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Hassan N, Krieg T, Kopp A, Bach AD, Kröger N. Challenges and Pitfalls of Research Designs Involving Magnesium-Based Biomaterials: An Overview. Int J Mol Sci 2024; 25:6242. [PMID: 38892430 PMCID: PMC11172609 DOI: 10.3390/ijms25116242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/31/2024] [Accepted: 06/01/2024] [Indexed: 06/21/2024] Open
Abstract
Magnesium-based biomaterials hold remarkable promise for various clinical applications, offering advantages such as reduced stress-shielding and enhanced bone strengthening and vascular remodeling compared to traditional materials. However, ensuring the quality of preclinical research is crucial for the development of these implants. To achieve implant success, an understanding of the cellular responses post-implantation, proper model selection, and good study design are crucial. There are several challenges to reaching a safe and effective translation of laboratory findings into clinical practice. The utilization of Mg-based biomedical devices eliminates the need for biomaterial removal surgery post-healing and mitigates adverse effects associated with permanent biomaterial implantation. However, the high corrosion rate of Mg-based implants poses challenges such as unexpected degradation, structural failure, hydrogen evolution, alkalization, and cytotoxicity. The biocompatibility and degradability of materials based on magnesium have been studied by many researchers in vitro; however, evaluations addressing the impact of the material in vivo still need to be improved. Several animal models, including rats, rabbits, dogs, and pigs, have been explored to assess the potential of magnesium-based materials. Moreover, strategies such as alloying and coating have been identified to enhance the degradation rate of magnesium-based materials in vivo to transform these challenges into opportunities. This review aims to explore the utilization of Mg implants across various biomedical applications within cellular (in vitro) and animal (in vivo) models.
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Affiliation(s)
- Nourhan Hassan
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital Cologne, 50937 Cologne, Germany
- Institute for Laboratory Animal Science and Experimental Surgery, University of Aachen Medical Center, Faculty of Medicine, RWTH-Aachen University, 52074 Aachen, Germany
- Biotechnology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Thomas Krieg
- Translational Matrix Biology, Medical Faculty, University of Cologne, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50937 Cologne, Germany
- Center for Molecular Medicine (CMMC), University of Cologne, 50937 Cologne, Germany
| | | | - Alexander D. Bach
- Department of Plastic, Aesthetic and Hand Surgery, St. Antonius Hospital Eschweiler, 52249 Eschweiler, Germany
| | - Nadja Kröger
- Institute for Laboratory Animal Science and Experimental Surgery, University of Aachen Medical Center, Faculty of Medicine, RWTH-Aachen University, 52074 Aachen, Germany
- Department of Plastic, Aesthetic and Hand Surgery, St. Antonius Hospital Eschweiler, 52249 Eschweiler, Germany
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2
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Georgescu AM, Corbu VM, Csutak O. Molecular Basis of Yeasts Antimicrobial Activity-Developing Innovative Strategies for Biomedicine and Biocontrol. Curr Issues Mol Biol 2024; 46:4721-4750. [PMID: 38785553 PMCID: PMC11119588 DOI: 10.3390/cimb46050285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/28/2024] [Accepted: 05/11/2024] [Indexed: 05/25/2024] Open
Abstract
In the context of the growing concern regarding the appearance and spread of emerging pathogens with high resistance to chemically synthetized biocides, the development of new agents for crops and human protection has become an emergency. In this context, the yeasts present a huge potential as eco-friendly agents due to their widespread nature in various habitats and to their wide range of antagonistic mechanisms. The present review focuses on some of the major yeast antimicrobial mechanisms, their molecular basis and practical applications in biocontrol and biomedicine. The synthesis of killer toxins, encoded by dsRNA virus-like particles, dsDNA plasmids or chromosomal genes, is encountered in a wide range of yeast species from nature and industry and can affect the development of phytopathogenic fungi and other yeast strains, as well as human pathogenic bacteria. The group of the "red yeasts" is gaining more interest over the last years, not only as natural producers of carotenoids and rhodotorulic acid with active role in cell protection against the oxidative stress, but also due to their ability to inhibit the growth of pathogenic yeasts, fungi and bacteria using these compounds and the mechanism of competition for nutritive substrate. Finally, the biosurfactants produced by yeasts characterized by high stability, specificity and biodegrability have proven abilities to inhibit phytopathogenic fungi growth and mycelia formation and to act as efficient antibacterial and antibiofilm formation agents for biomedicine. In conclusion, the antimicrobial activity of yeasts represents a direction of research with numerous possibilities of bioeconomic valorization as innovative strategies to combat pathogenic microorganisms.
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Affiliation(s)
- Ana-Maria Georgescu
- Department of Genetics, Faculty of Biology, University of Bucharest, Aleea Portocalelor 1-3, 060101 Bucharest, Romania; (A.-M.G.); (V.M.C.)
| | - Viorica Maria Corbu
- Department of Genetics, Faculty of Biology, University of Bucharest, Aleea Portocalelor 1-3, 060101 Bucharest, Romania; (A.-M.G.); (V.M.C.)
- Research Institute of University of Bucharest (ICUB), University of Bucharest, B.P. Hasdeu Street 7, 050568 Bucharest, Romania
| | - Ortansa Csutak
- Department of Genetics, Faculty of Biology, University of Bucharest, Aleea Portocalelor 1-3, 060101 Bucharest, Romania; (A.-M.G.); (V.M.C.)
- Research Institute of University of Bucharest (ICUB), University of Bucharest, B.P. Hasdeu Street 7, 050568 Bucharest, Romania
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3
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Păun AG, Popescu S, Ungureanu C, Trusca R, Pirvu C. Reduced TiO 2 Nanotubes/Silk Fibroin/ZnO as a Promising Hybrid Antibacterial Coating. Chempluschem 2024; 89:e202300450. [PMID: 37888941 DOI: 10.1002/cplu.202300450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 10/28/2023]
Abstract
The current research aims to elucidate the influence of reduction process of TiO2 nanostructures on the surface properties of a bioinspired Ti modified implant, considering that the interface between a biomaterial surface and the living tissue plays an important role for this interaction. The production of reduced TiO2 nanotubes (RNT) with lower band gap is optimized and their performance is compared with those of simple TiO2 nanotubes (NT). The more conductive surfaces provided by the presence of RNT on Ti, allow a facile deposition of silk fibroin (SF) film using the electrochemical deposition method. This hybrid film is then functionalized with ZnO nanoparticles, to improve the antibacterial effect of the coating. The modified Ti surface is evaluated in terms of surface chemistry, morphology and roughness, wettability, surface energy, surface charge and antibacterial properties. Surface analysis such as SEM, AFM, FTIR and contact angle measurements were performed to obtain topographical features and wettability. FT-IR analysis confirms that SF was effectively attached to TiO2 nanotubes surfaces. The electrochemical deposition of SF and SF-ZnO reduced the interior diameter of nanotubes from ~85 nm to approx. 50-60 nm. All modified surfaces have a hydrophilic character.
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Affiliation(s)
- Angela Gabriela Păun
- Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, Gheorghe Polizu 1-7 street, Bucharest, 011061, Romania
| | - Simona Popescu
- Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, Gheorghe Polizu 1-7 street, Bucharest, 011061, Romania
| | - Camelia Ungureanu
- Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, Gheorghe Polizu 1-7 street, Bucharest, 011061, Romania
| | - Roxana Trusca
- National Center for Micro and Nanomaterials, National University of Science and Technology Politehnica Bucharest, Splaiul Independentei 313, 060042, Bucharest, Romania
| | - Cristian Pirvu
- Department of General Chemistry, Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, Gheorghe Polizu 1-7 street, Bucharest, 011061, Romania
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4
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Păun AG, Dumitriu C, Ungureanu C, Popescu S. Silk Fibroin/ZnO Coated TiO 2 Nanotubes for Improved Antimicrobial Effect of Ti Dental Implants. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5855. [PMID: 37687548 PMCID: PMC10488414 DOI: 10.3390/ma16175855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/20/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
The aim of the present research is to develop a novel hybrid coating for a Ti dental implant that combines nature-inspired biomimetic polymers and TiO2 nanostructures with an entrapped ZnO antimicrobial agent. ZnO was used in other studies to cover the surface of Ti or Ti-Zr to reduce the need of clinical antibiotics, prevent the onset of peri-implantitis, and increase the success rate of oral clinical implantation. We developed an original coating that represents a promising approach in clinical dentistry. The titanium surface was first anodized to obtain TiO2 nanotubes (NT). Subsequently, on the NT surface, silk fibroin isolated from Bombyx mori cocoons was deposited as nanofibers using the electrospun technique. For an improved antibacterial effect, ZnO nanoparticles were incorporated in this biopolymer using three different methods. The surface properties of the newly created coatings were assessed to establish how they are influenced by the most important features: morphology, wettability, topography. The evaluation of stability by electrochemical methods in simulated physiological solutions was discussed more in detail, considering that it could bring necessary information related to the behavior of the implant material. All samples had improved roughness and hydrophilicity, as well as corrosion stability (with protection efficiency over 80%). The antibacterial test shows that the functional hybrid coating has good antibacterial activity because it can inhibit the proliferation of Staphylococcus aureus up to 53% and Enterococcus faecalis up to 55%. All Ti samples with the modified surface have proven superior properties compared with unmodified TiNT, which proved that they have the potential to be used as implant material in dentistry.
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Affiliation(s)
| | | | | | - Simona Popescu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, Gheorghe Polizu 1-7 Street, 011061 Bucharest, Romania; (A.G.P.); (C.D.); (C.U.)
