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Dinić A, Nikolić V, Nikolić L, Ilić-Stojanović S, Najman S, Urošević M, Gajić I. Modified Sulfanilamide Release from Intelligent Poly( N-isopropylacrylamide) Hydrogels. Pharmaceutics 2023; 15:1749. [PMID: 37376197 DOI: 10.3390/pharmaceutics15061749] [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: 04/15/2023] [Revised: 06/01/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
The aim of this study was to examine homopolymeric poly(N-isopropylacrylamide), p(NIPAM), hydrogels cross-linked with ethylene glycol dimethacrylate as carriers for sulfanilamide. Using FTIR, XRD and SEM methods, structural characterization of synthesized hydrogels before and after sulfanilamide incorporation was performed. The residual reactants content was analyzed using the HPLC method. The swelling behavior of p(NIPAM) hydrogels of different crosslinking degrees was monitored in relation to the temperature and pH values of the surrounding medium. The effect of temperature, pH, and crosslinker content on the sulfanilamide release from hydrogels was also examined. The results of the FTIR, XRD, and SEM analysis showed that sulfanilamide is incorporated into the p(NIPAM) hydrogels. The swelling of p(NIPAM) hydrogels depended on the temperature and crosslinker content while pH had no significant effect. The sulfanilamide loading efficiency increased with increasing hydrogel crosslinking degree, ranging from 87.36% to 95.29%. The sulfanilamide release from hydrogels was consistent with the swelling results-the increase of crosslinker content reduced the amount of released sulfanilamide. After 24 h, 73.3-93.5% of incorporated sulfanilamide was released from the hydrogels. Considering the thermosensitivity of hydrogels, volume phase transition temperature close to the physiological temperature, and the satisfactory results achieved for sulfanilamide incorporation and release, it can be concluded that p(NIPAM) based hydrogels are promising carriers for sulfanilamide.
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Affiliation(s)
- Ana Dinić
- Faculty of Technology, University of Niš, Bulevar Oslobođenja 124, 16000 Leskovac, Serbia
| | - Vesna Nikolić
- Faculty of Technology, University of Niš, Bulevar Oslobođenja 124, 16000 Leskovac, Serbia
| | - Ljubiša Nikolić
- Faculty of Technology, University of Niš, Bulevar Oslobođenja 124, 16000 Leskovac, Serbia
| | | | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica 81, 18108 Niš, Serbia
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica 81, 18108 Niš, Serbia
| | - Maja Urošević
- Faculty of Technology, University of Niš, Bulevar Oslobođenja 124, 16000 Leskovac, Serbia
| | - Ivana Gajić
- Faculty of Technology, University of Niš, Bulevar Oslobođenja 124, 16000 Leskovac, Serbia
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2
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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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Fan L, Ren Y, Emmert S, Vučković I, Stojanovic S, Najman S, Schnettler R, Barbeck M, Schenke-Layland K, Xiong X. The Use of Collagen-Based Materials in Bone Tissue Engineering. Int J Mol Sci 2023; 24:ijms24043744. [PMID: 36835168 PMCID: PMC9963569 DOI: 10.3390/ijms24043744] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [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: 01/25/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
Synthetic bone substitute materials (BSMs) are becoming the general trend, replacing autologous grafting for bone tissue engineering (BTE) in orthopedic research and clinical practice. As the main component of bone matrix, collagen type I has played a critical role in the construction of ideal synthetic BSMs for decades. Significant strides have been made in the field of collagen research, including the exploration of various collagen types, structures, and sources, the optimization of preparation techniques, modification technologies, and the manufacture of various collagen-based materials. However, the poor mechanical properties, fast degradation, and lack of osteoconductive activity of collagen-based materials caused inefficient bone replacement and limited their translation into clinical reality. In the area of BTE, so far, attempts have focused on the preparation of collagen-based biomimetic BSMs, along with other inorganic materials and bioactive substances. By reviewing the approved products on the market, this manuscript updates the latest applications of collagen-based materials in bone regeneration and highlights the potential for further development in the field of BTE over the next ten years.
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Affiliation(s)
- Lu Fan
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
- Institute of Biomedical Engineering, Department of Medical Technologies and Regenerative Medicine, Medical Faculty, Eberhard Karls University of Tübingen, Silcherstr. 7/1, 72076 Tübingen, Germany
| | - Yanru Ren
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Strempelstraße 13, 18057 Rostock, Germany
| | - Steffen Emmert
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Strempelstraße 13, 18057 Rostock, Germany
| | - Ivica Vučković
- Department of Maxillofacial Surgery, Clinic for Dental Medicine, 18000 Niš, Serbia
| | - Sanja Stojanovic
- 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
| | - 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
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany
| | - Mike Barbeck
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, Strempelstraße 13, 18057 Rostock, Germany
- BerlinAnalytix GmbH, Ullsteinstraße 108, 12109 Berlin, Germany
| | - Katja Schenke-Layland
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
- Institute of Biomedical Engineering, Department of Medical Technologies and Regenerative Medicine, Medical Faculty, Eberhard Karls University of Tübingen, Silcherstr. 7/1, 72076 Tübingen, Germany
- Correspondence: (K.S.-L.); (X.X.); Tel.: +49-(0)-71215153010 (K.S.-L.); +49+(0)-71215153413 (X.X.)
| | - Xin Xiong
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
- Correspondence: (K.S.-L.); (X.X.); Tel.: +49-(0)-71215153010 (K.S.-L.); +49+(0)-71215153413 (X.X.)
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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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Janošević P, Stojanović S, Stojanović I, Janošević M, Najman S. Comparative In Vitro Biocompatibility Study of the Two Orthodontic Bonding Materials of Different Types. Polymers (Basel) 2022; 14:polym14224998. [PMID: 36433124 PMCID: PMC9698495 DOI: 10.3390/polym14224998] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/09/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022] Open
Abstract
In the present study, the in vitro biocompatibility and cell response to two commonly used orthodontic bonding materials of different types, one self-curing and one light-curing, were examined and compared in indirect and direct cell culture systems. The study was conducted on fibroblasts and macrophages as in vitro models to study the biocompatibility of dental materials. Differences were found between the light- and self-curing material in cytotoxicity and effects on fibroblasts' proliferation in indirect cell culture systems as well as in macrophages response in vitro in both direct and indirect cell culture systems. Based on the obtained results, we can conclude that the self-curing material is generally more cytotoxic for fibroblasts compared to the light-curing, while macrophages' response to these materials was dependent on the macrophages' state and differed between the examined materials. This indicates that more attention should be paid when choosing and applying these materials in practice due to their toxicity to cells. Prior to their use, all aspects should be considered regarding the patient's conditions, associated problems, microenvironment in the oral cavity, etc. Further studies on in vivo models should be conducted to fully understand the potential long-term effects of the use of mentioned materials in orthodontics.
