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Zuo Y, Lei L, Huang K, Zhang T, Hao Q, Zhao C, Liu H. Blending polymer outer membrane for continuous glucose monitoring with an extended lifetime. SENSORS AND ACTUATORS B: CHEMICAL 2024; 417:136142. [DOI: 10.1016/j.snb.2024.136142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
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Khan MUA, Aslam MA, Rahman RA, Abdullah MFB, Mehmood A, Stojanović GM. Current progress of protein-based dressing for wound healing applications - A review. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024:1-45. [PMID: 39018238 DOI: 10.1080/09205063.2024.2380570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Accepted: 06/24/2024] [Indexed: 07/19/2024]
Abstract
Protein-based wound dressings have garnered increasing interest in recent years owing to their distinct physical, chemical, and biological characteristics. The intricate molecular composition of proteins gives rise to unique characteristics, such as exceptional biocompatibility, biodegradability, and responsiveness, which contribute to the promotion of wound healing. Wound healing is an intricate and ongoing process influenced by multiple causes, and it consists of four distinct phases. Various treatments have been developed to repair different types of skin wounds, thanks to advancements in medical technology and the recognition of the diverse nature of wounds. This review has literature reviewed within the last 3-5 years-the recent progress and development of protein in wound dressings and the fundamental properties of an ideal wound dressing. Herein, the recent strides in protein-based state-of-the-art wound dressing emphasize the significant challenges and summarize future perspectives for wound healing applications.
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Affiliation(s)
- Muhammad Umar Aslam Khan
- Department of Mechanical and Industrial Engineering, Qatar University, Doha, Qatar
- Biomedical Research Center, Qatar University, Doha, Qatar
| | - Muhammad Azhar Aslam
- Department of Physics, University of Engineering and Technology, Lahore, Pakistan
| | - Roselinda Ab Rahman
- Oral and Maxillofacial Surgery Unit, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Mohd Faizal Bin Abdullah
- Oral and Maxillofacial Surgery Unit, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
- Oral and Maxillofacial Surgery Unit, Hospital Universiti Sains Malaysia, Universiti Sains Malaysia, Kubang Kerian, Malaysia
| | - Azra Mehmood
- National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Goran M Stojanović
- Department of Electronics, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia
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Mladenovic T, Zivic F, Petrovic N, Njezic S, Pavic J, Kotorcevic N, Milenkovic S, Grujovic N. Application of Silicone in Ophthalmology: A Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3454. [PMID: 39063747 PMCID: PMC11278226 DOI: 10.3390/ma17143454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 07/01/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024]
Abstract
This paper reviews the latest trends and applications of silicone in ophthalmology, especially related to intraocular lenses (IOLs). Silicone, or siloxane elastomer, as a synthetic polymer, has excellent biocompatibility, high chemical inertness, and hydrophobicity, enabling wide biomedical applications. The physicochemical properties of silicone are reviewed. A review of methods for mechanical and in vivo characterization of IOLs is presented as a prospective research area, since there are only a few available technologies, even though these properties are vital to ensure medical safety and suitability for clinical use, especially if long-term function is considered. IOLs represent permanent implants to replace the natural lens or for correcting vision, with the first commercial foldable lens made of silicone. Biological aspects of posterior capsular opacification have been reviewed, including the effects of the implanted silicone IOL. However, certain issues with silicone IOLs are still challenging and some conditions can prevent its application in all patients. The latest trends in nanotechnology solutions have been reviewed. Surface modifications of silicone IOLs are an efficient approach to further improve biocompatibility or to enable drug-eluting function. Different surface modifications, including coatings, can provide long-term treatments for various medical conditions or medical diagnoses through the incorporation of sensory functions. It is essential that IOL optical characteristics remain unchanged in case of drug incorporation and the application of nanoparticles can enable it. However, clinical trials related to these advanced technologies are still missing, thus preventing their clinical applications at this moment.
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Affiliation(s)
- Tamara Mladenovic
- Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia; (T.M.); (J.P.); (N.K.); (S.M.); (N.G.)
- Institute for Information Technologies Kragujevac, University of Kragujevac, Jovana Cvijica bb, 34000 Kragujevac, Serbia
| | - Fatima Zivic
- Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia; (T.M.); (J.P.); (N.K.); (S.M.); (N.G.)
| | - Nenad Petrovic
- Faculty of Medical Sciences, University of Kragujevac, Svetozara Markovica 69, 34000 Kragujevac, Serbia;
| | - Sasa Njezic
- Faculty of Medicine, University of Banja Luka, Save Mrkalja 14, 78000 Banja Luka, Bosnia and Herzegovina;
| | - Jelena Pavic
- Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia; (T.M.); (J.P.); (N.K.); (S.M.); (N.G.)
- Institute for Information Technologies Kragujevac, University of Kragujevac, Jovana Cvijica bb, 34000 Kragujevac, Serbia
| | - Nikola Kotorcevic
- Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia; (T.M.); (J.P.); (N.K.); (S.M.); (N.G.)
| | - Strahinja Milenkovic
- Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia; (T.M.); (J.P.); (N.K.); (S.M.); (N.G.)
| | - Nenad Grujovic
- Faculty of Engineering, University of Kragujevac, Sestre Janjic 6, 34000 Kragujevac, Serbia; (T.M.); (J.P.); (N.K.); (S.M.); (N.G.)
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Gradinariu AI, Racles C, Stoica I, Stelea CG, Simionescu AMA, Jehac AE, Costan VV. Silicones for Maxillofacial Prostheses and Their Modifications in Service. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3297. [PMID: 38998378 PMCID: PMC11243296 DOI: 10.3390/ma17133297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 06/28/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024]
Abstract
The biomedical applications of silicones are countless due to their outstanding properties. In dentistry, silicone for maxillofacial and plastic surgery has become indispensable, from both physiological and aesthetic points of view. In this mini-review, silicone materials for dentistry and facial prostheses are discussed, focusing on their properties and alterations when exposed for long periods to different environments. A significant number of studies reported in the literature have been conducted in vitro, mimicking some of the main degradative factors which have been identified as triggers for discoloration and deterioration of the mechanical properties. Among these, in artificial aging and accelerated natural aging studies, UV radiation is considered the most important. Other weathering factors, biological contamination, and disinfection agents may have dramatic effects as well. Several general properties of silicones are described at the beginning, with a focus on biocompatibility, cross-linking mechanisms, and applications in dentistry and maxillofacial prosthetics. We discuss the ongoing cross-linking and/or possible exudation after manufacturing, which also affects the stability of the prosthesis over time, and possibly the patient. Next, the main environmental factors that affect the prostheses in service are presented, including the role of cigarettes smoke, which has been discussed very little so far. A few aspects, such as biofilm formation, its negative effects, and proposed solutions to overcome this phenomenon regarding silicones, are also described. We conclude by proposing a set of topics for future research and development based on the gaps that have been identified in the literature. Although silicones are probably irreplaceable in maxillofacial prosthetics, improvements in terms of base materials, additives, surface treatments, and maintenance are possible and necessary for long-lasting and safer prostheses.
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Affiliation(s)
- Anca Irina Gradinariu
- Department of Oral and Maxillofacial Surgery, "Grigore T. Popa" University of Medicine and Pharmacy, 16 University Street, 700511 Iasi, Romania
| | - Carmen Racles
- Department of Inorganic Polymers, "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Iuliana Stoica
- Physical Chemistry of Polymers Department, "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Carmen Gabriela Stelea
- Department of Oral and Maxillofacial Surgery, "Grigore T. Popa" University of Medicine and Pharmacy, 16 University Street, 700511 Iasi, Romania
| | - Ana-Maria Andreea Simionescu
- Department of Oral and Maxillofacial Surgery, "Grigore T. Popa" University of Medicine and Pharmacy, 16 University Street, 700511 Iasi, Romania
| | - Alina Elena Jehac
- Department of Oral and Maxillofacial Surgery, "Grigore T. Popa" University of Medicine and Pharmacy, 16 University Street, 700511 Iasi, Romania
| | - Victor Vlad Costan
- Department of Oral and Maxillofacial Surgery, "Grigore T. Popa" University of Medicine and Pharmacy, 16 University Street, 700511 Iasi, Romania
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Raven SA, Montgomery NT, Chen AS, Nourmohammadi Z, Plott J, Shih A, Koppera P, Zopf DA. Effects of saline submersion at body temperature on airway supportive devices including a novel nasopharyngeal device produced using 3D-printing. Am J Otolaryngol 2024; 45:104366. [PMID: 38729016 DOI: 10.1016/j.amjoto.2024.104366] [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: 03/15/2024] [Accepted: 04/27/2024] [Indexed: 05/12/2024]
Abstract
PURPOSE This study investigated dimension changes of various nasopharyngeal airways, including a novel self-supporting device, after saline submersion at body temperature to simulate in-vivo use. Dimension changes over time may reduce efficacy during long-term use and require sizing adjustments or limits on duration of use. MATERIALS AND METHODS Cuffless Covidien endotracheal tubes, pediatric Rusch fixed flange polyvinyl chloride nasal airway tubes, pediatric Rusch Robertazzi style Mediprene nasal airway tubes, and novel silicone elastomer self-supporting nasopharyngeal airways were fully submerged in 0.9 % normal saline solution incubated at 37 degrees Celsius for 15 days. All devices had tube length and wall thickness measured after 0, 1, 2, 3, 4, 5, 10, and 15 days. The 95 % confidence intervals of tube dimensions at each date were compared with the 95 % confidence intervals at day 0. RESULTS The Covidien ET tube, Rusch PVC NPA, and ssNPA tube lengths and wall thicknesses did not change significantly over 15 days. The Rusch Mediprene NPAs had a statistically significant increase in length starting at day 1 and wall thickness at day 2. CONCLUSIONS The novel ssNPA did not expand in the in-vitro environment, supporting its safety for extended use. The PVC NPA and ET tube dimensions also remained stable. However, the Rusch Mediprene NPAs had significant length expansion after 1 day of submersion, indicating a considerable risk of expansion during extended use with potential implications for patient care. Silicone and PVC NPA dimensions remained stable when saturated, indicating these materials may be more appropriate for extended use.
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Affiliation(s)
- Sarah A Raven
- University of Michigan Medical School, Michigan Medicine, University of Michigan, 1301 Catherine Street, Ann Arbor, MI 49109, USA; Department of Otolaryngology - Head and Neck Surgery, Wayne State University, 5E UHC, 4201 St Antoine, Detroit, MI 48201, USA
| | - Nathan T Montgomery
- Department of Mechanical Engineering, College of Engineering, University of Michigan, 2350 Hayward Street, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, MI 48109, USA
| | - Alyssa S Chen
- University of Michigan Medical School, Michigan Medicine, University of Michigan, 1301 Catherine Street, Ann Arbor, MI 49109, USA; Otolaryngology - Head and Neck Surgery, Massachusetts Eye and Ear, Mass General Brigham, 243 Charles Street, Boston, MA 02114, USA; Harvard Medical School, 25 Shattuck Street, Boston, MA 02115, USA
| | - Zahra Nourmohammadi
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, MI 48109, USA
| | - Jeffrey Plott
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, MI 48109, USA
| | - Albert Shih
- Department of Mechanical Engineering, College of Engineering, University of Michigan, 2350 Hayward Street, Ann Arbor, MI 48109, USA; Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, MI 48109, USA
| | - Prabhat Koppera
- Department of Anesthesiology, Michigan Medicine, University of Michigan, 1540 E Hospital Drive, Ann Arbor, MI 48109, USA
| | - David A Zopf
- Department of Biomedical Engineering, College of Engineering, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, MI 48109, USA; Department of Otolaryngology - Head and Neck Surgery, Michigan Medicine, University of Michigan, 1540 E Hospital Drive, Ann Arbor, MI 48109, USA.
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Mishra T, Sengupta P, Basu S. Biomaterials for Targeting Endoplasmic Reticulum in Cancer. Chem Asian J 2024; 19:e202400250. [PMID: 38602248 DOI: 10.1002/asia.202400250] [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: 03/06/2024] [Revised: 04/08/2024] [Accepted: 04/11/2024] [Indexed: 04/12/2024]
Abstract
Endoplasmic reticulum (ER) is one of the most important sub-cellular organelles which controls myriads of biological functions including protein biosynthesis with proper functional folded form, protein misfolding, protein transport into Golgi body for secretion, Ca2+ homeostasis and so on. Subsequently, dysregulation in ER function leads to ER stress followed by disease pathology like cancer. Hence, targeting ER in the cancer cells emerged as one of the futuristic strategies for cancer treatment. However, the major challenge is to selectively and specifically target ER in the sub-cellular milieu in the cancer tissues, due to the lack of ER targeting chemical moieties to recognize the ER markers. To address this, in the last decade, numerous biomaterials were explored to selectively impair and image ER in cancer cells to induce ER stress. This review outlines those biomaterials which consists of carbon and silicon materials, lipid nanoparticles (liposomes and micelles), supramolecular self-assembled nanostructures, cell membrane-coated nanoparticles and metallic nanoparticles. Moreover, we also discuss the challenges and possible solutions of this promising field to usher the readers towards next-generation ER targeted cancer therapy.
