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Aguayo-Morales H, Cobos-Puc LE, Lopez-Badillo CM, Oyervides-Muñoz E, Ramírez-García G, Claudio-Rizo JA. Collagen-polyurethane-dextran hydrogels enhance wound healing by inhibiting inflammation and promoting collagen fibrillogenesis. J Biomed Mater Res A 2024; 112:1760-1777. [PMID: 38623028 DOI: 10.1002/jbm.a.37724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/29/2024] [Accepted: 04/04/2024] [Indexed: 04/17/2024]
Abstract
Diabetic foot ulcers are a serious complication of uncontrolled diabetes, emphasizing the need to develop wound healing strategies that are not only effective but also biocompatible, biodegradable, and safe. We aimed to create biomatrices composed of semi-interpenetrated polymer networks of collagen, polyurethane, and dextran, to enhance the wound healing process. The hydrogels were extensively characterized by various analytical techniques, including analysis of their structure, crystallinity, thermal properties, gelation process, reticulation, degradation, cell proliferation, and healing properties, among others. Semi-interpenetrated hydrogels containing dextran at levels of 10%, 20%, and 30% exhibited porous interconnections between collagen fibers and entrapped dextran granules, with a remarkable crosslinking index of up to 94% promoted by hydrogen bonds. These hydrogels showed significant improvements in mechanical properties, swelling, and resistance to proteolytic and hydrolytic degradation. After 24 h, there was a significant increase in the viability of several cell types, including RAW 264.7 cells, human peripheral blood mononuclear cells, and dermal fibroblasts. In addition, these hydrogels demonstrated an increased release of interleukin-10 and transforming growth factor-beta1 while inhibiting the release of monocyte chemotactic protein-1 and tumor necrosis factor-alpha after 72 h. Furthermore, these hydrogels accelerated the wound healing process in diabetic rats after topical application. Notably, the biomaterial with 20% dextran (D20) facilitated wound closure in only 21 days. These results highlight the potential of the D20 hydrogel, which exhibits physicochemical and biological properties that enhance wound healing by inhibiting inflammation and fibrillogenesis while remaining safe for application to the skin.
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Affiliation(s)
- Hilda Aguayo-Morales
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | - Luis E Cobos-Puc
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
| | | | | | - Gonzalo Ramírez-García
- Biofunctional Nanomaterials Laboratory, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro, Mexico
| | - Jesús A Claudio-Rizo
- Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico
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Pascouau C, Schweitzer M, Besenius P. Supramolecular Assembly and Thermogelation Strategies Using Peptide-Polymer Conjugates. Biomacromolecules 2024; 25:2659-2678. [PMID: 38663862 PMCID: PMC11095398 DOI: 10.1021/acs.biomac.4c00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 05/14/2024]
Abstract
Peptide-polymer conjugates (PPCs) are of particular interest in the development of responsive, adaptive, and interactive materials due to the benefits offered by combining both building blocks and components. This review presents pioneering work as well as recent advances in the design of peptide-polymer conjugates, with a specific focus on their thermoresponsive behavior. This unique class of materials has shown great promise in the development of supramolecular structures with physicochemical properties that are modulated using soft and biorthogonal external stimuli. The temperature-induced self-assembly of PPCs into various supramolecular architectures, gelation processes, and tuning of accessible processing parameters to biologically relevant temperature windows are described. The discussion covers the chemical design of the conjugates, the supramolecular driving forces involved, and the mutual influence of the polymer and peptide segments. Additionally, some selected examples for potential biomedical applications of thermoresponsive PPCs in tissue engineering, delivery systems, tumor therapy, and biosensing are highlighted, as well as perspectives on future challenges.
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Affiliation(s)
- Chloé Pascouau
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 1014, D-55128 Mainz, Germany
| | - Maren Schweitzer
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 1014, D-55128 Mainz, Germany
| | - Pol Besenius
- Department of Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 1014, D-55128 Mainz, Germany
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3
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Kumar M, Kumar D, Kumar D, Garg Y, Chopra S, Bhatia A. Therapeutic Potential of Nanocarrier Mediated Delivery of Peptides for Wound Healing: Current Status, Challenges and Future Prospective. AAPS PharmSciTech 2024; 25:108. [PMID: 38730090 DOI: 10.1208/s12249-024-02827-5] [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: 02/07/2024] [Accepted: 05/01/2024] [Indexed: 05/12/2024] Open
Abstract
Wound healing presents a complex physiological process that involves a sequence of events orchestrated by various cellular and molecular mechanisms. In recent years, there has been growing interest in leveraging nanomaterials and peptides to enhance wound healing outcomes. Nanocarriers offer unique properties such as high surface area-to-volume ratio, tunable physicochemical characteristics, and the ability to deliver therapeutic agents in a controlled manner. Similarly, peptides, with their diverse biological activities and low immunogenicity, hold great promise as therapeutics in wound healing applications. In this review, authors explore the potential of peptides as bioactive components in wound healing formulations, focusing on their antimicrobial, anti-inflammatory, and pro-regenerative properties. Despite the significant progress made in this field, several challenges remain, including the need for standardized characterization methods, optimization of biocompatibility and safety profiles, and translation from bench to bedside. Furthermore, developing multifunctional nanomaterial-peptide hybrid systems represents promising avenues for future research. Overall, the integration of nanomaterials made up of natural or synthetic polymers with peptide-based formulations holds tremendous therapeutic potential in advancing the field of wound healing and improving clinical outcomes for patients with acute and chronic wounds.
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Affiliation(s)
- Mohit Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Dikshant Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Devesh Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Yogesh Garg
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Shruti Chopra
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India
| | - Amit Bhatia
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, 151001, Punjab, India.
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Ekhtiari-Sadegh S, Samani S, Barneh F, Dashtbin S, Shokrgozar MA, Pooshang Bagheri K. Rapid eradication of vancomycin and methicillin-resistant Staphylococcus aureus by MDP1 antimicrobial peptide coated on photocrosslinkable chitosan hydrogel: in vitro antibacterial and in silico molecular docking studies. Front Bioeng Biotechnol 2024; 12:1385001. [PMID: 38681961 PMCID: PMC11047131 DOI: 10.3389/fbioe.2024.1385001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 03/26/2024] [Indexed: 05/01/2024] Open
Abstract
Introduction Antibiotic resistance and weak bioavailability of antibiotics in the skin due to systemic administration leads to failure in eradication of vancomycin- and methicillin-resistant Staphylococcus aureus (VRSA and MRSA)-associated wound infections and subsequent septicemia and even death. Accordingly, this study aimed at designing a photocrosslinkable methacrylated chitosan (MECs) hydrogel coated by melittin-derived peptide 1 (MDP1) that integrated the antibacterial activity with the promising skin regenerative capacity of the hydrogel to eradicate bacteria by burst release strategy. Methods The MECs was coated with MDP1 (MECs-MDP1), characterized, and the hydrogel-peptide interaction was evaluated by molecular docking. Antibacterial activities of MECs-MDP1 were evaluated against VRSA and MRSA bacteria and compared to MECs-vancomycin (MECs-vanco). Antibiofilm activity of MECs-MDP1 was studied by our novel 'in situ biofilm inhibition zone (IBIZ)' assay, and SEM. Biocompatibility with human dermal fibroblast cells (HDFs) was also evaluated. Results and Discussion Molecular docking showed hydrogen bonds as the most interactions between MDP1 and MECs at a reasonable affinity. MECs-MDP1 eradicated the bacteria rapidly by burst release strategy whereas MECs-vanco failed to eradicate them at the same time intervals. Antibiofilm activity of MECs-MDP1 were also proved successfully. As a novel report, molecular docking analysis has demonstrated that MDP1 covers the structure of MECs and also binds to lysozyme with a reasonable affinity, which may explain the inhibition of lysozyme. MECs-MDP1 was also biocompatible with human dermal fibroblast skin cells, which indicates its safe future application. The antibacterial properties of a photocrosslinkable methacrylated chitosan-based hydrogel coated with MDP1 antimicrobial peptide were successfully proved against the most challenging antibiotic-resistant bacteria causing nosocomial wound infections; VRSA and MRSA. Molecular docking analysis revealed that MDP1 interacts with MECs mainly through hydrogen bonds with reasonable binding affinity. MECs-MDP1 hydrogels eradicated the planktonic state of bacteria by burst release of MDP1 in just a few hours whereas MECs-vanco failed to eradicate them. inhibition zone assay showed the anti-biofilm activity of the MECs-MDP1 hydrogel too. These findings emphasize that MECs-MDP1 hydrogel would be suggested as a biocompatible wound-dressing candidate with considerable and rapid antibacterial activities to prevent/eradicate VRSA/MRSA bacterial wound infections.
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Affiliation(s)
- Sarvenaz Ekhtiari-Sadegh
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Saeed Samani
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farnoosh Barneh
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Shirin Dashtbin
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Kamran Pooshang Bagheri
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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Cao L, Zhang Z, Yuan D, Yu M, Min J. Tissue engineering applications of recombinant human collagen: a review of recent progress. Front Bioeng Biotechnol 2024; 12:1358246. [PMID: 38419725 PMCID: PMC10900516 DOI: 10.3389/fbioe.2024.1358246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/31/2024] [Indexed: 03/02/2024] Open
Abstract
With the rapid development of synthetic biology, recombinant human collagen has emerged as a cutting-edge biological material globally. Its innovative applications in the fields of material science and medicine have opened new horizons in biomedical research. Recombinant human collagen stands out as a highly promising biomaterial, playing a pivotal role in crucial areas such as wound healing, stroma regeneration, and orthopedics. However, realizing its full potential by efficiently delivering it for optimal therapeutic outcomes remains a formidable challenge. This review provides a comprehensive overview of the applications of recombinant human collagen in biomedical systems, focusing on resolving this crucial issue. Additionally, it encompasses the exploration of 3D printing technologies incorporating recombinant collagen to address some urgent clinical challenges in regenerative repair in the future. The primary aim of this review also is to spotlight the advancements in the realm of biomaterials utilizing recombinant collagen, with the intention of fostering additional innovation and making significant contributions to the enhancement of regenerative biomaterials, therapeutic methodologies, and overall patient outcomes.
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Affiliation(s)
- Lili Cao
- Department of Plastic Surgery, Zhejiang Rongjun Hospital, Jiaxing, Zhejiang, China
| | - Zhongfeng Zhang
- Department of Plastic Surgery, Zhejiang Rongjun Hospital, Jiaxing, Zhejiang, China
| | - Dan Yuan
- Department of Plastic Surgery, Zhejiang Rongjun Hospital, Jiaxing, Zhejiang, China
| | - Meiping Yu
- Department of Plastic Surgery, Zhejiang Rongjun Hospital, Jiaxing, Zhejiang, China
| | - Jie Min
- General Surgery Department, Jiaxing No.1 Hospital, Jiaxing, Zhejiang, China
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Che X, Zhao T, Hu J, Yang K, Ma N, Li A, Sun Q, Ding C, Ding Q. Application of Chitosan-Based Hydrogel in Promoting Wound Healing: A Review. Polymers (Basel) 2024; 16:344. [PMID: 38337233 DOI: 10.3390/polym16030344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/14/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024] Open
Abstract
Chitosan is a linear polyelectrolyte with active hydroxyl and amino groups that can be made into chitosan-based hydrogels by different cross-linking methods. Chitosan-based hydrogels also have a three-dimensional network of hydrogels, which can accommodate a large number of aqueous solvents and biofluids. CS, as an ideal drug-carrying material, can effectively encapsulate and protect drugs and has the advantages of being nontoxic, biocompatible, and biodegradable. These advantages make it an ideal material for the preparation of functional hydrogels that can act as wound dressings for skin injuries. This review reports the role of chitosan-based hydrogels in promoting skin repair in the context of the mechanisms involved in skin injury repair. Chitosan-based hydrogels were found to promote skin repair at different process stages. Various functional chitosan-based hydrogels are also discussed.
