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Fentahun AB, Jing G, Xiangnan Y, Shaojie T, Huihui Z, Jhatial AK. Rhamnus prinoides leaf extract loaded polycaprolactone-cellulose acetate nanofibrous scaffold as potential wound dressing: An in vitro study. Int J Biol Macromol 2024:134934. [PMID: 39179067 DOI: 10.1016/j.ijbiomac.2024.134934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 08/16/2024] [Accepted: 08/19/2024] [Indexed: 08/26/2024]
Abstract
Rhamnus prinoides leaf contains carbohydrates, saccharides, phenolic acids, and diterpenes with antibacterial, wound-healing, and anti-inflammatory properties. In this study, Rhamnus prinoides leaf extract was successfully incorporated into polycaprolactone-cellulose acetate (PCL-CA) nanofibers through electrospinning technique for the first time. The mats' morphology, diameter, chemical, and crystalline structure were characterized. The study investigated the mats' antibacterial activity, wound healing, cytotoxicity, drug release behaviour, hydrophilicity, and water absorbency properties. The results revealed that the mats exhibited continuous, smooth, without-beads, and interconnected structures, with average fiber diameters ranging from 385 ± 21 nm to 332 ± 74 nm. The antibacterial effeciency was remarkable against S. aureus and E. coli, achieving bacterial reduction percentages exceeding 99 % at concentrations of 3 % and above against S. aureus and 5 % and above against E. coli. Cytotoxic tests showed low-cytotoxicity up to an extract concentration of 7 %. The extract release increases with an increase in concentration. In vitro wound healing assay, the mats enhanced cell migration to the wound area. Additionally, the incorporation of Rhamnus prinoides significantly improved the hydrophilicity and water absorbency of the nanofibers. Overall, the study highlights the mats' broad antimicrobial and wound healing properties with less cytotoxicity, hydrophilicity, and water absorbency, making them promising for use as wound dressings.
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Affiliation(s)
- Adamu Biruk Fentahun
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China; Textile engineering department, Bahir Dar University, Bahir Dar 6000, Ethiopia
| | - Gao Jing
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
| | - Yuan Xiangnan
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Tan Shaojie
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Zhao Huihui
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Abdul Khalique Jhatial
- Key Laboratory of Textile Science & Technology of Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China; Department of Textile Engineering, Mehran University of Engineering and Technology, Jamshoro, Sindh, Pakistan
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2
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Kamel NA, Wissa DA, Abd-El-Messieh SL. Novel nano composites from Citrus limon and Citrullus colocynthis agricultural wastes for biomedical applications. Sci Rep 2024; 14:17343. [PMID: 39069554 PMCID: PMC11284205 DOI: 10.1038/s41598-024-67423-w] [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: 03/23/2024] [Accepted: 07/11/2024] [Indexed: 07/30/2024] Open
Abstract
In recent years, academic and industrial research has focused on using agro-waste for energy and new material production to promote sustainable development and lessen environmental issues. In this study, new nanocomposites based on polyvinyl alcohol (PVA)-Starch using two affordable agricultural wastes, Citrus limon peels (LP) and Citrullus colocynthis (Cc) shells and seeds powders with different concentrations (2, 5, 10, and 15 wt%) as bio-fillers were prepared. The nanocomposites were characterized by Dielectric Spectroscopy, Fourier-Transform Infrared (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and water swelling ratio. The antimicrobial properties of the nanocomposites against Escherichia coli, Staphylococcus aureus, and Candida albicans were examined to investigate the possibility of using such composites in biomedical applications. Additionally, the biocompatibility of the composites on human normal fibroblast cell lines (HFB4) was tested using MTT (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide) assay. The results demonstrate that the filler type and concentration strongly affect the film's properties. The permittivity ε', dielectric loss ε″ and conductivity σdc increased by increasing filler content but still in the insulators range that recommend such composites to be used in the insulation purposes. Both bio fillers control the water uptake, and the samples filled with LP were more water resistant. The polyvinyl alcohol/starch incorporated with 5 wt% LP and Cc have antimicrobial effects against all the tested microorganisms. Increasing the filler content has a negative impact on cell viability.
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Affiliation(s)
- Nagwa A Kamel
- Microwave Physics and Dielectrics Department, Physics Research Institute, National Research Centre, Giza, Egypt.
| | - D A Wissa
- Solid State Physics Department, Physics Research Institute, National Research Centre, Giza, Egypt
| | - Salwa L Abd-El-Messieh
- Microwave Physics and Dielectrics Department, Physics Research Institute, National Research Centre, Giza, Egypt
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3
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Yang JW, Lee J, Song KI, Park D, Cha HJ. Acrylated adhesive proteinic microneedle patch for local drug delivery and stable device implantation. J Control Release 2024; 371:193-203. [PMID: 38782066 DOI: 10.1016/j.jconrel.2024.05.038] [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: 03/20/2024] [Revised: 04/30/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
Microneedle patches have been developed as favorable platforms for delivery systems, such as the locoregional application of therapeutic drugs, and implantation systems, such as electronic devices on visceral tissue surfaces. However, the challenge lies in finding materials that can achieve both biocompatibility and stable fixation on the target tissue. To address this issue, utilizing a biocompatible adhesive biomaterial allows the flat part of the patch to adhere as well, enabling double-sided adhesion for greater versatility. In this work, we propose an adhesive microneedle patch based on mussel adhesive protein (MAP) with enhanced mechanical strength via ultraviolet-induced polyacrylate crosslinking and Coomassie brilliant blue molecules. The strong wet tissue adhesive and biocompatible nature of engineered acrylated-MAP resulted in the development of a versatile wet adhesive microneedle patch system for in vivo usage. In a mouse tumor model, this microneedle patch effectively delivered anticancer drugs while simultaneously sealing the skin wound. Additionally, in an application of rat subcutaneous implantation, an electronic circuit was stably anchored using a double-sided wet adhesive microneedle patch, and its signal location underneath the skin did not change over time. Thus, the proposed acrylated-MAP-based wet adhesive microneedle patch system holds great promise for biomedical applications, paving the way for advancements in drug delivery therapeutics, tissue engineering, and implantable electronic medical devices.
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Affiliation(s)
- Jang Woo Yang
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jaeyun Lee
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Kang Il Song
- Division of Smart Healthcare, Pukyong National University, Busan 48513, Republic of Korea
| | - Dongsik Park
- Drug Manufacturing Center, Daegu-Gyeongbuk Medical Innovation Foundation (K-MEDI Hub), Daegu 41061, Republic of Korea
| | - Hyung Joon Cha
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea; Medical Science and Engineering, School of Convergence Science and Technology, Pohang University of Science and Technology, Pohang 37673, Republic of Korea.
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4
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Bozuyuk U, Wrede P, Yildiz E, Sitti M. Roadmap for Clinical Translation of Mobile Microrobotics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311462. [PMID: 38380776 DOI: 10.1002/adma.202311462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/24/2024] [Indexed: 02/22/2024]
Abstract
Medical microrobotics is an emerging field to revolutionize clinical applications in diagnostics and therapeutics of various diseases. On the other hand, the mobile microrobotics field has important obstacles to pass before clinical translation. This article focuses on these challenges and provides a roadmap of medical microrobots to enable their clinical use. From the concept of a "magic bullet" to the physicochemical interactions of microrobots in complex biological environments in medical applications, there are several translational steps to consider. Clinical translation of mobile microrobots is only possible with a close collaboration between clinical experts and microrobotics researchers to address the technical challenges in microfabrication, safety, and imaging. The clinical application potential can be materialized by designing microrobots that can solve the current main challenges, such as actuation limitations, material stability, and imaging constraints. The strengths and weaknesses of the current progress in the microrobotics field are discussed and a roadmap for their clinical applications in the near future is outlined.
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Affiliation(s)
- Ugur Bozuyuk
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany
| | - Paul Wrede
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany
- Institute for Biomedical Engineering, ETH Zurich, Zurich, 8093, Switzerland
| | - Erdost Yildiz
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany
| | - Metin Sitti
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569, Stuttgart, Germany
- School of Medicine and College of Engineering, Koc University, Istanbul, 34450, Turkey
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Li Y, Jiao H, Zhang H, Wang X, Fu Y, Wang Q, Liu H, Yong YC, Guo J, Liu J. Biosafety consideration of nanocellulose in biomedical applications: A review. Int J Biol Macromol 2024; 265:130900. [PMID: 38499126 DOI: 10.1016/j.ijbiomac.2024.130900] [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: 01/10/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 03/20/2024]
Abstract
Nanocellulose-based biomaterials have gained significant attention in various fields, especially in medical and pharmaceutical areas, due to their unique properties, including non-toxicity, high specific surface area, biodegradability, biocompatibility, and abundant feasible and sophisticated strategies for functional modification. The biosafety of nanocellulose itself is a prerequisite to ensure the safe and effective application of biomaterials as they interact with living cells, tissues, and organs at the nanoscale. Potential residual endogenous impurities and exogenous contaminants could lead to the failure of the intended functionalities or even serious health complications if they are not adequately removed and assessed before use. This review summarizes the sources of impurities in nanocellulose that may pose potential hazards to their biosafety, including endogenous impurities that co-exist in the cellulosic raw materials themselves and exogenous contaminants caused by external exposure. Strategies to reduce or completely remove these impurities are outlined and classified as chemical, physical, biological, and combined methods. Additionally, key points that require careful consideration in the interpretation of the biosafety evaluation outcomes were discussed to ensure the safety and effectiveness of the nanocellulose-based biomaterials in medical applications.
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Affiliation(s)
- Yan Li
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Haixin Jiao
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Hongxing Zhang
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Xiangyu Wang
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Yinyi Fu
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Qianqian Wang
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Huan Liu
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China
| | - Yang-Chun Yong
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Jiaqi Guo
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Jun Liu
- Biofuels Institute, School of Environment and Safety Engineering, c/o School of Emergency Management, Jiangsu University, Zhenjiang 212013, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, China.
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6
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Khalef L, Lydia R, Filicia K, Moussa B. Cell viability and cytotoxicity assays: Biochemical elements and cellular compartments. Cell Biochem Funct 2024; 42:e4007. [PMID: 38593323 DOI: 10.1002/cbf.4007] [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: 01/10/2024] [Revised: 03/01/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Cell viability and cytotoxicity assays play a crucial role in drug screening and evaluating the cytotoxic effects of various chemicals. The quantification of cell viability and proliferation serves as the cornerstone for numerous in vitro assays that assess cellular responses to external factors. In the last decade, several studies have developed guidelines for defining and interpreting cell viability and cytotoxicity based on morphological, biochemical, and functional perspectives. As this domain continues to experience ongoing growth, revealing new mechanisms orchestrating diverse cell cytotoxicity pathways, we suggest a revised classification for multiple assays employed in evaluating cell viability and cell death. This classification is rooted in the cellular compartment and/or biochemical element involved, with a specific focus on mechanistic and essential aspects of the process. The assays are founded on diverse cell functions, encompassing metabolic activity, enzyme activity, cell membrane permeability and integrity, adenosine 5'-triphosphate content, cell adherence, reduction equivalents, dye inclusion or exclusion, constitutive protease activity, colony formation, DNA fragmentation and nuclear splitting. These assays present straightforward, reliable, sensitive, reproducible, cost-effective, and high-throughput approaches for appraising the effects of newly formulated chemotherapeutic biomolecules on the cell survival during the drug development process.
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Affiliation(s)
- Lefsih Khalef
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
| | - Radja Lydia
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
| | - Khettar Filicia
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
| | - Berkoud Moussa
- Département de Biochimie et Microbiologie, Laboratoire d'Ecologie, Biotechnologie et Santé, Université Mouloud Mammeri de Tizi ouzou, Tizi Ouzou, Algeria
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7
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Vasina DV, Antonova NP, Shidlovskaya EV, Kuznetsova NA, Grishin AV, Akoulina EA, Trusova EA, Lendel AM, Mazunina EP, Kozlova SR, Dudun AA, Bonartsev AP, Lunin VG, Gushchin VA. Alginate Gel Encapsulated with Enzybiotics Cocktail Is Effective against Multispecies Biofilms. Gels 2024; 10:60. [PMID: 38247783 PMCID: PMC10815372 DOI: 10.3390/gels10010060] [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: 12/12/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024] Open
Abstract
The development of new and effective antibacterials for pharmaceutical or cosmetic skin care that have a low potential for the emergence and expansion of bacterial resistance is of high demand in scientific and applied research. Great hopes are placed on alternative agents such as bactericidal peptidoglycan hydrolases, depolymerases, etc. Enzybiotic-based preparations are being studied for the treatment of various infections and, among others, can be used as topical formulations and dressings with protein-polysaccharide complexes. Here, we investigate the antibiofilm properties of a novel enzybiotic cocktail of phage endolysin LysSi3 and bacteriocin lysostaphin, formulated in the alginate gel matrix and its ability to control the opportunistic skin-colonizing bacteria Staphylococcus aureus, Pseudomonas aeruginosa, and Klebsiella pneumoniae, as well as mixed-species biofilms. Our results propose that the application of SiL-gel affects different components of biofilm extracellular polymeric substances, disrupts the matrix, and eliminates the bacteria embedded in it. This composition is highly effective against biofilms composed of Gram-negative and Gram-positive species and does not possess significant cytotoxic effects. Our data form the basis for the development of antibacterial skin care products with a gentle but effective mode of action.