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Affiliation(s)
- Predrag Janošević
- Department of Orthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Sanja Stojanović
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Correspondence:
| | - Ivana Stojanović
- Department of Biochemistry, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Mirjana Janošević
- Department of Orthodontics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Stevo Najman
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
- Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia
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6
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Alfayez E, Veschini L, Dettin M, Zamuner A, Gaetani M, Carreca AP, Najman S, Ghanaati S, Coward T, Di Silvio L. DAR 16-II Primes Endothelial Cells for Angiogenesis Improving Bone Ingrowth in 3D-Printed BCP Scaffolds and Regeneration of Critically Sized Bone Defects. Biomolecules 2022; 12:biom12111619. [PMID: 36358970 PMCID: PMC9687468 DOI: 10.3390/biom12111619] [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: 09/19/2022] [Revised: 10/28/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022] Open
Abstract
Bone is a highly vascularized tissue and relies on the angiogenesis and response of cells in the immediate environmental niche at the defect site for regeneration. Hence, the ability to control angiogenesis and cellular responses during osteogenesis has important implications in tissue-engineered strategies. Self-assembling ionic-complementary peptides have received much interest as they mimic the natural extracellular matrix. Three-dimensional (3D)-printed biphasic calcium phosphate (BCP) scaffolds coated with self-assembling DAR 16-II peptide provide a support template with the ability to recruit and enhance the adhesion of cells. In vitro studies demonstrated prompt the adhesion of both human umbilical vein endothelial cells (HUVEC) and human mesenchymal stem cells (hMSC), favoring endothelial cell activation toward an angiogenic phenotype. The SEM-EDS and protein micro bicinchoninic acid (BCA) assays demonstrated the efficacy of the coating. Whole proteomic analysis of DAR 16-II-treated HUVECs demonstrated the upregulation of proteins involved in cell adhesion (HABP2), migration (AMOTL1), cytoskeletal re-arrangement (SHC1, TMOD2), immuno-modulation (AMBP, MIF), and morphogenesis (COL4A1). In vivo studies using DAR-16-II-coated scaffolds provided an architectural template, promoting cell colonization, osteogenesis, and angiogenesis. In conclusion, DAR 16-II acts as a proactive angiogenic factor when adsorbed onto BCP scaffolds and provides a simple and effective functionalization step to facilitate the translation of tailored 3D-printed BCP scaffolds for clinical applications.
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Affiliation(s)
- Eman Alfayez
- Faculty of Dentistry, Oral Biology Department, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Faculty of Dentistry, Oral & Craniofacial Sciences King’s College London, London SE1 9RT, UK
| | - Lorenzo Veschini
- Faculty of Dentistry, Oral & Craniofacial Sciences King’s College London, London SE1 9RT, UK
| | - Monica Dettin
- Department of Industrial Engineering, University of Padua, 35131 Padua, Italy
| | - Annj Zamuner
- Department of Civil, Environmental, and Architectural Engineering, University of Padua, 35131 Padua, Italy
| | - Massimiliano Gaetani
- Fondazione Ricerca nel Mediterraneo (Ri.MED) and Department of Laboratory Medicine and Advanced Biotechnologies, Istituto di Ricovero e Cura a Carattere Scientifico-Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, 90100 Palermo, Italy
- Chemical Proteomics, Department of Medical Biochemistry and Biophysics, Karolinska Institutet and SciLifeLab (Science for Life Laboratory), SE-17 177 Stockholm, Sweden
| | - Anna P. Carreca
- Fondazione Ricerca nel Mediterraneo (Ri.MED) and Department of Laboratory Medicine and Advanced Biotechnologies, Istituto di Ricovero e Cura a Carattere Scientifico-Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione, 90100 Palermo, Italy
| | - Stevo Najman
- Faculty of Medicine, University of Niš, 18000 Niš, Serbia
| | - Shahram Ghanaati
- Department for Oral, Cranio-Maxillofacial and Facial Plastic Surgery, Medical Center of the Goethe University, 60323 Frankfurt, Germany
| | - Trevor Coward
- Faculty of Dentistry, Oral & Craniofacial Sciences King’s College London, London SE1 9RT, UK
| | - Lucy Di Silvio
- Faculty of Dentistry, Oral & Craniofacial Sciences King’s College London, London SE1 9RT, UK
- Correspondence: ; Tel.: +44-02-07848-8475
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Hautmann A, Kedilaya D, Stojanović S, Radenković M, Marx CK, Najman S, Pietzsch M, Mano JF, Groth T. Free-standing multilayer films as growth factor reservoirs for future wound dressing applications. Biomater Adv 2022; 142:213166. [PMID: 36306555 DOI: 10.1016/j.bioadv.2022.213166] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/12/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Chronic skin wounds place a high burden on patients and health care systems. The use of angiogenic and mitogenic growth factors can facilitate the healing but growth factors are quickly inactivated by the wound environment if added exogenously. Here, free-standing multilayer films (FSF) are fabricated from chitosan and alginate as opposing polyelectrolytes in an alternating manner using layer-by-layer technique. One hundred bilayers form an about 450 μm thick, detachable free-standing film that is subsequently crosslinked by either ethyl (dimethylaminopropyl) carbodiimide combined with N-hydroxysuccinimide (E-FSF) or genipin (G-FSF). The characterization of swelling, oxygen permeability and crosslinking density shows reduced swelling and oxygen permeability for both crosslinked films compared to non-crosslinked films (N-FSF). Loading of fibroblast growth factor 2 (FGF2) into the films results in a sustained release from crosslinked FSF in comparison to non-crosslinked FSF. Biocompatibility studies in vitro with human dermal fibroblasts cultured underneath the films demonstrate increased cell growth and cell migration for all films with and without FGF2. Especially G-FSF loaded with FGF2 greatly increases cell proliferation and migration. In vivo biocompatibility studies by subcutaneous implantation in mice show that E-FSF causes an inflammatory tissue response that is absent in the case of G-FSF. N-FSF also represents a biocompatible film but shows early degradation. All FSF possess antibacterial properties against gram+ and gram- bacteria demonstrated by an agar diffusion disc assay. In summary, FSF made of alginate and chitosan crosslinked with genipin can act as a reservoir for the sustained release of FGF2, possessing high biocompatibility in vitro and in vivo. Moreover, G-FSF promotes growth and migration of human dermal fibroblasts and has antibacterial properties, which makes it an interesting candidate for bioactive wound.
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Affiliation(s)
- Adrian Hautmann
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, 06120 Halle (Saale), Germany
| | - Devaki Kedilaya
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, 06120 Halle (Saale), Germany
| | - Sanja Stojanović
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Đinđića 81, 18000, Niš, Serbia; Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Đinđića 81, 18000, Niš, Serbia
| | - Christian K Marx
- Department of Downstream Processing, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Weinbergweg 22, 06120 Halle (Saale), Germany
| | - Stevo Najman
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Đinđića 81, 18000, Niš, Serbia; Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Markus Pietzsch
- Department of Downstream Processing, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Weinbergweg 22, 06120 Halle (Saale), Germany
| | - João F Mano
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Thomas Groth
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, 06120 Halle (Saale), Germany; Interdisciplinary Center of Material Research, Martin Luther University Halle-Wittenberg, Germany.