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Affiliation(s)
- Xueyan Che
- College of Traditional Chinese Medicine, Jilin Agriculture Science and Technology University, Jilin City 132101, China
| | - Ting Zhao
- College of Traditional Chinese Medicine, Jilin Agriculture Science and Technology University, Jilin City 132101, China
| | - Jing Hu
- College of Traditional Chinese Medicine, Jilin Agriculture Science and Technology University, Jilin City 132101, China
| | - Kaicheng Yang
- College of Traditional Chinese Medicine, Jilin Agriculture Science and Technology University, Jilin City 132101, China
| | - Nan Ma
- College of Traditional Chinese Medicine, Jilin Agriculture Science and Technology University, Jilin City 132101, China
| | - Anning Li
- Jilin Aodong Yanbian Pharmaceutical Co., Ltd., Dunhua 133000, China
| | - Qi Sun
- Jilin Zhengrong Pharmaceutical Development Co., Ltd., Dunhua 133700, China
| | - Chuanbo Ding
- College of Traditional Chinese Medicine, Jilin Agriculture Science and Technology University, Jilin City 132101, China
| | - Qiteng Ding
- College of Traditional Chinese Medicine, Jilin Agricultural University, Changchun 130118, China
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7
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Kumar M, Kumar D, Garg Y, Mahmood S, Chopra S, Bhatia A. Marine-derived polysaccharides and their therapeutic potential in wound healing application - A review. Int J Biol Macromol 2023; 253:127331. [PMID: 37820901 DOI: 10.1016/j.ijbiomac.2023.127331] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/04/2023] [Accepted: 10/07/2023] [Indexed: 10/13/2023]
Abstract
Polysaccharides originating from marine sources have been studied as potential material for use in wound dressings because of their desirable characteristics of biocompatibility, biodegradability, and low toxicity. Marine-derived polysaccharides used as wound dressing, provide several benefits such as promoting wound healing by providing a moist environment that facilitates cell migration and proliferation. They can also act as a barrier against external contaminants and provide a protective layer to prevent further damage to the wound. Research studies have shown that marine-derived polysaccharides can be used to develop different types of wound dressings such as hydrogels, films, and fibres. These dressings can be personalised to meet specific requirements based on the type and severity of the wound. For instance, hydrogels can be used for deep wounds to provide a moist environment, while films can be used for superficial wounds to provide a protective barrier. Additionally, these polysaccharides can be modified to improve their properties, such as enhancing their mechanical strength or increasing their ability to release bioactive molecules that can promote wound healing. Overall, marine-derived polysaccharides show great promise for developing effective and safe wound dressings for various wound types.
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Affiliation(s)
- Mohit Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India
| | - Devesh Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India
| | - Yogesh Garg
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India
| | - Syed Mahmood
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Shruti Chopra
- Amity Institute of Pharmacy, Amity University, Noida, Uttar Pradesh 201313, India
| | - Amit Bhatia
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India.
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8
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Zhang T, Luo X, Xu K, Zhong W. Peptide-containing nanoformulations: Skin barrier penetration and activity contribution. Adv Drug Deliv Rev 2023; 203:115139. [PMID: 37951358 DOI: 10.1016/j.addr.2023.115139] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/21/2023] [Accepted: 11/08/2023] [Indexed: 11/14/2023]
Abstract
Transdermal drug delivery presents a less invasive pathway, circumventing the need to pass through the gastrointestinal tract and liver, thereby reducing drug breakdown, initial metabolism, and gastrointestinal discomfort. Nevertheless, the unique composition and dense structure of the stratum corneum present a significant barrier to transdermal delivery. This article presents an overview of the current developments in peptides and nanotechnology to address this challenge. Initially, we sum up peptide-containing nanoformulations for transdermal drug delivery, examining them through the lenses of both inorganic and organic materials. Particular emphasis is placed on the diverse roles that peptides play within these nanoformulations, including conferring functionality upon nanocarriers and enhancing the biological efficacy of drugs. Subsequently, we summarize innovative strategies for enhancing skin penetration, categorizing them into passive and active approaches. Lastly, we discuss the therapeutic potential of peptide-containing nanoformulations in addressing a range of diseases, drawing insights from the biological activities and functions of peptides. Furthermore, the challenges hindering clinical translation are also discussed, providing valuable insights for future advancements in transdermal drug delivery.
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Affiliation(s)
- Tingting Zhang
- Department of Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Xuan Luo
- Department of Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Keming Xu
- Department of Chemistry, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing 210009, China.
| | - Wenying Zhong
- Department of Chemistry, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Biomedical Functional Materials, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing 210009, China.
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9
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ZABIHI A, PASHAPOUR S, MAHMOODI M. Cell Therapy and Investigation of the Angiogenesis of Fibroblasts with Collagen Hydrogel on the Healing of Diabetic Wounds. Turk J Pharm Sci 2023; 20:302-309. [PMID: 37933815 PMCID: PMC10631366 DOI: 10.4274/tjps.galenos.2022.62679] [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: 11/08/2022] [Accepted: 12/15/2022] [Indexed: 12/29/2022]
Abstract
Objectives A diabetic ulcer is a common disease in patients with diabetes. Because of antibiotic resistance, new therapeutic alternatives are being considered in diabetic foot patients to reduce complications and mortality. This study aimed to evaluate the effect of collagen hydrogel on the wound-healing process in diabetic rats. Materials and Methods Diabetic wounds were induced with streptozotocin in all 42 male Wistar rats. The rats were divided into four groups: (a) treated with fibroblast cells, (b) collagen hydrogel, (c) collagen cultured with fibroblast cells, and (d) a control group. Microscopic and histological (hematoxylin and eosin staining and Mason trichrome staining), measurement of wound surface with image J, skin density and thickness by the ultrasound probe, and skin elasticity with cytometer tool were used to evaluate wound healing at days 14 and 21 after the treatment. Results The results showed that treating diabetic wounds with fibroblasts cultured in collagen hydrogel greatly reduces inflammatory responses in the skin tissue and significantly accelerates the healing process. In addition, 21 days after the start of treatment, skin elasticity, thickness, and density were higher in the collagen + fibroblast group than in the control group. Conclusion In addition, the results of the present study show that diabetic wound dressing can significantly reduce the inflammatory phase in the wound healing process by increasing the speed of collagen synthesis, skin density and elasticity, and angiogenesis.
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Affiliation(s)
- Abbas ZABIHI
- Islamic Azad University Faculty of Basic Sciences, Department of Biology, Hamedan, Iran
| | - Sanaz PASHAPOUR
- Tehran Medical Sciences Faculty of Pharmacy and Pharmaceutical Sciences; Islamic Azad University, Department of Pharmacology and Toxicology, Tehran, Iran
| | - Minoo MAHMOODI
- Islamic Azad University Faculty of Basic Sciences, Department of Biology, Hamedan, Iran
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10
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Gu R, Zhou H, Zhang Z, Lv Y, Pan Y, Li Q, Shi C, Wang Y, Wei L. Research progress related to thermosensitive hydrogel dressings in wound healing: a review. NANOSCALE ADVANCES 2023; 5:6017-6037. [PMID: 37941954 PMCID: PMC10629053 DOI: 10.1039/d3na00407d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/27/2023] [Indexed: 11/10/2023]
Abstract
Wound healing is a dynamic and complex process in which the microenvironment at the wound site plays an important role. As a common material for wound healing, dressings accelerate wound healing and prevent external wound infections. Hydrogels have become a hot topic in wound-dressing research because of their high water content, good biocompatibility, and adjustable physical and chemical properties. Intelligent hydrogel dressings have attracted considerable attention because of their excellent environmental responsiveness. As smart polymer hydrogels, thermosensitive hydrogels can respond to small temperature changes in the environment, and their special properties make them superior to other hydrogels. This review mainly focuses on the research progress in thermosensitive intelligent hydrogel dressings for wound healing. Polymers suitable for hydrogel formation and the appropriate molecular design of the hydrogel network to achieve thermosensitive hydrogel properties are discussed, followed by the application of thermosensitive hydrogels as wound dressings. We also discuss the future perspectives of thermosensitive hydrogels as wound dressings and provide systematic theoretical support for wound healing.
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Affiliation(s)
- Ruting Gu
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Haiqing Zhou
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Zirui Zhang
- Emergency Departments, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Yun Lv
- School of Nursing, Qingdao University Qingdao 266000 China
| | - Yueshuai Pan
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Qianqian Li
- Ophthalmology Department, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Changfang Shi
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Yanhui Wang
- Department of Oral Implantology, The Affiliated Hospital of Qingdao University Qingdao 266000 China
| | - Lili Wei
- Office of the Dean, The Affiliated Hospital of Qingdao University Qingdao 266000 China
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11
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Kang D, Wang W, Li Y, Ma Y, Huang Y, Wang J. Biological Macromolecule Hydrogel Based on Recombinant Type I Collagen/Chitosan Scaffold to Accelerate Full-Thickness Healing of Skin Wounds. Polymers (Basel) 2023; 15:3919. [PMID: 37835967 PMCID: PMC10575414 DOI: 10.3390/polym15193919] [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: 08/12/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/15/2023] Open
Abstract
The development of biological macromolecule hydrogel dressings with fatigue resistance, sufficient mechanical strength, and versatility in clinical treatment is critical for accelerating full-thickness healing of skin wounds. Therefore, in this study, multifunctional, biological macromolecule hydrogels based on a recombinant type I collagen/chitosan scaffold incorporated with a metal-polyphenol structure were fabricated to accelerate wound healing. The resulting biological macromolecule hydrogel possesses sufficient mechanical strength, fatigue resistance, and healing properties, including antibacterial, antioxygenic, self-healing, vascularization, hemostatic, and adhesive abilities. Chitosan and recombinant type I collagen formed the scaffold network, which was the first covalent crosslinking network of the hydrogel. The second physical crosslinking network comprised the coordination of a metal-polyphenol structure, i.e., Cu2+ with the catechol group of dopamine methacrylamide (DMA) and stacking of DMA benzene rings. Double-crosslinked networks are interspersed and intertwined in the hydrogel to reduce the mechanical strength and increase its fatigue resistance, making it more suitable for clinical applications. Moreover, the biological macromolecule hydrogel can continuously release Cu2+, which provides strong antibacterial and vascularization properties. An in vivo full-thickness skin defect model confirmed that multifunctional, biological macromolecule hydrogels based on a recombinant type I collagen/chitosan scaffold incorporated with a metal-polyphenol structure can facilitate the formation of granulation tissue and collagen deposition for a short period to promote wound healing. This study highlights that this biological macromolecule hydrogel is a promising acute wound-healing dressing for biomedical applications.
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Affiliation(s)
- Duo Kang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (D.K.); (W.W.); (Y.L.); (Y.M.)
| | - Wenhai Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (D.K.); (W.W.); (Y.L.); (Y.M.)
| | - Yanmei Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (D.K.); (W.W.); (Y.L.); (Y.M.)
| | - Yi Ma
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (D.K.); (W.W.); (Y.L.); (Y.M.)
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou 510006, China
| | - Yadong Huang
- Department of Cell Biology, Jinan University, Guangzhou 510632, China;
| | - Jufang Wang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (D.K.); (W.W.); (Y.L.); (Y.M.)
