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Alkildani S, Ren Y, Liu L, Rimashevskiy D, Schnettler R, Radenković M, Najman S, Stojanović S, Jung O, Barbeck M. Analyses of the Cellular Interactions between the Ossification of Collagen-Based Barrier Membranes and the Underlying Bone Defects. Int J Mol Sci 2023; 24:ijms24076833. [PMID: 37047808 PMCID: PMC10095555 DOI: 10.3390/ijms24076833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 03/27/2023] [Accepted: 04/03/2023] [Indexed: 04/09/2023] Open
Abstract
Barrier membranes are an essential tool in guided bone Regeneration (GBR), which have been widely presumed to have a bioactive effect that is beyond their occluding and space maintenance functionalities. A standardized calvaria implantation model was applied for 2, 8, and 16 weeks on Wistar rats to test the interactions between the barrier membrane and the underlying bone defects which were filled with bovine bone substitute materials (BSM). In an effort to understand the barrier membrane’s bioactivity, deeper histochemical analyses, as well as the immunohistochemical detection of macrophage subtypes (M1/M2) and vascular endothelial cells, were conducted and combined with histomorphometric and statistical approaches. The native collagen-based membrane was found to have ossified due to its potentially osteoconductive and osteogenic properties, forming a “bony shield” overlying the bone defects. Histomorphometrical evaluation revealed the resorption of the membranes and their substitution with bone matrix. The numbers of both M1- and M2-macrophages were significantly higher within the membrane compartments compared to the underlying bone defects. Thereby, M2-macrophages significantly dominated the tissue reaction within the membrane compartments. Statistically, a correlation between M2-macropahges and bone regeneration was only found at 2 weeks post implantationem, while the pro-inflammatory limb of the immune response correlated with the two processes at 8 weeks. Altogether, this study elaborates on the increasingly described correlations between barrier membranes and the underlying bone regeneration, which sheds a light on the understanding of the immunomodulatory features of biomaterials.
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Affiliation(s)
| | - Yanru Ren
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Luo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100013, China
| | - Denis Rimashevskiy
- Department of Traumatology and Orthopedics, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Sanja Stojanović
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Mike Barbeck
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
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Kopp A, Fischer H, Soares AP, Schmidt-Bleek K, Leber C, Kreiker H, Duda G, Kröger N, van Gaalen K, Hanken H, Jung O, Smeets R, Heiland M, Rendenbach C. Long-term in vivo observations show biocompatibility and performance of ZX00 magnesium screws surface-modified by plasma-electrolytic oxidation in Göttingen miniature pigs. Acta Biomater 2023; 157:720-733. [PMID: 36460289 DOI: 10.1016/j.actbio.2022.11.052] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022]
Abstract
Bioabsorbable magnesium implants for orthopedic fixation of bone have recently become available for different fields of indication. While general questions of biocompatibility have been answered, tailoring suitable degradation kinetics for specific applications as well as long-term tissue integration remain the focus of current research. The aim of this study was the evaluation of the long-term degradation behavior and osseointegration of Mg-Ca-Zn (ZX00MEO) based magnesium implants with plasma-electrolytic oxidation (PEO) surface modification (ZX00MEO-PEO) in comparison to non-surface modified implants in vivo and in vitro. Besides a general evaluation of the biological performance of the alloy over a prolonged period, the main hypothesis was that PEO surface modification significantly reduces implant degradation rate and improves tissue interaction. In vitro, the microstructure and surface of the bioabsorbable screws were characterized by SEM/EDS, cytocompatibility and degradation testing facilitating hydrogen gas evolution, carried out following ISO 10993-5/-12 and ASTM F3268-18a/ASTM G1-03 (E1:2017). In vivo, screws were implanted in the frontal bone of Minipigs for 6, 12, and 18 months, following radiological and histomorphometric analysis. A slower and more uniform degradation and improved cytocompatibility could be shown for the ZX00MEO-PEO group in vitro. A significant reduction of degradation rate and enhanced bone formation around the ZX00MEO-PEO screws in vivo was confirmed. Proficient biocompatibility and tissue integration could generally be shown in vivo regardless of surface state. The tested magnesium alloy shows generally beneficial properties as an implant material, while PEO-surface modification further improves the bioabsorption behavior both in vitro and in vivo. STATEMENT OF SIGNIFICANCE: Devices from bioabsorbable Magnesium have recently been introduced to orthopedic applications. However, the vast degradation of Magnesium within the human body still gives limitations. While reliable in-vivo data on most promising surface treatments such as Plasma-electrolytic-Oxidation is generally scarce, long-time results in large animals are to this date completely missing. To overcome this lack of evidence, we studied a Magnesium-Calzium-Zinc-alloy with surface enhancement by PEO for the first time ever over a period of 18 months in a large animal model. In-vitro, surface-modified screws showed significantly improved cytocompatibility and reduction of degradation confirmed by hydrogen gas evolution testing, while in-vivo radiological and histological evaluation generally showed good biocompatibility and bioabsorption as well as significantly enhanced reduction of degradation and faster bone regeneration in the PEO-surface-modified group.
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Affiliation(s)
| | - Heilwig Fischer
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany; Berlin Institute of Health (BIH), Anna-Louisa-Karsch-Straße 2, Berlin 10178, Germany; Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Ana Prates Soares
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany; Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Katharina Schmidt-Bleek
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Christoph Leber
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Henri Kreiker
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Georg Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Nadja Kröger
- Department of Plastic, Reconstructive and Aesthetic Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Kerpener Str. 62, Cologne 50937, Germany
| | | | - Henning Hanken
- Department of Oral and Maxillofacial Surgery, Asklepios Hospital North, Faculty of Medicine, Semmelweis University Campus Hamburg, Hamburg 20099, Germany; Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg 20246, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock 18057, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg 20246, Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
| | - Carsten Rendenbach
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, Berlin 13353, Germany
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Jung O, Barbeck M, Fan LU, Korte F, Zhao C, Krastev R, Pantermehl S, Xiong X. Republication: In Vitro and Ex Vivo Analysis of Collagen Foams for Soft and Hard Tissue Regeneration. In Vivo 2023; 37:320-328. [PMID: 36593025 PMCID: PMC9843770 DOI: 10.21873/invivo.13082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND/AIM The aim of this study was the conception, production, material analysis and cytocompatibility analysis of a new collagen foam for medical applications. MATERIALS AND METHODS After the innovative production of various collagen sponges from bovine sources, the foams were analyzed ex vivo in terms of their structure (including pore size) and in vitro in terms of cytocompatibility according to EN ISO 10993-5/-12. In vitro, the collagen foams were compared with the established biomaterials cerabone and Jason membrane. Materials cerabone and Jason membrane. RESULTS Collagen foams with different compositions were successfully produced from bovine sources. Ex vivo, the foams showed a stable and long-lasting primary structure quality with a bubble area of 1,000 to 2,000 μm2 In vitro, all foams showed sufficient cytocompatibility. CONCLUSION Collagen sponges represent a promising material for hard and soft tissue regeneration. Future studies could focus on integrating and investigating different additives in the foams.
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Affiliation(s)
- Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Mike Barbeck
- BerlinAnalytix GmbH, Berlin, Germany
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, Berlin, Germany
| | - L U Fan
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Fabian Korte
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Cuifeng Zhao
- Faculty of Applied Chemistry, Reutlingen University, Reutlingen, Germany
| | - Rumen Krastev
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Faculty of Applied Chemistry, Reutlingen University, Reutlingen, Germany
| | - Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
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Ren Y, Fan L, Alkildani S, Liu L, Emmert S, Najman S, Rimashevskiy D, Schnettler R, Jung O, Xiong X, Barbeck M. Barrier Membranes for Guided Bone Regeneration (GBR): A Focus on Recent Advances in Collagen Membranes. Int J Mol Sci 2022; 23:ijms232314987. [PMID: 36499315 PMCID: PMC9735671 DOI: 10.3390/ijms232314987] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/25/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
Guided bone regeneration (GBR) has become a clinically standard modality for the treatment of localized jawbone defects. Barrier membranes play an important role in this process by preventing soft tissue invasion outgoing from the mucosa and creating an underlying space to support bone growth. Different membrane types provide different biological mechanisms due to their different origins, preparation methods and structures. Among them, collagen membranes have attracted great interest due to their excellent biological properties and desired bone regeneration results to non-absorbable membranes even without a second surgery for removal. This work provides a comparative summary of common barrier membranes used in GBR, focusing on recent advances in collagen membranes and their biological mechanisms. In conclusion, the review article highlights the biological and regenerative properties of currently available barrier membranes with a particular focus on bioresorbable collagen-based materials. In addition, the advantages and disadvantages of these biomaterials are highlighted, and possible improvements for future material developments are summarized.
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Affiliation(s)
- Yanru Ren
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
| | - Lu Fan
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | | | - Luo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100013, China
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Stevo Najman
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Denis Rimashevskiy
- Department of Traumatology and Orthopedics, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | - Mike Barbeck
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100013, China
- Correspondence: ; Tel.: +49-(0)-176-81022467
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Bielenstein J, Radenković M, Najman S, Liu L, Ren Y, Cai B, Beuer F, Rimashevskiy D, Schnettler R, Alkildani S, Jung O, Schmidt F, Barbeck M. In Vivo Analysis of the Regeneration Capacity and Immune Response to Xenogeneic and Synthetic Bone Substitute Materials. Int J Mol Sci 2022; 23:ijms231810636. [PMID: 36142541 PMCID: PMC9506561 DOI: 10.3390/ijms231810636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/05/2022] [Accepted: 09/09/2022] [Indexed: 11/28/2022] Open
Abstract
Although various studies have investigated differences in the tissue reaction pattern to synthetic and xenogeneic bone substitute materials (BSMs), a lack of knowledge exists regarding the classification of both materials based on the DIN ISO 10993-6 scoring system, as well as the histomorphometrical measurement of macrophage subtypes within their implantation beds. Thus, the present study was conducted to analyze in vivo responses to both xenogeneic and synthetic bone substitute granules. A standardized calvaria implantation model in Wistar rats, in combination with established scoring, histological, histopathological, and histomorphometrical methods, was conducted to analyze the influence of both biomaterials on bone regeneration and the immune response. The results showed that the application of the synthetic BSM maxresorb® induced a higher pro-inflammatory tissue response, while the xenogeneic BSM cerabone® induced a higher anti-inflammatory reaction. Additionally, comparable bone regeneration amounts were found in both study groups. Histopathological scoring revealed that the synthetic BSM exhibited non-irritant scores at all timepoints using the xenogeneic BSM as control. Overall, the results demonstrated the biocompatibility of synthetic BSM maxresorb® and support the conclusion that this material class is a suitable alternative to natural BSM, such as the analyzed xenogeneic material cerabone®, for a broad range of indications.
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Affiliation(s)
- James Bielenstein
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Luo Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100013, China
| | - Yanru Ren
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Baoyi Cai
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 14197 Berlin, Germany
| | - Florian Beuer
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 14197 Berlin, Germany
| | - Denis Rimashevskiy
- Department of Traumatology and Orthopedics, Peoples’ Friendship University of Russia, 117198 Moscow, Russia
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany
| | | | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
| | - Franziska Schmidt
- Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 14197 Berlin, Germany
| | - Mike Barbeck
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Correspondence: ; Tel.: +49-176-81022467
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Fan L, Körte F, Rudt A, Jung O, Burkhardt C, Barbeck M, Xiong X. Encapsulated vaterite-calcite CaCO3 particles loaded with Mg2+ and Cu2+ ions with sustained release promoting osteogenesis and angiogenesis. Front Bioeng Biotechnol 2022; 10:983988. [PMID: 36032705 PMCID: PMC9403055 DOI: 10.3389/fbioe.2022.983988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 07/18/2022] [Indexed: 11/13/2022] Open
Abstract
Bioactive cations, including calcium, copper and magnesium, have shown the potential to become the alternative to protein growth factor-based therapeutics for bone healing. Ion substitutions are less costly, more stable, and more effective at low concentrations. Although they have been shown to be effective in providing bone grafts with more biological functions, the precise control of ion release kinetics is still a challenge. Moreover, the synergistic effect of three or more metal ions on bone regeneration has rarely been studied. In this study, vaterite-calcite CaCO3 particles were loaded with copper (Cu2+) and magnesium (Mg2+). The polyelectrolyte multilayer (PEM) was deposited on CaCuMg-CO3 particles via layer-by-layer technique to further improve the stability and biocompatibility of the particles and to enable controlled release of multiple metal ions. The PEM coated microcapsules were successfully combined with collagen at the outmost layer, providing a further stimulating microenvironment for bone regeneration. The in vitro release studies showed remarkably stable release of Cu2+ in 2 months without initial burst release. Mg2+ was released in relatively low concentration in the first 7 days. Cell culture studies showed that CaCuMg-PEM-Col microcapsules stimulated cell proliferation, extracellular maturation and mineralization more effectively than blank control and other microcapsules without collagen adsorption (Ca-PEM, CaCu-PEM, CaMg-PEM, CaCuMg-PEM). In addition, the CaCuMg-PEM-Col microcapsules showed positive effects on osteogenesis and angiogenesis in gene expression studies. The results indicate that such a functional and controllable delivery system of multiple bioactive ions might be a safer, simpler and more efficient alternative of protein growth factor-based therapeutics for bone regeneration. It also provides an effective method for functionalizing bone grafts for bone tissue engineering.
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Affiliation(s)
- Lu Fan
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Experimental Medicine, Faculty of Medicine, University of Tübingen, Tübingen, Germany
| | - Fabian Körte
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Alexander Rudt
- Faculty of Applied Chemistry, Reutlingen University, Reutlingen, Germany
| | - Ole Jung
- Medical Center of Rostock University, Rostock, Germany
| | - Claus Burkhardt
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Mike Barbeck
- Medical Center of Rostock University, Rostock, Germany
- *Correspondence: Mike Barbeck, ; Xin Xiong,
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- *Correspondence: Mike Barbeck, ; Xin Xiong,
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Molnár B, Jung AK, Papp Z, Martin A, Orbán K, Pröhl A, Jung O, Barbeck M, Windisch P. Comparative analysis of lateral maxillary sinus augmentation with a xenogeneic bone substitute material in combination with piezosurgical preparation and bony wall repositioning or rotary instrumentation and membrane coverage: a prospective randomized clinical and histological study. Clin Oral Investig 2022; 26:5261-5272. [PMID: 35593928 PMCID: PMC9381628 DOI: 10.1007/s00784-022-04494-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 04/13/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The present randomized controlled clinical study aimed to investigate if, in lateral maxillary sinus augmentation, the repositioned bony wall or the application of a collagen membrane results in more preferable new hard tissue formation. MATERIALS AND METHODS Forty patients were divided into two study groups. Both groups received a xenogeneic bone substitute material (BSM) during lateral sinus augmentation. In the bony wall group (BW), following piezosurgery, the retrieved bony wall was repositioned. In the collagen membrane group (CM), following rotary instrument preparation, collagen membrane coverage was applied. After 6 months, biopsies were taken to histologically analyze the percentage of BSM, connective tissue (CT), and newly formed bone (NFB) following both approaches. RESULTS Forty implants were placed and 29 harvested biopsies could be evaluated. Duration of surgery, membrane perforations, and VAS were detected. Histomorphometrical analysis revealed comparable amounts of all analyzed parameters in both groups in descending order: CT (BW: 39.2 ± 9%, CM: 37,9 ± 8.5%) > BSM (BW: 32.9 ± 6.3%, CM: 31.8 ± 8.8%) > NB (BW: 27.8 ± 11.2%, CM: 30.3 ± 4.5%). CONCLUSIONS The results of the present study show that the closure of the access window by means of the retrieved bony wall or a native collagen membrane led to comparable bone augmentation results. CLINICAL TRIAL clinicaltrials.gov NCT04811768. CLINICAL RELEVANCE Lateral maxillary sinus augmentation with the application of a xenogeneic BSM in combination with a native collagen membrane for bony window coverage represents a reliable method for surgical reconstruction of the posterior maxilla. Piezosurgery with bony window repositioning delivers comparable outcomes without membrane coverage.