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Affiliation(s)
- Daria V. Vasina
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Nataliia P. Antonova
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Elena V. Shidlovskaya
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Nadezhda A. Kuznetsova
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Alexander V. Grishin
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
- All-Russia Research Institute of Agricultural Biotechnology, 127550 Moscow, Russia
| | - Elizaveta A. Akoulina
- Faculty of Biology, MSU-BIT Shenzhen University, Shenzhen 518115, China;
- Faculty of Biology, M.V. Lomonosov Moscow State University, 119234 Moscow, Russia;
| | | | - Anastasiya M. Lendel
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Elena P. Mazunina
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Sofia R. Kozlova
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
| | - Andrei A. Dudun
- Research Center of Biotechnology of the Russian Academy of Sciences Leninsky Ave, 33, Bld. 2, 119071 Moscow, Russia;
| | - Anton P. Bonartsev
- Faculty of Biology, M.V. Lomonosov Moscow State University, 119234 Moscow, Russia;
| | - Vladimir G. Lunin
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
- All-Russia Research Institute of Agricultural Biotechnology, 127550 Moscow, Russia
| | - Vladimir A. Gushchin
- N.F. Gamaleya National Research Centre for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, 123098 Moscow, Russia; (N.P.A.); (E.V.S.); (N.A.K.); (A.V.G.); (E.P.M.); (S.R.K.); (V.G.L.); (V.A.G.)
- Faculty of Biology, M.V. Lomonosov Moscow State University, 119234 Moscow, Russia;
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Vardar E, Nam HY, Vythilingam G, Tan HL, Mohamad Wali HA, Engelhardt EM, Kamarul T, Zambelli PY, Samara E. A New Bioactive Fibrin Formulation Provided Superior Cartilage Regeneration in a Caprine Model. Int J Mol Sci 2023; 24:16945. [PMID: 38069268 PMCID: PMC10707130 DOI: 10.3390/ijms242316945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
The effective and long-term treatment of cartilage defects is an unmet need among patients worldwide. In the past, several synthetic and natural biomaterials have been designed to support functional articular cartilage formation. However, they have mostly failed to enhance the terminal stage of chondrogenic differentiation, leading to scar tissue formation after the operation. Growth factors substantially regulate cartilage regeneration by acting on receptors to trigger intracellular signaling and cell recruitment for tissue regeneration. In this study, we investigated the effect of recombinant insulin-like growth factor 1 (rIGF-1), loaded in fibrin microbeads (FibIGF1), on cartilage regeneration. rIGF-1-loaded fibrin microbeads were injected into full-thickness cartilage defects in the knees of goats. The stability, integration, and quality of tissue repair were evaluated at 1 and 6 months by gross morphology, histology, and collagen type II staining. The in vivo results showed that compared to plain fibrin samples, particularly at 6 months, FibIGF1 improved the functional cartilage formation, confirmed through gross morphology, histology, and collagen type II immunostaining. FibIGF1 could be a promising candidate for cartilage repair in the clinic.
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Affiliation(s)
- Elif Vardar
- Pediatric Orthopedic Department, Children’s Hospital, Chémin de Montétan 16, 1004 Lausanne, Switzerland; (E.V.); (E.-M.E.); (P.-Y.Z.)
| | - Hui Yin Nam
- Tissue Engineering Group, Department of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (H.Y.N.); (H.L.T.)
- Nanotechnology and Catalysis Research Centre (NANOCAT), Universiti Malaya, Kuala Lumpur 50603, Malaysia
| | - Ganesh Vythilingam
- Pediatric Surgery Unit, Department of Surgery, Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia;
| | - Han Ling Tan
- Tissue Engineering Group, Department of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (H.Y.N.); (H.L.T.)
| | | | - Eva-Maria Engelhardt
- Pediatric Orthopedic Department, Children’s Hospital, Chémin de Montétan 16, 1004 Lausanne, Switzerland; (E.V.); (E.-M.E.); (P.-Y.Z.)
| | - Tunku Kamarul
- Tissue Engineering Group, Department of Orthopaedic Surgery (NOCERAL), Faculty of Medicine, Universiti Malaya, Kuala Lumpur 50603, Malaysia; (H.Y.N.); (H.L.T.)
| | - Pierre-Yves Zambelli
- Pediatric Orthopedic Department, Children’s Hospital, Chémin de Montétan 16, 1004 Lausanne, Switzerland; (E.V.); (E.-M.E.); (P.-Y.Z.)
| | - Eleftheria Samara
- Pediatric Orthopedic Department, Children’s Hospital, Chémin de Montétan 16, 1004 Lausanne, Switzerland; (E.V.); (E.-M.E.); (P.-Y.Z.)
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9
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Antoniac I, Manescu (Paltanea) V, Antoniac A, Paltanea G. Magnesium-based alloys with adapted interfaces for bone implants and tissue engineering. Regen Biomater 2023; 10:rbad095. [PMID: 38020233 PMCID: PMC10664085 DOI: 10.1093/rb/rbad095] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 10/03/2023] [Accepted: 10/22/2023] [Indexed: 12/01/2023] Open
Abstract
Magnesium and its alloys are one of the most used materials for bone implants and tissue engineering. They are characterized by numerous advantages such as biodegradability, high biocompatibility and mechanical properties with values close to the human bone. Unfortunately, the implant surface must be adequately tuned, or Mg-based alloys must be alloyed with other chemical elements due to their increased corrosion effect in physiological media. This article reviews the clinical challenges related to bone repair and regeneration, classifying bone defects and presenting some of the most used and modern therapies for bone injuries, such as Ilizarov or Masquelet techniques or stem cell treatments. The implant interface challenges are related to new bone formation and fracture healing, implant degradation and hydrogen release. A detailed analysis of mechanical properties during implant degradation is extensively described based on different literature studies that included in vitro and in vivo tests correlated with material properties' characterization. Mg-based trauma implants such as plates and screws, intramedullary nails, Herbert screws, spine cages, rings for joint treatment and regenerative scaffolds are presented, taking into consideration their manufacturing technology, the implant geometrical dimensions and shape, the type of in vivo or in vitro studies and fracture localization. Modern technologies that modify or adapt the Mg-based implant interfaces are described by presenting the main surface microstructural modifications, physical deposition and chemical conversion coatings. The last part of the article provides some recommendations from a translational perspective, identifies the challenges associated with Mg-based implants and presents some future opportunities. This review outlines the available literature on trauma and regenerative bone implants and describes the main techniques used to control the alloy corrosion rate and the cellular environment of the implant.
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Affiliation(s)
- Iulian Antoniac
- Faculty of Material Science and Engineering, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania
- Academy of Romanian Scientists, 050094 Bucharest, Romania
| | - Veronica Manescu (Paltanea)
- Faculty of Material Science and Engineering, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania
- Faculty of Electrical Engineering, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania
| | - Aurora Antoniac
- Faculty of Material Science and Engineering, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania
| | - Gheorghe Paltanea
- Faculty of Electrical Engineering, National University of Science and Technology POLITEHNICA Bucharest, 060042 Bucharest, Romania
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10
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Pavi CP, Prá ID, Cadamuro RD, Kanzaki I, Lacerda JWF, Sandjo LP, Bezerra RM, Segovia JFO, Fongaro G, Silva IT. Amazonian medicinal plants efficiently inactivate Herpes and Chikungunya viruses. Biomed Pharmacother 2023; 167:115476. [PMID: 37713986 DOI: 10.1016/j.biopha.2023.115476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/17/2023] Open
Abstract
The Amazonian species investigated in this research are commonly utilized for their anti-inflammatory properties and their potential against various diseases. However, there is a lack of scientifically supported information validating their biological activities. In this study, a total of seventeen ethanolic or aqueous extracts derived from eight Amazonian medicinal plants were evaluated for their activity against Herpes Simplex type 1 (HSV-1) and Chikungunya viruses (CHIKV). Cytotoxicity was assessed using the sulforhodamine B method, and the antiviral potential was determined through a plaque number reduction assay. Virucidal tests were conducted according to EN 14476 standards for the most potent extracts. Additionally, the chemical composition of the most active extracts was investigated. Notably, the LMLE10, LMBA11, MEBE13, and VABE17 extracts exhibited significant activity against CHIKV and the non-acyclovir-resistant strain of HSV-1 (KOS) (SI > 9). The MEBE13 extract demonstrated unique inhibition against the acyclovir-resistant strain of HSV-1 (29-R). Virucidal assays indicated a higher level of virucidal activity compared to their antiviral activity. Moreover, the virucidal capacity of the most active extracts was sustained when tested in the presence of protein solutions against HSV-1 (KOS). In the application of EN 14476 against HSV-1 (KOS), the LMBA11 extract achieved a 99.9% inhibition rate, while the VABE17 extract reached a 90% inhibition rate. This study contributes to the understanding of medicinal species native to the Brazilian Amazon, revealing their potential in combating viral infections that have plagued humanity for centuries (HSV-1) or currently lack specific therapeutic interventions (CHIKV).
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Affiliation(s)
- Catielen Paula Pavi
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Isabella Dai Prá
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Rafael Dorighello Cadamuro
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Isamu Kanzaki
- Laboratory of Bioprospection, University of Brasilia, Campus Darcy Ribeiro, Brasília, DF 70910-900, Brazil
| | - Jhuly Wellen Ferreira Lacerda
- Laboratory of Chemistry of Natural Products, Department of Chemistry, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Louis Pergaud Sandjo
- Laboratory of Chemistry of Natural Products, Department of Chemistry, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Roberto Messias Bezerra
- Laboratory of Bioprospection and Atomic Absorption, Federal University of Amapa, Macapá, AP 68903-419, Brazil
| | | | - Gislaine Fongaro
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Izabella Thaís Silva
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil; Laboratory of Pharmacognosy, Department of Pharmaceutical Sciences, Federal University of Santa Catarina, Florianópolis, SC 88040-900, Brazil.
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11
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Rengarajan V, Clyde A, Pontsler J, Valiente J, Peel A, Huang Y. Assessing Leachable Cytotoxicity of 3D-Printed Polymers and Facile Detoxification Methods. 3D PRINTING AND ADDITIVE MANUFACTURING 2023; 10:1110-1121. [PMID: 37873063 PMCID: PMC10593418 DOI: 10.1089/3dp.2021.0216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Additive manufacturing of polymers is gaining momentum in health care industries by providing rapid 3D printing of customizable designs. Yet, little is explored about the cytotoxicity of leachable toxins that the 3D printing process introduced into the final product. We studied three printable materials, which have various mechanical properties and are widely used in stereolithography 3D printing. We evaluated the cytotoxicity of these materials through exposing two fibroblast cell lines (human and mouse derived) to the 3D-printed parts, using overlay indirect contact assays. All the 3D-printed parts were measured toxic to the cells in a leachable manner, with flexible materials more toxic than rigid materials. Furthermore, we attempted to reduce the toxicity of the 3D-printed material by employing three treatment methods (further curing, passivation coating, and Soxhlet solvent extraction). The Soxhlet solvent extraction method was the most effective in removing the leachable toxins, resulting in the eradication of the material's toxicity. Passivation coating and further curing showed moderate and little detoxification, respectively. Additionally, mechanical testing of the materials treated with extraction methods revealed no significant impacts on its mechanical performances. As leachable toxins are broadly present in 3D-printed polymers, our cytotoxicity evaluation and reduction methods could aid in extending the selections of biocompatible materials and pave the way for the translational use of 3D printing.