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8
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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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9
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Coraça-Huber DC, Steixner SJM, Najman S, Stojanovic S, Finze R, Rimashevskiy D, Saginova D, Barbeck M, Schnettler R. Lyophilized Human Bone Allograft as an Antibiotic Carrier: An In Vitro and In Vivo Study. Antibiotics (Basel) 2022; 11:antibiotics11070969. [PMID: 35884224 PMCID: PMC9312243 DOI: 10.3390/antibiotics11070969] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/04/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023] Open
Abstract
Background: Antibiotics delivered from implanted bone substitute materials (BSM) can potentially be used to prevent acute infections and biofilm formation, providing high concentrations of antibiotics at the surgical site without systemic toxicity. In addition, BSM should allow osteoconductivity supporting bone healing without further surgery. Promising results have been achieved using lyophilized bone allografts mixed with antibiotics. Methods: In this study specially prepared human bone allografts were evaluated as an antibiotic carrier in vitro and in vivo. The efficacy of different antibiotic-impregnated bone allografts was measured by drug release tests in vitro and in vivo and bacterial susceptibility tests using four bacterial species usually responsible for implant-associated infections. Results: The loading procedures of allograft bone substitutes with antibiotics were successful. Some of the antibiotic concentrations exceeded the MIC90 for up to 7 days in vitro and for up to 72 h in vivo. The susceptibility tests showed that S. epidermidis ATCC 12228 was the most susceptible bacterial species in comparison to the other strains tested for all antibiotic substances. Vancomycin and rifampicin showed the best results against standard and patient-isolated strains in vitro. In vivo, new bone formation was comparable in all study groups including the control group without antibiotic loading. Conclusions: Human bone allografts showed the capacity to act as customized loaded antibiotic carriers to prevent acute infections and should be considered in the management of bone infections in combination with systemic antimicrobial therapy.
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Affiliation(s)
- Débora C. Coraça-Huber
- Research Laboratory for Biofilms and Implant Associated Infections (BIOFILM LAB), Experimental Orthopaedics, University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Peter-Mayr-Strasse 4b, Room 204, 6020 Innsbruck, Austria;
- Correspondence: ; Tel.: +43-512-9003-71697; Fax: +43-512-9003-73691
| | - Stephan J. M. Steixner
- Research Laboratory for Biofilms and Implant Associated Infections (BIOFILM LAB), Experimental Orthopaedics, University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Peter-Mayr-Strasse 4b, Room 204, 6020 Innsbruck, Austria;
| | - Stevo Najman
- Department of Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica, 18108 Niš, Serbia; (S.N.); (S.S.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica, 18108 Niš, Serbia
| | - Sanja Stojanovic
- Department of Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica, 18108 Niš, Serbia; (S.N.); (S.S.)
- Department of Biology and Human Genetics, Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica, 18108 Niš, Serbia
| | - Ronja Finze
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany; (R.F.); (R.S.)
| | - Denis Rimashevskiy
- Department of Traumatology and Orthopedics, Peoples Friendship University of Russia, Miklukho-Maklaya Street 6, 117198 Moscow, Russia;
| | - Dina Saginova
- National Scientific Center of Traumatology and Orthopedics Named after Academician N. D. Batpenov, 15a Abylay khan Ave., Nur-Sultan 01000, Kazakhstan;
| | - Mike Barbeck
- Clinic and Policlinic for Dermatology and Venereology, University Medical Center Rostock, 18057 Rostock, Germany;
- BerlinAnalytix GmbH, 12109 Berlin, Germany
| | - Reinhard Schnettler
- University Medical Centre, Justus Liebig University of Giessen, 35390 Giessen, Germany; (R.F.); (R.S.)
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10
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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: 1] [Impact Index Per Article: 0.5] [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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11
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Rajan M, Najman S, Rajendran NK. Editorial: Biomimetic Materials for Tissue Regenerations. Front Cell Dev Biol 2022; 10:825455. [PMID: 35309922 PMCID: PMC8924455 DOI: 10.3389/fcell.2022.825455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/02/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mariappan Rajan
- Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, India
| | - Stevo Najman
- Faculty of Medicine, University of Nis, Rochester, NY, United States
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12
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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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13
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Stojiljković D, Nešić I, Tadić V, Najman S, Stojanović S. Standardized wild apple fruit extract as a bioactive agent in dermocosmetic products for efficacy skin hydration - in vitro and in vivo evaluation. J Cosmet Dermatol 2022; 21:4788-4795. [PMID: 35048513 DOI: 10.1111/jocd.14787] [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: 10/17/2021] [Revised: 12/14/2021] [Accepted: 01/10/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Wild apple fruit are rich source of bioactive substances, which can be potentially used for a production of dermocosmetic products. AIM The aim of study was in vitro and in vivo investigation of standardized wild apple fruit extracts (obtained by purified water and maceration-EM, percolation-EP, Soxhlet extraction-ES and ultrasonic extraction-EU) and dermocosmetic creams of o/w type containing 6%, 12% and 15% of extract-EU, as extract with the best content of polyphenolic compounds (CE6, CE12, CE15, respectively), in order to determine the optimal concentration of the extract, which manifests the best effect on the biophysical characteristics of the skin after application. METHODS Content of polyphenolic substances-PP was investigated using HPLC analysis, while in vitro biological activity was examined on L929 fibroblasts using MTT viability test. In vivo efficacy included screening and comparation of skin hydration potential, transepidermal water loss-TEWL and skin pH after 28 days of creams application on healthy volunteers' skin. RESULTS Content of identified PP was the highest in the extract-EU (2001.57±0.87 mgPP/100gEU) and satisfactory in cream-CE6 (53.83±0.23 mgPP/100gCE6). Procyanidin B2 was the most common PP. Biological activity analysis showed that extract-EU could be considered as non-cytotoxic for fibroblasts in examined concentrations. In vivo investigation revealed an increase of skin hydration (after 28 days ΔEC was 21.19±7.59, 26.71±7.94 and 29.60±10.95 for CE6, CE12 and CE15, respectively), with unchanged TEWL and skin pH values. CONCLUSION Obtained results indicate that wild apple fruit extract represents a valuable source of bioactive substances, with good hydration effects of creams on human skin (effect of creams increased proportionally to the increase of concentration of incorporated extract), so it might be considered as a great potential for application in dermocosmetic industry.
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Affiliation(s)
| | - Ivana Nešić
- University of Niš, Faculty of Medicine, Department of Pharmacy, Niš, Serbia
| | - Vanja Tadić
- Institute for Medicinal Plant Research "Dr Josif Pančić", Department for Pharmaceutical Research and Development, Belgrade, Serbia
| | - Stevo Najman
- University of Niš, Faculty of Medicine, Department of Biology and Human Genetics, Department for Cell and Tissue Engineering, Niš, Serbia
| | - Sanja Stojanović
- University of Niš, Faculty of Medicine, Department of Biology and Human Genetics, Department for Cell and Tissue Engineering, Niš, Serbia
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14
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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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15
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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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16
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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:ijms22147623. [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] [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
- Correspondence: ; Tel.: +49-176-81022467
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17
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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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18
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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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19
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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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20
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Ilić-Stojanović S, Nikolić L, Nikolić V, Petrović S, Oro V, Mitić Ž, Najman S. Semi-Crystalline Copolymer Hydrogels as Smart Drug Carriers: In Vitro Thermo-Responsive Naproxen Release Study. Pharmaceutics 2021; 13:pharmaceutics13020158. [PMID: 33530287 PMCID: PMC7911820 DOI: 10.3390/pharmaceutics13020158] [Citation(s) in RCA: 12] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, poly(N-isopropylacrylamide-co-2-hydroxypropyl methacrylate) hydrogels were synthesized using free radical initiated copolymerization method. Four hydrogels with different cross-linker concentrations were prepared. Semi-crystalline, cross-linked copolymer networks were confirmed by FTIR, SEM and XRD analysis. Variation of swelling behaviour was monitored gravimetrically and thermo-responsiveness has been noticed. An application of synthesized thermo-responsive hydrogels as carriers for the modulated release of anti-inflammatory model drug was investigated. Moreover, naproxen loading into these hydrogels was also determined using FTIR, SEM and XRD techniques and release was analyzed using HPLC method at simulated physiological conditions. Swelling kinetic and mechanism of water transport, as well as diffusion of naproxen through the hydrogels were analyzed. Thus, the aim of this work was to study various compositions of obtained hydrogels and their possibility of application as a thermo-responsive carrier for prolonged naproxen release in order to evaluate as a potential candidate for drug carrier in future pharmaceutical applications.
