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Liu Y, Lang C, Zhang K, Feng L, Li J, Wang T, Sun S, Sun G. Injectable chitosan-polyvinylpyrrolidone composite thermosensitive hydrogels with sustained submucosal lifting for endoscopic submucosal dissection. Int J Biol Macromol 2024:133165. [PMID: 38901518 DOI: 10.1016/j.ijbiomac.2024.133165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/30/2024] [Accepted: 06/12/2024] [Indexed: 06/22/2024]
Abstract
To develop a submucosal injection material with sustained submucosal lifting for endoscopic submucosal dissection (ESD), this study designed and prepared a novel composite thermosensitive hydrogel system with high pH chitosan-polyvinylpyrrolidone-β-glycerophosphate (HpHCS-PVP-GP). HpHCS improved the injectability of the hydrogels and retained the rapid gelation ability at low concentrations. The modification of PVP significantly improved the stability of low-temperature hydrogel precursor solutions and the integrity of hydrogels formed at 37 °C through hydrogen bonds between PVP and HpHCS. A mathematical model was established using response surface methodology (RSM) to evaluate the synergistic effect of HpHCS, GP, and PVP concentrations on gelation time. This RSM model and submucosal lifting evaluation using in vitro pig esophageal models were used to determine the optimal formula of HpHCS-PVP-GP hydrogels. Although the higher PVP concentration (5 % (w/v)) prolonged gelation time, it improved hydrogel mechanical strength, resulting in better submucosal lifting performance. The experiments of Bama mini pigs showed that the heights of the cushions elevated by the HpHCS-5%PVP-GP hydrogel remained about 80 % 1 h after injection. Repeated injections were avoided, and the hydrogel had no cytotoxicity after electric cutting. Therefore, the HpHCS-PVP-GP thermosensitive hydrogel might be a promising submucosal injection material for ESD.
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Affiliation(s)
- Yang Liu
- Innovative Engineering Technology Research Center for Cell Therapy, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China; Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China
| | - Chuang Lang
- Innovative Engineering Technology Research Center for Cell Therapy, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China
| | - Kai Zhang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China
| | - Linlin Feng
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China
| | - Junying Li
- Innovative Engineering Technology Research Center for Cell Therapy, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China
| | - Tingting Wang
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China
| | - Siyu Sun
- Innovative Engineering Technology Research Center for Cell Therapy, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China; Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China.
| | - Guangwei Sun
- Innovative Engineering Technology Research Center for Cell Therapy, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China; Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110022, People's Republic of China.
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2
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Cao M, Wang F, Ma S, Bashir S, Liu S, Sun K, Xing B. Deciphering the Impact of ZnO Nanoparticles and a Sunscreen Product Containing ZnO on Phosphorus Dynamics and Release in Chlorella pyrenoidosa in Aquatic Systems. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:10262-10274. [PMID: 38809112 DOI: 10.1021/acs.est.4c01126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Zinc oxide nanoparticles (ZnO NPs) expedite the conversion of organic phosphorus (OP) into PO4-P (Pi), facilitating phosphorus (P) absorption by algae. Our study explored the mechanisms of converting OP (2-aminoethylphosphonic acid (AEP) and β-glycerol phosphate (β-GP)) into Pi in Chlorella pyrenoidosa under P deficiency with sunscreen and ZnO NPs. Cell density followed the order of K2HPO4 > β-GP+ZnO > β-GP > AEP+ZnO > AEP > P-free. ZnO NPs promoted the conversion of β-GP, containing C-O-P bonds (0.028-0.041 mg/L), into Pi more efficiently than AEP, which possesses C-P bonds (0.022-0.037 mg/L). Transcriptomics revealed Pi transport/metabolism (phoB (3.99-12.01 fold), phoR (2.20-5.50 fold), ppa (4.49-10.40 fold), and ppk (2.50-5.40 fold)) and phospholipid metabolism (SQD1 (1.85-2.79 fold), SQD2 (2.60-6.53 fold), MGD (2.13-3.21 fold), and DGD (4.08-7.56 fold)) were up-regulated compared to K2HPO4. 31P nuclear magnetic resonance spectroscopy identified intracellular P as polyphosphate, orthophosphate, and pyrophosphate. Synchrotron radiation-based X-ray near-edge structure spectroscopy indicated that K2HPO4 and Zn3(PO4)2 in β-GP+ZnO were increased by 8.09% and 7.28% compared to AEP+ZnO, suggesting superior P storage in β-GP+ZnO. Overall, ZnO NPs improved photoinduced electron-hole pair separation and charge separation efficiency and amplified the ·OH and ·O2- levels, promoting OP photoconversion into Pi and algae growth.