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Affiliation(s)
- Tripti Mishra
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382355, India
| | - Poulomi Sengupta
- Department of Chemistry, Indrashil University, Rajpur, Kadi, Mehsana, Gujarat, 382740, India
| | - Sudipta Basu
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382355, India
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Moore JV, Burns J, McClelland N, Quinn J, McCoy CP. Understanding the properties of intermittent catheters to inform future development. Proc Inst Mech Eng H 2024; 238:713-727. [PMID: 37300485 DOI: 10.1177/09544119231178468] [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] [Indexed: 06/12/2023]
Abstract
Despite the extensive use of intermittent catheters (ICs) in healthcare, various issues persist for long-term IC users, such as pain, discomfort, infection, and tissue damage, including strictures, scarring and micro-abrasions. A lubricous IC surface is considered necessary to reduce patient pain and trauma, and therefore is a primary focus of IC development to improve patient comfort. While an important consideration, other factors should be routinely investigated to inform future IC development. An array of in vitro tests should be employed to assess IC's lubricity, biocompatibility and the risk of urinary tract infection development associated with their use. Herein, we highlight the importance of current in vitro characterisation techniques, the demand for optimisation and an unmet need to develop a universal 'toolkit' to assess IC properties.
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Affiliation(s)
- Jessica V Moore
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Jane Burns
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Nicola McClelland
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - James Quinn
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Colin P McCoy
- School of Pharmacy, Queen's University Belfast, Belfast, Northern Ireland, UK
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Generalova AN, Vikhrov AA, Prostyakova AI, Apresyan SV, Stepanov AG, Myasoedov MS, Oleinikov VA. Polymers in 3D printing of external maxillofacial prostheses and in their retention systems. Int J Pharm 2024; 657:124181. [PMID: 38697583 DOI: 10.1016/j.ijpharm.2024.124181] [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: 11/05/2023] [Revised: 04/12/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
Maxillofacial defects, arising from trauma, oncological disease or congenital abnormalities, detrimentally affect daily life. Prosthetic repair offers the aesthetic and functional reconstruction with the help of materials mimicking natural tissues. 3D polymer printing enables the design of patient-specific prostheses with high structural complexity, as well as rapid and low-cost fabrication on-demand. However, 3D printing for prosthetics is still in the early stage of development and faces various challenges for widespread use. This is because the most suitable polymers for maxillofacial restoration are soft materials that do not have the required printability, mechanical strength of the printed parts, as well as functionality. This review focuses on the challenges and opportunities of 3D printing techniques for production of polymer maxillofacial prostheses using computer-aided design and modeling software. Review discusses the widely used polymers, as well as their blends and composites, which meet the most important assessment criteria, such as the physicochemical, biological, aesthetic properties and processability in 3D printing. In addition, strategies for improving the polymer properties, such as their printability, mechanical strength, and their ability to print multimaterial and architectural structures are highlighted. The current state of the prosthetic retention system is presented with a focus on actively used polymer adhesives and the recently implemented prosthesis-supporting osseointegrated implants, with an emphasis on their creation from 3D-printed polymers. The successful prosthetics is discussed in terms of the specificity of polymer materials at the restoration site. The approaches and technological prospects are also explored through the examples of the nasal, auricle and ocular prostheses, ranging from prototypes to end-use products.
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Affiliation(s)
- Alla N Generalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia; Federal Scientific Research Center "Crystallography and Photonics" of the Russian Academy of Sciences, 119333 Moscow, Russia.
| | - Alexander A Vikhrov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
| | - Anna I Prostyakova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
| | - Samvel V Apresyan
- Institute of Digital Dentistry, Medical Institute, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
| | - Alexander G Stepanov
- Institute of Digital Dentistry, Medical Institute, Peoples' Friendship University of Russia (RUDN University), Miklukho-Maklaya 6, 117198 Moscow, Russia
| | - Maxim S Myasoedov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
| | - Vladimir A Oleinikov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
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Dallaev R. Advances in Materials with Self-Healing Properties: A Brief Review. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2464. [PMID: 38793530 PMCID: PMC11123491 DOI: 10.3390/ma17102464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/17/2024] [Accepted: 05/18/2024] [Indexed: 05/26/2024]
Abstract
The development of materials with self-healing capabilities has garnered considerable attention due to their potential to enhance the durability and longevity of various engineering and structural applications. In this review, we provide an overview of recent advances in materials with self-healing properties, encompassing polymers, ceramics, metals, and composites. We outline future research directions and potential applications of self-healing materials (SHMs) in diverse fields. This review aims to provide insights into the current state-of-the-art in SHM research and guide future efforts towards the development of innovative and sustainable materials with enhanced self-repair capabilities. Each material type showcases unique self-repair mechanisms tailored to address specific challenges. Furthermore, this review investigates crack healing processes, shedding light on the latest developments in this critical aspect of self-healing materials. Through an extensive exploration of these topics, this review aims to provide a comprehensive understanding of the current landscape and future directions in self-healing materials research.
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Affiliation(s)
- Rashid Dallaev
- Department of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 2848/8, 61600 Brno, Czech Republic
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Navarrete-Germán LE, Gómez-Lázaro B, López-Saucedo F, Bucio E. Antimicrobial Functionalization of Silicone-graft-poly( N-vinylimidazole) Catheters. Molecules 2024; 29:2225. [PMID: 38792087 PMCID: PMC11123943 DOI: 10.3390/molecules29102225] [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: 03/26/2024] [Revised: 05/05/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
In this work, we present the modification of a medical-grade silicone catheter with the N-vinylimidazole monomer using the grafting-from method at room temperature and induced by gamma rays. The catheters were modified by varying the monomer concentration (20-100 vol%) and the irradiation dose (20-100 kGy). Unlike the pristine material, the grafted poly(N-vinylimidazole) chains provided the catheter with hydrophilicity and pH response. This change allowed for the functionalization of the catheters to endow it with antimicrobial features. Thus, the quaternization of amines with iodomethane and bromoethane was performed, as well as the immobilization of silver and ampicillin. The inhibitory capacity of these materials, functionalized with antimicrobial agents, was challenged against Escherichia coli and Staphylococcus aureus strains, showing variable results, where loaded ampicillin was amply better at eliminating bacteria.
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Affiliation(s)
| | | | - Felipe López-Saucedo
- Departament of Radiation Chemistry and Radiochemistry, Institute of Nuclear Sciences, National Autonomous University of Mexico, Circuito Exterior s/n, Ciudad Universitaria, Mexico City C.P. 04510, Mexico; (L.E.N.-G.); (B.G.-L.)
| | - Emilio Bucio
- Departament of Radiation Chemistry and Radiochemistry, Institute of Nuclear Sciences, National Autonomous University of Mexico, Circuito Exterior s/n, Ciudad Universitaria, Mexico City C.P. 04510, Mexico; (L.E.N.-G.); (B.G.-L.)
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11
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Mohammadi M, Ahmed Qadir S, Mahmood Faraj A, Hamid Shareef O, Mahmoodi H, Mahmoudi F, Moradi S. Navigating the future: Microfluidics charting new routes in drug delivery. Int J Pharm 2024:124142. [PMID: 38648941 DOI: 10.1016/j.ijpharm.2024.124142] [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: 10/12/2023] [Revised: 03/30/2024] [Accepted: 04/18/2024] [Indexed: 04/25/2024]
Abstract
Microfluidics has emerged as a transformative force in the field of drug delivery, offering innovative avenues to produce a diverse range of nano drug delivery systems. Thanks to its precise manipulation of small fluid volumes and its exceptional command over the physicochemical characteristics of nanoparticles, this technology is notably able to enhance the pharmacokinetics of drugs. It has initiated a revolutionary phase in the domain of drug delivery, presenting a multitude of compelling advantages when it comes to developing nanocarriers tailored for the delivery of poorly soluble medications. These advantages represent a substantial departure from conventional drug delivery methodologies, marking a paradigm shift in pharmaceutical research and development. Furthermore, microfluidic platformsmay be strategically devised to facilitate targeted drug delivery with the objective of enhancing the localized bioavailability of pharmaceutical substances. In this paper, we have comprehensively investigated a range of significant microfluidic techniques used in the production of nanoscale drug delivery systems. This comprehensive review can serve as a valuable reference and offer insightful guidance for the development and optimization of numerous microfluidics-fabricated nanocarriers.
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Affiliation(s)
- Mohammad Mohammadi
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Syamand Ahmed Qadir
- Department of Medical Laboratory Techniques, Halabja Technical Institute, Research Center, Sulaimani Polytechnic University, Sulaymaniyah, Iraq
| | - Aryan Mahmood Faraj
- Department of Medical Laboratory Sciences, Halabja Technical College of Applied Sciences, Sulaimani Polytechnic University, Halabja, Iraq
| | - Osama Hamid Shareef
- Department of Medical Laboratory Techniques, Halabja Technical Institute, Research Center, Sulaimani Polytechnic University, Sulaymaniyah, Iraq
| | - Hassan Mahmoodi
- Department of Medical Laboratory Sciences, School of Paramedical Sciences, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Mahmoudi
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sajad Moradi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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12
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Malik S, Lavania A, Shukla D, Shah J, Raj S, Murugan SS, Sathya TN, Goswami A, Kumaravel TS. Evaluating CAPO®: A biocompatibility, transparency, and fitment assessment for use with CEREBO® in traumatic intracranial injury detection. JOURNAL OF BIOPHOTONICS 2024; 17:e202300243. [PMID: 38176408 DOI: 10.1002/jbio.202300243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/06/2024]
Abstract
Healthcare-associated infections (HAIs) are a global concern affecting millions of patients, requiring robust infection prevention and control measures. In particular, patients with traumatic brain injury (TBI) are highly susceptible to nosocomial infections, emphasizing the importance of infection control. Non-invasive near infrared spectroscopy (NIRS) device, CEREBO® integrated with a disposable component CAPO® has emerged as a valuable tool for TBI patient triage and this study evaluated the safety and efficacy of this combination. Biocompatibility tests confirmed safety and transparency assessments demonstrated excellent light transmission. Clinical evaluation with 598 enrollments demonstrated high accuracy of CEREBO® in detecting traumatic intracranial hemorrhage. During these evaluations, the cap fitted well and moved smoothly with the probes demonstrating appropriate flexibility. These findings support the efficacy of the CAPO® and CEREBO® combination, potentially improving infection control and enhancing intracranial hemorrhage detection for TBI patient triage. Ultimately, this can lead to better healthcare outcomes and reduced global HAIs.
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Affiliation(s)
- Shilpa Malik
- Bioscan Research Pvt. Ltd., Ahmedabad, Gujarat, India
| | | | - Dhaval Shukla
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India
| | - Jaimin Shah
- Department of Neurosurgery, Civil Hospital, Ahmedabad, India
| | - Sumit Raj
- Department of Neurosurgery, All India Institute of Medical Sciences, Bhopal, India
| | - S S Murugan
- GLR Laboratories Pvt. Ltd., Chennai, Tamil Nadu, India
| | - T N Sathya
- GLR Laboratories Pvt. Ltd., Chennai, Tamil Nadu, India
| | | | - T S Kumaravel
- GLR Laboratories (Europe) Pvt. Ltd., Sharnbrook, United Kingdom
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13
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Chen L, Zhang S, Duan Y, Song X, Chang M, Feng W, Chen Y. Silicon-containing nanomedicine and biomaterials: materials chemistry, multi-dimensional design, and biomedical application. Chem Soc Rev 2024; 53:1167-1315. [PMID: 38168612 DOI: 10.1039/d1cs01022k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
The invention of silica-based bioactive glass in the late 1960s has sparked significant interest in exploring a wide range of silicon-containing biomaterials from the macroscale to the nanoscale. Over the past few decades, these biomaterials have been extensively explored for their potential in diverse biomedical applications, considering their remarkable bioactivity, excellent biocompatibility, facile surface functionalization, controllable synthesis, etc. However, to expedite the clinical translation and the unexpected utilization of silicon-composed nanomedicine and biomaterials, it is highly desirable to achieve a thorough comprehension of their characteristics and biological effects from an overall perspective. In this review, we provide a comprehensive discussion on the state-of-the-art progress of silicon-composed biomaterials, including their classification, characteristics, fabrication methods, and versatile biomedical applications. Additionally, we highlight the multi-dimensional design of both pure and hybrid silicon-composed nanomedicine and biomaterials and their intrinsic biological effects and interactions with biological systems. Their extensive biomedical applications span from drug delivery and bioimaging to therapeutic interventions and regenerative medicine, showcasing the significance of their rational design and fabrication to meet specific requirements and optimize their theranostic performance. Additionally, we offer insights into the future prospects and potential challenges regarding silicon-composed nanomedicine and biomaterials. By shedding light on these exciting research advances, we aspire to foster further progress in the biomedical field and drive the development of innovative silicon-composed nanomedicine and biomaterials with transformative applications in biomedicine.
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Affiliation(s)
- Liang Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China.
| | - Shanshan Zhang
- Department of Ultrasound Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, P. R. China
| | - Yanqiu Duan
- Laboratory Center, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P. R. China.
| | - Xinran Song
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China.
| | - Meiqi Chang
- Laboratory Center, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, P. R. China.
| | - Wei Feng
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China.
| | - Yu Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China.