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5
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Gulati K, Chopra D, Kocak-Oztug NA, Verron E. Fit and forget: The future of dental implant therapy via nanotechnology. Adv Drug Deliv Rev 2023; 199:114900. [PMID: 37263543 DOI: 10.1016/j.addr.2023.114900] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/11/2023] [Accepted: 05/21/2023] [Indexed: 06/03/2023]
Abstract
Unlike orthopedic implants, dental implants require the orchestration of both osseointegration at the bone-implant interface and soft-tissue integration at the transmucosal region in a complex oral micro-environment with ubiquitous pathogenic bacteria. This represents a very challenging environment for early acceptance and long-term survival of dental implants, especially in compromised patient conditions, including aged, smoking and diabetic patients. Enabling advanced local therapy from the surface of titanium-based dental implants via novel nano-engineering strategies is emerging. This includes anodized nano-engineered implants eluting growth factors, antibiotics, therapeutic nanoparticles and biopolymers to achieve maximum localized therapeutic action. An important criterion is balancing bioactivity enhancement and therapy (like bactericidal efficacy) without causing cytotoxicity. Critical research gaps still need to be addressed to enable the clinical translation of these therapeutic dental implants. This review informs the latest developments, challenges and future directions in this domain to enable the successful fabrication of clinically-translatable therapeutic dental implants that would allow for long-term success, even in compromised patient conditions.
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Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia.
| | - Divya Chopra
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia
| | - Necla Asli Kocak-Oztug
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia; Istanbul University, Faculty of Dentistry, Department of Periodontology, 34116 Istanbul, Turkey
| | - Elise Verron
- Nantes Université, CNRS, CEISAM, UMR 6230, 44000 Nantes, France
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6
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Mapelli-Brahm P, Gómez-Villegas P, Gonda ML, León-Vaz A, León R, Mildenberger J, Rebours C, Saravia V, Vero S, Vila E, Meléndez-Martínez AJ. Microalgae, Seaweeds and Aquatic Bacteria, Archaea, and Yeasts: Sources of Carotenoids with Potential Antioxidant and Anti-Inflammatory Health-Promoting Actions in the Sustainability Era. Mar Drugs 2023; 21:340. [PMID: 37367666 DOI: 10.3390/md21060340] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/28/2023] Open
Abstract
Carotenoids are a large group of health-promoting compounds used in many industrial sectors, such as foods, feeds, pharmaceuticals, cosmetics, nutraceuticals, and colorants. Considering the global population growth and environmental challenges, it is essential to find new sustainable sources of carotenoids beyond those obtained from agriculture. This review focuses on the potential use of marine archaea, bacteria, algae, and yeast as biological factories of carotenoids. A wide variety of carotenoids, including novel ones, were identified in these organisms. The role of carotenoids in marine organisms and their potential health-promoting actions have also been discussed. Marine organisms have a great capacity to synthesize a wide variety of carotenoids, which can be obtained in a renewable manner without depleting natural resources. Thus, it is concluded that they represent a key sustainable source of carotenoids that could help Europe achieve its Green Deal and Recovery Plan. Additionally, the lack of standards, clinical studies, and toxicity analysis reduces the use of marine organisms as sources of traditional and novel carotenoids. Therefore, further research on the processing of marine organisms, the biosynthetic pathways, extraction procedures, and examination of their content is needed to increase carotenoid productivity, document their safety, and decrease costs for their industrial implementation.
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Affiliation(s)
- Paula Mapelli-Brahm
- Food Colour and Quality Laboratory, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Patricia Gómez-Villegas
- Laboratory of Biochemistry, Faculty of Experimental Sciences, Marine International Campus of Excellence and REMSMA, University of Huelva, 21071 Huelva, Spain
| | - Mariana Lourdes Gonda
- Área Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Gral Flores 2124, Montevideo 11800, Uruguay
| | - Antonio León-Vaz
- Laboratory of Biochemistry, Faculty of Experimental Sciences, Marine International Campus of Excellence and REMSMA, University of Huelva, 21071 Huelva, Spain
| | - Rosa León
- Laboratory of Biochemistry, Faculty of Experimental Sciences, Marine International Campus of Excellence and REMSMA, University of Huelva, 21071 Huelva, Spain
| | | | | | - Verónica Saravia
- Departamento de Bioingeniería, Facultad de Ingeniería, Instituto de Ingeniería Química, Universidad de la República, Montevideo 11300, Uruguay
| | - Silvana Vero
- Área Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Gral Flores 2124, Montevideo 11800, Uruguay
| | - Eugenia Vila
- Departamento de Bioingeniería, Facultad de Ingeniería, Instituto de Ingeniería Química, Universidad de la República, Montevideo 11300, Uruguay
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7
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Mussagy CU, Ribeiro HF, Pereira JFB. Rhodotorula sp. as a cell factory for production of valuable biomolecules. ADVANCES IN APPLIED MICROBIOLOGY 2023; 123:133-156. [PMID: 37400173 DOI: 10.1016/bs.aambs.2023.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Rhodotorula sp. are well-known for their ability to biosynthesize a diverse range of valuable biomolecules, including carotenoids, lipids, enzymes, and polysaccharides. Despite the high number of studies conducted using Rhodotorula sp. at the laboratory scale, most of these do not address all processual aspects necessary for scaling up these processes for industrial applications. This chapter explores the potential of Rhodotorula sp. as a cell factory for the production of distinct biomolecules, with a particular emphasis on exploring their use from a biorefinery perspective. Through in-depth discussions of the latest research and insights into non-conventional applications, we aim to provide a comprehensive understanding of Rhodotorula sp.'s ability to produce biofuels, bioplastics, pharmaceuticals, and other valuable biochemicals. This book chapter also examines the fundamentals and challenges associated with the optimizing upstream and downstream processing of Rhodotorula sp-based processes. We believe that through this chapter, readers with different levels of expertise will gain insights into strategies for enhancing the sustainability, efficiency, and effectiveness of producing biomolecules using Rhodotorula sp.
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Affiliation(s)
- Cassamo U Mussagy
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota, Chile.
| | - Helena F Ribeiro
- Department of Chemical Engineering, University of Coimbra, CIEPQPF, Coimbra, Portugal
| | - Jorge F B Pereira
- Department of Chemical Engineering, University of Coimbra, CIEPQPF, Coimbra, Portugal
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Gulati K, Ding C, Guo T, Guo H, Yu H, Liu Y. Craniofacial therapy: advanced local therapies from nano-engineered titanium implants to treat craniofacial conditions. Int J Oral Sci 2023; 15:15. [PMID: 36977679 PMCID: PMC10050545 DOI: 10.1038/s41368-023-00220-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 02/05/2023] [Accepted: 02/28/2023] [Indexed: 03/30/2023] Open
Abstract
Nano-engineering-based tissue regeneration and local therapeutic delivery strategies show significant potential to reduce the health and economic burden associated with craniofacial defects, including traumas and tumours. Critical to the success of such nano-engineered non-resorbable craniofacial implants include load-bearing functioning and survival in complex local trauma conditions. Further, race to invade between multiple cells and pathogens is an important criterion that dictates the fate of the implant. In this pioneering review, we compare the therapeutic efficacy of nano-engineered titanium-based craniofacial implants towards maximised local therapy addressing bone formation/resorption, soft-tissue integration, bacterial infection and cancers/tumours. We present the various strategies to engineer titanium-based craniofacial implants in the macro-, micro- and nano-scales, using topographical, chemical, electrochemical, biological and therapeutic modifications. A particular focus is electrochemically anodised titanium implants with controlled nanotopographies that enable tailored and enhanced bioactivity and local therapeutic release. Next, we review the clinical translation challenges associated with such implants. This review will inform the readers of the latest developments and challenges related to therapeutic nano-engineered craniofacial implants.
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Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, QLD, Australia
| | - Chengye Ding
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
| | - Tianqi Guo
- The University of Queensland, School of Dentistry, Herston, QLD, Australia
| | - Houzuo Guo
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China
- Department of Oral Implantology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Huajie Yu
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China.
- Fourth Clinical Division, Peking University School and Hospital of Stomatology, Beijing, China.
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China.
- National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental Materials, Beijing, China.
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Effects of torularhodin against acetaminophen induced liver injury base on antioxidation, anti-inflammation and anti-apoptosis. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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10
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Benítez M, Zubiate P, Del Villar I, Socorro-Leránoz AB, Matías IR. Lossy Mode Resonance Based Microfluidic Platform Developed on Planar Waveguide for Biosensing Applications. BIOSENSORS 2022; 12:bios12060403. [PMID: 35735551 PMCID: PMC9221500 DOI: 10.3390/bios12060403] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022]
Abstract
The development of resonance phenomena-based optical biosensors has gained relevance in recent years due to the excellent optical fiber properties and progress in the research on materials and techniques that allow resonance generation. However, for lossy mode resonance (LMR)-based sensors, the optical fiber presents disadvantages, such as the need for splicing the sensor head and the complex polarization control. To avoid these issues, planar waveguides such as coverslips are easier to handle, cost-effective, and more robust structures. In this work, a microfluidic LMR-based planar waveguide platform was proposed, and its use for biosensing applications was evaluated by detecting anti-immunoglobulin G (anti-IgG). In order to generate the wavelength resonance, the sensor surface was coated with a titanium dioxide (TiO2) thin-film. IgG antibodies were immobilized by covalent binding, and the detection assay was carried out by injecting anti-IgG in PBS buffer solutions from 5 to 20 μg/mL. The LMR wavelength shifted to higher values when increasing the analyte concentration, which means that the proposed system was able to detect the IgG/anti-IgG binding. The calibration curve was built from the experimental data obtained in three repetitions of the assay. In this way, a prototype of an LMR-based biosensing microfluidic platform developed on planar substrates was obtained for the first time.
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Affiliation(s)
- Melanys Benítez
- Department of Electrical, Electronic and Communication Engineering, Public University of Navarra, Ed. Los Tejos, Campus Arrosadía s/n, E-31006 Pamplona, Spain; (M.B.); (P.Z.); (I.D.V.); (A.B.S.-L.)
| | - Pablo Zubiate
- Department of Electrical, Electronic and Communication Engineering, Public University of Navarra, Ed. Los Tejos, Campus Arrosadía s/n, E-31006 Pamplona, Spain; (M.B.); (P.Z.); (I.D.V.); (A.B.S.-L.)
| | - Ignacio Del Villar
- Department of Electrical, Electronic and Communication Engineering, Public University of Navarra, Ed. Los Tejos, Campus Arrosadía s/n, E-31006 Pamplona, Spain; (M.B.); (P.Z.); (I.D.V.); (A.B.S.-L.)