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Affiliation(s)
| | - Angela Clyde
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
- Institute of Antiviral Research, Utah State University, Logan, Utah, USA
| | - Jefferson Pontsler
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
| | - Jonathan Valiente
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
| | - Adreann Peel
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
| | - Yu Huang
- Department of Biological Engineering, Utah State University, Logan, Utah, USA
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12
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Yang K, Shen L, Zhang L, Sun W, Zou Y, Ren Y, Zeng R. Antibacterial Activity and Biocompatibility of Ag-Montmorillonite/Chitosan Colloidal Dressing in a Skin Infection Rat Model: An In Vitro and In Vivo Study. J Funct Biomater 2023; 14:470. [PMID: 37754884 PMCID: PMC10532439 DOI: 10.3390/jfb14090470] [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: 07/15/2023] [Revised: 09/03/2023] [Accepted: 09/09/2023] [Indexed: 09/28/2023] Open
Abstract
(1) Background: Traditional dressings can only superficially cover the wound, they have widespread issues with inadequate bacterial isolation and liquid absorption, and it is simple to inflict secondary wound injury when changing dressings. Therefore, it is crucial for wound healing to develop a new kind of antimicrobial colloidal dressing with good antibacterial, hygroscopic, and biocompatible qualities. (2) Methods: Ag-montmorillonite/chitosan (Ag-MMT/CS) colloid, a new type of antibacterial material, was prepared from two eco-friendly materials-namely, montmorillonite and chitosan-as auxiliary materials, wherein these materials were mixed with the natural metal Ag, which is an antibacterial agent. The optimum preparation technology was explored, and Ag-MMT/CS was characterized. Next, Staphylococcus aureus, which is a common skin infection bacterium, was considered as the experimental strain, and the in vitro antibacterial activity and cytocompatibility of the Ag-MMT/CS colloid were investigated through various experiments. Subsequently, a rat skin infection model was established to explore the in vivo antibacterial effect. (3) Results: In vitro studies revealed that the Ag-MMT/CS colloid had a good antibacterial effect on S. aureus, with an inhibition zone diameter of 18 mm and an antibacterial rate of 99.18%. After co-culture with cells for 24 h and 72 h, the cell survival rates were 88% and 94%, respectively. The cells showed normal growth and proliferation, and no evident dead cells were observed under the laser confocal microscope. After applying the colloid to the rat skin infection model, the Ag-MMT/CS treatment group exhibited faster wound healing and better local exudation and absorption in the wound than the control group, suggesting that the Ag-MMT/CS colloid exhibited a better antibacterial effect on the S. aureus. (4) Conclusions: Ag+, chitosan, and MMT present in the Ag-MMT/CS colloid dressing exert synergistic effects, and it has good antibacterial effects, cytocompatibility, and hygroscopicity, indicating that this colloid has the potential to become a next-generation clinical antibacterial dressing.
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Affiliation(s)
- Kaining Yang
- Department of Bioengineering, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.Y.); (L.S.); (W.S.)
| | - Lei Shen
- Department of Bioengineering, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.Y.); (L.S.); (W.S.)
| | - Lin Zhang
- Hospital of Shandong University of Science and Technology, Qingdao 266590, China;
| | - Wenxin Sun
- Department of Bioengineering, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.Y.); (L.S.); (W.S.)
| | - Yuhong Zou
- Department of Bioengineering, College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China; (K.Y.); (L.S.); (W.S.)
| | - Yande Ren
- Affiliated Hospital of Medical College Qingdao University, Qingdao 266555, China
| | - Rongchang Zeng
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
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13
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Anesi A, Ferretti M, Salvatori R, Bellucci D, Cavani F, Di Bartolomeo M, Palumbo C, Cannillo V. In-vivo evaluations of bone regenerative potential of two novel bioactive glasses. J Biomed Mater Res A 2023; 111:1264-1278. [PMID: 36876550 DOI: 10.1002/jbm.a.37526] [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: 04/06/2022] [Revised: 02/13/2023] [Accepted: 02/23/2023] [Indexed: 03/07/2023]
Abstract
Due to the aging of population, materials able to repair damaged tissues are needed. Among others, bioactive glasses (BGs) have attracted a lot of interest due to their outstanding properties both for hard and soft tissues. Here, for the first time, two new BGs, which gave very promising results in preliminary in vitro-tests, were implanted in animals in order to evaluate their regenerative potential. The new BGs, named BGMS10 and Bio_MS and containing specific therapeutic ions, were produced in granules and implanted in rabbits' femurs for up to 60 days, to test their biocompatibility and osteoconduction. Additionally, granules of 45S5 Bioglass® were employed and used as a standard reference for comparison. The results showed that, after 30 days, the two novel BGs and 45S5 displayed a similar behavior, in terms of bone amount, thickness of new bone trabeculae and affinity index. On the contrary, after 60 days, 45S5 granules were mainly surrounded by wide and scattered bone trabeculae, separated by large amounts of soft tissue, while in BGMS10 and Bio_MS the trabeculae were thin and uniformly distributed around the BG granules. This latter scenario could be considered as more advantageous, since the features of the two novel BG granules allowed for the neo-formation of a uniformly distributed bony trabeculae, predictive of more favorable mechanical behavior, compared to the less uniform coarse trabeculae, separated by large areas of soft tissue in 45S5 granules. Thus, BGMS10 and Bio_MS could be considered suitable products for tissue regeneration in the orthopedic and dental fields.
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Affiliation(s)
- A Anesi
- Laboratorio Biomateriali, Dipartimento di Scienze Mediche e Chirurgiche Materno-Infantili e dell'Adulto, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - M Ferretti
- Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze - Sezione di Morfologia umana (c/o Policlinico), Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - R Salvatori
- Laboratorio Biomateriali, Dipartimento di Scienze Mediche e Chirurgiche Materno-Infantili e dell'Adulto, Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - D Bellucci
- Dipartimento di Ingegneria "Enzo Ferrari", Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - F Cavani
- Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze - Sezione di Morfologia umana (c/o Policlinico), Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - M Di Bartolomeo
- Chirurgia Maxillo Facciale e Odontostomatologia, Dipartimento di Scienze Chirurgiche Odontostomatologiche e Materno-Infantili, Università degli Studi di Verona, Verona, Italy
| | - C Palumbo
- Dipartimento di Scienze Biomediche, Metaboliche e Neuroscienze - Sezione di Morfologia umana (c/o Policlinico), Università degli Studi di Modena e Reggio Emilia, Modena, Italy
| | - V Cannillo
- Dipartimento di Ingegneria "Enzo Ferrari", Università degli Studi di Modena e Reggio Emilia, Modena, Italy
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Frisch E, Clavier L, Belhamdi A, Vrana NE, Lavalle P, Frisch B, Heurtault B, Gribova V. Preclinical in vitro evaluation of implantable materials: conventional approaches, new models and future directions. Front Bioeng Biotechnol 2023; 11:1193204. [PMID: 37576997 PMCID: PMC10416115 DOI: 10.3389/fbioe.2023.1193204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 07/12/2023] [Indexed: 08/15/2023] Open
Abstract
Nowadays, implants and prostheses are widely used to repair damaged tissues or to treat different diseases, but their use is associated with the risk of infection, inflammation and finally rejection. To address these issues, new antimicrobial and anti-inflammatory materials are being developed. Aforementioned materials require their thorough preclinical testing before clinical applications can be envisaged. Although many researchers are currently working on new in vitro tissues for drug screening and tissue replacement, in vitro models for evaluation of new biomaterials are just emerging and are extremely rare. In this context, there is an increased need for advanced in vitro models, which would best recapitulate the in vivo environment, limiting animal experimentation and adapted to the multitude of these materials. Here, we overview currently available preclinical methods and models for biological in vitro evaluation of new biomaterials. We describe several biological tests used in biocompatibility assessment, which is a primordial step in new material's development, and discuss existing challenges in this field. In the second part, the emphasis is made on the development of new 3D models and approaches for preclinical evaluation of biomaterials. The third part focuses on the main parameters to consider to achieve the optimal conditions for evaluating biocompatibility; we also overview differences in regulations across different geographical regions and regulatory systems. Finally, we discuss future directions for the development of innovative biomaterial-related assays: in silico models, dynamic testing models, complex multicellular and multiple organ systems, as well as patient-specific personalized testing approaches.
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Affiliation(s)
- Emilie Frisch
- Université de Strasbourg, CNRS UMR 7199, 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, Strasbourg, France
| | - Lisa Clavier
- Institut National de la Santé et de la Recherche Médicale, Inserm UMR_S 1121 Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
| | | | | | - Philippe Lavalle
- Institut National de la Santé et de la Recherche Médicale, Inserm UMR_S 1121 Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
- SPARTHA Medical, Strasbourg, France
| | - Benoît Frisch
- Université de Strasbourg, CNRS UMR 7199, 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, Strasbourg, France
| | - Béatrice Heurtault
- Université de Strasbourg, CNRS UMR 7199, 3Bio Team, Laboratoire de Conception et Application de Molécules Bioactives, Faculté de Pharmacie, Strasbourg, France
| | - Varvara Gribova
- Institut National de la Santé et de la Recherche Médicale, Inserm UMR_S 1121 Biomaterials and Bioengineering, Centre de Recherche en Biomédecine de Strasbourg, Strasbourg, France
- Université de Strasbourg, Faculté de Chirurgie Dentaire, Strasbourg, France
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15
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Gruber S, Nickel A. Toxic or not toxic? The specifications of the standard ISO 10993-5 are not explicit enough to yield comparable results in the cytotoxicity assessment of an identical medical device. FRONTIERS IN MEDICAL TECHNOLOGY 2023; 5:1195529. [PMID: 37388758 PMCID: PMC10304299 DOI: 10.3389/fmedt.2023.1195529] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/05/2023] [Indexed: 07/01/2023] Open
Abstract
Background Medical device manufacturers are obliged to prove the biocompatibility of their products when they come into contact with the human body. The requirements for the biological evaluation of medical devices are specified by the international standard series ISO 10993. Part five of this series describes the performance of in vitro cytotoxicity tests. This test evaluates the effects of medical device use on cell health. The existence of the specific standard suggests that the tests will produce reliable and comparable results. However, the ISO 10993-5 offers wide latitude in the test specifications. In the past, we noticed inconsistencies of the results from different laboratories. Objective To determine if the specifications of the standard ISO 10993-5 are explicit to ensure the comparability of test results and, if not, identify potential influencing factors. Methods An interlaboratory comparison was conducted for the in vitro cytotoxicity test according to ISO 10993-5. Fifty-two international laboratories evaluated the cytotoxicity for two unknown samples. One was polyethylene (PE) tubing, which is expected to be non-cytotoxic and the other was polyvinyl chloride (PVC) tubing, for which a cytotoxic potential was presumed. All laboratories were asked to perform an elution test with predefined extraction specifications. The other test parameters were freely chosen by the laboratories according to the guidelines set by the standard. Results To our surprise only 58 percent of the participating laboratories identified the cytotoxic potential of both materials as expected. Particularly for PVC a considerable variation of the results between the laboratories was observed [mean = 43 ± 30 (SD), min = 0, max = 100]. We showed that ten percent serum supplementation to the extraction medium, as well as longer incubation of the cells with the extract, greatly increased the test sensitivity for PVC. Conclusion The results clearly show that the specifications set by the ISO 10993-5 are not explicit enough to obtain comparable results for an identical medical device. To set requirements that ensure reliable cytotoxicity assessments, further research will be necessary to identify the best test conditions for specific materials and/or devices and the standard needs to be revised accordingly.
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Affiliation(s)
- Sarah Gruber
- Department of Product Safety, Johner Institut GmbH, Konstanz, Germany
| | - Angela Nickel
- Department of Regulatory Science, Johner Institut GmbH, Konstanz, Germany
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16
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Szymanski L, Gołaszewska K, Małkowska J, Kaczyńska J, Gołębiewska M, Gromadka B, Matak D. Safety and Performance of Hemostatic Powders. MEDICAL DEVICES-EVIDENCE AND RESEARCH 2023; 16:133-144. [PMID: 37313450 PMCID: PMC10259579 DOI: 10.2147/mder.s407838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/16/2023] [Indexed: 06/15/2023] Open
Abstract
Background Hemorrhage, a sudden and severe leakage of blood due to the disruption of blood vessels, is one of the most common causes of death from injuries worldwide. Severe bleeding accounts for more than 35% of pre-hospital deaths and about 40% of deaths recorded within 24 hours of injury. One of the methods for achieving homeostasis is the use of hemostatic powders. This study compares the basic safety and performance of the most popular hemostatic powders. Methods Basic safety of commercially available products were evaluated using MTT, MEM elution assay, and endotoxin testing. The in vitro performance was evaluated using water absorption capacity, water absorption rate, and adhesion strength assays. Results 4Seal, Starsil, and 4DryField extracts did not cause cytotoxicity in MTT and MEM elution assays. PerClot and SuperClot extracts demonstrated cytotoxic potential in MTT assay, while Arista extract was cytotoxic in both MEM elution and MTT assays. 4Seal has the lowest endotoxin contamination, followed by PerClot, 4DryField, SuperClot, Arista, and Starsil. 4Seal and Starsil showed significantly highest WAR among the tested samples, followed by 4DryField, Arista, PerClot, and SuperClot. Adhesion force is highest for 4Seal, followed by Starsil, PerClot, 4DryField Arista, and SuperClot. Conclusion 4Seal is the most versatile in terms of safety and functional properties compared to 4DryField, Arista, PerClot, Starsil, and SuperClot.