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14
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Iwasaki Y. Photoassisted Surface Modification with Zwitterionic Phosphorylcholine Polymers for the Fabrication of Ideal Biointerfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15417-15430. [PMID: 37899752 DOI: 10.1021/acs.langmuir.3c02696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Surface modification using zwitterionic 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers is commonly performed to fabricate interfaces that reduce nonspecific fouling by biomolecules and cells. Accordingly, several clinically used devices, such as guide wires, stents, oxygenators, left ventricular assist devices, and microcatheters have been modified using MPC polymers. The specific types of surface modifications vary across substrates and applications. Recently, photoreactions have garnered attention for surface modification due to their stability and tunability. This review highlights various studies that employed photoreactions to modify surfaces using MPC polymers, especially photoinduced graft polymerization of MPC. In addition to antifouling materials, several micromanipulated, long-lasting hydrophilic, and super antiwear surfaces are summarized. Furthermore, several photoreactive MPC polymers that can be used to control interactions between biomolecules and materials are presented along with their potential to form selective recognition surfaces that target biomolecules for biosensors and diagnostic devices.
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Affiliation(s)
- Yasuhiko Iwasaki
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
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15
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Kumara SPSNBS, Senevirathne SWMAI, Mathew A, Bray L, Mirkhalaf M, Yarlagadda PKDV. Progress in Nanostructured Mechano-Bactericidal Polymeric Surfaces for Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2799. [PMID: 37887949 PMCID: PMC10609396 DOI: 10.3390/nano13202799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023]
Abstract
Bacterial infections and antibiotic resistance remain significant contributors to morbidity and mortality worldwide. Despite recent advances in biomedical research, a substantial number of medical devices and implants continue to be plagued by bacterial colonisation, resulting in severe consequences, including fatalities. The development of nanostructured surfaces with mechano-bactericidal properties has emerged as a promising solution to this problem. These surfaces employ a mechanical rupturing mechanism to lyse bacterial cells, effectively halting subsequent biofilm formation on various materials and, ultimately, thwarting bacterial infections. This review delves into the prevailing research progress within the realm of nanostructured mechano-bactericidal polymeric surfaces. It also investigates the diverse fabrication methods for developing nanostructured polymeric surfaces with mechano-bactericidal properties. We then discuss the significant challenges associated with each approach and identify research gaps that warrant exploration in future studies, emphasizing the potential for polymeric implants to leverage their distinct physical, chemical, and mechanical properties over traditional materials like metals.
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Affiliation(s)
- S. P. S. N. Buddhika Sampath Kumara
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (S.P.S.N.B.S.K.); (S.W.M.A.I.S.); (A.M.); (L.B.)
- Australian Research Council Training Centre for Multiscale 3D Imaging, Modelling, and Manufacturing, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
| | - S. W. M. Amal Ishantha Senevirathne
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (S.P.S.N.B.S.K.); (S.W.M.A.I.S.); (A.M.); (L.B.)
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
| | - Asha Mathew
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (S.P.S.N.B.S.K.); (S.W.M.A.I.S.); (A.M.); (L.B.)
- School of Engineering, University of Southern Queensland, Springfield, QLD 4300, Australia
| | - Laura Bray
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (S.P.S.N.B.S.K.); (S.W.M.A.I.S.); (A.M.); (L.B.)
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
| | - Mohammad Mirkhalaf
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (S.P.S.N.B.S.K.); (S.W.M.A.I.S.); (A.M.); (L.B.)
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Centre for Materials Science, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
| | - Prasad K. D. V. Yarlagadda
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia; (S.P.S.N.B.S.K.); (S.W.M.A.I.S.); (A.M.); (L.B.)
- Australian Research Council Training Centre for Multiscale 3D Imaging, Modelling, and Manufacturing, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia
- School of Engineering, University of Southern Queensland, Springfield, QLD 4300, Australia
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16
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Daradmare S, Son H, Lee CS. Fabrication and Morphological Control of Nonspherical Alginate Hydrogel Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13876-13889. [PMID: 37725665 DOI: 10.1021/acs.langmuir.3c01404] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
We report a simple platform for the fabrication of nonspherical alginate hydrogel particles using a dripping method. Hydrogel particles with novel morphologies, such as vortex ring, teardrop, disk, sphere, and mushroom, are fabricated by controlling various parameters. We monitored the deformation process of the hydrogel particles after they penetrated the crosslinking solution using a high-speed camera. Then, we proposed a mechanism showing a unique morphological transformation from a spherical to a disk shape. We demonstrated how controlling the collecting height that causes the drop impact force against the crosslinking solution surface was critical to producing hydrogel particles with these intriguing shapes. In particular, disk-shaped alginate particles show their ability as potential platforms for culturing mouse adrenocortical tumor cells (Y1) and a hippocampal neuronal cell (HT-22). To modify alginate particles, cell-adhesive gelatin is incorporated into the alginate matrix and then alginate particles are coated with poly(allylamine hydrochloride). Two modified alginate particles show good adhesion and proliferation rates on their surfaces. In particular, the hybrid hydrogel particles provide great potential to be developed into promising materials for cell culture, drug delivery, and tissue engineering.
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Affiliation(s)
- Sneha Daradmare
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Huiseong Son
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Chang-Soo Lee
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
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17
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Maione A, Buonanno A, Galdiero M, de Alteriis E, Petrillo F, Reibaldi M, Guida M, Galdiero E. A Re-Purposing Strategy: Sub-Lethal Concentrations of an Eicosanoid Derived from the Omega-3-Polyunsaturated Fatty Acid Resolvin D1 Affect Dual Species Biofilms. Int J Mol Sci 2023; 24:12876. [PMID: 37629056 PMCID: PMC10454369 DOI: 10.3390/ijms241612876] [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: 07/24/2023] [Revised: 08/14/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
The fungal species Candida parapsilosis and the bacterial species Staphylococcus aureus may be responsible for hospital-acquired infections in patients undergoing invasive medical interventions or surgical procedures and often coinfect critically ill patients in complicating polymicrobial biofilms. The efficacy of the re-purposing therapy has recently been reported as an alternative to be used. PUFAs (polyunsaturated fatty acids) may be used alone or in combination with currently available traditional antimicrobials to prevent and manage various infections overcoming antimicrobial resistance. The objectives of the study were to evaluate the effects of Resolvin D1 (RvD1) as an antimicrobial on S. aureus and C. parapsilosis, as well as the activity against the mixed biofilm of the same two species. Microdilution assays and time-kill growth curves revealed bacterial and fungal inhibition at minimum concentration values between 5 and 10 μg mL-1. In single-species structures, an inhibition of 55% and 42% was reported for S. aureus and C. parapsilosis, respectively. Moreover, RvD1 demonstrated an eradication capacity of 60% and 80% for single- and mixed-species biofilms, respectively. In association with the inhibition activity, a downregulation of genes involved in biofilm formation as well as ROS accumulation was observed. Eradication capability was confirmed also on mature mixed biofilm grown on silicone platelets as shown by scanning electron microscopy (SEM). In conclusion, RvD1 was efficient against mono and polymicrobial biofilms in vitro, being a promising alternative for the treatment of mixed bacterial/fungal infections.
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Affiliation(s)
- Angela Maione
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (A.M.); (A.B.); (E.d.A.); (M.G.)
| | - Annalisa Buonanno
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (A.M.); (A.B.); (E.d.A.); (M.G.)
| | - Marilena Galdiero
- Department of Experimental Medicine, University of Campania “Luigi Vanvitelli”, 81100 Naples, Italy;
| | - Elisabetta de Alteriis
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (A.M.); (A.B.); (E.d.A.); (M.G.)
| | - Francesco Petrillo
- Department of Medical Sciences, Eye Clinic, Turin University, 10126 Turin, Italy; (F.P.); (M.R.)
| | - Michele Reibaldi
- Department of Medical Sciences, Eye Clinic, Turin University, 10126 Turin, Italy; (F.P.); (M.R.)
| | - Marco Guida
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (A.M.); (A.B.); (E.d.A.); (M.G.)
- National Biodiversity Future Center (NBFC), 90133 Palermo, Italy
- Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), 80055 Portici, Italy
| | - Emilia Galdiero
- Department of Biology, University of Naples ‘Federico II’, Via Cinthia, 80126 Naples, Italy; (A.M.); (A.B.); (E.d.A.); (M.G.)
- Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), 80055 Portici, Italy
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18
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Li P, Yin R, Cheng J, Lin J. Bacterial Biofilm Formation on Biomaterials and Approaches to Its Treatment and Prevention. Int J Mol Sci 2023; 24:11680. [PMID: 37511440 PMCID: PMC10380251 DOI: 10.3390/ijms241411680] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/13/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Bacterial biofilms can cause widespread infection. In addition to causing urinary tract infections and pulmonary infections in patients with cystic fibrosis, biofilms can help microorganisms adhere to the surfaces of various medical devices, causing biofilm-associated infections on the surfaces of biomaterials such as venous ducts, joint prostheses, mechanical heart valves, and catheters. Biofilms provide a protective barrier for bacteria and provide resistance to antimicrobial agents, which increases the morbidity and mortality of patients. This review summarizes biofilm formation processes and resistance mechanisms, as well as the main features of clinically persistent infections caused by biofilms. Considering the various infections caused by clinical medical devices, we introduce two main methods to prevent and treat biomaterial-related biofilm infection: antibacterial coatings and the surface modification of biomaterials. Antibacterial coatings depend on the covalent immobilization of antimicrobial agents on the coating surface and drug release to prevent and combat infection, while the surface modification of biomaterials affects the adhesion behavior of cells on the surfaces of implants and the subsequent biofilm formation process by altering the physical and chemical properties of the implant material surface. The advantages of each strategy in terms of their antibacterial effect, biocompatibility, limitations, and application prospects are analyzed, providing ideas and research directions for the development of novel biofilm infection strategies related to therapeutic materials.
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Affiliation(s)
| | | | | | - Jinshui Lin
- Shaanxi Key Laboratory of Chinese Jujube, College of Life Sciences, Yan’an University, Yan’an 716000, China; (P.L.); (R.Y.); (J.C.)
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19
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Maloney SE, Grayton QE, Wai C, Uriyanghai U, Sidhu J, Roy-Chaudhury P, Schoenfisch MH. Nitric Oxide-Releasing Hemodialysis Catheter Lock Solutions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:28907-28921. [PMID: 37285144 DOI: 10.1021/acsami.3c02506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In an attempt to address the significant morbidity, mortality, and economic cost associated with tunneled dialysis catheter (TDC) dysfunction, we report the development of nitric oxide-releasing dialysis catheter lock solutions. Catheter lock solutions with a range of NO payloads and release kinetics were prepared using low-molecular-weight N-diazeniumdiolate nitric oxide donors. Nitric oxide released through the catheter surface as a dissolved gas was maintained at therapeutically relevant levels for at least 72 h, supporting clinical translatability (interdialytic period). Slow, sustained NO release from the catheter surface prevented bacterial adhesion in vitro by 88.9 and 99.7% for Pseudomonas aeruginosa and Staphylococcus epidermidis, respectively, outperforming a burst NO-release profile. Furthermore, bacteria adhered to the catheter surface in vitro prior to lock solution use was reduced by 98.7 and 99.2% for P. aeruginosa and S. epidermidis, respectively, when using a slow releasing NO donor, demonstrating both preventative and treatment potential. The adhesion of proteins to the catheter surface, a process often preceding biofilm formation and thrombosis, was also lessened by 60-65% by sustained NO release. In vitro cytotoxicity of catheter extract solutions to mammalian cells was minimal, supporting the non-toxic nature of the NO-releasing lock solutions. The use of the NO-releasing lock solution in an in vivo TDC porcine model demonstrated decreased infection and thrombosis, enhanced catheter functionality, and improved outcome (i.e., likelihood of survival) as a result of catheter use.
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Affiliation(s)
- Sara E Maloney
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Quincy E Grayton
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Christine Wai
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Unimunkh Uriyanghai
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Jasleen Sidhu
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Prabir Roy-Chaudhury
- UNC Kidney Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Mark H Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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20
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Filippova OV, Maksimkin AV, Dayyoub T, Larionov DI, Telyshev DV. Sustainable Elastomers for Actuators: "Green" Synthetic Approaches and Material Properties. Polymers (Basel) 2023; 15:2755. [PMID: 37376401 DOI: 10.3390/polym15122755] [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: 05/30/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Elastomeric materials have great application potential in actuator design and soft robot development. The most common elastomers used for these purposes are polyurethanes, silicones, and acrylic elastomers due to their outstanding physical, mechanical, and electrical properties. Currently, these types of polymers are produced by traditional synthetic methods, which may be harmful to the environment and hazardous to human health. The development of new synthetic routes using green chemistry principles is an important step to reduce the ecological footprint and create more sustainable biocompatible materials. Another promising trend is the synthesis of other types of elastomers from renewable bioresources, such as terpenes, lignin, chitin, various bio-oils, etc. The aim of this review is to address existing approaches to the synthesis of elastomers using "green" chemistry methods, compare the properties of sustainable elastomers with the properties of materials produced by traditional methods, and analyze the feasibility of said sustainable elastomers for the development of actuators. Finally, the advantages and challenges of existing "green" methods of elastomer synthesis will be summarized, along with an estimation of future development prospects.