- Institute of Smart Cities, Public University of Navarra, Ed. Jerónimo de Ayanz, Campus of Arrosadía s/n, E-31006 Pamplona, Spain
| | - Abián B. Socorro-Leránoz
- Department of Electrical, Electronic and Communication Engineering, Public University of Navarra, Ed. Los Tejos, Campus Arrosadía s/n, E-31006 Pamplona, Spain; (M.B.); (P.Z.); (I.D.V.); (A.B.S.-L.)
- Institute of Smart Cities, Public University of Navarra, Ed. Jerónimo de Ayanz, Campus of Arrosadía s/n, E-31006 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNa), Recinto de Complejo Hospitalario de Navarra, C/Irunlarrea, 3, E-31008 Pamplona, Spain
| | - Ignacio R. Matías
- Department of Electrical, Electronic and Communication Engineering, Public University of Navarra, Ed. Los Tejos, Campus Arrosadía s/n, E-31006 Pamplona, Spain; (M.B.); (P.Z.); (I.D.V.); (A.B.S.-L.)
- Institute of Smart Cities, Public University of Navarra, Ed. Jerónimo de Ayanz, Campus of Arrosadía s/n, E-31006 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNa), Recinto de Complejo Hospitalario de Navarra, C/Irunlarrea, 3, E-31008 Pamplona, Spain
- Correspondence: ; Tel.: +34-948-166-044
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11
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Li J, Qian H, Pi F, Wang BX. Bioavailability evaluation of the intestinal absorption and liver accumulation of torularhodin using a rat postprandial model. Food Funct 2022; 13:5946-5952. [PMID: 35617027 DOI: 10.1039/d1fo03707b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Torularhodin, as a new functional carotenoid, possesses great application potential in disease intervention. However, its absorption process and corresponding mechanism have not been studied. In this study, a rat postprandial model was established to explore the absorption and mechanism of torularhodin by investigating the bioavailability of torularhodin in different tissues, the expression of related enzymes and several transporters in the intestine. The results showed that torularhodin entered the intestine faster from micelles (45.21 ± 2.61% was absorbed in the duodenum), and part of it was metabolized into retinol in the anterior segment of the intestine. The expression of genes indicated that absorption of torularhodin in the intestine might require transporter CD36 and SR-B1. The special structure and target organ might be speculated to be the main reason for the low bioavailability of torularhodin in the serum and liver. The results could lay a theoretical foundation for the chemical modification, carrier and subsequent development of torularhodin.
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Affiliation(s)
- Jiayi Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China. .,School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi Jiangsu 214122, People's Republic of China
| | - He Qian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China. .,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi Jiangsu 214122, People's Republic of China
| | - Fuwei Pi
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China. .,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi Jiangsu 214122, People's Republic of China
| | - Ben-Xin Wang
- School of Science, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China.
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12
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Li C, Xu Y, Li Z, Cheng P, Yu G. Transcriptomic and metabolomic analysis reveals the potential mechanisms underlying the improvement of β-carotene and torulene production in Rhodosporidiobolus colostri under low temperature treatment. Food Res Int 2022; 156:111158. [DOI: 10.1016/j.foodres.2022.111158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 11/26/2022]
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Mussagy CU, Gonzalez-Miquel M, Santos-Ebinuma VC, Pereira JFB. Microbial torularhodin – a comprehensive review. Crit Rev Biotechnol 2022; 43:540-558. [PMID: 35430937 DOI: 10.1080/07388551.2022.2041540] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The demand for food, feed, cosmeceutical, and nutraceutical supplements/additives from natural sources has been rapidly increasing, with expectations for a faster expansion than the growth of the global markets in the coming years. In this framework, a particular interest is given to carotenoids due to their outstanding antioxidant activities, particularly the xanthophylls class. Torularhodin is one of these carotenoids that stands out for its multifunctional role as: antioxidant, anticancer and antimicrobial, yet its commercial potential is still unexplored. Although most xanthophylls can be naturally found in: microbial, plant and animal sources, torularhodin is only produced by microbial species, especially red oleaginous yeast. The microbial production of xanthophylls has many advantages as compared to other natural sources, such as: the need for low production area, easier extraction, high yields (at optimum operating conditions), and low (or no) seasonal, climatic, and geographic variation dependency. Due to the importance of natural products and their relevance to the market, this review provides a comprehensive overview of the: properties, characteristics and potential health benefits of torularhodin. Moreover, the most promising developments in both upstream and downstream processing to obtain this colorant from microbial sources are considered. For this purpose, the main microorganisms used for torularhodin production are firstly reviewed, including biosynthesis pathway and torularhodin properties. Following, an overall analysis of the processing aspects related with its: extraction, separation and purification is provided. Lastly, current status and future trends of torularhodin-based processes and products such as therapeutic agents or biomaterials are discussed, indicating promising directions toward biorefinery and circular economy.
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Affiliation(s)
- Cassamo U. Mussagy
- Department of Pharmaceutical-Biochemical Technology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Department of Engineering of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Maria Gonzalez-Miquel
- Department of Chemical and Environmental Engineering, Universidad Politécnica de Madrid, Higher Technical School of Industrial Engineers, Madrid, Spain
| | - Valeria C. Santos-Ebinuma
- Department of Engineering of Bioprocesses and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Jorge F. B. Pereira
- Department of Chemical Engineering, Rua Sílvio Lima, University of Coimbra, CIEPQPF, Coimbra, Portugal
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Negrescu AM, Mitran V, Draghicescu W, Popescu S, Pirvu C, Ionascu I, Soare T, Uzun S, Croitoru SM, Cimpean A. TiO2 Nanotubes Functionalized with Icariin for an Attenuated In Vitro Immune Response and Improved In Vivo Osseointegration. J Funct Biomater 2022; 13:jfb13020043. [PMID: 35466225 PMCID: PMC9036299 DOI: 10.3390/jfb13020043] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 12/30/2022] Open
Abstract
Due to their superior mechanical and chemical properties, titanium (Ti) and its alloys have been widely used as orthopedic implantable devices. However, their bioinertness represents a limitation, which can be overcome by employing various surface modifications, such as TiO2 nanotube (TNT) fabrication via electrochemical anodization. Anodic TNTs present tunable dimensions and unique structures, turning them into feasible drug delivery platforms. In the present work, TNTs were loaded with icariin (Ica) through an adhesive intermediate layer of polydopamine (DP), and their in vitro and in vivo biological performance was evaluated. The successful fabrication of the modified surfaces was verified by scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), and contact angle measurements (CA), while the in vitro release of Ica was evaluated via UV-VIS spectrophotometry. In terms of in vitro behaviour, comparative studies on RAW 264.7 macrophages demonstrated that the TNT substrates, especially TNT-DP-Ica, elicited a lower inflammatory response compared to the Ti support. Moreover, the in vivo implantation studies evinced generation of a reduced fibrotic capsule around this implant and increased thickness of the newly formed bone tissue at 1 month and 3 months post-implantation, respectively. Overall, our results indicate that the controlled release of Ica from TNT surfaces could result in an improved osseointegration process.
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Affiliation(s)
- Andreea-Mariana Negrescu
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania; (A.-M.N.); (V.M.)
| | - Valentina Mitran
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania; (A.-M.N.); (V.M.)
| | - Wanda Draghicescu
- Faculty of Chemical Engineering and Biotechnology, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania; (W.D.); (S.P.); (C.P.)
| | - Simona Popescu
- Faculty of Chemical Engineering and Biotechnology, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania; (W.D.); (S.P.); (C.P.)
| | - Cristian Pirvu
- Faculty of Chemical Engineering and Biotechnology, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania; (W.D.); (S.P.); (C.P.)
- Faculty of Medical Engineering, University Politehnica of Bucharest, 1-7 Polizu, 011061 Bucharest, Romania
| | - Iuliana Ionascu
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 105 Spl. Independentei, 050097 Bucharest, Romania; (I.I.); (T.S.); (S.U.)
| | - Teodoru Soare
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 105 Spl. Independentei, 050097 Bucharest, Romania; (I.I.); (T.S.); (S.U.)
| | - Seralp Uzun
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 105 Spl. Independentei, 050097 Bucharest, Romania; (I.I.); (T.S.); (S.U.)
| | - Sorin Mihai Croitoru
- Machines and Manufacturing Systems Department, University Politehnica of Bucharest, 313 Spl. Independentei, 060042 Bucharest, Romania;
| | - Anisoara Cimpean
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania; (A.-M.N.); (V.M.)
- Correspondence: ; Tel.: +40-21-318-1575 (ext. 106)
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15
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Effect of Selected Cations and B Vitamins on the Biosynthesis of Carotenoids by Rhodotorula mucilaginosa Yeast in the Media with Agro-Industrial Wastes. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112411886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In recent years, there has been an increase in the search for novel raw materials for the production of natural carotenoids. Among yeasts, Rhodotorula species have the ability to synthesize carotenoids, mainly β-carotene, torulene, and torularhodin, depending on the culture conditions. This study aimed to determine the effect of selected cations (barium, zinc, aluminum, manganese) and B vitamins (biotin, riboflavin, niacin, pantothenic acid) on the biosynthesis of carotenoids by Rhodotorula mucilaginosa MK1 and estimate the percentages of β-carotene, torulene, and torularhodin synthesized by the yeast. The cultivation was carried out in a medium containing glycerol (waste resulting from biodiesel production) as a carbon source and potato wastewater (waste resulting from potato starch production) as a nitrogen source. Carotenoid biosynthesis was stimulated by the addition of aluminum (300 mg/L) or aluminum (300 mg/L) and niacin (100 µg/L) to the medium. The number of carotenoids produced by R. mucilaginosa MK1 in the medium containing only aluminum and in the medium with aluminum and niacin was 146.7 and 180.5 µg/gd.m., respectively. This content was 101% and 147% higher compared to the content of carotenoids produced by yeast grown in the control medium (73.0 µg/gd.m.). The addition of aluminum and barium seemed to have a positive effect on the biosynthesis of torulene, and the percentage of this compound increased from 31.86% to 75.20% and 68.24%, respectively. Niacin supplementation to the medium increased the percentage of torularhodin produced by the yeast from 23.31% to 31.59–33.79%. The conducted study showed that there is a possibility of intensifying carotenoid biosynthesis by red yeast and changing the percentages of individual carotenoids fractions by adding cations or B vitamins to the medium. Further research is needed to explain the mechanism of action of niacin on the stimulation of torularhodin biosynthesis.
