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Sangeetha K, Albeshr MF, Shoba K, Lavanya G, Prasad PS, Sudha PN. Evaluation of cytocompatibility and cell proliferation of electrospun chitosan/polyvinyl alcohol/montmorillonite clay scaffold with l929 cell lines in skin regeneration activity and in silico molecular docking studies. Int J Biol Macromol 2024; 268:131762. [PMID: 38657925 DOI: 10.1016/j.ijbiomac.2024.131762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/02/2024] [Accepted: 04/20/2024] [Indexed: 04/26/2024]
Abstract
The present investigation describes the development of a novel Chitosan/Polyvinyl Alcohol/Montmorillonite Clay (CS/PVA/MMT) scaffold by adopting an electrospinning method, and their biocompatibility was evaluated in vitro with L929 fibroblast cell line to ascertain its use in wound healing applications. The fabricated scaffold was characterized using analytical techniques. FT-IR measurement exhibited the existence of relevant functional groups and XRD implies scaffolds' amorphous nature. The scaffold's morphology and pore diameter were assessed using TEM and SEM. The pore diameter of the as-prepared scaffold was approximately 125 nm. The antimicrobial assay of the scaffold was evaluated against selected pathogens which demonstrated higher antimicrobial efficacy. The scavenging activity tested using the DPPH assay showed remarkable scavenging capability. The wound healing properties were tested through the Cytotoxicity assay conducted on the L929 assay which proved the scaffold to be a suitable material for cell proliferation. Also, a Molecular docking investigation was carried out for CS/PVA/MMT ligand using human neutrophil elastase (HNE) 1H1B protein as a receptor in the CB-Dock server. Studies conducted in silico revealed strong interaction and high binding energy ratings of CS/PVA/MMT ligand with key residues of human neutrophil elastase (HNE) 1H1B proteins that help in tissue regeneration activity.
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Affiliation(s)
- K Sangeetha
- Biomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous), Vellore, Tamilnadu, India
| | - Mohammed F Albeshr
- Department of Zoology, College of Sciences, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia
| | - K Shoba
- Department of Biochemistry, DKM College for Women (Autonomous), Vellore, Tamilnadu, India
| | - G Lavanya
- Department of Chemistry, Saveetha Engineering College, Thandalam, Chennai, Tamilnadu, India
| | - P Supriya Prasad
- Department of Chemistry, Muthurangam Govt. Arts College, Vellore, Tamilnadu, India
| | - P N Sudha
- Biomaterials Research Lab, Department of Chemistry, DKM College for Women (Autonomous), Vellore, Tamilnadu, India; Department of Physiology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, Tamil Nadu, India.
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Soleymani Eil Bakhtiari S, Karbasi S. Keratin-containing scaffolds for tissue engineering applications: a review. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:916-965. [PMID: 38349200 DOI: 10.1080/09205063.2024.2311450] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/24/2024] [Indexed: 04/13/2024]
Abstract
In tissue engineering and regenerative medicine applications, the utilization of bioactive materials has become a routine tool. The goal of tissue engineering is to create new organs and tissues by combining cell biology, materials science, reactor engineering, and clinical research. As part of the growth pattern for primary cells in an organ, backing material is frequently used as a supporting material. A porous three-dimensional (3D) scaffold can provide cells with optimal conditions for proliferating, migrating, differentiating, and functioning as a framework. Optimizing the scaffolds' structure and altering their surface may improve cell adhesion and proliferation. A keratin-based biomaterials platform has been developed as a result of discoveries made over the past century in the extraction, purification, and characterization of keratin proteins from hair and wool fibers. Biocompatibility, biodegradability, intrinsic biological activity, and cellular binding motifs make keratin an attractive biomaterial for tissue engineering scaffolds. Scaffolds for tissue engineering have been developed from extracted keratin proteins because of their capacity to self-assemble and polymerize into intricate 3D structures. In this review article, applications of keratin-based scaffolds in different tissues including bone, skin, nerve, and vascular are explained based on common methods of fabrication such as electrospinning, freeze-drying process, and sponge replication method.
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Affiliation(s)
- Sanaz Soleymani Eil Bakhtiari
- Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
| | - Saeed Karbasi
- Biomaterials and Tissue Engineering Department, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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Shi S, Ou X, Cheng D. How Advancing is Peripheral Nerve Regeneration Using Nanofiber Scaffolds? A Comprehensive Review of the Literature. Int J Nanomedicine 2023; 18:6763-6779. [PMID: 38026517 PMCID: PMC10657550 DOI: 10.2147/ijn.s436871] [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: 08/24/2023] [Accepted: 11/02/2023] [Indexed: 12/01/2023] Open
Abstract
Peripheral nerve injuries present significant challenges in regenerative medicine, primarily due to inherent limitations in the body's natural healing processes. In response to these challenges and with the aim of enhancing peripheral nerve regeneration, nanofiber scaffolds have emerged as a promising and advanced intervention. However, a deeper understanding of the underlying mechanistic foundations that drive the favorable contributions of nanofiber scaffolds to nerve regeneration is essential. In this comprehensive review, we make an exploration of the latent potential of nanofiber scaffolds in augmenting peripheral nerve regeneration. This exploration includes a detailed introduction to the fabrication methods of nanofibers, an analysis of the intricate interactions between these scaffolds and cellular entities, an examination of strategies related to the controlled release of bioactive agents, an assessment of the prospects for clinical translation, an exploration of emerging trends, and thorough considerations regarding biocompatibility and safety. By comprehensively elucidating the intricate structural attributes and multifaceted functional capacities inherent in nanofiber scaffolds, we aim to offer a prospective and effective strategy for the treatment of peripheral nerve injury.
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Affiliation(s)
- Shaoyan Shi
- Department of Hand Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an Honghui Hospital North District, Xi’an, Shaanxi, 710000, People’s Republic of China
| | - Xuehai Ou
- Department of Hand Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an Honghui Hospital North District, Xi’an, Shaanxi, 710000, People’s Republic of China
| | - Deliang Cheng
- Department of Hand Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an Honghui Hospital North District, Xi’an, Shaanxi, 710000, People’s Republic of China
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Lusiana RA, Nuryanto R, Dayanti D, Khabibi, Wijayati N, Sasongko NA, Wijaya AR. Synthesis and characterization of chitosan/polyvinyl alcohol immersed in sodium hydroxide thin film as a heterogeneous catalyst in biodiesel production. Int J Biol Macromol 2023; 251:126378. [PMID: 37595724 DOI: 10.1016/j.ijbiomac.2023.126378] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 07/10/2023] [Accepted: 08/15/2023] [Indexed: 08/20/2023]
Abstract
Biodiesel is a potential renewable energy source that can be used to replace fossil fuels because of its low toxicity, biodegradability, and renewability. However, biodiesel production requires long reaction times. Hence, a catalyst is needed to speed up the reaction and optimize production conditions. CS/PVA thin film catalyst immersed in NaOH has intriguing catalytic properties that can improve biodiesel conversion efficiency. In this paper, a series of chitosan/polyvinyl alcohol‑sodium hydroxide (CS/PVA-NaOH) thin films have been prepared as heterogeneous catalysts in biodiesel production. According to the FTIR spectra data, It shows that the vibrational frequency of the hydroxyl group (-OH) shifted from 3271 cm-1 to 3290 cm-1, indicating the hydrogen bond interaction between chitosan and PVA. Water uptake (45.42-218.64 %), swelling (120.63-142.99 %), porosity (62.67-243.43 %), and the durability of the thin film at pH conditions of 5-11 have been found to be the physicochemical characteristics of blended Chitosan/PVA (4/1; 3/2; 2.5/2.5; 2/3; 1/4 (v/v)). The optimal conditions for producing biodiesel were found to be around 65 °C for 90 min with an oil: methanol molar ratio of 1:7. By using a heterogeneous catalyst of CS/PVA-NaOH, the conversion efficiency from oil to biodiesel was achieved at around 95.39-99.52 %.
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Affiliation(s)
- Retno Ariadi Lusiana
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia.
| | - Rahmad Nuryanto
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia
| | - Dilla Dayanti
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia
| | - Khabibi
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia
| | - Nanik Wijayati
- Department of Chemistry, Semarang State University, 50229 Semarang, Indonesia
| | - Nurwarrohman Andre Sasongko
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, 50275 Semarang, Indonesia; Department of Chemistry, Pukyong National University, 608-737 Busan, Republic of Korea.
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Mahdian M, Tabatabai TS, Abpeikar Z, Rezakhani L, Khazaei M. Nerve regeneration using decellularized tissues: challenges and opportunities. Front Neurosci 2023; 17:1295563. [PMID: 37928728 PMCID: PMC10620322 DOI: 10.3389/fnins.2023.1295563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 10/06/2023] [Indexed: 11/07/2023] Open
Abstract
In tissue engineering, the decellularization of organs and tissues as a biological scaffold plays a critical role in the repair of neurodegenerative diseases. Various protocols for cell removal can distinguish the effects of treatment ability, tissue structure, and extracellular matrix (ECM) ability. Despite considerable progress in nerve regeneration and functional recovery, the slow regeneration and recovery potential of the central nervous system (CNS) remains a challenge. The success of neural tissue engineering is primarily influenced by composition, microstructure, and mechanical properties. The primary objective of restorative techniques is to guide existing axons properly toward the distal end of the damaged nerve and the target organs. However, due to the limitations of nerve autografts, researchers are seeking alternative methods with high therapeutic efficiency and without the limitations of autograft transplantation. Decellularization scaffolds, due to their lack of immunogenicity and the preservation of essential factors in the ECM and high angiogenic ability, provide a suitable three-dimensional (3D) substrate for the adhesion and growth of axons being repaired toward the target organs. This study focuses on mentioning the types of scaffolds used in nerve regeneration, and the methods of tissue decellularization, and specifically explores the use of decellularized nerve tissues (DNT) for nerve transplantation.
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Affiliation(s)
- Maryam Mahdian
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Tayebeh Sadat Tabatabai
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Zahra Abpeikar
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Fasa University of Medical Sciences, Fasa, Iran
| | - Leila Rezakhani
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Department of Tissue Engineering, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mozafar Khazaei
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Department of Tissue Engineering, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Ibrahim MA, Alhalafi MH, Emam EAM, Ibrahim H, Mosaad RM. A Review of Chitosan and Chitosan Nanofiber: Preparation, Characterization, and Its Potential Applications. Polymers (Basel) 2023; 15:2820. [PMID: 37447465 DOI: 10.3390/polym15132820] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/13/2023] [Accepted: 06/15/2023] [Indexed: 07/15/2023] Open
Abstract
Chitosan is produced by deacetylating the abundant natural chitin polymer. It has been employed in a variety of applications due to its unique solubility as well as its chemical and biological properties. In addition to being biodegradable and biocompatible, it also possesses a lot of reactive amino side groups that allow for chemical modification and the creation of a wide range of useful derivatives. The physical and chemical characteristics of chitosan, as well as how it is used in the food, environmental, and medical industries, have all been covered in a number of academic publications. Chitosan offers a wide range of possibilities in environmentally friendly textile processes because of its superior absorption and biological characteristics. Chitosan has the ability to give textile fibers and fabrics antibacterial, antiviral, anti-odor, and other biological functions. One of the most well-known and frequently used methods to create nanofibers is electrospinning. This technique is adaptable and effective for creating continuous nanofibers. In the field of biomaterials, new materials include nanofibers made of chitosan. Numerous medications, including antibiotics, chemotherapeutic agents, proteins, and analgesics for inflammatory pain, have been successfully loaded onto electro-spun nanofibers, according to recent investigations. Chitosan nanofibers have several exceptional qualities that make them ideal for use in important pharmaceutical applications, such as tissue engineering, drug delivery systems, wound dressing, and enzyme immobilization. The preparation of chitosan nanofibers, followed by a discussion of the biocompatibility and degradation of chitosan nanofibers, followed by a description of how to load the drug into the nanofibers, are the first issues highlighted by this review of chitosan nanofibers in drug delivery applications. The main uses of chitosan nanofibers in drug delivery systems will be discussed last.