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Affiliation(s)
- Manman Cao
- School of Environment, Beijing Normal University, 19 Xinjiekouwai Street Beijing 100875, China
| | - Fei Wang
- School of Environment, Beijing Normal University, 19 Xinjiekouwai Street Beijing 100875, China
| | - Shuai Ma
- School of Environment, Beijing Normal University, 19 Xinjiekouwai Street Beijing 100875, China
| | - Safdar Bashir
- Department of Soil and Environmental Sciences, Ghazi University, Dera Ghazi Khan 32000, Pakistan
| | - Shuhu Liu
- Laboratory of Synchrotron Radiation, Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China
| | - Ke Sun
- School of Environment, Beijing Normal University, 19 Xinjiekouwai Street Beijing 100875, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst Massachusetts 01003, United States
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Kocak FZ, Yar M, Rehman IU. In vitro degradation, swelling, and bioactivity performances of in situ forming injectable chitosan-matrixed hydrogels for bone regeneration and drug delivery. Biotechnol Bioeng 2024. [PMID: 38837342 DOI: 10.1002/bit.28755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 12/25/2023] [Accepted: 05/12/2024] [Indexed: 06/07/2024]
Abstract
Injectable, tissue mimetic, bioactive, and biodegradable hydrogels offer less invasive regeneration and repair of tissues. The monitoring swelling and in vitro degradation capacities of hydrogels are highly important for drug delivery and tissue regeneration processes. Bioactivity of bone tissue engineered constructs in terms of mineralized apatite formation capacity is also pivotal. We have previously reported in situ forming chitosan-based injectable hydrogels integrated with hydroxyapatite and heparin for bone regeneration, promoting angiogenesis. These hydrogels were functionalized by glycerol and pH to improve their mechano-structural properties. In the present study, functionalized hybrid hydrogels were investigated for their swelling, in vitro degradation, and bioactivity performances. Hydrogels have degraded gradually in phosphate-buffered saline (PBS) with and without lysozyme enzyme. The percentage weight loss of hydrogels and their morphological and chemical properties, and pH of media were analyzed. The swelling ratio of hydrogels (55%-68%(wt), 6 h of equilibrium) indicated a high degree of cross-linking, can be suitable for controlled drug release. Hydrogels have gradually degraded reaching to 60%-70% (wt%) in 42 days in the presence and absence of lysozyme, respectively. Simulated body fluid (SBF)-treated hydrogels containing hydroxyapatite-induced needle-like carbonated-apatite mineralization was further enhanced by heparin content significantly.
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Affiliation(s)
- Fatma Zehra Kocak
- Engineering-Architecture Faculty, Metallurgy and Materials Engineering, Nevsehir Haci Bektas Veli University, Nevsehir, Turkey
- Engineering Department, Lancaster University, Lancaster, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan
| | - Ihtesham U Rehman
- School of Medicine and Dentistry, University of Central Lancashire, Lancashire, UK
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El-Nablaway M, Rashed F, Taher ES, Atia GA, Foda T, Mohammed NA, Abdeen A, Abdo M, Hînda I, Imbrea AM, Taymour N, Ibrahim AM, Atwa AM, Ibrahim SF, Ramadan MM, Dinu S. Bioactive injectable mucoadhesive thermosensitive natural polymeric hydrogels for oral bone and periodontal regeneration. Front Bioeng Biotechnol 2024; 12:1384326. [PMID: 38863491 PMCID: PMC11166210 DOI: 10.3389/fbioe.2024.1384326] [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: 02/09/2024] [Accepted: 04/19/2024] [Indexed: 06/13/2024] Open
Abstract
Periodontitis is an inflammation-related condition, caused by an infectious microbiome and host defense that causes damage to periodontium. The natural processes of the mouth, like saliva production and eating, significantly diminish therapeutic medication residency in the region of periodontal disease. Furthermore, the complexity and diversity of pathological mechanisms make successful periodontitis treatment challenging. As a result, developing enhanced local drug delivery technologies and logical therapy procedures provides the foundation for effective periodontitis treatment. Being biocompatible, biodegradable, and easily administered to the periodontal tissues, hydrogels have sparked substantial an intense curiosity in the discipline of periodontal therapy. The primary objective of hydrogel research has changed in recent years to intelligent thermosensitive hydrogels, that involve local adjustable sol-gel transformations and regulate medication release in reaction to temperature, we present a thorough introduction to the creation and efficient construction of new intelligent thermosensitive hydrogels for periodontal regeneration. We also address cutting-edge smart hydrogel treatment options based on periodontitis pathophysiology. Furthermore, the problems and prospective study objectives are reviewed, with a focus on establishing effective hydrogel delivery methods and prospective clinical applications.