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Affiliation(s)
- Bálint Molnár
- Department of Periodontology, Semmelweis University Budapest, Szentkiralyi u. 47, 1088, Budapest, Hungary.
| | - Anne-Kathrin Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Zsuzsanna Papp
- Department of Periodontology, Semmelweis University Budapest, Szentkiralyi u. 47, 1088, Budapest, Hungary
| | - Anna Martin
- Department of Periodontology, Semmelweis University Budapest, Szentkiralyi u. 47, 1088, Budapest, Hungary
| | - Kristóf Orbán
- Department of Periodontology, Semmelweis University Budapest, Szentkiralyi u. 47, 1088, Budapest, Hungary
| | | | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | | | - Péter Windisch
- Department of Periodontology, Semmelweis University Budapest, Szentkiralyi u. 47, 1088, Budapest, Hungary
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8
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Lindner C, Alkildani S, Stojanovic S, Najman S, Jung O, Barbeck M. In Vivo Biocompatibility Analysis of a Novel Barrier Membrane Based on Bovine Dermis-Derived Collagen for Guided Bone Regeneration (GBR). Membranes 2022; 12:membranes12040378. [PMID: 35448348 PMCID: PMC9027842 DOI: 10.3390/membranes12040378] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/19/2022]
Abstract
Collagen-based barrier membranes are nowadays the prevalent option for Guided Bone Regeneration (GBR) procedures. Xenogeneic collagen is highly biocompatible as it shares a similar structure to native human collagen, which prevents it from eliciting an exaggerated host immune response. Most commercially available collagen barrier membranes are porcine-derived, while bovine-derived alternatives are still rarely available. The aim of the present study was to investigate the tissue responses and the barrier functionality of a novel GBR membrane composed of bovine collagen type I (BM). Therefore, the subcutaneous implantation model in Wistar rats was performed to compare the novel medical device with two already clinically used native porcine-based barrier membranes, i.e., Jason® membrane (JM) and Bio-Gide® (BG), at 10-, 30-, 60-, and 90-days post implantationem. Histochemical and immunohistochemical stains were used for histopathological evaluation including a biocompatibility scoring according to the DIN EN ISO 10993-6 norm as well as histomorphometrical analyses of the occurrence of M1 and M2 macrophages and the transmembraneous vascularization. The bovine membrane exhibited a host tissue reaction that was comparable to both control materials, which was verified by the scoring results and the histomorphometrical macrophage measurements. Moreover, the novel membrane exhibited an integration pattern without material fragmentation up to day 60. At day 90, material fragmentation was observable that allowed for “secondary porosity” including transmembrane vascularization. The results of this study suggest that the novel bovine barrier membrane is fully biocompatible and suitable for indications that require GBR as a suitable alternative to porcine-sourced barrier membranes.
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Affiliation(s)
| | - Said Alkildani
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (C.L.); (S.A.)
| | - Sanja Stojanovic
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Nis, Serbia; (S.S.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Nis, Serbia
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Nis, Serbia; (S.S.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Nis, Serbia
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Mike Barbeck
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (C.L.); (S.A.)
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
- Correspondence: ; Tel.: +49-176-81022467
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9
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Barbeck M, Alkildani S, Jung O. Editorial of the Special Issue: “Soft and Hard Tissue Regeneration”. Biomedicines 2022; 10:biomedicines10020356. [PMID: 35203565 PMCID: PMC8962288 DOI: 10.3390/biomedicines10020356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 01/17/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Mike Barbeck
- Department of Ceramic Materials, Institute for Materials Science and Technologies, Technical University of Berlin, 10587 Berlin, Germany;
| | | | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
- Correspondence: ; Tel.: +49-(0)-176-81022467
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10
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Unger RE, Stojanovic S, Besch L, Alkildani S, Schröder R, Jung O, Bogram C, Görke O, Najman S, Tremel W, Barbeck M. In Vivo Biocompatibility Investigation of an Injectable Calcium Carbonate (Vaterite) as a Bone Substitute including Compositional Analysis via SEM-EDX Technology. Int J Mol Sci 2022; 23:ijms23031196. [PMID: 35163120 PMCID: PMC8835873 DOI: 10.3390/ijms23031196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 12/30/2022] Open
Abstract
Injectable bone substitutes (IBS) are increasingly being used in the fields of orthopedics and maxillofacial/oral surgery. The rheological properties of IBS allow for proper and less invasive filling of bony defects. Vaterite is the most unstable crystalline polymorph of calcium carbonate and is known to be able to transform into hydroxyapatite upon contact with an organic fluid (e.g., interstitial body fluid). Two different concentrations of hydrogels based on poly(ethylene glycol)-acetal-dimethacrylat (PEG-a-DMA), i.e., 8% (w/v) (VH-A) or 10% (w/v) (VH-B), were combined with vaterite nanoparticles and implanted in subcutaneous pockets of BALB/c mice for 15 and 30 days. Explants were prepared for histochemical staining and immunohistochemical detection methods to determine macrophage polarization, and energy-dispersive X-ray analysis (EDX) to analyze elemental composition was used for the analysis. The histopathological analysis revealed a comparable moderate tissue reaction to the hydrogels mainly involving macrophages. Moreover, the hydrogels underwent a slow cellular infiltration, revealing a different degradation behavior compared to other IBS. The immunohistochemical detection showed that M1 macrophages were mainly found at the material surfaces being involved in the cell-mediated degradation and tissue integration, while M2 macrophages were predominantly found within the reactive connective tissue. Furthermore, the histomorphometrical analysis revealed balanced numbers of pro- and anti-inflammatory macrophages, demonstrating that both hydrogels are favorable materials for bone tissue regeneration. Finally, the EDX analysis showed a stepwise transformation of the vaterite particle into hydroxyapatite. Overall, the results of the present study demonstrate that hydrogels including nano-vaterite particles are biocompatible and suitable for bone tissue regeneration applications.
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Affiliation(s)
- Ronald E. Unger
- Repair-Lab, Institute of Pathology, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany;
| | - Sanja Stojanovic
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18108 Niš, Serbia; (S.S.); (S.N.)
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18108 Niš, Serbia
| | - Laura Besch
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany; (L.B.); (R.S.); (W.T.)
| | - Said Alkildani
- BerlinAnalytix GmbH, Ullsteinstrasse 108, 12109 Berlin, Germany; (S.A.); (C.B.)
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Romina Schröder
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany; (L.B.); (R.S.); (W.T.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Caroline Bogram
- BerlinAnalytix GmbH, Ullsteinstrasse 108, 12109 Berlin, Germany; (S.A.); (C.B.)
| | - Oliver Görke
- Institute of Materials Science and Technology, Chair of Advanced Ceramic Materials, Technical University Berlin, Hardenbergstr. 40, 10623 Berlin, Germany;
| | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18108 Niš, Serbia; (S.S.); (S.N.)
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18108 Niš, Serbia
| | - Wolfgang Tremel
- Institute of Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany; (L.B.); (R.S.); (W.T.)
| | - Mike Barbeck
- Institute of Materials Science and Technology, Chair of Advanced Ceramic Materials, Technical University Berlin, Hardenbergstr. 40, 10623 Berlin, Germany;
- Correspondence: ; Tel.: +49-176-81022467
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11
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Pantermehl S, Alkildani S, Meyer E, Stowe I, Pissarek J, Moosmann P, Jung O, Barbeck M. In Vitro Analysis of the Cytocompatibility of a Novel Porcine Aortic Patch for Vascular Reconstruction. In Vivo 2022; 36:63-75. [PMID: 34972701 DOI: 10.21873/invivo.12677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/22/2021] [Accepted: 10/26/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Cardiovascular diseases are one of the most common causes of morbidity and mortality in the world. In the case of severe arteriosclerotic damage, surgical treatment is necessary. Although the use of autologous vessels is still considered to be the gold standard, sufficient autologous vessels for transplantation are lacking. MATERIALS AND METHODS In the present study, histological examination and in vitro cytotoxicity analysis according to DIN EN ISO 10993-5 were performed on a newly developed porcine vascular graft from a decellularized aorta. A conventional bovine graft was used as control. RESULTS The ex vivo-histological analysis revealed the effectiveness of a new purification process on the microstructure and the removal of xenogeneic antigen-bearing structures in the new vessels. Furthermore, cell viability and cytotoxicity assays revealed full cytocompatibility. CONCLUSION The novel graft shows no structural damage and gets completely decellularized by the purification process. Superior cytocompatibility, compared with the bovine-derived vascular graft, was demonstrated.
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Affiliation(s)
- Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | | | - Elisa Meyer
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Ignacio Stowe
- Helios Clinic Emil von Behring, Vascular Center Berlin Southwest, Berlin, Germany
| | | | | | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
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12
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Jung O, Hesse B, Stojanovic S, Seim C, Weitkamp T, Batinic M, Goerke O, Kačarević ŽP, Rider P, Najman S, Barbeck M. Biocompatibility Analyses of HF-Passivated Magnesium Screws for Guided Bone Regeneration (GBR). Int J Mol Sci 2021; 22:ijms222212567. [PMID: 34830451 PMCID: PMC8624161 DOI: 10.3390/ijms222212567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/19/2021] [Accepted: 11/19/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Magnesium (Mg) is one of the most promising materials for human use in surgery due to material characteristics such as its elastic modulus as well as its resorbable and regenerative properties. In this study, HF-coated and uncoated novel bioresorbable magnesium fixation screws for maxillofacial and dental surgical applications were investigated in vitro and in vivo to evaluate the biocompatibility of the HF coating. Methods: Mg alloy screws that had either undergone a surface treatment with hydrofluoric-acid (HF) or left untreated were investigated. In vitro investigation included XTT, BrdU and LDH in accordance with the DIN ISO 10993-5/-12. In vivo, the screws were implanted into the tibia of rabbits. After 3 and 6 weeks, degradation, local tissue reactions and bony integration were analyzed histopathologically and histomorphometrically. Additionally, SEM/EDX analysis and synchrotron phase-contrast microtomography (µCT) measurements were conducted. The in vitro analyses revealed that the Mg screws are cytocompatible, with improved results when the surface had been passivated with HF. In vivo, the HF-treated Mg screws implanted showed a reduction in gas formation, slower biodegradation and a better bony integration in comparison to the untreated Mg screws. Histopathologically, the HF-passivated screws induced a layer of macrophages as part of its biodegradation process, whereas the untreated screws caused a slight fibrous tissue reaction. SEM/EDX analysis showed that both screws formed a similar layer of calcium phosphates on their surfaces and were surrounded by bone. Furthermore, the µCT revealed the presence of a metallic core of the screws, a faster absorbing corrosion front and a slow absorbing region of corroded magnesium. Conclusions: Overall, the HF-passivated Mg fixation screws showed significantly better biocompatibility in vitro and in vivo compared to the untreated screws.
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Affiliation(s)
- Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | | | - Sanja Stojanovic
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18108 Niš, Serbia; (S.S.); (S.N.)
- Scientific Research Center for Biomedicine, Faculty of Medicine, Department for Cell and Tissue Engineering, University of Niš, 18108 Niš, Serbia
| | | | - Timm Weitkamp
- Synchrotron SOLEIL, Gif-sur-Yvette, 91190 Saint-Aubin, France;
| | - Milijana Batinic
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University of Berlin, 10623 Berlin, Germany; (M.B.); (O.G.)
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia;
| | - Oliver Goerke
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University of Berlin, 10623 Berlin, Germany; (M.B.); (O.G.)
| | - Željka Perić Kačarević
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia;
| | - Patrick Rider
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia;
| | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18108 Niš, Serbia; (S.S.); (S.N.)
- Scientific Research Center for Biomedicine, Faculty of Medicine, Department for Cell and Tissue Engineering, University of Niš, 18108 Niš, Serbia
| | - Mike Barbeck
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia;
- Correspondence: ; Tel.: +49-176-810-224-6
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13
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Jung O, Lindner C, Pantermehl S, Barbeck M. Heat Development During Medical Drilling: Influencing Factors and Examination Methods - Overview and First Results. In Vivo 2021; 35:3011-3017. [PMID: 34697132 DOI: 10.21873/invivo.12596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/21/2021] [Accepted: 09/07/2021] [Indexed: 11/10/2022]
Abstract
In many medical disciplines, the process of drilling into the bone plays a crucial role for the implantation or fixation of implants or reconstruction plates. During the bone drilling process, heat is generated on the drill head and within the surrounding tissue. As a result, the increased temperature can lead to thermal damage and related necrosis of the (bone) tissue. This tissue damage is dependent on different drilling parameters and can have important influence on the following tissue healing cascade and finally on implant surveillance. In this context, the present short review elucidates the current state of scientific knowledge with regard to the heat-triggering factors during the bony drilling process and how these factors can be better understood and prevented, now and in the future, through new research approaches. External and internal influencing factors during the drilling process are distinguished and methods to examine the temperature changes are compared. This mini-review further demonstrates first preliminary results of the inflammatory tissue reactions to inadequate drilling processes. Furthermore, possible solutions of new standardized ex vivo-measurement methods to better understand the factors influencing the development of heat and to reduce animal experiments are herein discussed.