- Guangdong Provincial Key Laboratory of Fermentation and Enzyme Engineering, South China University of Technology, Guangzhou 510006, China
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12
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Demeter M, Negrescu AM, Calina I, Scarisoreanu A, Albu Kaya M, Micutz M, Dumitru M, Cimpean A. Synthesis, Physicochemical Characteristics, and Biocompatibility of Multi-Component Collagen-Based Hydrogels Developed by E-Beam Irradiation. J Funct Biomater 2023; 14:454. [PMID: 37754868 PMCID: PMC10532005 DOI: 10.3390/jfb14090454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/24/2023] [Accepted: 08/28/2023] [Indexed: 09/28/2023] Open
Abstract
Herein, three different recipes of multi-component hydrogels were synthesized by e-beam irradiation. These hydrogels were obtained from aqueous polymer mixtures in which different proportions of bovine collagen gel, sodium carboxymethylcellulose (CMC), poly(vinylpyrrolidone), chitosan, and poly(ethylene oxide) were used. The cross-linking reaction was carried out exclusively by e-beam cross-linking at 25 kGy, a dose of irradiation sufficient both to complete the cross-linking reaction and effective for hydrogel sterilization. The hydrogels developed in this study were tested in terms of physical and chemical stability, mechanical, structural, morphological, and biological properties. They are transparent, maintain their structure, are non-adhesive when handling, and most importantly, especially from the application point of view, have an elastic structure. Likewise, these hydrogels possessed different swelling degrees and expressed rheological behavior characteristic of soft solids with permanent macromolecular network. Morphologically, collagen- and CMC based-hydrogels showed porous structures with homogeneously distributed pores assuring a good loading capacity with drugs. These hydrogels were investigated by indirect and direct contact studies with Vero cell line (CCL-81™, ATCC), demonstrating that they are well tolerated by normal cells and, therefore, showed promising potential for further use in the development of drug delivery systems based on hydrogels.
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Affiliation(s)
- Maria Demeter
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania; (M.D.); (M.D.)
| | - Andreea Mariana Negrescu
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania; (A.M.N.); (A.C.)
| | - Ion Calina
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania; (M.D.); (M.D.)
| | - Anca Scarisoreanu
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania; (M.D.); (M.D.)
| | - Mădălina Albu Kaya
- Department of Collagen, Division Leather and Footwear Research Institute, National Research and Development Institute for Textiles and Leather (INCDTP), 93 Ion Minulescu Str., 031215 Bucharest, Romania;
| | - Marin Micutz
- Department of Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania;
| | - Marius Dumitru
- National Institute for Lasers, Plasma and Radiation Physics (INFLPR), Atomiştilor 409, 077125 Măgurele, Romania; (M.D.); (M.D.)
| | - Anisoara Cimpean
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 050095 Bucharest, Romania; (A.M.N.); (A.C.)
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13
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Niu J, Yuan M, Gao P, Wang L, Qi Y, Chen J, Bai K, Fan Y, Liu X. Microemulsion-Based Keratin-Chitosan Gel for Improvement of Skin Permeation/Retention and Activity of Curcumin. Gels 2023; 9:587. [PMID: 37504466 PMCID: PMC10379975 DOI: 10.3390/gels9070587] [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: 06/26/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023] Open
Abstract
Curcumin (Cur) is a kind of polyphenol with a variety of topical pharmacological properties including antioxidant, analgesic and anti-inflammatory activities. However, its low water solubility and poor skin bioavailability limit its effectiveness. In the current study, we aimed to develop microemulsion-based keratin-chitosan gel for the improvement of the topical activity of Cur. The curcumin-loaded microemulsion (CME) was formulated and then loaded into the keratin-chitosan (KCS) gel to form the CME-KCS gel. The formulated CME-KCS gel was evaluated for its characterization, in vitro release, in vitro skin permeation and in vivo activity. The results showed that the developed CME-KCS gel had an orange-yellow and gel-like appearance. The particle size and zeta potential of the CME-KCS gel were 186.45 ± 0.75 nm and 9.42 ± 0.86 mV, respectively. The CME-KCS gel showed desirable viscoelasticity, spreadability, bioadhesion and controlled drug release, which was suitable for topical application. The in vitro skin permeation and retention study showed that the CME-KCS gel had better in vitro skin penetration than the Cur solution and achieved maximum skin drug retention (3.75 ± 0.24 μg/cm2). In vivo experimental results confirmed that the CME-KCS gel was more effective than curcumin-loaded microemulsion (Cur-ME) in analgesic and anti-inflammatory activities. In addition, the CME-KCS gel did not cause any erythema or edema based on a mice skin irritation test. These findings indicated that the developed CME-KCS gel could improve the skin penetration and retention of Cur and could become a promising formulation for topical delivery to treat local diseases.
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Affiliation(s)
- Jiangxiu Niu
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Ming Yuan
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Panpan Gao
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Liye Wang
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Yueheng Qi
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Jingjing Chen
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Kaiyue Bai
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Yanli Fan
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
| | - Xianming Liu
- College of Food and Drug, Luoyang Normal University, Luoyang 471934, China
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14
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Devernois E, Coradin T. Synthesis, Characterization and Biological Properties of Type I Collagen-Chitosan Mixed Hydrogels: A Review. Gels 2023; 9:518. [PMID: 37504397 PMCID: PMC10379456 DOI: 10.3390/gels9070518] [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: 05/31/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/29/2023] Open
Abstract
Type I collagen and chitosan are two of the main biological macromolecules used to design scaffolds for tissue engineering. The former has the benefits of being biocompatible and provides biochemical cues for cell adhesion, proliferation and differentiation. However, collagen hydrogels usually exhibit poor mechanical properties and are difficult to functionalize. Chitosan is also often biocompatible, but is much more versatile in terms of structure and chemistry. Although it does have important biological properties, it is not a good substrate for mammalian cells. Combining of these two biomacromolecules is therefore a strategy of choice for the preparation of interesting biomaterials. The aim of this review is to describe the different protocols available to prepare Type I collagen-chitosan hydrogels for the purpose of presenting their physical and chemical properties and highlighting the benefits of mixed hydrogels over single-macromolecule ones. A critical discussion of the literature is provided to point out the poor understanding of chitosan-type I collagen interactions, in particular due to the lack of systematic studies addressing the effect of chitosan characteristics.
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Affiliation(s)
- Enguerran Devernois
- Laboratoire de Chimie de la Matière Condensée de Paris, CNRS, Sorbonne Université, 4 Place Jussieu, 75005 Paris, France
| | - Thibaud Coradin
- Laboratoire de Chimie de la Matière Condensée de Paris, CNRS, Sorbonne Université, 4 Place Jussieu, 75005 Paris, France
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15
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Serpico L, Dello Iacono S, Cammarano A, De Stefano L. Recent Advances in Stimuli-Responsive Hydrogel-Based Wound Dressing. Gels 2023; 9:451. [PMID: 37367122 DOI: 10.3390/gels9060451] [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: 05/03/2023] [Revised: 05/24/2023] [Accepted: 05/28/2023] [Indexed: 06/28/2023] Open
Abstract
Polymeric materials have found increasing use in biomedical applications in the last decades. Among them, hydrogels represent the chosen class of materials to use in this field, in particular as wound dressings. They are generally non-toxic, biocompatible, and biodegradable, and they can absorb large amounts of exudates. Moreover, hydrogels actively contribute to skin repair promoting fibroblast proliferation and keratinocyte migration, allowing oxygen to permeate, and protecting wounds from microbial invasion. As wound dressing, stimuli-responsive systems are particularly advantageous since they can be active only in response to specific environmental stimuli (such as pH, light, ROS concentration, temperature, and glucose level). In this review, we briefly resume the human skin's structure and functions, as well as the wound healing phases; then, we present recent advances in stimuli-responsive hydrogels-based wound dressings. Lastly, we provide a bibliometric analysis of knowledge produced in the field.
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Affiliation(s)
- Luigia Serpico
- Institute of Applied Sciences and Intelligent Systems (ISASI), National Research Council, Via P. Castellino 111, 80131 Naples, Italy
- Materias Srl, Corso N. Protopisani 50, 80146 Naples, Italy
| | - Stefania Dello Iacono
- Institute of Polymers, Composites and Biomaterials (IPCB), National Research Council, P.le E. Fermi 1, 80055 Portici, Italy
| | | | - Luca De Stefano
- Institute of Applied Sciences and Intelligent Systems (ISASI), National Research Council, Via P. Castellino 111, 80131 Naples, Italy
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16
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Lupu A, Gradinaru LM, Gradinaru VR, Bercea M. Diversity of Bioinspired Hydrogels: From Structure to Applications. Gels 2023; 9:gels9050376. [PMID: 37232968 DOI: 10.3390/gels9050376] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023] Open
Abstract
Hydrogels are three-dimensional networks with a variety of structures and functions that have a remarkable ability to absorb huge amounts of water or biological fluids. They can incorporate active compounds and release them in a controlled manner. Hydrogels can also be designed to be sensitive to external stimuli: temperature, pH, ionic strength, electrical or magnetic stimuli, specific molecules, etc. Alternative methods for the development of various hydrogels have been outlined in the literature over time. Some hydrogels are toxic and therefore are avoided when obtaining biomaterials, pharmaceuticals, or therapeutic products. Nature is a permanent source of inspiration for new structures and new functionalities of more and more competitive materials. Natural compounds present a series of physico-chemical and biological characteristics suitable for biomaterials, such as biocompatibility, antimicrobial properties, biodegradability, and nontoxicity. Thus, they can generate microenvironments comparable to the intracellular or extracellular matrices in the human body. This paper discusses the main advantages of the presence of biomolecules (polysaccharides, proteins, and polypeptides) in hydrogels. Structural aspects induced by natural compounds and their specific properties are emphasized. The most suitable applications will be highlighted, including drug delivery, self-healing materials for regenerative medicine, cell culture, wound dressings, 3D bioprinting, foods, etc.
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Affiliation(s)
- Alexandra Lupu
- "Petru Poni" Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Luiza Madalina Gradinaru
- "Petru Poni" Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Vasile Robert Gradinaru
- Faculty of Chemistry, "Alexandru Ioan Cuza" University, 11 Carol I Bd., 700506 Iasi, Romania
| | - Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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17
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Sam R, Divanbeigi Kermani M, Ohadi M, Salarpour S, Dehghan Noudeh G. Different Applications of Temperature responsive nanogels as a new drug delivery system mini review. Pharm Dev Technol 2023; 28:492-500. [PMID: 37129530 DOI: 10.1080/10837450.2023.2209796] [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] [Indexed: 05/03/2023]
Abstract
Temperature-sensitive drug delivery systems (TSDDS) are one of the systems that have received more attention in medical science these days due to their advantages. As these systems are sensitive to temperature, drug delivery to the target becomes more specific. Temperature-sensitive nanogels have many applications, including microbial infections, cancer therapy, transdermal use and tissue repair. These systems are characterized by minimal toxicity, improved therapeutic efficacy and reduced exposure to normal cells. This mini-review is prepared with different types of temperature-sensitive nanogel formation, release mechanisms, and their different applications. Various systems reported under these categories for targeted and controlled delivery of different classes of drugs, such as anti-cancer and antibiotic drugs with special emphasis on anti-cancer drugs and tissue healing, are discussed in this mini-review.
