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Richert A, Malinowski R, Ringwelska M, Dąbrowska GB. Birch Tar Introduced into Polylactide and Its Influence on the Barrier, Thermal, Functional and Biological Properties of the Film Obtained by Industrial Extrusion. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7382. [PMID: 36295449 PMCID: PMC9609399 DOI: 10.3390/ma15207382] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
The aim of the study was to evaluate possibility of producing a polylactide film with birch tar by the industrial extrusion method and whether the addition of 10% birch tar can ensure adequate biocidal properties of PLA against pathogenic microorganisms (E. coli, S. aureus, P. aeruginosa, A. tumefaciens, X. campestris, P. brassicacearum, P. corrugate and P. syringae) and fungi (A. niger, A. flavus and A. versicolor) while ensuring beneficial functional properties, such as water vapor, nitrogen, oxygen and carbon dioxide permeability, which are of considerable importance in the packaging industry. The main test methods used were ISO 22196, ISO 846, ISO 2556, ASTM F 1927 and ASTM F 2476-20. The obtained results prove the possibility of extruding polymer films with a biocidal additive, i.e., birch tar, and obtaining favorable properties that qualify the produced film for applications in the packaging industry.
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Affiliation(s)
- Agnieszka Richert
- Department of Genetics, Faculty of Biology and Veterinary Science, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
| | - Rafał Malinowski
- Łukasiewicz Research Network—Institute for Engineering of Polymer Materials and Dyes, 87-100 Torun, Poland
| | - Magda Ringwelska
- Department of Genetics, Faculty of Biology and Veterinary Science, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
| | - Grażyna B. Dąbrowska
- Department of Genetics, Faculty of Biology and Veterinary Science, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
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Richert A, Olewnik-Kruszkowska E, Dąbrowska GB, Dąbrowski HP. The Role of Birch Tar in Changing the Physicochemical and Biocidal Properties of Polylactide-Based Films. Int J Mol Sci 2021; 23:ijms23010268. [PMID: 35008694 PMCID: PMC8745625 DOI: 10.3390/ijms23010268] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/23/2021] [Accepted: 12/24/2021] [Indexed: 12/20/2022] Open
Abstract
The objective of this study was to produce bactericidal polymer films containing birch tar (BT). The produced polymer films contain PLA, plasticiser PEG (5% wt.) and birch tar (1, 5 and 10% wt.). Compared to plasticised PLA, films with BT were characterised by reduced elongation at break and reduced water vapour permeability, which was the lowest in the case of film with 10% wt. BT content. Changes in the morphology of the produced materials were observed by performing scanning electron microscopy (SEM) and atomic force microscopy (AFM) analysis; the addition of BT caused the surface of the film to be non-uniform and to contain recesses. FTIR analysis of plasticised PLA/BT films showed that the addition of birch tar did not change the crystallinity of the obtained materials. According to ISO 22196: 2011, the PLA film with 10% wt. BT content showed the highest antibacterial effect against the plant pathogens A. tumefaciens, X. campestris, P. brassicacearum, P. corrugata, P. syringae. It was found that the introduction of birch tar to plasticised PLA leads to a material with biocidal effect and favourable physicochemical and structural properties, which classifies this material for agricultural and horticultural applications.
