1
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Teba HE, Khalil IA, Gebreel RM, Fahmy LI, Sorogy HME. Development of antifungal fibrous ocular insert using freeze-drying technique. Drug Deliv Transl Res 2024; 14:2520-2538. [PMID: 38366116 PMCID: PMC11291584 DOI: 10.1007/s13346-024-01527-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2024] [Indexed: 02/18/2024]
Abstract
Candida species is one of the pathogenic fungi of the eye responsible for keratitis that frequently causes vision impairment and blindness. Effective treatment requires long-term use of antifungal drugs, which is opposed by the defensive mechanisms of the eye and inadequate corneal penetration. The objective of this study was to develop a carrier for prolonged ocular application of fluconazole (FLZ) to treat keratitis. FLZ was encapsulated into chitosan fibrous matrices (F1-F4) using different chitosan concentrations (0.02, 0.1, 0.5, and 1%w/v, respectively) by freeze-drying as a single-step technique. Studying the morphology and surface properties of the inserts revealed a porous matrix with fibrous features with a large surface area. Thermal stability and chemical compatibility were confirmed by DSC/TGA/DTA and FT-IR, respectively. Loading capacity (LC) and entrapment efficiency (EE) were determined. According to the in vitro release study, F4 (0.11 mg mg-1 LC and 87.53% EE) was selected as the optimum insert because it had the most sustained release, with 15.85% burst release followed by 75.62% release within 12 h. Ex vivo corneal permeation study revealed a 1.2-fold increase in FLZ permeation from F4 compared to FLZ aqueous solution. Also, in the in vivo pharmacokinetic study in rabbits, F4 increased the AUC0-8 of FLZ by 9.3-fold and its concentration in aqueous humor was maintained above the MIC through the experimentation time. Studies on cytotoxicity (MTT assay) provide evidence for the safety and biocompatibility of F4. Therefore, the freeze-dried FLZ-loaded chitosan fibrous insert could be a promising candidate for treating ocular keratitis.
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Affiliation(s)
- Hoda E Teba
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt
| | - Islam A Khalil
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt
| | - Rana M Gebreel
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt
| | - Lamiaa I Fahmy
- Department of Microbiology and Immunology, Faculty of Pharmacy, October University for Modern Sciences and Arts, 12451, 6th of October, Giza, Egypt
| | - Heba M El Sorogy
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Misr University for Science and Technology, 12566, 6th of October, Giza, Egypt.
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2
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Uzel E, Durgun ME, Esentürk-Güzel İ, Güngör S, Özsoy Y. Nanofibers in Ocular Drug Targeting and Tissue Engineering: Their Importance, Advantages, Advances, and Future Perspectives. Pharmaceutics 2023; 15:pharmaceutics15041062. [PMID: 37111550 PMCID: PMC10145046 DOI: 10.3390/pharmaceutics15041062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
Nanofibers are frequently encountered in daily life as a modern material with a wide range of applications. The important advantages of production techniques, such as being easy, cost effective, and industrially applicable are important factors in the preference for nanofibers. Nanofibers, which have a broad scope of use in the field of health, are preferred both in drug delivery systems and tissue engineering. Due to the biocompatible materials used in their construction, they are also frequently preferred in ocular applications. The fact that they have a long drug release time as a drug delivery system and have been used in corneal tissue studies, which have been successfully developed in tissue engineering, stand out as important advantages of nanofibers. This review examines nanofibers, their production techniques and general information, nanofiber-based ocular drug delivery systems, and tissue engineering concepts in detail.