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Affiliation(s)
- Marwan A Ibrahim
- Department of Biology, College of Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia
- Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo 11566, Egypt
| | - Mona H Alhalafi
- Department of Chemistry, College of Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - El-Amir M Emam
- Faculty of Applied Arts, Textile Printing, Dyeing and Finishing Department, Helwan University, Cairo 11795, Egypt
| | - Hassan Ibrahim
- Pretreatment and Finishing of Cellulosic Fibers Department, Textile Research and Technology Institute, National Research Centre, Cairo 12622, Egypt
| | - Rehab M Mosaad
- Department of Biology, College of Science, Majmaah University, Al-Majmaah 11952, Saudi Arabia
- Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo 11566, Egypt
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Patel PK, Pandey LM, Uppaluri RVS. Cyclic desorption based efficacy of polyvinyl alcohol-chitosan variant resins for multi heavy-metal removal. Int J Biol Macromol 2023; 242:124812. [PMID: 37178895 DOI: 10.1016/j.ijbiomac.2023.124812] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/16/2023] [Accepted: 05/07/2023] [Indexed: 05/15/2023]
Abstract
The simultaneous removal of Cu, Pb and Fe from water bodies has been targeted in this work with polyvinyl alcohol (PVA) and chitosan (low, medium, and high molecular weight) derivative and with cyclic desorption efficacy target. For a varied range of adsorbent loading (0.2-2 g L-1), initial concentration (187.7-563.1 mg L-1 for Cu, 5.2-15.6 mg L-1 for Pb, and 61.85-185.55 mg L-1 for Fe), and resin contact time (5 to 720 min), batch adsorption-desorption studies were conducted. After first adsorption-desorption cycle, the optimum absorption capacity was 6.85 mg g-1 for Pb, 243.90 mg g-1 for Cu, and 87.72 mg g-1 for Fe for the high molecular weight chitosan grafted polyvinyl alcohol resin (HCSPVA). The alternate kinetic and equilibrium models were analyzed along with the interaction mechanism between metal ions and functional groups. The cyclic desorption studies were carried out with simple eluent systems such as HCl, HNO3, H2SO4, KOH, and NaOH. The experiments revealed that the HCSPVA derivative has been an impressive, reusable, and effective sorbent for the mitigation of Pb, Fe, and Cu in complex wastewater systems. This is due to its easy synthesis, excellent adsorption capacity, quick sorption rate, and remarkable regeneration capabilities.
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Affiliation(s)
- Prabhat Kumar Patel
- Centre for the Environment, Indian Institute of Technology Guwahati, North Guwahati 781039, Assam, India
| | - Lalit Mohan Pandey
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, North Guwahati 781039, Assam, India
| | - Ramagopal V S Uppaluri
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, North Guwahati 781039, Assam, India.
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Hajian M, Erfani-Moghadam V, Arabi MS, Soltani A, Shahbazi M. A comparison between optimized PLGA and CS-Alg-PLGA microspheres for long-lasting release of glatiramer acetate. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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A novel transdermal delivery route for energy supplements: Electrospun chitosan/polyvinyl alcohol nanofiber patches loaded with vitamin B 12. Int J Biol Macromol 2023; 230:123187. [PMID: 36627031 DOI: 10.1016/j.ijbiomac.2023.123187] [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: 10/01/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
Nanofibrous patches have attracted much attention as a solution to resolve drug delivery challenges. In this study, vitamin B12- loaded polyvinyl alcohol (PVA)/chitosan (Cs) nanofiber patch (NFP) was electrospun and cross-linked by glutaraldehyde (GA). The physicochemical properties of the nanofiber patches were assessed by morphological studies, FTIR analysis, hydrophilicity test, mechanical tests, and in-vitro evaluations including biodegradability, MTT assay, and cumulative release test of vitamin. In-vivo studies were also carried out by measuring vitamin B12 levels in the bloodstream and conducting histopathology studies on the animal models. The results showed that the mean diameter of Cs/PVA/B12 and cross-linked patch were approximately 207 and 256 nm, respectively. Cross-linking of NFP led to the lower, slower, and more continuous release of the vitamin with a slight decrease in biodegradability, and an increase in the mechanical properties of the nanofiber patches. Furthermore, the cytocompatibility assay, MTT, and in vivo results revealed no cytotoxicity of Cs/PVA/B12 NFP towards L929 cell line. No lesion or tissue damage was observed in the skin tissue of the animal models wearing these skin patches. Therefore, B12-loaded NFP can be introduced as a potential candidate for commercial transdermal routes.
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Production of 3D Printed Bi-Layer and Tri-Layer Sandwich Scaffolds with Polycaprolactone and Poly (vinyl alcohol)-Metformin towards Diabetic Wound Healing. Polymers (Basel) 2022; 14:polym14235306. [PMID: 36501700 PMCID: PMC9736052 DOI: 10.3390/polym14235306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/16/2022] [Accepted: 11/23/2022] [Indexed: 12/11/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic disease characterized by impaired insulin secretion, sensitivity, and hyperglycemia. Diabetic wounds are one of the significant complications of T2DM owing to its difficulty in normal healing, resulting in chronic wounds. In the present work, PCL/PVA, PCL/PVA/PCL, and metformin-loaded, PCL/PVA-Met and PCL/PVA-Met/PCL hybrid scaffolds with different designs were fabricated using 3D printing. The porosity and morphological analysis of 3D-printed scaffolds were performed using scanning electron microscopy (SEM). The scaffolds' average pore sizes were between 63.6 ± 4.0 and 112.9 ± 3.0 μm. Molecular and chemical interactions between polymers and the drug were investigated with Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). Mechanical, thermal, and degradation analysis of the scaffolds were undertaken to investigate the physico-chemical characteristics of the scaffolds. Owing to the structure, PCL/PVA/PCL sandwich scaffolds had lower degradation rates than the bi-layer scaffolds. The drug release of the metformin-loaded scaffolds was evaluated with UV spectrometry, and the biocompatibility of the scaffolds on fibroblast cells was determined by cell culture analysis. The drug release in the PCL/PVA-Met scaffold was sustained till six days, whereas in the PCL/PVA-Met/PCL, it continued for 31 days. In the study of drug release kinetics, PCL/PVA-Met and PCL/PVA-Met/PCL scaffolds showed the highest correlation coefficients (R2) values for the first-order release model at 0.8735 and 0.889, respectively. Since the layered structures in the literature are mainly obtained with the electrospun fiber structures, these biocompatible sandwich scaffolds, produced for the first time with 3D-printing technology, may offer an alternative to existing drug delivery systems and may be a promising candidate for enhancing diabetic wound healing.
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Tran Vo TM, Piroonpan T, Preuksarattanawut C, Kobayashi T, Potiyaraj P. Characterization of pH-responsive high molecular-weight chitosan/poly (vinyl alcohol) hydrogel prepared by gamma irradiation for localizing drug release. BIORESOUR BIOPROCESS 2022; 9:89. [PMID: 38647766 PMCID: PMC10992514 DOI: 10.1186/s40643-022-00576-6] [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: 05/17/2022] [Accepted: 08/08/2022] [Indexed: 11/10/2022] Open
Abstract
pH-sensitive hydrogels prepared by gamma irradiation find promising biological applications, partially, in the field of localized drug liberation. Herein, optimal conditions for fabricating high-molecular-weight chitosan/polyvinyl alcohol hybrid hydrogels using gamma irradiation at 10, 25, and 30 kGy were investigated by studying the water uptake behavior, the pore size on the surface, and thermal stability. Furthermore, the crosslinking mechanism of irradiated hydrogels was examined via solid-state 13C NMR spectrum. The swelling ratio of the gamma-irradiated CS/PVA hydrogel was pH-dependent; particularly, the hybrid hydrogel exhibited high swelling ratios under acidic conditions than those under basic conditions due to the protonation of amino groups on CS-backbone in acidic environments. In addition, amoxicillin was used as a model drug in the in vitro drug release investigations in pH-simulated gastric fluid and deionized water at 37 °C. To identify the drug release mechanism, several kinetic models composing zero-order, first-order, Higuchi, Hixson-Crowell, and Korsmeyer-Peppas models were used. The findings suggested that drug release is mediated by a non-Fickian transport mechanism.
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Affiliation(s)
- Tu Minh Tran Vo
- Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Department of Energy and Environment Science, Nagaoka University of Technology, Kamitomioka, 1603-1, Nagaoka, Niigata, 940-2188, Japan
| | - Thananchai Piroonpan
- Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Radiation Processing for Polymer Modification and Nanotechnology (CRPN), Faculty of Science, Kasetsart University, 50 Ngam Wong Wan Rd, Lat Yao, Bangkok, 10900, Chatuchak, Thailand
| | - Charasphat Preuksarattanawut
- Department of Metallurgical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Takaomi Kobayashi
- Department of Energy and Environment Science, Nagaoka University of Technology, Kamitomioka, 1603-1, Nagaoka, Niigata, 940-2188, Japan
| | - Pranut Potiyaraj
- Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand.
- Center of Excellence in Responsive Wearable Materials, Chulalongkorn University, Bangkok, 10330, Thailand.
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Zhou J, Nie Y, Jin C, Zhang JXJ. Engineering Biomimetic Extracellular Matrix with Silica Nanofibers: From 1D Material to 3D Network. ACS Biomater Sci Eng 2022; 8:2258-2280. [PMID: 35377596 DOI: 10.1021/acsbiomaterials.1c01525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Biomaterials at nanoscale is a fast-expanding research field with which extensive studies have been conducted on understanding the interactions between cells and their surrounding microenvironments as well as intracellular communications. Among many kinds of nanoscale biomaterials, mesoporous fibrous structures are especially attractive as a promising approach to mimic the natural extracellular matrix (ECM) for cell and tissue research. Silica is a well-studied biocompatible, natural inorganic material that can be synthesized as morpho-genetically active scaffolds by various methods. This review compares silica nanofibers (SNFs) to other ECM materials such as hydrogel, polymers, and decellularized natural ECM, summarizes fabrication techniques for SNFs, and discusses different strategies of constructing ECM using SNFs. In addition, the latest progress on SNFs synthesis and biomimetic ECM substrates fabrication is summarized and highlighted. Lastly, we look at the wide use of SNF-based ECM scaffolds in biological applications, including stem cell regulation, tissue engineering, drug release, and environmental applications.
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Affiliation(s)
- Junhu Zhou
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Yuan Nie
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Congran Jin
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - John X J Zhang
- Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755, United States
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Liu ZH, Chiang MT, Lin HY. Lytic Bacteriophage as a Biomaterial to Prevent Biofilm Formation and Promote Neural Growth. Tissue Eng Regen Med 2022; 19:987-1000. [PMID: 35648339 DOI: 10.1007/s13770-022-00462-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Although non-lytic filamentous bacteriophages have been made into biomaterial to guide tissue growth, they had limited ability to prevent bacterial infection. In this work a lytic bacteriophage was used to make an antibacterial biomaterial for neural tissue repair. METHODS Lytic phages were chemically bound to the surface of a chitosan film through glutaraldehyde crosslinking. After the chemical reaction, the contact angle of the sample surface and the remaining lytic potential of the phages were measured. The numbers of bacteria on the samples were measured and examined under scanning electron microscopy. Transmission electron microscopy (TEM) was used to observe the phages and phage-infected bacteria. A neuroblast cell line was cultured on the samples to evaluate the sample's biocompatibility. RESULTS The phages conjugated to the chitosan film preserved their lytic potential and reduced 68% of bacterial growth on the sample surface at 120 min (p < 0.001). The phage-linked surface had a significantly higher contact angle than that of the control chitosan (p < 0.05). After 120 min a bacterial biofilm appeared on the control chitosan, while the phage-linked sample effectively prevented biofilm formation. The TEM images demonstrated that the phage attached and lysed the bacteria on the phage-linked sample at 120 min. The phage-linked sample significantly promoted the neuroblast cell attachment (p < 0.05) and proliferation (p < 0.01). The neuroblast on the phage-linked sample demonstrated more cell extensions after day 1. CONCLUSION The purified lytic phages were proven to be a highly bioactive nanomaterial. The phage-chitosan composite material not only promoted neural cell proliferation but also effectively prevent bacterial growth, a major cause of implant failure and removal.
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Affiliation(s)
- Zi-Hao Liu
- Graduate Institute of Chemical Engineering, National Taipei University of Technology, 3, Zhongxiao E Rd, Taipei, 106, Taiwan
| | - Ming-Tse Chiang
- Graduate Institute of Chemical Engineering, National Taipei University of Technology, 3, Zhongxiao E Rd, Taipei, 106, Taiwan
| | - Hsin-Yi Lin
- Graduate Institute of Chemical Engineering, National Taipei University of Technology, 3, Zhongxiao E Rd, Taipei, 106, Taiwan.
- Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, 3, Zhongxiao E Rd, Taipei, 106, Taiwan.