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Affiliation(s)
- Reyhaneh Sam
- Student research committee, Kerman University of Medical Sciences, Kerman, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Mandana Ohadi
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Soodeh Salarpour
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Gholamreza Dehghan Noudeh
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
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18
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Campelo MDS, Mota LB, Câmara Neto JF, Barbosa MLL, Gonzaga MLDC, Leal LKAM, Bastos MDSR, Soares SDA, Ricardo NMPS, Cerqueira GS, Ribeiro MENP. Agaricus blazei Murill extract-loaded in alginate/poly(vinyl alcohol) films prepared by Ca 2+ cross-linking for wound healing applications. J Biomed Mater Res B Appl Biomater 2023; 111:1035-1047. [PMID: 36455230 DOI: 10.1002/jbm.b.35212] [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: 04/08/2022] [Revised: 11/08/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022]
Abstract
This work aimed the development and evaluation of the wound healing activity of films based on sodium alginate, polyvinyl alcohol (PVA) and Ca2+ loaded with Agaricus blazei Murill hydroalcoholic extract (AbE). Firstly, AbE was prepared using a previously standardized methodology. The films were prepared by casting technique and cross-linked with Ca2+ using CaCl2 as cross-linking agent. The physicochemical, morphological and water vapor barrier properties of the films were analyzed and the pre-clinical efficacy was investigated against the cutaneous wound model in mice. The films showed barrier properties to water vapor promising for wound healing. AbE showed physical and chemical interactions between both polymers, noticed by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and thermal analysis. The delivery of AbE in alginate/PVA films enhanced the antioxidant and wound healing properties of these polymers. Consequently, a reduction of malondialdehyde levels was observed, as well as an increase of the epidermis/dermis thickness and enhancement in collagen I deposition. Thus, these formulations are promising biomaterials for wound care and tissue repairing.
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Affiliation(s)
- Matheus da Silva Campelo
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil.,Centro de Estudos Farmacêuticos e Cosméticos, Departamento de Farmácia, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Lucas Barroso Mota
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil
| | - João Francisco Câmara Neto
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Maria Lucianny Lima Barbosa
- Núcleo de Estudos em Microscopia e Processamento de Imagens, Departamento de Morfologia, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Maria Leônia da Costa Gonzaga
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil.,Laboratório de Tecnologia de Embalagens de Alimentos, Embrapa Agroindústria Tropical, Fortaleza, Brazil
| | | | | | - Sandra de Aguiar Soares
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Nágila Maria Pontes Silva Ricardo
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Gilberto Santos Cerqueira
- Núcleo de Estudos em Microscopia e Processamento de Imagens, Departamento de Morfologia, Universidade Federal do Ceará, Fortaleza, Brazil
| | - Maria Elenir Nobre Pinho Ribeiro
- Laboratório de Polímeros e Inovação de Materiais, Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza, Brazil.,Núcleo de Estudos em Microscopia e Processamento de Imagens, Departamento de Morfologia, Universidade Federal do Ceará, Fortaleza, Brazil
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19
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Solanki D, Vinchhi P, Patel MM. Design Considerations, Formulation Approaches, and Strategic Advances of Hydrogel Dressings for Chronic Wound Management. ACS OMEGA 2023; 8:8172-8189. [PMID: 36910992 PMCID: PMC9996804 DOI: 10.1021/acsomega.2c06806] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Wound healing is a complex and dynamic physiological process consisting of a series of cellular and molecular events that initiate immediately after a tissue lesion, to reconstruct the skin layer. It is indubitable that patients with chronic wounds, severely infected wounds, or any metabolic disorder of the wound microenvironment always endure severe pain and discomfort that affect their quality of life. It is essential to treat chronic wounds for conserving the physical as well as mental well-being of affected patients and for convalescing to improve their quality of life. For supporting and augmenting the healing process, the selection of pertinent wound dressing is essential. A substantial reduction in healing duration, disability, associated cost, and risk of recurrent infections can be achieved via engineering wound dressings. Hydrogels play a leading role in the path of engineering ideal wound dressings. Hydrogels, comprising water to a large extent, providing a moist environment, being comfortable to patients, and having biocompatible and biodegradable properties, have found their success as suitable wound dressings in the market. The exploitation of hydrogels is increasing perpetually after substantiation of their broader therapeutic actions owing to their resemblance to dermal tissues, their capability to stimulate partial skin regeneration, and their ability to incorporate therapeutic moieties promoting wound healing. This review entails properties of hydrogel supporting wound healing, types of hydrogels, cross-linking mechanisms, design considerations, and formulation strategies of hydrogel engineering. Various categories of hydrogel wound dressing fabricated recently are discussed based on their gel network composition, degradability, and physical and chemical cross-linking mechanisms, which provide an outlook regarding the importance of tailoring the physicochemical properties of hydrogels. The examples of marketed hydrogel wound dressings are also incorporated along with the future perspectives and challenges associated with them.
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20
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Kulkarni N, Rao P, Jadhav GS, Kulkarni B, Kanakavalli N, Kirad S, Salunke S, Tanpure V, Sahu B. Emerging Role of Injectable Dipeptide Hydrogels in Biomedical Applications. ACS OMEGA 2023; 8:3551-3570. [PMID: 36743055 PMCID: PMC9893456 DOI: 10.1021/acsomega.2c05601] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/30/2022] [Indexed: 06/18/2023]
Abstract
Owing to their properties such as biocompatibility, tunable mechanical properties, permeability toward oxygen, nutrients, and the ability to hold a significant amount of water, hydrogels have wide applications in biomedical research. They have been engaged in drug delivery systems, 3D cell culture, imaging, and extracellular matrix (ECM) mimetics. Injectable hydrogels represent a major subset of hydrogels possessing advantages of site-specific conformation with minimal invasive techniques. It preserves the inherent properties of drug/biomolecules and is devoid of any side effects associated with surgery. Various polymeric materials utilized in developing injectable hydrogels are associated with the limitations of toxicity, immunogenicity, tedious manufacturing processes, and lack of easy synthetic tunability. Peptides are an important class of biomaterials that have interesting properties such as biocompatibility, stimuli responsiveness, shear thinning, self-healing, and biosignaling. They lack immunogenicity and toxicity. Therefore, numerous peptide-based injectable hydrogels have been explored in the past, and a few of them have reached the market. In recent years, minimalistic dipeptides have shown their ability to form stable hydrogels through cooperative noncovalent interactions. In addition to inherent properties of lengthy peptide-based injectable hydrogels, dipeptides have the unique advantages of low production cost, high synthetic accessibility, and higher stability. Given the instances of expanding significance of injectable peptide hydrogels in biomedical research and an emerging recent trend of dipeptide-based injectable hydrogels, a timely review on dipeptide-based injectable hydrogels shall highlight various aspects of this interesting class of biomaterials. This concise review that focuses on the dipeptide injectable hydrogel may stimulate the current trends of research on this class of biomaterial to translate its significance as interesting products for biomedical applications.
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Affiliation(s)
- Neeraj Kulkarni
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
| | - Prajakta Rao
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
- Quality
Operations, Novartis Healthcare Pvt. Ltd., Knowledge City, Raidurg, Hyderabad 500081, Telangana, India
| | - Govinda Shivaji Jadhav
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
| | - Bhakti Kulkarni
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
- Springer
Nature Technology and Publishing Solutions, Hadapsar, Pune 411013, Maharashtra, India
| | - Nagaraju Kanakavalli
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
- Aragen
Life Sciences Pvt, Ltd., Madhapur, Hyderabad 500076, Telangana, India
| | - Shivani Kirad
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
| | - Sujit Salunke
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
| | - Vrushali Tanpure
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
| | - Bichismita Sahu
- Department
of Medicinal Chemistry, National Institute
of Pharmaceutical Education and Research (NIPER), Ahmedabad, Opposite Air Force Station, Palaj, Gandhinagar 382355, India
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21
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Ren LJ, Zhou HY, Hao PY, Zheng HJ, Tong JN, Chen YW, Park HJ. Amino acids grafted‐chitosan/glycerophosphate hydrogel for controlled release of berberine hydrochloride. J Appl Polym Sci 2023. [DOI: 10.1002/app.53632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Li Jun Ren
- Chemical Engineering & Pharmaceutics College Henan University of Science and Technology Luoyang China
| | - Hui Yun Zhou
- Chemical Engineering & Pharmaceutics College Henan University of Science and Technology Luoyang China
| | - Pei Yan Hao
- Chemical Engineering & Pharmaceutics College Henan University of Science and Technology Luoyang China
| | - Hui Jie Zheng
- Chemical Engineering & Pharmaceutics College Henan University of Science and Technology Luoyang China
| | - Jia Nan Tong
- Chemical Engineering & Pharmaceutics College Henan University of Science and Technology Luoyang China
| | - Ya Wei Chen
- Chemical Engineering & Pharmaceutics College Henan University of Science and Technology Luoyang China
| | - Hyun Jin Park
- Graduate School of Biotechnology Korea University Seoul Korea
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22
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State of the Art of Hydrogel Wound Dressings Developed by Ionizing Radiation. Gels 2023; 9:gels9010055. [PMID: 36661821 PMCID: PMC9858288 DOI: 10.3390/gels9010055] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
The development of an ideal hydrogel wound dressing with excellent characteristics is currently a significant demand in wound therapy. The ideal hydrogel wound dressing must provide a moist environment between the wound and the dressing, promote wound healing, absorb excess exudate and toxins, be completely sterile, and not adhere to the wound. The evolution and current status of research on hydrogel wound dressings obtained exclusively through production by ionizing radiation are discussed in this paper review, along with the preparation methods, properties, standard characterization techniques, and their applications in wound dressing. First, we described the methods for synthesizing hydrogel wound dressings with ionizing radiation. Then, standard methods of characterization of hydrogel wound dressings such as gel fraction, swelling degree, sol-gel analysis, rheological properties, morphology, moisture retention capability, and water vapor transmission rate have been investigated. In the end, specific attention was paid to the drug release, antibacterial performance, and cytotoxicity of hydrogels. Moreover, the application of hydrogel in regenerative medicine as wound healing dressing was covered.
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23
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Luan X, Kong H, He P, Yang G, Zhu D, Guo L, Wei G. Self-Assembled Peptide-Based Nanodrugs: Molecular Design, Synthesis, Functionalization, and Targeted Tumor Bioimaging and Biotherapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205787. [PMID: 36440657 DOI: 10.1002/smll.202205787] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Functional nanomaterials as nanodrugs based on the self-assembly of inorganics, polymers, and biomolecules have showed wide applications in biomedicine and tissue engineering. Ascribing to the unique biological, chemical, and physical properties of peptide molecules, peptide is used as an excellent precursor material for the synthesis of functional nanodrugs for highly effective cancer therapy. Herein, recent progress on the design, synthesis, functional regulation, and cancer bioimaging and biotherapy of peptide-based nanodrugs is summarized. For this aim, first molecular design and controllable synthesis of peptide nanodrugs with 0D to 3D structures are presented, and then the functional customization strategies for peptide nanodrugs are presented. Then, the applications of peptide-based nanodrugs in bioimaging, chemotherapy, photothermal therapy (PTT), and photodynamic therapy (PDT) are demonstrated and discussed in detail. Furthermore, peptide-based drugs in preclinical, clinical trials, and approved are briefly described. Finally, the challenges and potential solutions are pointed out on addressing the questions of this promising research topic. This comprehensive review can guide the motif design and functional regulation of peptide nanomaterials for facile synthesis of nanodrugs, and further promote their practical applications for diagnostics and therapy of diseases.