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Affiliation(s)
- Egemen Uzel
- Institute of Graduate Studies in Health Sciences, Istanbul University, Istanbul 34010, Türkiye
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
| | - Meltem Ezgi Durgun
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
| | - İmren Esentürk-Güzel
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul 34668, Türkiye
| | - Sevgi Güngör
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
| | - Yıldız Özsoy
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul 34126, Türkiye
- Correspondence: ; Tel.: +90-212-4400000 (ext. 13498)
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3
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Huang H, Trentle M, Liu Z, Xiang K, Higgins W, Wang Y, Xue B, Yang S. Polymer Complex Fiber: Property, Functionality, and Applications. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7639-7662. [PMID: 36719982 DOI: 10.1021/acsami.2c19583] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Polymer complex fibers (PCFs) are a novel kind of fiber material processed from polymer complexes that are assembled through noncovalent interactions. These can realize the synergy of functional components and miscibility on the molecular level. The dynamic character of noncovalent interactions endows PCFs with remarkable properties, such as reversibility, stimuli responsiveness, self-healing, and recyclability, enabling them to be applied in multidisciplinary fields. The objective of this article is to provide a review of recent progress in the field of PCFs. The classification based on chain interactions will be first introduced followed by highlights of the fabrication technologies and properties of PCFs. The effects of composition and preparation method on fiber properties are also discussed, with some emphasis on utilizing these for rational design. Finally, we carefully summarize recent advanced applications of PCFs in the fields of energy storage and sensors, water treatment, biomedical materials, artificial actuators, and biomimetic platforms. This review is expected to deepen the comprehension of PCF materials and open new avenues for developing PCFs with tailor-made properties for advanced application.
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Affiliation(s)
- Hao Huang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai201620, P. R. China
| | - Miranda Trentle
- Department of Chemistry, The University of Alabama at Birmingham, Birmingham, Alabama35294, United States
| | - Zexin Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai201620, P. R. China
| | - Kehui Xiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai201620, P. R. China
| | - William Higgins
- Department of Chemistry, The University of Alabama at Birmingham, Birmingham, Alabama35294, United States
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials and College of Biomedical Engineering, Sichuan University, Chengdu610064, P. R. China
| | - Bing Xue
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai201620, P. R. China
| | - Shuguang Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai201620, P. R. China
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4
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Sans J, Arnau M, Roa JJ, Turon P, Alemán C. Tailorable Nanoporous Hydroxyapatite Scaffolds for Electrothermal Catalysis. ACS APPLIED NANO MATERIALS 2022; 5:8526-8536. [PMID: 36910876 PMCID: PMC9989946 DOI: 10.1021/acsanm.2c01915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Polarized hydroxyapatite (HAp) scaffolds with customized architecture at the nanoscale have been presented as a green alternative to conventional catalysts used for carbon and dinitrogen fixation. HAp printable inks with controlled nanoporosity and rheological properties have been successfully achieved by incorporating Pluronic hydrogel. Nanoporous scaffolds with good mechanical properties, as demonstrated by means of the nanoindentation technique, have been obtained by a sintering treatment and the posterior thermally induced polarization process. Their catalytic activity has been evaluated by considering three different key reactions (all in the presence of liquid water): (1) the synthesis of amino acids from gas mixtures of N2, CO2, and CH4; (2) the production of ethanol from gas mixtures of CO2 and CH4; and (3) the synthesis of ammonia from N2 gas. Comparison of the yields obtained by using nanoporous and nonporous (conventional) polarized HAp catalysts shows that both the nanoporosity and water absorption capacity of the former represent a drawback when the catalytic reaction requires auxiliary coating layers, as for example for the production of amino acids. This is because the surface nanopores achieved by incorporating Pluronic hydrogel are completely hindered by such auxiliary coating layers. On the contrary, the catalytic activity improves drastically for reactions in which the HAp-based scaffolds with enhanced nanoporosity are used as catalysts. More specifically, the carbon fixation from CO2 and CH4 to yield ethanol improves by more than 3000% when compared with nonporous HAp catalyst. Similarly, the synthesis of ammonia by dinitrogen fixation increases by more than 2000%. Therefore, HAp catalysts based on nanoporous scaffolds exhibit an extraordinary potential for scalability and industrial utilization for many chemical reactions, enabling a feasible green chemistry alternative to catalysts based on heavy metals.