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Affiliation(s)
- Snežana Ilić-Stojanović
- Faculty of Technology, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia; (L.N.); (V.N.)
- Correspondence:
| | - Ljubiša Nikolić
- Faculty of Technology, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia; (L.N.); (V.N.)
| | - Vesna Nikolić
- Faculty of Technology, University of Niš, Bulevar oslobodjenja 124, 16000 Leskovac, Serbia; (L.N.); (V.N.)
| | - Slobodan Petrović
- Faculty of Technology and Metallurgy, University of Belgrade, 11000 Belgrade, Serbia;
| | - Violeta Oro
- Department of Plant Diseases, Institute for Plant Protection and Environment, University of Belgrade, 11000 Belgrade, Serbia;
| | - Žarko Mitić
- Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica 81, 18108 Niš, Serbia; (Ž.M.); (S.N.)
| | - Stevo Najman
- Faculty of Medicine, University of Niš, Blvd. Dr Zorana Djindjica 81, 18108 Niš, Serbia; (Ž.M.); (S.N.)
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21
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Stojanović S, AlKhoury H, Radenković M, Cvetković V, Jablonska M, Schmelzer CEH, Syrowatka F, Živković JM, Groth T, Najman S. Tissue response to biphasic calcium phosphate covalently modified with either heparin or hyaluronic acid in a mouse subcutaneous implantation model. J Biomed Mater Res A 2020; 109:1353-1365. [PMID: 33128275 DOI: 10.1002/jbm.a.37126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 10/25/2020] [Accepted: 10/28/2020] [Indexed: 12/18/2022]
Abstract
Biphasic calcium phosphate (BCP) materials are widely employed as bone substitute materials due to their resorption/degradation properties. Inflammation after implantation of such materials represents a prerequisite for bone tissue repair and regeneration but can be also problematic if it is not only transient and if it is followed by fibrosis and scarring. Here, we modified BCP covalently with hyaluronan (HA) and heparin (Hep), glycosaminoglycans that possess anti-inflammatory properties. Beside the characterization of particle surface properties, the focus was on in vivo tissue response after subcutaneous implantation in mice. Histological analysis revealed a decrease in signs of inflammatory response to BCP when modified with either HA or Hep. Reduced vascularization after 30 days was noticed when BCP was modified with either HA or Hep with greater cellularity in all examined time points. Compared to plain BCP, expression of endothelial-related genes Flt1 and Vcam1 was higher in BCP-HA and BCP-Hep group at day 30. Expression of osteogenesis-related genes Sp7 and Bglap after 30 days was the highest in BCP group, followed by BCP-Hep, while the lowest expression was in BCP-HA group which correlates with collagen amount. Hence, coating of BCP particles with HA seems to suppress inflammatory response together with formation of new bone-like tissue, while the presence of Hep delays the onset of inflammatory response but permits osteogenesis in this subcutaneous bone-forming model. Transferring the results of this study to other coated materials intended for biomedical application may also pave the way to reduction of inflammation after their implantation.
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Affiliation(s)
- Sanja Stojanović
- 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
| | - Hala AlKhoury
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.,Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Milena Radenković
- Department for Cell and Tissue Engineering, Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Vladimir Cvetković
- Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Niš, Serbia
| | - Magdalena Jablonska
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Christian E H Schmelzer
- Department of Biological and Macromolecular Materials, Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany
| | - Frank Syrowatka
- Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Jelena M Živković
- 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
| | - Thomas Groth
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.,Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Laboratory of Biomedical Nanotechnologies, Institute of Bionic Technologies and Engineering, I.M. Sechenov First Moscow State University, Moscow, Russian Federation
| | - 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
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22
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Bojanić V, Najman S, Veličkov A, Bojanić N, Milenković J. DILTIAZEM PREVENTS MONOSODIUM GLUTAMATE TOXICITY IN THE RAT TESTES. AMM 2020. [DOI: 10.5633/amm.2020.0303] [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: 11/18/2022] Open
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23
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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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24
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Ilić-Stojanović S, Urošević M, Nikolić L, Petrović D, Stanojević J, Najman S, Nikolić V. Intelligent Poly( N-Isopropylmethacrylamide) Hydrogels: Synthesis, Structure Characterization, Stimuli-Responsive Swelling Properties, and Their Radiation Decomposition. Polymers (Basel) 2020; 12:polym12051112. [PMID: 32414046 PMCID: PMC7285319 DOI: 10.3390/polym12051112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 03/31/2020] [Revised: 04/27/2020] [Accepted: 05/07/2020] [Indexed: 11/16/2022] Open
Abstract
Poly(N-isopropylmethacrylamide) (p(NiPMAm)) is one of the lesser known homopolymers that has significant potential for designing new “intelligent” materials. The aims of this work were the synthesis a series of cross-linked p(NiPMAm) hydrogels by the free radical polymerization method and the application of gamma-ray radiation for additional cross-linking. The synthesized p(NiPMAm) hydrogels were structurally characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The amount of unreacted monomers was analyzed using high pressure liquid chromatography (HPLC) to evaluate conversion of monomers into polymers. The swelling behavior was monitored in dependence of pH and temperature changes. The previous aim of gamma-ray radiation was the further the cross-linkage of the obtained hydrogel sample in the gelatinous, paste-like state, but the gamma-ray radiation caused decomposition. After absorbing irradiation doses, they transformed into the liquid phase. The results obtained by the gel permeation chromatography (GPC) method indicated that only oligomers and monomers were present in the irradiated liquid material, without molecules with a higher average molar mass, i.e., that the decomposition of the hydrogels occurred. Additionally, the irradiated liquid material was analyzed using the static headspace gas chromatography mass spectrometry (HSS-GC/MS) and gas chromatography/flame ionization detection (HSS-GC/FID) methods. The presence of unchanged initiator molecule and a dominant amount of four new molecules that were different from homopolymers and the reactant (monomer and cross-linker) were determined.
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Affiliation(s)
- Snežana Ilić-Stojanović
- Faculty of Technology, University of Niš, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia; (M.U.); (L.N.); (J.S.); (V.N.)
- Correspondence: or
| | - Maja Urošević
- Faculty of Technology, University of Niš, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia; (M.U.); (L.N.); (J.S.); (V.N.)
| | - Ljubiša Nikolić
- Faculty of Technology, University of Niš, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia; (M.U.); (L.N.); (J.S.); (V.N.)
| | - Djordje Petrović
- Vinča Institute of Nuclear Sciences, Department of Radioisotopes, University of Belgrade, Mike Petrovića Alasa 12-14, 11351 Vinča, Belgrade, Serbia;
| | - Jelena Stanojević
- Faculty of Technology, University of Niš, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia; (M.U.); (L.N.); (J.S.); (V.N.)
| | - Stevo Najman
- Faculty of Medicine, University of Niš, Boulevard dr Zorana Djindjica 81, 18108 Niš, Serbia;
| | - Vesna Nikolić
- Faculty of Technology, University of Niš, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia; (M.U.); (L.N.); (J.S.); (V.N.)