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Affiliation(s)
- Xin Luan
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Hao Kong
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Peng He
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Guozheng Yang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Danzhu Zhu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Lei Guo
- Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao, 266071, P. R. China
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
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Huang CL, Huang HY, Lu YC, Cheng CJ, Lee TM. Development of a flexible film made of polyvinyl alcohol with chitosan based thermosensitive hydrogel. J Dent Sci 2023; 18:822-832. [PMID: 37021246 PMCID: PMC10068578 DOI: 10.1016/j.jds.2023.01.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/08/2023] [Indexed: 01/22/2023] Open
Abstract
Background/purpose A challenge that arises with periodontal regeneration surgery has been associated with the future development of periodontal regeneration membrane to prevent gingiva and fibroblasts invade the wound and allow alveolar bone successfully regenerated. Materials and methods Chitosan (CS) has the advantages of non-toxicity, biodegradation, biocompatibility, and has been widely used in wound dressings. A flexible film was made using polyvinyl alcohol (PVA) blending CS based thermosensitive hydrogel. Results The proposed 2% PVA/CS hydrogel has the highest swelling ratio about 720% after 60 min incubation and keeps its area after 10 min incubation for surgery suture. The elastic modulus of 0%, 1%, 2%, and 4% PVA/CS hydrogel were 7.75 ± 1.96, 0.91 ± 0.16, 0.75 ± 0.21, and 0.37 ± 0.06 MPa, respectively. The maximum strain of 2% PVA/CS hydrogel was 101.00 ± 28.03 (%). After 8 weeks biodegradation, the remain weight of 2% PVA/CS hydrogel was 71.36 ± 0.79 (%). Conclusion In vitro cytotoxicity tests were performed and demonstrated PVA/CS hydrogel significantly improving cell proliferation. This study realized a promising flexible film for periodontal regeneration membrane that can prevent the rapid growth of fibroblasts to invade the wound and be used for periodontal regeneration surgery.
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Affiliation(s)
- Chih-Ling Huang
- Center for Fundamental Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsun-Yu Huang
- Division of Periodontics, Department of Dentistry, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
| | - Yu-Chen Lu
- Institute of Oral Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chia-Jung Cheng
- Division of Periodontics, Department of Dentistry, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi, Taiwan
- Corresponding author. Division of Periodontics, Department of Dentistry, Ditmanson Medical Foundation Chia-Yi Christian Hospital, No. 539, Zhongxiao Road, Chiayi 600, Taiwan.
| | - Tzer-Min Lee
- Institute of Oral Medicine, National Cheng Kung University, Tainan, Taiwan
- School of Dentistry, National Cheng Kung University, Tainan, Taiwan
- Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu, Taiwan
- Corresponding author. Institute of Oral Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan.
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25
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Sklenářová R, Akla N, Latorre MJ, Ulrichová J, Franková J. Collagen as a Biomaterial for Skin and Corneal Wound Healing. J Funct Biomater 2022; 13:jfb13040249. [PMID: 36412890 PMCID: PMC9680244 DOI: 10.3390/jfb13040249] [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: 10/24/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022] Open
Abstract
The cornea and the skin are two organs that form the outer barrier of the human body. When either is injured (e.g., from surgery, physical trauma, or chemical burns), wound healing is initiated to restore integrity. Many cells are activated during wound healing. In particular, fibroblasts that are stimulated often transition into repair fibroblasts or myofibroblasts that synthesize extracellular matrix (ECM) components into the wound area. Control of wound ECM deposition is critical, as a disorganized ECM can block restoration of function. One of the most abundant structural proteins in the mammalian ECM is collagen. Collagen type I is the main component in connective tissues. It can be readily obtained and purified, and short analogs have also been developed for tissue engineering applications, including modulating the wound healing response. This review discusses the effect of several current collagen implants on the stimulation of corneal and skin wound healing. These range from collagen sponges and hydrogels to films and membranes.
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Affiliation(s)
- Renáta Sklenářová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University in Olomouc, 775 15 Olomouc, Czech Republic
- Maisonneuve-Rosemont Hospital Research Centre, Montréal, QC H1T 2M4, Canada
| | - Naoufal Akla
- Maisonneuve-Rosemont Hospital Research Centre, Montréal, QC H1T 2M4, Canada
- Department of Ophthalmology, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | | | - Jitka Ulrichová
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University in Olomouc, 775 15 Olomouc, Czech Republic
| | - Jana Franková
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacký University in Olomouc, 775 15 Olomouc, Czech Republic
- Correspondence:
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Gajbhiye S, Wairkar S. Collagen fabricated delivery systems for wound healing: A new roadmap. BIOMATERIALS ADVANCES 2022; 142:213152. [PMID: 36270159 DOI: 10.1016/j.bioadv.2022.213152] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
Collagen is a biopolymer found in the animal body. It is one of the most abundant proteins in the extracellular matrix that provides strength to the skin, joints, and bones in the human body. It is an important source of elasticity and strength in the extracellular matrix and contributes to the structural and physiological integrity of tissues. Collagen plays an important role in regulating the wound healing process. It helps in wound healing by attracting fibroblasts and encouraging new collagen formation in the wound bed. Therefore, it can be used as a supplementary aid for wound treatment to accelerate the healing process. A prominent benefit of incorporating collagen in wound dressings is its ability to enhance the healing process for critical wounds. Not only collagen but various collagen-containing systems are being prepared to boost its efficacy in wound healing. Different strategies like nanoscale reductions, biopolymers, and incorporating anti-inflammatory and antimicrobial drugs with collagen have been reported. This review article emphasizes the use of collagen for wound healing and various collagen fabricated delivery systems such as nanofibres, nanoparticles, hydrogels, films, and sponges that aid in the healing of wounds.
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Affiliation(s)
- Shruti Gajbhiye
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKMs NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai, Maharashtra 400056, India
| | - Sarika Wairkar
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKMs NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai, Maharashtra 400056, India.
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27
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Meganathan I, Pachaiyappan M, Aarthy M, Radhakrishnan J, Mukherjee S, Shanmugam G, You J, Ayyadurai N. Recombinant and genetic code expanded collagen-like protein as a tailorable biomaterial. MATERIALS HORIZONS 2022; 9:2698-2721. [PMID: 36189465 DOI: 10.1039/d2mh00652a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Collagen occurs in nature with a dedicated triple helix structure and is the most preferred biomaterial in commercialized medical products. However, concerns on purity, disease transmission, and the reproducibility of animal derived collagen restrict its applications and warrants alternate recombinant sources. The expression of recombinant collagen in different prokaryotic and eukaryotic hosts has been reported with varying degrees of success, however, it is vital to elucidate the structural and biological characteristics of natural collagen. The recombinant production of biologically functional collagen is restricted by its high molecular weight and post-translational modification (PTM), especially the hydroxylation of proline to hydroxyproline. Hydroxyproline plays a key role in the structural stability and higher order self-assembly to form fibrillar matrices. Advancements in synthetic biology and recombinant technology are being explored for improving the yield and biomimicry of recombinant collagen. It emerges as reliable, sustainable source of collagen, promises tailorable properties and thereby custom-made protein biomaterials. Remarkably, the evolutionary existence of collagen-like proteins (CLPs) has been identified in single-cell organisms. Interestingly, CLPs exhibit remarkable ability to form stable triple helical structures similar to animal collagen and have gained increasing attention. Strategies to expand the genetic code of CLPs through the incorporation of unnatural amino acids promise the synthesis of highly tunable next-generation triple helical proteins required for the fabrication of smart biomaterials. The review outlines the importance of collagen, sources and diversification, and animal and recombinant collagen-based biomaterials and highlights the limitations of the existing collagen sources. The emphasis on genetic code expanded tailorable CLPs as the most sought alternate for the production of functional collagen and its advantages as translatable biomaterials has been highlighted.
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Affiliation(s)
- Ilamaran Meganathan
- Division of Biochemistry and Biotechnology, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India.
| | - Mohandass Pachaiyappan
- Division of Biochemistry and Biotechnology, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India.
| | - Mayilvahanan Aarthy
- Division of Biochemistry and Biotechnology, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India.
| | - Janani Radhakrishnan
- Division of Biochemistry and Biotechnology, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Smriti Mukherjee
- Division of Organic and Bio-organic Chemistry, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India
| | - Ganesh Shanmugam
- Division of Organic and Bio-organic Chemistry, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Jingjing You
- Save Sight Institute, Sydney Medical School, University of Sydney, Australia
| | - Niraikulam Ayyadurai
- Division of Biochemistry and Biotechnology, Council of Scientific and Industrial Research (CSIR) - CLRI, Chennai, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Zhao Q, Fan L, Liu Y, Li J. Recent advances on formation mechanism and functionality of chitosan-based conjugates and their application in o/w emulsion systems: A review. Food Chem 2022; 380:131838. [PMID: 35115204 DOI: 10.1016/j.foodchem.2021.131838] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 11/12/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022]
Abstract
Chitosan is very attractive in the food industry due to its good biocompatibility and high biodegradability. In particular, it can be used as a preferred material for the fabrication of stabilizers in emulsion-based foods. However, poor solubility and antioxidant activity limit its wide application. The functionality of chitosan can be extended by forming chitosan-based conjugates, which can be used to modulate the characteristics of the oil-water interface, thereby improving the stability and performance of the o/w emulsions. This review highlights the recent progress of chitosan-based conjugates, focusing on the classification, formation mechanism and functional properties, and the applications of these conjugates in o/w emulsions are summarized. Lastly, the promising research trends and challenges of chitosan-based conjugates and their emulsion systems in this field are also discussed. This review will provide a theoretical basis for the wide application of chitosan-based conjugates in emulsion systems.
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Affiliation(s)
- Qiaoli Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Liuping Fan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yuanfa Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jinwei Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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Teixeira MC, Lameirinhas NS, Carvalho JPF, Silvestre AJD, Vilela C, Freire CSR. A Guide to Polysaccharide-Based Hydrogel Bioinks for 3D Bioprinting Applications. Int J Mol Sci 2022; 23:ijms23126564. [PMID: 35743006 PMCID: PMC9223682 DOI: 10.3390/ijms23126564] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 02/04/2023] Open
Abstract
Three-dimensional (3D) bioprinting is an innovative technology in the biomedical field, allowing the fabrication of living constructs through an approach of layer-by-layer deposition of cell-laden inks, the so-called bioinks. An ideal bioink should possess proper mechanical, rheological, chemical, and biological characteristics to ensure high cell viability and the production of tissue constructs with dimensional stability and shape fidelity. Among the several types of bioinks, hydrogels are extremely appealing as they have many similarities with the extracellular matrix, providing a highly hydrated environment for cell proliferation and tunability in terms of mechanical and rheological properties. Hydrogels derived from natural polymers, and polysaccharides, in particular, are an excellent platform to mimic the extracellular matrix, given their low cytotoxicity, high hydrophilicity, and diversity of structures. In fact, polysaccharide-based hydrogels are trendy materials for 3D bioprinting since they are abundant and combine adequate physicochemical and biomimetic features for the development of novel bioinks. Thus, this review portrays the most relevant advances in polysaccharide-based hydrogel bioinks for 3D bioprinting, focusing on the last five years, with emphasis on their properties, advantages, and limitations, considering polysaccharide families classified according to their source, namely from seaweed, higher plants, microbial, and animal (particularly crustaceans) origin.