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Affiliation(s)
- Agnieszka Richert
- Department of Genetics, Faculty of Biology and Veterinary Science, Nicolaus Copernicus University in Toruń, 87-100 Torun, Poland;
- Correspondence: ; Tel.: +48-566114576
| | - Ewa Olewnik-Kruszkowska
- Department of Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 87-100 Torun, Poland;
| | - Grażyna B. Dąbrowska
- Department of Genetics, Faculty of Biology and Veterinary Science, Nicolaus Copernicus University in Toruń, 87-100 Torun, Poland;
| | - Henryk P. Dąbrowski
- Laboratory of Dendrochronology, Archaeological Museum in Biskupin, 88-410 Gasawa, Poland;
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Anodic TiO 2 Nanotubes: Tailoring Osteoinduction via Drug Delivery. NANOMATERIALS 2021; 11:nano11092359. [PMID: 34578675 PMCID: PMC8466263 DOI: 10.3390/nano11092359] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/06/2021] [Accepted: 09/08/2021] [Indexed: 02/07/2023]
Abstract
TiO2 nanostructures and more specifically nanotubes have gained significant attention in biomedical applications, due to their controlled nanoscale topography in the sub-100 nm range, high surface area, chemical resistance, and biocompatibility. Here we review the crucial aspects related to morphology and properties of TiO2 nanotubes obtained by electrochemical anodization of titanium for the biomedical field. Following the discussion of TiO2 nanotopographical characterization, the advantages of anodic TiO2 nanotubes will be introduced, such as their high surface area controlled by the morphological parameters (diameter and length), which provides better adsorption/linkage of bioactive molecules. We further discuss the key interactions with bone-related cells including osteoblast and stem cells in in vitro cell culture conditions, thus evaluating the cell response on various nanotubular structures. In addition, the synergistic effects of electrical stimulation on cells for enhancing bone formation combining with the nanoscale environmental cues from nanotopography will be further discussed. The present review also overviews the current state of drug delivery applications using TiO2 nanotubes for increased osseointegration and discusses the advantages, drawbacks, and prospects of drug delivery applications via these anodic TiO2 nanotubes.
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Wekwejt M, Michalska-Sionkowska M, Bartmański M, Nadolska M, Łukowicz K, Pałubicka A, Osyczka AM, Zieliński A. Influence of several biodegradable components added to pure and nanosilver-doped PMMA bone cements on its biological and mechanical properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111286. [PMID: 32919647 DOI: 10.1016/j.msec.2020.111286] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 07/09/2020] [Accepted: 07/21/2020] [Indexed: 01/11/2023]
Abstract
Acrylic bone cements (BC) are wildly used in medicine. Despite favorable mechanical properties, processability and inject capability, BC lack bioactivity. To overcome this, we investigated the effects of selected biodegradable additives to create a partially-degradable BC and also we evaluated its combination with nanosilver (AgNp). We hypothesized that using above strategies it would be possible to obtain bioactive BC. The Cemex was used as the base material, modified at 2.5, 5 or 10 wt% with either cellulose, chitosan, magnesium, polydioxanone or tricalcium-phosphate. The resulted modified BC was examined for surface morphology, wettability, porosity, mechanical and nanomechanical properties and cytocompatibility. The composite BC doped with AgNp was also examined for its release and antibacterial properties. The results showed that it is possible to create modified cement and all studied modifiers increased its porosity. Applying the additives slightly decreased BC wettability and mechanical properties, but the positive effect of the additives was observed in nanomechanical research. The relatively poor cytocompatibility of modified BC was attributed to the unreacted monomer release, except for polydioxanone modification which increased cells viability. Furthermore, all additives facilitated AgNp release and increased BC antibacterial effectiveness. Our present studies suggest the optimal content of biodegradable component for BC is 5 wt%. At this content, an improvement in BC porosity is achieved without significant deterioration of BC physical and mechanical properties. Polydioxanone and cellulose seem to be the most promising additives that improve porosity and antibacterial properties of antibiotic or nanosilver-loaded BC. Partially-degradable BC may be a good strategy to improve their antibacterial effectiveness, but some caution is still required regarding their cytocompatibility. STATEMENT OF SIGNIFICANCE: The lack of bone cement bioactivity is the main limitation of its effectiveness in medicine. To overcome this, we have created composite cements with partially-degradable properties. We also modified these cements with nanosilver to provide antibacterial properties. We examined five various additives at three different contents to modify a selected bone cement. Our results broaden the knowledge about potential modifiers and properties of composite cements. We selected the optimal content and the most promising additives, and showed that the combination of these additives with nanosilver would increase cements` antibacterial effectiveness. Such modified cements may be a new solution for medical applications.