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Affiliation(s)
- Olga V Filippova
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
| | - Aleksey V Maksimkin
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
| | - Tarek Dayyoub
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
- Department of Physical Chemistry, National University of Science and Technology "MISIS", 119049 Moscow, Russia
| | - Dmitry I Larionov
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
| | - Dmitry V Telyshev
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
- Institute of Biomedical Systems, National Research University of Electronic Technology, Zelenograd, 124498 Moscow, Russia
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21
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Ahmed W, Al-Marzouqi AH, Nazir MH, Rizvi TA, Zaneldin E, Khan M, Aziz M. Investigating the Properties and Characterization of a Hybrid 3D Printed Antimicrobial Composite Material Using FFF Process: Innovative and Swift. Int J Mol Sci 2023; 24:ijms24108895. [PMID: 37240240 DOI: 10.3390/ijms24108895] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Novel strategies and materials have gained the attention of researchers due to the current pandemic, the global market high competition, and the resistance of pathogens against conventional materials. There is a dire need to develop cost-effective, environmentally friendly, and biodegradable materials to fight against bacteria using novel approaches and composites. Fused filament fabrication (FFF), also known as fused deposition modeling (FDM), is the most effective and novel fabrication method to develop these composites due to its various advantages. Compared to metallic particles alone, composites of different metallic particles have shown excellent antimicrobial properties against common Gram-positive and Gram-negative bacteria. This study investigates the antimicrobial properties of two sets of hybrid composite materials, i.e., Cu-PLA-SS and Cu-PLA-Al, are made using copper-enriched polylactide composite, one-time printed side by-side with stainless steel/PLA composite, and second-time with aluminum/PLA composite respectively. These materials have 90 wt.% of copper, 85 wt.% of SS 17-4, 65 wt.% of Al with a density of 4.7 g/cc, 3.0 g/cc, and 1.54 g/cc, respectively, and were fabricated side by side using the fused filament fabrication (FFF) printing technique. The prepared materials were tested against Gram-positive and Gram-negative bacteria such as Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Pseudomonas aeruginosa (P. aeruginosa), Salmonella Poona (S. Poona), and Enterococci during different time intervals (5 min, 10 min, 20 min, 1 h, 8 h, and 24 h). The results revealed that both samples showed excellent antimicrobial efficiency, and 99% reduction was observed after 10 min. Hence, three-dimensional (3D) printed polymeric composites enriched with metallic particles can be utilized for biomedical, food packaging, and tissue engineering applications. These composite materials can also provide sustainable solutions in public places and hospitals where the chances of touching surfaces are higher.
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Affiliation(s)
- Waleed Ahmed
- Engineering Requirements Unit, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Ali H Al-Marzouqi
- Department of Chemical and Petroleum Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Muhammad Hamza Nazir
- Department of Chemical and Petroleum Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Tahir A Rizvi
- Department of Microbiology & Immunology, College of Medicine & Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Essam Zaneldin
- Department of Civil and Environmental Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Mushtaq Khan
- Department of Microbiology & Immunology, College of Medicine & Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Muthanna Aziz
- Department of Mechanical Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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22
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Zhang J, Zeng Z, Chen Y, Deng L, Zhang Y, Que Y, Jiao Y, Chang J, Dong Z, Yang C. 3D-printed GelMA/CaSiO 3 composite hydrogel scaffold for vascularized adipose tissue restoration. Regen Biomater 2023; 10:rbad049. [PMID: 37274616 PMCID: PMC10234763 DOI: 10.1093/rb/rbad049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/24/2023] [Accepted: 04/23/2023] [Indexed: 06/06/2023] Open
Abstract
The increased number of mastectomies, combined with rising patient expectations for cosmetic and psychosocial outcomes, has necessitated the use of adipose tissue restoration techniques. However, the therapeutic effect of current clinical strategies is not satisfying due to the high demand of personalized customization and the timely vascularization in the process of adipose regeneration. Here, a composite hydrogel scaffold was prepared by three-dimensional (3D) printing technology, applying gelatin methacrylate anhydride (GelMA) as printing ink and calcium silicate (CS) bioceramic as an active ingredient for breast adipose tissue regeneration. The in vitro experiments showed that the composite hydrogel scaffolds could not only be customized with controllable architectures, but also significantly stimulated both 3T3-L1 preadipocytes and human umbilical vein endothelial cells in multiple cell behaviors, including cell adhesion, proliferation, migration and differentiation. Moreover, the composite scaffold promoted vascularized adipose tissue restoration under the skin of nude mice in vivo. These findings suggest that 3D-printed GelMA/CS composite scaffolds might be a good candidate for adipose tissue engineering.
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Affiliation(s)
| | | | - Yanxin Chen
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Li Deng
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Yanxin Zhang
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Yumei Que
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Yiren Jiao
- Joint Centre of Translational Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Jiang Chang
- Correspondence address. E-mail: (J.C.); (Z.D.); (C.Y.)
| | - Zhihong Dong
- Correspondence address. E-mail: (J.C.); (Z.D.); (C.Y.)
| | - Chen Yang
- Correspondence address. E-mail: (J.C.); (Z.D.); (C.Y.)
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23
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Li Y, Lozano MV, Peña D, Gulati IK, Jiang L. SmartLact8: A Bio-Inspired Robotic Breast Pump for Customized and Comfort Milk Expression. Biomimetics (Basel) 2023; 8:biomimetics8020190. [PMID: 37218776 DOI: 10.3390/biomimetics8020190] [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: 02/28/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 05/24/2023] Open
Abstract
According to the 2018 National Immunization Survey conducted by the Center for Disease Control and Prevention (CDC), 83.9% of the breastfeeding mothers in the United States have used a breast pump at least once. However, the majority of existing products use a vacuum-only mechanism to extract milk. This causes common breast injuries such as nipple soreness, breast-tissue damage, and lactation complications after pumping. The objective of this work was to develop a bio-inspired breast pump prototype, named as SmartLac8, that can mimic infant suckling patterns. The input vacuum pressure pattern and compression forces are inspired from term infants' natural oral suckling dynamics captured in prior clinical experiments. Open-loop input-output data are used to perform system identification for two different pumping stages that facilitates controller design for closed-loop stability and control. A physical breast pump prototype with soft pneumatic actuators and custom piezoelectric sensors was successfully developed, calibrated, and tested in dry lab experiments. Compression and vacuum pressure dynamics were successfully coordinated to mimic the infant's feeding mechanism. Experimental data on sucking frequency and pressure on the breast phantom were consistent with clinical findings.
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Affiliation(s)
- Yuying Li
- Department of Mechanical Engineering, San José State University, San Jose, CA 95192, USA
| | | | - David Peña
- Department of Mechanical Engineering, San José State University, San Jose, CA 95192, USA
| | - Ish Kumar Gulati
- College of Engineering, San José State University, San Jose, CA 95192, USA
| | - Lin Jiang
- Department of Mechanical Engineering, San José State University, San Jose, CA 95192, USA
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24
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Arif ZU, Khalid MY, Noroozi R, Hossain M, Shi HH, Tariq A, Ramakrishna S, Umer R. Additive manufacturing of sustainable biomaterials for biomedical applications. Asian J Pharm Sci 2023; 18:100812. [PMID: 37274921 PMCID: PMC10238852 DOI: 10.1016/j.ajps.2023.100812] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/26/2023] [Accepted: 03/30/2023] [Indexed: 06/07/2023] Open
Abstract
Biopolymers are promising environmentally benign materials applicable in multifarious applications. They are especially favorable in implantable biomedical devices thanks to their excellent unique properties, including bioactivity, renewability, bioresorbability, biocompatibility, biodegradability and hydrophilicity. Additive manufacturing (AM) is a flexible and intricate manufacturing technology, which is widely used to fabricate biopolymer-based customized products and structures for advanced healthcare systems. Three-dimensional (3D) printing of these sustainable materials is applied in functional clinical settings including wound dressing, drug delivery systems, medical implants and tissue engineering. The present review highlights recent advancements in different types of biopolymers, such as proteins and polysaccharides, which are employed to develop different biomedical products by using extrusion, vat polymerization, laser and inkjet 3D printing techniques in addition to normal bioprinting and four-dimensional (4D) bioprinting techniques. This review also incorporates the influence of nanoparticles on the biological and mechanical performances of 3D-printed tissue scaffolds. This work also addresses current challenges as well as future developments of environmentally friendly polymeric materials manufactured through the AM techniques. Ideally, there is a need for more focused research on the adequate blending of these biodegradable biopolymers for achieving useful results in targeted biomedical areas. We envision that biopolymer-based 3D-printed composites have the potential to revolutionize the biomedical sector in the near future.
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Affiliation(s)
- Zia Ullah Arif
- Department of Mechanical Engineering, University of Management & Technology Lahore, Sialkot Campus 51041, Pakistan
| | - Muhammad Yasir Khalid
- Department of Aerospace Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
| | - Reza Noroozi
- School of Mechanical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran
| | - Mokarram Hossain
- Zienkiewicz Centre for Computational Engineering (ZCCE), Faculty of Science and Engineering, Swansea University, Swansea SA1 8EN, UK
| | - HaoTian Harvey Shi
- Department of Mechanical & Materials Engineering, Western University, Ontario N6A 3K7, Canada
| | - Ali Tariq
- Department of Mechanical Engineering, University of Management & Technology Lahore, Sialkot Campus 51041, Pakistan
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, 119260, Singapore
| | - Rehan Umer
- Department of Aerospace Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, United Arab Emirates
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25
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Valls-Esteve A, Tejo-Otero A, Lustig-Gainza P, Buj-Corral I, Fenollosa-Artés F, Rubio-Palau J, Barber-Martinez de la Torre I, Munuera J, Fondevila C, Krauel L. Patient-Specific 3D Printed Soft Models for Liver Surgical Planning and Hands-On Training. Gels 2023; 9:gels9040339. [PMID: 37102951 PMCID: PMC10138006 DOI: 10.3390/gels9040339] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/06/2023] [Accepted: 04/11/2023] [Indexed: 04/28/2023] Open
Abstract
Background: Pre-surgical simulation-based training with three-dimensional (3D) models has been intensively developed in complex surgeries in recent years. This is also the case in liver surgery, although with fewer reported examples. The simulation-based training with 3D models represents an alternative to current surgical simulation methods based on animal or ex vivo models or virtual reality (VR), showing reported advantages, which makes the development of realistic 3D-printed models an option. This work presents an innovative, low-cost approach for producing patient-specific 3D anatomical models for hands-on simulation and training. Methods: The article reports three paediatric cases presenting complex liver tumours that were transferred to a major paediatric referral centre for treatment: hepatoblastoma, hepatic hamartoma and biliary tract rhabdomyosarcoma. The complete process of the additively manufactured liver tumour simulators is described, and the different steps for the correct development of each case are explained: (1) medical image acquisition; (2) segmentation; (3) 3D printing; (4) quality control/validation; and (5) cost. A digital workflow for liver cancer surgical planning is proposed. Results: Three hepatic surgeries were planned, with 3D simulators built using 3D printing and silicone moulding techniques. The 3D physical models showed highly accurate replications of the actual condition. Additionally, they proved to be more cost-effective in comparison with other models. Conclusions: It is demonstrated that it is possible to manufacture accurate and cost-effective 3D-printed soft surgical planning simulators for treating liver cancer. The 3D models allowed for proper pre-surgical planning and simulation training in the three cases reported, making it a valuable aid for surgeons.