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30
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Fan R, Cheng Y, Wang R, Zhang T, Zhang H, Li J, Song S, Zheng A. Thermosensitive Hydrogels and Advances in Their Application in Disease Therapy. Polymers (Basel) 2022; 14:polym14122379. [PMID: 35745954 PMCID: PMC9227257 DOI: 10.3390/polym14122379] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 01/27/2023] Open
Abstract
Thermosensitive hydrogels, having unique sol–gel transition properties, have recently received special research attention. These hydrogels exhibit a phase transition near body temperature. This feature is the key to their applications in human medicine. In addition, hydrogels can quickly gel at the application site with simple temperature stimulation and without additional organic solvents, cross-linking agents, or external equipment, and the loaded drugs can be retained locally to improve the local drug concentration and avoid unexpected toxicity or side effects caused by systemic administration. All of these features have led to thermosensitive hydrogels being some of the most promising and practical drug delivery systems. In this paper, we review thermosensitive hydrogel materials with biomedical application potential, including natural and synthetic materials. We describe their structural characteristics and gelation mechanism and briefly summarize the mechanism of drug release from thermosensitive hydrogels. Our focus in this review was to summarize the application of thermosensitive hydrogels in disease treatment, including the postoperative recurrence of tumors, the delivery of vaccines, the prevention of postoperative adhesions, the treatment of nervous system diseases via nasal brain targeting, wound healing, and osteoarthritis treatment.
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Affiliation(s)
- Ranran Fan
- School of Pharmacy, Bengbu Medical College, Anhui 233030, China;
| | - Yi Cheng
- College of Pharmacy, Yanbian University, Jilin 133002, China;
| | - Rongrong Wang
- School of Pharmacy, North China University of Science and Technology, Hebei 063210, China;
| | - Ting Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China;
| | - Hui Zhang
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China;
- Correspondence: (H.Z.); (J.L.); (S.S.)
| | - Jianchun Li
- School of Pharmacy, Bengbu Medical College, Anhui 233030, China;
- Correspondence: (H.Z.); (J.L.); (S.S.)
| | - Shenghan Song
- Department of Vascular Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
- Correspondence: (H.Z.); (J.L.); (S.S.)
| | - Aiping Zheng
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, China;
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31
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Nazarnezhad S, Salehi M, Samadian H, Ehtermi A, Kasaiyan N, Khastar H, Abbaszadeh-Goudarzi G, Kolarijani NR, Yeganehfard H, Ziaei H. In vitro and in vivo evaluation of porous alginate hydrogel containing retinoic acid for skin wound healing applications. J BIOACT COMPAT POL 2022. [DOI: 10.1177/08839115221104071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The current study’s main aim was to fabricate and evaluate alginate (Alg) hydrogel containing retinoic acid (RA) as wound healing materials. Different RA concentrations (2, 10, and 50% w/w) were incorporated into the hydrogel. The results showed that the prepared hydrogels had a porous structure with a pore size of 69.69 ± 22.1 µm for pure Alg hydrogel and 78.44 ± 27.8 µm for Alg/RA hydrogel. The swelling measurement showed that the hydrogels swelled up to 65% and the incorporation of RA reduced the degree of swelling . The in vitro studies confirmed the hemo- and biocompatibility of the Alg/RA 2% and increasing the RA concentration induced hemolysis and toxic effects. The animal studies showed that the lowest RA concentration resulted in the best treatment outcome while increasing the RA concentration suppressed the healing process. In conclusion, these results showed that RA induced wound healing process at low concentration, and the prepared hydrogel could be used as the wound healing materials.
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Affiliation(s)
- Simin Nazarnezhad
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
- Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
- Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Hadi Samadian
- Dental Implants Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Arian Ehtermi
- Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Nahid Kasaiyan
- Science and Research Branch of Islamic Azad University, Tehran, Iran
| | - Hossein Khastar
- Sexual Health and Fertility Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ghasem Abbaszadeh-Goudarzi
- Department of Medical Biotechnology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nariman Rezaei Kolarijani
- Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | | | - Heliya Ziaei
- Dentistry Faculty, Tehran University of Medical Sciences, Tehran, Iran
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Zaersabet M, Salehi Z, Hadavi M, Talesh Sasani S, Rastgoo Noestali F. Development and evaluation of bioactive 3D zein and zein/nano-hydroxyapatite scaffolds for bone tissue engineering application. Proc Inst Mech Eng H 2022; 236:785-793. [DOI: 10.1177/09544119221090726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The aim of this study is to generate and investigate biodegradable and biocompatible zein and zein/nano-hydroxyapatite composite scaffolds for bone defect healing. 3D zein scaffold was successfully fabricated using the salt-leaching method and incorporated with 12.5 wt% nHA for osteogenic differentiation of murine myoblast cell line (C2C12 cells). The scaffolds were subjected to physicochemical and biomechanical characterizations using the scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), biodegradation, porosity, mechanical tests. C2C12 cells were cultured on scaffolds and incubated for 21 days. Cell proliferation was detected by the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. Quantitative real-time PCR was used to test the expression of osteoblastic-related genes including Runx2, ALP, and Col1A1. The scaffolds had an adequate mean pore size and a total porosity of 61.1%–70.6%. The addition of 12.5 wt% nHA to the zein scaffold increased the compressive modulus to 79.1 MPa and the ultimate strength to 2.7 MPa. The qRT-PCR analysis confirmed that mRNA transcript levels were significantly higher ( p < 0.05) on the zein/nHA than on the pure zein scaffold. The results suggested that the developed scaffolds could be a potential candidate for bone tissue engineering due to their promising osteoinductivity, surface topography, mechanical behavior, biodegradability.
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Affiliation(s)
- Mona Zaersabet
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
| | - Zivar Salehi
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
| | - Mahvash Hadavi
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
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Yang Y, Wang Z, Xu Y, Xia J, Xu Z, Zhu S, Jin M. Preparation of Chitosan/Recombinant Human Collagen-Based Photo-Responsive Bioinks for 3D Bioprinting. Gels 2022; 8:gels8050314. [PMID: 35621612 PMCID: PMC9141723 DOI: 10.3390/gels8050314] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 12/26/2022] Open
Abstract
Collagen and chitosan are frequently used natural biomaterials in tissue engineering. However, most collagen is derived from animal tissue, with inconsistent quality and pathogen transmittance risks. In this context, we aimed to use a reliable Type-III recombinant human collagen (RHC) as an alternative biomaterial together with chitosan to develop novel photo-responsive bioinks for three-dimensional (3D) bioprinting. RHC was modified with methacrylic anhydride to obtain the RHC methacryloyl (RHCMA) and mixed with acidified chitosan (CS) to form composites CS-RHCMA. The characterizations demonstrated that the mechanical properties and the degradation of the bioinks were tunable by introducing the CS. The printabilities improved by adding CS to RHCMA, and various structures were constructed via extrusion-based 3D printing successfully. Moreover, in vitro tests confirmed that these CS-RHCMA bioinks were biocompatible as human umbilical vein endothelial cells (HUVECs) were sustained within the constructs post-printing. The results from the current study illustrated a well-established bioinks system with the potential to construct different tissues through 3D bioprinting.
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Affiliation(s)
- Yang Yang
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; (Y.X.); (J.X.)
- Correspondence:
| | - Zixun Wang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (Z.W.); (Z.X.); (S.Z.); (M.J.)
| | - Yuanyuan Xu
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; (Y.X.); (J.X.)
| | - Jingjing Xia
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; (Y.X.); (J.X.)
| | - Zhaoxian Xu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (Z.W.); (Z.X.); (S.Z.); (M.J.)
| | - Shuai Zhu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (Z.W.); (Z.X.); (S.Z.); (M.J.)
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (Z.W.); (Z.X.); (S.Z.); (M.J.)
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Long LY, Liu W, Li L, Hu C, He S, Lu L, Wang J, Yang L, Wang YB. Dissolving microneedle-encapsulated drug-loaded nanoparticles and recombinant humanized collagen type III for the treatment of chronic wound via anti-inflammation and enhanced cell proliferation and angiogenesis. NANOSCALE 2022; 14:1285-1295. [PMID: 35006234 DOI: 10.1039/d1nr07708b] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Nowadays, diabetic chronic wounds impose a heavy burden on patients and the medical system. Persistent inflammation and poor tissue remodeling severely limit the healing of chronic wounds. For these issues, the first recombinant humanized collagen type III (rhCol III) and naproxen (Nap) loaded poly(lactic-co-glycolic acid) (PLGA) nanoparticle incorporated hyaluronic acid (HA) microneedle (MN) was fabricated for diabetic chronic wound therapy. As the tailored rhCol III was synthesized based on the Gly483-Pro512 segment, which contained the highly adhesive fragments (GER, GEK) in the human collagen type III sequence, it possessed strong cell adhesion. The mechanical strength of the prepared MN was enough to overcome the tissue barrier of necrosis/hyperkeratosis in a minimally invasive way after being applied in wounds. Subsequently, rhCol III and Nap@PLGA nanoparticles were rapidly released to the wound site within a few minutes. The prepared MN possessed favourable biocompatibility and could effectively facilitate the proliferation and migration of fibroblasts and endothelial cells. Furthermore, the regenerative efficacy of the MN was evaluated in vivo using the diabetic rat full-thickness skin wound model. These results illustrated that the prepared MN could accelerate wound closure by reducing the inflammatory response and enhancing angiogenesis or collagen deposition, indicating their significant application value in wound dressings for chronic wound repair.
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Affiliation(s)
- Lin-Yu Long
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China.
| | - Wenqi Liu
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China.
| | - Li Li
- Institute of Clinical Pathology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Cheng Hu
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China.
| | - Shuyi He
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China.
| | - Lu Lu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences and Shanghai Public Health Clinical Center, Fudan-Jinbo Joint Research Center, Fudan University, Shanghai, 200302, China
| | - Jian Wang
- Shanxi Jinbo Bio-Pharmaceutical Co., Ltd, Taiyuan, 030032, China
| | - Li Yang
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China.
| | - Yun-Bing Wang
- National Engineering Research Center for Biomaterials, Chuanda-Jinbo Joint Research Center, Sichuan University, Chengdu, 610064, China.
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Zielińska A, Eder P, Rannier L, Cardoso JC, Severino P, Silva AM, Souto EB. Hydrogels for modified-release drug delivery systems. Curr Pharm Des 2021; 28:609-618. [PMID: 34967292 DOI: 10.2174/1381612828666211230114755] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 12/02/2021] [Indexed: 11/22/2022]
Abstract
Hydrogels for the modified-release drug delivery systems is a continuously growing area of interest for the pharmaceutical industry. According to the global market, the use of polymers in this area is projected to reach $31.4 million by 2027. This review discusses the recent advances and perspectives of hydrogel in drug delivery systems for oral, parenteral, nasal, topical, and ophthalmic. The search strategy did in January 2021, and it conducted an extensive database to identify studies published from January 2010 to December 2020.We described the main characteristic of the polymers to obtain an ideal hydrogel for a specific route of administration and the formulations that was a highlight in the literature. It concluded that the hydrogels are a set useful to decrease the number of doses, side effects, promote adhesion of patient and enhances the bioavailability of the drugs improving the safety and efficacy of the treatment.