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14
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Cesur S, Cam ME, Sayın FS, Su S, Harker A, Edirisinghe M, Gunduz O. Metformin-Loaded Polymer-Based Microbubbles/Nanoparticles Generated for the Treatment of Type 2 Diabetes Mellitus. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5040-5051. [PMID: 34096296 DOI: 10.1021/acs.langmuir.1c00587] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic metabolic disease that is increasingly common all over the world with a high risk of progressive hyperglycemia and high microvascular and macrovascular complications. The currently used drugs in the treatment of T2DM have insufficient glucose control and can carry detrimental side effects. Several drug delivery systems have been investigated to decrease the side effects and frequency of dosage, and also to increase the effect of oral antidiabetic drugs. In recent years, the use of microbubbles in biomedical applications has greatly increased, and research into microactive carrier bubbles continues to generate more and more clinical interest. In this study, various monodisperse polymer nanoparticles at different concentrations were produced by bursting microbubbles generated using a T-junction microfluidic device. Morphological analysis by scanning electron microscopy, molecular interactions between the components by FTIR, drug release by UV spectroscopy, and physical analysis such as surface tension and viscosity measurement were carried out for the particles generated and solutions used. The microbubbles and nanoparticles had a smooth outer surface. When the microbubbles/nanoparticles were compared, it was observed that they were optimized with 0.3 wt % poly(vinyl alcohol) (PVA) solution, 40 kPa pressure, and a 110 μL/min flow rate, thus the diameters of the bubbles and particles were 100 ± 10 μm and 70 ± 5 nm, respectively. Metformin was successfully loaded into the nanoparticles in these optimized concentrations and characteristics, and no drug crystals and clusters were seen on the surface. Metformin was released in a controlled manner at pH 1.2 for 60 min and at pH 7.4 for 240 min. The process and structures generated offer great potential for the treatment of T2DM.
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Affiliation(s)
| | - Muhammet Emin Cam
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | | | | | - Anthony Harker
- London Centre for Nanotechnology and Department of Physics & Astronomy, University College London, London WC1E 6BT, U.K
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
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15
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Rochani A, Agrahari V, Chandra N, Singh ON, McCormick TJ, Doncel GF, Clark MR, Kaushal G. Development and Preclinical Investigation of Physically Cross-Linked and pH-Sensitive Polymeric Gels as Potential Vaginal Contraceptives. Polymers (Basel) 2022; 14:1728. [PMID: 35566897 PMCID: PMC9101208 DOI: 10.3390/polym14091728] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 12/13/2022] Open
Abstract
This study explored the development of cross-linked gels to potentially provide a physical barrier to vaginal sperm transport for contraception. Two types of gels were formulated, a physically cross-linked iota-carrageenan (Ci) phenylboronic acid functionalized hydroxylpropylmethyacrylate copolymer (PBA)-based (Ci-PBA) gel, designed to block vaginal sperm transport. The second gel was pH-shifting cross-linked Ci-polyvinyl alcohol-boric acid (Ci-PVA-BA) gel, designed to modulate its properties in forming a viscoelastic, weakly cross-linked transient network (due to Ci gelling properties) on vaginal application (at acidic pH of ~3.5-4.5) to a more elastic, densely cross-linked (due to borate-diol cross-linking) gel network at basic pH of 7-8 of seminal fluid, thereby acting as a physical barrier to motile sperm. The gels were characterized for dynamic rheology, physicochemical properties, and impact on sperm functionality (motility, viability, penetration). The rheology data confirmed that the Ci-PBA gel was formed by ionic interactions whereas Ci-PVA-BA gel was chemically cross-linked and became more elastic at basic pH. Based on the screening data, lead gels were selected for in vitro sperm functionality testing. The in vitro results confirmed that the Ci-PBA and Ci-PVA-BA gels created a barrier at the sperm-gel interface, providing sperm blocking properties. For preclinical proof-of-concept, the Ci-PBA gels were applied vaginally and tested for contraceptive efficacy in rabbits, demonstrating only partial efficacy (40-60%). Overall, the in vitro and in vivo results support the development and further optimization of cross-linked gels using commercially available materials as vaginal contraceptives.
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Affiliation(s)
- Ankit Rochani
- Department of Pharmaceutical Science, Thomas Jefferson University, Philadelphia, PA 19107, USA;
| | - Vivek Agrahari
- CONRAD, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (V.A.); (N.C.); (O.N.S.); (T.J.M.); (G.F.D.); (M.R.C.)
| | - Neelima Chandra
- CONRAD, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (V.A.); (N.C.); (O.N.S.); (T.J.M.); (G.F.D.); (M.R.C.)
| | - Onkar N. Singh
- CONRAD, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (V.A.); (N.C.); (O.N.S.); (T.J.M.); (G.F.D.); (M.R.C.)
| | - Timothy J. McCormick
- CONRAD, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (V.A.); (N.C.); (O.N.S.); (T.J.M.); (G.F.D.); (M.R.C.)
| | - Gustavo F. Doncel
- CONRAD, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (V.A.); (N.C.); (O.N.S.); (T.J.M.); (G.F.D.); (M.R.C.)
| | - Meredith R. Clark
- CONRAD, Eastern Virginia Medical School, Norfolk, VA 23507, USA; (V.A.); (N.C.); (O.N.S.); (T.J.M.); (G.F.D.); (M.R.C.)
| | - Gagan Kaushal
- Department of Pharmaceutical Science, Thomas Jefferson University, Philadelphia, PA 19107, USA;
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16
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Li Y, Fraser D, Mereness J, Van Hove A, Basu S, Newman M, Benoit DSW. Tissue Engineered Neurovascularization Strategies for Craniofacial Tissue Regeneration. ACS APPLIED BIO MATERIALS 2022; 5:20-39. [PMID: 35014834 PMCID: PMC9016342 DOI: 10.1021/acsabm.1c00979] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Craniofacial tissue injuries, diseases, and defects, including those within bone, dental, and periodontal tissues and salivary glands, impact an estimated 1 billion patients globally. Craniofacial tissue dysfunction significantly reduces quality of life, and successful repair of damaged tissues remains a significant challenge. Blood vessels and nerves are colocalized within craniofacial tissues and act synergistically during tissue regeneration. Therefore, the success of craniofacial regenerative approaches is predicated on successful recruitment, regeneration, or integration of both vascularization and innervation. Tissue engineering strategies have been widely used to encourage vascularization and, more recently, to improve innervation through host tissue recruitment or prevascularization/innervation of engineered tissues. However, current scaffold designs and cell or growth factor delivery approaches often fail to synergistically coordinate both vascularization and innervation to orchestrate successful tissue regeneration. Additionally, tissue engineering approaches are typically investigated separately for vascularization and innervation. Since both tissues act in concert to improve craniofacial tissue regeneration outcomes, a revised approach for development of engineered materials is required. This review aims to provide an overview of neurovascularization in craniofacial tissues and strategies to target either process thus far. Finally, key design principles are described for engineering approaches that will support both vascularization and innervation for successful craniofacial tissue regeneration.
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Affiliation(s)
- Yiming Li
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - David Fraser
- Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York 14620, United States.,Translational Biomedical Sciences Program, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Jared Mereness
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Amy Van Hove
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Sayantani Basu
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Maureen Newman
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States
| | - Danielle S W Benoit
- Department of Biomedical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Orthopaedics and Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, United States.,Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, New York 14620, United States.,Translational Biomedical Sciences Program, University of Rochester Medical Center, Rochester, New York 14642, United States.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 14642, United States.,Materials Science Program, University of Rochester, Rochester, New York 14627, United States.,Department of Chemical Engineering, University of Rochester, Rochester, New York 14627, United States.,Department of Biomedical Genetics and Center for Oral Biology, University of Rochester Medical Center, Rochester, New York 14642, United States
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17
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Coşkuner Filiz B, Basaran Elalmis Y, Bektaş İS, Kantürk Figen A. Fabrication of stable electrospun blended chitosan-poly(vinyl alcohol) nanofibers for designing naked-eye colorimetric glucose biosensor based on GOx/HRP. Int J Biol Macromol 2021; 192:999-1012. [PMID: 34655587 DOI: 10.1016/j.ijbiomac.2021.10.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/14/2021] [Accepted: 10/07/2021] [Indexed: 02/06/2023]
Abstract
In this study, designing of a stable electrospun blended chitosan (CS)-poly(vinyl alcohol) (PVA) nanofibers for colorimetric glucose biosensing in an aqueous medium was investigated. CS and PVA solutions were blended to acquire an optimum content (CS/PVA:1/4) and electrospunned to obtain uniform and bead-free CS/PVA nanofiber structures following the optimization of the electrospinning parameters (33 kV, 20 cm, and 1.2 ml.h-1). Crosslinking process applied subsequently provided mechanically and chemically stable nanofibers with an average diameter of 378 nm. The morphological homogeneity, high fluid absorption ability (>%50), thermal (<230 °C) and morphological stability, surface hydrophilicity and degrability properties of cross-linked CS/PVA nanofiber demonstrated their great potential to be developed as an eye-readable strip for biosensing applications. The glucose oxidase (GOx) and horseradish peroxidase (HRP) was immobilized by physical adsorption on the cross-linked CS/PVA nanofiber. The glucose assay analysis by ultraviolet-visible (UV-Vis) spectrophotometry using the same enzymatic system of the proposed glucose strips in form of absorbance versus concentration plot was found to be linear over a glucose concentration range of 2.7 to 13.8 mM. The prepared naked eye colorimetric glucose detection strips, with lower detection limit of 2.7 mM, demonstrated dramatic color change from white (0 mM) to brownish-orange (13.8 mM). The developed cross-linked CS/PVA nanofiber strips, prepared by electrospinnig procedure, could be easily adapted to a color map, as an alternative material for glucose sensing. Design of a practical, low-cost, and environmental-friendly bio-based CS/PVA testing strips for eye readable detection were presented and suggested as an applicable medium for a wide range of glucose concentrations.
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Affiliation(s)
- Bilge Coşkuner Filiz
- Yıldız Technical University, Metallurgy and Materials Engineering Department, İstanbul 34210, Turkey.
| | | | - İrem Serra Bektaş
- Yıldız Technical University, Chemical Engineering Department, İstanbul 34210, Turkey
| | - Aysel Kantürk Figen
- Yıldız Technical University, Chemical Engineering Department, İstanbul 34210, Turkey
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18
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Vilchis-León P, Hérnandez-Varela J, Chanona-Pérez JJ, Urby RB, Estrada Guerrero R. Electrospun Mats Based on PVA/NaDDBS/CNx Nanocomposite for Electrochemical Sensing. MATERIALS 2021; 14:ma14216664. [PMID: 34772190 PMCID: PMC8587562 DOI: 10.3390/ma14216664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 10/28/2021] [Accepted: 10/31/2021] [Indexed: 11/20/2022]
Abstract
This study presents a nanocomposite developed with PVA, multiwall carbon nanotubes (CNTs) doped with nitrogen, and NaDDBS, which change the electrical properties of the polymer and its viscosity to be used in electrospinning process for obtaining mats of nano/macro fibers. The proposed nanocomposite was characterized using Fourier transform-infrared and Raman spectroscopy techniques, confirming the presence of the CNxs immersed in the polymer. High-resolution transmission electron microscopy was used to obtain the micrographs that showed the characteristic interplanar distances of the multiwall CNT in the polymeric matrix, with values of 3.63 Å. Finally, the CNx mats were exposed to various aqueous solutions in a potentiostat to demonstrate the effectiveness of the nanofibers for electrochemical analysis. The CNx-induced changes in the electrical properties of the polymer were identified using cyclic voltammograms, while the electrochemical analysis revealed supercapacitor behavior.
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Affiliation(s)
- Paloma Vilchis-León
- Laboratorio de Nanociencia y Nanotecnología, Departamento de Física y Matemáticas, Universidad Iberoamericana, Ciudad de México 01219, Mexico;
- Correspondence:
| | - Josué Hérnandez-Varela
- Laboratorio de Micro y Nano-Biotecnología, Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 07738, Mexico; (J.H.-V.); (J.J.C.-P.)
| | - José Jorge Chanona-Pérez
- Laboratorio de Micro y Nano-Biotecnología, Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 07738, Mexico; (J.H.-V.); (J.J.C.-P.)
| | - Raul Borja Urby
- Center of Micro and Nanotechnology of IPN, Ciudad de México 07738, Mexico;
| | - Rodolfo Estrada Guerrero
- Laboratorio de Nanociencia y Nanotecnología, Departamento de Física y Matemáticas, Universidad Iberoamericana, Ciudad de México 01219, Mexico;
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19
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Parın FN, Ullah S, Yıldırım K, Hashmi M, Kim IS. Fabrication and Characterization of Electrospun Folic Acid/Hybrid Fibers: In Vitro Controlled Release Study and Cytocompatibility Assays. Polymers (Basel) 2021; 13:3594. [PMID: 34685351 PMCID: PMC8537833 DOI: 10.3390/polym13203594] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/10/2021] [Accepted: 10/13/2021] [Indexed: 11/17/2022] Open
Abstract
The fabrication of skin-care products with therapeutic properties has been significant for human health trends. In this study, we developed efficient hydrophilic composite nanofibers (NFs) loaded with the folic acid (FA) by electrospinning and electrospraying processes for tissue engineering or wound healing cosmetic applications. The morphological, chemical and thermal characteristics, in vitro release properties, and cytocompatibility of the resulting composite fibers with the same amount of folic acid were analyzed. The SEM micrographs indicate that the obtained nanofibers were in the nanometer range, with an average fiber diameter of 75-270 nm and a good porosity ratio (34-55%). The TGA curves show that FA inhibits the degradation of the polymer and acts as an antioxidant at high temperatures. More physical interaction between FA and matrices has been shown to occur in the electrospray process than in the electrospinning process. A UV-Vis in vitro study of FA-loaded electrospun fibers for 8 h in artificial acidic (pH 5.44) and alkaline (pH 8.04) sweat solutions exhibited a rapid release of FA-loaded electrospun fibers, showing the effect of polymer matrix-FA interactions and fabrication processes on their release from the nanofibers. PVA-CHi/FA webs have the highest release value, with 95.2% in alkaline media. In acidic media, the highest release (92%) occurred on the PVA-Gel-CHi/sFA sample, and this followed first-order and Korsmeyer-Peppas kinetic models. Further, the L929 cytocompatibility assay results pointed out that all NFs (with/without FA) generated had no cell toxicity; on the contrary, the FA in the fibers facilitates cell growth. Therefore, the nanofibers are a potential candidate material in skin-care and tissue engineering applications.