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25
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AlKhoury H, Hautmann A, Erdmann F, Zhou G, Stojanović S, Najman S, Groth T. Study on the potential mechanism of anti-inflammatory activity of covalently immobilized hyaluronan and heparin. J Biomed Mater Res A 2020; 108:1099-1111. [PMID: 31967394 DOI: 10.1002/jbm.a.36885] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 08/22/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 12/12/2022]
Abstract
Inflammation and subsequent fibrotic encapsulation that occur after implantation of biomaterials are issues that fostered efforts in designing novel biocompatible materials to modulate the immune response. In this study, glycosaminoglycans (GAG) like hyaluronic acid (HA) and heparin (Hep) that possess anti-inflammatory activity were covalently bound to NH2 -modified surfaces using EDC/NHS cross-linking chemistry. Immobilization and physical surface properties were characterized by atomic forces microscopy, water contact angle studies and streaming potential measurements demonstrating the presence of GAG on the surfaces that became more hydrophilic and negatively charged compared to NH2 -modified. THP-1 derived macrophages were used here to study the mechanism of action of GAG to affect the inflammatory responses illuminated by studying macrophage adhesion, the formation of multinucleated giant cells (MNGCs) and IL-1β release that were reduced on GAG-modified surfaces. Detailed investigation of the signal transduction processes related to macrophage activation was performed by immunofluorescence staining of NF-κB (p65 subunit) together with immunoblotting. We studied also association and translocation of FITC-labeled GAG. The results show a significant decrease in NF-κB level as well as the ability of macrophages to associate with and take up HA and Hep. These results illustrate that the anti-inflammatory activity of GAG is not only related to making surfaces more hydrophilic, but also their active involvement in signal transduction processes related to inflammatory reactions, which may pave the way to design new anti-inflammatory surface coatings for implantable biomedical devices.
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Affiliation(s)
- Hala AlKhoury
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.,Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Adrian Hautmann
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany
| | - Frank Erdmann
- Pharmaceutical Biology and Pharmacology Department, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany
| | - Guoying Zhou
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany
| | - Sanja Stojanović
- 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
| | - 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
| | - Thomas Groth
- Department of Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle Wittenberg, Halle (Saale), Germany.,Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Laboratory of Biomedical Nanotechnologies, Institute of Bionic Technologies and Engineering, I.M. Sechenov First Moscow State University, Moscow, Russian Federation
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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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Vukelić-Nikolić M, Popović J, Djordjević L, Najman S. HYPERSENSITIVITY POTENTIAL OF GYNECOLOGICAL DEVICES. amm 2019. [DOI: 10.5633/amm.2019.0318] [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: 11/18/2022] Open
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28
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Tasić-Kostov M, Arsić I, Pavlović D, Stojanović S, Najman S, Naumović S, Tadić V. Towards a modern approach to traditional use: in vitro and in vivo evaluation of Alchemilla vulgaris L. gel wound healing potential. J Ethnopharmacol 2019; 238:111789. [PMID: 30904703 DOI: 10.1016/j.jep.2019.03.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 01/16/2019] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alchemilla vulgaris is an important remedy in European folk medicine, known for its astringent and anti-inflammatory properties; it is traditionally used to heal gynecological and gastrointestinal diseases. Despite its folkloric use in wound healing, there is a lack of scientific data to support this therapeutic application. AIM OF THE STUDY To analyze the wound healing potential of different solvent A. vulgaris extracts per se and after incorporation into hydrogels as topical vehicles, using two complementary methods - in vitro wound healing assay with L929 fibroblasts and in vivo assessment of skin barrier repair potential. Besides scientific justification of the traditional usage, we aimed to ephasize the importance of a proper vehicle for herbal extracts. The wound healing activity has been connected to the chemical profile of the investigated extracts, their antioxidative properties, but also to pH of the investigated gels and their mechanical characteristics. MATERIALS AND METHODS Antioxidant activity of investigated extracts was estimated using both 2,2-diphenyl-1-picrylhydrazyl and β-carotene/linoleic acid models. Chemical profile was achieved applying spectrophotometric and HPLC methods. In vitro scratch assay with L929 fibroblasts, and in vivo study of skin barrier repair potential of hydrogels with A. vulgaris extracts on human skin employing biophysical measurements, were performed in order to confirm the wound healing potential of A. vulgaris. Texture analysis of the gels was performed alongside the pH measurements. RESULTS All tested extracts and gels accelerated the wound healing process while the effect of ethanolic extract on migration of fibroblasts was the most pronounced. The highest extent of wound closure was also observed for the ethanolic extract. The most favorable effect on in vitro wound healing was observed for gel with propyleneglycolic extract. Results of in vivo study were in line with in vitro findings. Healing potential may be attributed to phenolic compounds found in A. vulgaris extracts, low pH of the gels, and the satisfying antioxidant activity of the extracts. Parameters obtained by textural analysis indicated satisfying mechanical properties of the gels, relevant to topical application. CONCLUSION Our study offers pharmacological evidence on the folkloric use of A. vulgaris in wound treatment, particularly after incorporation into hydrogel, and underlines an importance of a proper vehicle for incorporation of herbal extracts intended for topical treatment.
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Affiliation(s)
- Marija Tasić-Kostov
- Department of Pharmacy, University of Niš -Faculty of Medicine, Niš, Serbia.