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Affiliation(s)
- Aleksandra Zielińska
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszyńska 32, 60-479 Poznań, Poland
| | - Piotr Eder
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355 Poznań, Poland
| | - Lucas Rannier
- Institute of Technology and Research and University of Tiradentes, Aracaju, Sergipe, Brazil
| | - Juliana C Cardoso
- Institute of Technology and Research and University of Tiradentes, Aracaju, Sergipe, Brazil
| | - Patrícia Severino
- Institute of Technology and Research and University of Tiradentes, Aracaju, Sergipe, Brazil
- Tiradentes Institute, 150 Mt Vernon St, Dorchester, MA 02125, USA
| | - Amélia M Silva
- Department of Biology and Environment, School of Life Sciences and Environment, University of Trás-os-Montes and Alto Douro (UTAD); 5001-801 Vila Real, Portugal
- Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB), UTAD, 5001-801 Vila Real, Portugal
| | - Eliana B Souto
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal
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Zhang F, Yin C, Qi X, Guo C, Wu X. Silk fibroin crosslinked glycyrrhizic acid and silver hydrogels for accelerated bacteria-infected wound healing. Macromol Biosci 2021; 22:e2100407. [PMID: 34939312 DOI: 10.1002/mabi.202100407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/15/2021] [Indexed: 11/11/2022]
Abstract
Antibacterial hydrogels have been intensively studied as wound dressings. Silk fibroin (SF) was chemical crosslinked to glycyrrhizic acid (GA) and silver to fabricate a hydrogel dressing with both antibacterial and anti-inflammatory properties. The SF/Ag/GA hydrogel exhibited high water content with acceptable mechanical properties, combined the good biocompatibility and biodegradability of SF, the antibacterial activity of silver, and the anti-inflammatory property of GA, capable to promote tissue regeneration during wound healing process, offering great potential as an alternative for wound dressings. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Fan Zhang
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Zhengzhou Road 53, Qingdao, 266042, China
| | - Chuanjin Yin
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Zhengzhou Road 53, Qingdao, 266042, China
| | - Xueju Qi
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Zhengzhou Road 53, Qingdao, 266042, China
| | - Chuanlong Guo
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Zhengzhou Road 53, Qingdao, 266042, China
| | - Xiaochen Wu
- Department of Pharmacy, College of Chemical Engineering, Qingdao University of Science and Technology, Zhengzhou Road 53, Qingdao, 266042, China
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Moore MJ, Tan RP, Yang N, Rnjak-Kovacina J, Wise SG. Bioengineering artificial blood vessels from natural materials. Trends Biotechnol 2021; 40:693-707. [PMID: 34887104 DOI: 10.1016/j.tibtech.2021.11.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 01/22/2023]
Abstract
Bioengineering an effective, small diameter (<6 mm) artificial vascular graft for use in bypass surgery when autologous grafts are unavailable remains a persistent challenge. Commercially available grafts are typically made from plastics, which have high strength but lack elasticity and present a foreign surface that triggers undesirable biological responses. Tissue engineered grafts, leveraging decellularized animal vessels or derived de novo from long-term cell culture, have dominated recent research, but failed to meet clinical expectations. More effective constructs that are readily translatable are urgently needed. Recent advances in natural materials have made the production of robust acellular conduits feasible and their use increasingly attractive. Here, we identify a subset of natural materials with potential to generate durable, small diameter vascular grafts.
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Affiliation(s)
- Matthew J Moore
- School of Medical Sciences, Faculty of Health and Medicine, University of Sydney, NSW 2006, Australia; Charles Perkins Centre, University of Sydney, NSW 2006, Australia
| | - Richard P Tan
- School of Medical Sciences, Faculty of Health and Medicine, University of Sydney, NSW 2006, Australia; Charles Perkins Centre, University of Sydney, NSW 2006, Australia
| | - Nianji Yang
- School of Medical Sciences, Faculty of Health and Medicine, University of Sydney, NSW 2006, Australia; Charles Perkins Centre, University of Sydney, NSW 2006, Australia
| | - Jelena Rnjak-Kovacina
- Graduate School of Biomedical Engineering, UNSW Australia, Sydney, NSW 2052, Australia
| | - Steven G Wise
- School of Medical Sciences, Faculty of Health and Medicine, University of Sydney, NSW 2006, Australia; Charles Perkins Centre, University of Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, University of Sydney, NSW 2006, Australia.
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38
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Cationic, anionic and neutral polysaccharides for skin tissue engineering and wound healing applications. Int J Biol Macromol 2021; 192:298-322. [PMID: 34634326 DOI: 10.1016/j.ijbiomac.2021.10.013] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 09/25/2021] [Accepted: 10/03/2021] [Indexed: 12/17/2022]
Abstract
Today, chronic wound care and management can be regarded as a clinically critical issue. However, the limitations of current approaches for wound healing have encouraged researchers and physicians to develop more efficient alternative approaches. Advances in tissue engineering and regenerative medicine have resulted in the development of promising approaches that can accelerate wound healing and improve the skin regeneration rate and quality. The design and fabrication of scaffolds that can address the multifactorial nature of chronic wound occurrence and provide support for the healing process can be considered an important area requiring improvement. In this regard, polysaccharide-based scaffolds have distinctive properties such as biocompatibility, biodegradability, high water retention capacity and nontoxicity, making them ideal for wound healing applications. Their tunable structure and networked morphology could facilitate a number of functions, such as controlling their diffusion, maintaining wound moisture, absorbing a large amount of exudates and facilitating gas exchange. In this review, the wound healing process and the influential factors, structure and properties of carbohydrate polymers, physical and chemical crosslinking of polysaccharides, scaffold fabrication techniques, and the use of polysaccharide-based scaffolds in skin tissue engineering and wound healing applications are discussed.
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Porous Bilayer Vascular Grafts Fabricated from Electrospinning of the Recombinant Human Collagen (RHC) Peptide-Based Blend. Polymers (Basel) 2021; 13:polym13224042. [PMID: 34833340 PMCID: PMC8619216 DOI: 10.3390/polym13224042] [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] [Received: 10/24/2021] [Revised: 11/10/2021] [Accepted: 11/12/2021] [Indexed: 12/18/2022] Open
Abstract
Cardiovascular diseases, including coronary artery and peripheral vascular pathologies, are leading causes of mortality. As an alternative to autografts, prosthetic grafts have been developed to reduce the death rate. This study presents the development and characterization of bilayer vascular grafts with appropriate structural and biocompatibility properties. A polymer blend of recombinant human collagen (RHC) peptides and polycaprolactone (PCL) was used to build the inner layer of the graft by electrospinning and co-electrospinning the water-soluble polyethylene oxide (PEO) as sacrificial material together with PCL to generate the porous outer layer. The mechanical test demonstrated the bilayer scaffold’s appropriate mechanical properties as compared with the native vascular structure. Human umbilical vein endothelial cells (HUVEC) showed enhanced adhesion to the lumen after seeding on nanoscale fibers. Meanwhile, by enhancing the porosity of the microfibrous outer layer through the removal of PEO fibers, rat smooth muscle cells (A7r5) could proliferate and infiltrate the porous layer easily.
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Su J, Li J, Liang J, Zhang K, Li J. Hydrogel Preparation Methods and Biomaterials for Wound Dressing. Life (Basel) 2021; 11:life11101016. [PMID: 34685387 PMCID: PMC8540918 DOI: 10.3390/life11101016] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/13/2022] Open
Abstract
Wounds have become one of the causes of death worldwide. The metabolic disorder of the wound microenvironment can lead to a series of serious symptoms, especially chronic wounds that bring great pain to patients, and there is currently no effective and widely used wound dressing. Therefore, it is important to develop new multifunctional wound dressings. Hydrogel is an ideal dressing candidate because of its 3D structure, good permeability, excellent biocompatibility, and ability to provide a moist environment for wound repair, which overcomes the shortcomings of traditional dressings. This article first briefly introduces the skin wound healing process, then the preparation methods of hydrogel dressings and the characteristics of hydrogel wound dressings made of natural biomaterials and synthetic materials are introduced. Finally, the development prospects and challenges of hydrogel wound dressings are discussed.
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Affiliation(s)
- Jingjing Su
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
| | - Jiankang Li
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
| | - Jiaheng Liang
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
| | - Kun Zhang
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
- Correspondence: (K.Z.); (J.L.); Tel.:+86-185-3995-8495 (K.Z.); +86-185-3995-6211 (J.L.)
| | - Jingan Li
- School of Materials Science and Engineering, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China
- Correspondence: (K.Z.); (J.L.); Tel.:+86-185-3995-8495 (K.Z.); +86-185-3995-6211 (J.L.)
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Youssef JR, Boraie NA, Ibrahim HF, Ismail FA, El-Moslemany RM. Glibenclamide Nanocrystal-Loaded Bioactive Polymeric Scaffolds for Skin Regeneration: In Vitro Characterization and Preclinical Evaluation. Pharmaceutics 2021; 13:1469. [PMID: 34575545 PMCID: PMC8469322 DOI: 10.3390/pharmaceutics13091469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/02/2021] [Accepted: 09/09/2021] [Indexed: 01/02/2023] Open
Abstract
Skin restoration following full-thickness injury poses significant clinical challenges including inflammation and scarring. Medicated scaffolds formulated from natural bioactive polymers present an attractive platform for promoting wound healing. Glibenclamide was formulated in collagen/chitosan composite scaffolds to fulfill this aim. Glibenclamide was forged into nanocrystals with optimized colloidal properties (particle size of 352.2 nm, and polydispersity index of 0.29) using Kolliphor as a stabilizer to allow loading into the hydrophilic polymeric matrix. Scaffolds were prepared by the freeze drying method using different total polymer contents (3-6%) and collagen/chitosan ratios (0.25-2). A total polymer content of 3% at a collagen/chitosan ratio of 2:1 (SCGL3-2) was selected based on the results of in vitro characterization including the swelling index (1095.21), porosity (94.08%), mechanical strength, rate of degradation and in vitro drug release. SCGL3-2 was shown to be hemocompatible based on the results of protein binding, blood clotting and percentage hemolysis assays. In vitro cell culture studies on HSF cells demonstrated the biocompatibility of nanocrystals and SCGL3-2. In vivo studies on a rat model of a full-thickness wound presented rapid closure with enhanced histological and immunohistochemical parameters, revealing the success of the scaffold in reducing inflammation and promoting wound healing without scar formation. Hence, SCGL3-2 could be considered a potential dermal substitute for skin regeneration.
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Affiliation(s)
- Julie R. Youssef
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
| | - Nabila A. Boraie
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
| | - Heba F. Ibrahim
- Department of Histology and Cell Biology, Faculty of Medicine, Alexandria University, Alexandria 21523, Egypt;
| | - Fatma A. Ismail
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
| | - Riham M. El-Moslemany
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21523, Egypt; (J.R.Y.); (N.A.B.); (F.A.I.)
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Wang J, Cai N, Chan V, Zeng H, Shi H, Xue Y, Yu F. Antimicrobial hydroxyapatite reinforced-polyelectrolyte complex nanofibers with long-term controlled release activity for potential wound dressing application. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126722] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sun L, Li M, Gong T, Feng J. Preparation and evaluation of an innovative antibacterial bi-layered composite dressing for skin wound healing. J Tissue Viability 2021; 30:454-461. [PMID: 33962852 DOI: 10.1016/j.jtv.2021.04.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 03/15/2021] [Accepted: 04/25/2021] [Indexed: 02/01/2023]
Abstract
AIM OF THE STUDY The aim of the current study was to develop collagen-based bi-layered composite dressings with antibacterial property and evaluate the efficiency for wound healing. MATERIALS AND METHODS A bi-layered composite wound dressing was fabricated using two marine biomacromolecules (collagen and chitosan or carboxymethyl chitosan). Non-crosslinked and N-Ethyl-N'-(3-dimethylaminopropyl) carbodiimide/N-Hydroxy succinimide (EDC/NHS) cross-linked collagen sponges fabricated by vacuum freeze-drying technology was used as the inner layer. The medical spun-laced nonwoven coated with chitosan and carboxymethyl chitosan was used as the outer layer. The antibacterial activities against E. coli and S. aureus were evaluated by the inhibition zone assay. Deep second-degree scald model was performed to evaluate the efficiency of bi-layered composite dressings for wound healing. RESULTS In view of comprehensive evaluation of appearance and in vitro antibacterial activity, medical spun-laced nonwoven coated with 3% of chitosan solution was chosen to be used as the optimized preparation conditions to produce the outer layer of composite dressing, which acted as a barrier against microorganisms and provided mechanical support. Furthermore, the results of wound closure and histopathological analysis indicated that EDC/NHS cross-linked collagen-based bi-layered composite dressing was superior to non-crosslinked and commercial products, which stimulated the wound healing process and accomplished deep second-degree scalded skin healing within a time span of 28 days. CONCLUSION The EDC/NHS cross-linked collagen-based bi-layered composite dressing had immense potential to be applied for an ideal wound dressing for more efficient and faster wound healing. Therefore, the findings provided the essential theoretical basis for great potential of collagen-based composite dressing used in wound healing applications.