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Affiliation(s)
- M Wekwejt
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, Gdańsk, Poland.
| | - M Michalska-Sionkowska
- Faculty of Biological and Veterinary Sciences, Department of Environmental Microbiology and Biotechnology, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - M Bartmański
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, Gdańsk, Poland
| | - M Nadolska
- Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Gdańsk, Poland
| | - K Łukowicz
- Institute of Zoology and Biomedical Research, Department of Biology and Cell Imaging, Faculty of Biology, Jagiellonian University, Kraków, Poland
| | - A Pałubicka
- Department of Surgical Oncologic, Medical University of Gdańsk, Gdańsk, Poland; Department of Laboratory Diagnostics and Microbiology with Blood Bank, Specialist Hospital in Kościerzyna, Kościerzyna, Poland
| | - A M Osyczka
- Institute of Zoology and Biomedical Research, Department of Biology and Cell Imaging, Faculty of Biology, Jagiellonian University, Kraków, Poland
| | - A Zieliński
- Biomaterials Division, Department of Materials Engineering and Bonding, Gdańsk University of Technology, Gdańsk, Poland
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Wu F, Xu J, Yan R, Hu B, Li G, Jin M, Jiang X, Li J, Tang P, Zhu J, Yan S. In vitro and in vivo evaluation of antibacterial activity of polyhexamethylene guanidine (PHMG)-loaded TiO 2 nanotubes. ACTA ACUST UNITED AC 2020; 15:045016. [PMID: 32567560 DOI: 10.1088/1748-605x/ab7e79] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Artificial joint replacement is an effective surgical method for treating end-stage degenerative joint diseases, but peripheral bacterial infection of prosthesis can compromise the effect of the surgery. Herein, antibacterial effects of titanium dioxide nanotubes (TNTs) coated with polyhexamethylene guanidine (PHMG) were examined via in vitro and in vivo experiments. TNTs with a pore diameter 46.4 ± 5.9 nm and length of 300-500 nm for the slice and 650-800 nm for the rod were fabricated by anodization. Then, 3.46 ± 0.40 mg and 1.27 ± 0.28 mg of PHMG were coated onto the TNT slice and rod, respectively. In vitro studies of the release of PHMG showed that the antibacterial agent was released in two stages: initial burst release and relatively slow release. In vitro and in vivo antibacterial studies showed that the PHMG-loaded TNTs (PHMG-TNTs) had excellent antibacterial abilities to prevent bacterial infections. Clinical pathological analysis of rabbit femurs indicated that the implanted PHMG-TNTs had no apparent pathological changes. Real-time quantitative reverse transcription polymerase chain reaction analysis of the femur tissues around the implants showed that the expression of osteogenic-related genes, including runt-related transcription factor 2, osteocalcin, alkaline phosphatase, bone sialoprotein, bone morphogenetic protein 2 and vascular endothelial growth factor A, was significantly upregulated in the PHMG-TNT implanted group as compared to the other groups. Overall, these findings provide a promising approach for the fabrication of antibacterial and bone biocompatible titanium-based implants in orthopedics.
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Affiliation(s)
- Fengfeng Wu
- Department of Orthopedics, the Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou 310009, People's Republic of China. Department of Orthopedics and Rehabilitation, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, People's Republic of China. These authors contributed equally to this article
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Selected Functional Properties of Oxo-Degradable Materials Containing Antimicrobial Substances. POLISH JOURNAL OF CHEMICAL TECHNOLOGY 2018. [DOI: 10.2478/pjct-2018-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Polyethylene oxo-degradable composites containing antibacterial substances in the form of vegetable oils: geranium, clove and eucalyptus as well as a mixture of nanoAg with nanoCu were discussed. Antibacterial fi lm: PE-0, PE- 1A, PE-2B, PE-3C, PE-4D properties were verifi ed according to ISO 22196:2011 “Measurement of antibacterial activity on plastic and other non-porous surfaces” for the two standard bacteria species of E. coli and S. aureus, whereas water vapour permeability tests (Pv) were carried out acc. ISO 15106-2007 “Plastics. Foils and plates. Determination of water vapor transmission rate. Part 1: Humidity sensor method”. Film marked PE-4D showed the best antibacterial features and good barrier properties.
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