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Affiliation(s)
- Fatma Nur Parın
- Faculty of Engineering and Nature Science, Department of Polymer Materials Engineering, Mimar Sinan Campus, Bursa Technical University, Bursa 16310, Turkey;
| | - Sana Ullah
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Ueda 386-8567, Japan; (S.U.); (M.H.)
| | - Kenan Yıldırım
- Faculty of Engineering and Nature Science, Department of Polymer Materials Engineering, Mimar Sinan Campus, Bursa Technical University, Bursa 16310, Turkey;
| | - Motahira Hashmi
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Ueda 386-8567, Japan; (S.U.); (M.H.)
| | - Ick-Soo Kim
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Ueda 386-8567, Japan; (S.U.); (M.H.)
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20
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Wang X, Song R, Johnson M, A S, He Z, Milne C, Wang X, Lara-Sáez I, Xu Q, Wang W. An Injectable Chitosan-Based Self-Healable Hydrogel System as an Antibacterial Wound Dressing. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5956. [PMID: 34683575 PMCID: PMC8539725 DOI: 10.3390/ma14205956] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 11/28/2022]
Abstract
Due to their biodegradability and biocompatibility, chitosan-based hydrogels have great potential in regenerative medicine, with applications such as bacteriostasis, hemostasis, and wound healing. However, toxicity and high cost are problems that must be solved for chitosan-based hydrogel crosslinking agents such as formaldehyde, glutaraldehyde, and genipin. Therefore, we developed a biocompatible yet cost-effective chitosan-based hydrogel system as a candidate biomaterial to prevent infection during wound healing. The hydrogel was fabricated by crosslinking chitosan with dialdehyde chitosan (CTS-CHO) via dynamic Schiff-base reactions, resulting in a self-healable and injectable system. The rheological properties, degradation profile, and self-healable properties of the chitosan-based hydrogel were evaluated. The excellent antibacterial activity of the hydrogel was validated by a spread plate experiment. The use of Live/Dead assay on HEK 293 cells showed that the hydrogel exhibited excellent biocompatibility. The results demonstrate that the newly designed chitosan-based hydrogel is an excellent antibacterial wound dressing candidate with good biocompatibility.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Qian Xu
- The Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin 4, Eircode D04 V1W8, Ireland; (X.W.); (R.S.); (M.J.); (S.A.); (Z.H.); (C.M.); (X.W.); (I.L.-S.)
| | - Wenxin Wang
- The Charles Institute of Dermatology, School of Medicine, University College Dublin, Dublin 4, Eircode D04 V1W8, Ireland; (X.W.); (R.S.); (M.J.); (S.A.); (Z.H.); (C.M.); (X.W.); (I.L.-S.)
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21
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Abstract
The idea of creating replacement for damaged or diseased tissue, which will mimic the physiological conditions and simultaneously promote regeneration by patients’ own cells, has been a major challenge in the biomedicine for more than a decade. Therefore, nanofibers are a promising solution to address these challenges. Nanofiber technology is an exciting area attracting the attention of many researchers as a potential solution to these current challenges in the biomedical field such as burn and wound care, organ repair, and treatment for osteoporosis and various diseases. Nanofibers mimic the porous topography of natural extracellular matrix (ECM), hence they are advantageous for tissue regeneration . In biomedical engineering, electrospinning exhibits advantages as a tissue engineering scaffolds producer, which can make appropriate resemblance in physical structure with ECM. This is because of the nanometer scale of ECM fibrils in diameter, which can be mimicked by electrospinning procedure as well as its porous structure. In this review, the applications of nanofibers in various biomedical areas such as tissue engineering, wound dressing and facemask, are summarized. It provides opportunities to develop new materials and techniques that improve the ability for developing quick, sensitive and reliable analytical techniques.
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Affiliation(s)
- A. Ghajarieh
- Young Researchers and Elite Club, Department of Textile Engineering, Yadegar-e-Imam Khomeini (RAH) Shahr-e Rey Branch, Islamic Azad University, 1815163111 Tehran, Iran
| | - S. Habibi
- Department of Textile Engineering, Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Shahr-e Rey Branch, 1815163111 Tehran, Iran
| | - A. Talebian
- Department of Textile Engineering, Islamic Azad University, Yadegar-e-Imam Khomeini (RAH) Shahr-e Rey Branch, 1815163111 Tehran, Iran
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22
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Ge JC, Wu G, Yoon SK, Kim MS, Choi NJ. Study on the Preparation and Lipophilic Properties of Polyvinyl Alcohol (PVA) Nanofiber Membranes via Green Electrospinning. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2514. [PMID: 34684954 PMCID: PMC8541033 DOI: 10.3390/nano11102514] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/17/2021] [Accepted: 09/24/2021] [Indexed: 01/27/2023]
Abstract
As an environmentally friendly water-soluble polymer, polyvinyl alcohol (PVA) has attracted extensive attention because of its non-toxic, degradable, low cost, and good biocompatibility. Electrospinning is a kind of nanotechnology, and the nanofiber membrane prepared by it has the advantages of large surface area-to-volume ratios, nano- to micron-sized fibers, etc. Herein, a simple and facile one-step green electrospinning method was developed to fabricate various environmentally friendly PVA nanofiber membranes. The lipophilic properties of PVA membranes were investigated and optimized according different PVA concentrations. The PVA electrospun fiber prepared from the solution at a concentration of 10 wt% had the highest adsorption capacity for the adsorption of new and waste engine oils, and the waste engine oil adsorption capacity (12.70 g/g) was higher than that of new engine oil (11.67 g/g). It also has a relatively large BET surface area (12.05 m2/g), a pore volume (0.04 cm3/g), and an appropriate pore diameter (13.69 nm) and fiber diameter (174.21 nm). All electrospun PVA membranes showed excellent lipophilic properties due to their oil contact angles of much less than 30°. Therefore, PVA electrospun fibrous membranes have great application potential in the field of purifying engine oil due to the excellent lipophilic properties and oil absorption capacity.
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Affiliation(s)
| | | | - Sam Ki Yoon
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju-si 54896, Korea; (J.C.G.); (G.W.)
| | - Min Soo Kim
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju-si 54896, Korea; (J.C.G.); (G.W.)
| | - Nag Jung Choi
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju-si 54896, Korea; (J.C.G.); (G.W.)
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23
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Core/Shell Glycine-Polyvinyl Alcohol/Polycaprolactone Nanofibrous Membrane Intended for Guided Bone Regeneration: Development and Characterization. COATINGS 2021. [DOI: 10.3390/coatings11091130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Glycine (Gly), which is the simplest amino acid, induces the inflammation response and enhances bone mass density, and particularly its β polymorph has superior mechanical and piezoelectric properties. Therefore, electrospinning of Gly with any polymer, including polyvinyl alcohol (PVA), has a great potential in biomedical applications, such as guided bone regeneration (GBR) application. However, their application is limited due to a fast degradation rate and undesirable mechanical and physical properties. Therefore, encapsulation of Gly and PVA fiber within a poly(ε-caprolactone) (PCL) shell provides a slower degradation rate and improves the mechanical, chemical, and physical properties. A membrane intended for GBR application is a barrier membrane used to guide alveolar bone regeneration by preventing fast-proliferating cells from growing into the bone defect site. In the present work, a core/shell nanofibrous membrane, composed of PCL as shell and PVA:Gly as core, was developed utilizing the coaxial electrospinning technique and characterized morphologically, mechanically, physically, chemically, and thermally. Moreover, the characterization results of the core/shell membrane were compared to monolithic electrospun PCL, PVA, and PVA:Gly fibrous membranes. The results showed that the core-shell membrane appears to be a good candidate for GBR application with a nano-scale fiber of 412 ± 82 nm and microscale pore size of 6.803 ± 0.035 μm. Moreover, the wettability of 47.4 ± 2.2° contact angle (C.A) and mechanical properties of 135 ± 3.05 MPa average modulus of elasticity, 4.57 ± 0.04 MPa average ultimate tensile stress (UTS), and 39.43% ± 0.58% average elongation at break are desirable and suitable for GBR application. Furthermore, the X-ray diffraction (XRD) and transmission electron microscopy (TEM) results exhibited the formation of β-Gly.
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24
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Perez‐Puyana V, Wieringa P, Yuste Y, de la Portilla F, Guererro A, Romero A, Moroni L. Fabrication of hybrid scaffolds obtained from combinations of PCL with gelatin or collagen via electrospinning for skeletal muscle tissue engineering. J Biomed Mater Res A 2021; 109:1600-1612. [PMID: 33665968 PMCID: PMC8359256 DOI: 10.1002/jbm.a.37156] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 02/02/2021] [Accepted: 02/10/2021] [Indexed: 12/04/2022]
Abstract
The creation of skeletal muscle tissue in vitro is a major topic of interest today in the field of biomedical research, due to the lack of treatments for muscle loss due to traumatic accidents or disease. For this reason, the intrinsic properties of nanofibrillar structures to promote cell adhesion, proliferation, and cell alignment presents an attractive tool for regenerative medicine to recreate organized tissues such as muscle. Electrospinning is one of the processing techniques often used for the fabrication of these nanofibrous structures and the combination of synthetic and natural polymers is often required to achieve optimal mechanical and physiochemical properties. Here, polycaprolactone (PCL) is selected as a synthetic polymer used for the fabrication of scaffolds, and the effect of protein addition on the final scaffolds' properties is studied. Collagen and gelatin were the proteins selected and two different concentrations were analyzed (2 and 4 wt/vol%). Different PCL/protein systems were prepared, and a structural, mechanical and functional characterization was performed. The influence of fiber alignment on the properties of the final scaffolds was assessed through morphological, mechanical and biological evaluations. A bioreactor was used to promote cell proliferation and differentiation within the scaffolds. The results revealed that protein addition produced a decrease in the fiber size of the membranes, an increase in their hydrophilicity, and a softening of their mechanical properties. The biological study showed the ability of the selected systems to harbor cells, allow their growth and, potentially, develop musculoskeletal tissues.