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Affiliation(s)
- Lukasz Szymanski
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Magdalenka, 05-552, Poland
- European Biomedical Institute, Jozefow, 05-410, Poland
| | | | | | | | | | | | - Damian Matak
- European Biomedical Institute, Jozefow, 05-410, Poland
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Krause EL, Hattersley AM, Abbinante-Nissen JM, Gutshall D, Woeller KE. Support of adult urinary incontinence products: recommendations to assure safety and regulatory compliance through application of a risk assessment framework. FRONTIERS IN REPRODUCTIVE HEALTH 2023; 5:1175627. [PMID: 37361342 PMCID: PMC10285159 DOI: 10.3389/frph.2023.1175627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/15/2023] [Indexed: 06/28/2023] Open
Abstract
Urinary incontinence (UI) or involuntary loss of urine is a common chronic medical condition among women. It is estimated that 5%-70% of the population experiences incontinence with most studies suggesting 25%-45% of the population. Varying definitions of UI (e.g., stress, urgency, mixed) exist, and inconsistent symptom assessment tools, age, and gender can affect the estimate of incidence. Disposable Adult Incontinence products were first introduced into the market in the late 1970s and initially were used mostly in nursing homes and hospitals. However, during the 1980s, the market for incontinence products via retail outlets dramatically increased as awareness of the benefits of the products grew and stigma about their use declined. Today's products that manage urine loss have an extensive history and have evolved with time. Always products were introduced into the market in 2014 and are designed to meet the needs of women of all ages. Considered medical devices in some countries, regional regulations and global guidelines require clear planning, thorough assessment, and concise documentation of clinical safety. This manuscript will briefly review the regulatory landscape with a specific focus on European Union regulations. As previously published, the iterative, risk assessment framework used to assess the safety of Always incontinence products confirms that these products are compatible with skin and can be used safely. This manuscript will expand on the current literature highlighting additional steps that help assure the safety and compliance of the products from quality assurance programs through comprehensive post-market safety surveillance. Recommendations to help ensure several of the key regulatory requirements are met are outlined in the context of a risk assessment framework used to assure safety.
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Affiliation(s)
- Edburga L. Krause
- Baby, Feminine and Family Care, Global Product Stewardship, The Procter & Gamble Company, Schwalbach, Germany
| | - Anne M. Hattersley
- Global Safety Surveillance and Analysis, The Procter & Gamble Company, Mason, OH, United States
| | - Joan M. Abbinante-Nissen
- Baby, Feminine and Family Care, Global Product Stewardship, The Procter & Gamble Company, Cincinnati, OH, United States
| | - Denise Gutshall
- Baby, Feminine and Family Care, Global Product Stewardship, The Procter & Gamble Company, Cincinnati, OH, United States
| | - Kara E. Woeller
- Baby, Feminine and Family Care, Global Product Stewardship, The Procter & Gamble Company, Cincinnati, OH, United States
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Folwaczny M, Ahantab R, Kessler A, Ern C, Frasheri I. Cytotoxicity of 3D printed resin materials for temporary restorations on human periodontal ligament (PDL-hTERT) cells. Dent Mater 2023; 39:529-537. [PMID: 37055304 DOI: 10.1016/j.dental.2023.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/15/2023]
Abstract
OBJECTIVES Various dental resin materials are available for the fabrication of temporary restorations using modern additive printing methods. Albeit these materials are placed for several months in intimate contact with dental hard and soft tissues, including the gingival crevice, there exists only insufficient evidence on the biocompatibility of these materials. This in vitro study aimed to delineate the biocompatibility of 3D printable materials on periodontal ligament cells (PDL-hTERTs). METHODS Samples of four dental resin materials for additive fabrication of temporary restorations using 3D printing (MFH, Nextdent; GC Temp, GC; Freeprint temp, Detax; 3Delta temp, Deltamed), one material for subtractive fabrication (Grandio disc, Voco) and one conventional temporary material (Luxatemp, DMG) were prepared with a standardized size according to the manufacturer's instructions. Human PDL-hTERTs were exposed to resin specimens or eluates of the material for 1, 2, 3, 6 and 9 days. For determination of cell viability, XTT assays were performed. In addition, the expression of the proinflammatory cytokines interleukin 6 and 8 (IL-6 and 8) was assessed in the supernatants with ELISA. Cell viability and the expression of IL-6 and 8 in presence of the resin material or their eluates was compared with untreated controls. Immunofluorescence staining for IL-6 and IL-8, as well as scanning electron microscopy of the discs after culturing, were performed. Differences between groups were analyzed with Student´s t-test for unpaired samples. RESULTS Compared to untreated control samples, the exposure against the resin specimen induced strong reduction of cell viability in case of the conventional material Luxatemp (p < 0.001) and the additive material 3Delta temp (p < 0.001) irrespective of the observation period. On the contrary, the presence of eluates of the various materials induced only minor changes in cell viability. Considering IL-6 (day 2: p = 0.001; day 6 and 9: p < 0.001) and IL-8 (day 1: p = 0.001; day 2, 3, 6, 9: p < 0.001) their expression was strongly reduced in presence of the eluate of Luxatemp. Except for IL-6 at day 1 and 6 also the material 3Delta temp caused significant reduction of both proinflammatory mediators at any time point. SIGNIFICANCE The conventional material Luxatemp and the additive material 3Delta temp appear to severely affect cell viability when in direct contact with PDL-hTERTs. The other tested materials of this new category of additive materials and the subtractive material Grandio seem to induce only minor changes in direct contact with these cells. Therefore, they could serve as a viable alternative in the fabrication of temporary restorations.
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Affiliation(s)
- Matthias Folwaczny
- Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-University, Goethestr. 70, D-80336 Munich, Germany.
| | - Roya Ahantab
- Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-University, Goethestr. 70, D-80336 Munich, Germany
| | - Andreas Kessler
- Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-University, Goethestr. 70, D-80336 Munich, Germany
| | - Christina Ern
- Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-University, Goethestr. 70, D-80336 Munich, Germany
| | - Iris Frasheri
- Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig-Maximilians-University, Goethestr. 70, D-80336 Munich, Germany
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Murashko AV, Frolova AA, Akovantseva AA, Kotova SL, Timashev PS, Efremov YM. The cell softening as a universal indicator of cell damage during cytotoxic effects. Biochim Biophys Acta Gen Subj 2023; 1867:130348. [PMID: 36977439 DOI: 10.1016/j.bbagen.2023.130348] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/03/2023] [Accepted: 03/20/2023] [Indexed: 03/28/2023]
Abstract
Cytotoxicity assays are essential tests in studies on the safety and biocompatibility of various substances and on the efficiency of anticancer drugs. The most frequently used assays commonly require application of externally added labels and read only collective response of cells. Recent studies show that the internal biophysical parameters of cells can be associated with the cellular damage. Therefore, using atomic force microscopy, we assessed the changes in the viscoelastic parameters of cells treated with eight different common cytotoxic agents to gain a more systematic view of the occurring mechanical changes. With the robust statistical analysis to account for both the cell-level variability and the experimental reproducibility, we have found that cell softening is a common response after each treatment. More precisely, the combined changes in the viscoelastic parameters of power-law rheology model led to a significant decrease of the apparent elastic modulus. The comparison with the morphological parameters (cytoskeleton and cell shape) demonstrated a higher sensitivity of the mechanical parameters versus the morphological ones. The obtained results support the idea of cell mechanics-based cytotoxicity tests and suggest a common way of a cell responding to damaging actions by softening.
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Suitability of R. pulmo Jellyfish-Collagen-Coated Well Plates for Cytocompatibility Analyses of Biomaterials. Int J Mol Sci 2023; 24:ijms24033007. [PMID: 36769326 PMCID: PMC9917789 DOI: 10.3390/ijms24033007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Cytocompatibility analyses of new implant materials or biomaterials are not only prescribed by the Medical Device Regulation (MDR), as defined in the DIN ISO Norm 10993-5 and -12, but are also increasingly replacing animal testing. In this context, jellyfish collagen has already been established as an alternative to mammalian collagen in different cell culture conditions, but a lack of knowledge exists about its applicability for cytocompatibility analyses of biomaterials. Thus, the present study was conducted to compare well plates coated with collagen type 0 derived from Rhizostoma pulmo with plates coated with bovine and porcine collagen. The coated well plates were analysed in vitro for their cytocompatibility, according to EN ISO 10993-5/-12, using both L929 fibroblasts and MC3T3 pre-osteoblasts. Thereby, the coated well plates were compared, using established materials as positive controls and a cytotoxic material, RM-A, as a negative control. L929 cells exhibited a significantly higher viability (#### p < 0.0001), proliferation (## p < 0.01), and a lower cytotoxicity (## p < 0.01 and # p < 0.05)) in the Jellagen® group compared to the bovine and porcine collagen groups. MC3T3 cells showed similar viability and acceptable proliferation and cytotoxicity in all collagen groups. The results of the present study revealed that the coating of well plates with collagen Type 0 derived from R. pulmo leads to comparable results to the case of well plates coated with mammalian collagens. Therefore, it is fully suitable for the in vitro analyses of the cytocompatibility of biomaterials or medical devices.
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de Sousa JMS, Nunes TADL, Rodrigues RRL, de Sousa JPA, Val MDCA, Coelho FADR, dos Santos ALS, Maciel NB, de Souza VMR, Machado YAA, Sousa PSDA, de Araújo AR, Rocha JA, de Sousa DP, da Silva MV, Arcanjo DDR, Rodrigues KADF. Cytotoxic and Antileishmanial Effects of the Monoterpene β-Ocimene. Pharmaceuticals (Basel) 2023; 16:183. [PMID: 37259336 PMCID: PMC9960243 DOI: 10.3390/ph16020183] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/17/2023] [Accepted: 01/20/2023] [Indexed: 08/05/2023] Open
Abstract
Leishmaniasis is a group of infectious-parasitic diseases with high mortality rates, and endemic in many regions of the globe. The currently available drugs present serious problems such as high toxicity, costs, and the emergence of drug resistance. This has stimulated research into new antileishmania drugs based on natural products and their derivatives. β-Ocimene is a monoterpene found naturally in the essential oils of many plant species which presents antileishmanial activity, and which has not yet been evaluated for its potential to inhibit the etiological agent of leishmaniasis. The aim of this work was to evaluate the activity of β-ocimene against Leishmania amazonensis, its cytotoxicity, and potential mechanisms of action. β-Ocimene presented direct activity against the parasite, with excellent growth inhibition of promastigotes (IC50 = 2.78 μM) and axenic amastigotes (EC50 = 1.12 μM) at concentrations non-toxic to RAW 264.7 macrophages (CC50 = 114.5 µM). The effect is related to changes in membrane permeability and resulting abnormalities in the parasitic cell shape. These were, respectively, observed in membrane integrity and atomic force microscopy assays. β-Ocimene was also shown to act indirectly, with greater activity against intra-macrophagic amastigotes (EC50 = 0.89 μM), increasing TNF-α, nitric oxide (NO), and reactive oxygen species (ROS), with lysosomal effects, as well as promoting decreases in IL-10 and IL-6. Against intra-macrophagic amastigote forms the selectivity index was higher than the reference drugs, being 469.52 times more selective than meglumine antimoniate, and 42.88 times more selective than amphotericin B. Our results suggest that β-ocimene possesses promising in vitro antileishmania activity and is a potential candidate for investigation in in vivo assays.