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Affiliation(s)
- Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany;
| | | | - Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
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14
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Ottenbacher N, Alkildani S, Korzinskas T, Pissarek J, Ulm C, Jung O, Sundag B, Bellmann O, Stojanovic S, Najman S, Zechner W, Barbeck M. Novel Histomorphometrical Approach to Evaluate the Integration Pattern and Functionality of Barrier Membranes. Dent J (Basel) 2021; 9:dj9110127. [PMID: 34821591 PMCID: PMC8618445 DOI: 10.3390/dj9110127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 12/15/2022] Open
Abstract
GBR (guided bone regeneration) is a standard procedure for building up bony defects in the jaw. In this procedure, resorbable membranes made of bovine and porcine collagen are increasingly being used, which, in addition to many possible advantages, could have the potential disadvantage of a shorter barrier functionality, especially when augmenting large-volume defects. Thus, it is of importance to evaluate the integration behavior and especially the standing time of barrier membranes using specialized methods to predict its respective biocompatibility. This study is intended to establish a new histomorphometrical analysis method to quantify the integration rate of collagen-based barrier membranes. Three commercially available barrier membranes, i.e., non-crosslinked membranes (BioGide® and Jason® membrane), a ribose-crosslinked membrane (Ossix® Plus), and a newly developed collagen–hyaluronic acid-based (Coll-HA) barrier membrane were implanted in the subcutaneous tissue of 48 6–8-week-old Wistar rats. The explants, after three timepoints (10, 30, and 60 days), were processed and prepared into histological sections for histopathological (host tissue response) and histomorphometrical (cellular invasion) analyses. 10 days after implantation, fragmentation was not evident in any of the study groups. The sections of the Coll-HA, Jason® and BioGide® membranes showed a similar mild inflammatory reaction within the surrounding tissue and an initial superficial cell immigration. Only in the Ossix® Plus group very little inflammation and no cell invasion was detected. While the results of the three commercially available membranes remained intact in the further course of the study, only fragments of the Coll-HA membrane were found 30 and 60 days after implantation. Histomorphometrically, it can be described that although initially (at 10 days post-implantation) similar results were found in all study groups, after 30 days post-implantation the cellular penetration depth of the hyaluronic acid-collagen membrane was significantly increased with time (**** p < 0.0001). Similarly, the percentage of cellular invasion per membrane thickness was also significantly higher in the Coll-HA group at all timepoints, compared to the other membranes (**** p < 0.0001). Altogether, these results show that the histomorphometrical analysis of the cellular migration can act as an indicator of integration and duration of barrier functionality. Via this approach, it was possible to semi-quantify the different levels of cellular penetration of GBR membranes that were only qualitatively analyzed through histopathological approaches before. Additionally, the results of the histopathological and histomorphometrical analyses revealed that hyaluronic acid addition to collagen does not lead to a prolonged standing time, but an increased integration of a collagen-based biomaterial. Therefore, it can only partially be used in the dental field for indications that require fast resorbed membranes and a fast cell or tissue influx such as periodontal regeneration processes.
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Affiliation(s)
- Nicola Ottenbacher
- Clinical Division of Oral Surgery, Dental University Clinic, Medical University of Vienna, 1090 Vienna, Austria; (N.O.); (C.U.); (W.Z.)
| | - Said Alkildani
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (S.A.); (T.K.)
| | | | | | - Christian Ulm
- Clinical Division of Oral Surgery, Dental University Clinic, Medical University of Vienna, 1090 Vienna, Austria; (N.O.); (C.U.); (W.Z.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (O.J.); (B.S.)
| | - Bernd Sundag
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (O.J.); (B.S.)
| | - Olaf Bellmann
- Research Institute for Farm Animal Biology (FBN), 18196 Dummerstorf, Germany;
| | - Sanja Stojanovic
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of of Niš, 18000 Niš, Serbia; (S.S.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Stevo Najman
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of of Niš, 18000 Niš, Serbia; (S.S.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Werner Zechner
- Clinical Division of Oral Surgery, Dental University Clinic, Medical University of Vienna, 1090 Vienna, Austria; (N.O.); (C.U.); (W.Z.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Mike Barbeck
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)-176-8102-2467
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15
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Rendenbach C, Fischer H, Kopp A, Schmidt-Bleek K, Kreiker H, Stumpp S, Thiele M, Duda G, Hanken H, Beck-Broichsitter B, Jung O, Kröger N, Smeets R, Heiland M. Improved in vivo osseointegration and degradation behavior of PEO surface-modified WE43 magnesium plates and screws after 6 and 12 months. Mater Sci Eng C Mater Biol Appl 2021; 129:112380. [PMID: 34579899 DOI: 10.1016/j.msec.2021.112380] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/30/2021] [Accepted: 08/15/2021] [Indexed: 11/26/2022]
Abstract
Magnesium is a highly promising candidate with respect to its future use as a material for resorbable implants. When magnesium degrades, hydrogen gas is released. High doses of gas emergence are reported to impair osseointegration and may therefore lead to fixation failure. The successful delay and reduction of the degradation rate by applying plasma electrolytic oxidation (PEO) as a post processing surface modification method for magnesium alloy has recently been demonstrated. The aim of this study was thus to compare the degradation behavior of a WE43-based plate system with and without respective PEO surface modification and to further investigate osseointegration, as well as the resulting effects on the surrounding bony tissue of both variants in a miniature pig model. WE43 magnesium screws and plates without (WE43) and with PEO surface modification (WE43-PEO) were implanted in long bones of Göttingen Miniature Pigs. At six and twelve months after surgery, micro-CT and histomorphometric analysis was performed. Residual screw volume (SV/TV; WE43: 28.8 ± 21.1%; WE43-PEO: 62.9 ± 31.0%; p = 0.027) and bone implant contact area (BIC; WE43: 18.1 ± 21.7%; WE43-PEO: 51.6 ± 27.7%; p = 0.015) were increased after six months among the PEO-modified implants. Also, surrounding bone density within the cortical bone was not affected by surface modification (BVTV; WE43: 76.7 ± 13.1%; WE43-PEO: 73.1 ± 16.2%; p = 0.732). Intramedullar (BV/TV; WE43: 33.2 ± 16.7%; WE43-PEO 18.4 ± 9.0%; p = 0.047) and subperiosteal (bone area; WE43: 2.6 ± 3.4 mm2; WE43-PEO: 6,9 ± 5.2 mm2; p = 0.049) new bone formation was found for both, surface-modified and non-surface-modified groups. After twelve months, no significant differences of SV/TV and BV/TV were found between the two groups. PEO surface modification of WE43 plate systems improved osseointegration and significantly reduced the degradation rate within the first six months in vivo. Osteoconductive and osteogenic stimulation by WE43 magnesium implants led to overall increased bone growth, when prior PEO surface modification was conducted.
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Affiliation(s)
- Carsten Rendenbach
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Heilwig Fischer
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany; Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | | | - Katharina Schmidt-Bleek
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Henri Kreiker
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Sabine Stumpp
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Mario Thiele
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Georg Duda
- Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Henning Hanken
- Department of Oral and Maxillofacial Surgery, Asklepios Hospital North, Faculty of Medicine, Semmelweis University Campus Hamburg, Langenhorner Chaussee 560, 22419 Hamburg, Germany
| | - Benedicta Beck-Broichsitter
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Schillingallee 35, 18057 Rostock, Germany
| | - Nadja Kröger
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Cologne, Kerpener Str. 62, 50 937 Köln, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery, Charité - Universitätsmedizin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Augustenburger Platz 1, 13353, Berlin, Germany
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16
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Emmert S, Pantermehl S, Foth A, Waletzko-Hellwig J, Hellwig G, Bader R, Illner S, Grabow N, Bekeschus S, Weltmann KD, Jung O, Boeckmann L. Combining Biocompatible and Biodegradable Scaffolds and Cold Atmospheric Plasma for Chronic Wound Regeneration. Int J Mol Sci 2021; 22:9199. [PMID: 34502107 PMCID: PMC8430875 DOI: 10.3390/ijms22179199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/04/2021] [Accepted: 08/24/2021] [Indexed: 12/21/2022] Open
Abstract
Skin regeneration is a quite complex process. Epidermal differentiation alone takes about 30 days and is highly regulated. Wounds, especially chronic wounds, affect 2% to 3% of the elderly population and comprise a heterogeneous group of diseases. The prevailing reasons to develop skin wounds include venous and/or arterial circulatory disorders, diabetes, or constant pressure to the skin (decubitus). The hallmarks of modern wound treatment include debridement of dead tissue, disinfection, wound dressings that keep the wound moist but still allow air exchange, and compression bandages. Despite all these efforts there is still a huge treatment resistance and wounds will not heal. This calls for new and more efficient treatment options in combination with novel biocompatible skin scaffolds. Cold atmospheric pressure plasma (CAP) is such an innovative addition to the treatment armamentarium. In one CAP application, antimicrobial effects, wound acidification, enhanced microcirculations and cell stimulation can be achieved. It is evident that CAP treatment, in combination with novel bioengineered, biocompatible and biodegradable electrospun scaffolds, has the potential of fostering wound healing by promoting remodeling and epithelialization along such temporarily applied skin replacement scaffolds.
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Affiliation(s)
- Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (A.F.); (O.J.)
| | - Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (A.F.); (O.J.)
| | - Aenne Foth
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (A.F.); (O.J.)
| | - Janine Waletzko-Hellwig
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Georg Hellwig
- Clinic and Policlinic for Orthopedics, University Medical Center Rostock, 18057 Rostock, Germany; (G.H.); (R.B.)
| | - Rainer Bader
- Clinic and Policlinic for Orthopedics, University Medical Center Rostock, 18057 Rostock, Germany; (G.H.); (R.B.)
| | - Sabine Illner
- Institute for Biomedical Engineering, University Medical Center Rostock, 18119 Rostock, Germany; (S.I.); (N.G.)
| | - Niels Grabow
- Institute for Biomedical Engineering, University Medical Center Rostock, 18119 Rostock, Germany; (S.I.); (N.G.)
| | - Sander Bekeschus
- ZIK Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (S.B.); (K.-D.W.)
| | - Klaus-Dieter Weltmann
- ZIK Plasmatis, Leibniz Institute for Plasma Science and Technology (INP), 17489 Greifswald, Germany; (S.B.); (K.-D.W.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (A.F.); (O.J.)
| | - Lars Boeckmann
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (A.F.); (O.J.)
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17
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Jung O, Barbeck M, Fan LU, Korte F, Zhao C, Krastev R, Pantermehl S, Xiong X. In Vitro and Ex Vivo Analysis of Collagen Foams for Soft and Hard Tissue Regeneration. In Vivo 2021; 35:2541-2549. [PMID: 34410941 DOI: 10.21873/invivo.12536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND/AIM The aim of this study was the conception, production, material analysis and cytocompatibility analysis of a new collagen foam for medical applications. MATERIALS AND METHODS After the innovative production of various collagen sponges from bovine sources, the foams were analyzed ex vivo in terms of their structure (including pore size) and in vitro in terms of cytocompatibility according to EN ISO 10993-5/-12. In vitro, the collagen foams were compared with the established soft and hard tissue materials cerabone and Jason membrane (both botiss biomaterials GmbH, Zossen, Germany). RESULTS Collagen foams with different compositions were successfully produced from bovine sources. Ex vivo, the foams showed a stable and long-lasting primary structure quality with a bubble area of 1,000 to 2,000 μm2 In vitro, all foams showed sufficient cytocompatibility. CONCLUSION Collagen sponges represent a promising material for hard and soft tissue regeneration. Future studies could focus on integrating and investigating different additives in the foams.
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Affiliation(s)
- Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Mike Barbeck
- BerlinAnalytix GmbH, Berlin, Germany.,Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, Berlin, Germany
| | - L U Fan
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Fabian Korte
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
| | - Cuifeng Zhao
- Faculty of Applied Chemistry, Reutlingen University, Reutlingen, Germany
| | - Rumen Krastev
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany.,Faculty of Applied Chemistry, Reutlingen University, Reutlingen, Germany
| | - Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Xin Xiong
- BerlinAnalytix GmbH, Berlin, Germany;
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18
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Stöwe I, Pissarek J, Moosmann P, Pröhl A, Pantermehl S, Bielenstein J, Radenkovic M, Jung O, Najman S, Alkildani S, Barbeck M. Ex Vivo and In Vivo Analysis of a Novel Porcine Aortic Patch for Vascular Reconstruction. Int J Mol Sci 2021; 22:7623. [PMID: 34299243 PMCID: PMC8303394 DOI: 10.3390/ijms22147623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/25/2021] [Accepted: 07/13/2021] [Indexed: 01/12/2023] Open
Abstract
(1) Background: The aim of the present study was the biocompatibility analysis of a novel xenogeneic vascular graft material (PAP) based on native collagen won from porcine aorta using the subcutaneous implantation model up to 120 days post implantationem. As a control, an already commercially available collagen-based vessel graft (XenoSure®) based on bovine pericardium was used. Another focus was to analyze the (ultra-) structure and the purification effort. (2) Methods: Established methodologies such as the histological material analysis and the conduct of the subcutaneous implantation model in Wistar rats were applied. Moreover, established methods combining histological, immunohistochemical, and histomorphometrical procedures were applied to analyze the tissue reactions to the vessel graft materials, including the induction of pro- and anti-inflammatory macrophages to test the immune response. (3) Results: The results showed that the PAP implants induced a special cellular infiltration and host tissue integration based on its three different parts based on the different layers of the donor tissue. Thereby, these material parts induced a vascularization pattern that branches to all parts of the graft and altogether a balanced immune tissue reaction in contrast to the control material. (4) Conclusions: PAP implants seemed to be advantageous in many aspects: (i) cellular infiltration and host tissue integration, (ii) vascularization pattern that branches to all parts of the graft, and (iii) balanced immune tissue reaction that can result in less scar tissue and enhanced integrative healing patterns. Moreover, the unique trans-implant vascularization can provide unprecedented anti-infection properties that can avoid material-related bacterial infections.