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Affiliation(s)
- Arnau Valls-Esteve
- Innovation Department, Hospital Sant Joan de Déu, Universitat de Barcelona, Santa Rosa 39-57, 08950 Esplugues de Llobregat, Spain
- Medicina i Recerca Translacional, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Carrer de Casanova, 143, 08036 Barcelona, Spain
- 3D Unit (3D4H), Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
| | - Aitor Tejo-Otero
- Centre CIM, Universitat Politècnica de Catalunya (CIM UPC), Carrer de Llorens i Artigas, 12, 08028 Barcelona, Spain
| | - Pamela Lustig-Gainza
- Centre CIM, Universitat Politècnica de Catalunya (CIM UPC), Carrer de Llorens i Artigas, 12, 08028 Barcelona, Spain
| | - Irene Buj-Corral
- Department of Mechanical Engineering, Barcelona School of Industrial Engineering (ETSEIB), Universitat Politècnica de Catalunya, Av. Diagonal, 647, 08028 Barcelona, Spain
| | - Felip Fenollosa-Artés
- Centre CIM, Universitat Politècnica de Catalunya (CIM UPC), Carrer de Llorens i Artigas, 12, 08028 Barcelona, Spain
- Department of Mechanical Engineering, Barcelona School of Industrial Engineering (ETSEIB), Universitat Politècnica de Catalunya, Av. Diagonal, 647, 08028 Barcelona, Spain
| | - Josep Rubio-Palau
- Medicina i Recerca Translacional, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Carrer de Casanova, 143, 08036 Barcelona, Spain
- 3D Unit (3D4H), Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
- Pediatric Surgical Oncology Unit, Pediatric Surgery Department, Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
- Maxillofacial Unit, Department of Pediatric Surgery, Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
| | | | - Josep Munuera
- Medicina i Recerca Translacional, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Carrer de Casanova, 143, 08036 Barcelona, Spain
- 3D Unit (3D4H), Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
- Department of Diagnostic Imaging, Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
| | - Constantino Fondevila
- Hepatopancreatobiliary Surgery and Transplantation, General and Digestive Surgery, Metabolic and Digestive Diseases Institute (ICMDM), Hospital Clínic, CIBERehd, IDIBAPS, University of Barcelona, 08950 Esplugues de Llobregat, Spain
| | - Lucas Krauel
- Medicina i Recerca Translacional, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Carrer de Casanova, 143, 08036 Barcelona, Spain
- 3D Unit (3D4H), Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
- Pediatric Surgical Oncology Unit, Pediatric Surgery Department, Hospital Sant Joan de Déu, Universitat de Barcelona, 08950 Esplugues de Llobregat, Spain
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26
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Stepulane A, Ahlgren K, Rodriguez-Palomo A, Rajasekharan AK, Andersson M. Lyotropic liquid crystal elastomers for drug delivery. Colloids Surf B Biointerfaces 2023; 226:113304. [PMID: 37062225 DOI: 10.1016/j.colsurfb.2023.113304] [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: 12/13/2022] [Revised: 03/30/2023] [Accepted: 04/08/2023] [Indexed: 04/18/2023]
Abstract
Silicone elastomers like polydimethylsiloxane (PDMS) possess a combination of attractive material and biological properties motivating their widespread use in biomedical applications. Development of elastomers with capacity to deliver active therapeutic substances in the form of drugs is of particular interest to produce medical devices with added functionality. In this work, silicone-based lyotropic liquid crystal elastomers with drug-eluting functionality were developed using PDMS and triblock copolymer (diacrylated Pluronic F127, DA-F127). Various ternary PDMS-DA-F127-H2O compositions were explored and evaluated. Three compositions were found to have specific properties of interest and were further investigated for their nanostructure, mechanical properties, water retention capacity, and morphology. The ability of the elastomers to encapsulate and release polar and nonpolar substances was demonstrated using vancomycin and ibuprofen as model drugs. It was shown that the materials could deliver both types of drugs with a sustained release profile for up to 6 and 5 days for vancomycin and ibuprofen, respectively. This works demonstrates a lyotropic liquid crystal, silicone-based elastomer with tailorable mechanical properties, water retention capacity and ability to host and release polar and nonpolar active substances.
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Affiliation(s)
- Annija Stepulane
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg SE-412 96, Sweden; Amferia AB, Astra Zeneca BioVentureHub c/o Astra Zeneca, Pepparedsleden 1, Mölndal SE-431 83, Sweden
| | - Kajsa Ahlgren
- Department of Physics, Chalmers University of Technology, Gothenburg SE-412 96, Sweden
| | | | - Anand Kumar Rajasekharan
- Amferia AB, Astra Zeneca BioVentureHub c/o Astra Zeneca, Pepparedsleden 1, Mölndal SE-431 83, Sweden
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg SE-412 96, Sweden; Amferia AB, Astra Zeneca BioVentureHub c/o Astra Zeneca, Pepparedsleden 1, Mölndal SE-431 83, Sweden.
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27
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Marmo AC, Grunlan MA. Biomedical Silicones: Leveraging Additive Strategies to Propel Modern Utility. ACS Macro Lett 2023; 12:172-182. [PMID: 36669481 PMCID: PMC10848296 DOI: 10.1021/acsmacrolett.2c00701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/18/2023] [Indexed: 01/21/2023]
Abstract
Silicones have a long history of use in biomedical devices, with unique properties stemming from the siloxane (Si-O-Si) backbone that feature a high degree of flexibility and chemical stability. However, surface, rheological, mechanical, and electrical properties of silicones can limit their utility. Successful modification of silicones to address these limitations could lead to superior and new biomedical devices. Toward improving such properties, recent additive strategies have been leveraged to modify biomedical silicones and are highlighted herein.
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Affiliation(s)
- Alec C. Marmo
- Department
of Materials Science and Engineering Texas
A&M University, College
Station, Texas 77843-3003, United States
| | - Melissa A. Grunlan
- Department
of Biomedical Engineering, Department of Materials Science and Engineering,
Department of Chemistry Texas A&M University, College Station, Texas 77843-3003, United
States
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28
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Rezvova MA, Klyshnikov KY, Gritskevich AA, Ovcharenko EA. Polymeric Heart Valves Will Displace Mechanical and Tissue Heart Valves: A New Era for the Medical Devices. Int J Mol Sci 2023; 24:ijms24043963. [PMID: 36835389 PMCID: PMC9967268 DOI: 10.3390/ijms24043963] [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: 12/30/2022] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
The development of a novel artificial heart valve with outstanding durability and safety has remained a challenge since the first mechanical heart valve entered the market 65 years ago. Recent progress in high-molecular compounds opened new horizons in overcoming major drawbacks of mechanical and tissue heart valves (dysfunction and failure, tissue degradation, calcification, high immunogenic potential, and high risk of thrombosis), providing new insights into the development of an ideal artificial heart valve. Polymeric heart valves can best mimic the tissue-level mechanical behavior of the native valves. This review summarizes the evolution of polymeric heart valves and the state-of-the-art approaches to their development, fabrication, and manufacturing. The review discusses the biocompatibility and durability testing of previously investigated polymeric materials and presents the most recent developments, including the first human clinical trials of LifePolymer. New promising functional polymers, nanocomposite biomaterials, and valve designs are discussed in terms of their potential application in the development of an ideal polymeric heart valve. The superiority and inferiority of nanocomposite and hybrid materials to non-modified polymers are reported. The review proposes several concepts potentially suitable to address the above-mentioned challenges arising in the R&D of polymeric heart valves from the properties, structure, and surface of polymeric materials. Additive manufacturing, nanotechnology, anisotropy control, machine learning, and advanced modeling tools have given the green light to set new directions for polymeric heart valves.
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Affiliation(s)
- Maria A. Rezvova
- Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia
| | - Kirill Y. Klyshnikov
- Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia
| | | | - Evgeny A. Ovcharenko
- Research Institute for Complex Issues of Cardiovascular Diseases, 650002 Kemerovo, Russia
- Correspondence:
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29
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Yazdani-Ahmadabadi H, Yu K, Khoddami S, F. Felix D, Yeh HH, Luo HD, Moskalev I, Wang Q, Wang R, Grecov D, Fazli L, Lange D, Kizhakkedathu JN. Robust Nanoparticle-Derived Lubricious Antibiofilm Coating for Difficult-to-Coat Medical Devices with Intricate Geometry. ACS NANOSCIENCE AU 2023; 3:67-83. [PMID: 36820095 PMCID: PMC9936578 DOI: 10.1021/acsnanoscienceau.2c00040] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/12/2022] [Accepted: 10/13/2022] [Indexed: 06/18/2023]
Abstract
A major medical device-associated complication is the biofilm-related infection post-implantation. One promising approach to prevent this is to coat already commercialized medical devices with effective antibiofilm materials. However, developing a robust high-performance antibiofilm coating on devices with a nonflat geometry remains unmet. Here, we report the development of a facile scalable nanoparticle-based antibiofilm silver composite coating with long-term activity applicable to virtually any objects including difficult-to-coat commercially available medical devices utilizing a catecholic organic-aqueous mixture. Using a screening approach, we have identified a combination of the organic-aqueous buffer mixture which alters polycatecholamine synthesis, nanoparticle formation, and stabilization, resulting in controlled deposition of in situ formed composite silver nanoparticles in the presence of an ultra-high-molecular-weight hydrophilic polymer on diverse objects irrespective of its geometry and chemistry. Methanol-mediated synthesis of polymer-silver composite nanoparticles resulted in a biocompatible lubricious coating with high mechanical durability, long-term silver release (∼90 days), complete inhibition of bacterial adhesion, and excellent killing activity against a diverse range of bacteria over the long term. Coated catheters retained their excellent activity even after exposure to harsh mechanical challenges (rubbing, twisting, and stretching) and storage conditions (>3 months stirring in water). We confirmed its excellent bacteria-killing efficacy (>99.999%) against difficult-to-kill bacteria (Proteus mirabilis) and high biocompatibility using percutaneous catheter infection mice and subcutaneous implant rat models, respectively, in vivo. The developed coating approach opens a new avenue to transform clinically used medical devices (e.g., urinary catheters) to highly infection-resistant devices to prevent and treat implant/device-associated infections.
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Affiliation(s)
- Hossein Yazdani-Ahmadabadi
- Department
of Chemistry, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
| | - Kai Yu
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver V6T 1Z7, British Columbia, Canada
| | - Sara Khoddami
- Department
of Urologic Sciences, University of British
Columbia, Vancouver V6H 3Z6, British Columbia, Canada
- The
Stone Centre at Vancouver General Hospital, Vancouver V5Z 1M9, British Columbia, Canada
| | - Demian F. Felix
- Department
of Urologic Sciences, University of British
Columbia, Vancouver V6H 3Z6, British Columbia, Canada
- The
Stone Centre at Vancouver General Hospital, Vancouver V5Z 1M9, British Columbia, Canada
| | - Han H. Yeh
- Department
of Mechanical Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Haiming D. Luo
- Department
of Chemistry, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
| | - Igor Moskalev
- Vancouver
Prostate Centre, University of British Columbia, Vancouver V6H 3Z6, British Columbia, Canada
| | - Qiong Wang
- Department
of Materials Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Rizhi Wang
- Department
of Materials Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- School
of Biomedical Engineering, University of
British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
| | - Dana Grecov
- Department
of Mechanical Engineering, University of
British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Ladan Fazli
- Vancouver
Prostate Centre, University of British Columbia, Vancouver V6H 3Z6, British Columbia, Canada
| | - Dirk Lange
- Department
of Urologic Sciences, University of British
Columbia, Vancouver V6H 3Z6, British Columbia, Canada
- The
Stone Centre at Vancouver General Hospital, Vancouver V5Z 1M9, British Columbia, Canada
| | - Jayachandran N. Kizhakkedathu
- Department
of Chemistry, University of British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
- Centre
for Blood Research, Life Science Institute, University of British Columbia, Vancouver V6T 1Z3, British
Columbia, Canada
- Department
of Pathology and Laboratory Medicine, University
of British Columbia, Vancouver V6T 1Z7, British Columbia, Canada
- School
of Biomedical Engineering, University of
British Columbia, Vancouver V6T 1Z3, British Columbia, Canada
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30
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Chu W, Ma Y, Zhang Y, Cao X, Shi Z, Liu Y, Ding X. Significantly improved antifouling capability of silicone rubber surfaces by covalently bonded acrylated agarose towards biomedical applications. Colloids Surf B Biointerfaces 2023; 222:112979. [PMID: 36435025 DOI: 10.1016/j.colsurfb.2022.112979] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
Abstract
Bacteria have the extraordinary ability to adhere to biomaterial surfaces and form multicellular structures known as biofilms, which have a detrimental impact on the performance of medical devices. Herein, an investigation highlighted the effective inhibition of bacteria adhesion and overgrowth on silicone rubber surface by grafting polysaccharide, agarose (AG), to construct hydrophilic and negatively charged surfaces. Because of the strong hydration capacity of agarose, the water contact angle of the modified silicone rubber surfaces was significantly reduced from 107.6 ± 2.7° to 19.3 ± 2.6°, which successfully limited bacterial adherence. Most importantly, the durability and stability of coating were observed after 10 days of simulated dynamic microenvironment in vivo, exhibiting a long service life. This modification method did not compromise biocompatibility of silicone rubber, opening a door to new applications for silicone rubber in the field of biomedical materials.
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Affiliation(s)
- Wenting Chu
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Yuhong Ma
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Yuning Zhang
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Xinjie Cao
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Zhongyu Shi
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Ying Liu
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Xuejia Ding
- Key Laboratory of Biomedical Materials of Natural Macromolecules, Beijing University of Chemical Technology, Ministry of Education, Beijing, China; Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China.
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31
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Friction Optimization of Talc Powder-Reinforced Elastomers for Prosthetic Foot Application. PROSTHESIS 2023. [DOI: 10.3390/prosthesis5010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Patients with lower limb amputation usually use prosthetic feet. Elastomeric material is an important part of prosthetic feet since it can determine their safety and lifetime. The elastomeric material should have high friction for safety, and at the same time it should have low wear for a longer lifetime. This research is aimed to study the optimum formulation of talc-powder-reinforced silicone elastomer to obtain high friction during sliding contact. The Taguchi orthogonal array L9 formula is used to achieve the aforementioned goal. The experiments use multiple parameters, namely, the type of silicone, the type of surface texture, the amount of catalyst, and the amount of talc powder. The results show that the combination of RTV 683, a smooth texture, 4% of catalyst, and 60% of talc powder is the most optimum composition to obtain the highest frictional force. It has a higher friction force in comparison with the imported products, and, at the same time, it has comparable wear with the imported products. The hardness of the optimized materials is comparable with the imported products. However, the tensile and tear strengths of the optimized materials need to be improved.