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Affiliation(s)
- Jordi Sans
- Departament
d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
| | - Marc Arnau
- Departament
d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
| | - Joan Josep Roa
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- CIEFMA-Departament
de Ciència i Eng. de Materials, Universitat
Politècnica de Catalunya, Eduard Maristany 10-14, Ed. I, 08019 Barcelona, Spain
| | - Pau Turon
- B.
Braun Surgical, S.A.U. Carretera de Terrassa 121 Rubí, 08191 Barcelona, Spain
| | - Carlos Alemán
- Departament
d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Barcelona
Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/Eduard Maristany, 10-14, 08019 Barcelona, Spain
- Institute
for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Baldiri Reixac 10-12, 08028 Barcelona, Spain
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5
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Rezaei FS, Sharifianjazi F, Esmaeilkhanian A, Salehi E. Chitosan films and scaffolds for regenerative medicine applications: A review. Carbohydr Polym 2021; 273:118631. [PMID: 34561021 DOI: 10.1016/j.carbpol.2021.118631] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 01/01/2023]
Abstract
Over the last years, chitosan has demonstrated unparalleled characteristics for regenerative medicine applications. Beside excellent antimicrobial and wound healing properties, this polysaccharide biopolymer offers favorable characteristics such as biocompatibility, biodegradability, and film and fiber-forming capabilities. Having plentiful active amine groups, chitosan can be also readily modified to provide auxiliary features for growing demands in regenerative medicine, which is constantly confronted with new problems, necessitating the creation of biocompatible, immunogenic and biodegradable film/scaffold composites. A new look at the chitosan composites structure/activity/application tradeoff is the primary focus of the current review, which can help researchers to detect the bottlenecks and overcome the shortcomings that arose from this intersection. In the current review, the most recent advances in chitosan films and scaffolds in terms of preparation techniques and modifying methods for improving their functional properties, in three major biomedical fields i.e., tissue engineering, wound healing, and drug delivery are surveyed and discussed.
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Affiliation(s)
- Farnoush Sadat Rezaei
- Department of Chemical Engineering, Faculty of Engineering, Amir Kabir University, Tehran, Iran
| | - Fariborz Sharifianjazi
- Department of Mining and Metallurgical Engineering, Faculty of Engineering, Amir Kabir University, Tehran, Iran
| | - Amirhossein Esmaeilkhanian
- Department of Mining and Metallurgical Engineering, Faculty of Engineering, Amir Kabir University, Tehran, Iran
| | - Ehsan Salehi
- Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-88349, Iran.
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6
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Sivanesan I, Gopal J, Muthu M, Shin J, Oh JW. Reviewing Chitin/Chitosan Nanofibers and Associated Nanocomposites and Their Attained Medical Milestones. Polymers (Basel) 2021; 13:2330. [PMID: 34301087 PMCID: PMC8309474 DOI: 10.3390/polym13142330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 11/25/2022] Open
Abstract
Chitin/chitosan research is an expanding field with wide scope within polymer research. This topic is highly inviting as chitin/chitosan's are natural biopolymers that can be recovered from food waste and hold high potentials for medical applications. This review gives a brief overview of the chitin/chitosan based nanomaterials, their preparation methods and their biomedical applications. Chitin nanofibers and Chitosan nanofibers have been reviewed, their fabrication methods presented and their biomedical applications summarized. The chitin/chitosan based nanocomposites have also been discussed. Chitin and chitosan nanofibers and their binary and ternary composites are represented by scattered superficial reports. Delving deep into synergistic approaches, bringing up novel chitin/chitosan nanocomposites, could help diligently deliver medical expectations. This review highlights such lacunae and further lapses in chitin related inputs towards medical applications. The grey areas and future outlook for aligning chitin/chitosan nanofiber research are outlined as research directions for the future.