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Affiliation(s)
- Ignacio Stöwe
- Helios Clinic Emil-von-Behring, Department of Vascular and Endovascular Surgery, 14165 Berlin, Germany;
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (J.B.); (O.J.)
| | - Jens Pissarek
- biotrics bioimplants AG, 12109 Berlin, Germany; (J.P.); (P.M.)
| | - Pia Moosmann
- biotrics bioimplants AG, 12109 Berlin, Germany; (J.P.); (P.M.)
| | - Annica Pröhl
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (A.P.); (S.A.)
| | - Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (J.B.); (O.J.)
| | - James Bielenstein
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (J.B.); (O.J.)
| | - Milena Radenkovic
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia; (M.R.); (S.N.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (J.B.); (O.J.)
| | - Stevo Najman
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia; (M.R.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Said Alkildani
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (A.P.); (S.A.)
| | - Mike Barbeck
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany
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19
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Jaurich H, Becerikli M, Zerrer J, Wallner C, Wagner JM, Dadras M, Jettkant B, Schildhauer TA, Lehnhardt M, Jung O, Behr B. Hierarchical Ceramic Coating Reduces Adherence of Cells, Blood, Bacteria, and Tissue on Titanium Microsurgical Instruments. J Reconstr Microsurg 2021; 38:47-55. [PMID: 34154025 DOI: 10.1055/s-0041-1729881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Progress in the field of microsurgery allows more detailed reconstructions of the smallest tissue structures. The applied instruments are left with biological residues after coming into contact with body fluids or tissue, leading to compromised surgical precision. Designing of residue-free innovative instruments would reduce the necessity of subsidiary practices and would improve the surgical precision. METHODS We designed a ceramic coating (Lotus ceramic coating system 26-LCC-26) that exhibits self-cleaning surface properties on coated titanium specimens. A titanium surface was modified by blasting technology and electropolishing, followed by applying a high-performance ceramic and sol-gel finish layer. The physical surface characterization was performed by scanning electron microscopy and measuring the contact angle. The cell-repellent properties and cytotoxicity were investigated using live-dead staining, BrdU, and lactate dehydrogenase assay. Furthermore, bacterial and fluid-adhesion tests were performed. Finally, blood compatibility was analyzed according to DIN ISO 10993. RESULTS The composite system LCC-26 increased the hydrophobic character of the titanium surface (the water contact angle of 74.9 degrees was compared with 62.7 degrees of the uncoated native titanium; p < 0.01) and led to the fluid and cell-repellent properties shown by the reduction in fibroblast adherence by ∼50.7% (p < 0.05), the reduction in Staphylococcus aureus pathogen colonization by 74.1% (p < 0.001), and the decrease in erythrocyte adherence by 62.9% (p < 0.01). Furthermore, the LCC-26 coated titanium microforceps dipped in human whole blood exhibited blood-repellent character (reduction in blood adherence by 46.1%; p < 0.05). Additionally, cyto- and hemocompatibility was guaranteed in direct and indirect tests. CONCLUSION Titanium surface modification on surgical instruments exhibits cell, bacteria, and blood-repellent properties with a full guarantee of cyto- and hemocompatibility. Thus, innovatively coated instruments could contribute to increased precision during microsurgical interventions and optimized medical operation routines in the future.
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Affiliation(s)
- Henriette Jaurich
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Mustafa Becerikli
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Jörg Zerrer
- ELB - Eloxalwerk Ludwigsburg Helmut Zerrer GmbH, Ludwigsburg, Germany
| | - Christoph Wallner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Johannes M Wagner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Mehran Dadras
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Birger Jettkant
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Thomas A Schildhauer
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Marcus Lehnhardt
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Head- and Neurocentrum, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Björn Behr
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
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20
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Martens MC, Edelkamp J, Seebode C, Schäfer M, Stählke S, Krohn S, Jung O, Murua Escobar H, Emmert S, Boeckmann L. Generation and Characterization of a CRISPR/Cas9-Mediated SNAP29 Knockout in Human Fibroblasts. Int J Mol Sci 2021; 22:ijms22105293. [PMID: 34069872 PMCID: PMC8157373 DOI: 10.3390/ijms22105293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 12/26/2022] Open
Abstract
Loss-of-function mutations in the synaptosomal-associated protein 29 (SNAP29) lead to the rare autosomal recessive neurocutaneous cerebral dysgenesis, neuropathy, ichthyosis, and keratoderma (CEDNIK) syndrome. SNAP29 is a soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) protein. So far, it has been shown to be involved in membrane fusion, epidermal differentiation, formation of primary cilia, and autophagy. Recently, we reported the successful generation of two mouse models for the human CEDNIK syndrome. The aim of this investigation was the generation of a CRISPR/Cas9-mediated SNAP29 knockout (KO) in an immortalized human cell line to further investigate the role of SNAP29 in cellular homeostasis and signaling in humans independently of animal models. Comparison of different methods of delivery for CRISPR/Cas9 plasmids into the cell revealed that lentiviral transduction is more efficient than transfection methods. Here, we reported to the best of our knowledge the first successful generation of a CRISPR/Cas9-mediated SNAP29 KO in immortalized human MRC5Vi fibroblasts (c.169_196delinsTTCGT) via lentiviral transduction.
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Affiliation(s)
- Marie Christine Martens
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Janin Edelkamp
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Christina Seebode
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Mirijam Schäfer
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Susanne Stählke
- Department of Cell Biology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Saskia Krohn
- Clinic for Hematology, Oncology and Palliative Care, University Medical Center Rostock, 18057 Rostock, Germany; (S.K.); (H.M.E.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Hugo Murua Escobar
- Clinic for Hematology, Oncology and Palliative Care, University Medical Center Rostock, 18057 Rostock, Germany; (S.K.); (H.M.E.)
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
| | - Lars Boeckmann
- Clinic and Policlinic for Dermatology and Venerology, University Medical Center Rostock, 18057 Rostock, Germany; (M.C.M.); (J.E.); (C.S.); (M.S.); (O.J.); (S.E.)
- Correspondence:
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21
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Pröhl A, Batinic M, Alkildani S, Hahn M, Radenkovic M, Najman S, Jung O, Barbeck M. In Vivo Analysis of the Biocompatibility and Bone Healing Capacity of a Novel Bone Grafting Material Combined with Hyaluronic Acid. Int J Mol Sci 2021; 22:ijms22094818. [PMID: 34062885 PMCID: PMC8124336 DOI: 10.3390/ijms22094818] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/26/2021] [Accepted: 04/28/2021] [Indexed: 12/28/2022] Open
Abstract
The present in vivo study analyses both the inflammatory tissue reactions and the bone healing capacity of a newly developed bone substitute material (BSM) based on xenogeneic bone substitute granules combined with hyaluronate (HY) as a water-binding molecule. The results of the hyaluronate containing bone substitute material (BSM) were compared to a control xenogeneic BSM of the same chemical composition and a sham operation group up to 16 weeks post implantationem. A major focus of the study was to analyze the residual hyaluronate and its effects on the material-dependent healing behavior and the inflammatory tissue responses. The study included 63 male Wistar rats using the calvaria implantation model for 2, 8, and 16 weeks post implantationem. Established and Good Laboratory Practice (GLP)-conforming histological, histopathological, and histomorphometrical analysis methods were conducted. The results showed that the new hyaluronate containing BSM was gradually integrated within newly formed bone up to the end of the study that ended in a condition of complete bone defect healing. Thereby, no differences to the healing capacity of the control BSM were found. However, the bone formation in both groups was continuously significantly higher compared to the sham operation group. Additionally, no differences in the (inflammatory) tissue response that was analyzed via qualitative and (semi-) quantitative methods were found. Interestingly, no differences were found between the numbers of pro- and anti-inflammatory macrophages between the three study groups over the entire course of the study. No signs of the HY as a water-binding part of the BSM were histologically detectable at any of the study time points, altogether the results of the present study show that HY allows for an optimal material-associated bone tissue healing comparable to the control xenogeneic BSM. The added HY seems to be degraded within a very short time period of less than 2 weeks so that the remaining BSM granules allow for a gradual osteoconductive bone regeneration. Additionally, no differences between the inflammatory tissue reactions in both material groups and the sham operation group were found. Thus, the new hyaluronate containing xenogeneic BSM and also the control BSM have been shown to be fully biocompatible without any differences regarding bone regeneration.
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Affiliation(s)
- Annica Pröhl
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (A.P.); (M.B.); (S.A.)
| | - Milijana Batinic
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (A.P.); (M.B.); (S.A.)
| | - Said Alkildani
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (A.P.); (M.B.); (S.A.)
| | - Michael Hahn
- Institute of Osteology and Biomechanics, Eppendorf University Hospital, University of Hamburg, 20246 Hamburg, Germany;
| | - Milena Radenkovic
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18108 Niš, Serbia; (M.R.); (S.N.)
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18108 Niš, Serbia; (M.R.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18108 Niš, Serbia
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Mike Barbeck
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany
- Correspondence: ; Tel.: +49-176-81022467
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22
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Oberdiek F, Vargas CI, Rider P, Batinic M, Görke O, Radenković M, Najman S, Baena JM, Jung O, Barbeck M. Ex Vivo and In Vivo Analyses of Novel 3D-Printed Bone Substitute Scaffolds Incorporating Biphasic Calcium Phosphate Granules for Bone Regeneration. Int J Mol Sci 2021; 22:3588. [PMID: 33808303 PMCID: PMC8037651 DOI: 10.3390/ijms22073588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 12/12/2022] Open
Abstract
(1) Background: The aim of this study was examining the ex vivo and in vivo properties of a composite made from polycaprolactone (PCL) and biphasic calcium phosphate (BCP) (synprint, ScientiFY GmbH) fabricated via fused deposition modelling (FDM); (2) Methods: Scaffolds were tested ex vivo for their mechanical properties using porous and solid designs. Subcutaneous implantation model analyzed the biocompatibility of PCL + BCP and PCL scaffolds. Calvaria implantation model analyzed the osteoconductive properties of PCL and PCL + BCP scaffolds compared to BCP as control group. Established histological, histopathological and histomorphometrical methods were performed to evaluate new bone formation.; (3) Results Mechanical testing demonstrated no significant differences between PCL and PCL + BCP for both designs. Similar biocompatibility was observed subcutaneously for PCL and PCL + BCP scaffolds. In the calvaria model, new bone formation was observed for all groups with largest new bone formation in the BCP group, followed by the PCL + BCP group, and the PCL group. This finding was influenced by the initial volume of biomaterial implanted and remaining volume after 90 days. All materials showed osteoconductive properties and PCL + BCP tailored the tissue responses towards higher cellular biodegradability. Moreover, this material combination led to a reduced swelling in PCL + BCP; (4) Conclusions: Altogether, the results show that the newly developed composite is biocompatible and leads to successful osteoconductive bone regeneration. The new biomaterial combines the structural stability provided by PCL with bioactive characteristics of BCP-based BSM. 3D-printed BSM provides an integration behavior in accordance with the concept of guided bone regeneration (GBR) by directing new bone growth for proper function and restoration.
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Affiliation(s)
| | - Carlos Ivan Vargas
- Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, Calle José Gutierrez Abascal, 2, 28006 Madrid, Spain
- REGEMAT 3D, Avenida del conocimiento 41, A-111, 18016 Granada, Spain;
| | | | - Milijana Batinic
- Research Department, BerlinAnalytix GmbH, 12109 Berlin, Germany;
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany;
| | - Oliver Görke
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany;
| | - Milena Radenković
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia; (M.R.); (S.N.)
| | - Stevo Najman
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia; (M.R.); (S.N.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Jose Manuel Baena
- REGEMAT 3D, Avenida del conocimiento 41, A-111, 18016 Granada, Spain;
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Mike Barbeck
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany;
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23
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Pantermehl S, Emmert S, Foth A, Grabow N, Alkildani S, Bader R, Barbeck M, Jung O. 3D Printing for Soft Tissue Regeneration and Applications in Medicine. Biomedicines 2021; 9:biomedicines9040336. [PMID: 33810541 PMCID: PMC8066192 DOI: 10.3390/biomedicines9040336] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/16/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023] Open
Abstract
The use of additive manufacturing (AM) technologies is a relatively young research area in modern medicine. This technology offers a fast and effective way of producing implants, tissues, or entire organs individually adapted to the needs of a patient. Today, a large number of different 3D printing technologies with individual application areas are available. This review is intended to provide a general overview of these various printing technologies and their function for medical use. For this purpose, the design and functionality of the different applications are presented and their individual strengths and weaknesses are explained. Where possible, previous studies using the respective technologies in the field of tissue engineering are briefly summarized.
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Affiliation(s)
- Sven Pantermehl
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (S.E.); (A.F.); (O.J.)
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (S.E.); (A.F.); (O.J.)
| | - Aenne Foth
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (S.E.); (A.F.); (O.J.)
| | - Niels Grabow
- Institute for Biomedical Engineering, University Medical Center Rostock, 18119 Rostock, Germany;
| | | | - Rainer Bader
- Clinic and Policlinic for Orthopedics, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Mike Barbeck
- BerlinAnalytix GmbH, 12109 Berlin, Germany;
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, 10623 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)-17681022467
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany; (S.P.); (S.E.); (A.F.); (O.J.)
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24
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Becerikli M, Kopp A, Kröger N, Bodrova M, Wallner C, Wagner JM, Dadras M, Jettkant B, Pöhl F, Lehnhardt M, Jung O, Behr B. A novel titanium implant surface modification by plasma electrolytic oxidation (PEO) preventing tendon adhesion. Mater Sci Eng C Mater Biol Appl 2021; 123:112030. [PMID: 33812645 DOI: 10.1016/j.msec.2021.112030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/11/2021] [Accepted: 03/02/2021] [Indexed: 10/21/2022]
Abstract
Titanium is one of the most commonly used materials for implants in trauma applications due to its low density, high corrosion resistance and biocompatibility. Nevertheless, there is still a need for improved surface modifications of Titanium, in order to change surface properties such as wettability, antibacterial properties or tissue attachment. In this study, different novel plasma electrolytic oxidation (PEO) modifications have been investigated for tendon adhesion to implants commonly used in hand surgery. Titanium samples with four different PEO modifications were prepared by varying the electrolyte composition and analyzed with regards to their surface properties. Unmodified titanium blanks and Dotize® coating served as controls. Samples were examined using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), contact angle measuring system and analyzed for their biocompatibility and hemocompatibility (according to DIN ISO 10993-5 and 10,993-4). Finally, tendon adhesion of these specific surfaces were investigated by pull-off tests. Our findings show that surface thickness of PEO modifications was about 12-20 μm and had porous morphology. One modification demonstrated hydrophilic behavior accompanied by good biocompatibility without showing cytotoxic properties. Furthermore, no hemolytic effect and no significant influence on hemocompatibility were observed. Pull-off tests revealed a significant reduction of tendon adhesion by 64.3% (35.7% residual adhesion), compared to unmodified titanium (100%). In summary, the novel PEO-based ceramic-like porous modification for titanium surfaces might be considered a good candidate for orthopedic applications supporting a more efficient recovery.
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Affiliation(s)
- Mustafa Becerikli
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | | | | | | | - Christoph Wallner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Johannes Maximilian Wagner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Mehran Dadras
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Birger Jettkant
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Fabian Pöhl
- Chair of Materials Technology, Ruhr-University Bochum, Bochum, Germany
| | - Marcus Lehnhardt
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Head- and Neurocenter, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Björn Behr
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany.