| | - Ivana Arsić
- Department of Pharmacy, University of Niš -Faculty of Medicine, Niš, Serbia
| | - Dragana Pavlović
- Department of Pharmacy, University of Niš -Faculty of Medicine, Niš, Serbia
| | - Sanja Stojanović
- Department of Biology and Human Genetics and Department for Cell and Tissue Engineering, University of Niš - Faculty of Medicine, Niš, Serbia
| | - Stevo Najman
- Department of Biology and Human Genetics and Department for Cell and Tissue Engineering, University of Niš - Faculty of Medicine, Niš, Serbia
| | - Sonja Naumović
- Department of Pharmacy, University of Niš -Faculty of Medicine, Niš, Serbia
| | - Vanja Tadić
- Institute for Medicinal Plant Research "Dr Josif Pančić", Department of Pharmaceutical Research and Development, Tadeuša Košćuška 1, 11 000, Belgrade, Serbia
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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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Barbeck M, Perić-Kačarević Ž, Kavehei F, Rider P, Najman S, Stojanović S, Rimashevskiy D, Wenisch S, Schnettler R. THE EFFECT OF TEMPERATURE TREATMENT OF XENOGENEIC BONE SUBSTITUTE ON THE TISSUE RESPONSE –A MINI REVIEW. AMM 2019. [DOI: 10.5633/amm.2019.0118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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31
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Micić I, Petrović M, Stojiljković P, Stojanović S, Najman S, Vacić N. RABBIT BONE TISSUE RESPONSE TO THE DEFECTS TREATED WITH DIFFERENT FIXATION METHODS. AMM 2018. [DOI: 10.5633/amm.2018.0405] [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: 11/18/2022] Open
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Damnjanović I, Kocić G, Najman S, Stojanović S, Tomović K, Ilić B, Veljković A, Šmelcerović A. MOLECULAR MECHANISMS OF POTENTIAL SYNERGI STIC EFFECT OF KETOPROFEN AND MELOX ICAM WITH CONVENTION AL CYTOSTATICS IN HUMAN CERVIX CANCER CELL LINE. AMM 2018. [DOI: 10.5633/amm.2018.0407] [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: 11/18/2022] Open
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33
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Golubović I, Stojiljković P, Golubović I, Radovanović Z, Radojković M, Mitić A, Baščarević Z, Kutlešić K, Krstić A, Najman S, Golubović Z. PRIMARY WOUND CARE A ND EXTERNAL SKELETAL FIXATION IN SURGICAL TREATMENT OF OPEN TIBIAL FRACTURES. AMM 2018. [DOI: 10.5633/amm.2018.0403] [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: 11/18/2022] Open
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Stojanović S, Najman S, Korać A. Stem Cells Derived from Lipoma and Adipose Tissue-Similar Mesenchymal Phenotype but Different Differentiation Capacity Governed by Distinct Molecular Signature. Cells 2018; 7:E260. [PMID: 30544806 PMCID: PMC6316974 DOI: 10.3390/cells7120260] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/29/2018] [Accepted: 12/06/2018] [Indexed: 01/09/2023] Open
Abstract
Lipomas are benign adipose tissue tumors of unknown etiology, which can vary in size, number, body localization and cell populations within the tissue. Lipoma-derived stem cells (LDSCs) are proposed as a potential tool in regenerative medicine and tissue engineering due to their similar characteristics with adipose-derived stem cells (ADSCs) reported so far. Our study is among the first giving detailed insights into the molecular signature and differences in the differentiation capacity of LDSCs in vitro compared to ADSCs. Mesenchymal stem cell phenotype was analyzed by gene expression and flow cytometric analysis of stem cell markers. Adipogenesis and osteogenesis were analyzed by microscopic analysis, cytochemical and immunocytochemical staining, gene and protein expression analyses. We showed that both LDSCs and ADSCs were mesenchymal stem cells with similar phenotype and stemness state but different molecular basis for potential differentiation. Adipogenesis-related genes expression pattern and presence of more mature adipocytes in ADSCs than in LDSCs after 21 days of adipogenic differentiation, indicated that differentiation capacity of LDSCs was significantly lower compared to ADSCs. Analysis of osteogenesis-related markers after 16 days of osteogenic differentiation revealed that both types of cells had characteristic osteoblast-like phenotype, but were at different stages of osteogenesis. Differences observed between LDSCs and ADSCs are probably due to the distinct molecular signature and their commitment in the tissue that governs their different capacity and fate during adipogenic and osteogenic induction in vitro despite their similar mesenchymal phenotype.
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Affiliation(s)
- Sanja Stojanović
- Department of Biology and Human Genetics and Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia.
| | - Stevo Najman
- Department of Biology and Human Genetics and Department for Cell and Tissue Engineering, Faculty of Medicine, University of Niš, 18000 Niš, Serbia.
| | - Aleksandra Korać
- Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.
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Mitić Ž, Nikolić GM, Cakić M, Nikolić GS, Živanović S, Mitić S, Najman S. Synthesis, spectroscopic and structural characterization of Co(II)-pullulan complexes by UV-Vis, ATR-FTIR, MALDI-TOF/TOF MS and XRD. Carbohydr Polym 2018; 200:25-34. [DOI: 10.1016/j.carbpol.2018.07.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/26/2018] [Accepted: 07/11/2018] [Indexed: 02/08/2023]
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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:ijms19102952. [PMID: 30262765 PMCID: PMC6213856 DOI: 10.3390/ijms19102952] [Citation(s) in RCA: 42] [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: 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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Zdravković A, Nikolić L, Ilić-Stojanović S, Nikolić V, Najman S, Mitić Ž, Ćirić A, Petrović S. The removal of heavy metal ions from aqueous solutions by hydrogels based on N-isopropylacrylamide and acrylic acid. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2295-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Barbeck M, Serra T, Booms P, Stojanovic S, Najman S, Engel E, Sader R, Kirkpatrick CJ, Navarro M, Ghanaati S. Analysis of the in vitro degradation and the in vivo tissue response to bi-layered 3D-printed scaffolds combining PLA and biphasic PLA/bioglass components - Guidance of the inflammatory response as basis for osteochondral regeneration. Bioact Mater 2017; 2:208-223. [PMID: 29744431 PMCID: PMC5935508 DOI: 10.1016/j.bioactmat.2017.06.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [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: 11/25/2016] [Revised: 06/13/2017] [Accepted: 06/13/2017] [Indexed: 01/20/2023] Open
Abstract
The aim of the present study was the in vitro and in vivo analysis of a bi-layered 3D-printed scaffold combining a PLA layer and a biphasic PLA/bioglass G5 layer for regeneration of osteochondral defects in vivo Focus of the in vitro analysis was on the (molecular) weight loss and the morphological and mechanical variations after immersion in SBF. The in vivo study focused on analysis of the tissue reactions and differences in the implant bed vascularization using an established subcutaneous implantation model in CD-1 mice and established histological and histomorphometrical methods. Both scaffold parts kept their structural integrity, while changes in morphology were observed, especially for the PLA/G5 scaffold. Mechanical properties decreased with progressive degradation, while the PLA/G5 scaffolds presented higher compressive modulus than PLA scaffolds. The tissue reaction to PLA included low numbers of BMGCs and minimal vascularization of its implant beds, while the addition of G5 lead to higher numbers of BMGCs and a higher implant bed vascularization. Analysis revealed that the use of a bi-layered scaffold shows the ability to observe distinct in vivo response despite the physical proximity of PLA and PLA/G5 layers. Altogether, the results showed that the addition of G5 enables to reduce scaffold weight loss and to increase mechanical strength. Furthermore, the addition of G5 lead to a higher vascularization of the implant bed required as basis for bone tissue regeneration mediated by higher numbers of BMGCs, while within the PLA parts a significantly lower vascularization was found optimally for chondral regeneration. Thus, this data show that the analyzed bi-layered scaffold may serve as an ideal basis for the regeneration of osteochondral tissue defects. Additionally, the results show that it might be able to reduce the number of experimental animals required as it may be possible to analyze the tissue response to more than one implant in one experimental animal.