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16
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Li C, Cheng P, Sun Y, Qin D, Yu G. High-Quality Genome Assembly of Oleaginous Red Yeast Sporobolomyces roseus CGMCC 2.4355. Genome Biol Evol 2021; 13:6433157. [PMID: 34864973 PMCID: PMC8643702 DOI: 10.1093/gbe/evab258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2021] [Indexed: 11/20/2022] Open
Abstract
Sporobolomyces roseus is an important oleaginous red yeast with critical biotechnological applications and has received significant recognition as a valuable source of industrial enzymes, carotenoids, and lipids. To reveal the genetic basis and functional components underlying its biotechnological applications, a high-quality genome assembly is required. Here, we present a novel genome assembly of S. roseus CGMCC 2.4355 using a combination of Illunima and Oxford Nanopore technologies. The genome has an assembly size of 21.4 Mb and consists of 15 scaffolds with an N50 length of 2,126,566 bp and GC content of 49.52%. The assembly is of high integrity, comprising 95.2% complete Benchmarking Universal Single-Copy Orthologs (BUSCOs) as evaluated by a genome completeness assessment. The genome was predicted to contain 8,124 protein-coding genes, 6,890 of which were functionally annotated. We believe that the combination of our analyses and high-quality genome assembly will promote the basic development of S. roseus as an agent for biotechnological applications and make a significant contribution to assess the evolutionary relationship of Sporobolomyces species.
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Affiliation(s)
- Chunji Li
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Ping Cheng
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yunhao Sun
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Di Qin
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Guohui Yu
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, China.,College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, China
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17
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Li C, Cheng P, Li Z, Xu Y, Sun Y, Qin D, Yu G. Transcriptomic and Metabolomic Analyses Provide Insights into the Enhancement of Torulene and Torularhodin Production in Rhodotorula glutinis ZHK under Moderate Salt Conditions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11523-11533. [PMID: 34545740 DOI: 10.1021/acs.jafc.1c04028] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Carotenoids are a group of tetraterpene pigments widely used in the food, pharmaceutical, and cosmetic industries. Torulene, torularhodin, and β-carotene, three principal carotenoids synthesized by Rhodotorula glutinis ZHK, possess strong health-promoting properties such as antioxidant, provitamin A, and antitumor. Here, the effect of different salt conditions on carotenoids production of R. glutinisZHK was investigated. The results showed that the total carotenoids were significantly enhanced in 0.5 M (3.91 mg/L) and 0.75 M (5.41 mg/L) NaCl treatments than that in 1.0 M (0.35 mg/L) and control (1.42 mg/L) after 120 h of cultivation. Of which, the increase in torulene and torularhodin production acts as the main contributor to the enhancement of total carotenoids. Transcriptome profiling revealed that salt stress efficiently promotes the gene expression of crtI, which could explain the molecular mechanisms of the enhanced torulene and torularhodin production under salt stress. Further experiments indicated that torulene and torularhodin play an important role in quenching excrescent reactive oxygen species induced by salt stress. Together, the present study reports an effective strategy for simultaneously improving torulene and torularhodin production in R. glutinis ZHK.
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Affiliation(s)
- Chunji Li
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Ping Cheng
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Zhiheng Li
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Yuzhao Xu
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Yunhao Sun
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Di Qin
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
| | - Guohui Yu
- Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China
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18
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Rodrigues MA, Cortez AR, Cortez J, Gobbo P, Łępicka M, Barros-Silva S, Freitas PP, Lopes MA, Mendes J. Antimicrobial profile of a dental implant abutment coating to prevent adhesion and migration of bacteria and screw loosening. Dent Mater 2021; 37:e493-e501. [PMID: 34479725 DOI: 10.1016/j.dental.2021.08.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 08/17/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Failure of dental implants treatment is frequently the result of bacterial colonization of implants followed by diseases like peri-implantitis. Recent studies have been made regarding the surface treatment of implants components, namely abutments that are in the interface of the living tissue with the implant. This work aimed at evaluating the antimicrobial profile of a silane-based coating with TiO2 adapted to an abutment screw, that was also developed as an anti-loosening agent, to prevent adhesion and migration of Gram + and Gram-bacteria, Staphylococcus aureus, and Escherichia coli, respectively. METHODS Direct contact antimicrobial studies were conducted on coated and uncoated samples by resazurin fluorescent assay and cytotoxicity assessment was done via MTT indirect method on days 1 and 4. Sterilizations studies by FTIR analysis were also performed to understand the ideal balance between sterilization efficacy and coating functionality subjecting the samples to ethylene oxide, gamma irradiation, and autoclave sterilization, before antimicrobial testing. The implant system as a whole was also studied for its ability to block bacterial migration and preventing microleakage as well as an assessment of initial bacterial adhesion evaluated by scanning electron microscopy. RESULTS Direct contact studies performed on coated samples showed a very high antimicrobial activity, while cytotoxicity assays revealed the coating to be safe and non-leachable. Sterilizations studies showed that the antimicrobial features of the coating were preserved and interchangeable regardless of the sterilization method. The implant system migration studies demonstrated that the implant system works as an efficient barrier for the studied bacteria. SIGNIFICANCE The acquired results clearly show that it is possible to obtain a highly functional coating with obvious and marked antimicrobial features that together with an abutment that prevents bacterial migration and versatility in sterilization methodology has a very high potential in the dental implant field.
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Affiliation(s)
- M A Rodrigues
- LAQV - REQUIMTE, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - A R Cortez
- CELOPLÁS, Plásticos para a Indústria S.A., Rua de S. Mateus, 4775-127 Grimancelos, Portugal
| | - J Cortez
- CELOPLÁS, Plásticos para a Indústria S.A., Rua de S. Mateus, 4775-127 Grimancelos, Portugal
| | - P Gobbo
- GADGETWHISPER, LDA, Rua Dr Afonso Cordeiro, 4450-007 Matosinhos, Portugal
| | - M Łępicka
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga, 4715-330 Braga, Portugal; Bialystok University of Technology, Faculty of Mechanical Engineering, Institute of Mechanical Engineering, Wiejska 45C, 15-351 Bialystok, Poland
| | - S Barros-Silva
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga, 4715-330 Braga, Portugal
| | - P P Freitas
- International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga, 4715-330 Braga, Portugal
| | - M A Lopes
- LAQV - REQUIMTE, Departamento de Engenharia Metalúrgica e Materiais, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - J Mendes
- Faculdade de Engenharia, Universidade do Porto, Porto, Portugal; LABIOMEP, INEGI-LAETA, Porto, Portugal
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Gulati K, Zhang Y, Di P, Liu Y, Ivanovski S. Research to Clinics: Clinical Translation Considerations for Anodized Nano-Engineered Titanium Implants. ACS Biomater Sci Eng 2021; 8:4077-4091. [PMID: 34313123 DOI: 10.1021/acsbiomaterials.1c00529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Titania nanotubes (TNTs) fabricated on titanium orthopedic and dental implants have shown significant potential in "proof of concept" in vitro, ex vivo, and short-term in vivo studies. However, most studies do not focus on a clear direction for future research towards clinical translation, and there exists a knowledge gap in identifying key research challenges that must be addressed to progress to the clinical setting. This review focuses on such challenges with respect to anodized titanium implants modified with TNTs, including optimized fabrication on clinically utilized microrough surfaces, clinically relevant bioactivity assessments, and controlled/tailored local release of therapeutics. Further, long-term in vivo investigations in compromised animal models under loading conditions are needed. We also discuss and detail challenges and progress related to the mechanical stability of TNT-based implants, corrosion resistance/electrochemical stability, optimized cleaning/sterilization, packaging/aging, and nanotoxicity concerns. This extensive, clinical translation focused review of TNTs modified Ti implants aims to foster improved understanding of key research gaps and advances, informing future research in this domain.
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Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, Queensland 4006, Australia
| | - Yifan Zhang
- Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Ping Di
- Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Diseases and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yan Liu
- Laboratory of Biomimetic Nanomaterials, Department of Orthodontics, Peking University School and Hospital of Stomatology, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Sašo Ivanovski
- The University of Queensland, School of Dentistry, Herston, Queensland 4006, Australia
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20
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Ungureanu C, Barbulescu L, Dumitriu C, Manole C, Pirvu C. Titanium industrial residues surface modification towards its reuse as antimicrobial surfaces. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:38224-38237. [PMID: 33733411 DOI: 10.1007/s11356-021-13359-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
In this study, a new material obtained from titanium ingots residue was coated with natural carotenoids having antibacterial properties. The waste is a no recycling titanium scrap from technological production process which was pressed and transformed into disks titanium samples. Through anodization and annealing procedures of the titanium disk, a nanostructured titanium dioxide surface with photocatalytic and antibacterial properties was successfully obtained. The titanium scrap impurities (V, Al, and N), unwanted for production process, have shown to improve electrochemical and semiconductor properties of the residue surfaces. The nanostructured titanium scrap surface was modified with two different carotenoids, torularhodin and β-carotene, to potentiate the antibacterial properties. The bactericidal tests were performed against Salmonella typhimurium and Escherichia coli, both Gram-negative. The best bactericidal effect is obtained for nanostructured titanium scrap disks immersed in torularhodin, with a percentage of growth inhibition around 60% against both tested bacteria. The results suggest that this low-cost waste material is suitable for efficient reuse as antibacterial surface after a few simple and inexpensive treatments.