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Kapogianni E, Alkildani S, Radenkovic M, Xiong X, Krastev R, Stöwe I, Bielenstein J, Jung O, Najman S, Barbeck M, Rothamel D. The Early Fragmentation of a Bovine Dermis-Derived Collagen Barrier Membrane Contributes to Transmembraneous Vascularization-A Possible Paradigm Shift for Guided Bone Regeneration. Membranes (Basel) 2021; 11:membranes11030185. [PMID: 33803205 PMCID: PMC7999168 DOI: 10.3390/membranes11030185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 12/14/2022]
Abstract
Collagen-based barrier membranes are an essential component in Guided Bone Regeneration (GBR) procedures. They act as cell-occlusive devices that should maintain a micromilieu where bone tissue can grow, which in turn provides a stable bed for prosthetic implantation. However, the standing time of collagen membranes has been a challenging area, as native membranes are often prematurely resorbed. Therefore, consolidation techniques, such as chemical cross-linking, have been used to enhance the structural integrity of the membranes, and by consequence, their standing time. However, these techniques have cytotoxic tendencies and can cause exaggerated inflammation and in turn, premature resorption, and material failures. However, tissues from different extraction sites and animals are variably cross-linked. For the present in vivo study, a new collagen membrane based on bovine dermis was extracted and compared to a commercially available porcine-sourced collagen membrane extracted from the pericardium. The membranes were implanted in Wistar rats for up to 60 days. The analyses included well-established histopathological and histomorphometrical methods, including histochemical and immunohistochemical staining procedures, to detect M1- and M2-macrophages as well as blood vessels. Initially, the results showed that both membranes remained intact up to day 30, while the bovine membrane was fragmented at day 60 with granulation tissue infiltrating the implantation beds. In contrast, the porcine membrane remained stable without signs of material-dependent inflammatory processes. Therefore, the bovine membrane showed a special integration pattern as the fragments were found to be overlapping, providing secondary porosity in combination with a transmembraneous vascularization. Altogether, the bovine membrane showed comparable results to the porcine control group in terms of biocompatibility and standing time. Moreover, blood vessels were found within the bovine membranes, which can potentially serve as an additional functionality of barrier membranes that conventional barrier membranes do not provide.
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Affiliation(s)
| | - Said Alkildani
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (S.A.); (J.B.)
| | - Milena Radenkovic
- Scientific Research Center for Biomedicine, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Nis, 18108 Nis, Serbia;
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute at the University of Tübingen, 72770 Reutlingen, Germany; (X.X.); (R.K.)
| | - Rumen Krastev
- NMI Natural and Medical Sciences Institute at the University of Tübingen, 72770 Reutlingen, Germany; (X.X.); (R.K.)
- Faculty of Applied Chemistry, Reutlingen University, 72762 Reutlingen, Germany
| | - Ignacio Stöwe
- Helios Klinikum Emil von Behring, Gefäßzentrum Berlin Südwest, 14165 Berlin, Germany;
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | | | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Stevo Najman
- Department of Biology and Human Genetics, Department for Cell and Tissue Engineering, Faculty of Medicine, University of Nis, 18108 Nis, Serbia;
| | - Mike Barbeck
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (S.A.); (J.B.)
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University of Berlin, 10587 Berlin, Germany
- Correspondence: ; Tel.: +49-176-81022467
| | - Daniel Rothamel
- Department of Oral and Maxillofacial Plastic Surgery, Evangelic Johanniter Hospital Bethesda Mönchengladbach, 41061 Mönchengladbach, Germany;
- Department of Oral and Maxillofacial Plastic Surgery, Heinrich-Heine Universität Düsseldorf, 40225 Düsseldorf, Germany
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26
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Gueldenpfennig T, Houshmand A, Najman S, Stojanovic S, Korzinskas T, Smeets R, Gosau M, Pissarek J, Emmert S, Jung O, Barbeck M. The Condensation of Collagen Leads to an Extended Standing Time and a Decreased Pro-inflammatory Tissue Response to a Newly Developed Pericardium-based Barrier Membrane for Guided Bone Regeneration. In Vivo 2021; 34:985-1000. [PMID: 32354884 DOI: 10.21873/invivo.11867] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/18/2020] [Accepted: 02/25/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND/AIM A new manufacturing process has been established for the condensation of collagen derived from porcine pericardium to develop a new dental barrier membrane (CPM) that can provide a long barrier functionality. A native collagen membrane (PM) was used as control. MATERIALS AND METHODS Established in vitro procedures using L929 and MC3T3 cells were used for cytocompatibility analyses. For the in vivo study, subcutaneous implantation of both membrane types in 40 BALB/c mice and established histological, immuno histochemical and histomorphometrical methods were conducted. RESULTS Both the in vitro and in vivo results revealed that the CPM has a biocompatibility profile comparable to that of the control membrane. The new CPM induced a tissue reaction including more M2-macrophages. CONCLUSION The CPM is fully biocompatible and seems to support the early healing process. Moreover, the new biomaterial seems to prevent cell ingrowth for a longer period of time, making it ideally suited for GBR procedures.
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Affiliation(s)
- Tristan Gueldenpfennig
- University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Werner Forßmann Hospital Eberswalde, Eberswalde, Germany
| | | | - Stevo Najman
- Department for Cell and Tissue Engineering Institute of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Sanja Stojanovic
- Department for Cell and Tissue Engineering Institute of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia
| | | | - Ralf Smeets
- University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Martin Gosau
- University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Ole Jung
- University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Mike Barbeck
- University Hospital Hamburg-Eppendorf, Hamburg, Germany .,BerlinAnalytix GmbH, Berlin, Germany
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Alkildani S, Jung O, Barbeck M. In Vitro Investigation of Jellyfish Collagen as a Tool in Cell Culture and (Bone) Tissue Engineering. Anticancer Res 2021; 41:707-717. [PMID: 33517275 DOI: 10.21873/anticanres.14822] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Jellyfish collagen serves as a competitive alternative to mammalian-sourced collagen in many practical aspects. For instance, jellyfish collagen lacks religious constraints when compared to bovine or porcine sources and promises batch-to-batch consistency. Another advantage is its structural similarity with many mammalian collagen types, providing a biocompatible matrix for different cell types as "collagen type 0". This paper intends to investigate jellyfish collagen (Jellagen®) in two applications. This investigation aims to establish an initial understanding of jellyfish collagen in biotechnology. More specifically, in cell culture and the field of tissue engineering. MATERIALS AND METHODS The jellyfish collagen was comparatively tested as a coating material for multi-well plates as one of the most extensively used tools in cell culture and in the form of three-dimensional (3D) scaffolds intended for bone tissue engineering (BTE) applications. Both, the coated well plates and the scaffolds were seeded with fibroblasts and pre-osteoblasts, separately. In vitro cytocompatibility assays in accordance with EN ISO 10993-5/-12 regulations and LIVE-DEAD-stainings were carried out to study the cell viability, cytotoxicity and proliferation of these two cell lines. RESULTS The results showed that collagen extracted from R. pulmo jellyfish can be an alternative to mammalian-derived collagen. Fibroblasts showed comparable cell viability to the medium control and an increased cell proliferation on the well plates indicating that these coated well plates can be used in cell culture, particularly in biocompatibility studies of biomaterials (as fibroblasts are used in this respective field extensively). The viability of pre-osteoblasts significantly exceeded the medium control in case of the jellyfish 3D scaffolds. CONCLUSION These cells exhibited favorable healthy behavior on this marine collagen, suggesting that Jellagen® collagen can be used in studies of (bone) tissue regeneration and especially as scaffolds in BTE. In conclusion, jellyfish collagen provides biocompatibility and adhesive properties for both cell culture and BTE applications.
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Affiliation(s)
- Said Alkildani
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University of Berlin, Berlin, Germany.,BerlinAnalytix GmbH, Berlin, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Mike Barbeck
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University of Berlin, Berlin, Germany; .,BerlinAnalytix GmbH, Berlin, Germany
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Barbeck M, Jung O, Smeets R, Gosau M, Schnettler R, Rider P, Houshmand A, Korzinskas T. Implantation of an Injectable Bone Substitute Material Enables Integration Following the Principles of Guided Bone Regeneration. In Vivo 2020; 34:557-568. [PMID: 32111754 DOI: 10.21873/invivo.11808] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/18/2019] [Accepted: 11/25/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND/AIM The present study investigates the in vivo tissue reaction and the integration behavior of an injectable bone substitute material (IBS) composed of a water-based gel combined with nano hydroxyapatite particles and biphasic calcium phosphate granules. The results of the IBS were compared to biphasic bone substitute granules (BBSM) of the same chemical composition. MATERIALS AND METHODS The subcutaneous implantation model in 40 female 5-week-old CD-1 mice up to 60 days after implantation was used for conduction of the in vivo experiments. Moreover, established histological, histopathological and histomorphometrical methods were applied. RESULTS The results showed that the IBS was gradually invaded by cells and complex tissue elements. Thus, the implant bed could be distinguished in two areas, i.e. an outer and inner region. While the outer region started to interact with the peri-implant tissue by evoking multinucleated giant cells and at earlier time points by undergoing a continuous high vascularization, the inner part was free of peri-implant cells for at least 30 days, starting to undergo a similar tissue reaction at a later time point. The bone substitute granules allowed for a fast tissue influx between the interspaces of the granules starting at day 10. While the vessel density did not differ in both groups up to the end of the study, the amount of vascularization was significantly higher over the entire observation period in the BBSM group. Moreover, the amount of biomaterial-associated multinucleated giant cells (BMGCs) was significantly higher in the IBS group in the period of between 15 to 30 days after implantation, while comparable BMGC numbers were found in both groups towards the end of the study. CONCLUSION IBS can build a barrier-like structure that is able to control the soft tissue influx into the central regions of the implantation bed, which could not be observed in other bone substitute granules of the same chemical composition. This directed integration behavior is assumed to be in accordance with the concept of Guided Bone Regeneration (GBR). Furthermore, BMGCs can significantly influence the process of angiogenesis within an implant bed of a biomaterial but not the maturity of blood vessels.
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Affiliation(s)
- Mike Barbeck
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany .,BerlinAnalytix GmbH, Berlin, Germany
| | - Ole Jung
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany.,Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Ralf Smeets
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany
| | - Martin Gosau
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany
| | - Reiner Schnettler
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany
| | | | - Alireza Houshmand
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany
| | - Tadas Korzinskas
- University Hospital Hamburg-Eppendorf, Department of Oral and Maxillofacial Surgery, Hamburg, Germany
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Kauther MD, Gödde K, Burggraf M, Hilken G, Wissmann A, Krüger C, Lask S, Jung O, Mitevski B, Fischer A, Dudda M, Behr B, Herten M. In-vivo comparison of the Ni-free steel X13CrMnMoN18-14-3 and titanium alloy implants in rabbit femora - A promising steel for orthopedic surgery. J Biomed Mater Res B Appl Biomater 2020; 109:797-807. [PMID: 33166074 DOI: 10.1002/jbm.b.34745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 08/31/2020] [Accepted: 10/12/2020] [Indexed: 01/07/2023]
Abstract
A variety of metallic biomaterials is used for fracture fixation. Allergic reactions towards nickel-containing steels urge the need for alternatives. The present study investigated the suitability of the nickel-free stainless steel P2000 in comparison to titanium alloy implants for bone surgical applications in a rabbit femora defect model. Thirty-six rabbits received two different cylindrical implants press-fit inserted into the distal femoral metaphysis. At day 0, 28, and 56, implant ingrowth was monitored by radiography; implant stability was assessed by pull-out torque measurements while bone-to-implant contact (BIC) was determined histomorphometrically. Radiography revealed comparable implant ingrowth after 1 and 2 months for both implant materials. The pull-out force of P2000 tended to be higher than that for titanium at day 28 (p = .076) but the values were comparable at day 56 (p = .905). At day 56, implant fixation was significantly increased compared to the day of surgery for both, P2000 (p = .030) and for titanium alloy (p = .026). Microscopic examination revealed that both implant types appeared to be well integrated and firmly anchored in the bone. BIC ratio of titanium alloy tended to be higher at day 28 (p = .079) but they did not differ significantly at day 56 (p = .711). In the present rabbit femora defect model, the nickel-free stainless steel P2000 provides primary stability and osseointegration comparable to that of titanium alloy implants.
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Affiliation(s)
- Max Daniel Kauther
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Essen, Essen, Germany
| | - Kai Gödde
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Essen, Essen, Germany
| | - Manuel Burggraf
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Essen, Essen, Germany
| | - Gero Hilken
- Central Animal Laboratory, University Hospital Essen, Essen, Germany
| | - Andreas Wissmann
- Central Animal Laboratory, University Hospital Essen, Essen, Germany
| | - Christine Krüger
- Central Animal Laboratory, University Hospital Essen, Essen, Germany
| | - Sara Lask
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Essen, Essen, Germany
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Bojan Mitevski
- Department of Materials Science and Engineering, University of Duisburg-Essen, Germany
| | - Alfons Fischer
- Department of Materials Science and Engineering, University of Duisburg-Essen, Germany
| | - Marcel Dudda
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Essen, Essen, Germany
| | - Björn Behr
- Department of Plastic Surgery, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany
| | - Monika Herten
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Essen, Essen, Germany.,Universitätsklinikum Essen
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Lindner C, PrÖhl A, Abels M, LÖffler T, Batinic M, Jung O, Barbeck M. Specialized Histological and Histomorphometrical Analytical Methods for Biocompatibility Testing of Biomaterials for Maxillofacial Surgery in (Pre-) Clinical Studies. In Vivo 2020; 34:3137-3152. [PMID: 33144417 PMCID: PMC7811667 DOI: 10.21873/invivo.12148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 08/27/2020] [Accepted: 09/02/2020] [Indexed: 12/20/2022]
Abstract
Both preclinical in vivo experiments and clinical trials are indispensable for analysis of tissue reactions in evaluating the compatibility of biomaterials or medical devices, i.e. the cell types interacting with the material, integration or degradation behavior, implant bed vascularization and immunological response. In particular, both the histological workup (including the processes such as embedding, cutting, histochemical and immunohistochemical staining methods), as well as qualitative and quantitative analysis are crucial steps enabling the final evaluation of biocompatibility. We present a short overview of the most important steps of the different workup and analytical methods used in preclinical and clinical biopsies for both novice and experienced researchers in the field of biomaterial science.
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Affiliation(s)
| | | | | | | | | | - Ole Jung
- Clinic for Dermatology and Venereology, Rostock University Medical Center, Rostock, Germany
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31
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Emmert S, van Welzen A, Masur K, Gerling T, Bekeschus S, Eschenburg C, Wahl P, Bernhardt T, Schäfer M, Semmler ML, Grabow N, Fischer T, Thiem A, Jung O, Boeckmann L. Kaltes Atmosphärendruckplasma zur Behandlung akuter und chronischer Wunden. Hautarzt 2020; 71:855-862. [DOI: 10.1007/s00105-020-04696-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Jung O, Radenkovic M, Stojanović S, Lindner C, Batinic M, Görke O, Pissarek J, Pröhl A, Najman S, Barbeck M. In Vitro and In Vivo Biocompatibility Analysis of a New Transparent Collagen-based Wound Membrane for Tissue Regeneration in Different Clinical Indications. In Vivo 2020; 34:2287-2295. [PMID: 32871752 DOI: 10.21873/invivo.12040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM For the treatment of different tissue defects such as jawbone defects, open wound defect, chronic ulcers, dura mater defects and corneal defects, different biomaterials are available. The use of collagen-based materials for these applications has been significantly increased over the past decades due to its excellent biocompatibility and degradability. However, no transparent collagen-based biomaterial is available until now. Thus, a newly developed transparent collagen membrane (TCM) based on natural derived porcine pericardium, which offers numerous application possibilities, was developed. The present study aimed to analyze the in vitro and in vivo biocompatibility using established methods. MATERIALS AND METHODS The new TCM membrane and a commercially available collagen membrane (CM, Jason membrane, botiss biomaterials GmbH, Zossen, Germany) were tested for its in vitro cytocompatibility. Furthermore, the in vivo biocompatibility was analyzed using sham operations as control group. In vitro, cytocompatibility was tested in accordance with EN ISO 10993-5/-12 regulations and Live-Dead-stainings. In vivo, a subcutaneous implantation model in BALB/c mice was used and explants were prepared for analyses by established histological, immunohistochemical and histomorphometrical methods. RESULTS In vitro, both membranes showed promising cytocompatibility with a slightly better direct cell response in the Live-Dead staining assay for the TCM. In vivo, TCM induced a comparable inflammatory immune response after 10 and 30 days with comparable numbers of M1- and M2-macrophages as also found in the control group without biomaterial insertion. CONCLUSION The newly transparent collagen membrane is fully biocompatible and is supporting safe clinical application in tissue repair and surgery.