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Affiliation(s)
- Iyyakkannu Sivanesan
- Department of Bioresources and Food Science, Konkuk University, Seoul 143-701, Korea;
| | - Judy Gopal
- Laboratory of Neo Natural Farming, Chunnampet 603 401, Tamil Nadu, India; (J.G.); (M.M.)
| | - Manikandan Muthu
- Laboratory of Neo Natural Farming, Chunnampet 603 401, Tamil Nadu, India; (J.G.); (M.M.)
| | - Juhyun Shin
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 143-701, Korea;
| | - Jae-Wook Oh
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 143-701, Korea;
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7
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An Overview of the Design of Chitosan-Based Fiber Composite Materials. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5060160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Chitosan composite fibrous materials continue to generate significant interest for wastewater treatment, food packaging, and biomedical applications. This relates to the relatively high surface area and porosity of such fibrous chitosan materials that synergize with their unique physicochemical properties. Various methods are involved in the preparation of chitosan composite fibrous materials, which include the modification of the biopolymer that serve to alter the solubility of chitosan, along with post-treatment of the composite materials to improve the water stability or to achieve tailored functional properties. Two promising methods to produce such composite fibrous materials involve freeze-drying and electrospinning. Future developments of such composite fibrous materials demands an understanding of the various modes of preparation and methods of structural characterization of such materials. This review contributes to an understanding of the structure–property relationships of composite fibrous materials that contain chitosan, along with an overview of recent advancements concerning their preparation.
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8
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Fabrication of guar gum-gelatin scaffold for soft tissue engineering. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2020. [DOI: 10.1016/j.carpta.2020.100006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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9
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Selviler-Sizer S, Kabak YB, Kabak M. Telocytes in the hearts of Saanen goats. Microsc Res Tech 2020; 84:548-554. [PMID: 33017500 DOI: 10.1002/jemt.23612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/10/2020] [Accepted: 09/19/2020] [Indexed: 12/21/2022]
Abstract
Telocytes, new interstitial cells that have received significant attention in recent years, have been detected in many organs, including the heart. The distinction between telocytes and other interstitial cells can only be made based on their ultrastructural characterization and immunophenotypic features. In this study, we examined the interstitial cells in the healthy heart tissues of Saanen goats to determine whether they are telocytes or not, by using a scanning electron microscope (SEM) and immunohistochemical and immunofluorescence staining methods. The SEM revealed oval and round telocytes with two to four telopodes. Some telopodes also had podoms. The staining for immunohistochemical and immunofluorescence methods used for CD34, c-kit (CD117), and vimentin antibodies. Positive cells were detected in the heart muscle and heart valves by immunohistochemical staining. As these antigens can also be expressed by other non-telocyte cells, we used double immunofluorescence staining with CD34/c-kit and CD34/vimentin antibodies to identify true telocytes. Telocytes were determined in the right atrium and aortic valve. While telocytes were CD34+/c-kit+ and CD34+/vimentin+, fibroblasts were CD34-/vimentin+. These results confirm the presence of telocytes in the hearts of Saanen goats.
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Affiliation(s)
- Sedef Selviler-Sizer
- Department of Anatomy, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Yonca Betil Kabak
- Department of Pathology, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Murat Kabak
- Department of Anatomy, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey
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10
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Chen Y, Liu Y, Xing T, Sun B, Feng Z, Li P, Yang Z, Li S, Chen S. Effects of salt concentration on the structure and properties of composite fiber of carboxymethyl cellulose/N-2-hydroxylpropyl trimethyl ammonium chloride chitosan prepared by polyelectoyte complexation-freeze drying. Int J Biol Macromol 2020; 151:1030-1039. [PMID: 31760008 DOI: 10.1016/j.ijbiomac.2019.11.123] [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] [Received: 09/14/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 12/19/2022]
Abstract
The conventional electrospinning process for the preparation of fibers usually require complex equipment and complicated preparation processes, as well as chemical crosslinkers and organic solvents, which limits its application in the preparation of biomedical materials. In the current study, carboxymethyl cellulose/N-2-hydroxylpropyl trimethyl ammonium chloride chitosan (CMC/HACC) composite fibers were fabricated by polyelectrolyte complexation (PEC) and freeze drying coupled method in both pure water and NaCl solution. The structures of the as-prepared fibers and the effects of NaCl concentration on the structures of fibers were studied by FTIR, solid 13C NMR, XRD, XPS and SEM. The formation mechanism of the composite fiber and the effects of NaCl concentration on structure and properties of the composite fiber were simulated in the Materials Studio software and discussed. The swelling properties and the thermal decomposition kinetics of the composite fiber were studied. The results suggest that the addition of NaCl electrolyte to the complexing system significantly affects the structure and properties of the PEC fiber. Our work has provided a new preparation route to the composite fibers of natural polymers with controllable structures and properties by the combination of PEC and freeze drying techniques using NaCl with desired concentration as the electrolyte.