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Affiliation(s)
- Victor Perez‐Puyana
- Departamento de Ingeniería QuímicaUniversidad de Sevilla, Facultad de Química, Escuela Politécnica SuperiorSevillaSpain
- Department of Complex Tissue RegenerationMERLN Institute for Technology‐Inspired Regenerative Medicine, Maastricht UniversityMaastrichtThe Netherlands
| | - Paul Wieringa
- Department of Complex Tissue RegenerationMERLN Institute for Technology‐Inspired Regenerative Medicine, Maastricht UniversityMaastrichtThe Netherlands
| | - Yaiza Yuste
- Departamento de CirugíaInstitute of Biomedicine of Seville (IBiS), “Virgen del Rocío” University Hospital, IBIS CSIC/University of SevilleSevillaSpain
| | - Fernando de la Portilla
- Departamento de CirugíaInstitute of Biomedicine of Seville (IBiS), “Virgen del Rocío” University Hospital, IBIS CSIC/University of SevilleSevillaSpain
| | - Antonio Guererro
- Departamento de Ingeniería QuímicaUniversidad de Sevilla, Facultad de Química, Escuela Politécnica SuperiorSevillaSpain
| | - Alberto Romero
- Departamento de Ingeniería QuímicaUniversidad de Sevilla, Facultad de Química, Escuela Politécnica SuperiorSevillaSpain
| | - Lorenzo Moroni
- Department of Complex Tissue RegenerationMERLN Institute for Technology‐Inspired Regenerative Medicine, Maastricht UniversityMaastrichtThe Netherlands
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Abd El Hady WE, Soliman OAEA, El Sabbagh HM, Mohamed EA. Glutaraldehyde-crosslinked chitosan-polyethylene oxide nanofibers as a potential gastroretentive delivery system of nizatidine for augmented gastroprotective activity. Drug Deliv 2021; 28:1795-1809. [PMID: 34470551 PMCID: PMC8428272 DOI: 10.1080/10717544.2021.1971796] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Nizatidine (NIZ), a histamine H2-receptor antagonist, is soluble and stable in the stomach, however, it exhibits a short half-life and a rapid clearance. Therefore, chitosan (CS) and polyethylene oxide (PEO) nanofibers (NFs) at different weight ratios were prepared by electrospinning and characterized. The selected uncrosslinked and glutaraldehyde-crosslinked NFs were investigated regarding floating, solid-state characteristics, in vitro release, and in vitro cytotoxicity. The cytoprotective activity against ethanol-induced gastric injury in rats was evaluated through macroscopical, histopathological, immunohistochemical, and oxidative stress examinations. NFs based on 8:2 CS:PEO exhibited the smallest diameter (119.17 ± 22.05 nm) and the greatest mucoadhesion (22.82 ± 3.21 g/cm2), so they were crosslinked with glutaraldehyde. Solid-state characterization indicated polymers interaction, a successful crosslinking, and NIZ dispersion in NFs. Crosslinking maintained swollen mats at pH 1.2 (swelling% = 29.47 ± 3.50% at 24 h), retarded their erosion at pH 6.8 (swelling%= 84.64 ± 4.91% vs. 25.40 ± 0.79% for the uncrosslinked NFs at 24 h), augmented the floating up to 24 h vs. 10 min for the uncrosslinked NFs at pH 1.2 and prolonged the drug release (%drug released ≥ 93% at 24 h vs. 4 and 5 h for the uncrosslinked NFs at pHs 1.2 and 6.8, respectively). The viability of Caco-2 cells ≥ 86.87 ± 6.86% revealed NFs biocompatibility and unreacted glutaraldehyde removal. Crosslinking of 8:2 CS:PEO NFs potentiated the antiulcer activity (38.98 vs. 8.67 for the uncrosslinked NFs) as well as it preserved the gastric wall architecture, COX-2 expression, and oxidative stress markers levels of the normal rats.
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Afroz MM, Kashem MNH, Piash KMPS, Islam N. Saccharomyces Cerevisiae as an Untapped Source of Fungal Chitosan for Antimicrobial Action. Appl Biochem Biotechnol 2021; 193:3765-3786. [PMID: 34406627 DOI: 10.1007/s12010-021-03639-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/10/2021] [Indexed: 01/01/2023]
Abstract
Despite being widely available, Saccharomyces cerevisiae has not been widely explored for direct extraction of chitosan biopolymer for antimicrobial applications. In our study, S. cerevisiae from Baker's yeast and Aspergillus niger from moldy onion extracts are studied as alternative sources of chitosan; and S cerevisiae chitosan tested for antimicrobial efficacy. The properties of S. cerevisiae chitosan are compared with moldy onion chitosan and shrimp chitosan extracted from shrimp shells. Chitosan extracted from S. cerevisiae is tested for antimicrobial efficacy against Staphylococcus Aureus. The maximum yields of fungal chitosan are 20.85 ± 0.35 mg/g dry S. cerevisiae biomass at 4th day using a culture broth containing sodium acetate, and 16.15 ± 0.95 mg/g dry A. niger biomass at 12th day. The degree of deacetylation (DD%) of the extracted fungal chitosan samples from S. cerevisiae and A. niger is found to be 63.4%, and 61.2% respectively, using Fourier Transform Infrared Spectroscopy. At a concentration of 2 g/L, S. cerevisiae chitosan shows the maximum inhibition zone diameter of 15.48 ± 0.07 mm. Baker's yeast S cerevisiae biomass and A. niger from moldy onions has not been previously explored as a source of extractible fungal chitosan. This study gives insight that S. cerevisiae and A. niger from agricultural or industrial wastes could be a potential biomass source for production of the chitosan biopolymer. The S. cerevisiae chitosan displayed effective antimicrobial properties against S aureus, indicating the viablitiy of S cerevisae as a resource for extraction of high-quality chitosan.
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Affiliation(s)
- Md Masirul Afroz
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
- Department of Chemical Engineering, University of Wyoming, Laramie, WY, USA
| | - Md Nayeem Hasan Kashem
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX, USA
| | | | - Nafisa Islam
- Department of Chemical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh.
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Movahedi M, Salehi AOM, Moezi D, Yarahmadian R. In vitro and in vivo study of aspirin loaded, electrospun polycaprolactone–maltodextrin membrane for enhanced skin tissue regeneration. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1962877] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mehdi Movahedi
- Department of Biomedical Engineering, Islamic Azad University, Shahrekord Branch, Iran
| | | | - Davoud Moezi
- Department of Mechanical Engineering, Isfahan University of Technology, Iran
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Chitosan/Gelatin/PVA Scaffolds for Beta Pancreatic Cell Culture. Polymers (Basel) 2021; 13:polym13142372. [PMID: 34301129 PMCID: PMC8309518 DOI: 10.3390/polym13142372] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/11/2021] [Accepted: 07/13/2021] [Indexed: 02/07/2023] Open
Abstract
Chitosan scaffolds based on blending polymers are a common strategy used in tissue engineering. The objective of this study was evaluation the properties of scaffolds based on a ternary blend of chitosan (Chi), gelatin (Ge), and polyvinyl alcohol (PVA) (Chi/Ge/PVA), which were prepared by cycles of freeze-thawing and freeze-drying. It then was used for three-dimensional BRIN-BD11 beta-cells culturing. Weight ratios of Chi/Ge/PVA (1:1:1, 2:2:1, 2:3:1, and 3:2:1) were proposed and porosity, pore size, degradation, swelling rate, compressive strength, and cell viability analyzed. All ternary blend scaffolds structures are highly porous (with a porosity higher than 80%) and interconnected. The pore size distribution varied from 0.6 to 265 μm. Ternary blends scaffolds had controllable degradation rates compared to binary blend scaffolds, and an improved swelling capacity of the samples with increasing chitosan concentration was found. An increase in Young’s modulus and compressive strength was observed with increasing gelatin concentration. The highest compressive strength reached 101.6 Pa. The MTT assay showed that the ternary blends scaffolds P3 and P4 supported cell viability better than the binary blend scaffold. Therefore, these results illustrated that ternary blends scaffolds P3 and P4 could provide a better environment for BRIN-BD11 cell proliferation.
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Głąb M, Kudłacik-Kramarczyk S, Drabczyk A, Walter J, Kordyka A, Godzierz M, Bogucki R, Tyliszczak B, Sobczak-Kupiec A. Hydroxyapatite Obtained via the Wet Precipitation Method and PVP/PVA Matrix as Components of Polymer-Ceramic Composites for Biomedical Applications. Molecules 2021; 26:molecules26144268. [PMID: 34299547 PMCID: PMC8303795 DOI: 10.3390/molecules26144268] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/07/2021] [Accepted: 07/13/2021] [Indexed: 11/16/2022] Open
Abstract
The aspect of drug delivery is significant in many biomedical subareas including tissue engineering. Many studies are being performed to develop composites with application potential for bone tissue regeneration which at the same provide adequate conditions for osteointegration and deliver the active substance conducive to the healing process. Hydroxyapatite shows a great potential in this field due to its osteoinductive and osteoconductive properties. In the paper, hydroxyapatite synthesis via the wet precipitation method and its further use as a ceramic phase of polymer-ceramic composites based on PVP/PVA have been presented. Firstly, the sedimentation rate of hydroxyapatite in PVP solutions has been determined, which allowed us to select a 15% PVP solution (sedimentation rate was 0.0292 mm/min) as adequate for preparation of homogenous reaction mixture treated subsequently with UV radiation. Both FT-IR spectroscopy and EDS analysis allowed us to confirm the presence of both polymer and ceramic phase in composites. Materials containing hydroxyapatite showed corrugated and well-developed surface. Composites exhibited swelling properties (hydroxyapatite reduced this property by 25%) in simulated physiological fluids, which make them useful in drug delivery (swelling proceeds parallel to the drug release). The short synthesis time, possibility of preparation of composites with desired shapes and sizes and determined physicochemical properties make the composites very promising for biomedical purposes.
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Affiliation(s)
- Magdalena Głąb
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
- Correspondence: (M.G.); (S.K.-K.); (A.D.)
| | - Sonia Kudłacik-Kramarczyk
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
- Correspondence: (M.G.); (S.K.-K.); (A.D.)
| | - Anna Drabczyk
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
- Correspondence: (M.G.); (S.K.-K.); (A.D.)
| | - Janusz Walter
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
| | - Aleksandra Kordyka
- Centre of Polymer and Carbon Materials Polish Academy of Sciences, M. Curie-Skłodowskiej 34 St., 41-819 Zabrze, Poland; (A.K.); (M.G.)
| | - Marcin Godzierz
- Centre of Polymer and Carbon Materials Polish Academy of Sciences, M. Curie-Skłodowskiej 34 St., 41-819 Zabrze, Poland; (A.K.); (M.G.)
| | - Rafał Bogucki
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
| | - Bożena Tyliszczak
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
| | - Agnieszka Sobczak-Kupiec
- Department of Materials Science, Faculty of Materials Engineering and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland; (J.W.); (R.B.); (B.T.); (A.S.-K.)
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Li Y, Zhao E, Li L, Bai L, Zhang W. Facile design of lidocaine-loaded polymeric hydrogel to persuade effects of local anesthesia drug delivery system: complete in vitro and in vivo toxicity analyses. Drug Deliv 2021; 28:1080-1092. [PMID: 34114924 PMCID: PMC8204985 DOI: 10.1080/10717544.2021.1931558] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The principal goal of the present investigation was to enterprise new and effective drug delivery vesicle for the sustained delivery of local anesthetic lidocaine hydrochloride (LDC), using a novel combination of copolymeric hydrogel with tetrahydroxyborate (COP–THB) to improve bioactivity and therapeutic potential. To support this contention, the physical and mechanical properties, rheological characteristics, and component release of candidate formulations were investigated. An optimized formulation of COP–THB containing LDC to an upper maximum concentration of 1.5% w/w was assessed for drug crystallization. The biocompatibility of the prepared COP–THB hydrogel was exhibited strong cell survival (96%) and growth compatibility on L929 fibroblast cell lines, which was confirmed by using methods of MTT assay and microscopic observations. The COP–THB hydrogel release pattern is distinct from that of COP–THB/LDC hydrogels by the slow-release rate and the low percentage of cumulative release. In vivo evaluations were demonstrated the anesthetic effects and toxicity value of treated samples by using mice models. In addition, COP–THB/LDC hydrogels significantly inhibit in vivo tumor growth in mice model and effectively reduced it is in vivo toxicity. The pharmacological evaluation showed that encapsulation of LDC in COP–THB hydrogels prolonged its anesthetic action with favorable in vitro and in vivo compatibility. This novel design may theoretically be used in promising studies involving the controlled release of local anesthetics.Highlights Development a modified sustained release system for the local anesthetic lidocaine. PVP-THB hydrogel to improve the pharmacological properties of the drug and their anesthetic activities. Profiles of PVP-THB/LDC showed that the effective release of associated lidocaine. This new formulation could potentially be used in future local anesthetics.
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Affiliation(s)
- Yan Li
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Erxian Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Li Li
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liying Bai
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wei Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Karakurt I, Ozaltin K, Vargun E, Kucerova L, Suly P, Harea E, Minařík A, Štěpánková K, Lehocky M, Humpolícek P, Vesel A, Mozetic M. Controlled release of enrofloxacin by vanillin-crosslinked chitosan-polyvinyl alcohol blends. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112125. [PMID: 34082942 DOI: 10.1016/j.msec.2021.112125] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/24/2021] [Accepted: 04/18/2021] [Indexed: 11/28/2022]
Abstract
In transdermal drug delivery applications uniform drug distribution and sustained release are of great importance to decrease the side effects. In this direction in the present research, vanillin crosslinked chitosan (CS) and polyvinyl alcohol (PVA) blend based matrix-type transdermal system was prepared by casting and drying of aqueous solutions for local delivery of enrofloxacin (ENR) drug. Subsequently, the properties including the morphology, chemical structure, thermal behavior, tensile strength, crosslinking degree, weight uniformity, thickness, swelling and drug release of the CS-PVA blend films before and after crosslinking were characterized. In vitro drug release profiles showed the sustained release of ENR by the incorporation of vanillin as a crosslinker into the CS-PVA polymer matrix. Furthermore, the release kinetic profiles revealed that the followed mechanism for all samples was Higuchi and the increase of vanillin concentration in the blend films resulted in the change of diffusion mechanism from anomalous transport to Fickian diffusion. Overall, the obtained results suggest that the investigated vanillin crosslinked CS-PVA matrix-type films are potential candidates for transdermal drug delivery system.