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32
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Ajdnik U, Luxbacher T, Zemljič LF. Proteins at polysaccharide-based biointerfaces: A comparative study of QCM-D and electrokinetic measurements. Colloids Surf B Biointerfaces 2022; 221:113011. [DOI: 10.1016/j.colsurfb.2022.113011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/28/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
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33
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Zulkiflee I, Masri S, Zawani M, Salleh A, Amirrah IN, Wee MFMR, Yusop SM, Fauzi MB. Silicon-Based Scaffold for Wound Healing Skin Regeneration Applications: A Concise Review. Polymers (Basel) 2022; 14:polym14194219. [PMID: 36236170 PMCID: PMC9571903 DOI: 10.3390/polym14194219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
Silicon has made its breakthrough in various industries, including clinical and biomedical applications. Silicon-based biomaterials that were fabricated into various types of scaffolds may attract interest due to their highly favorable properties covering their excellent biocompatibility, high surface area, mechanical strength, and selectivity depending on their application including film, hydrogel, nanoparticles, and so on. Silicon-based materials have also shown exciting results involving cell culture, cell growth, as well as tissue engineering. In this article, a simple review compromising the evaluation of silicon's unique properties has been discussed and followed by the application of the silicone-based product in future perspectives in biomedical fields. The review goals are to widen and inspire broader interest in silicone-based materials in wound healing research.
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Affiliation(s)
- Izzat Zulkiflee
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Syafira Masri
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Mazlan Zawani
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Atiqah Salleh
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | - Ibrahim Nor Amirrah
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
| | | | - Salma Mohamad Yusop
- Department of Food Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Mh Busra Fauzi
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaakob Latiff, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
- Correspondence:
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Ahmed W, Al-Marzouqi AH, Nazir MH, Rizvi TA, Zaneldin E, Khan M. Comparative Experimental Investigation of Biodegradable Antimicrobial Polymer-Based Composite Produced by 3D Printing Technology Enriched with Metallic Particles. Int J Mol Sci 2022; 23:ijms231911235. [PMID: 36232537 PMCID: PMC9570174 DOI: 10.3390/ijms231911235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/01/2022] [Accepted: 09/08/2022] [Indexed: 11/24/2022] Open
Abstract
Due to the prevailing existence of the COVID-19 pandemic, novel and practical strategies to combat pathogens are on the rise worldwide. It is estimated that, globally, around 10% of hospital patients will acquire at least one healthcare-associated infection. One of the novel strategies that has been developed is incorporating metallic particles into polymeric materials that neutralize infectious agents. Considering the broad-spectrum antimicrobial potency of some materials, the incorporation of metallic particles into the intended hybrid composite material could inherently add significant value to the final product. Therefore, this research aimed to investigate an antimicrobial polymeric PLA-based composite material enhanced with different microparticles (copper, aluminum, stainless steel, and bronze) for the antimicrobial properties of the hybrid composite. The prepared composite material samples produced with fused filament fabrication (FFF) 3D printing technology were tested for different time intervals to establish their antimicrobial activities. The results presented here depict that the sample prepared with 90% copper and 10% PLA showed the best antibacterial activity (99.5%) after just 20 min against different types of bacteria as compared to the other samples. The metallic-enriched PLA-based antibacterial sheets were remarkably effective against Staphylococcus aureus and Escherichia coli; therefore, they can be a good candidate for future biomedical, food packaging, tissue engineering, prosthetic material, textile industry, and other science and technology applications. Thus, antimicrobial sheets made from PLA mixed with metallic particles offer sustainable solutions for a wide range of applications where touching surfaces is a big concern.
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Affiliation(s)
- Waleed Ahmed
- Engineering Requirements Unit, College of Engineering, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
- Correspondence:
| | - Ali H. Al-Marzouqi
- Department of Chemical and Petroleum Engineering, College of Engineering, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Muhammad Hamza Nazir
- Department of Chemical and Petroleum Engineering, College of Engineering, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Tahir A. Rizvi
- Department of Medical Microbiology & Immunology, College of Medicine, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Center for Health Sciences, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Essam Zaneldin
- Department of Civil and Environmental Engineering, College of Engineering, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Mushtaq Khan
- Department of Medical Microbiology & Immunology, College of Medicine, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Center for Health Sciences, UAE University, Al Ain P.O. Box 15551, United Arab Emirates
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Akbari Kenari M, Rezvani Ghomi E, Akbari Kenari A, Arabi SMS, Deylami J, Ramakrishna S. Biomedical applications of microfluidic devices: Achievements and challenges. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mahsa Akbari Kenari
- Department of Chemical Engineering Polytechnique Montreal Montreal Quebec Canada
| | - Erfan Rezvani Ghomi
- Center for Nanotechnology and Sustainability, Department of Mechanical Engineering National University of Singapore Singapore Singapore
| | | | | | - Javad Deylami
- School of Physical and Mathematical Sciences Nanyang Technological University Singapore Singapore
| | - Seeram Ramakrishna
- Center for Nanotechnology and Sustainability, Department of Mechanical Engineering National University of Singapore Singapore Singapore
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Duraivel S, Subramaniam V, Chisolm S, Scheutz GM, Sumerlin BS, Bhattacharjee T, Angelini TE. Leveraging ultra-low interfacial tension and liquid-liquid phase separation in embedded 3D bioprinting. BIOPHYSICS REVIEWS 2022; 3:031307. [PMID: 38505275 PMCID: PMC10903370 DOI: 10.1063/5.0087387] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 08/23/2022] [Indexed: 03/21/2024]
Abstract
Many recently developed 3D bioprinting strategies operate by extruding aqueous biopolymer solutions directly into a variety of different support materials constituted from swollen, solvated, aqueous, polymer assemblies. In developing these 3D printing methods and materials, great care is often taken to tune the rheological behaviors of both inks and 3D support media. By contrast, much less attention has been given to the physics of the interfaces created when structuring one polymer phase into another in embedded 3D printing applications. For example, it is currently unclear whether a dynamic interfacial tension between miscible phases stabilizes embedded 3D bioprinted structures as they are shaped while in a liquid state. Interest in the physics of interfaces between complex fluids has grown dramatically since the discovery of liquid-liquid phase separation (LLPS) in living cells. We believe that many new insights coming from this burst of investigation into LLPS within biological contexts can be leveraged to develop new materials and methods for improved 3D bioprinting that leverage LLPS in mixtures of biopolymers, biocompatible synthetic polymers, and proteins. Thus, in this review article, we highlight work at the interface between recent LLPS research and embedded 3D bioprinting methods and materials, and we introduce a 3D bioprinting method that leverages LLPS to stabilize printed biopolymer inks embedded in a bioprinting support material.
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Affiliation(s)
- Senthilkumar Duraivel
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, USA
| | - Vignesh Subramaniam
- Department of Mechanical & Aerospace Engineering, University of Florida, Gainesville, Florida 32611, USA
| | - Steven Chisolm
- Department of Mechanical & Aerospace Engineering, University of Florida, Gainesville, Florida 32611, USA
| | - Georg M. Scheutz
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA
| | - Brent. S. Sumerlin
- George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science & Engineering, Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA
| | - Tapomoy Bhattacharjee
- National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bellary Road, Bangalore 560065, Karnataka, India
| | - Thomas E. Angelini
- Department of Mechanical & Aerospace Engineering, University of Florida, Gainesville, Florida 32611, USA
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Dardouri M, Bettencourt A, Martin V, Carvalho FA, Colaço B, Gama A, Ramstedt M, Santos NC, Fernandes MH, Gomes PS, Ribeiro IAC. Assuring the Biofunctionalization of Silicone Covalently Bonded to Rhamnolipids: Antibiofilm Activity and Biocompatibility. Pharmaceutics 2022; 14:pharmaceutics14091836. [PMID: 36145584 PMCID: PMC9501004 DOI: 10.3390/pharmaceutics14091836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/10/2022] [Accepted: 08/25/2022] [Indexed: 12/05/2022] Open
Abstract
Silicone-based medical devices composed of polydimethylsiloxane (PDMS) are widely used all over the human body (e.g., urinary stents and catheters, central venous catheters stents) with extreme clinical success. Nevertheless, their abiotic surfaces, being prone to microorganism colonization, are often involved in infection occurrence. Improving PDMS antimicrobial properties by surface functionalization with biosurfactants to prevent related infections has been the goal of different works, but studies that mimic the clinical use of these novel surfaces are missing. This work aims at the biofunctional assessment of PDMS functionalized with rhamnolipids (RLs), using translational tests that more closely mimic the clinical microenvironment. Rhamnolipids were covalently bonded to PDMS, and the obtained surfaces were characterized by contact angle modification assessment, ATR-FTIR analysis and atomic force microscopy imaging. Moreover, a parallel flow chamber was used to assess the Staphylococcus aureus antibiofilm activity of the obtained surfaces under dynamic conditions, and an in vitro characterization with human dermal fibroblast cells in both direct and indirect characterization assays, along with an in vivo subcutaneous implantation assay in the translational rabbit model, was performed. A 1.2 log reduction in S. aureus biofilm was observed after 24 h under flow dynamic conditions. Additionally, functionalized PDMS lessened cell adhesion upon direct contact, while supporting a cytocompatible profile, within an indirect assay. The adequacy of the biological response was further validated upon in vivo subcutaneous tissue implantation. An important step was taken towards biofunctional assessment of RLs-functionalized PDMS, reinforcing their suitability for medical device usage and infection prevention.
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Affiliation(s)
- Maïssa Dardouri
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Ana Bettencourt
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Victor Martin
- BoneLab—Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, University of Porto, Praça Coronel Pacheco, 4050-453 Porto, Portugal
| | - Filomena A. Carvalho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisbon, Portugal
| | - Bruno Colaço
- Animal and Veterinary Research Centre (CECAV), Associate Laboratory for Animal and Veterinary Science–AL4AnimalS, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Adelina Gama
- Animal and Veterinary Research Centre (CECAV), Associate Laboratory for Animal and Veterinary Science–AL4AnimalS, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | | | - Nuno C. Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028 Lisbon, Portugal
| | - Maria H. Fernandes
- BoneLab—Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, University of Porto, Praça Coronel Pacheco, 4050-453 Porto, Portugal
| | - Pedro S. Gomes
- BoneLab—Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, University of Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, University of Porto, Praça Coronel Pacheco, 4050-453 Porto, Portugal
- Correspondence: (P.S.G.); (I.A.C.R.); Tel.: +351-220-910-100 (P.S.G.); +351-217-946-400 (I.A.C.R.); Fax: +351-220-910-101 (P.S.G.); +351-217-946-470 (I.A.C.R.)
| | - Isabel A. C. Ribeiro
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Avenida Prof. Gama Pinto, 1649-003 Lisboa, Portugal
- Correspondence: (P.S.G.); (I.A.C.R.); Tel.: +351-220-910-100 (P.S.G.); +351-217-946-400 (I.A.C.R.); Fax: +351-220-910-101 (P.S.G.); +351-217-946-470 (I.A.C.R.)
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Wlodarczyk J, Musial-Kulik M, Jelonek K, Stojko M, Karpeta-Jarzabek P, Pastusiak M, Janeczek H, Dobrzynski P, Sobota M, Kasperczyk J. Dual-jet electrospun PDLGA/PCU nonwovens as promising mesh implant materials with controlled release of sirolimus and diclofenac. Int J Pharm 2022; 625:122113. [PMID: 35973592 DOI: 10.1016/j.ijpharm.2022.122113] [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: 03/21/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 10/15/2022]
Abstract
Dual-jet electrospinning was employed to produce two-component, partially degradable drug releasing nonwovens with interlacing of poly(D,L-lactide-co-glycolide) (PDLGA) and different poly(carbonate urethanes) (PCUs). Diclofenac sodium and sirolimus were released simultaneously from the copolyester carrier. The research focused on determining of release profiles of drugs, depending on the hydrophilicity of introduced PCU nanofibers. The influence of drugs incorporation on the hydrolytic degradation of the PDLGA and mechanical properties of nonwovens was also studied. Evaluation for interaction with cells in vitro was investigated on a fibroblast cell line in cytotoxicity and surface adhesion tests. Significant changes in drugs release rate, depending on the applied PCU were observed. It was also noticed, that hydrophilicity of drugs significantly influenced the hydrolytic degradation mechanism and surface erosion of the PDLGA, as well as the tensile strength of nonwovens. Tests carried out on cells in an in vitro experiment showed that introduction of sirolimus caused a slight reduction in the viability of fibroblasts as well as a strong limitation in their capability to colonize the surface of fibers. Due to improvement of mechanical strength and the ability to controlled drugs release, the obtained material may be considered as prospect surgical mesh implant in the treatment of hernia.