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Affiliation(s)
- Yu Chen
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
| | - Yang Liu
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Tao Xing
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China; Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Boyang Sun
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China; Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Zhipan Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Puwang Li
- Agriculture Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, PR China
| | - Ziming Yang
- Agriculture Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, PR China
| | - Sidong Li
- School of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524001, PR China
| | - Shusen Chen
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
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11
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de Farias BS, Sant'Anna Cadaval Junior TR, de Almeida Pinto LA. Chitosan-functionalized nanofibers: A comprehensive review on challenges and prospects for food applications. Int J Biol Macromol 2019; 123:210-220. [DOI: 10.1016/j.ijbiomac.2018.11.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/05/2018] [Accepted: 11/08/2018] [Indexed: 12/22/2022]
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12
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Diaz A, Zhang Z, Lee B, Luna FMH, Li Sip YY, Lu X, Heidings J, Tetard L, Zhai L, Kang H. Evaluation of Single Hydrogel Nanofiber Mechanics Using Persistence Length Analysis. ACS OMEGA 2018; 3:18304-18310. [PMID: 31458407 PMCID: PMC6643519 DOI: 10.1021/acsomega.8b02822] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/13/2018] [Indexed: 06/10/2023]
Abstract
Polyelectrolyte hydrogel fibers can mimic the extracellular matrix and be used for tissue scaffolding. Mechanical properties of polyelectrolyte nanofibers are crucial in manipulating cell behavior, which metal ions have been found to enable tuning. While metal ions play an important role in manipulating the mechanical properties of the fibers, evaluating the mechanical properties of a single hydrated hydrogel fiber remains a challenging task and a more detailed understanding of how ions modulate the mechanical properties of individual polyelectrolyte polymers is still lacking. In this study, dark-field microscopy and persistence length analysis help directly evaluate fiber mechanics using electrospun fibers of poly(acrylic acid) (PAA), chitosan (CS), and ferric ions as a model system. By comparing the persistence length and estimated Young's modulus of different nanofibers, we demonstrate that persistence length analysis is a viable approach to evaluate mechanical properties of hydrated fibers. Ferric ions were found to create shorter and stiffer nanofibers, with Young's modulus estimated at a few kilopascals. Ferric ions, at low concentration, reduce the Young's modulus of PAA and PAA/CS fibers through the interaction between ferric ions and carboxylate groups. Such interaction was further supported by nanoscale infrared spectroscopy studies of PAA and PAA/CS fibers with different concentrations of ferric ions.