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Affiliation(s)
- Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Rostock, Germany
| | - Milena Radenkovic
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Sanja Stojanović
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, Niš, Serbia
| | | | - Milijana Batinic
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, Berlin, Germany
| | - Oliver Görke
- Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, Berlin, Germany
| | | | | | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia.,Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Mike Barbeck
- BerlinAnalytix GmbH, Berlin, Germany .,Department of Ceramic Materials, Chair of Advanced Ceramic Materials, Institute for Materials Science and Technologies, Technical University Berlin, Berlin, Germany
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Boeckmann L, Bernhardt T, Schäfer M, Semmler ML, Glatzel A, Martens MC, Ulrich M, Thiem A, Tietze J, Jung O, Panzer R, Fischer T, Emmert S. Experimentelle Forschung an der Klinik und Poliklinik für Dermatologie und Venerologie. Aktuelle Dermatologie 2020. [DOI: 10.1055/a-1147-5015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
ZusammenfassungSeit Antritt von Prof. Dr. med. Steffen Emmert als Ordinarius der Klinik und Poliklinik für Dermatologie und Venerologie im Jahr 2015 konnte das dermatologische Forschungslabor sukzessive aufgebaut und erweitert werden. Im Einklang mit dem onkologischen Schwerpunkt der Universitätsmedizin Rostock sowie dem von der Landesregierung forcierten „Gesundheitsland Mecklenburg-Vorpommern“ wird grundlagenorientierten und translationalen Projekten nachgegangen. Das vorwiegend drittmittelfinanzierte und stetig wachsende Forschungsteam bearbeitet diverse Fragestellungen in den Bereichen der Dermato-Onkologie, Plasmamedizin und seltenen Hauterkrankungen. Inzwischen auf einem soliden Fundament stehend, befindet sich der Forschungsbereich weiterhin in einem dynamischen Entwicklungsprozess. Nicht nur personell, sondern auch thematisch und methodisch wird er derzeit durch die Integration weiterer Arbeitsgruppen unter der Leitung von Ärzten aus der Klinik ergänzt und ausgebaut. Diverse Kollaborationen an der Universitätsmedizin Rostock und im Land zeugen von einem freundlichen, unterstützenden und kollegialen Umfeld, das die Integration am Standort befördert hat.
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Affiliation(s)
- L. Boeckmann
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - T. Bernhardt
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - M. Schäfer
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - M. L. Semmler
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - A. Glatzel
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - M. C. Martens
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - M. Ulrich
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - A. Thiem
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - J. Tietze
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - O. Jung
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - R. Panzer
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - T. Fischer
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
| | - S. Emmert
- Klinik und Poliklinik für Dermatologie und Venerologie, Universitätsmedizin Rostock
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Flaig I, Radenković M, Najman S, Pröhl A, Jung O, Barbeck M. In Vivo Analysis of the Biocompatibility and Immune Response of Jellyfish Collagen Scaffolds and its Suitability for Bone Regeneration. Int J Mol Sci 2020; 21:E4518. [PMID: 32630456 PMCID: PMC7350248 DOI: 10.3390/ijms21124518] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022] Open
Abstract
Jellyfish collagen, which can be defined as "collagen type 0" due to its homogeneity to the mammalian types I, II, III, V, and IX and its batch-to-batch consistent producibility, is of special interest for different medical applications related to (bone) tissue regeneration as an alternative to mammalian collagen-based biomaterials. However, no in vivo studies regarding the induction of M1- and M2-macrophages and their time-dependent ration as well as the analysis of the bone regeneration capacity of jellyfish collagen scaffolds have been conducted until now. Thus, the goal of this study was to determine the nature of the immune response to jellyfish collagen scaffolds and their bone healing capacities. Two in vivo studies using established implantation models, i.e., the subcutaneous and the calvarian implantation model in Wistar rats, were conducted. Furthermore, specialized histological, histopathological, and histomorphometrical methods have been used. As a control biomaterial, a collagen scaffold, originating from porcine pericardium, which has already been stated as biocompatible, was used for the subcutaneous study. The results of the present study show that jellyfish collagen scaffolds are nearly completely resorbed until day 60 post implantation by stepwise integration within the subcutaneous connective tissue mediated mainly by macrophages and single multinucleated giant cells. Interestingly, the degradation process ended in a vessel rich connective tissue that is understood to be an optimal basis for tissue regeneration. The study results showed an overall weaker immune response to jellyfish collagen than to porcine pericardium matrices by the induction of significantly lower numbers of macrophages together with a more balanced occurrence of M1- and M2-macrophages. However, both collagen-based biomaterials induced balanced numbers of both macrophage subtypes, which supports their good biocompatibility. Moreover, the histomorphometrical results for the calvarial implantation of the jellyfish scaffolds revealed an average of 46.20% de novo bone formation at day 60, which was significantly higher compared to the control group. Thereby, the jellyfish collagen scaffolds induced also significantly higher numbers of anti-inflammatory macrophages within the bony implantation beds. Altogether, the results show that the jellyfish collagen scaffolds allowed for a directed integration behavior, which is assumed to be in accordance with the concept of Guided Bone Regeneration (GBR). Furthermore, the jellyfish collagen scaffolds induced a long-term anti-inflammatory macrophage response and an optimal vascularization pattern within their implant beds, thus showing excellent biocompatibility and (bone) tissue healing properties.
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Affiliation(s)
- Iris Flaig
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (I.F.); (A.P.)
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18108 Niš, Serbia;
| | - Stevo Najman
- Department for Cell and Tissue Engineering and Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18108 Niš, Serbia;
| | - Annica Pröhl
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (I.F.); (A.P.)
| | - Ole Jung
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Mike Barbeck
- BerlinAnalytix GmbH, 12109 Berlin, Germany; (I.F.); (A.P.)
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Barbeck M, Kühnel L, Witte F, Pissarek J, Precht C, Xiong X, Krastev R, Wegner N, Walther F, Jung O. Degradation, Bone Regeneration and Tissue Response of an Innovative Volume Stable Magnesium-Supported GBR/GTR Barrier Membrane. Int J Mol Sci 2020; 21:ijms21093098. [PMID: 32353983 PMCID: PMC7247710 DOI: 10.3390/ijms21093098] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022] Open
Abstract
Introduction: Bioresorbable collagenous barrier membranes are used to prevent premature soft tissue ingrowth and to allow bone regeneration. For volume stable indications, only non-absorbable synthetic materials are available. This study investigates a new bioresorbable hydrofluoric acid (HF)-treated magnesium (Mg) mesh in a native collagen membrane for volume stable situations. Materials and Methods: HF-treated and untreated Mg were compared in direct and indirect cytocompatibility assays. In vivo, 18 New Zealand White Rabbits received each four 8 mm calvarial defects and were divided into four groups: (a) HF-treated Mg mesh/collagen membrane, (b) untreated Mg mesh/collagen membrane (c) collagen membrane and (d) sham operation. After 6, 12 and 18 weeks, Mg degradation and bone regeneration was measured using radiological and histological methods. Results: In vitro, HF-treated Mg showed higher cytocompatibility. Histopathologically, HF-Mg prevented gas cavities and was degraded by mononuclear cells via phagocytosis up to 12 weeks. Untreated Mg showed partially significant more gas cavities and a fibrous tissue reaction. Bone regeneration was not significantly different between all groups. Discussion and Conclusions: HF-Mg meshes embedded in native collagen membranes represent a volume stable and biocompatible alternative to the non-absorbable synthetic materials. HF-Mg shows less corrosion and is degraded by phagocytosis. However, the application of membranes did not result in higher bone regeneration.
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Affiliation(s)
- Mike Barbeck
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
- Correspondence: ; Tel.: +49-(0)-176-81022467
| | - Lennart Kühnel
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Frank Witte
- Biotrics Bioimplants GmbH, 12109 Berlin, Germany
| | | | - Clarissa Precht
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | - Rumen Krastev
- NMI Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
- Faculty of Applied Chemistry, Reutlingen University, 72762 Reutlingen, Germany
| | - Nils Wegner
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany
| | - Frank Walther
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany
| | - Ole Jung
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, Study Group: Biomaterials/Surfaces, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany
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Kapogianni E, Barbeck M, Jung O, Arslan A, Kuhnel L, Xiong X, Krastev R, Friedrich RE, Schnettler R, Fienitz T, Rothamel D. Comparison of Material-mediated Bone Regeneration Capacities of Sintered and Non-sintered Xenogeneic Bone Substitutes via 2D and 3D Data. In Vivo 2020; 33:2169-2179. [PMID: 31662553 DOI: 10.21873/invivo.11719] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/15/2019] [Accepted: 09/16/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND/AIM The aim of this study was the development of a new osteoconductivity index to determine the bone healing capacities of bone substitute materials (BSM) on the basis of 3D microcomputed tomographic (μ-CT) data. MATERIALS AND METHODS Sinus biopsies were used for the comparative analysis of the integration behavior of two xenogeneic BSM (cerabone® and Bio-Oss®). 3D μ-CT and data sets from histomorphometrical measurements based on 2D histological slices were used to measure the bone-material-contact and the tissue distribution within the biopsies. The tissue reactions to both BSM were microscopically analyzed. RESULTS The 3D and 2D results of the osteoconductivity measurements showed comparable material-bone contacts for both BSM, but the 2D data were significantly lower. The same results were found when tissue distribution was measured in both groups. The histopathological analysis showed comparative tissue reactions in both BSM. CONCLUSION Osteoconductivity index is a reliable measurement parameter for determining the healing capacities of BSM. The observed differences between both measurement methods could be assigned to the resolution capacity of μ-CT data that did not allow for a precise interface distinction between both BSM and bone tissue. Histomorphometrical data based on histological slides still allow for a more exact evaluation.
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Affiliation(s)
- Eleni Kapogianni
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Mike Barbeck
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany .,BerlinAnalytix GmbH, Berlin, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany.,BerlinAnalytix GmbH, Berlin, Germany
| | | | - Lennart Kuhnel
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Xin Xiong
- Natural and Medical Sciences Institute, University of Tübingen, Reutlingen, Germany
| | - Rumen Krastev
- Natural and Medical Sciences Institute, University of Tübingen, Reutlingen, Germany.,Department of Intelligent Surfaces, Faculty of Applied Chemistry, Reutlingen University, Reutlingen, Germany
| | - Reinhard E. Friedrich
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Reinhard Schnettler
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Fienitz
- Department of Oral and Maxillofacial Plastic Surgery, Evangelic Johanniter Hospital Bethesda Mönchengladbach, Mönchengladbach, Germany
| | - Daniel Rothamel
- Department of Oral and Maxillofacial Plastic Surgery, Evangelic Johanniter Hospital Bethesda Mönchengladbach, Mönchengladbach, Germany.,Department of Oral and Maxillofacial Plastic Surgery, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany
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Kopp A, Derra T, Müther M, Jauer L, Schleifenbaum JH, Voshage M, Jung O, Smeets R, Kröger N. Influence of design and postprocessing parameters on the degradation behavior and mechanical properties of additively manufactured magnesium scaffolds. Acta Biomater 2019; 98:23-35. [PMID: 30959185 DOI: 10.1016/j.actbio.2019.04.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 03/08/2019] [Accepted: 04/03/2019] [Indexed: 12/15/2022]
Abstract
Magnesium shows promising properties concerning its use in absorbable implant applications such as biodegradability, improved mechanical strength and plastic deformability. Following extensive research, the first fixation and compression screws composed of magnesium rare earth alloys were commercialised, notably in the field of orthopaedic surgery. Preclinical and clinical follow-up studies showed that the rapid degradation of unprotected metallic Magnesium surfaces and concomitant hydrogen gas bursts still raise concern regarding certain surgical indications and need to be further improved. In order to enlarge the scope of further applications, the development of future magnesium implants must aim at freedom of design and reduction of volume, hereby enabling higher functionalised implants, as e.g. plate systems or scaffold grafts for bone replacement therapy. In order to overcome the boundaries of conventional manufacturing methods such as turning or milling, the process of Laser Powder Bed Fusion (LPBF) for magnesium alloys was recently introduced. It enables the production of lattice structures, therefore allowing for reduction of implant material volume. Nevertheless, the concomitant increase of free surface of such magnesium scaffolds further stresses the aforementioned disadvantages of vast degradation and early loss of mechanical stability if not prevented by suitable postprocessing methods. Magnesium scaffold structures with different pore sizes were therefore manufactured by LPBF and consequently further modified either by thermal heat treatment or Plasma Electrolytic Oxidation (PEO). Implant performance was assessed by conducting degradation studies and mechanical testing. PEO modified scaffolds with small pore sizes exhibited improved long-term stability, while heat treated specimens showed impaired performance regarding degradation and mechanical stability. STATEMENT OF SIGNIFICANCE: Magnesium based scaffold structures offer wide possibilities for advanced functionalized bioabsorbable implants. By implementing lattice structures, big implant sizes and mechanically optimized implant geometries can be achieved enabling full bone replacement or large-scale plate systems, e.g. for orthopedic applications. As shape optimization and lattice structuring of such scaffolds consequently lead to enlarged surface, suitable design and postprocessing routines come into focus. The presented study addresses these new and relevant topics for the first time by evaluating geometry as well as heat and surface treatment options as input parameters for improved chemical and mechanical stability. The outcome of these variations is measured by degradation tests and mechanical analysis. Evaluating these methods, a significant contribution to the development of absorbable magnesium scaffolds is made. The findings can help to better understand the interdependence of high surface to volume ratio Magnesium implants and to deliver methods to incorporate such lattice structures into future large-scale implant applications manufactured from bioabsorbable Magnesium alloys.