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Affiliation(s)
- Jakub Wlodarczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Monika Musial-Kulik
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Katarzyna Jelonek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Mateusz Stojko
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland; Department of Biopharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 8 Jednosci St., 41-200 Sosnowiec, Poland
| | - Paulina Karpeta-Jarzabek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Malgorzata Pastusiak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Piotr Dobrzynski
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland
| | - Michal Sobota
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland.
| | - Janusz Kasperczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Curie-Sklodowskiej St., 41-819 Zabrze, Poland; Department of Biopharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 8 Jednosci St., 41-200 Sosnowiec, Poland
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Cazacu M, Dascalu M, Stiubianu GT, Bele A, Tugui C, Racles C. From passive to emerging smart silicones. REV CHEM ENG 2022. [DOI: 10.1515/revce-2021-0089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Amassing remarkable properties, silicones are practically indispensable in our everyday life. In most classic applications, they play a passive role in that they cover, seal, insulate, lubricate, water-proof, weather-proof etc. However, silicone science and engineering are highly innovative, seeking to develop new compounds and materials that meet market demands. Thus, the unusual properties of silicones, coupled with chemical group functionalization, has allowed silicones to gradually evolve from passive materials to active ones, meeting the concept of “smart materials”, which are able to respond to external stimuli. In such cases, the intrinsic properties of polysiloxanes are augmented by various chemical modifications aiming to attach reactive or functional groups, and/or by engineering through proper cross-linking pattern or loading with suitable fillers (ceramic, magnetic, highly dielectric or electrically conductive materials, biologically active, etc.), to add new capabilities and develop high value materials. The literature and own data reflecting the state-of-the art in the field of smart silicones, such as thermoplasticity, self-healing ability, surface activity, electromechanical activity and magnetostriction, thermo-, photo-, and piezoresponsivity are reviewed.
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Affiliation(s)
- Maria Cazacu
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Mihaela Dascalu
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - George-Theodor Stiubianu
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Adrian Bele
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Codrin Tugui
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
| | - Carmen Racles
- Department of Inorganic Polymers , “Petru Poni” Institute of Macromolecular Chemistry , Aleea Gr. Ghica Voda 41A , 700487 Iasi , Romania
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Matin-Mann F, Gao Z, Schwieger J, Ulbricht M, Domsta V, Senekowitsch S, Weitschies W, Seidlitz A, Doll K, Stiesch M, Lenarz T, Scheper V. Individualized, Additively Manufactured Drug-Releasing External Ear Canal Implant for Prevention of Postoperative Restenosis: Development, In Vitro Testing, and Proof of Concept in an Individual Curative Trial. Pharmaceutics 2022; 14:pharmaceutics14061242. [PMID: 35745813 PMCID: PMC9228097 DOI: 10.3390/pharmaceutics14061242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/16/2022] Open
Abstract
Postoperative restenosis in patients with external ear canal (EEC) atresia or stenosis is a common complication following canaloplasty. Our aim in this study was to explore the feasibility of using a three dimensionally (3D)-printed, patient-individualized, drug ((dexamethasone (DEX)), and ciprofloxacin (cipro))-releasing external ear canal implant (EECI) as a postoperative stent after canaloplasty. We designed and pre-clinically tested this novel implant for drug release (by high-performance liquid chromatography), biocompatibility (by the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay), bio-efficacy (by the TNF-α (tumor necrosis factor-alpha)-reduction test (DEX) and inhibition zone test (for cipro)), and microbial contamination (formation of turbidity or sediments in culture medium). The EECI was implanted for the first time to one patient with a history of congenital EEC atresia and state after three canaloplasties due to EEC restenosis. The preclinical tests revealed no cytotoxic effect of the used materials; an antibacterial effect was verified against the bacteria Staphylococcus aureus and Pseudomonas aeruginosa, and the tested UV-irradiated EECI showed no microbiological contamination. Based on the test results, the combination of silicone with 1% DEX and 0.3% cipro was chosen to treat the patient. The EECI was implantable into the EEC; the postoperative follow-up visits revealed no otogenic symptoms or infections and the EECI was explanted three months postoperatively. Even at 12 months postoperatively, the EEC showed good epithelialization and patency. Here, we report the first ever clinical application of an individualized, drug-releasing, mechanically flexible implant and suggest that our novel EECI represents a safe and effective method for postoperatively stenting the reconstructed EEC.
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Affiliation(s)
- Farnaz Matin-Mann
- Department of Otorhinolaryngology, Head and Neck Surgery, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany; (Z.G.); (J.S.); (T.L.); (V.S.)
- Correspondence: ; Tel.: +49-511-532-6565; Fax: +49-511-532-8001
| | - Ziwen Gao
- Department of Otorhinolaryngology, Head and Neck Surgery, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany; (Z.G.); (J.S.); (T.L.); (V.S.)
- Cluster of Excellence”Hearing4all” EXC 1077/1, 30625 Hannover, Germany
| | - Jana Schwieger
- Department of Otorhinolaryngology, Head and Neck Surgery, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany; (Z.G.); (J.S.); (T.L.); (V.S.)
- Cluster of Excellence”Hearing4all” EXC 1077/1, 30625 Hannover, Germany
| | - Martin Ulbricht
- Center of Drug Absorption and Transport, Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, 17489 Greifswald, Germany; (M.U.); (V.D.); (S.S.); (W.W.); (A.S.)
| | - Vanessa Domsta
- Center of Drug Absorption and Transport, Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, 17489 Greifswald, Germany; (M.U.); (V.D.); (S.S.); (W.W.); (A.S.)
| | - Stefan Senekowitsch
- Center of Drug Absorption and Transport, Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, 17489 Greifswald, Germany; (M.U.); (V.D.); (S.S.); (W.W.); (A.S.)
| | - Werner Weitschies
- Center of Drug Absorption and Transport, Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, 17489 Greifswald, Germany; (M.U.); (V.D.); (S.S.); (W.W.); (A.S.)
| | - Anne Seidlitz
- Center of Drug Absorption and Transport, Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, 17489 Greifswald, Germany; (M.U.); (V.D.); (S.S.); (W.W.); (A.S.)
- Institute of Pharmaceutics and Biopharmaceutics, University of Duesseldorf, 40225 Dusseldorf, Germany
| | - Katharina Doll
- Clinic for Dental Prosthetics and Biomedical Materials Science, Hanover Medical School, 30625 Hannover, Germany; (K.D.); (M.S.)
| | - Meike Stiesch
- Clinic for Dental Prosthetics and Biomedical Materials Science, Hanover Medical School, 30625 Hannover, Germany; (K.D.); (M.S.)
| | - Thomas Lenarz
- Department of Otorhinolaryngology, Head and Neck Surgery, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany; (Z.G.); (J.S.); (T.L.); (V.S.)
- Cluster of Excellence”Hearing4all” EXC 1077/1, 30625 Hannover, Germany
| | - Verena Scheper
- Department of Otorhinolaryngology, Head and Neck Surgery, Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Stadtfelddamm 34, 30625 Hannover, Germany; (Z.G.); (J.S.); (T.L.); (V.S.)
- Cluster of Excellence”Hearing4all” EXC 1077/1, 30625 Hannover, Germany
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Gstoettner C, Festin C, Prahm C, Bergmeister KD, Salminger S, Sturma A, Hofer C, Russold MF, Howard CL, McDonnall D, Farina D, Aszmann OC. Feasibility of a Wireless Implantable Multi-electrode System for High-bandwidth Prosthetic Interfacing: Animal and Cadaver Study. Clin Orthop Relat Res 2022; 480:1191-1204. [PMID: 35202032 PMCID: PMC9263498 DOI: 10.1097/corr.0000000000002135] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 01/19/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Currently used prosthetic solutions in upper extremity amputation have limited functionality, owing to low information transfer rates of neuromuscular interfacing. Although surgical innovations have expanded the functional potential of the residual limb, available interfaces are inefficacious in translating this potential into improved prosthetic control. There is currently no implantable solution for functional interfacing in extremity amputation which offers long-term stability, high information transfer rates, and is applicable for all levels of limb loss. In this study, we presented a novel neuromuscular implant, the the Myoelectric Implantable Recording Array (MIRA). To our knowledge, it is the first fully implantable system for prosthetic interfacing with a large channel count, comprising 32 intramuscular electrodes. QUESTIONS/PURPOSES The purpose of this study was to evaluate the MIRA in terms of biocompatibility, functionality, and feasibility of implantation to lay the foundations for clinical application. This was achieved through small- and large-animal studies as well as test surgeries in a human cadaver. METHODS We evaluated the biocompatibility of the system's intramuscular electromyography (EMG) leads in a rabbit model. Ten leads as well as 10 pieces of a biologically inert control material were implanted into the paravertebral muscles of four animals. After a 3-month implantation, tissue samples were taken and histopathological assessment performed. The probes were scored according to a protocol for the assessment of the foreign body response, with primary endpoints being inflammation score, tissue response score, and capsule thickness in µm. In a second study, chronic functionality of the full system was evaluated in large animals. The MIRA was implanted into the shoulder region of six dogs and three sheep, with intramuscular leads distributed across agonist and antagonist muscles of shoulder flexion. During the observation period, regular EMG measurements were performed. The implants were removed after 5 to 6 months except for one animal, which retained the implant for prolonged observation. Primary endpoints of the large-animal study were mechanical stability, telemetric capability, and EMG signal quality. A final study involved the development of test surgeries in a fresh human cadaver, with the goal to determine feasibility to implant relevant target muscles for prosthetic control at all levels of major upper limb amputation. RESULTS Evaluation of the foreign body reaction revealed favorable biocompatibility and a low-grade tissue response in the rabbit study. No differences regarding inflammation score (EMG 4.60 ± 0.97 [95% CI 4.00 to 5.20] versus control 4.20 ± 1.48 [95% CI 3.29 to 5.11]; p = 0.51), tissue response score (EMG 4.00 ± 0.82 [95% CI 3.49 to 4.51] versus control 4.00 ± 0.94 [95% CI 3.42 to 4.58]; p > 0.99), or thickness of capsule (EMG 19.00 ± 8.76 µm [95% CI 13.57 to 24.43] versus control 29.00 ± 23.31 µm [95% CI 14.55 to 43.45]; p = 0.29) were found compared with the inert control article (high-density polyethylene) after 3 months of intramuscular implantation. Throughout long-term implantation of the MIRA in large animals, telemetric communication remained unrestricted in all specimens. Further, the implants retained the ability to record and transmit intramuscular EMG data in all animals except for two sheep where the implants became dislocated shortly after implantation. Electrode impedances remained stable and below 5 kΩ. Regarding EMG signal quality, there was little crosstalk between muscles and overall average signal-to-noise ratio was 22.2 ± 6.2 dB. During the test surgeries, we found that it was possible to implant the MIRA at all major amputation levels of the upper limb in a human cadaver (the transradial, transhumeral, and glenohumeral levels). For each level, it was possible to place the central unit in a biomechanically stable environment to provide unhindered telemetry, while reaching the relevant target muscles for prosthetic control. At only the glenohumeral level, it was not possible to reach the teres major and latissimus dorsi muscles, which would require longer lead lengths. CONCLUSION As assessed in a combination of animal model and cadaver research, the MIRA shows promise for clinical research in patients with limb amputation, where it may be employed for all levels of major upper limb amputation to provide long-term stable intramuscular EMG transmission. CLINICAL RELEVANCE In our study, the MIRA provided high-bandwidth prosthetic interfacing through intramuscular electrode sites. Its high number of individual EMG channels may be combined with signal decoding algorithms for accessing spinal motor neuron activity after targeted muscle reinnervation, thus providing numerous degrees of freedom. Together with recent innovations in amputation surgery, the MIRA might enable improved control approaches for upper limb amputees, particularly for patients with above-elbow amputation where the mismatch between available control signals and necessary degrees of freedom for prosthetic control is highest.
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Affiliation(s)
- Clemens Gstoettner
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
| | - Christopher Festin
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
| | - Cosima Prahm
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
- BG Trauma Clinic, Eberhard Karls University, Department for Plastic and Reconstructive Surgery, Tübingen, Germany
| | - Konstantin D. Bergmeister
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
- Karl Landsteiner University of Health Sciences, Krems, Austria
- Department of Plastic, Aesthetic and Reconstructive Surgery, University Hospital St. Poelten, St. Poelten, Austria
| | - Stefan Salminger
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
| | - Agnes Sturma
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
- Department of Bioengineering, Imperial College London, London, UK
| | - Christian Hofer
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
- Otto Bock Healthcare Products GmbH, Vienna, Austria
| | | | | | | | - Dario Farina
- Department of Bioengineering, Imperial College London, London, UK
| | - Oskar C. Aszmann
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Vienna, Vienna, Austria
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Tan XG, Chen Y, O'Shaughnessy TJ. Material characterization and simulation for soft gels subjected to impulsive loading. J Mech Behav Biomed Mater 2022; 133:105293. [PMID: 35689989 DOI: 10.1016/j.jmbbm.2022.105293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 05/08/2022] [Accepted: 05/21/2022] [Indexed: 12/30/2022]
Abstract
For impact and blast experiments of traumatic brain injury (TBI), soft gel materials are used as surrogates to imitate the mechanical responses of brain tissue. To properly model a viscoelastic gel brain in a surrogate head using a finite element (FE) model, material parameters such as the shear moduli and relaxation time at high strain rates are required. However, such information is scarce in the literature and its applicability for a range of dynamic conditions is unclear. We used an integrated experiment and simulation approach to efficiently determine mechanical properties of soft gels at finite strains, as well as over a wide range of strain rates. A novel impact experiment using a gel block was developed to capture the high strain rate behavior by maximizing the inherent shear wave motion at different impact conditions. A corresponding computational model was used to simulate the gel dynamics of the impact. Parametric simulations utilizing optimization and correlation analyses were used to calibrate multiple material parameters in the nonlinear viscoelastic model to the experimental data. The optimal parameters for gels, including Sylgards 184, 3-6636, and 527, were found. We ascertained the initial shear stiffening effect in gels at high strain rate loadings experimentally and incorporated this effect in the simulation. We have verified the integrated approach by comparing the material properties of the gels with analytical results based on shear wave propagation. This study provides a new approach to calibrate the material behavior of soft gels under high strain rate loading conditions.