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Affiliation(s)
- Ilkay Karakurt
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic.
| | - Kadir Ozaltin
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic.
| | - Elif Vargun
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic; Department of Chemistry, Mugla Sitki Kocman University, Kotekli, 48000 Mugla, Turkey.
| | - Liliana Kucerova
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic.
| | - Pavol Suly
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic.
| | - Evghenii Harea
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic; Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 76001 Zlín, Czech Republic.
| | - Antonín Minařík
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic; Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 76001 Zlín, Czech Republic.
| | - Kateřina Štěpánková
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic.
| | - Marian Lehocky
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic; Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 76001 Zlín, Czech Republic.
| | - Petr Humpolícek
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic; Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, 76001 Zlín, Czech Republic.
| | - Alenka Vesel
- Department of Surface Engineering, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
| | - Miran Mozetic
- Department of Surface Engineering, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
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Qureshi D, Sahoo A, Mohanty B, Anis A, Kulikouskaya V, Hileuskaya K, Agabekov V, Sarkar P, Ray SS, Maji S, Pal K. Fabrication and Characterization of Poly (vinyl alcohol) and Chitosan Oligosaccharide-Based Blend Films. Gels 2021; 7:55. [PMID: 34066326 PMCID: PMC8162339 DOI: 10.3390/gels7020055] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/13/2021] [Accepted: 04/21/2021] [Indexed: 02/02/2023] Open
Abstract
In the present study, we report the development of poly (vinyl alcohol) (PVA) and chitosan oligosaccharide (COS)-based novel blend films. The concentration of COS was varied between 2.5-10.0 wt% within the films. The inclusion of COS added a brown hue to the films. FTIR spectroscopy revealed that the extent of intermolecular hydrogen bonding was most prominent in the film that contained 5.0 wt% of COS. The diffractograms showed that COS altered the degree of crystallinity of the films in a composition-dependent manner. As evident from the thermal analysis, COS content profoundly impacted the evaporation of water molecules from the composite films. Stress relaxation studies demonstrated that the blend films exhibited more mechanical stability as compared to the control film. The impedance profiles indicated the capacitive-dominant behavior of the prepared films. Ciprofloxacin HCl-loaded films showed excellent antimicrobial activity against Escherichia coli and Bacillus cereus. The prepared films were observed to be biocompatible. Hence, the prepared PVA/COS-based blend films may be explored for drug delivery applications.
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Affiliation(s)
- Dilshad Qureshi
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
| | - Ayasharani Sahoo
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
| | | | - Arfat Anis
- SABIC Polymer Research Center, Department of Chemical Engineering, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Viktoryia Kulikouskaya
- The Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus; (V.K.); (K.H.); (V.A.)
| | - Kseniya Hileuskaya
- The Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus; (V.K.); (K.H.); (V.A.)
| | - Vladimir Agabekov
- The Institute of Chemistry of New Materials, National Academy of Sciences of Belarus, 220141 Minsk, Belarus; (V.K.); (K.H.); (V.A.)
| | - Preetam Sarkar
- Department of Food Process Engineering, National Institute of Technology, Rourkela 769008, India;
| | - Sirsendu Sekhar Ray
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
| | - Samarendra Maji
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, India
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, India; (D.Q.); (A.S.); (S.S.R.)
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Mahdian-Dehkordi M, Sarrafzadeh-Rezaei F, Razi M, Mahmoudian M. Fabrication of chitosan-based electrospun nanofiber scaffold: Amplification of biomechanical properties, structural stability, and seeded cell viability. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2021; 12:25-32. [PMID: 33953870 PMCID: PMC8094139 DOI: 10.30466/vrf.2020.123047.2893] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 06/01/2020] [Indexed: 12/14/2022]
Abstract
The cell scaffolds should structurally be manufactured similar to the target tissue's extracellular matrix. This property should be maintained until cell differentiation. For this purpose, in the current study, electrospun nanofiber (EN) of chitosan (Ch)/polyvinyl alcohol (PVA), as a tissue-friend scaffold, was fabricated by electrospinning in different formulations and borax was utilized as an innovative cross-linking agent to up-regulate the structural and biomechanical properties. The weight loss, water absorbability, structural stability, tensile strength and biocompatibility of borax-included and non-included ENs were compared. The finest morphology, weight loss, water absorbability, structural stability in an aqueous environment, tensile strength and cell viability were found in the borax-included EN containing Ch50.00%v/PVA50.00%v. Moreover, The ENs exhibited appropriate antibacterial properties against Gram-positive and Gram-negative bacteria. In conclusion, borax can be used to improve the mechanical and biocompatibility features of the Ch/PVA-based ENs. Furthermore, it could be suggested that borax-included Ch/PVA ENs can exhibit high appropriate biological properties, candidate them as an appropriate scaffold in the field of tissue engineering. However, in vivo trials are needed to clearly their side effects and advantages.
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Affiliation(s)
- Mohammad Mahdian-Dehkordi
- Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Farshid Sarrafzadeh-Rezaei
- Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Mazdak Razi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
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Razzaq A, Khan ZU, Saeed A, Shah KA, Khan NU, Menaa B, Iqbal H, Menaa F. Development of Cephradine-Loaded Gelatin/Polyvinyl Alcohol Electrospun Nanofibers for Effective Diabetic Wound Healing: In-Vitro and In-Vivo Assessments. Pharmaceutics 2021; 13:pharmaceutics13030349. [PMID: 33799983 PMCID: PMC7998169 DOI: 10.3390/pharmaceutics13030349] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/24/2021] [Accepted: 03/04/2021] [Indexed: 01/12/2023] Open
Abstract
Diabetic wound infections caused by conventional antibiotic-resistant Staphylococcus aureus strains are fast emerging, leading to life-threatening situations (e.g., high costs, morbidity, and mortality) associated with delayed healing and chronic inflammation. Electrospinning is one of the most widely used techniques for the fabrication of nanofibers (NFs), induced by a high voltage applied to a drug-loaded polymer solution. Particular attention is given to electrospun NFs for pharmaceutical applications (e.g., original drug delivery systems) and tissue regeneration (e.g., as tissue scaffolds). However, there is a paucity of reports related to their application in diabetic wound infections. Therefore, we prepared eco-friendly, biodegradable, low-immunogenic, and biocompatible gelatin (GEL)/polyvinyl alcohol (PVA) electrospun NFs (BNFs), in which we loaded the broad-spectrum antibiotic cephradine (Ceph). The resulting drug-loaded NFs (LNFs) were characterized physically using ultraviolet-visible (UV-Vis) spectrophotometry (for drug loading capacity (LC), drug encapsulation efficiency (EE), and drug release kinetics determination), thermogravimetric analysis (TGA) (for thermostability evaluation), scanning electron microscopy (SEM) (for surface morphology analysis), and Fourier-transform infrared spectroscopy (FTIR) (for functional group identification). LNFs were further characterized biologically by in-vitro assessment of their potency against S. aureus clinical strains (N = 16) using the Kirby–Bauer test and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, by ex-vivo assessment to evaluate their cytotoxicity against primary human epidermal keratinocytes using MTT assay, and by in-vivo assessment to estimate their diabetic chronic wound-healing efficiency using NcZ10 diabetic/obese mice (N = 18). Thin and uniform NFs with a smooth surface and standard size (<400 nm) were observed by SEM at the optimized 5:5 (GEL:PVA) volumetric ratio. FTIR analyses confirmed the drug loading into BNFs. Compared to free Ceph, LNFs were significantly more thermostable and exhibited sustained/controlled Ceph release. LNFs also exerted a significantly stronger antibacterial activity both in-vitro and in-vivo. LNFs were significantly safer and more efficient for bacterial clearance-induced faster chronic wound healing. LNF-based therapy could be employed as a valuable dressing material to heal S. aureus-induced chronic wounds in diabetic subjects.
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Affiliation(s)
- Anam Razzaq
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; (A.R.); (K.A.S.); (N.U.K.)
| | - Zaheer Ullah Khan
- Department of Pharmacy, COMSATS Institute of Information and Technology, Abbottabad 22060, Pakistan;
| | - Aasim Saeed
- Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China;
| | - Kiramat Ali Shah
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; (A.R.); (K.A.S.); (N.U.K.)
| | - Naveed Ullah Khan
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; (A.R.); (K.A.S.); (N.U.K.)
| | - Bouzid Menaa
- Department of Nanomedicine and Advanced Technologies, California Innovations Corporation, San Diego, CA 92037, USA;
| | - Haroon Iqbal
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; (A.R.); (K.A.S.); (N.U.K.)
- Correspondence: or (H.I.); or (F.M.); Tel.: +86-130-1378-8566 (H.I.); +1-858-274-2728 (F.M.)
| | - Farid Menaa
- Department of Nanomedicine and Advanced Technologies, California Innovations Corporation, San Diego, CA 92037, USA;
- Correspondence: or (H.I.); or (F.M.); Tel.: +86-130-1378-8566 (H.I.); +1-858-274-2728 (F.M.)
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Estrada-Villegas GM, Del Río-De Vicente JI, Argueta-Figueroa L, González-Pérez G. UV-initiated crosslinking of electrospun chitosan/poly(ethylene oxide) nanofibers doped with ZnO-nanoparticles: development of antibacterial nanofibrous hydrogel. MRS COMMUNICATIONS 2020; 10:642-651. [PMID: 33398240 PMCID: PMC7773017 DOI: 10.1557/mrc.2020.74] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/21/2020] [Indexed: 06/12/2023]
Abstract
UNLABELLED UV-initiated crosslinking of electrospun poly(ethylene) oxide (PEO)/chitosan (CS) nanofibers doped with zinc oxide nanoparticles (ZnO-NPs) was performed using pentaerythritol triaclyrate (PETA) as the photoinitiator and crosslinker agent. The influence of the addition of PETA to the PEO/CS diameter and crosslinking of nanofibers was evaluated. The effect of irradiation time on the morphology and swelling properties of the crosslinked nanofibers were investigated. For ZnO-NPs, the minimum inhibitory concentrations were found at 1 mg/mL, and the minimum bactericidal concentrations at 2 mg/mL for all the strains tested. The nanofibrous hydrogel antibacterial effect was tested. This material enters the realm of fibrous hydrogels which have potential use in several applications as in the biomedical area. SUPPLEMENTARY MATERIAL The supplementary material for this article can be found at 10.1557/mrc.2020.74.
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Affiliation(s)
- G. M. Estrada-Villegas
- CONACyT — Centro de Investigación en Química Aplicada, Av. Alianza Sur 204 Parque de Innovación e Investigación Tecnológica, Apodaca, Nuevo León, 66629 Mexico
| | - J. I. Del Río-De Vicente
- CONACyT — Centro de Investigación en Química Aplicada, Av. Alianza Sur 204 Parque de Innovación e Investigación Tecnológica, Apodaca, Nuevo León, 66629 Mexico
| | - L. Argueta-Figueroa
- CONACyT — Facultad de Odontología, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca, 68120 Mexico
| | - G. González-Pérez
- Departamento de Ingeniería, Tecnológico Nacional de México, Instituto Tecnológico de Nuevo León, Av. Eloy Cavazos, # 2001 Colonia Tolteca, Guadalupe, Nuevo León, 67170 Mexico
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Ebrahimi L, Farzin A, Ghasemi Y, Alizadeh A, Goodarzi A, Basiri A, Zahiri M, Monabati A, Ai J. Metformin-Loaded PCL/PVA Fibrous Scaffold Preseeded with Human Endometrial Stem Cells for Effective Guided Bone Regeneration Membranes. ACS Biomater Sci Eng 2020; 7:222-231. [PMID: 33347290 DOI: 10.1021/acsbiomaterials.0c00958] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Many studies have been devoted to investigating the potential of guided bone regeneration (GBR) membranes for bone defect reconstruction. Regardless of approaches for treating damaged bone tissues, a beneficial therapeutic strategy has remained a challenge. In this study, a novel GBR membrane with polycaprolactone (PCL) and poly(vinyl alcohol) (PVA) containing different concentrations of metformin (Met) for improving osteogenic properties was developed. The membranes were evaluated for their hydrophilicity, degradation rate, swelling ratio, drug release, mechanical properties, and biological responses. The results showed a significant increase in hydrophilicity, swelling ratio, and degradation rate and no significant changes in mechanical properties of PCL/PVA membranes with Met concentration enhancement. A decrease in cell viability cultured on the surface of the PCL/PVA membrane was seen when the amount of Met was changed from 10 to 15 wt %. The results of the in vitro quantitative real-time polymerase chain reaction (qRT-PCR) also confirmed the higher secretion of osteogenic-related genes in a PCL/PVA/Cell/10 wt % Met scaffold than in the PCL/PVA/Cell sample. Therefore, further in vivo studies were conducted using the electrospun PCL/PVA membrane containing human endometrial stem cells (hEnSCs) and 10% Met. Histopathological and histomorphometric results confirmed that PCL/PVA/hEnSCs/10 wt % Met has excellent potential to differentiate hEnSCs into osteogenic lineages and bone regeneration in calvarial defects of rats. The results of this study confirm the high potential of the PCL/PVA/10 wt % Met fibrous membrane preseeded with hEnSCs in GBR applications.