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Affiliation(s)
- Mohammad El-Nablaway
- Department of Medical Biochemistry, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh, Saudi Arabia
| | - Fatema Rashed
- Department of Basic Medical and Dental Sciences, Faculty of Dentistry, Zarqa University, Zarqa, Jordan
| | - Ehab S. Taher
- Department of Basic Medical and Dental Sciences, Faculty of Dentistry, Zarqa University, Zarqa, Jordan
| | - Gamal A. Atia
- Department of Oral Medicine, Periodontology, and Diagnosis, Faculty of Dentistry, Suez Canal University, Ismailia, Egypt
| | - Tarek Foda
- Oral Health Sciences Department, Temple University’s Kornberg School of Dentistry, Philadelphia, PA, United States
| | - Nourelhuda A. Mohammed
- Physiology and Biochemistry Department, Faculty of Medicine, Mutah University, Al Karak, Jordan
| | - Ahmed Abdeen
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Benha University, Toukh, Egypt
| | - Mohamed Abdo
- Department of Animal Histology and Anatomy, School of Veterinary Medicine, Badr University in Cairo (BUC), Cairo, Egypt
| | - Ioana Hînda
- Department of Biology, Faculty of Agriculture, University of Life Sciences “King Michael I” from Timișoara, Timișoara, Romania
| | - Ana-Maria Imbrea
- Department of Biotechnology, Faculty of Bioengineering of Animal Resources, University of Life Sciences “King Mihai I” from Timisoara, Timișoara, Romania
| | - Noha Taymour
- Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman bin Faisal University, Dammam, Saudi Arabia
| | - Ateya M. Ibrahim
- Department of Administration and Nursing Education, College of Nursing, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
- Department of Family and Community Health Nursing, Faculty of Nursing, Port-Said University, Port Said, Egypt
| | - Ahmed M. Atwa
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Egyptian Russian University, Cairo, Egypt
| | - Samah F. Ibrahim
- Department of Internal Medicine, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Mahmoud M. Ramadan
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates
| | - Stefania Dinu
- Department of Pedodontics, Faculty of Dental Medicine, Victor Babes, University of Medicine and Pharmacy Timisoara, Timisoara, Romania
- Pediatric Dentistry Research Center, Faculty of Dental Medicine, Victor Babes University of Medicine and Pharmacy Timisoara, Timisoara, Romania
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Wathoni N, Suhandi C, Ghassani Purnama MF, Mutmainnah A, Nurbaniyah NS, Syafra DW, Elamin KM. Alginate and Chitosan-Based Hydrogel Enhance Antibacterial Agent Activity on Topical Application. Infect Drug Resist 2024; 17:791-805. [PMID: 38444772 PMCID: PMC10913799 DOI: 10.2147/idr.s456403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 02/06/2024] [Indexed: 03/07/2024] Open
Abstract
Untreated topical infections can become chronic, posing serious health issues. Optimal skin adherence is crucial in addressing such infections. In this context, chitosan and alginate emerge as promising candidates for use as a foundation in the development of topical hydrogels. The aim of this review is to examine the literature on topical hydrogel formulations that use chitosan and alginate as foundations, specifically in the context of topical antibacterial agents. The research methodology involves a literature review by examining articles published in databases such as PubMed, Scopus, ScienceDirect, and Google Scholar. The keywords employed during the research were "Alginate", "Chitosan", "Hydrogel", and "Antibacterial". Chitosan and alginate serve as bases in topical hydrogels to deliver various active ingredients, particularly antibacterial agents, as indicated by the search results. Both have demonstrated significant antibacterial effectiveness, as evidenced by a reduction in bacterial colony counts and an increase in inhibition zones. This strongly supports the idea that chitosan and alginate could be used together to make topical hydrogels that kill bacteria that work well. In conclusion, chitosan and alginate-based hydrogels show great potential in treating bacterial infections on the skin surface. The incorporation of chitosan and alginate into hydrogel formulations aids in retaining antibacterial agents, allowing for their gradual release over an optimal period. Therefore, hydrogels specifically formulated with chitosan and alginate have the potential to serve as a solution to address challenges in the treatment of topical bacterial infections.