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Affiliation(s)
- Julyanne Maria Saraiva de Sousa
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Thaís Amanda de Lima Nunes
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Raiza Raianne Luz Rodrigues
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - João Paulo Araújo de Sousa
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | | | - Francisco Alex da Rocha Coelho
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Airton Lucas Sousa dos Santos
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Nicolle Barreira Maciel
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Vanessa Maria Rodrigues de Souza
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Yasmim Alves Aires Machado
- Laboratory of Infectious Diseases, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Paulo Sérgio de Araújo Sousa
- Research Group on Medicinal Chemistry and Biotechnology, Federal University of Maranhão, São Bernardo 65550-000, MA, Brazil
| | - Alyne Rodrigues de Araújo
- Research Center in Biodiversity and Biotechnology, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Jefferson Almeida Rocha
- Research Group on Medicinal Chemistry and Biotechnology, Federal University of Maranhão, São Bernardo 65550-000, MA, Brazil
- Research Center in Biodiversity and Biotechnology, Campus Ministro Reis Velloso, Parnaíba Delta Federal University, Parnaíba 64202-020, PI, Brazil
| | - Damião Pergentino de Sousa
- Laboratory of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Campus I, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Marcos Vinicius da Silva
- Laboratory of Immunology and Parasitology, Institute of Biological and Natural Sciences, Federal University of Triângulo Mineiro, Uberaba 38025-180, MG, Brazil
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Reyna-Urrutia VA, Estevez M, González-González AM, Rosales-Ibáñez R. 3D scaffolds of caprolactone/chitosan/polyvinyl alcohol/hydroxyapatite stabilized by physical bonds seeded with swine dental pulp stem cell for bone tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2022; 33:81. [PMID: 36484847 PMCID: PMC9734232 DOI: 10.1007/s10856-022-06702-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/10/2022] [Indexed: 06/07/2023]
Abstract
Bone Regeneration represents a clinical need, related to bone defects such as congenital anomalies, trauma with bone loss, and/or some pathologies such as cysts or tumors This is why a polymeric biomaterial that mimics the osteogenic composition and structure represents a high potential to face this problem. The method of obtaining these materials was first to prepare a stabilized hydrogel by means of physical bonds and then to make use of the lyophilization technique to obtain the 3D porous scaffolds with temperature conditions of -58 °C and pressure of 1 Pa for 16 h. The physicochemical and bioactive properties of the scaffolds were studied. FTIR and TGA results confirm the presence of the initial components in the 3d matrix of the scaffold. The scaffolds exhibited a morphology with pore size and interconnectivity that promote good cell viability. Together, the cell viability and proliferation test, Alamar BlueTM and the differentiation test: alizarin staining, showed the ability of physically stabilized scaffolds to proliferate and differentiate swine dental pulp stem cell (DPSCs) followed by mineralization. Therefore, the Cs-PCL-PVA-HA scaffold stabilized by physical bonds has characteristics that suggest great utility for future complementary in vitro tests and in vivo studies on bone defects. Likewise, this biomaterial was enhanced with the addition of HA, providing a scaffold with osteoconductive properties necessary for good regeneration of bone tissue. Graphical abstract.
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Affiliation(s)
- V A Reyna-Urrutia
- Tissue Engineering and Translational Medicine Laboratory, Iztacala School of Higher Studies, National Autonomous University of Mexico, Tenayuca-Chalmita S/N, Cuautepec Barrio Bajo, Gustavo A. Madero, Mexico, CP, 07239, Mexico
| | - Miriam Estevez
- Center for Applied Physics and Advanced Technology, National Autonomous University of Mexico, Campus Juriquilla, Boulevard Juriquilla No. 3001, Querétaro, Juriquilla, CP, 76230, Mexico
| | - A M González-González
- Tissue Engineering and Translational Medicine Laboratory, Iztacala School of Higher Studies, National Autonomous University of Mexico, Tenayuca-Chalmita S/N, Cuautepec Barrio Bajo, Gustavo A. Madero, Mexico, CP, 07239, Mexico
| | - R Rosales-Ibáñez
- Tissue Engineering and Translational Medicine Laboratory, Iztacala School of Higher Studies, National Autonomous University of Mexico, Tenayuca-Chalmita S/N, Cuautepec Barrio Bajo, Gustavo A. Madero, Mexico, CP, 07239, Mexico.
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Stachurová T, Rybková Z, Škrlová K, Malachová K, Havlíček M, Plachá D. Biocompatibility and biocidal effects of modified polylactide composites. Front Microbiol 2022; 13:1031783. [PMID: 36504788 PMCID: PMC9731850 DOI: 10.3389/fmicb.2022.1031783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/07/2022] [Indexed: 11/25/2022] Open
Abstract
Polylactide (PLA) materials treated with antimicrobial fillers represent a suitable alternative to the production of medical devices. Their advantage is that they can prevent the growth of microorganisms and the formation of microbial biofilms on the surface and around composites. The work is focused on the evaluation of biocompatibility and biocide effect of PLA composite films filled with vermiculite and graphene oxide modified with silver (Ag+ and Ag nanoparticles), hexadecylpyridinium (HDP) and hexadecyltrimethylammonium (HDTMA) cations and their degradation leachates monitored at 1-3-6-month intervals. The antimicrobial effect of the leachates was detected by microdilution methods on gram-negative (Escherichia coli, Pseudomonas aeruginosa, Proteus mirabilis), gram-positive (Staphylococcus aureus, Streptococcus salivarius) bacteria and yeast (Candida albicans). The biocidal effect of composites on biofilm formation on the surface of composites was monitored by Christensen method and autoaggregation and motility tests. The biocompatibility of the composite and the leachates was assessed by 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide (MTT) cytotoxicity assay. The evaluation of the antimicrobial effect of the leachates demonstrated that leachates of PLA composite filled with graphene oxide and Ag+ showed a stronger antimicrobial effect than leachates of PLA composite filled with vermiculite and Ag+ and Ag nanoparticles. The leachates of PLA composites containing vermiculite with HDP and HDTMA cations had a higher antimicrobial effect on G+ bacteria and yeast than G- bacteria. Bacterial growth, biofilm formation, autoaggregation and motility of the tested bacteria were most inhibited by the composite with vermiculite and Ag+ and Ag nanoparticles. Even after a 6-month degradation of this composite, bacterial growth and biofilm formation continued to be strongly inhibited up to 42 and 91%, respectively. The cytotoxic effect was proved only in the leachate of the composite with vermiculite containing HDP after 6 months of its degradation. Tests evaluating the biocompatibility of materials have shown that the vermiculite is the most preferred carrier and can be used in the future to bind other compounds. The study confirmed that PLA composite filled with vermiculite and Ag+ and Ag nanoparticles was the most stable and effective composite with the best biocompatible and biocidal properties.
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Affiliation(s)
- Tereza Stachurová
- Department of Biology and Ecology, University of Ostrava, Ostrava, Czechia,*Correspondence: Tereza Stachurová,
| | - Zuzana Rybková
- Department of Biology and Ecology, University of Ostrava, Ostrava, Czechia
| | - Kateřina Škrlová
- Nanotechnology Centre, VSB–Technical University of Ostrava, Ostrava, Czechia,Center of Advanced Innovation Technologies, VSB–Technical University of Ostrava, Ostrava-Poruba, Czechia
| | - Kateřina Malachová
- Department of Biology and Ecology, University of Ostrava, Ostrava, Czechia,Kateřina Malachová,
| | | | - Daniela Plachá
- Nanotechnology Centre, VSB–Technical University of Ostrava, Ostrava, Czechia,Energy Units for Utilization of Non-Traditional Energy Source (ENET) Centre, Center for Energy and Environmental Technologies (CEET), VSB–Technical University of Ostrava, Ostrava, Czechia
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Aiyer A, Das T, Whiteley GS, Glasbey T, Kriel FH, Farrell J, Manos J. The Efficacy of an N-Acetylcysteine-Antibiotic Combination Therapy on Achromobacter xylosoxidans in a Cystic Fibrosis Sputum/Lung Cell Model. Biomedicines 2022; 10:2886. [PMID: 36359406 PMCID: PMC9687303 DOI: 10.3390/biomedicines10112886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 09/29/2023] Open
Abstract
Cystic fibrosis (CF) is a disorder causing dysfunctional ion transport resulting in the accumulation of viscous mucus. This environment fosters a chronic bacterial biofilm-associated infection in the airways. Achromobacter xylosoxidans, a gram-negative aerobic bacillus, has been increasingly associated with antibiotic resistance and chronic colonisation in CF. In this study, we aimed to create a reproducible model of CF infection using an artificial sputum medium (ASMDM-1) with bronchial (BEAS-2B) and macrophage (THP-1) cells to test A. xylosoxidans infection and treatment toxicity. This study was conducted in three distinct stages. First, the tolerance of BEAS-2B cell lines and two A. xylosoxidans strains against ASMDM-1 was optimised. Secondly, the cytotoxicity of combined therapy (CT) comprising N-acetylcysteine (NAC) and the antibiotics colistin or ciprofloxacin was tested on cells alone in the sputum model in both BEAS-2B and THP-1 cells. Third, the efficacy of CT was assessed in the context of a bacterial infection within the live cell/sputum model. We found that a model using 20% ASMDM-1 in both cell populations tolerated a colistin-NAC-based CT and could significantly reduce bacterial loads in vitro (~2 log10 CFU/mL compared to untreated controls). This pilot study provides the foundation to study other bacterial opportunists that infect the CF lung to observe infection and CT kinetics. This model also acts as a springboard for more complex co-culture models.
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Affiliation(s)
- Aditi Aiyer
- Charles Perkins Centre, Infection, Immunity and Inflammation, Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| | - Theerthankar Das
- Charles Perkins Centre, Infection, Immunity and Inflammation, Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| | - Gregory S. Whiteley
- Charles Perkins Centre, Infection, Immunity and Inflammation, Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
- Whiteley Corporation, Level 5, 12 Mount Street North Sydney, Sydney, NSW 2060, Australia
- School of Medicine, Western Sydney University, Sydney, NSW 2566, Australia
| | - Trevor Glasbey
- Whiteley Corporation, 19-23 Laverick Avenue, Tomago, NSW 2322, Australia
| | - Frederik H. Kriel
- Whiteley Corporation, 19-23 Laverick Avenue, Tomago, NSW 2322, Australia
| | - Jessica Farrell
- Charles Perkins Centre, Infection, Immunity and Inflammation, Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
- Whiteley Corporation, Level 5, 12 Mount Street North Sydney, Sydney, NSW 2060, Australia
| | - Jim Manos
- Charles Perkins Centre, Infection, Immunity and Inflammation, Sydney Institute for Infectious Diseases, School of Medical Sciences, The University of Sydney, Sydney, NSW 2006, Australia
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Curcumin-Loaded Mesoporous Silica Nanoparticles Dispersed in Thermo-Responsive Hydrogel as Potential Alzheimer Disease Therapy. Pharmaceutics 2022; 14:pharmaceutics14091976. [PMID: 36145723 PMCID: PMC9504573 DOI: 10.3390/pharmaceutics14091976] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/10/2022] [Accepted: 09/13/2022] [Indexed: 11/30/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by cognitive and behavioral impairment. Curcumin-loaded mesoporous silica nanoparticles (MSN-CCM) can overcome the drawbacks related to the free curcumin (CCM) clinical application, such as water insolubility and low bioavailability, besides acting over the main causes associated to AD. A thermo-responsive hydrogel is an interesting approach for facilitating the administration of the nanosystem via a nasal route, as well as for overcoming mucociliary clearance mechanisms. In light of this, MSN-CCM were dispersed in the hydrogel and evaluated through in vitro and in vivo assays. The MSNs and MSN-CCM were successfully characterized by physicochemical analysis and a high value of the CCM encapsulation efficiency (EE%, 87.70 ± 0.05) was achieved. The designed thermo-responsive hydrogel (HG) was characterized by rheology, texture profile analysis, and ex vivo mucoadhesion, showing excellent mechanical and mucoadhesive properties. Ex vivo permeation studies of MSN-CCM and HG@MSN-CCM showed high permeation values (12.46 ± 1.08 and 28.40 ± 1.88 μg cm−2 of CCM, respectively) in porcine nasal mucosa. In vivo studies performed in a streptozotocin-induced AD model confirmed that HG@MSN-CCM reverted the cognitive deficit in mice, acting as a potential formulation in the treatment of AD.
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Szymanski L, Gołaszewska K, Małkowska J, Gołębiewska M, Kaczyńska J, Gromadka B, Matak D. Safety and performance of surgical adhesives. PLoS One 2022; 17:e0271531. [PMID: 36006958 PMCID: PMC9409600 DOI: 10.1371/journal.pone.0271531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 07/05/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Tissue adhesives are an alternative to conventional surgical sutures to reduce the time and cost of wound closure and to improve patient comfort. The use of tissue adhesives does not require any subsequent intervention and significantly lowers the volume and rate of blood loss, and reduces the need for transfusions during and after surgery. However, based on their formulation, tissue adhesives' safety profile and functional properties may differ. Therefore, this study aimed to evaluate the basic safety and performance of NE'X Glue® Surgical Sealant, BioGlue® Surgical Sealant, and PREVELEAKTM Surgical Sealant in vitro. METHODS The basic safety of commercially available tissue adhesives was evaluated using MEM elution assay according to ISO 10993-5 and endotoxin level according to 85. USP. The in vitro performance was evaluated using lap-shear by tension loading test, burst strength test, degradation, and swelling assays. RESULTS NE'X Glue®, BioGlue®, and PREVELEAKTM did not cause cytotoxicity in MEM elution assay. All surgical adhesives are below the general limit of endotoxin contamination of 20 EU/device. NE'X Glue® and BioGlue® showed the highest and comparable strength properties in lap shear and burst strength tests compared to PREVELEAKTM. NE'X Glue® and PREVELEAKTM are characterized by lower degradation potential than BioGlue®. PREVELEAKTM is characterized by the highest swelling when compared to NE'X Glue® and BioGlue®. CONCLUSIONS NE'X Glue® is most versatile in terms of functional properties while maintaining the same safety profile as BioGlue® and PREVELEAKTM.