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Affiliation(s)
- Camelia Ungureanu
- General Chemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu, 011061, Bucharest, Romania
| | - Laura Barbulescu
- General Chemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu, 011061, Bucharest, Romania
- National Research & Development Institute for Non-Ferrous and Rare Metals, 102 Biruintei Blvd, 077145, Pantelimon, Ilfov, Romania
| | - Cristina Dumitriu
- General Chemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu, 011061, Bucharest, Romania
| | - Claudiu Manole
- General Chemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu, 011061, Bucharest, Romania
| | - Cristian Pirvu
- General Chemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, 1-7 Polizu, 011061, Bucharest, Romania.
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21
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Precipitation at Room Temperature as a Fast and Versatile Method for Calcium Phosphate/TiO 2 Nanocomposites Synthesis. NANOMATERIALS 2021; 11:nano11061523. [PMID: 34207588 PMCID: PMC8230063 DOI: 10.3390/nano11061523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/24/2021] [Accepted: 06/07/2021] [Indexed: 11/16/2022]
Abstract
The constantly growing need for advanced bone regeneration materials has motivated the development of calcium phosphates (CaPs) composites with a different metal or metal-oxide nanomaterials and their economical and environmentally friendly production. Here, two procedures for the synthesis of CaPs composites with TiO2 nanoplates (TiNPl) and nanowires (TiNWs) were tested, with the immersion of TiO2 nanomaterials (TiNMs) in corrected simulated body fluid (c-SBF) and precipitation of CaP in the presence of TiNMs. The materials obtained were analyzed by powder X-ray diffraction, spectroscopic and microscopic techniques, Brunauer–Emmett–Teller surface area analysis, thermogravimetric analysis, dynamic and electrophoretic light scattering, and their hemocompatibility and ability to induce reactive oxygen species were evaluated. After 28 days of immersion in c-SBF, no significant CaP coating was formed on TiNMs. However, the composites with calcium-deficient apatite (CaDHA) were obtained after one hour in the spontaneous precipitation system. In the absence of TiNMs, CaDHA was also formed, indicating that control of the CaP phase formed can be accomplished by fine-tuning conditions in the precipitation system. Although the morphology and size of crystalline domains of CaDHA obtained on the different nanomaterials differed, no significant difference was detected in their local structure. Composites showed low reactive oxygen species (ROS) production and did not induce hemolysis. The results obtained indicate that precipitation is a suitable and fast method for the preparation of CaPs/TiNMs nanocomposites which shows great potential for biomedical applications.
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22
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Understanding and optimizing the antibacterial functions of anodized nano-engineered titanium implants. Acta Biomater 2021; 127:80-101. [PMID: 33744499 DOI: 10.1016/j.actbio.2021.03.027] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/07/2021] [Accepted: 03/10/2021] [Indexed: 12/15/2022]
Abstract
Nanoscale surface modification of titanium-based orthopaedic and dental implants is routinely applied to augment bioactivity, however, as is the case with other cells, bacterial adhesion is increased on nano-rough surfaces. Electrochemically anodized Ti implants with titania nanotubes (TNTs) have been proposed as an ideal implant surface with desirable bioactivity and local drug release functions to target various conditions. However, a comprehensive state of the art overview of why and how such TNTs-Ti implants acquire antibacterial functions, and an in-depth knowledge of how topography, chemistry and local elution of potent antibiotic agents influence such functions has not been reported. This review discusses and details the application of nano-engineered Ti implants modified with TNTs for maximum local antibacterial functions, deciphering the interdependence of various characteristics and the fine-tuning of different parameters to minimize cytotoxicity. An ideal implant surface should cater simultaneously to ossoeintegration (and soft-tissue integration for dental implants), immunomodulation and antibacterial functions. We also evaluate the effectiveness and challenges associated with such synergistic functions from modified TNTs-implants. Particular focus is placed on the metallic and semi-metallic modification of TNTs towards enabling bactericidal properties, which is often dose dependent. Additionally, there are concerns over the cytotoxicity of these therapies. In that light, research challenges in this domain and expectations from the next generation of customizable antibacterial TNTs implants towards clinical translation are critically evaluated. STATEMENT OF SIGNIFICANCE: One of the major causes of titanium orthopaedic/dental implant failure is bacterial colonization and infection, which results in complete implant failure and the need for revision surgery and re-implantation. Using advanced nanotechnology, controlled nanotopographies have been fabricated on Ti implants, for instance anodized nanotubes, which can accommodate and locally elute potent antibiotic agents. In this pioneering review, we shine light on the topographical, chemical and therapeutic aspects of antibacterial nanotubes towards achieving desirable tailored antibacterial efficacy without cytotoxicity concerns. This interdisciplinary review will appeal to researchers from the wider scientific community interested in biomaterials science, structure and function, and will provide an improved understanding of controlling bacterial infection around nano-engineered implants, aimed at bridging the gap between research and clinics.
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23
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Balasubramaniam B, Prateek, Ranjan S, Saraf M, Kar P, Singh SP, Thakur VK, Singh A, Gupta RK. Antibacterial and Antiviral Functional Materials: Chemistry and Biological Activity toward Tackling COVID-19-like Pandemics. ACS Pharmacol Transl Sci 2021; 4:8-54. [PMID: 33615160 PMCID: PMC7784665 DOI: 10.1021/acsptsci.0c00174] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Indexed: 12/12/2022]
Abstract
The ongoing worldwide pandemic due to COVID-19 has created awareness toward ensuring best practices to avoid the spread of microorganisms. In this regard, the research on creating a surface which destroys or inhibits the adherence of microbial/viral entities has gained renewed interest. Although many research reports are available on the antibacterial materials or coatings, there is a relatively small amount of data available on the use of antiviral materials. However, with more research geared toward this area, new information is being added to the literature every day. The combination of antibacterial and antiviral chemical entities represents a potentially path-breaking intervention to mitigate the spread of disease-causing agents. In this review, we have surveyed antibacterial and antiviral materials of various classes such as small-molecule organics, synthetic and biodegradable polymers, silver, TiO2, and copper-derived chemicals. The surface protection mechanisms of the materials against the pathogen colonies are discussed in detail, which highlights the key differences that could determine the parameters that would govern the future development of advanced antibacterial and antiviral materials and surfaces.
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Affiliation(s)
| | - Prateek
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Sudhir Ranjan
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Mohit Saraf
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Prasenjit Kar
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Surya Pratap Singh
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Vijay Kumar Thakur
- Biorefining
and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Anand Singh
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Raju Kumar Gupta
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
- Center
for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
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Rapoport A, Guzhova I, Bernetti L, Buzzini P, Kieliszek M, Kot AM. Carotenoids and Some Other Pigments from Fungi and Yeasts. Metabolites 2021; 11:92. [PMID: 33561985 PMCID: PMC7915786 DOI: 10.3390/metabo11020092] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/13/2021] [Accepted: 02/03/2021] [Indexed: 12/11/2022] Open
Abstract
Carotenoids are an essential group of compounds that may be obtained by microbiological synthesis. They are instrumental in various areas of industry, medicine, agriculture, and ecology. The increase of carotenoids' demand at the global market is now essential. At the moment, the production of natural carotenoids is more expensive than obtaining their synthetic forms, but several new approaches/directions on how to decrease this difference were developed during the last decades. This review briefly describes the information accumulated until now about the beneficial effects of carotenoids on human health protection, their possible application in the treatments of various diseases, and their use in the food and feed industry. This review also describes some issues that are linked with biotechnological production of fungal and yeasts carotenoids, as well as new approaches/directions to make their biotechnological production more efficient.
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Affiliation(s)
- Alexander Rapoport
- Laboratory of Cell Biology, Institute of Microbiology and Biotechnology, University of Latvia, Jelgavas Str. 1-537, LV-1004 Riga, Latvia
| | - Irina Guzhova
- Laboratory of Cell Protective Mechanisms, Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Avenue 4, 194064 Saint Petersburg, Russia;
| | - Lorenzo Bernetti
- Department of Agricultural, Food and Environmental Sciences and Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy; (L.B.); (P.B.)
| | - Pietro Buzzini
- Department of Agricultural, Food and Environmental Sciences and Industrial Yeasts Collection DBVPG, University of Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy; (L.B.); (P.B.)
| | - Marek Kieliszek
- Department of Food Biotechnology and Microbiology, Institute of Food Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159C, 02-776 Warsaw, Poland;
| | - Anna Maria Kot
- Department of Food Biotechnology and Microbiology, Institute of Food Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159C, 02-776 Warsaw, Poland;
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Genomics and lipidomics analysis of the biotechnologically important oleaginous red yeast Rhodotorula glutinis ZHK provides new insights into its lipid and carotenoid metabolism. BMC Genomics 2020; 21:834. [PMID: 33243144 PMCID: PMC7690147 DOI: 10.1186/s12864-020-07244-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 11/18/2020] [Indexed: 11/26/2022] Open
Abstract
Background Rhodotorula glutinis is recognized as a biotechnologically important oleaginous red yeast, which synthesizes numerous meritorious compounds with wide industrial usages. One of the most notable properties of R. glutinis is the formation of intracellular lipid droplets full of carotenoids. However, the basic genomic features that underlie the biosynthesis of these valuable compounds in R. glutinis have not been fully documented. To reveal the biotechnological potential of R. glutinis, the genomics and lipidomics analysis was performed through the Next-Generation Sequencing and HPLC-MS-based metabolomics technologies. Results Here, we firstly assemble the genome of R. glutinis ZHK into 21.8 Mb, containing 30 scaffolds and 6774 predicted genes with a N50 length of 14, 66,672 bp and GC content of 67.8%. Genome completeness assessment (BUSCO alignment: 95.3%) indicated the genome assembly with a high-quality features. According to the functional annotation of the genome, we predicted several key genes involved in lipids and carotenoids metabolism as well as certain industrial enzymes biosynthesis. Comparative genomics results suggested that most of orthologous genes have underwent the strong purifying selection within the five Rhodotorula species, especially genes responsible for carotenoids biosynthesis. Furthermore, a total of 982 lipids were identified using the lipidomics approaches, mainly including triacylglycerols, diacylglyceryltrimethylhomo-ser and phosphatidylethanolamine. Conclusion Using whole genome shotgun sequencing, we comprehensively analyzed the genome of R. glutinis and predicted several key genes involved in lipids and carotenoids metabolism. By performing comparative genomic analysis, we show that most of the ortholog genes have undergone strong purifying selection within the five Rhodotorula species. Furthermore, we identified 982 lipid species using lipidomic approaches. These results provided valuable resources to further advance biotechnological applications of R .glutinis. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07244-z.