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Affiliation(s)
| | - Tiziano Serra
- Institute for Bioengineering of Catalonia (IBEC), Biomaterials for Regenerative Medicine, Barcelona, Spain
| | - Patrick Booms
- Clinic of Oro-Maxillofacial and Plastic Surgery, FORM-Lab, Goethe University Frankfurt, Frankfurt, Germany
| | - Sanja Stojanovic
- University of Niš, Faculty of Medicine, Department for Cell and Tissue Engineering, Institute of Biology and Human Genetics, Niš, Serbia
| | - Stevo Najman
- University of Niš, Faculty of Medicine, Department for Cell and Tissue Engineering, Institute of Biology and Human Genetics, Niš, Serbia
| | - Elisabeth Engel
- Institute for Bioengineering of Catalonia (IBEC), Biomaterials for Regenerative Medicine, Barcelona, Spain
- Technical University of Catalonia (UPC), Dpt. Materials Science and Metallurgy, Spain
- CIBER en Bioingenieria, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Robert Sader
- Clinic of Oro-Maxillofacial and Plastic Surgery, FORM-Lab, Goethe University Frankfurt, Frankfurt, Germany
| | - Charles James Kirkpatrick
- Clinic of Oro-Maxillofacial and Plastic Surgery, FORM-Lab, Goethe University Frankfurt, Frankfurt, Germany
| | - Melba Navarro
- Institute for Bioengineering of Catalonia (IBEC), Biomaterials for Regenerative Medicine, Barcelona, Spain
| | - Shahram Ghanaati
- Clinic of Oro-Maxillofacial and Plastic Surgery, FORM-Lab, Goethe University Frankfurt, Frankfurt, Germany
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Mitić Ž, Stolić A, Stojanović S, Najman S, Ignjatović N, Nikolić G, Trajanović M. Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review. Materials Science and Engineering: C 2017. [DOI: 10.1016/j.msec.2017.05.127] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Dekić MS, Radulović NS, Stojanović NM, Randjelović PJ, Stojanović-Radić ZZ, Najman S, Stojanović S. Spasmolytic, antimicrobial and cytotoxic activities of 5-phenylpentyl isothiocyanate, a new glucosinolate autolysis product from horseradish ( Armoracia rusticana P. Gaertn., B. Mey. & Scherb., Brassicaceae). Food Chem 2017; 232:329-339. [DOI: 10.1016/j.foodchem.2017.03.150] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 03/15/2017] [Accepted: 03/28/2017] [Indexed: 12/27/2022]
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Popov BB, Hristova VK, Presilski S, Shariati MA, Najman S. Assessment of heavy metals in propolis and soil from the Pelagonia region, Republic of Macedonia. Maced J Chem Chem Eng 2017. [DOI: 10.20450/mjcce.2017.1004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this study, the contents of five representative heavy metals (Cr, Pb, Zn, Cd and Cu) were determined in soil and propolis samples from four locations in southwestern Macedonia using atomic absorption spectrometry. The aim was to pinpoint the key factors that influence the content of heavy metals in propolis and to establish whether there is a connection between the contents of heavy metals in soil and in propolis from the same location. Generally, at all of the locations, the relative concentrations of heavy metals in soil were found to decrease in the following order: Zn>Cr>Cu>Pb>Cd. The highest mean values for concentrations of heavy metals in these soils were found to be: 72.03, 38.28, 26.64, 17.15 and 0.60 mg kg–1 for Zn, Cr, Cu, Pb and Cd, respectively, and they are all below the target values from the new Dutch list. The general trend of the heavy metal contents in propolis from the same four locations, in decreasing order, is: Pb>Cr>Zn>Cu≈Cd. Generally, the propolis samples from the highland locations (Orle and Rapeš) had lower overall contents of heavy metals than the lowland locations (Novaci and Makovo). All of the analyzed propolis samples meet the requirements of the Macedonian legislation and the international organizations for the maximum allowed levels for heavy metals. Attempts were made to find a correlation between the heavy metal contents in soil and propolis. According to our aim, the investigation presented herein offers one step towards a complete picture of ecological safety of the specific areas in the Republic of Macedonia. To do so, it is necessary to perform additional studies and to find appropriate biomonitoring methods. Further studies are needed to complete the picture and to determine the major pathways of incorporation of heavy metals in beehive products.
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Ajduković Z, Najman S, Dordević LJ, Savić V, Mihailović D, Petrović D, Ignjatović N, Uskoković D. Repair of Bone Tissue Affected by Osteoporosis with Hydroxyapatite-Poly-L-lactide (HAp-PLLA) With and Without Blood Plasma. J Biomater Appl 2016; 20:179-90. [PMID: 16183676 DOI: 10.1177/0885328205050519] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study is to examine the reparatory ability of the synthetic biomaterial hydroxyapatite-poly-L-lactide (HAp-PLLA), the replacement of alveolar ridge, and rehabilitation of bone defects caused by osteoporosis, in an experimental group of animals. The experiments are performed on syngeneic Sprague Dawley rats. Osteoporosis is induced by glucocorticoids in rats during a 12-week period. After this, the experimental group of animals is divided into five subgroups. An artificial defect is made in the alveolar bone on the left side of the mandible. In one group of animals, the defect is left to heal by itself, while in other groups, pure HAp-PLLA or one mixed with plasma is implanted. The best results are achieved by the implantation of the HAp-PLLA composite biomaterial mixed with autologous plasma. Formation of a new mandibular bone is seen, growing intensely, leading to rapid osteogenesis.
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Affiliation(s)
- Z Ajduković
- Faculty of Medicine, Clinic of Stomatology, Department of Prosthodontics, Ni, Serbia and Montenegro
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Đorđević L, Najman S, Vasiljević P, Miljković M, Ignjatović N, Uskoković D, Plavšić M. Scanning Electron Microscopy Analysis of Changes of Hydroxiapatite/Poly-L-Lactide with Different Molecular Weight of PLLAaAfter Intraperitoneal Implantation. ACTA VET-BEOGRAD 2016. [DOI: 10.1515/acve-2016-0020] [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: 11/15/2022] Open
Abstract
Abstract
Implantation of a biomaterial is one of the important trends in solving the problem of bone tissue loss. Calcium hydroxiapatite (HAp), as the most representative bone component is a serious candidate for such implantations. The synthetic polymer poly-L-lactide (PLLA) in HAp/PLLA is often used as a polymeric material, with a role in the substitution of bone tissue collagen fibers. Fibers of PLLA may strengthen HAp and its good bioresorption provides space for tissue remodeling. Differences in porosity, microstructure, compressive consistency as well as bioresorbility of HAp/ PLLA may be achieved by using PLLA with different molecular weights. In this study HAp/PLLA composites with PLLA of different molecular weights (50,000; 160,000 and 430,000) were implanted in mouse peritoneum in order to examine the influence of the molecular weight of PLLA on morphology changes. Microstructural changes of biomaterial (HAp/PLLA) surface were analyzed one week, three weeks and four months after their implantation using Scanning Electron Microscopy. The results showed a significant difference in tissue reactions on the applied biocomposites, depending on their molecular weight. The most intense proliferation of cells was induced by HAp/PLLA 50,000 compared to HAp/PLLA 430,000 and HAp/PLLA 160,000. In the vicinity of HAp/PLLA 430,000 abundant erythrocytes were observed. The differences in biological reactions on the examined biocomposites are significant for their practical applications. HAp/PLLA composite biomaterials of different types and resorption rates require specific designing and programming to become suitable for particular purposes in an organism.