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Affiliation(s)
- Alexander Kopp
- Meotec GmbH & Co. KG, Philipsstr. 8, 52068 Aachen, Germany.
| | - Thomas Derra
- Meotec GmbH & Co. KG, Philipsstr. 8, 52068 Aachen, Germany
| | - Max Müther
- Meotec GmbH & Co. KG, Philipsstr. 8, 52068 Aachen, Germany
| | - Lucas Jauer
- Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074 Aachen, Germany
| | - Johannes H Schleifenbaum
- Fraunhofer Institute for Laser Technology ILT, Steinbachstr. 15, 52074 Aachen, Germany; Digital Additive Production DAP, RWTH Aachen University, Steinbachstr. 15, 52074 Aachen, Germany
| | - Maximilian Voshage
- Digital Additive Production DAP, RWTH Aachen University, Steinbachstr. 15, 52074 Aachen, Germany
| | - Ole Jung
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany
| | - Ralf Smeets
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany
| | - Nadja Kröger
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany
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Barbeck M, Jung O, Xiong X, Krastev R, Korzinskas T, Najman S, Radenković M, Wegner N, Knyazeva M, Walther F. Balancing Purification and Ultrastructure of Naturally Derived Bone Blocks for Bone Regeneration: Report of the Purification Effort of Two Bone Blocks. Materials (Basel) 2019; 12:ma12193234. [PMID: 31581651 PMCID: PMC6803862 DOI: 10.3390/ma12193234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 09/18/2019] [Accepted: 09/29/2019] [Indexed: 02/07/2023]
Abstract
The present publication reports the purification effort of two natural bone blocks, that is, an allogeneic bone block (maxgraft®, botiss biomaterials GmbH, Zossen, Germany) and a xenogeneic block (SMARTBONE®, IBI S.A., Mezzovico-Vira, Switzerland) in addition to previously published results based on histology. Furthermore, specialized scanning electron microscopy (SEM) and in vitro analyses (XTT, BrdU, LDH) for testing of the cytocompatibility based on ISO 10993-5/-12 have been conducted. The microscopic analyses showed that both bone blocks possess a trabecular structure with a lamellar subarrangement. In the case of the xenogeneic bone block, only minor remnants of collagenous structures were found, while in contrast high amounts of collagen were found associated with the allogeneic bone matrix. Furthermore, only island-like remnants of the polymer coating in case of the xenogeneic bone substitute seemed to be detectable. Finally, no remaining cells or cellular remnants were found in both bone blocks. The in vitro analyses showed that both bone blocks are biocompatible. Altogether, the purification level of both bone blocks seems to be favorable for bone tissue regeneration without the risk for inflammatory responses or graft rejection. Moreover, the analysis of the maxgraft® bone block showed that the underlying purification process allows for preserving not only the calcified bone matrix but also high amounts of the intertrabecular collagen matrix.
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Affiliation(s)
- Mike Barbeck
- Department of Oral and Maxillofacial Surgery, Working Group Biomaterials/Surfaces, University Hospital Hamburg-Eppendorf, Hamburg 20246, Germany; ole.tiberius.jung@googlemail@com (O.J.).
- BerlinAnalytix GmbH, Berlin 12109, Germany.
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Working Group Biomaterials/Surfaces, University Hospital Hamburg-Eppendorf, Hamburg 20246, Germany; ole.tiberius.jung@googlemail@com (O.J.).
| | - Xin Xiong
- NMI, Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen 72770, Germany.
| | - Rumen Krastev
- Faculty of Applied Chemistry, Reutlingen University, Reutlingen 72770, Germany.
| | - Tadas Korzinskas
- Department of Oral and Maxillofacial Surgery, Working Group Biomaterials/Surfaces, University Hospital Hamburg-Eppendorf, Hamburg 20246, Germany; ole.tiberius.jung@googlemail@com (O.J.).
| | - Stevo Najman
- Department for Cell and Tissue Engineering and Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18100 Niš, Serbia.
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, Niš 18100, Serbia.
| | - Nils Wegner
- Department of Materials Test Engineering (WPT), TU Dortmund University, Dortmund 44227, Germany.
| | - Marina Knyazeva
- Department of Materials Test Engineering (WPT), TU Dortmund University, Dortmund 44227, Germany.
| | - Frank Walther
- Department of Materials Test Engineering (WPT), TU Dortmund University, Dortmund 44227, Germany.
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Jung O, Porchetta D, Schroeder ML, Klein M, Wegner N, Walther F, Feyerabend F, Barbeck M, Kopp A. In Vivo Simulation of Magnesium Degradability Using a New Fluid Dynamic Bench Testing Approach. Int J Mol Sci 2019; 20:ijms20194859. [PMID: 31574947 PMCID: PMC6801401 DOI: 10.3390/ijms20194859] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 09/21/2019] [Accepted: 09/23/2019] [Indexed: 12/12/2022] Open
Abstract
The degradation rate of magnesium (Mg) alloys is a key parameter to develop Mg-based biomaterials and ensure in vivo-mechanical stability as well as to minimize hydrogen gas production, which otherwise can lead to adverse effects in clinical applications. However, in vitro and in vivo results of the same material often differ largely. In the present study, a dynamic test bench with several single bioreactor cells was constructed to measure the volume of hydrogen gas which evolves during magnesium degradation to indicate the degradation rate in vivo. Degradation medium comparable with human blood plasma was used to simulate body fluids. The media was pumped through the different bioreactor cells under a constant flow rate and 37 °C to simulate physiological conditions. A total of three different Mg groups were successively tested: Mg WE43, and two different WE43 plasma electrolytically oxidized (PEO) variants. The results were compared with other methods to detect magnesium degradation (pH, potentiodynamic polarization (PDP), cytocompatibility, SEM (scanning electron microscopy)). The non-ceramized specimens showed the highest degradation rates and vast standard deviations. In contrast, the two PEO samples demonstrated reduced degradation rates with diminished standard deviation. The pH values showed above-average constant levels between 7.4–7.7, likely due to the constant exchange of the fluids. SEM revealed severe cracks on the surface of WE43 after degradation, whereas the ceramized surfaces showed significantly decreased signs of corrosion. PDP results confirmed the improved corrosion resistance of both PEO samples. While WE43 showed slight toxicity in vitro, satisfactory cytocompatibility was achieved for the PEO test samples. In summary, the dynamic test bench constructed in this study enables reliable and simple measurement of Mg degradation to simulate the in vivo environment. Furthermore, PEO treatment of magnesium is a promising method to adjust magnesium degradation.
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Affiliation(s)
- Ole Jung
- Department of Oral Maxillofacial Surgery, University Medical Center, 20246 Hamburg-Eppendorf, Germany.
| | - Dario Porchetta
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany.
- Meotec GmbH, 52068 Aachen, Germany.
| | - Marie-Luise Schroeder
- Department of Oral Maxillofacial Surgery, University Medical Center, 20246 Hamburg-Eppendorf, Germany.
| | - Martin Klein
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany.
| | - Nils Wegner
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany.
| | - Frank Walther
- Department of Materials Test Engineering (WPT), TU Dortmund University, 44227 Dortmund, Germany.
| | - Frank Feyerabend
- Institute of Materials Research, Division Metallic Biomaterials, Helmholtz-Zentrum Geesthacht, 21502 Geesthacht, Germany.
| | - Mike Barbeck
- Department of Oral Maxillofacial Surgery, University Medical Center, 20246 Hamburg-Eppendorf, Germany.
- BerlinAnalytix GmbH, 12109 Berlin, Germany.
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Perić Kačarević Ž, Rider P, Alkildani S, Retnasingh S, Pejakić M, Schnettler R, Gosau M, Smeets R, Jung O, Barbeck M. An introduction to bone tissue engineering. Int J Artif Organs 2019; 43:69-86. [PMID: 31544576 DOI: 10.1177/0391398819876286] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Bone tissue has the capability to regenerate itself; however, defects of a critical size prevent the bone from regenerating and require additional support. To aid regeneration, bone scaffolds created out of autologous or allograft bone can be used, yet these produce problems such as fast degradation rates, reduced bioactivity, donor site morbidity or the risk of pathogen transmission. The development of bone tissue engineering has been used to create functional alternatives to regenerate bone. This can be achieved by producing bone tissue scaffolds that induce osteoconduction and integration, provide mechanical stability, and either integrate into the bone structure or degrade and are excreted by the body. A range of different biomaterials have been used to this end, each with their own advantages and disadvantages. This review will introduce the requirements of bone tissue engineering, beginning with the regeneration process of bone before exploring the requirements of bone tissue scaffolds. Aspects covered include the manufacturing process as well as the different materials used and the incorporation of bioactive molecules, growth factors and cells.
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Affiliation(s)
- Željka Perić Kačarević
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Patrick Rider
- Research and Development, botiss biomaterials GmbH, Berlin, Germany
| | - Said Alkildani
- Department of Biomedical Engineering, School of Applied Medical Sciences, German Jordanian University, Amman, Jordan
| | - Sujith Retnasingh
- Institute for Environmental Toxicology, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - Marija Pejakić
- Department of Dental Medicine, Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Reinhard Schnettler
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Martin Gosau
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany.,Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mike Barbeck
- Research and Development, botiss biomaterials GmbH, Berlin, Germany.,Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, Hamburg, Germany.,BerlinAnalytix GmbH, Berlin, Germany
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41
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Kühnel L, Barbeck M, Smeets R, Gosau M, Jung O. Hydrofluoric acid treatment prevents premature hydrogen release of Mg in volume‐stable GBR membrane. Clin Oral Implants Res 2019. [DOI: 10.1111/clr.182_13509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lennart Kühnel
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial
| | - Mike Barbeck
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial
| | - Ralf Smeets
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial
| | - Martin Gosau
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial
| | - Ole Jung
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial
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42
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Tanaskovic N, Trajkovski B, Perić Kačarević Ž, Rider PM, Houshmand A, Xiong X, Jung O, Barbeck M. Periorbital Reconstruction by "Periorbital Patch" Technique Using a Pericardium-Based Collagen Membrane and Titanium Mesh. Materials (Basel) 2019; 12:ma12152343. [PMID: 31344797 PMCID: PMC6696015 DOI: 10.3390/ma12152343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/06/2019] [Accepted: 07/17/2019] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Titanium mesh is a commonly used material for the reconstruction of orbital floor fractures. However, in some instances, a subsequent inflammatory reaction can occur that causes the adhesion of orbital tissue to the titanium mesh. The adhesion of the orbital soft tissue to the mesh causes diplopia, lid rigidity and extraocular movements restriction. This study was performed to determine if the placement of a collagen membrane over a titanium mesh can prevent the adhesion of orbital soft tissue for an improved clinical outcome. Clinical considerations: A case study was performed investigating 106 patients undergoing a periorbital restoration. Seventy-two patients received a titanium mesh without a barrier membrane, 12 patients received a barrier membrane composed of autologous auricular cartilage to provide a barrier function and 22 patients received a pericardium collagen membrane and titanium mesh. CONCLUSIONS Titanium has been shown to generate an intense inflammatory reaction in host tissues, which can cause fibrosis to adjacent structures. Fibrosis is an essential factor in the repair of fracture sites, however this can lead to adverse effects in the orbital socket. Fibrosis can cause cicatrization and lower eyelid retraction when induced along the lower orbital rim. An improved outcome can be achieved by using a barrier between the titanium mesh and the soft tissue, such as autogenous auricular cartilage, however, only patients treated with a resorbable collagen membrane to act as a soft tissue barricade during site regeneration, prevented the fibrosis reaction and related problems from occurring.
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Affiliation(s)
- Nenad Tanaskovic
- Clinic of Maxillofacial Surgery, Clinical Centre, 78000 Banja Luka, Herzegovina.
| | - Branko Trajkovski
- Wound Healing and Oral Diagnostic Research Group, College of Dental Medicine, University of Sharjah, 27272 Sharja, UAE
- Botiss Biomaterials GmbH, 15806 Zossen, Germany
| | - Željka Perić Kačarević
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia
| | | | - Alireza Houshmand
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia
| | - Xin Xiong
- Natural and Medical Sciences Institute, University of Tübingen, 72770 Reutlingen, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Mike Barbeck
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany
- BerlinAnalytix GmbH, 12109 Berlin, Germany
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Jung O, Becker JP, Smeets R, Gosau M, Becker G, Kahl-Nieke B, Jung AK, Heiland M, Kopp A, Barbeck M, Koehne T. Surface Characteristics of Esthetic Nickel⁻Titanium and Beta-Titanium Orthodontic Archwires Produced by Plasma Electrolytic Oxidation (PEO)-Primary Results. Materials (Basel) 2019; 12:ma12091403. [PMID: 31052150 PMCID: PMC6539843 DOI: 10.3390/ma12091403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 11/21/2022]
Abstract
Background/Aim: There is continuing interest in engineering esthetic labial archwires. The aim of this study was to coat nickel–titanium (NiTi) and beta-titanium (β-Ti), also known as titanium molybdenum (TMA), archwires by plasma electrolytic oxidation (PEO) and to analyze the characteristics of the PEO-surfaces. Materials and Methods: PEO-coatings were generated on 0.014-inch NiTi and 0.19 × 0.25-inch β-Ti archwires. The surfaces were analyzed by scanning electron microscopy and stereomicroscopy. Cytocompatibility testing was performed with ceramized and untreated samples according to EN ISO 10993-5 in XTT-, BrdU- and LDH-assays. The direct cell impact was analyzed using LIVE-/DEAD-staining. In addition, the archwires were inserted in an orthodontic model and photographs were taken before and after insertion. Results: The PEO coatings were 15 to 20 µm thick with a whitish appearance. The cytocompatibility analysis revealed good cytocompatibility results for both ceramized NiTi and β-Ti archwires. In the direct cell tests, the ceramized samples showed improved compatibility as compared to those of uncoated samples. However, bending of the archwires resulted in loss of the PEO-surfaces. Nevertheless, it was possible to insert the β-Ti PEO-coated archwire in an orthodontic model without loss of the PEO-ceramic. Conclusion: PEO is a promising technique for the generation of esthetic orthodontic archwires. Since the PEO-coating does not resist bending, its clinical use seems to be limited so far to orthodontic techniques using straight or pre-bent archwires.