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Affiliation(s)
- Lukasz Szymanski
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Science, Magdalenka, Poland
- European Biomedical Institute, Jozefow, Poland
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Chmayssem A, Tanase CE, Verplanck N, Gougis M, Mourier V, Zebda A, Ghaemmaghami AM, Mailley P. New Microfluidic System for Electrochemical Impedance Spectroscopy Assessment of Cell Culture Performance: Design and Development of New Electrode Material. BIOSENSORS 2022; 12:bios12070452. [PMID: 35884254 PMCID: PMC9313146 DOI: 10.3390/bios12070452] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 06/01/2023]
Abstract
Electrochemical impedance spectroscopy (EIS) is widely accepted as an effective and non-destructive method to assess cell health during cell-culture. However, there is a lack of compact devices compatible with microfluidic integration and microscopy that could provide the real-time and non-invasive monitoring of cell-cultures using EIS. In this paper, we reported the design and characterization of a modular EIS testing system based on a patented technology. This device was fabricated using easily processable methodologies including screen-printing of the impedance electrodes and molding or micromachining of the cell culture chamber with an easy assembly procedure. Accordingly, to obtain processable, biocompatible and sterilizable electrode materials that lower the impact of interfacial impedance on TEER (Transepithelial electrical resistance) measurements, and to enable concomitant microscopy observations, we optimized the formulation of the electrode inks and the design of the EIS electrodes, respectively. First, electrode materials were based on carbon biocompatible inks enriched with IrOx particles to obtain low interfacial impedance electrodes approaching the performances of classical non-biocompatible Ag/AgCl second-species electrodes. Secondly, we proposed three original electrode designs, which were compared to classical disk electrodes that were optically compatible with microscopy. We assessed the impact of the electrode design on the response of the impedance sensor using COMSOL Multiphysics. Finally, the performance of the impedance spectroscopy devices was assessed in vitro using human airway epithelial cell cultures.
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Affiliation(s)
- Ayman Chmayssem
- University Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France; (N.V.); (M.G.); (V.M.)
- University Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France;
| | - Constantin Edi Tanase
- Immunology & Immuno-Bioengineering Group, School of Life Sciences, Faculty of Medicine & Health Sciences, University of Nottingham, Nottingham NG7 2RD, UK; (C.E.T.); (A.M.G.)
| | - Nicolas Verplanck
- University Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France; (N.V.); (M.G.); (V.M.)
| | - Maxime Gougis
- University Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France; (N.V.); (M.G.); (V.M.)
| | - Véronique Mourier
- University Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France; (N.V.); (M.G.); (V.M.)
| | - Abdelkader Zebda
- University Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France;
| | - Amir M. Ghaemmaghami
- Immunology & Immuno-Bioengineering Group, School of Life Sciences, Faculty of Medicine & Health Sciences, University of Nottingham, Nottingham NG7 2RD, UK; (C.E.T.); (A.M.G.)
| | - Pascal Mailley
- University Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France; (N.V.); (M.G.); (V.M.)
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Frasheri I, Aumer K, Keßler A, Miosge N, Folwaczny M. Effects of resin materials dedicated for additive manufacturing of temporary dental restorations on human gingival keratinocytes. J ESTHET RESTOR DENT 2022; 34:1105-1112. [PMID: 35731110 DOI: 10.1111/jerd.12938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 05/30/2022] [Accepted: 05/30/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This study investigated the effect of eluates of conventional and 3D-printed resin materials for manufacturing temporary dental restorations on gingival keratinocytes. METHODS Three-dimensional (3D)-printed resin materials: 3Delta temp (Deltamed), NextDent MFH (Nextdent), Freeprint temp (Detax), GC temp (GC), were compared to Grandio disc (Voco) and Luxatemp (DMG). Human gingival keratinocytes (IHGKs) were exposed to eluates of the materials and XTT assays were performed at 24 h, 48 h, 72 h, or 144 h. For quantification of the proinflammatory response, the protein amount of IL-6 and 8 was determined in the supernatants using ELISA. One-way ANOVA with post hoc analysis was used to compare differences in cell viability and IL-6 and IL-8 levels between groups. RESULTS At 24 h, and more remarkably at 48 h, a significant decrease in cell viability occurred for the 3D-printed materials compared to the untreated IHGKs, but also compared to Grandio disc and Luxatemp. Except for the expression of IL-8 in presence of the eluate of Grandio disc at 24 and 48 h, all tested materials caused attenuation of IL-6 and 8 from IHGKs for any observation period. CONCLUSIONS The materials for additive manufacturing affect cell proliferation differently than the subtractive manufactured material Grandio disc and the conventional material Luxatemp. CLINICAL SIGNIFICANCE In comparison to conventional and subtractive manufactured restorations, 3D printed temporary restorations might induce more negative effects on the gingival and probably also on pulpal health since viability and the proinflammatory response of oral keratinocytes are more intensively affected by these materials.
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Affiliation(s)
- Iris Frasheri
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Munich, Germany
| | - Katharina Aumer
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Munich, Germany
| | - Andreas Keßler
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Munich, Germany
| | - Nicolai Miosge
- Tissue Regeneration Work Group, Department of Prosthodontics, Medical Faculty, Georg-August-University, Göttingen, Germany
| | - Matthias Folwaczny
- Department of Conservative Dentistry and Periodontology, University Hospital, LMU Munich, Munich, Germany
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Beninger PG, Chérel D, Le Pennec G, Shumway SE. Evolutionary and ecological insights from vital staining of bivalve oocytes: A Red Queen at the sweepstakes? Ecosphere 2022. [DOI: 10.1002/ecs2.4047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Peter G. Beninger
- Laboratoire de Biologie Marine, Faculté des Sciences Université de Nantes Nantes Cedex France
| | - Daphné Chérel
- Laboratoire de Biologie Marine, Faculté des Sciences Université de Nantes Nantes Cedex France
| | - Gaël Le Pennec
- Laboratoire de Biotechnologie et Chimie Marines Université de Bretagne Sud Lorient France
| | - Sandra E. Shumway
- Department of Marine Sciences University of Connecticut Groton Connecticut USA
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Cytotoxicity and Genotoxicity of Epoxy Resin-Based Root Canal Sealers before and after Setting Procedures. LIFE (BASEL, SWITZERLAND) 2022; 12:life12060847. [PMID: 35743878 PMCID: PMC9227444 DOI: 10.3390/life12060847] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/03/2022] [Accepted: 06/06/2022] [Indexed: 11/29/2022]
Abstract
Epoxy resin-based sealers are commonly used for successful endodontic treatment. This study aimed to evaluate the cytotoxicity and genotoxicity of epoxy resin-based sealers under unset and set conditions. Three epoxy resin-based sealers were used: Adseal, AH Plus, and Dia-Proseal. To test cytotoxicity, an agar overlay test and a 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay were performed using unset and set sealers on L929 mouse fibroblasts. The genotoxicity test of the comet assay was performed using the same cell line. Extract dilutions in the culture media were used as test materials for the MTT and comet assays. The comet tail produced by the damaged DNA was calculated by image analyses. Statistical analyses were performed using one-way analysis of variance and Tukey’s post hoc test. Unset sealers did not show defined decolorized areas. Hardened specimens of resin-based sealers showed circular discolored zones in the agar overlay test. Dia-Proseal was the least cytotoxic after hardening. These results were confirmed in the MTT assay. Cell viability was significantly higher in cells treated with hardened sealers in both groups than that in cells treated with freshly mixed sealers in the MTT assay. Unset AH Plus® and Dia-Proseal™ significantly increased cell viability with decreasing dilution. Adseal™ was the least cytotoxic. Freshly mixed Adseal™ was more genotoxic when freshly mixed than when set. Unset epoxy resin-based sealers were generally more cytotoxic and genotoxic than set materials. Cytotoxicity does not always match the genotoxicity results; therefore, various test tools are required to test toxicity. It is necessary to properly evaluate the toxic effects to establish a biocompatibility test that mimics clinical conditions.
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Nanofibrous materials affect the reaction of cytotoxicity assays. Sci Rep 2022; 12:9047. [PMID: 35641539 PMCID: PMC9156782 DOI: 10.1038/s41598-022-13002-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/09/2022] [Indexed: 11/23/2022] Open
Abstract
Nanofibrous materials are widely investigated as a replacement for the extracellular matrix, the 3D foundation for cells in all tissues. However, as with every medical material, nanofibers too must pass all safety evaluations like in vitro cytotoxicity assays or in vivo animal tests. Our literature research showed that differences in results of widely used cytotoxicity assays applied to evaluate nanofibrous materials are poorly understood. To better explore this issue, we prepared three nanofibrous materials with similar physical properties made of poly-L-lactic acid, polyurethane, and polycaprolactone. We tested five metabolic cytotoxicity assays (MTT, XTT, CCK-8, alamarBlue, PrestoBlue) and obtained different viability results for the same nanofibrous materials. Further, the study revealed that nanofibrous materials affect the reaction of cytotoxicity assays. Considering the results of both described experiments, it is evident that validating all available cytotoxicity assays for nanofibrous materials and possibly other highly porous materials should be carefully planned and verified using an additional analytical tool, like scanning electron microscopy or, more preferably, confocal microscopy.
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Doustdar F, Olad A, Ghorbani M. Effect of glutaraldehyde and calcium chloride as different crosslinking agents on the characteristics of chitosan/cellulose nanocrystals scaffold. Int J Biol Macromol 2022; 208:912-924. [PMID: 35367272 DOI: 10.1016/j.ijbiomac.2022.03.193] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/17/2022] [Accepted: 03/28/2022] [Indexed: 11/25/2022]
Abstract
The effect of glutaraldehyde and calcium cations as covalent and ionic crosslinkers was investigated on the main characteristics of scaffolds based on chitosan and cellulose nanocrystals. Therefore, four different scaffolds based on chitosan/cellulose nanocrystals with different crosslinking methods were fabricated using the freeze-drying method for potential use in bone tissue engineering. The structural and chemical features of prepared scaffolds were studied by the FTIR technique. FESEM images revealed that all scaffold samples are porous three-dimensional networks in which the pores are connected. TGA analysis showed that the thermal stability of scaffolds based on chitosan/cellulose nanocrystals has not been changed significantly by using different crosslinking methods. The chitosan/cellulose nanocrystals scaffold crosslinked by glutaraldehyde represented the highest compressive strength and the uncrosslinked scaffold showed the highest swelling ratio in comparison to the other scaffolds. The fastest degradation rate belonged to the scaffold crosslinked by calcium cations. FESEM images and EDX analysis confirmed that fabricated scaffolds have good biomineralization ability. The cell viability and cell attachment results indicated that all four scaffolds support cell proliferation and cell adhesion. However, the viability of NIH3T3 fibroblast cells in the presence of glutaraldehyde-containing scaffolds was lower than that of other scaffolds.
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Affiliation(s)
- Fatemeh Doustdar
- Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Ali Olad
- Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
| | - Marjan Ghorbani
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Barbieri SF, da Costa Amaral S, Mazepa E, Filho APS, Sassaki GL, Silveira JLM. Isolation, NMR characterization and bioactivity of a (4-O-methyl-α-D-glucurono)-β-D-xylan from Campomanesia xanthocarpa Berg fruits. Int J Biol Macromol 2022; 207:893-904. [PMID: 35358579 DOI: 10.1016/j.ijbiomac.2022.03.150] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 03/10/2022] [Accepted: 03/23/2022] [Indexed: 11/26/2022]
Abstract
Hemicellulose-type polysaccharides were isolated from Campomanesia xanthocarpa fruits by alkaline extraction and submitted to fractionation processes giving rise to eluted (GE-300) and retained (GR-300) fractions. GE-300 presented a mixture of galactoglucomannans (GGM) and glucuronoxylans (MGX), while the GR-300 fraction is composed only of MGX. In this way, the chemical structure of MGX, investigated by 1D 1H, 13C and 2D 1H-13C HSQC, 1H-1H COSY and 1H-13C HMBC NMR spectroscopy, revealed that the chemical structure of polysaccharide is a (4-O-methyl-α-D-glucurono)-D-xylan. Deep and precise NMR chemical shift determination of clean and specific 1H NMR glycosyl units were developed by 1D TOCSY and 1D NOESY analysis. This approach demonstrated unequivocally that 4-O-methyl-α-D-glucopyranosyl uronic acid group is linked to O-2 of a (1 → 4)-β-D-xylan in the main chain. Furthermore, MGX scavenged DPPH radical (0.5 to 1.0 mg mL-1) and was not cytotoxic to human dermal fibroblasts at concentrations up to 1.0 mg mL-1, as demonstrated by neutral red and crystal violet assays, evidencing in vitro biocompatibility. The structure elucidation of GR-300 together with its bioactivity assessment contributed to better understand the chemical characteristics of C. xanthocarpa hemicelluloses and may provide structural basis for future structure-property studies.