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Affiliation(s)
- X Gary Tan
- U.S. Naval Research Laboratory, Washington, DC, 20375, USA.
| | - YungChia Chen
- U.S. Naval Research Laboratory, Washington, DC, 20375, USA
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Schwieger J, Frisch AS, Rau TS, Lenarz T, Hügl S, Scheper V. 3D Printed Cell Culture Chamber for Testing the Effect of Pump-Based Chronic Drug Delivery on Inner Ear Tissue. Biomolecules 2022; 12:biom12040589. [PMID: 35454178 PMCID: PMC9032916 DOI: 10.3390/biom12040589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/11/2022] [Accepted: 04/15/2022] [Indexed: 11/16/2022] Open
Abstract
Cochlear hair cell damage and spiral ganglion neuron (SGN) degeneration are the main causes of sensory neural hearing loss. Cochlear implants (CIs) can replace the function of the hair cells and stimulate the SGNs electrically. The condition of the SGNs and their spatial distance to the CI are key factors for CI-functionality. For a better performance, a high number of neurons and a closer contact to the electrode are intended. Neurotrophic factors are able to enhance SGN survival and neurite outgrowth, and thereby might optimize the electrode-nerve interaction. This would require chronic factor treatment, which is not yet established for the inner ear. Investigations on chronic drug delivery to SGNs could benefit from an appropriate in vitro model. Thus, an inner ear inspired Neurite Outgrowth Chamber (NOC), which allows the incorporation of a mini-osmotic pump for long-term drug delivery, was designed and three-dimensionally printed. The NOC’s function was validated using spiral ganglion explants treated with ciliary neurotrophic factor, neurotrophin-3, or control fluid released via pumps over two weeks. The NOC proved to be suitable for explant cultivation and observation of pump-based drug delivery over the examined period, with neurotrophin-3 significantly increasing neurite outgrowth compared to the other groups.
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Affiliation(s)
- Jana Schwieger
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, 30625 Hannover, Germany; (A.S.F.); (T.S.R.); (T.L.); (S.H.); (V.S.)
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Stadtfelddamm 34, 30625 Hannover, Germany
- Cluster of Excellence “Hearing4all” EXC 1077/2, 30625 Hannover, Germany
- Correspondence: ; Tel.: +49-5115327262
| | - Anna Sophie Frisch
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, 30625 Hannover, Germany; (A.S.F.); (T.S.R.); (T.L.); (S.H.); (V.S.)
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Stadtfelddamm 34, 30625 Hannover, Germany
| | - Thomas S. Rau
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, 30625 Hannover, Germany; (A.S.F.); (T.S.R.); (T.L.); (S.H.); (V.S.)
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Stadtfelddamm 34, 30625 Hannover, Germany
- Cluster of Excellence “Hearing4all” EXC 1077/2, 30625 Hannover, Germany
| | - Thomas Lenarz
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, 30625 Hannover, Germany; (A.S.F.); (T.S.R.); (T.L.); (S.H.); (V.S.)
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Stadtfelddamm 34, 30625 Hannover, Germany
- Cluster of Excellence “Hearing4all” EXC 1077/2, 30625 Hannover, Germany
| | - Silke Hügl
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, 30625 Hannover, Germany; (A.S.F.); (T.S.R.); (T.L.); (S.H.); (V.S.)
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Stadtfelddamm 34, 30625 Hannover, Germany
- Cluster of Excellence “Hearing4all” EXC 1077/2, 30625 Hannover, Germany
| | - Verena Scheper
- Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, 30625 Hannover, Germany; (A.S.F.); (T.S.R.); (T.L.); (S.H.); (V.S.)
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Stadtfelddamm 34, 30625 Hannover, Germany
- Cluster of Excellence “Hearing4all” EXC 1077/2, 30625 Hannover, Germany
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Parimala Chelvi Ratnamani M, Zhang X, Wang H. A Comprehensive Assessment on the Pivotal Role of Hydrogels in Scaffold-Based Bioprinting. Gels 2022; 8:gels8040239. [PMID: 35448140 PMCID: PMC9028353 DOI: 10.3390/gels8040239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 02/05/2023] Open
Abstract
The past a few decades have seen exponential growth in the field of regenerative medicine. What began as extirpative (complete tissue or organ removal), with little regard to the effects of tissue loss and/or disfigurement, has evolved towards fabricating engineered tissues using personalized living cells (e.g., stem cells), and customizing a matrix or structural organization to support and guide tissue development. Biofabrication, largely accomplished through three-dimensional (3D) printing technology, provides precise, controlled, and layered assemblies of cells and biomaterials, emulating the heterogenous microenvironment of the in vivo tissue architecture. This review provides a concise framework for the bio-manufacturing process and addresses the contributions of hydrogels to biological modeling. The versatility of hydrogels in bioprinting is detailed along with an extensive elaboration of their physical, mechanical, and biological properties, as well as their assets and limitations in bioprinting. The scope of various hydrogels in tissue formation has been discussed through the case studies of biofabricated 3D constructs in order to provide the readers with a glimpse into the barrier-breaking accomplishments of biomedical sciences. In the end, the restraints of bioprinting itself are discussed, accompanied with the identification of available engineering strategies to overcome them.
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Affiliation(s)
| | - Xinping Zhang
- Department of Orthopaedics, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY 14642, USA;
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA;
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, USA
- Correspondence:
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Capuani S, Malgir G, Chua CYX, Grattoni A. Advanced Strategies to Thwart Foreign Body Response to Implantable Devices. Bioeng Transl Med 2022; 7:e10300. [PMID: 36176611 PMCID: PMC9472022 DOI: 10.1002/btm2.10300] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 11/10/2022] Open
Abstract
Mitigating the foreign body response (FBR) to implantable medical devices (IMDs) is critical for successful long‐term clinical deployment. The FBR is an inevitable immunological reaction to IMDs, resulting in inflammation and subsequent fibrotic encapsulation. Excessive fibrosis may impair IMDs function, eventually necessitating retrieval or replacement for continued therapy. Therefore, understanding the implant design parameters and their degree of influence on FBR is pivotal to effective and long lasting IMDs. This review gives an overview of FBR as well as anti‐FBR strategies. Furthermore, we highlight recent advances in biomimetic approaches to resist FBR, focusing on their characteristics and potential biomedical applications.
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Affiliation(s)
- Simone Capuani
- Department of Nanomedicine Houston Methodist Research Institute Houston TX USA
- University of Chinese Academy of Science (UCAS) 19 Yuquan Road Beijing China
| | - Gulsah Malgir
- Department of Nanomedicine Houston Methodist Research Institute Houston TX USA
- Department of Biomedical Engineering University of Houston Houston TX USA
| | | | - Alessandro Grattoni
- Department of Nanomedicine Houston Methodist Research Institute Houston TX USA
- Department of Surgery Houston Methodist Hospital Houston TX USA
- Department of Radiation Oncology Houston Methodist Hospital Houston TX USA
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Levana O, Hong S, Kim SH, Jeong JH, Hur SS, Lee JW, Kwon KS, Hwang Y. A Novel Strategy for Creating an Antibacterial Surface Using a Highly Efficient Electrospray-Based Method for Silica Deposition. Int J Mol Sci 2022; 23:513. [PMID: 35008939 PMCID: PMC8745460 DOI: 10.3390/ijms23010513] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/28/2021] [Accepted: 12/31/2021] [Indexed: 12/17/2022] Open
Abstract
Adhesion of bacteria on biomedical implant surfaces is a prerequisite for biofilm formation, which may increase the chances of infection and chronic inflammation. In this study, we employed a novel electrospray-based technique to develop an antibacterial surface by efficiently depositing silica homogeneously onto polyethylene terephthalate (PET) film to achieve hydrophobic and anti-adhesive properties. We evaluated its potential application in inhibiting bacterial adhesion using both Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) bacteria. These silica-deposited PET surfaces could provide hydrophobic surfaces with a water contact angle greater than 120° as well as increased surface roughness (root mean square roughness value of 82.50 ± 16.22 nm and average roughness value of 65.15 ± 15.26 nm) that could significantly reduce bacterial adhesion by approximately 66.30% and 64.09% for E. coli and S. aureus, respectively, compared with those on plain PET surfaces. Furthermore, we observed that silica-deposited PET surfaces showed no detrimental effects on cell viability in human dermal fibroblasts, as confirmed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyl tetrazolium bromide and live/dead assays. Taken together, such approaches that are easy to synthesize, cost effective, and efficient, and could provide innovative strategies for preventing bacterial adhesion on biomedical implant surfaces in the clinical setting.
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Affiliation(s)
- Odelia Levana
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-si 31151, Chungnam-do, Korea; (O.L.); (J.H.J.); (S.S.H.)
- Department of Integrated Biomedical Science, Soonchunhyang University, Asan-si 31538, Chungnam-do, Korea
| | - Soonkook Hong
- Department of Mechanical and Naval Architectural Engineering, Republic of Korea Naval Academy, Changwon-si 51704, Kyungsangnam-do, Korea;
| | - Se Hyun Kim
- Department of Electronic Materials, Devices and Equipment Engineering, Soonchunhyang University, Asan-si 31538, Chungnam-do, Korea;
| | - Ji Hoon Jeong
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-si 31151, Chungnam-do, Korea; (O.L.); (J.H.J.); (S.S.H.)
- Department of Integrated Biomedical Science, Soonchunhyang University, Asan-si 31538, Chungnam-do, Korea
| | - Sung Sik Hur
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-si 31151, Chungnam-do, Korea; (O.L.); (J.H.J.); (S.S.H.)
| | - Jin Woo Lee
- Department of Molecular Medicine, Gachon University College of Medicine, Incheon 21936, Korea;
| | - Kye-Si Kwon
- Department of Electronic Materials, Devices and Equipment Engineering, Soonchunhyang University, Asan-si 31538, Chungnam-do, Korea;
- Department of Mechanical Engineering, Soonchunhyang University, Asan-si 31538, Chungnam-do, Korea
| | - Yongsung Hwang
- Soonchunhyang Institute of Medi-Bio Science (SIMS), Soonchunhyang University, Cheonan-si 31151, Chungnam-do, Korea; (O.L.); (J.H.J.); (S.S.H.)
- Department of Integrated Biomedical Science, Soonchunhyang University, Asan-si 31538, Chungnam-do, Korea
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Sultana A, Zare M, Luo H, Ramakrishna S. Surface Engineering Strategies to Enhance the In Situ Performance of Medical Devices Including Atomic Scale Engineering. Int J Mol Sci 2021; 22:11788. [PMID: 34769219 PMCID: PMC8583812 DOI: 10.3390/ijms222111788] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/14/2021] [Accepted: 10/26/2021] [Indexed: 12/13/2022] Open
Abstract
Decades of intense scientific research investigations clearly suggest that only a subset of a large number of metals, ceramics, polymers, composites, and nanomaterials are suitable as biomaterials for a growing number of biomedical devices and biomedical uses. However, biomaterials are prone to microbial infection due to Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Staphylococcus epidermidis (S. epidermidis), hepatitis, tuberculosis, human immunodeficiency virus (HIV), and many more. Hence, a range of surface engineering strategies are devised in order to achieve desired biocompatibility and antimicrobial performance in situ. Surface engineering strategies are a group of techniques that alter or modify the surface properties of the material in order to obtain a product with desired functionalities. There are two categories of surface engineering methods: conventional surface engineering methods (such as coating, bioactive coating, plasma spray coating, hydrothermal, lithography, shot peening, and electrophoretic deposition) and emerging surface engineering methods (laser treatment, robot laser treatment, electrospinning, electrospray, additive manufacturing, and radio frequency magnetron sputtering technique). Atomic-scale engineering, such as chemical vapor deposition, atomic layer etching, plasma immersion ion deposition, and atomic layer deposition, is a subsection of emerging technology that has demonstrated improved control and flexibility at finer length scales than compared to the conventional methods. With the advancements in technologies and the demand for even better control of biomaterial surfaces, research efforts in recent years are aimed at the atomic scale and molecular scale while incorporating functional agents in order to elicit optimal in situ performance. The functional agents include synthetic materials (monolithic ZnO, quaternary ammonium salts, silver nano-clusters, titanium dioxide, and graphene) and natural materials (chitosan, totarol, botanical extracts, and nisin). This review highlights the various strategies of surface engineering of biomaterial including their functional mechanism, applications, and shortcomings. Additionally, this review article emphasizes atomic scale engineering of biomaterials for fabricating antimicrobial biomaterials and explores their challenges.
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Affiliation(s)
- Afreen Sultana
- Center for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117581, Singapore; (A.S.); (S.R.)
| | - Mina Zare
- Center for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117581, Singapore; (A.S.); (S.R.)
| | - Hongrong Luo
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu 610064, China
| | - Seeram Ramakrishna
- Center for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117581, Singapore; (A.S.); (S.R.)
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