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Affiliation(s)
- Lida Ebrahimi
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Fasa University of Medical Sciences, Fasa 7461686688, Iran.,Department of Tissue Engineering, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz 7134814336, Iran
| | - Ali Farzin
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 5546914177, Iran
| | - Younes Ghasemi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Science Research Center, Shiraz University of Medical Sciences, Shiraz 7146864685, Iran
| | - Aliakbar Alizadeh
- Department of Tissue Engineering, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz 7134814336, Iran
| | - Arash Goodarzi
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Fasa University of Medical Sciences, Fasa 7461686688, Iran
| | - Arefeh Basiri
- Department of Biomaterials and Tissue Engineering, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran
| | - Maria Zahiri
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr 7514633341, Iran.,Department of Anatomical Sciences, School of Medical Sciences, Bushehr University of Medical Sciences, Bushehr 7518759577, Iran
| | - Ahmad Monabati
- Department of Pathology and Hematology Science Research Center, Shiraz University of Medical Sciences, Shiraz 7134814336, Iran
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran 5546914177, Iran.,Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran 1449614535, Iran
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Fadil F, Adli FA, Affandi NDN, Harun AM, Alam MK. Dope-Dyeing of Polyvinyl Alcohol (PVA) Nanofibres with Remazol Yellow FG. Polymers (Basel) 2020; 12:polym12123043. [PMID: 33353189 PMCID: PMC7766049 DOI: 10.3390/polym12123043] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/07/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022] Open
Abstract
The lack of aesthetic properties of electrospun nanofibres in terms of colour appearance is the drive in this preliminary study. This research is conducted to study the dyeing behaviour and colorimetric properties of electrospun nanofibres blended with Remazol Yellow FG reactive dye using dope-dyeing method via electrospinning process. This paper reports the colorimetric properties of dyed poly vinyl alcohol (PVA) nanofibres within the range of 2.5 wt.% to 12.5 wt.% dye content. The electrospinning parameters were fixed at the electrospinning distance of 10 cm, constant feed rate of 0.5 mL/h and applied voltage of 15 kV. The resulting impregnated dye of 10 wt.% exhibits acceptable colour difference of dyed PVA nanofibres, with a mean fibre diameter of 177.1 ± 11.5 nm. The SEM micrographs show the effect of dye content on morphology and fibre diameter upon the increment of dye used. Further increase of dye content adversely affects the jet stability during the electrospinning, resulting in macroscopic dropping phenomenon. The presence of all prominent peaks of Remazol dye in the PVA nanofibers was supported with FTIR analysis. The addition of dye into the nanofibres has resulted in the enhancement of thermal stability of the PVA as demonstrated by TGA analysis.
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Affiliation(s)
- Fatirah Fadil
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (F.F.); (F.A.A.)
| | - Farah Atiqah Adli
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (F.F.); (F.A.A.)
| | - Nor Dalila Nor Affandi
- Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam 40450, Selangor, Malaysia; (F.F.); (F.A.A.)
- Correspondence:
| | - Ahmad Mukifza Harun
- Engineering Faculty, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia;
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Tsvetkov YE, Paulovičová E, Paulovičová L, Farkaš P, Nifantiev NE. Synthesis of Biotin-Tagged Chitosan Oligosaccharides and Assessment of Their Immunomodulatory Activity. Front Chem 2020; 8:554732. [PMID: 33335882 PMCID: PMC7736555 DOI: 10.3389/fchem.2020.554732] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 10/20/2020] [Indexed: 01/10/2023] Open
Abstract
Chitin, a polymer of β-(1→4)-linked N-acetyl-d-glucosamine, is one of the main polysaccharide components of the fungal cell wall. Its N-deacetylated form, chitosan, is enzymatically produced in the cell wall by chitin deacetylases. It exerts immunomodulative, anti-inflammatory, anti-cancer, anti-bacterial, and anti-fungal activities with various medical applications. To study the immunobiological properties of chitosan oligosaccharides, we synthesized a series of β-(1→4)-linked N-acetyl-d-glucosamine oligomers comprising 3, 5, and 7 monosaccharide units equipped with biotin tags. The key synthetic intermediate employed for oligosaccharide chain elongation, a disaccharide thioglycoside, was prepared by orthogonal glycosylation of a 4-OH thioglycoside acceptor with a glycosyl trichloroacetimidate bearing the temporary 4-O-tert-butyldimethylsilyl group. The use of silyl protection suppressed aglycon transfer and provided a high yield for the target disaccharide donor. Using synthesized chitosan oligomers, as well as previously obtained chitin counterparts, the immunobiological relationship between these synthetic oligosaccharides and RAW 264.7 cells was studied in vitro. Evaluation of cell proliferation, phagocytosis, respiratory burst, and Th1, Th2, Th17, and Treg polarized cytokine expression demonstrated effective immune responsiveness and immunomodulation in RAW 264.7 cells exposed to chitin- and chitosan-derived oligosaccharides. Macrophage reactivity was accompanied by significant inductive dose- and structure-dependent protective Th1 and Th17 polarization, which was greater with exposure to chitosan- rather than chitin-derived oligosaccharides. Moreover, no antiproliferative or cytotoxic effects were observed, even following prolonged 48 h exposure. The obtained results demonstrate the potent immunobiological activity of these synthetically prepared chito-oligosaccharides.
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Affiliation(s)
- Yury E. Tsvetkov
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Ema Paulovičová
- Cell Culture & Immunology Laboratory, Department of Immunochemistry of Glycoconjugates, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Lucia Paulovičová
- Cell Culture & Immunology Laboratory, Department of Immunochemistry of Glycoconjugates, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Pavol Farkaš
- Cell Culture & Immunology Laboratory, Department of Immunochemistry of Glycoconjugates, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Nikolay E. Nifantiev
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Polyvinyl Alcohol/Calcium Carbonate Nanocomposites as Efficient and Cost-Effective Cationic Dye Adsorbents. Polymers (Basel) 2020; 12:polym12102179. [PMID: 32987714 PMCID: PMC7598672 DOI: 10.3390/polym12102179] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/19/2020] [Accepted: 09/22/2020] [Indexed: 12/03/2022] Open
Abstract
A novel polyvinyl alcohol (PVA)/calcium carbonate-based double-layer cationic dye adsorbent was developed. Polyvinyl alcohol (50 wt %) and calcium carbonate (50 wt %) were used together with borax as a cross-linking agent. The nanocomposite was prepared using only water, without the need for any toxic solvent or hazardous chemical. The final samples were obtained by the solvent casting method. The nanocomposite adsorbent was characterized using a Fourier transform infrared (FTIR) spectroscope and a scanning electron microscope (SEM). The adsorption performance on two cationic dyes, i.e., methylene blue and safranin was studied. Dye adsorption was quantified by measuring the nanocomposite swelling, contact time, and dye concentration. Pseudo first-order and pseudo second-order kinetic models as well as intraparticle diffusion model were used to model the adsorption kinetics. Moreover, the isotherm dye adsorption was investigated by Langmuir and Freundlich models. The results revealed that the developed nanocomposite has relatively high adsorption efficiency and short adsorption time and retains its performance after several successive absorption–desorption processes. The results also showed that the pseudo-second-order model best describes the adsorption kinetics, and the Freundlich isotherm model has a better compatibility with the experimental data. Finally, an adsorption mechanism was proposed for the dye removal process. The developed PVA/CaCO3 nanocomposite can be potentially used for efficient dye removal in wastewater treatments.
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Abdullah Issa M, Z. Abidin Z. Sustainable Development of Enhanced Luminescence Polymer-Carbon Dots Composite Film for Rapid Cd 2+ Removal from Wastewater. Molecules 2020; 25:E3541. [PMID: 32756377 PMCID: PMC7436165 DOI: 10.3390/molecules25153541] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 11/18/2022] Open
Abstract
As a remedy for environmental pollution, a versatile synthetic approach has been developed to prepare polyvinyl alcohol (PVA)/nitrogen-doped carbon dots (CDs) composite film (PVA-CDs) for removal of toxic cadmium ions. The CDs were first synthesized using carboxymethylcellulose (CMC) of oil palms empty fruit bunch wastes with the addition of polyethyleneimine (PEI) and then the CDs were embedded with PVA. The PVA-CDs film possess synergistic functionalities through increasing the content of hydrogen bonds for chemisorption compared to the pure CDs. Optical analysis of PVA-CDs film was performed by ultraviolet-visible and fluorescence spectroscopy. Compared to the pure CDs, the solid-state PVA-CDs displayed a bright blue color with a quantum yield (QY) of 47%; they possess excitation-independent emission and a higher Cd2+ removal efficiency of 91.1%. The equilibrium state was achieved within 10 min. It was found that adsorption data fit well with the pseudo-second-order kinetic and Langmuir isotherm models. The maximum adsorption uptake was 113.6 mg g-1 at an optimal pH of 7. Desorption experiments showhe that adsorbent can be reused fruitfully for five adsorption-desorption cycles using 0.1 HCl elution. The film was successfully applied to real water samples with a removal efficiency of 95.34% and 90.9% for tap and drinking water, respectively. The fabricated membrane is biodegradable and its preparation follows an ecofriendly green route.
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Affiliation(s)
- Mohammed Abdullah Issa
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
| | - Zurina Z. Abidin
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
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Nour-Eldeen G, Abdel-Rasheed M, El-Rafei AM, Azmy O, El-Bassyouni GT. Adipose tissue-derived mesenchymal stem cells and chitosan/poly (vinyl alcohol) nanofibrous scaffolds for cartilage tissue engineering. CELL REGENERATION (LONDON, ENGLAND) 2020; 9:7. [PMID: 32588202 PMCID: PMC7306832 DOI: 10.1186/s13619-020-00045-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/27/2020] [Indexed: 12/12/2022]
Abstract
Osteoarthritis (OA) has been defined as a chronic inflammatory joint disease characterized by progressive articular cartilage degeneration. Recently growing interest in regenerative medicine, using cell therapy and tissue engineering, where cellular components in combination with engineered scaffolds and bioactive materials were used to induce functional tissue regeneration. In the present study, nanofibrous scaffold based on chitosan (CS)/poly (vinyl alcohol) (PVA) were used to develop biologically functionalized biomaterial to mimic the extracellular matrix, allowing the human adipose tissue derived mesenchymal stem cells (ADSCs) to proliferate and differentiate to chondrogenic cells. The morphology of the nanofibrous mat was examined using field emission scanning electron microscope (FE/SEM). The characteristic functional groups and the nature of the chemical bonds between atoms were evaluated using Fourier transform infrared spectroscopy (FTIR) spectrum. Characterization of the seeded cells was morphologically evaluated by scanning electron microscopy and by flow cytometry for the expression of the stem cell surface markers. The differentiation potential was verified after chondrogenic induction by analyzing the expression of chondrogenic marker genes using real-time (RT PCR). Current study suggest significant potential for the use of ADSCs with the nanofibrous scaffolds in improving the osteoarthritis pathology.
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Affiliation(s)
- Ghada Nour-Eldeen
- Molecular Genetics and Enzymology Department, National Research Centre, Dokki, Cairo, 12622, Egypt.,Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, 12622, Egypt
| | - Mazen Abdel-Rasheed
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, 12622, Egypt. .,Reproductive Health Research Department, National Research Centre, 33 El-Buhouth St, Dokki, Cairo, 12622, Egypt.
| | - Amira M El-Rafei
- Refractories, Ceramics and Building Materials Department, National Research Centre, Dokki, Cairo, 12622, Egypt
| | - Osama Azmy
- Stem Cell Research group, Medical Research Centre of Excellence, National Research Centre, Cairo, 12622, Egypt.,Reproductive Health Research Department, National Research Centre, 33 El-Buhouth St, Dokki, Cairo, 12622, Egypt
| | - Gehan T El-Bassyouni
- Refractories, Ceramics and Building Materials Department, National Research Centre, Dokki, Cairo, 12622, Egypt
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Functional Micro- and Nanofibers Obtained by Nonwoven Post-Modification. Polymers (Basel) 2020; 12:polym12051087. [PMID: 32397603 PMCID: PMC7285086 DOI: 10.3390/polym12051087] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/29/2020] [Accepted: 05/06/2020] [Indexed: 12/14/2022] Open
Abstract
Micro- and nanofibers are historically-known materials that are continuously reinvented due to their valuable properties. They display promise for applications in many fields, from tissue engineering to catalysis or sensors. In the first application, micro- and nanofibers are mainly produced from a limited library of biomaterials with properties that need alteration before use. Post-modification is a very effective method for attaining on-demand features and functions of nonwovens. This review summarizes and presents methods of functionalization of nonwovens produced by electrostatic means. The reviewed modifications are grouped into physical methods, chemical modification, and mixed methods.