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Affiliation(s)
- Shayla Fernanda Barbieri
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil
| | - Sarah da Costa Amaral
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil
| | - Ester Mazepa
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil
| | | | - Guilherme Lanzi Sassaki
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Paraná, CEP 81.531-980 Curitiba, PR, Brazil
| | - Joana Léa Meira Silveira
- Postgraduate Program in Biochemistry Sciences, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR 81.531-980, Brazil.
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Santana Andrade JK, Chagas Barros RG, Pereira UC, Nogueira JP, Gualberto NC, Santos de Oliveira C, Shanmugam S, Narain N. Bioaccessibility of bioactive compounds after in vitro gastrointestinal digestion and probiotics fermentation of Brazilian fruits residues with antioxidant and antidiabetic potential. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112469] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Santana Andrade JK, Chagas Barros RG, Gualberto NC, Santos de Oliveira C, Shanmugam S, Narain N. Influence of in vitro gastrointestinal digestion and probiotic fermentation on the bioaccessibility of gallic acid and on the antioxidant potential of Brazilian fruit residues. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Lalli D, Ferrauto G, Terreno E, Carniato F, Botta M. Mn(II)-Conjugated silica nanoparticles as potential MRI probes. J Mater Chem B 2021; 9:8994-9004. [PMID: 34585711 DOI: 10.1039/d1tb01600h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel Mn(II)-based nanoprobes were rationally designed as high contrast enhancing agents for magnetic resonance imaging (MRI) and obtained by anchoring a Mn(II)-CDTA derivative to the surface of organo-modified silica nanoparticles (SiNPs). Large payloads of paramagnetic metal-chelates have been immobilized on biocompatible SiNPs with spherical shape and narrow size distribution of 80-90 nm, resulting in a relaxivity gain of 250% at clinical fields (0.5 T) as compared to the free chelate. Such substantial efficacy enhancement of the nanoprobes is mainly attributed to the restriction of the rotational dynamics of the conjugated complex, as revealed by comprehensive 1H-NMR relaxometric investigations. The paramagnetic nanospheres exhibit good colloidal stability over time in biological matrices, allowing for MRI applications. High image contrast was found in T1w-MRI images collected at 1 T on phantoms containing relatively small amounts of contrast agent (CA), for which low cellular toxicity was observed on three different cell lines. Preliminary in vivo studies on healthy mice demonstrated the efficiency of the novel Mn-based silica nanoparticle as T1w-MRI probes, resulting in significant contrast enhancement in the liver. These findings demonstrate that these novel Mn-SiNPs are high efficacy CAs suitable for preclinical MRI applications.
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Affiliation(s)
- Daniela Lalli
- Magnetic Resonance Platform (PRISMA-UPO), Department of Sciences and Technological Innovation, University of Eastern Piedmont "Amedeo Avogadro", Viale Teresa Michel 11, 15121-Alessandria, Italy.
| | - Giuseppe Ferrauto
- Molecular Imaging Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Enzo Terreno
- Molecular Imaging Center, Department of Molecular Biotechnology and Health Sciences, University of Torino, Via Nizza 52, 10126 Torino, Italy
| | - Fabio Carniato
- Magnetic Resonance Platform (PRISMA-UPO), Department of Sciences and Technological Innovation, University of Eastern Piedmont "Amedeo Avogadro", Viale Teresa Michel 11, 15121-Alessandria, Italy.
| | - Mauro Botta
- Magnetic Resonance Platform (PRISMA-UPO), Department of Sciences and Technological Innovation, University of Eastern Piedmont "Amedeo Avogadro", Viale Teresa Michel 11, 15121-Alessandria, Italy.
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Chauhan P, Bhasin AK, Chaudhary S. Quinone-based fluorophore: A promising luminescent functional material for effective sensing of serine. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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38
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Li M, Xu G, Guo N, Zheng N, Dong W, Li X, Yu Y. Influences and mechanisms of nanoparticles on pentachloronitrobenzene accumulation by earthworms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:51471-51479. [PMID: 33983610 DOI: 10.1007/s11356-021-14368-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Pesticides and nanoparticles may coexist in soil; however, influences of nanoparticles on accumulation of pesticides in terrestrial organisms are still unclear. This study aims to investigate the influences and mechanisms of metal oxide nanoparticles (nano ZnO and nano CuO) on accumulation of pentachloronitrobenzene (PCNB) in earthworms and their combined toxicity. The earthworms were cultivated in the soil spiked with nanoparticles (10, 50, 250 mg/kg) and PCNB (100 μg/kg) for 21 days. The concentrations of PCNB in earthworms in binary exposure treatments (PCNB + ZnO and PCNB + CuO) reached 2.47 and 3.13 times of that in individual PCNB exposure treatment, indicating that nanoparticles facilitated the accumulation of PCNB in earthworms. The contents of reactive oxygen species (ROS) in earthworms in treatments PCNB + ZnO 250 and PCNB + CuO 250 reached 379 and 316 fluorescence intensity/mg Protein, respectively, which were significantly higher than that in control group (183 fluorescence intensity/mg protein), indicating that nanoparticles would cause oxidative stress to earthworms. Earthworm coelomocytes were extracted from healthy earthworms and cultivated in culture media in cytotoxicity tests. Changes of intracellular ROS contents and cell viability suggested that PCNB and nanoparticles caused serious oxidative damage to earthworm coelomocytes, thus leading to the damage of cell membrane and cell death. In in vivo tests, changes of biomarkers (ROS and malondialdehyde) demonstrated that these pollutants injured the earthworms. Increased accumulation of PCNB in binary exposure treatments was due to the damage of body cavity caused by nanoparticles. This study provides a novel hypothesis for nanoparticles facilitating organic pollutants entering terrestrial organisms and determines whether nanoparticles would bring about greater environmental risks of other pollutants.
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Affiliation(s)
- Ming Li
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Guanghui Xu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Na Guo
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Na Zheng
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, Changchun, 130021, China
| | - Weihua Dong
- College of Geographical Science, Changchun Normal University, Changchun, 130032, China
| | - Xiao Li
- Liaoning Renqia Daofeng Testing Technology Co Ltd, Shenyang, 110034, China
| | - Yong Yu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China.
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Keskin D, Zu G, Forson AM, Tromp L, Sjollema J, van Rijn P. Nanogels: A novel approach in antimicrobial delivery systems and antimicrobial coatings. Bioact Mater 2021; 6:3634-3657. [PMID: 33898869 PMCID: PMC8047124 DOI: 10.1016/j.bioactmat.2021.03.004] [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: 02/09/2021] [Accepted: 03/02/2021] [Indexed: 12/15/2022] Open
Abstract
The implementation of nanotechnology to develop efficient antimicrobial systems has a significant impact on the prospects of the biomedical field. Nanogels are soft polymeric particles with an internally cross-linked structure, which behave as hydrogels and can be reversibly hydrated/dehydrated (swollen/shrunken) by the dispersing solvent and external stimuli. Their excellent properties, such as biocompatibility, colloidal stability, high water content, desirable mechanical properties, tunable chemical functionalities, and interior gel-like network for the incorporation of biomolecules, make them fascinating in the field of biological/biomedical applications. In this review, various approaches will be discussed and compared to the newly developed nanogel technology in terms of efficiency and applicability for determining their potential role in combating infections in the biomedical area including implant-associated infections.
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Affiliation(s)
| | | | | | - Lisa Tromp
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, W. J. Kolff Institute, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
| | - Jelmer Sjollema
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, W. J. Kolff Institute, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
| | - Patrick van Rijn
- University of Groningen, University Medical Center Groningen, Department of Biomedical Engineering, W. J. Kolff Institute, Antonius Deusinglaan 1, 9713 AV, Groningen, the Netherlands
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40
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Binuclear silver(I) complexes with the non-steroidal anti-inflammatory drug tolfenamic acid: Synthesis, characterization, cytotoxic activity and evaluation of cellular mechanism of action. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115189] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Srisang S, Boongird A, Ungsurungsie M, Wanasawas P, Nasongkla N. In vivo catheterization study of chlorhexidine-loaded nanoparticle coated Foley urinary catheters in male New Zealand white rabbits. J Biomed Mater Res B Appl Biomater 2021; 109:1836-1843. [PMID: 33856102 DOI: 10.1002/jbm.b.34844] [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] [Received: 12/05/2020] [Revised: 03/09/2021] [Accepted: 03/31/2021] [Indexed: 01/07/2023]
Abstract
Foley urinary catheters were coated with chlorhexidine-loaded nanoparticles (CHX-NPs), encapsulated in the form of micelles and nanospheres. Both of nanoparticles were deposited by multilayer nanocoating through dip and spray coating on the catheter surface both inner and outer surface. In our previous studies, the nanocoating of Foley urinary catheters was studied for chlorhexidine release, degradation, antibacterial evaluation, cytotoxicity assessment, hemocompatibility, skin irritation, skin sensitization, and stability during storage. The results demonstrated the antimicrobial functions and biocompatibility of the coated catheters. In this study, coated urinary catheters were inserted in the bladders of rabbits for 7 day to investigate their efficacy. Histopathology results showed no inflammation, redness, or swelling on bladder and urethra tissues. Surface morphology comparison of uncoated catheters in the control group and coated catheters in the treatment group revealed more encrustation and crystallization on uncoated catheter than on coated catheter, indicating that catheters coated with CHX-NPs showed efficacy in delaying encrustation and bacterial colonization. These findings suggest that nanocoating of urinary catheters can potentially enhance the biocompatibility of medical devices.
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Affiliation(s)
- Siriwan Srisang
- Department of Engineering, King Mongkut's Institute of Technology Ladkrabung, Chumphon, Thailand
| | - Atthaporn Boongird
- Department of Surgery, Neurosurgical Unit, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | | | - Pimpaka Wanasawas
- S&J International Enterprises Public Company Limited, Bangkok, Thailand
| | - Norased Nasongkla
- Department of Biomedical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom, Thailand
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Jablonská E, Horkavcová D, Rohanová D, Brauer DS. A review of in vitro cell culture testing methods for bioactive glasses and other biomaterials for hard tissue regeneration. J Mater Chem B 2021; 8:10941-10953. [PMID: 33169773 DOI: 10.1039/d0tb01493a] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bioactive glasses are used to regenerate bone by a mechanism which involves surface degradation, the release of ions such as calcium, soluble silica and phosphate and the precipitation of a biomimetic apatite surface layer on the glass. One major area of bioactive glass research is the incorporation of therapeutically active ions to broaden the application range of these materials. When developing such new compositions, in vitro cell culture studies are a key part of their characterisation. However, parameters of cell culture studies vary widely, and depending on the intended use of bioactive glass compositions, different layouts, cell types and assays need to be used. The aim of this publication is to provide materials scientists, particularly those new to cell culture studies, with a tool for selecting the most appropriate assays to give insight into the properties of interest.
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Affiliation(s)
- Eva Jablonská
- Laboratory of Molecular Biology and Virology, Department of Biochemistry and Microbiology, University of Chemistry and Technology, Technická 3, 166 28 Prague 6, Czech Republic.
| | - Diana Horkavcová
- Laboratory of Chemistry and Technology of Glasses, Department of Glass and Ceramics, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Dana Rohanová
- Laboratory of Chemistry and Technology of Glasses, Department of Glass and Ceramics, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Delia S Brauer
- Otto Schott Institute of Materials Research, Faculty of Chemistry and Earth Sciences, Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743 Jena, Germany.
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Culenova M, Birova I, Alexy P, Galfyova P, Nicodemou A, Moncmanova B, Plavec R, Tomanova K, Mencik P, Ziaran S, Danisovic L. In Vitro Characterization of Poly(Lactic Acid)/ Poly(Hydroxybutyrate)/ Thermoplastic Starch Blends for Tissue Engineering Application. Cell Transplant 2021; 30:9636897211021003. [PMID: 34053231 PMCID: PMC8182627 DOI: 10.1177/09636897211021003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/05/2021] [Accepted: 05/11/2021] [Indexed: 01/15/2023] Open
Abstract
Complex in vitro characterization of a blended material based on Poly(Lactic Acid), Poly(Hydroxybutyrate), and Thermoplastic Starch (PLA/PHB/TPS) was performed in order to evaluate its potential for application in the field of tissue engineering. We focused on the biological behavior of the material as well as its mechanical and morphological properties. We also focused on the potential of the blend to be processed by the 3D printer which would allow the fabrication of the custom-made scaffold. Several blends recipes were prepared and characterized. This material was then studied in the context of scaffold fabrication. Scaffold porosity, wettability, and cell-scaffold interaction were evaluated as well. MTT test and the direct contact cytotoxicity test were applied in order to evaluate the toxic potential of the blended material. Biocompatibility studies were performed on the human chondrocytes. According to our results, we assume that material had no toxic effect on the cell culture and therefore could be considered as biocompatible. Moreover, PLA/PHB/TPS blend is applicable for 3D printing. Printed scaffolds had highly porous morphology and were able to absorb water as well. In addition, cells could adhere and proliferate on the scaffold surface. We conclude that this blend has potential for scaffold engineering.