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Affiliation(s)
- Angie
M. Diaz
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
| | - Zeyang Zhang
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
- Department of Chemistry and Department of
Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Briana Lee
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
| | - Felix M. Hernandez Luna
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
- Department
of Mechanical Engineering, Inter American
University of Puerto Rico, Bayamon, Puerto Rico 00957, United States
| | - Yuen Yee Li Sip
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
| | - Xiaoyan Lu
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
- Department of Chemistry and Department of
Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - James Heidings
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
| | - Laurene Tetard
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
- Department of Chemistry and Department of
Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Lei Zhai
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
- Department of Chemistry and Department of
Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Hyeran Kang
- NanoScience
Technology Center, University of Central
Florida, Orlando, Florida 32826, United States
- Department of Chemistry and Department of
Physics, University of Central Florida, Orlando, Florida 32816, United States
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13
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Seo JR, Choi HW, Kim DE, Park DY, Kim EJ, Chung BG. Facile Synthesis of Surfactant-Free Au Decorated Hollow Silica Nanoparticles for Photothermal Applications. Macromol Res 2018. [DOI: 10.1007/s13233-018-6143-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Ning C, Zhou Z, Tan G, Zhu Y, Mao C. Electroactive polymers for tissue regeneration: Developments and perspectives. Prog Polym Sci 2018; 81:144-162. [PMID: 29983457 PMCID: PMC6029263 DOI: 10.1016/j.progpolymsci.2018.01.001] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Human body motion can generate a biological electric field and a current, creating a voltage gradient of -10 to -90 mV across cell membranes. In turn, this gradient triggers cells to transmit signals that alter cell proliferation and differentiation. Several cell types, counting osteoblasts, neurons and cardiomyocytes, are relatively sensitive to electrical signal stimulation. Employment of electrical signals in modulating cell proliferation and differentiation inspires us to use the electroactive polymers to achieve electrical stimulation for repairing impaired tissues. Electroactive polymers have found numerous applications in biomedicine due to their capability in effectively delivering electrical signals to the seeded cells, such as biosensing, tissue regeneration, drug delivery, and biomedical implants. Here we will summarize the electrical characteristics of electroactive polymers, which enables them to electrically influence cellular function and behavior, including conducting polymers, piezoelectric polymers, and polyelectrolyte gels. We will also discuss the biological response to these electroactive polymers under electrical stimulation. In particular, we focus this review on their applications in regenerating different tissues, including bone, nerve, heart muscle, cartilage and skin. Additionally, we discuss the challenges in tissue regeneration applications of electroactive polymers. We conclude that electroactive polymers have a great potential as regenerative biomaterials, due to their ability to stimulate desirable outcomes in various electrically responsive cells.
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Affiliation(s)
- Chengyun Ning
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China
- Guangdong Key Laboratory of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou 510006, China
| | - Zhengnan Zhou
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China
- Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
- Guangdong Key Laboratory of Biomedical Sciences and Engineering, South China University of Technology, Guangzhou 510006, China
| | - Guoxin Tan
- Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Ye Zhu
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019-5300, United States
| | - Chuanbin Mao
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019-5300, United States
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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15
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Liu H, Mukherjee S, Liu Y, Ramakrishna S. Recent studies on electrospinning preparation of patterned, core-shell, and aligned scaffolds. J Appl Polym Sci 2018. [DOI: 10.1002/app.46570] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Huichao Liu
- College of Mechanical and Electric Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Shayanti Mukherjee
- Centre for Nanofiber and Nanotechnology; National University of Singapore; Singapore 117576 Singapore
- The Ritchie Centre; Hudson Institute of Medical Research; Clayton Australia
| | - Yong Liu
- College of Mechanical and Electric Engineering; Beijing University of Chemical Technology; Beijing 100029 China
| | - Seeram Ramakrishna
- Centre for Nanofiber and Nanotechnology; National University of Singapore; Singapore 117576 Singapore
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16
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Gong Y, Han GT, Zhang YM, Zhang JF, Jiang W, Tao XW, Gao SC. Preparation of alginate membrane for tissue engineering. JOURNAL OF POLYMER ENGINEERING 2016. [DOI: 10.1515/polyeng-2015-0065] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Sodium alginate was provided with good processibility according to physical and chemical characterization of itself. Alginate scaffold has been used for preparation of soft or hard tissue engineering, but the structure of the scaffold needs to be improved for better performance for skin tissue engineering. In this study, highly porous alginate membrane was formed with ionic crosslinking. High molecular weight (Mw=3.0×105) alginate showed the best film-forming property. Therefore, the appropriate molecular weight should be selected for improving its performance. With freeze-drying technology and pre-freezing at -10°C, we have built the honeycomb materials (porosity=92.06%). Changing the pre-freezing temperature can regulate pore structure to some extent. With the increased dosage of sodium alginate, the porosity and the pore size of the materials were reduced, whereas tensile strength and elongation at break increased. Water absorption performance of the materials was good. The above studies lay a foundation for construction of skin tissue engineering scaffold.