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Affiliation(s)
- Ole Jung
- Division of Regenerative Orofacial Medicine, Research Group Biomaterials/Surfaces, Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Jean-Philippe Becker
- Division of Regenerative Orofacial Medicine, Research Group Biomaterials/Surfaces, Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Ralf Smeets
- Division of Regenerative Orofacial Medicine, Research Group Biomaterials/Surfaces, Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Martin Gosau
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Germain Becker
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Bärbel Kahl-Nieke
- Department of Orthodontics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Anne-Kathrin Jung
- Division of Regenerative Orofacial Medicine, Research Group Biomaterials/Surfaces, Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Max Heiland
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Department of Oral and Maxillofacial Surgery, 12200 Berlin, Germany.
| | | | - Mike Barbeck
- Division of Regenerative Orofacial Medicine, Research Group Biomaterials/Surfaces, Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Till Koehne
- Department of Orthodontics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
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Sieger D, Korzinskas T, Jung O, Stojanovic S, Wenisch S, Smeets R, Gosau M, Schnettler R, Najman S, Barbeck M. The Addition of High Doses of Hyaluronic Acid to a Biphasic Bone Substitute Decreases the Proinflammatory Tissue Response. Int J Mol Sci 2019; 20:E1969. [PMID: 31013636 PMCID: PMC6515558 DOI: 10.3390/ijms20081969] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/20/2019] [Accepted: 04/21/2019] [Indexed: 02/06/2023] Open
Abstract
Biphasic bone substitutes (BBS) are currently well-established biomaterials. Through their constant development, even natural components like hyaluronic acid (HY) have been added to improve both their handling and also their regenerative properties. However, little knowledge exists regarding the consequences of the addition of HY to their biocompatibility and the inflammatory tissue reactions. Thus, the present study was conducted, aiming to analyze the influence of two different amounts of high molecular weight HY (HMWHY), combined with a BBS, on in vitro biocompatibility and in vivo tissue reaction. Established in vitro procedures, using L929 cells, were used for cytocompatibility analyses under the test conditions of DIN EN:ISO 10993-5. For the in vivo part of the study, calvarial defects were created in 20 Wistar rats and subsequently filled with BBS, and BBS combined with two different HMWHY amounts, i.e., BBS + HY(L) and BBS + HY(H). As controls, empty defects were used. Established histological, immunohistochemical, and histomorphometrical methods were applied to analyze the tissue reactions to the three different materials, including the induction of pro- and anti-inflammatory macrophages and multinucleated giant cells (BMGCs). The in vitro results showed that none of the materials or compositions caused biological damage to the L929 cells and can be considered to be non-toxic. The in vivo results showed that only the addition of high doses of HY to a biphasic bone substitute significantly decreases the occurrence of pro-inflammatory macrophages (* p < 0.05), comparable to the numbers found in the control group, while no significant differences within the three study groups for M2-macrophages nor BMGCs were detected. In conclusion, the addition of different amounts of HMWHY does not seem to affect the inflammation response to BBS, while improving the material handling properties.
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Affiliation(s)
- Dominik Sieger
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Tadas Korzinskas
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Sanja Stojanovic
- Department for Cell and Tissue Engineering, Institute of Biology and Human Genetics, University of Niš, Faculty of Medicine, Niš 18106, Serbia.
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, 35392 Giessen, Germany.
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- Department of Oral Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Martin Gosau
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- Department of Oral Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Reinhard Schnettler
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- Department of Oral Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Institute of Biology and Human Genetics, University of Niš, Faculty of Medicine, Niš 18106, Serbia.
| | - Mike Barbeck
- Department of Oral and Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- BerlinAnalytix GmbH, 12109 Berlin, Germany.
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Becerikli M, Jaurich H, Wallner C, Wagner JM, Dadras M, Jettkant B, Pöhl F, Seifert M, Jung O, Mitevski B, Karkar A, Lehnhardt M, Fischer A, Kauther MD, Behr B. P2000 - A high-nitrogen austenitic steel for application in bone surgery. PLoS One 2019; 14:e0214384. [PMID: 30913254 PMCID: PMC6435142 DOI: 10.1371/journal.pone.0214384] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/12/2019] [Indexed: 12/25/2022] Open
Abstract
Optimal treatment of bone fractures with minimal complications requires implant alloys that combine high strength with high ductility. Today, TiAl6V4 titanium and 316L steel are the most applied alloys in bone surgery, whereas both share advantages and disadvantages. The nickel-free, high-nitrogen austenitic steel X13CrMnMoN18-14-3 (1.4452, brand name: P2000) exhibits high strength in combination with superior ductility. In order to compare suitable alloys for bone implants, we investigated titanium, 316L steel, CoCrMo and P2000 for their biocompatibility and hemocompatibility (according to DIN ISO 10993-5 and 10993-4), cell metabolism, mineralization of osteoblasts, electrochemical and mechanical properties. P2000 exhibited good biocompatibility of fibroblasts and osteoblasts without impairment in vitality or changing of cell morphology. Furthermore, investigation of the osteoblasts function by ALP activity and protein levels of the key transcription factor RUNX2 revealed 2x increased ALP activity and more than 4x increased RUNX2 protein levels for P2000 compared to titanium or 316 steel, respectively. Additionally, analyses of osteoblast biomineralization by Alizarin Red S staining exhibited more than 6x increased significant mineralization of osteoblasts grown on P2000 as compared to titanium. Further, P2000 showed no hemolytic effect and no significant influence on hemocompatibility. Nanoindentation hardness tests of Titanium and 316L specimens exposed an indentation hardness (HIT) of about 4 GPa, whereas CoCrMo and P2000 revealed HIT of 7.5 and 5.6 GPa, respectively. Moreover, an improved corrosion resistance of P2000 compared to 316L steel was observed. In summary, we could demonstrate that the nickel-free high-nitrogen steel P2000 appears to be a promising alternative candidate for applications in bone surgery. As to nearly all aspects like biocompatibility and hemocompatibility, cell metabolism, mineralization of osteoblasts and mechanical properties, P2000 was similar to or revealed advantages against titanium, 316L or CoCrMo.
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Affiliation(s)
- Mustafa Becerikli
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Henriette Jaurich
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Christoph Wallner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Johannes Maximilian Wagner
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Mehran Dadras
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Birger Jettkant
- Department of General and Trauma Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Fabian Pöhl
- Chair of Materials Technology, Ruhr-University Bochum, Bochum, Germany
| | - Merlin Seifert
- Chair of Materials Technology, Ruhr-University Bochum, Bochum, Germany
| | - Ole Jung
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Bojan Mitevski
- Department of Materials Science and Engineering, University of Duisburg-Essen, Duisburg, Germany
| | - Ahmet Karkar
- Department of Materials Science and Engineering, University of Duisburg-Essen, Duisburg, Germany
| | - Marcus Lehnhardt
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
| | - Alfons Fischer
- Department of Materials Science and Engineering, University of Duisburg-Essen, Duisburg, Germany
| | - Max Daniel Kauther
- Departmen of Orthopaedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Björn Behr
- Department of Plastic and Reconstructive Surgery, BG University Hospital Bergmannsheil, Ruhr-University Bochum, Bochum, Germany
- * E-mail:
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Blume O, Back M, Born T, Smeets R, Jung O, Barbeck M. Cover Image, Volume 30, Issue 6. J ESTHET RESTOR DENT 2019. [DOI: 10.1111/jerd.12444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kačarević ŽP, Rider PM, Alkildani S, Retnasingh S, Smeets R, Jung O, Ivanišević Z, Barbeck M. An Introduction to 3D Bioprinting: Possibilities, Challenges and Future Aspects. Materials (Basel) 2018; 11:E2199. [PMID: 30404222 PMCID: PMC6266989 DOI: 10.3390/ma11112199] [Citation(s) in RCA: 192] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/01/2018] [Accepted: 11/02/2018] [Indexed: 12/14/2022]
Abstract
Bioprinting is an emerging field in regenerative medicine. Producing cell-laden, three-dimensional structures to mimic bodily tissues has an important role not only in tissue engineering, but also in drug delivery and cancer studies. Bioprinting can provide patient-specific spatial geometry, controlled microstructures and the positioning of different cell types for the fabrication of tissue engineering scaffolds. In this brief review, the different fabrication techniques: laser-based, extrusion-based and inkjet-based bioprinting, are defined, elaborated and compared. Advantages and challenges of each technique are addressed as well as the current research status of each technique towards various tissue types. Nozzle-based techniques, like inkjet and extrusion printing, and laser-based techniques, like stereolithography and laser-assisted bioprinting, are all capable of producing successful bioprinted scaffolds. These four techniques were found to have diverse effects on cell viability, resolution and print fidelity. Additionally, the choice of materials and their concentrations were also found to impact the printing characteristics. Each technique has demonstrated individual advantages and disadvantages with more recent research conduct involving multiple techniques to combine the advantages of each technique.
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Affiliation(s)
- Željka P Kačarević
- Department of Anatomy Histology, Embryology, Pathology Anatomy and Pathology Histology, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia.
| | | | - Said Alkildani
- Department of Biomedical Engineering, Faculty of Applied Medical Sciences, German-Jordanian University, 11180 Amman, Jordan.
| | - Sujith Retnasingh
- Institute for Environmental Toxicology, Martin-Luther-Universität, Halle-Wittenberg and Faculty of Biomedical Engineering, Anhalt University of Applied Science, 06366 Köthen, Germany.
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Ole Jung
- Department of Oral Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Zrinka Ivanišević
- Department of Dental Medicine, Faculty of Dental Medicine and Health, University of Osijek, 31000 Osijek, Croatia.
| | - Mike Barbeck
- Botiss Biomaterials, Hauptstraße 28, 15806 Zossen, Germany.
- Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- BerlinAnalytix GmbH, 12109 Berlin, Germany.
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Korzinskas T, Jung O, Smeets R, Stojanovic S, Najman S, Glenske K, Hahn M, Wenisch S, Schnettler R, Barbeck M. In Vivo Analysis of the Biocompatibility and Macrophage Response of a Non-Resorbable PTFE Membrane for Guided Bone Regeneration. Int J Mol Sci 2018; 19:E2952. [PMID: 30262765 PMCID: PMC6213856 DOI: 10.3390/ijms19102952] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 01/12/2023] Open
Abstract
The use of non-resorbable polytetrafluoroethylene (PTFE) membranes is indicated for the treatment of large, non-self-containing bone defects, or multi-walled defects in the case of vertical augmentations. However, less is known about the molecular basis of the foreign body response to PTFE membranes. In the present study, the inflammatory tissue responses to a novel high-density PTFE (dPTFE) barrier membrane have preclinically been evaluated using the subcutaneous implantation model in BALB/c mice by means of histopathological and histomorphometrical analysis methods and immunohistochemical detection of M1- and M2-macrophages. A collagen membrane was used as the control material. The results of the present study demonstrate that the tissue response to the dPTFE membrane involves inflammatory macrophages, but comparable cell numbers were also detected in the implant beds of the control collagen membrane, which is known to be biocompatible. Although these data indicate that the analyzed dPTFE membrane is not fully bioinert, but its biocompatibility is comparable to collagen-based membranes. Based on its optimal biocompatibility, the novel dPTFE barrier membrane may optimally support bone healing within the context of guided bone regeneration (GBR).
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Affiliation(s)
- Tadas Korzinskas
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Ole Jung
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Ralf Smeets
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Sanja Stojanovic
- Institute of Biology and Human Genetics, Department for Cell and Tissue Engineering, University of Niš, Faculty of Medicine, 18106 Niš, Serbia.
| | - Stevo Najman
- Institute of Biology and Human Genetics, Department for Cell and Tissue Engineering, University of Niš, Faculty of Medicine, 18106 Niš, Serbia.
| | - Kristina Glenske
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, 35390 Giessen, Germany.
| | - Michael Hahn
- Department of Osteology and Biomechanics, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, 35390 Giessen, Germany.
| | - Reinhard Schnettler
- University Medical Center, Justus Liebig University of Giessen, 35390 Giessen, Germany.
| | - Mike Barbeck
- Section for Regenerative Orofacial Medicine, Department of Oral and Maxillofacial Surgery, University Hospital Hamburg-Eppendorf, 20246 Hamburg, Germany.
- BerlinAnalytix GmbH, 12109 Berlin, Germany.
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Hartjen P, Hoffmann A, Henningsen A, Barbeck M, Kopp A, Kluwe L, Precht C, Quatela O, Gaudin R, Heiland M, Friedrich RE, Knipfer C, Grubeanu D, Smeets R, Jung O. Plasma Electrolytic Oxidation of Titanium Implant Surfaces: Microgroove-Structures Improve Cellular Adhesion and Viability. ACTA ACUST UNITED AC 2018; 32:241-247. [PMID: 29475905 DOI: 10.21873/invivo.11230] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND/AIM Plasma electrolytic oxidation (PEO) is an established electrochemical treatment technique that can be used for surface modifications of metal implants. In this study we to treated titanium implants with PEO, to examine the resulting microstructure and to characterize adhesion and viability of cells on the treated surfaces. Our aim was to identify an optimal surface-modification for titanium implants in order to improve soft-tissue integration. MATERIALS AND METHODS Three surface-variants were generated on titanium alloy Ti6Al4V by PEO-treatment. The elemental composition and the microstructures of the surfaces were characterized using energy dispersive X-ray spectroscopy, scanning electron microscopy and profilometry. In vitro cytocompatibility of the surfaces was assessed by seeding L929 fibroblasts onto them and measuring the adhesion, viability and cytotoxicity of cells by means of live/dead staining, XTT assay and LDH assay. RESULTS Electron microscopy and profilometry revealed that the PEO-surface variants differed largely in microstructure/topography, porosity and roughness from the untreated control material as well as from one another. Roughness was generally increased after PEO-treatment. In vitro, PEO-treatment led to improved cellular adhesion and viability of cells accompanied by decreased cytotoxicity. CONCLUSION PEO-treatment provides a promising strategy to improve the integration of titanium implants with surrounding tissues.
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Affiliation(s)
- Philip Hartjen
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexia Hoffmann
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anders Henningsen
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mike Barbeck
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Lan Kluwe
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Clarissa Precht
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Olivia Quatela
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Robert Gaudin
- Department of Oral & Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Max Heiland
- Department of Oral & Maxillofacial Surgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Reinhard E Friedrich
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christian Knipfer
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ole Jung
- Department of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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50
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Giesenhagen B, Martin N, Donkiewicz P, Perić Kačarević Ž, Smeets R, Jung O, Schnettler R, Barbeck M. Vertical bone augmentation in a single-tooth gap with an allogenic bone ring: Clinical considerations. J ESTHET RESTOR DENT 2018; 30:480-483. [PMID: 30070751 DOI: 10.1111/jerd.12392] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 04/24/2018] [Accepted: 04/24/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The main objective of this case report is to introduce a one-stage bone block augmentation with a cylindrical freeze-dried bone allograft (FDBA) and simultaneous implantation for the reconstruction of a single-tooth bone defect. CLINICAL CONSIDERATIONS The report describes this method on the basis of radiographical and clinical images derived from a single patient. CONCLUSIONS The report demonstrates the time-saving and successful application of this treatment concept, which has the potential to increase patient satisfaction and comfort. CLINICAL SIGNIFICANCE The application of the presented technique enabled a prosthetic rehabilitation of the extracted tooth about 3 months earlier as compared to the conventional procedure, while demonstrating no compromises regarding clinical outcome, functionality and esthetics.
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Affiliation(s)
| | | | | | - Željka Perić Kačarević
- Department of anatomy histology and embryology, Faculty of dental medicine and health, University of Osijek, Osijek, Croatia
| | - Ralf Smeets
- Department of Oral Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Ole Jung
- Department of Oral Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | | | - Mike Barbeck
- Department of Oral Maxillofacial Surgery, Division for Regenerative Orofacial Medicine, University Hospital Hamburg-Eppendorf, Hamburg, Germany
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