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Affiliation(s)
- Martina Culenova
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovak Republic
| | - Ivana Birova
- Institute of Natural and Synthetic Polymers, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
| | - Pavol Alexy
- Institute of Natural and Synthetic Polymers, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
| | - Paulina Galfyova
- Institute of Histology and Embryology, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovak Republic
| | - Andreas Nicodemou
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovak Republic
| | - Barbora Moncmanova
- Institute of Natural and Synthetic Polymers, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
| | - Roderik Plavec
- Institute of Natural and Synthetic Polymers, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
| | - Katarina Tomanova
- Institute of Natural and Synthetic Polymers, Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37 Bratislava, Slovak Republic
| | - Premysl Mencik
- Institute of Materials Science, Faculty of Chemistry, Brno University of Technology, 612 00 Brno, Czech Republic
| | - Stanislav Ziaran
- Department of Urology, Faculty of Medicine, Comenius University in Bratislava, 833 05 Bratislava, Slovak Republic
| | - Lubos Danisovic
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, 811 08 Bratislava, Slovak Republic
- Regenmed Ltd., 811 02 Bratislava, Slovak Republic
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Sun Q, Meng M, Steed JN, Sidow SJ, Bergeron BE, Niu LN, Ma JZ, Tay FR. Manoeuvrability and biocompatibility of endodontic tricalcium silicate-based putties. J Dent 2020; 104:103530. [PMID: 33220332 DOI: 10.1016/j.jdent.2020.103530] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES The present study evaluated the indentation depth, storage modulus and biocompatibility of an experimental endodontic putty designed for endodontic perforation repair and direct pulp-capping (NeoPutty). The results were compared with the properties associated with the commercially available EndoSequence BC RRM Putty (ES Putty). METHODS Indentation depth was measured by a profilometer following indentation with the 1/4 lb Gilmore needle. Elastic modulus was evaluated using a strain-controlled rheometer. The effects of eluents derived from these two putties were examined on the viability and proliferation of human dental pulp stem cells (hDPSCs) and human periodontal ligament fibroblasts (hPDLFs), before (1 st testing cycle) and after complete setting (2nd testing cycle). RESULTS The ES Putty became more difficult to ident and acquired a larger storage modulus after exposure to atmospheric moisture. Biocompatibility results indicated that both putties were relatively more cytotoxic than the bioinert Teflon negative control, but much less cytotoxic than the zinc oxide-eugenol cement negative control. NeoPutty was less cytotoxic than ES putty in the 1st testing cycle, particularly with hDPSCs. Both putties exhibited more favourable cytotoxicity profiles after complete setting. CONCLUSIONS NeoPutty has a better window of maneuverability after exposure to atmospheric moisture. From an in vitro cytotoxicity perspective, the NeoPutty may be considered more biocompatible than ES putty. CLINICAL SIGNIFICANCE The experimental NeoPutty is biocompatible and is capable of reducing the frustration of shortened shelf life when jar-stored endodontic putties are exposed to atmospheric moisture during repeated opening of the lid for clinical retrieval.
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Affiliation(s)
- Qin Sun
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Meng Meng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jeffrey N Steed
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Stephanie J Sidow
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Brian E Bergeron
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - Li-Na Niu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Jing-Zhi Ma
- Department of Stomatology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Franklin R Tay
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, USA.
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Cytotoxicity and UV Light Absorption in Biopolymeric Membranes from Native Vegetation of Mexico. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10144995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Sustainable processing from native vegetation such as agave, nopal and aloe, is mainly centered on the components of lignin, cellulose, and hemicellulose, defined generally as lignocellulosic. Cytotoxicity of lignocellulosic biopolymer membranes (LBMs) of mucilages of Opuntia ficus-indica, Aloe barbadensis Miller, fructans, and residual Agave tequilana Weber fibers at different concentrations (30, 50 and 70%), was evaluated in contact with human fibroblast cells (ATCC® PCS-201-010), cultured in vitro. Long and short LMBs were formed from the fibrous material. The interaction showed mild cytotoxicity according to ISO 10993-5: 2009. Cytotoxic activity demonstrated in the presence of fibroblasts implied a maximum cytotoxicity of close to 46% and a minimum of 7% in LBMs. UV light absorption results of the large fiber LMBs showed the highest prevention of passage of light, having a protective effect mechanism of delaying the response of hypersensitivity as a result of exposure to UV radiation. The morphology and structure were characterized using SEM, FT-IR, and image texture analysis. According to the LBMs reactivity measured, the feasible uses of these membranes can be suggested as materials for biomedical applications over a short period of time, with feasibility as a support to provide some beneficial solutions.
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Kang PL, Lin YH, Settu K, Yen CS, Yeh CY, Liu JT, Chen CJ, Chang SJ. A Facile Fabrication of Biodegradable and Biocompatible Cross-Linked Gelatin as Screen Printing Substrates. Polymers (Basel) 2020; 12:polym12051186. [PMID: 32456005 PMCID: PMC7284702 DOI: 10.3390/polym12051186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 01/06/2023] Open
Abstract
This study focuses on preparation and valuation of the biodegradable, native, and modified gelatin film as screen-printing substrates. Modified gelatin film was prepared by crosslinking with various crosslinking agents and the electrode array was designed by screen-printing. It was observed that the swelling ratio of C-2, crosslinked with glutaraldehyde and EDC/NHS (1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide) was found to be lower (3.98%) than that of C-1 (crosslinked with only glutaraldehyde) (8.77%) and C-0 (without crosslinking) (28.15%). The obtained results indicate that the swelling ratios of both C-1 and C-2 were found to be lower than that of C-0 (control one without crosslinking). The Young's modulus for C-1 and C-2 was found to be 8.55 ± 0.57 and 23.72 ± 2.04 kPa, respectively. Hence, it was conveyed that the mechanical strength of C-2 was found to be two times higher than that of C-l, suggesting that the mechanical strength was enhanced upon dual crosslinking in this study also. The adhesion study indicates that silver ink adhesion on the gelation surface is better than that of carbon ink. In addition, the electrical response of C-2 with a screen-printed electrode (SPE) was found to be the same as the commercial polycarbonate (PC) substrate. The result of MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay suggested that the silver SPE on C-2 was non-cytotoxic toward L929 fibroblast cells proliferation. The results indicated that C-2 gelatin is a promising material to act as a screen-printing substrate with excellent biodegradable and biocompatible properties.
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Affiliation(s)
- Pei-Leun Kang
- Cardiovascular Surgery, Department of Surgery, Kaohsiung Veterans General Hospital, Kaohsiung 81362, Taiwan; (P.-L.K.); (Y.-H.L.)
| | - Yu-Hsin Lin
- Cardiovascular Surgery, Department of Surgery, Kaohsiung Veterans General Hospital, Kaohsiung 81362, Taiwan; (P.-L.K.); (Y.-H.L.)
| | - Kalpana Settu
- Department of Electrical Engineering, National Taipei University, New Taipei 23741, Taiwan;
| | - Ching-Shu Yen
- Department of Biomedical Engineering, I-Shou University, Kaohsiung 82445, Taiwan; (C.-S.Y.); (C.-Y.Y.)
| | - Chin-Yi Yeh
- Department of Biomedical Engineering, I-Shou University, Kaohsiung 82445, Taiwan; (C.-S.Y.); (C.-Y.Y.)
| | - Jen-Tsai Liu
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (J.-T.L.); (C.-J.C.); (S.-J.C.); Tel.: +886-76151100-7467 (S.-J.C.)
| | - Ching-Jung Chen
- School of Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence: (J.-T.L.); (C.-J.C.); (S.-J.C.); Tel.: +886-76151100-7467 (S.-J.C.)
| | - Shwu-Jen Chang
- Department of Biomedical Engineering, I-Shou University, Kaohsiung 82445, Taiwan; (C.-S.Y.); (C.-Y.Y.)
- Correspondence: (J.-T.L.); (C.-J.C.); (S.-J.C.); Tel.: +886-76151100-7467 (S.-J.C.)
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How to select the appropriate method(s) of cytotoxicity analysis of mammalian cells at biointerfaces: A tutorial. Biointerphases 2020; 15:031201. [DOI: 10.1116/6.0000136] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Corazza FG, Ernesto JV, Nambu FA, de Carvalho LR, Leite-Silva VR, Varca GH, Calixto LA, Vieira DP, Andréo-Filho N, Lopes PS. Papain-cyclodextrin complexes as an intestinal permeation enhancer: Permeability and in vitro safety evaluation. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101413] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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García-Valdivia AA, Zabala-Lekuona A, Ramírez-Rodríguez GB, Delgado-López JM, Fernández B, Cepeda J, Rodríguez-Diéguez A. 2D-Coordination polymers based on 1H-indazole-4-carboxylic acid and transition metal ions: magnetic, luminescence and biological properties. CrystEngComm 2020. [DOI: 10.1039/d0ce00544d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five novel multifunctional coordination polymers (CPs) based on 1H-indazole-4-carboxylic acid are reported. These complexes, the first examples of CPs with this novel ligand, show interesting magnetic, luminescence and biological properties.
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Affiliation(s)
| | - Andoni Zabala-Lekuona
- Departamento de Química Aplicada
- Facultad de Química
- Universidad del País Vasco (UPV/EHU)
- Donostia-San Sebastián
- Spain
| | | | - José M. Delgado-López
- Departamento de Química Inorgánica
- Facultad de Ciencias
- Universidad de Granada
- 18071 Granada
- Spain
| | - Belén Fernández
- Institute of Parasitology and Biomedicine “López-Neyra”
- CSIC
- Granada
- Spain
| | - Javier Cepeda
- Departamento de Química Aplicada
- Facultad de Química
- Universidad del País Vasco (UPV/EHU)
- Donostia-San Sebastián
- Spain
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50
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Chatterjee S, Upadhyay P, Mishra M, M. S, Akshara MR, N. K, Zaidi ZS, Iqbal SF, Misra SK. Advances in chemistry and composition of soft materials for drug releasing contact lenses. RSC Adv 2020; 10:36751-36777. [PMID: 35517957 PMCID: PMC9057048 DOI: 10.1039/d0ra06681h] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 09/20/2020] [Indexed: 11/21/2022] Open
Abstract
Ocular drug delivery has always been a challenging feat to achieve in the field of medical sciences. One of the existing methods of non-invasive ocular drug delivery is the use of eye drops. However, drugs administered through these formulations have low bioavailability in the ocular system. This limitation can been overcome by using contact lenses as drug delivery vehicles. According to USA FDA definitions they can be categorized into two main categories-hard and soft contact lenses. Based on the material properties, hard contact lenses are mostly produced from polymers of acrylate monomers such as MMA (methyl methacrylate). These have the least water retention capacity, thereby, having minimal ability to diffuse oxygen into the corneal layer and are not ideal for long term use. Soft material contact lenses are flexible and are mainly hydrogel based. They have higher water retention capacities as compared to rigid contact lenses, which gives them the ability to transmit oxygen to the corneal layer. These hydrogel based soft materials are mainly produced from polymers of acrylate monomers such as HEMA (hydroxyethyl methacrylate) and found to be better for drug delivery contact lenses. These polymer-based soft materials have been efficiently modified in terms of their chemistry to achieve diverse physicochemical properties to produce efficient ocular drug delivery systems. However, complications such as drug leaching during storage and distribution, sterilisation, preservation of integrity of the lens and the possibility of surface roughness due to the incorporated drug molecules still need to be optimised. This review highlights the chemistries of various polymeric molecules through which physicochemical properties can be modified to achieve optimum drug loading and sustained release of the drug for application in the ocular system. Contact lens as controllable route for ocular drug delivery.![]()
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Affiliation(s)
- Subir Chatterjee
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Prashant Upadhyay
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Manjul Mishra
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Srividya M.
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - M. R. Akshara
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Kamali N.
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Zahra Sifat Zaidi
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Sayeda F. Iqbal
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
| | - Santosh K. Misra
- Department of Biological Sciences & Bioengineering
- Indian Institute of Technology Kanpur
- Kalyanpur
- India-208016
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