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Abbas WA, Sharafeldin IM, Omar MM, Allam NK. Novel mineralized electrospun chitosan/PVA/TiO 2 nanofibrous composites for potential biomedical applications: computational and experimental insights. NANOSCALE ADVANCES 2020; 2:1512-1522. [PMID: 36132310 PMCID: PMC9419788 DOI: 10.1039/d0na00042f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 02/24/2020] [Indexed: 05/29/2023]
Abstract
Electrospun nanofibrous materials serve as potential solutions for several biomedical applications as they possess the ability of mimicking the extracellular matrix (ECM) of tissues. Herein, we report on the fabrication of novel nanostructured composite materials for potential use in biomedical applications that require a suitable environment for cellular viability. Anodized TiO2 nanotubes (TiO2 NTs) in powder form, with different concentrations, were incorporated as a filler material into a blend of chitosan (Cs) and polyvinyl alcohol (PVA) to synthesize composite polymeric electrospun nanofibrous materials. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nanoindentation, Brunauer-Emmett-Teller (BET) analysis, and MTT assay for cell viability techniques were used to characterize the architectural, structural, mechanical, physical, and biological properties of the fabricated materials. Additionally, molecular dynamics (MD) modelling was performed to evaluate the mechanical properties of the polymeric PVA/chitosan matrix upon reinforcing the structure with TiO2 anatase nanotubes. The Young's modulus, shear and bulk moduli, Poisson's ratio, Lame's constants, and compressibility of these composites have been computed using the COMPASS molecular mechanics force fields. The MD simulations demonstrated that the inclusion of anatase TiO2 improves the mechanical properties of the composite, which is consistent with our experimental findings. The results revealed that the mineralized material improved the mechanical strength and the physical properties of the composite. Hence, the composite material has potential for use in biomedical applications.
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Affiliation(s)
- Walaa A Abbas
- Energy Materials Laboratory (EML), School of Sciences and Engineering (SSE), The American University in Cairo (AUC) New Cairo 11835 Egypt
| | - Icell M Sharafeldin
- Energy Materials Laboratory (EML), School of Sciences and Engineering (SSE), The American University in Cairo (AUC) New Cairo 11835 Egypt
| | - Mostafa M Omar
- Energy Materials Laboratory (EML), School of Sciences and Engineering (SSE), The American University in Cairo (AUC) New Cairo 11835 Egypt
| | - Nageh K Allam
- Energy Materials Laboratory (EML), School of Sciences and Engineering (SSE), The American University in Cairo (AUC) New Cairo 11835 Egypt
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Aman RM, Abu Hashim II, Meshali MM. Novel Clove Essential Oil Nanoemulgel Tailored by Taguchi's Model and Scaffold-Based Nanofibers: Phytopharmaceuticals with Promising Potential as Cyclooxygenase-2 Inhibitors in External Inflammation. Int J Nanomedicine 2020; 15:2171-2195. [PMID: 32280213 PMCID: PMC7125334 DOI: 10.2147/ijn.s246601] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/07/2020] [Indexed: 01/18/2023] Open
Abstract
PURPOSE Clove essential oil is a phytochemical possessing a vast array of biological activities. Nevertheless, fabricating nano topical delivery systems targeted to augment the anti-inflammatory activity of the oil has not been investigated so far. Accordingly, in this study, controlled release nanoparticulate systems, namely nanoemulgel and nanofibers (NFs), of the oil were developed to achieve such goal. METHODS The nanoemulsion was incorporated in the hydrogel matrix of mixed biopolymers - chitosan, guar gum and gum acacia - to formulate nanoemulsion-based nanoemulgel. Taguchi's model was adopted to evaluate the effect of independently controlled parameters, namely, the concentration of chitosan (X1), guar gum (X2), and gum acacia (X3) on different dependently measured parameters. Additionally, the nanoemulsion-based NFs were prepared by the electrospinning technique using polyvinyl alcohol (PVA) polymer. Extensive in vitro, ex vivo and in vivo evaluations of the aforementioned formulae were conducted. RESULTS Both Fourier transform-infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC) established the complete dispersion of the nanoemulsion in the polymeric matrices of the prepared nanoemulgel and NFs. The ex vivo skin permeation data of clove essential oil from the prepared formulations showed that NFs can sustain its penetration through the skin comparably with nanoemulgel. Topical treatment with NFs (once application) and nanoemulgel (twice application) evoked a marvelous in vivo anti-inflammatory activity against croton oil-induced mouse skin inflammation model when compared with pure clove essential oil along with relatively higher efficacy of medicated NFs than that of medicated nanoemulgel. Such prominent anti-inflammatory activity was affirmed by histopathological and immunohistochemical examinations. CONCLUSION These results indicated that nanoemulsion-based nanoemulgel and nanoemulsion-based NFs could be introduced to the phytomedicine field as promising topical delivery systems for effective treatment of inflammatory diseases instead of nonsteroidal anti-inflammatory drugs that possess adverse effects.
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Affiliation(s)
- Reham Mokhtar Aman
- Department of Pharmaceutics, Faculty of Pharmacy, Mansoura University, Mansoura35516, Egypt
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Abdallah OM, EL-Baghdady KZ, Khalil MMH, El Borhamy MI, Meligi GA. Antibacterial, antibiofilm and cytotoxic activities of biogenic polyvinyl alcohol-silver and chitosan-silver nanocomposites. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02050-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Elshishiny F, Mamdouh W. Fabrication of Nanofibrous/Xerogel Layer-by-Layer Biocomposite Scaffolds for Skin Tissue Regeneration: In Vitro Study. ACS OMEGA 2020; 5:2133-2147. [PMID: 32064374 PMCID: PMC7016933 DOI: 10.1021/acsomega.9b02832] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Skin burn wounds are a crucial issue that could reduce life quality. Although numerous effective skin products have invaded the biomedical market, most of them still demonstrate some limitations regarding their porosity, swelling and degradation behaviors, antibacterial properties, and cytotoxicity. Thus, the aim of this study is to fabricate novel trilayered asymmetric porous scaffolds that can mimic the natural skin layers. In particular, the fabricated scaffold constitutes an upper electrospun chitosan-poly(vinyl alcohol) layer and a lower xerogel layer, which is made of effective skin extracellular matrix components. Both layers are fixed together using fibrin glue as a middle layer. The results of this study revealed promising scaffold swelling capability suitable for absorbing wound exudates, followed by a constant degradable weight over time, which is appropriate for a burn wound environment. Scanning electron microscopy images revealed an average pore diameter in the range of 138.39-170.18 nm for the cross-linked electrospun mats and an average pore size of 2.29-30.62 μm for the fabricated xerogel layers. This further provided an optimum environment for fibroblast migration and proliferation. The electrospun nanofibrous layer was examined for its antibacterial properties and showed expressive complete bacterial inhibition against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacterial strains (log reduction = 3 and 2.70, respectively). Next, mouse embryonic fibroblast cytotoxicity and migration rate were investigated against the developed asymmetrical composite to assess its biocompatibility. Tissue culture experiments demonstrated significant cell proliferation and migration in the presence of the constructed scaffold (P < 0.0001). A complete wound closure was observed in vitro in the presence of the three scaffold asymmetrical layers against the mouse embryonic fibroblast. The results of this study proved superior biological characteristics of the innovative asymmetrical composite that could further replace the burned or damaged skin layers with promising potential for clinical applications.
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Affiliation(s)
| | - Wael Mamdouh
- E-mail: . Tel: +202
2615 2555. Fax: +202 2797 4951
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Teixeira MA, Amorim MTP, Felgueiras HP. Poly(Vinyl Alcohol)-Based Nanofibrous Electrospun Scaffolds for Tissue Engineering Applications. Polymers (Basel) 2019; 12:polym12010007. [PMID: 31861485 PMCID: PMC7023576 DOI: 10.3390/polym12010007] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/21/2019] [Accepted: 12/12/2019] [Indexed: 01/27/2023] Open
Abstract
Tissue engineering (TE) holds an enormous potential to develop functional scaffolds resembling the structural organization of native tissues, to improve or replace biological functions and prevent organ transplantation. Amongst the many scaffolding techniques, electrospinning has gained widespread interest because of its outstanding features that enable the production of non-woven fibrous structures with a dimensional organization similar to the extracellular matrix. Various polymers can be electrospun in the form of three-dimensional scaffolds. However, very few are successfully processed using environmentally friendly solvents; poly(vinyl alcohol) (PVA) is one of those. PVA has been investigated for TE scaffolding production due to its excellent biocompatibility, biodegradability, chemo-thermal stability, mechanical performance and, most importantly, because of its ability to be dissolved in aqueous solutions. Here, a complete overview of the applications and recent advances in PVA-based electrospun nanofibrous scaffolds fabrication is provided. The most important achievements in bone, cartilage, skin, vascular, neural and corneal biomedicine, using PVA as a base substrate, are highlighted. Additionally, general concepts concerning the electrospinning technique, the stability of PVA when processed, and crosslinking alternatives to glutaraldehyde are as well reviewed.
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Prudkin-Silva C, Pérez OE, Martínez KD, Barroso da Silva FL. Combined Experimental and Molecular Simulation Study of Insulin–Chitosan Complexation Driven by Electrostatic Interactions. J Chem Inf Model 2019; 60:854-865. [DOI: 10.1021/acs.jcim.9b00814] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Cecilia Prudkin-Silva
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, IQUIBICEN-CONICET, Universidad de Buenos Aires, Buenos Aires, Intendente Güiraldes, s/n, Ciudad Universitaria, Pabellón 2, Buenos Aires CP 1428, Argentina
| | - Oscar E. Pérez
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, IQUIBICEN-CONICET, Universidad de Buenos Aires, Buenos Aires, Intendente Güiraldes, s/n, Ciudad Universitaria, Pabellón 2, Buenos Aires CP 1428, Argentina
| | - Karina D. Martínez
- Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigación Científica y Técnicas de la República Argentina, ITAPROQ-CONICET, Universidad de Buenos Aires, Intendente Güiraldes, s/n, Ciudad Universitaria, Buenos Aires CP 1428, Argentina
| | - Fernando L. Barroso da Silva
- Departamento de Ciências Biomoleculares, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, 14040-903 Brazil
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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Asadpour S, Yeganeh H, Khademi F, Ghanbari H, Ai J. Resveratrol-loaded polyurethane nanofibrous scaffold: viability of endothelial and smooth muscle cells. Biomed Mater 2019; 15:015001. [DOI: 10.1088/1748-605x/ab4e23] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Phan TTV, Huynh TC, Oh J. Photothermal Responsive Porous Membrane for Treatment of Infected Wound. Polymers (Basel) 2019; 11:E1679. [PMID: 31615133 PMCID: PMC6835234 DOI: 10.3390/polym11101679] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/07/2019] [Accepted: 10/12/2019] [Indexed: 12/31/2022] Open
Abstract
Wound infection is a big issue of modern medicine because of multi-drug resistance bacteria; thus, developing an advanced therapy is curial. Photothermal therapy (PTT) is a newly noninvasive strategy that employs PTT agents to transfer near-infrared (NIR) light energy into heat to kill bacterial pathogens. In this work, the PTT agent-containing dressing was developed for the first time to treat the wound infection. Palladium nanoparticles (PdNPs) were chosen as PTT agents because of their high stability, good biocompatibility, excellent photothermal property, and simple-green preparation. With the flexibility and wettability, highly porous membrane chitosan/polyvinyl alcohol (CS/PVA) membrane was chosen as the dressing. The prepared wound dressings exhibited excellent biocompatibility, high porosity, a high degree of swelling, high moisture retention, and high photothermal performance. The treatment of PdNPs loading CS/PVA dressing (CS/PVA/Pd) and laser irradiation killed most of the bacteria in vitro. The proposed PTT agent containing wound dressing introduces a novel strategy for the treatment of wound infection.
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Affiliation(s)
- Thi Tuong Vy Phan
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Hai Chau, Danang 550000, Vietnam;
| | - Thanh-Canh Huynh
- Center for Construction, Mechanics and Materials, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Hai Chau, Danang 550000, Vietnam;
| | - Junghwan Oh
- Center for Marine-Integrated Biomedical Technology, Pukyong National University, Busan 48513, Korea
- Department of Biomedical Engineering, Pukyong National University, Busan 48513, Korea
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