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Vargas-Sinisterra AF, Ramírez-Castrillón M. Yeast carotenoids: production and activity as antimicrobial biomolecule. Arch Microbiol 2020; 203:873-888. [PMID: 33151382 DOI: 10.1007/s00203-020-02111-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/18/2020] [Accepted: 10/23/2020] [Indexed: 10/23/2022]
Abstract
Carotenoids are a large group of organic, pigmented, isoprenoid-type compounds that play biological activities in plants and microorganisms (yeasts, bacteria, and microalgae). Literature reported it as vitamin A precursors and antioxidant activity. Carotenoids also can act as antimicrobial agents and few reports showed quantitative measurements of Minimal Inhibitory Concentrations against different pathogens. In this sense, some carotenoids were added to medical-surgical materials. The demand for scale-up of different naturally obtained carotenoids has increased due to the concern about the detrimental health effects caused by synthetic molecules and antimicrobial resistance. In this review, we reported the variability in pigment production and culture conditions, extraction methods used in laboratory, and we discussed the antimicrobial activity carried out by these molecules and the promising acting as new molecules to be scaled-up to industry.
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Affiliation(s)
- Andrés Felipe Vargas-Sinisterra
- Maestría en Ciencias Biomédicas, Grupo de Investigación BIOSALUD, Facultad de Ciencias para la salud, Universidad de Caldas, Calle 65 # 26-10, Manizales, Colombia.,Grupo de Investigación iCUBO, Facultad de Ingeniería, Departamento de Ingeniería Bioquímica, Universidad Icesi, Calle 18 # 122-135, Cali, Colombia
| | - Mauricio Ramírez-Castrillón
- Research Group in Mycology (GIM/CICBA), Facultad de Ciencias Básicas, Universidad Santiago de Cali, Calle 5 # 62-00, Cali, Colombia.
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Silk Fibroin-Based Hybrid Nanostructured Coatings for Titanium Implantable Surfaces Modification. COATINGS 2020. [DOI: 10.3390/coatings10060518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This study proposes the development of new architectures that combine nanostructured titanium surface and biodegradable polymers as a promising approach to achieve a better performance after bioactive agent incorporation. The silk fibroin protein that was extracted from silkworm Bombyx mori cocoons is important due to the remarkable characteristics, such as biocompatibility, good mechanical properties, adjustable degradation and drug stabilizing capabilities. The titanium substrate was firstly nanostructurated with TiO2 nanotubes and then coated with silk fibroin using electrospinning and electrochemical deposition. The deposited silk film ability to become a bioactive implant coating with antibacterial properties after the encapsulation of the active agents such as CeO2 was investigated. Important features of the new implant coating were analysed: surface properties, electrochemical stability in physiological simulated electrolytes, and antibacterial action against Escherichia coli. The obtained results indicate that silk fibroin bioactive layers are a potential candidate for regenerative medicine.
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Kreve S, Cândido Dos Reis A. Influence of the electrostatic condition of the titanium surface on bacterial adhesion: A systematic review. J Prosthet Dent 2020; 125:416-420. [PMID: 32247513 DOI: 10.1016/j.prosdent.2020.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/04/2020] [Accepted: 02/04/2020] [Indexed: 01/11/2023]
Abstract
STATEMENT OF PROBLEM Infection of a dental implant is undesirable and decreases the success rate of the dental prosthesis; however, systematic reviews on the issue are lacking. PURPOSE The purpose of this systematic review was to evaluate studies that dealt with inherent factors or those applied to the titanium surface or alloys to provide an antimicrobial action. MATERIAL AND METHODS SCOPUS, PubMed/Medline, Web of Science, EMBASE, and Science Direct databases were searched and manual searches made between June and July 2019 using the keywords "titanium," "surface," "implants," "photoelectron spectroscopy," and "fourier transform infrared spectroscopy." The criteria included in vitro studies evaluating the titanium surface and describing hydrophobicity, surface crystalline phase, nanotopography, surface charges, and their relationship with bacteria and/or osseointegration. RESULTS A comprehensive search identified 767 articles that were selected by the title and/or abstract as per the inclusion criteria. Of the 58 studies selected for full reading, 7 were used for this systematic review. Another 6 studies were added by further research, resulting in 13 articles, all in vitro studies. As the selected studies had a high heterogeneity that precluded any statistical analysis of the data, a descriptive analysis of these topics was performed: hydrophilicity, surface crystalline phase, nanotopography, and surface charges. CONCLUSIONS The articles analyzed in this systematic review suggest that hydrophilicity, crystalline phase, surface topography, and surface titanium charge, when altered, may provide an antimicrobial surface. However, the strategy used resulted in heterogeneous articles, making it impossible to demonstrate the unique effect of the electrostatic surface of titanium or titanium alloy used for implants and its effect on bacterial control.
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Affiliation(s)
- Simone Kreve
- Doctoral student, Department of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Andréa Cândido Dos Reis
- Associate Professor, Department of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, Brazil.
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Lopes HJS, Bonturi N, Kerkhoven EJ, Miranda EA, Lahtvee PJ. C/N ratio and carbon source-dependent lipid production profiling in Rhodotorula toruloides. Appl Microbiol Biotechnol 2020; 104:2639-2649. [PMID: 31980919 PMCID: PMC7044259 DOI: 10.1007/s00253-020-10386-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/23/2019] [Accepted: 01/16/2020] [Indexed: 11/06/2022]
Abstract
Microbial oils are lipids produced by oleaginous microorganisms, which can be used as a potential feedstock for oleochemical production. The oleaginous yeast Rhodotorula toruloides can co-produce microbial oils and high-value compounds from low-cost substrates, such as xylose and acetic acid (from hemicellulosic hydrolysates) and raw glycerol (a byproduct of biodiesel production). One step towards economic viability is identifying the best conditions for lipid production, primarily the most suitable carbon-to-nitrogen ratio (C/N). Here, we aimed to identify the best conditions and cultivation mode for lipid production by R. toruloides using various low-cost substrates and a range of C/N ratios (60, 80, 100, and 120). Turbidostat mode was used to achieve a steady state at the maximal specific growth rate and to avoid continuously changing environmental conditions (i.e., C/N ratio) that inherently occur in batch mode. Regardless of the carbon source, higher C/N ratios increased lipid yields (up to 60% on xylose at a C/N of 120) but decreased the specific growth rate. Growth on glycerol resulted in the highest specific growth and lipid production (0.085 g lipids/gDW*h) rates at C/Ns between 60 and 100. We went on to study lipid production using glycerol in both batch and fed-batch modes, which resulted in lower specific lipid production rates compared with turbisdostat, however, fed batch is superior in terms of biomass production and lipid titers. By combining the data we obtained in these experiments with a genome-scale metabolic model of R. toruloides, we identified targets for improvements in lipid production that could be carried out either by metabolic engineering or process optimization.
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Affiliation(s)
- Helberth Júnnior Santos Lopes
- Institute of Technology, University of Tartu, Tartu, Estonia
- Department of Materials and Bioprocess Engineering, School of Chemical Engineering, State University of Campinas, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, SP 13083-970 Brazil
| | | | - Eduard Johannes Kerkhoven
- Department of Biology and Biological Engineering, Chalmers University of Technology, Göteborg, Sweden
- Novo Nordisk Foundation Center for Biosustainability, Chalmers University of Technology, Göteborg, Sweden
| | - Everson Alves Miranda
- Department of Materials and Bioprocess Engineering, School of Chemical Engineering, State University of Campinas, Cidade Universitária Zeferino Vaz - Barão Geraldo, Campinas, SP 13083-970 Brazil
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Ferreira CH, Nunes SC, Santos VAQ, Pereira EC, Sikora MDS. Plasma electrolytic titanium oxide applied for pathogenic bacteria inactivation. ENVIRONMENTAL TECHNOLOGY 2020; 41:141-152. [PMID: 29924692 DOI: 10.1080/09593330.2018.1491641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 06/09/2018] [Indexed: 06/08/2023]
Abstract
Photocatalysis over TiO2 substrates is widely used in effluent treatment specially for organic compounds and for inactivation of pathogenic microorganisms. In the present work, TiO2 coatings were synthesized by plasma electrolytic oxidation (PEO) and its pathogenic bacteria inhibitory photoactivity was investigated. The photocatalytic activity of TiO2 coatings was investigated for the inactivation of Staphylococcus aureus and Salmonella bongori and the results were correlated with pore diameter and crystallite size. It was observed that both morphology and microstructure have an important role in the antibacterial photoactivity. The results show the larger the crystallite size and pore diameter the greater the photoactivity of the material. Porous materials that have a smaller pore diameter than the microorganism to be inactivated have low photoactivity. On the other hand, films that have pores with a diameter of the order or larger than the size of the microorganism to be inactivated present greater photocatalytic activity, once its pores allow the entrance and internal adsorption of the microorganisms, leading to the rupture of the cell membrane. Thus, in order to not sub-utilize the photocatalysts surface area, TiO2 coatings for using in microorganism inactivation must be synthesized with pore diameter bigger than the size of the microorganism.