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Affiliation(s)
- Leilei Sun
- College of Life Science, Yantai University, No.30, Qing Quan Road, Yantai, Shandong Province, 264005, PR China.
| | - Mingbo Li
- College of Life Science, Yantai University, No.30, Qing Quan Road, Yantai, Shandong Province, 264005, PR China
| | - Tengfei Gong
- Weihai Food and Drug Inspection Testing Center, No.52, Xin Wei Road, Weihai, Shandong Province, 264200, PR China
| | - Jianling Feng
- Weihai Food and Drug Inspection Testing Center, No.52, Xin Wei Road, Weihai, Shandong Province, 264200, PR China
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Kudłacik-Kramarczyk S, Drabczyk A, Głąb M, Alves-Lima D, Lin H, Douglas TEL, Kuciel S, Zagórska A, Tyliszczak B. Investigations on the impact of the introduction of the Aloe vera into the hydrogel matrix on cytotoxic and hydrophilic properties of these systems considered as potential wound dressings. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111977. [PMID: 33812605 DOI: 10.1016/j.msec.2021.111977] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 02/08/2021] [Accepted: 02/11/2021] [Indexed: 11/29/2022]
Abstract
In the paper, synthesis of chitosan-based hydrogels modified with Aloe vera juice is presented. The novelty of the research was a combination of hydrogel materials with properties beneficial in viewpoint of their use as modern wound dressings and Aloe vera juice supporting the wound healing process. Hydrogels have been obtained via UV radiation. The impact of the amount of the crosslinking agent as well as the introduction of the Aloe vera juice into the hydrogel matrix has been determined. Performed measurements involved analysis of the swelling ability, characteristics of the surface roughness, determining the release profile of Aloe vera and the contact angles of hydrogels. Furthermore, the analysis of the dehydration process of the polymer membrane, investigations on the cytotoxicity of hydrogels via MTT reduction assay and the neutral red uptake assay as well as the studies on the pro-inflammatory activity have also been performed. It was proved that the addition of Aloe vera juice improves the hydrophilic properties of the materials (e.g. contact angle changed from 82.5° to 73.0°). Next, the use of 25% more of the crosslinker resulted even in the increase of the contact angle by 86%. Modified hydrogels showed higher swelling properties even by 15% than unmodified materials. Furthermore, obtained hydrogels show an ability to release Aloe vera - after 5 h approx. 80% of this additive has been released in an acidic environment. Tested materials do not exhibit cytotoxic properties, the addition of Aloe vera results in an improvement of the viability of L929 murine fibroblasts and, importantly, these materials show lower pro-inflammatory activity than the positive control. Performed investigations allow to state that obtained materials show a great application potential.
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Affiliation(s)
- S Kudłacik-Kramarczyk
- Cracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, 37 Jana Pawła II Av., 31-864 Krakow, Poland.
| | - A Drabczyk
- Cracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, 37 Jana Pawła II Av., 31-864 Krakow, Poland.
| | - M Głąb
- Cracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, 37 Jana Pawła II Av., 31-864 Krakow, Poland
| | - D Alves-Lima
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK
| | - H Lin
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK
| | - T E L Douglas
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK; Materials Science Institute (MSI), Lancaster University, UK
| | - S Kuciel
- Cracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, 37 Jana Pawła II Av., 31-864 Krakow, Poland
| | - A Zagórska
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Kraków, Poland
| | - B Tyliszczak
- Cracow University of Technology, Faculty of Materials Engineering and Physics, Institute of Materials Science, 37 Jana Pawła II Av., 31-864 Krakow, Poland.
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Kulkarni N, Shinde SD, Jadhav GS, Adsare DR, Rao K, Kachhia M, Maingle M, Patil SP, Arya N, Sahu B. Peptide-Chitosan Engineered Scaffolds for Biomedical Applications. Bioconjug Chem 2021; 32:448-465. [PMID: 33656319 DOI: 10.1021/acs.bioconjchem.1c00014] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Peptides are signaling epitopes that control many vital biological events. Increased specificity, synthetic feasibility with concomitant lack of toxicity, and immunogenicity make this emerging class of biomolecules suitable for different applications including therapeutics, diagnostics, and biomedical engineering. Further, chitosan, a naturally occurring linear polymer composed of d-glucosamine and N-acetyl-d-glucosamine units, possesses anti-microbial, muco-adhesive, and hemostatic properties along with excellent biocompatibility. As a result, chitosan finds application in drug/gene delivery, tissue engineering, and bioimaging. Despite these applications, chitosan demonstrates limited cell adhesion and lacks biosignaling. Therefore, peptide-chitosan hybrids have emerged as a new class of biomaterial with improved biosignaling properties and cell adhesion properties. As a result, recent studies encompass increased application of peptide-chitosan hybrids as composites or conjugates in drug delivery, cell therapy, and tissue engineering and as anti-microbial material. This review discusses the recent investigations involving chitosan-peptide materials and uncovers various aspects of these interesting hybrid materials for biomedical applications.
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Yang Y, Campbell Ritchie A, Everitt NM. Recombinant human collagen/chitosan-based soft hydrogels as biomaterials for soft tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111846. [PMID: 33579509 DOI: 10.1016/j.msec.2020.111846] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 11/15/2020] [Accepted: 12/28/2020] [Indexed: 12/15/2022]
Abstract
Animal-derived collagen may contain viruses, and its impurity can cause immunological reactions. Chitosan, always required a neutralization step in fabricating it into the biocompatible tissue engineering scaffolds. To avoid these risks and simplify the production process, a series of recombinant human collagen/carboxylated chitosan (RHC-CHI) based soft hydrogel scaffolds were prepared by crosslinking-induced gelation and then investigated their feasibilities for use as soft tissue engineering scaffolds. The gelation time was optimized by modulating the biopolymer concentration or reaction temperature. The hydrogel swelling, degradation rate, and mechanical properties were also investigated. The results showed that these parameters could be tuned by adjusting either the RHC-to-chitosan ratio or the total polymer concentration. The mechanical properties of the hydrogels were improved by adding chitosan, but excess chitosan reduced the hydrogel mechanical strength and accelerated the degradation speed. Cytotoxicity tests showed that all fabricated soft hydrogels were biocompatible and displayed no cytotoxicity. Cytocompatibility tests and qRT-PCR studies indicated that the hydrogel system promoted the adhesion and proliferation of NIH-3T3 cells, and cellular activities were directly up-regulated by RHC. Finally, our in vivo study proved these hydrogels were able to accelerate the cell infiltration and wound closure. These results show that the soft RHC-CHI hydrogels show promise in soft-tissue engineering.
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Affiliation(s)
- Yang Yang
- Bioengineering Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Alastair Campbell Ritchie
- Bioengineering Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Nicola M Everitt
- Bioengineering Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
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Wang H, Liu Y, Cai K, Zhang B, Tang S, Zhang W, Liu W. Antibacterial polysaccharide-based hydrogel dressing containing plant essential oil for burn wound healing. BURNS & TRAUMA 2021; 9:tkab041. [PMID: 34988231 PMCID: PMC8693078 DOI: 10.1093/burnst/tkab041] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/06/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Polysaccharide-based hydrogels have been developed for many years to treat burn wounds. Essential oils extracted from aromatic plants generally exhibit superior biological activity, especially antibacterial properties. Studies have shown that antibacterial hydrogels mixed with essential oils have great potential for burn wound healing. This study aimed to develop an antibacterial polysaccharide-based hydrogel with essential oil for burn skin repair. METHODS Eucalyptus essential oil (EEO), ginger essential oil (GEO) and cumin essential oil (CEO) were employed for the preparation of effective antibacterial hydrogels physically crosslinked by carboxymethyl chitosan (CMC) and carbomer 940 (CBM). Composite hydrogels were prepared and characterized using antimicrobial activity studies, Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, gas chromatography-mass spectrometery, rheological analysis, viscosity, swelling, water loss rate and water vapor transmission rate studies. In addition, the biocompatibility of hydrogels was evaluated in vivo by cytotoxicity and cell migration assays and the burn healing ability of hydrogels was tested in vivo using burn-induced wounds in mice. RESULTS The different essential oils exhibited different mixing abilities with the hydrogel matrix (CMC and CBM), which caused varying levels of reduction in essential oil hydrogel viscosity, swelling and water vapor transmission. Among the developed hydrogels, the CBM/CMC/EEO hydrogel exhibited optimal antibacterial activities of 46.26 ± 2.22% and 63.05 ± 0.99% against Staphylococcus aureus and Escherichia coli, respectively, along with cell viability (>92.37%) and migration activity. Furthermore, the CBM/CMC/EEO hydrogel accelerated wound healing in mouse burn models by promoting the recovery of dermis and epidermis as observed using a hematoxylin-eosin and Masson's trichrome staining assay. The findings from an enzyme-linked immunosorbent assay demonstrated that the CBM/CMC/EEO hydrogel could repair wounds through interleukin-6 and tumor necrosis factor-α downregulation and transforming growth factor-β, vascular endothelial growth factor (VEGF) and epidermal growth factor upregulation. CONCLUSIONS This study successfully prepared a porous CBM/CMC/EEO hydrogel with high antibacterial activity, favorable swelling, optimal rheological properties, superior water retention and water vapor transmission performance and a significant effect on skin repair in vitro and in vivo. The results indicate that the CBM/CMC/EEO hydrogel has the potential for use as a promising burn dressing material for skin burn repair.
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Affiliation(s)
- Huanhuan Wang
- Department of Biology & Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, College of Science, Shantou University, Shantou, Guangdong, 515063, P.R. China
| | | | - Kun Cai
- Department of Biology & Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, College of Science, Shantou University, Shantou, Guangdong, 515063, P.R. China
| | - Bin Zhang
- Department of Biology & Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, College of Science, Shantou University, Shantou, Guangdong, 515063, P.R. China
| | - Shijie Tang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, 515063, P.R. China
| | - Wancong Zhang
- Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, 515063, P.R. China
| | - Wenhua Liu
- Department of Biology & Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, College of Science, Shantou University, Shantou, Guangdong, 515063, P.R. China
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Khayrova A, Lopatin S, Varlamov V. Obtaining chitin, chitosan and their melanin complexes from insects. Int J Biol Macromol 2020; 167:1319-1328. [PMID: 33202268 DOI: 10.1016/j.ijbiomac.2020.11.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 12/23/2022]
Abstract
Interest in insects as a source of valuable biologically active substances has significantly increased over the past few years. Insects serve as an alternative source of chitin, which forms up to 40% of their exoskeleton. Chitosan, a deacetylated derivative of chitin, attracts the attention of scientists due to its unique properties (sorption, antimicrobial, film-forming, wound healing). Furthermore, some insect species are unique and can be used to obtain chitin- and chitosan-melanin complexes in the later stages of ontogenesis. Due to the synergistic effect, chitosan and melanin can enhance each other's biological activity, providing a wide range of potential applications.
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Affiliation(s)
- Adelya Khayrova
- Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia.
| | - Sergey Lopatin
- Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia
| | - Valery Varlamov
- Research Centre of Biotechnology of the Russian Academy of Sciences, Leninsky prospect, 33, build. 2, 119071 Moscow, Russia
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