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Affiliation(s)
- Ljubiša Đorđević
- Department of Biology with Ecology, Faculty of Science and Mathematics, University of Niš, Serbia
| | - Stevo Najman
- Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Serbia
| | - Perica Vasiljević
- Department of Biology with Ecology, Faculty of Science and Mathematics, University of Niš, Serbia
| | - Miroslav Miljković
- Scientific Research Center for Biomedicine, Faculty of Medicine, University of Niš, Serbia
| | - Nenad Ignjatović
- Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade, Serbia
| | - Dragan Uskoković
- Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade, Serbia
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Janić J, Mijović Ž, Mihailović D, Živković N, Rajković J, Najman S. OPTICAL DENSITY OF CORTICAL BONE MATRIX IS DIMINISHED IN EXPERIMENTALLY INDUCED OSTEOPOROSIS. AMM 2016. [DOI: 10.5633/amm.2016.0206] [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: 11/18/2022] Open
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Golubović I, Ristić B, Stojiljković P, Ćirić M, Golubović I, Radovanović Z, Petrović S, Djordjević N, Golubović Z, Najman S. Results of open tibial fracture treatment using external fixation. SRP ARK CELOK LEK 2016; 144:293-299. [PMID: 29648747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
Abstract
INTRODUCTION Open lower leg fractures are the most common open fractures of the locomotor system and their treatment is associated with a number of complications. OBJECTIVE The aim of the paper was to present the results of the treatment of 68 patients with open lower leg fractures, as well as the complications that accompany the treatment of these fractures. METHODS In the analyzed group, there were 45 (66.18%) men and 23 (33.82%) women. The majority of patients – 33 (48.53%) of them – were injured in motor vehicle accidents, whereas 24 (35.29%) patients sustained injuries due to falls from heights. In two (2.94%) patients the cause of open tibial fractures was gunshot injuries. In the analyzed group, there were 18 (26.47%) type I open fractures, 21 (30.88%) type II open fractures, 19 (27.94%) type IIIA open fractures, seven (10.29%) type IIIB open fractures, and three (4.41%) type IIIC open fractures. RESULTS The tibial shaft fracture healed without serious complications in 50 (73.53%) patients, whereas in 18 (26.47%) patients we observed some complications. Nonunion was found in 10 (14.71%) patients, osteitis in four (5.88), malunion in two (2.94%) patients. Milder complications such as soft tissue pin tract infection developed in 13 (19.12%) patients, infection of the open fracture wound soft tissue was observed in four (5.88%) patients. CONCLUSION Basic principles in the treatment of open lower leg fractures in this study are thorough primary open fracture wound treatment followed by the delayed wound closure, stable fracture fixation using unilateral external skeletal device, proper antibiotic treatment and tetanus prophylaxis. The results correlate with similar studies.
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Ajduković ZR, Mihajilov-Krstev TM, Ignjatović NL, Stojanović Z, Mladenović-Antić SB, Kocić BD, Najman S, Petrović ND, Uskoković DP. In Vitro Evaluation of Nanoscale Hydroxyapatite-Based Bone Reconstructive Materials with Antimicrobial Properties. J Nanosci Nanotechnol 2016; 16:1420-1428. [PMID: 27433598 DOI: 10.1166/jnn.2016.10699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the field of oral implantology the loss of bone tissue prevents adequate patient care, and calls for the use of synthetic biomaterials with properties that resemble natural bone. Special attention is paid to the risk of infection after the implantation of these materials. Studies have suggested that some nanocontructs containing metal ions have antimicrobial properties. The aim of this study was to examine the antimicrobial and hemolytic activity of cobalt-substituted hydroxyapatite nanoparticles, compared to hydroxyapatite and hydroxyapatite/poly-lactide-co-glycolide. The antibacterial effects of these powders were tested against two pathogenic bacterial strains: Escherichia coi (ATCC 25922) and Staphylococcus aureus (ATCC 25923), using the disc diffusion method and the quantitative antimicrobial test in a liquid medium. The quantitative antimicrobial test showed that all of the tested biomaterials have some antibacterial properties. The effects of both tests were more prominent in case of S. aureus than in E coli. A higher percentage of cobalt in the crystal structure of cobalt-substituted hydroxyapatite nanoparticles led to an increased antimicrobial activity. All of the presented biomaterial samples were found to be non-hemolytic. Having in mind that the tested of cobalt-substituted hydroxyapatite (Ca/Co-HAp) material in given concentrations shows good hemocompatibility and antimicrobial effects, along with its previously studied biological properties, the conclusion can be reached that it is a potential candidate that could substitute calcium hydroxyapatite as the material of choice for use in bone tissue engineering and clinical practices in orthopedic, oral and maxillofacial surgery.
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Savic I, Nikolic V, Savic-Gajic I, Kundakovic T, Stanojkovic T, Najman S. Chemical composition and biological activity of the plum seed extract. ACTA ACUST UNITED AC 2016. [DOI: 10.5937/savteh1602038s] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Barbeck M, Najman S, Stojanović S, Mitić Ž, Živković JM, Choukroun J, Kovačević P, Sader R, James Kirkpatrick C, Ghanaati S. Addition of blood to a phycogenic bone substitute leads to increased
in vivo
vascularization. Biomed Mater 2015; 10:055007. [DOI: 10.1088/1748-6041/10/5/055007] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Damnjanovic I, Najman S, Stojanovic S, Stojanovic D, Veljkovic A, Kocic H, Langerholc T, Damnjanovic Z, Pesic S. Crosstalk between possible cytostatic and antiinflammatory potential of ketoprofen in the treatment of culture of colon and cervix cancer cell lines. ACTA ACUST UNITED AC 2015; 116:227-32. [PMID: 25773949 DOI: 10.4149/bll_2015_044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES The aim of this study was to test the cytostatic potential of ketoprofen in the in vitro treatment of cells derived from colon and cervix cancer. BACKGROUND NF-κB and cyclooxygenase can have a role in different stages of the development and progression of cancer. In recent years, special attention has been paid to the possible cytostatic potential of nonsteroidal anti-inflammatory drugs. There are no published data on the use of ketoprofen in pharmacotherapy of the colon and cervical carcinoma. METHODS We examined the effect of ketoprofen alone or in combination with cisplatin and 5-fluorouracil on proliferation of the two cell lines, HeLa (human cervical carcinoma cells) and Caco-2 (human colon cancer cells) by MTT test. Measurement of the level of NF-κB was also performed in the cells of both cell lines. RESULTS The results of present study have shown that at least one of the mechanisms of antiproliferating and/or cytostatic effects of different concentrations of ketoprofen on Caco-2 and HeLa cells could include the transcription factor NF-κB. CONCLUSIONS Since this transcription factor is controlled by the altered expression of COX-2, the inhibition of this enzyme by ketoprofen may represent a significant step in synergistic cascade of the therapy and prevention of colon and cervical cancer (Tab. 4, Ref. 31).
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Vukelić-Nikolić M, Kolarevć A, Tomović K, Yancheva D, Cherneva E, Najman S, Smelcerović A. Effects on MC3T3-E1 Cells and In silico Toxicological Study of Two 6-(Propan-2-yl)-4-methyl-morpholine-2,5-diones. Nat Prod Commun 2015; 10:1423-1426. [PMID: 26434133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Recently, we found that two cyclodidepsipeptides, 3,6-di-(propan-2-yl)-4-methyl-morpholine-2,5-dione (1) and 3-(2-methylpropyl)-6-(propan-2-yl)-4-methyl- morpholine-2,5-dione (2), are excellent inhibitors of xanthine oxidase. In order to obtain more information about the toxicological potential of compounds 1 and 2 on bone cells, the current study was designed to evaluate the effect of these compounds on viability and proliferation of MC3T3-E1 cells. Compound 1 showed neither cytotoxic nor stimulatory effect on cell viability, while compound 2 showed a slight stimulatory effect on cell viability. Both studied compounds showed slight stimulatory effects on proliferation of MC3T3-E1 cells, in a dose dependent manner. Additionally, an in silico toxicological study of compounds 1 and 2 was performed, and the results indicate that they have a good probability of safe biological intake.
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