone, extra- and intracellularly, and lower levels were detected on the implants compared with surrounding exudate. This model allows detailed analysis of early events in inflammation and infection associated to biomaterials in vivo leading to insights into host defence mechanisms in biomaterial-associated infections.
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Affiliation(s)
- Sara Svensson
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Box 412, 405 30 Gothenburg, Sweden
| | - Margarita Trobos
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Box 412, 405 30 Gothenburg, Sweden
| | - Maria Hoffman
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Box 412, 405 30 Gothenburg, Sweden
| | - Birgitta Norlindh
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Box 412, 405 30 Gothenburg, Sweden
| | - Sarunas Petronis
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; SP Technical Research Institute of Sweden, Box 857, 501 15 Borås, Sweden
| | - Jukka Lausmaa
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; SP Technical Research Institute of Sweden, Box 857, 501 15 Borås, Sweden
| | - Felicia Suska
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Box 412, 405 30 Gothenburg, Sweden
| | - Peter Thomsen
- BIOMATCELL VINN Excellence Center of Biomaterials and Cell Therapy, Box 412, 405 30 Gothenburg, Sweden; Department of Biomaterials, Sahlgrenska Academy at University of Gothenburg, Box 412, 405 30 Gothenburg, Sweden.
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