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17
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Preparation of Nanofibers with Renewable Polymers and Their Application in Wound Dressing. INT J POLYM SCI 2016. [DOI: 10.1155/2016/4672839] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Renewable polymers have attracted considerable attentions in the last two decades, predominantly due to their environmentally friendly properties, renewability, good biocompatibility, biodegradability, bioactivity, and modifiability. The nanofibers prepared from the renewable polymers can combine the excellent properties of the renewable polymer and nanofiber, such as high specific surface area, high porosity, excellent performances in cell adhesion, migration, proliferation, differentiation, and the analogous physical properties of extracellular matrix. They have been widely used in the fields of wound dressing to promote the wound healing, hemostasis, skin regeneration, and treatment of diabetic ulcers. In the present review, the different methods to prepare the nanofibers from the renewable polymers were introduced. Then the recent progress on preparation and properties of the nanofibers from different renewable polymers or their composites were reviewed; the application of them in the fields of wound dressing was emphasized.
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18
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19
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Wu QX, Lin DQ, Yao SJ. Design of chitosan and its water soluble derivatives-based drug carriers with polyelectrolyte complexes. Mar Drugs 2014; 12:6236-53. [PMID: 25532565 PMCID: PMC4278227 DOI: 10.3390/md12126236] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/11/2014] [Accepted: 12/12/2014] [Indexed: 01/04/2023] Open
Abstract
Chitosan, the cationic polysaccharide derived from the natural polysaccharide chitin, has been studied as a biomaterial for more than two decades. As a polycationic polymer with favorable properties, it has been widely used to form polyelectrolyte complexes with polyanions for various applications in drug delivery fields. In recent years, a growing number of studies have been focused on the preparation of polyelectrolyte complexes based on chitosan and its water soluble derivatives. They have been considered well-suited as biomaterials for a number of vital drug carriers with targeted/controlled release profiles, e.g., films, capsules, microcapsules. In this work, an overview highlights not only the favorable properties of chitosan and its water soluble derivatives but also the good performance of the polyelectrolyte complexes produced based on chitosan. Their various types of applications as drug carriers are reviewed in detail.
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Affiliation(s)
- Qing-Xi Wu
- Integrated Biotechnology Laboratory, School of Life Science, Anhui University, Hefei 230601, China.
| | - Dong-Qiang Lin
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Shan-Jing Yao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
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20
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Ding F, Deng H, Du Y, Shi X, Wang Q. Emerging chitin and chitosan nanofibrous materials for biomedical applications. NANOSCALE 2014; 6:9477-93. [PMID: 25000536 DOI: 10.1039/c4nr02814g] [Citation(s) in RCA: 181] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Over the past several decades, we have witnessed significant progress in chitosan and chitin based nanostructured materials. The nanofibers from chitin and chitosan with appealing physical and biological features have attracted intense attention due to their excellent biological properties related to biodegradability, biocompatibility, antibacterial activity, low immunogenicity and wound healing capacity. Various methods, such as electrospinning, self-assembly, phase separation, mechanical treatment, printing, ultrasonication and chemical treatment were employed to prepare chitin and chitosan nanofibers. These nanofibrous materials have tremendous potential to be used as drug delivery systems, tissue engineering scaffolds, wound dressing materials, antimicrobial agents, and biosensors. This review article discusses the most recent progress in the preparation and application of chitin and chitosan based nanofibrous materials in biomedical fields.
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Affiliation(s)
- Fuyuan Ding
- School of Resource and Environmental Science and Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, 430079, China.
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