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Affiliation(s)
- Carlise Hannel Ferreira
- Department of Chemistry, Federal Technological University of Paraná (UTFPR), Pato Branco, Brazil
| | - Sabrina Candido Nunes
- Department of Chemistry, Federal Technological University of Paraná (UTFPR), Pato Branco, Brazil
| | | | | | - Mariana de Souza Sikora
- Department of Chemistry, Federal Technological University of Paraná (UTFPR), Pato Branco, Brazil
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Li J, Liu C, Guo Y, Pi F, Yao W, Xie Y, Cheng Y, Qian H. Determination of the effects of torularhodin against alcoholic liver diseases by transcriptome analysis. Free Radic Biol Med 2019; 143:47-54. [PMID: 31374322 DOI: 10.1016/j.freeradbiomed.2019.07.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/25/2019] [Accepted: 07/28/2019] [Indexed: 12/20/2022]
Abstract
Alcoholic liver disease (ALD) is a major cause of liver injury worldwide. Oxidative damage is one of the main injuries caused by ALD. The aim of this study was to elucidate the preventive effects of torularhodin, extracted from Sporidiobolus pararoseus, on alcoholic liver injury in mice. The mechanisms involved were investigated using transcriptome analysis. Torularhodin supplementation decreased ethanol-induced aspartate transaminase (ALT), aspartate transaminase (AST) and low density lipoprotein (LDL) levels, and increased high density lipoprotein (HDL) levels in the serum of mice. In liver tissue, treatment with torularhodin increased ethanol-induced superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) levels and decreased tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) levels. Histological analysis showed that torularhodin could alleviate the negative effects of alcohol on the liver. Transcriptomic analysis showed that 806 genes were significantly differentially expressed (506 up-regulated and 300 down-regulated) after torularhodin treatment. These genes were involved in three main Gene Ontology categories (biological process, cellular component, and molecular function) and multiple pathways. Therefore, torularhodin was considered to have potential as a protective agent against ALD.
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Affiliation(s)
- Jiayi Li
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Chang Liu
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yahui Guo
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Fuwei Pi
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Weirong Yao
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yunfei Xie
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yuliang Cheng
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
| | - He Qian
- Department of School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
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Determination of the Molecular Mechanism of Torularhodin against Hepatic Oxidative Damage by Transcriptome Analysis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7417263. [PMID: 31396306 PMCID: PMC6664691 DOI: 10.1155/2019/7417263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/24/2019] [Accepted: 06/03/2019] [Indexed: 01/17/2023]
Abstract
Torularhodin, extracted from Sporidiobolus pararoseus, is a significant carotenoid that is similar to lycopene in structure. Some studies have indicated torularhodin as having antioxidative activities. However, it has not been thoroughly studied with respect to its antioxidative activity and molecular mechanisms in liver injury. Therefore, the aim of this study was to elucidate the antioxidative activity of torularhodin against hydrogen peroxide- (H2O2-) induced damage and the mechanism involved through transcriptome analysis and to explore its antioxidant potential. BRL cells were first subjected to H2O2 damage and then treated with torularhodin. The results showed that at 10−5 g/ml, torularhodin had significant protective effects against H2O2-induced oxidative damage. Morphological and immunofluorescence staining showed that torularhodin could maintain cell integrity and enhance the activity of antioxidant enzymes in the cells. According to transcriptome analysis, 2808 genes were significantly differentially expressed (1334 upregulated and 1474 downregulated) after torularhodin treatment. These genes were involved in three major Gene Ontology categories (biological process, cellular component, and molecular function). Moreover, torularhodin was involved in some cellular pathways, such as cancer inhibition, antioxidation, and aging delay. Our data highlighted the importance of multiple pathways in the antioxidative damage of liver treated with torularhodin and will contribute to get the molecular mechanisms of torularhodin inhibition of hepatic oxidative damage.
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Demetrescu I, Dumitriu C, Totea G, Nica CI, Dinischiotu A, Ionita D. Zwitterionic Cysteine Drug Coating Influence in Functionalization of Implantable Ti50Zr Alloy for Antibacterial, Biocompatibility and Stability Properties. Pharmaceutics 2018; 10:E220. [PMID: 30413075 PMCID: PMC6321039 DOI: 10.3390/pharmaceutics10040220] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/02/2018] [Accepted: 11/06/2018] [Indexed: 01/06/2023] Open
Abstract
The present paper aims atincreasing the bioperformance of implantable Ti50Zr alloy using zwitterionic cysteine drug coating. Aspects such as stability, biocompatibility, and antibacterial effects were investigated with the help of various methods such as infrared spectroscopy (FT-IR), scanning electronic microscopy (SEM), electrochemical methods, contact angle determinations and cell response. The experimental data of zwitterionic cysteine coating indicate the existence of a hydration layer due to hydrophilic groups evidenced in FT-IR which is responsible for the decrease of contact angle and antibacterial capabilities. The electrochemical stability was evaluatedbased on Tafel plots and electrochemical impedance spectroscopy (EIS). The cell response to cysteine was determined with gingival fibroblasts measuring lactate dehydrogenase (LDH) activity, concentrations of nitric oxide (NO) and intracellular level of reactive oxygen species (ROS). All experimental results supported the increase of stability and better cells response of implantable Ti50Zr alloy coated with zwitterionic cysteine drug. The antibacterial index was measured against Staphylococcus aureus and Escherichia coli. It was demonstrated that the coating enhanced the production of intracellular ROS in time, which subsequently caused a significant increase in antibacterial index.
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Affiliation(s)
- Ioana Demetrescu
- Faculty of Applied Chemistry and Materials Science POLITEHNICAof Bucharest, Romania Str. Polizu1-7, 011061 Bucharest, Romania.
- Faculty of Biomedical Engineering POLITEHNICA of Bucharest, Romania Str. Polizu1-7, 011061 Bucharest, Romania.
- Academy of Romanian Scientists, Spaiul Independentei 54, 050094 Bucharest, Romania.
| | - Cristina Dumitriu
- Faculty of Applied Chemistry and Materials Science POLITEHNICAof Bucharest, Romania Str. Polizu1-7, 011061 Bucharest, Romania.
| | - Georgeta Totea
- Buftea, M. Burghele Hospital, Studiolului 5, 070000 Buftea, Romania.
| | - Cristina I Nica
- Department of Biochemistry and Molecular Biology, University of Bucharest, 91-95 Spl. Independentei, 050095 Bucharest, Romania.
| | - Anca Dinischiotu
- Department of Biochemistry and Molecular Biology, University of Bucharest, 91-95 Spl. Independentei, 050095 Bucharest, Romania.
| | - Daniela Ionita
- Faculty of Applied Chemistry and Materials Science POLITEHNICAof Bucharest, Romania Str. Polizu1-7, 011061 Bucharest, Romania.
- Faculty of Biomedical Engineering POLITEHNICA of Bucharest, Romania Str. Polizu1-7, 011061 Bucharest, Romania.
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Kot AM, Błażejak S, Gientka I, Kieliszek M, Bryś J. Torulene and torularhodin: "new" fungal carotenoids for industry? Microb Cell Fact 2018; 17:49. [PMID: 29587755 PMCID: PMC5870927 DOI: 10.1186/s12934-018-0893-z] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 03/17/2018] [Indexed: 03/11/2023] Open
Abstract
Torulene and torularhodin represent the group of carotenoids and are synthesized by yeasts and fungi. The most important producers of these two compounds include yeasts of Rhodotorula and Sporobolomyces genera. The first reports confirming the presence of torulene and torularhodin in the cells of microorganisms date to the 1930s and 1940s; however, only in the past few years, the number of works describing the properties of these compounds increased. These compounds have strong anti-oxidative and anti-microbial properties, and thus may be successfully used as food, feedstock, and cosmetics additives. In addition, tests performed on rats and mice showed that both torulene and torularhodin have anti-cancerous properties. In order to commercialize the production of these two carotenoids, it is necessary to obtain highly efficient yeast strains, for example, via mutagenization and optimization of cultivation conditions. Further studies on the activity of torulene and torularhodin on the human body are also needed.
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Affiliation(s)
- Anna M Kot
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland.
| | - Stanisław Błażejak
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
| | - Iwona Gientka
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
| | - Marek Kieliszek
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
| | - Joanna Bryś
- Department of Chemistry, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
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Faraji M, Mohaghegh N, Abedini A. TiO2 nanotubes/Ti plates modified by silver–benzene with enhanced photocatalytic antibacterial properties. NEW J CHEM 2018. [DOI: 10.1039/c7nj03554c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A novel Ag/Benzene-Mod/TiO2 nanotubes/Ti plate was fabricated via photo-modification by benzene, followed by electrodeposition of Ag on the TiO2 nanotubes/Ti plate.
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Affiliation(s)
- Masoud Faraji
- Electrochemistry Research Laboratory
- Department of Physical Chemistry
- Chemistry Faculty
- Urmia University
- Urmia
| | - Neda Mohaghegh
- Department of petroleum
- Mining and Material Engineering
- Central Tehran Branch
- Islamic Azad University
- Tehran
| | - Amir Abedini
- Department of Physical Chemistry
- Faculty of Chemistry
- Isfahan University of Technology
- Isfahan 84156–83111
- Iran
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Pal S, Tarafdar A, Sinha A, Bhunia A, Harms K, Nayek HP. Mononuclear metal (II) complexes of a Bis(organoamido)phosphate ligand with antimicrobial activities against Escherichia coli. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Souvik Pal
- Department of Applied Chemistry; Indian Institute of Technology (Indian School of Mines); Dhanbad 826004 Jharkhand India
| | - Abhrajyoti Tarafdar
- Department of Environmental Science and Engineering; Indian Institute of Technology (Indian School of Mines); Dhanbad 826004 Jharkhand India
| | - Alok Sinha
- Department of Environmental Science and Engineering; Indian Institute of Technology (Indian School of Mines); Dhanbad 826004 Jharkhand India
| | - Asamanjoy Bhunia
- Department of Chemistry-Ångström Laboratory; Uppsala University; P.O. Box 523 75120 Uppsala Sweden
| | - Klaus Harms
- Fachbereich Chemie; Philipps Universität Marburg; Hans Meer-wein Strasse Marburg Germany
| | - Hari Pada Nayek
- Department of Applied Chemistry; Indian Institute of Technology (Indian School of Mines); Dhanbad 826004 Jharkhand India
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Fierascu RC, Georgiev MI, Fierascu I, Ungureanu C, Avramescu SM, Ortan A, Georgescu MI, Sutan AN, Zanfirescu A, Dinu-Pirvu CE, Velescu BS, Anuta V. Mitodepressive, antioxidant, antifungal and anti-inflammatory effects of wild-growing Romanian native Arctium lappa L. (Asteraceae) and Veronica persica Poiret (Plantaginaceae). Food Chem Toxicol 2017; 111:44-52. [PMID: 29126799 DOI: 10.1016/j.fct.2017.11.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/05/2017] [Accepted: 11/06/2017] [Indexed: 11/20/2022]
Abstract
The present study aims to evaluate the potential uses of hydroalcoholic extracts obtained from Romanian native wild-growing plants. The hydroalcoholic extracts were obtained from the burdock roots and respectively the aerial parts of birdeye speedwell. The extracts were characterised by HPLC (quantifying 13 compounds in the V. persica extract, 6 compounds in the A. lappa extract and confirming the presence of arctiin and arctigenin in the burdock extract). The antioxidant potential of the crude extracts was evaluated using two methods: the DPPH assay (79.91% for speedwell extract, 76.23% for burdock extract) and the phosphomolybdate method (296.5 mg/g ascorbic acid equivalents for burdock, 324.4 mg/g for speedwell). The crude extracts were found to be active against both fungal lines used (Aspergillus niger and Penicillium hirsutum), inhibition zones - 17.1 mm and 13.1 mm against P. hirsutum, respectively ca. 22 mm for both extracts against A. niger. The cytogenetic effects (assessed using the Allium cepa assay) revealed a series of chromosomal aberrations and nuclear aberrations induced in the meristematic root cells. The anti-inflammatory effect, estimated in two inflammation experimental models, showed a significant effect, especially for the speedwell extract. The results recommend the evaluated extracts as promising sources of biologically-active compounds.
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Affiliation(s)
- Radu Claudiu Fierascu
- University of Agronomic Science and Veterinary Medicine, Bucharest, Romania; The National Institute for Research & Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania
| | - Milen I Georgiev
- University of Agronomic Science and Veterinary Medicine, Bucharest, Romania; Laboratory of Applied Biotechnologies, Institute of Microbiology, Bulgarian Academy of Sciences, Plovdiv, Bulgaria University, Romania
| | - Irina Fierascu
- University of Agronomic Science and Veterinary Medicine, Bucharest, Romania; The National Institute for Research & Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania.
| | - Camelia Ungureanu
- Politehnica of Bucharest, Faculty of Applied Chemistry and Material Science, Bucharest, Romania
| | - Sorin Marius Avramescu
- University of Agronomic Science and Veterinary Medicine, Bucharest, Romania; Research Center for Environmental Protection and Waste Management, University of Bucharest, Bucharest, Romania
| | - Alina Ortan
- University of Agronomic Science and Veterinary Medicine, Bucharest, Romania
| | | | - Anca Nicoleta Sutan
- University of Pitesti, Department of Natural Sciences, Pitesti, Arges, Romania
| | - Anca Zanfirescu
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Cristina Elena Dinu-Pirvu
- University of Agronomic Science and Veterinary Medicine, Bucharest, Romania; Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | | | - Valentina Anuta
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
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Dominik M, Leśniewski A, Janczuk M, Niedziółka-Jönsson J, Hołdyński M, Wachnicki Ł, Godlewski M, Bock W, Śmietana M. Titanium oxide thin films obtained with physical and chemical vapour deposition methods for optical biosensing purposes. Biosens Bioelectron 2017; 93:102-109. [DOI: 10.1016/j.bios.2016.09.079] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 09/10/2016] [Accepted: 09/23/2016] [Indexed: 01/12/2023]
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Activity of vancomycin release from bioinspired coatings of hydroxyapatite or TiO 2 nanotubes. Int J Pharm 2016; 517:296-302. [PMID: 27913240 DOI: 10.1016/j.ijpharm.2016.11.062] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/27/2016] [Accepted: 11/29/2016] [Indexed: 11/22/2022]
Abstract
Herein we investigate the efficiency of various biomimetic coatings for localized drug delivery, using vancomycin as key therapeutic drug, which is a widely used antibiotic for the treatment of strong infections caused by positive Gram bacteria. We evaluate classical hydroxyapatite and biomimetic hydroxyapatite-collagen coatings obtained by electrochemical deposition as well as TiO2 nanotubes arrays obtained by electrochemical anodization. Surface morphology, compositional and structural data confirm the incorporation of vancomycin into the layers and drug release profiles for vancomycin evaluate their release ability. Namely, hydroxyapatite coatings lead to a ≈92% vancomycin release after 30h and hydroxyapatite-collagen to 85%, while the TiO2 nanotubes layers lead to 78% release. The antibacterial effect of such drug loaded coatings is evaluated against S. aureus (Gram-positive bacteria). Our study shows that the vancomycin incorporated hydroxyapatite coatings lead to a faster release, while the nanotubular coatings may lead to longer time release and additionally both types of coatings ensure a good antibacterial inhibition.
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Kot AM, Błażejak S, Kurcz A, Gientka I, Kieliszek M. Rhodotorula glutinis-potential source of lipids, carotenoids, and enzymes for use in industries. Appl Microbiol Biotechnol 2016; 100:6103-6117. [PMID: 27209039 PMCID: PMC4916194 DOI: 10.1007/s00253-016-7611-8] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/29/2016] [Accepted: 05/02/2016] [Indexed: 11/23/2022]
Abstract
Rhodotorula glutinis is capable of synthesizing numerous valuable compounds with a wide industrial usage. Biomass of this yeast constitutes sources of microbiological oils, and the whole pool of fatty acids is dominated by oleic, linoleic, and palmitic acid. Due to its composition, the lipids may be useful as a source for the production of the so-called third-generation biodiesel. These yeasts are also capable of synthesizing carotenoids such as β-carotene, torulene, and torularhodin. Due to their health-promoting characteristics, carotenoids are commonly used in the cosmetic, pharmaceutical, and food industries. They are also used as additives in fodders for livestock, fish, and crustaceans. A significant characteristic of R. glutinis is its capability to produce numerous enzymes, in particular, phenylalanine ammonia lyase (PAL). This enzyme is used in the food industry in the production of l-phenylalanine that constitutes the substrate for the synthesis of aspartame—a sweetener commonly used in the food industry.
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Affiliation(s)
- Anna M Kot
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland.
| | - Stanisław Błażejak
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
| | - Agnieszka Kurcz
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
| | - Iwona Gientka
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
| | - Marek Kieliszek
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-776, Warsaw, Poland
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Alvarez-Lorenzo C, Garcia-Gonzalez CA, Bucio E, Concheiro A. Stimuli-responsive polymers for antimicrobial therapy: drug targeting, contact-killing surfaces and competitive release. Expert Opin Drug Deliv 2016; 13:1109-19. [PMID: 27074830 DOI: 10.1080/17425247.2016.1178719] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
INTRODUCTION Polymers can be designed to modify their features as a function of the level and nature of the surrounding microorganisms. Such responsive polymers can endow drug delivery systems and drug-medical device combination products with improved performance against intracellular infections and biofilms. AREAS COVERED Knowledge on microorganism growth environment outside and inside cells and formation of biofilm communities on biological and synthetic surfaces, together with advances in materials science and drug delivery are prompting strategies with improved efficacy and safety compared to traditional systemic administration of antimicrobial agents. This review deals with antimicrobial strategies that rely on: (i) polymers that disintegrate or undergo phase-transitions in response to changes in enzymes, pH and pO2 associated to microorganism growth; (ii) stimuli-responsive polymers that expose contact-killing groups when microorganisms try to adhere; and (iii) bioinspired polymers that recognize microorganisms for triggered (competitive/affinity-driven) drug release. EXPERT OPINION Prophylaxis and treatment of infections may benefit from polymers that are responsive to the unique changes that microbial growth causes in the surrounding environment or that even recognize the microorganism itself or its quorum sensing signals. These polymers may offer novel tools for the design of macrophage-, bacteria- and/or biofilm-targeted nanocarriers as well as of medical devices with switchable antibiofouling properties.
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Affiliation(s)
- Carmen Alvarez-Lorenzo
- a Departamento de Farmacia y Tecnología Farmacéutica , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
| | - Carlos A Garcia-Gonzalez
- a Departamento de Farmacia y Tecnología Farmacéutica , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
| | - Emilio Bucio
- b Departamento de Química de Radiaciones y Radioquímica , Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria , México DF , Mexico
| | - Angel Concheiro
- a Departamento de Farmacia y Tecnología Farmacéutica , Universidade de Santiago de Compostela , Santiago de Compostela , Spain
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Nie B, Ao H, Chen C, Xie K, Zhou J, Long T, Tang T, Yue B. Covalent immobilization of KR-12 peptide onto a titanium surface for decreasing infection and promoting osteogenic differentiation. RSC Adv 2016. [DOI: 10.1039/c6ra06778f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Covalent immobilization of KR-12 peptide onto titanium surface for anti-bacteria and promoting osteogenic differentiation.
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Affiliation(s)
- Bin'en Nie
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
| | - Haiyong Ao
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
| | - Chi Chen
- Institute and Department of Endocrinology and Metabolism
- Shanghai Ninth People's Hospital
- Shanghai JiaoTong University School of Medicine
- Shanghai
- China
| | - Kai Xie
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
| | - Jianliang Zhou
- Department of Cardiothoracic Surgery
- The Second Affiliated Hospital of Nanchang University
- P.R. China
| | - Teng Long
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
| | - Tingting Tang
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
| | - Bing Yue
- Shanghai Key Laboratory of Orthopedic Implants
- Department of Orthopedic Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
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