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Affiliation(s)
- Nasrul Wathoni
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor, 45363, Indonesia
| | - Cecep Suhandi
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor, 45363, Indonesia
| | - Muhammad Fadhil Ghassani Purnama
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor, 45363, Indonesia
| | - Annisa Mutmainnah
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor, 45363, Indonesia
| | - Neng Sani Nurbaniyah
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor, 45363, Indonesia
| | - Desra Widdy Syafra
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor, 45363, Indonesia
| | - Khaled M Elamin
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
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Gu Z, Qiu C, Chen L, Wang X. Injectable thermosensitive hydrogel loading erythropoietin and FK506 alleviates gingival inflammation and promotes periodontal tissue regeneration. Front Bioeng Biotechnol 2024; 11:1323554. [PMID: 38239915 PMCID: PMC10794575 DOI: 10.3389/fbioe.2023.1323554] [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: 10/18/2023] [Accepted: 12/13/2023] [Indexed: 01/22/2024] Open
Abstract
Background: Periodontitis is a chronic multifactorial inflammatory disease associated with dysbiotic plaque biofilms and characterized by progressive destruction of the tooth-supporting apparatus. Therefore, there is significant potential in the discovery of drugs that inhibit periodontal inflammatory responses and promote periodontal regeneration. Methods: In this study, we generated a periodontitis rat model to detect the effects of chitosan/β-sodium glycerophosphate (β-GP)/glycolic acid (GA) hydrogel carried Erythropoietin and FK506 (EPO-FK506-CS/β-GP/GA). A total of forty-eight male Wistar rats were used to establish the periodontitis model. Drug injection was administered every 3 days for a total of five times over a 2-week period. After a period of 2 weeks following implantation, the rats underwent anesthesia, and a section of their maxillae encompassing the maxillary first and second molars, along with the alveolar bone, was obtained. micro-CT scanning, histopathology, immunohistochemistry and reverse transcription-quantitative PCR (RT-qPCR) assays were performed. Meanwhile, ELISA assay was performed to detect the levels of inflammatory mediators (TNF-α, IL-6 and IL-1β). Results: The synthesis and characterization of EPO-FK506-CS/β-GP/GA revealed that the hydrogel has stability and sustained release of drugs. The application of FK506+EPO was found to significantly enhance new bone formation in the defect area, as evidenced by the results of HE staining. Additionally, the use of FK506+EPO in the treated groups led to a notable increase in the density of alveolar bone, as observed through micro-CT analysis, when compared to the Model group. EPO-FK506-CS/β-GP/GA hydrogel exhibited notable efficacy in modulating inflammatory mediators (TNF-α, IL-6 and IL-1β). Furthermore, the osteoinductive properties of the EPO-FK506-CS/β-GP/GA hydrogel were extensive, as evidenced by a significant upregulation in the expression of key markers (Collagen I, Runx2, OPN, and OCN) associated with osteoblastic differentiation. Conclusion: Taken together, EPO-FK506-CS/β-GP/GA hydrogel alleviates gingival inflammation and promotes periodontal tissue regeneration in the periodontitis.
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Affiliation(s)
- Zhongyi Gu
- Department of Periodontology, The Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Yantai, Shandong, China
| | - Caiqing Qiu
- Department of Periodontology, The Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Yantai, Shandong, China
| | - Ling Chen
- Department of Yantai University Branch, The Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Yantai, Shandong, China
| | - Xiaoli Wang
- Department of Yantai University Branch, The Affiliated Yantai Stomatological Hospital, Binzhou Medical University, Yantai, Shandong, China
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Zhao S, Zhang J, Qiu M, Hou Y, Li X, Zhong G, Gou K, Li J, Zhang C, Qu Y, Wang X. Mucoadhesive and thermosensitive Bletilla striata polysaccharide/chitosan hydrogel loaded nanoparticles for rectal drug delivery in ulcerative colitis. Int J Biol Macromol 2024; 254:127761. [PMID: 38287598 DOI: 10.1016/j.ijbiomac.2023.127761] [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: 08/09/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 01/31/2024]
Abstract
Ulcerative colitis (UC) is a chronic disease with diffuse mucosal inflammation limited to the colon. A topical drug delivery system that could be facilely performed and efficiently retained at colon are attractive for clinical ulcerative colitis treatment. Herein, a novel platform for rectal administration of thermosensitive hydrogel co-loaded with nanoparticles to treat ulcerative colitis was developed. Thiolated-hyaluronic acid was synthesized, and prepared nanoparticles with zein and Puerarin. And the Bletilla striata polysaccharide with colonic mucosa repair effect was oxidized, and mixed with chitosan and β-sodium glycerophosphate to prepare thermosensitive hydrogel. Thermosensitive hydrogels were combined with nanoparticles to investigate their mucosal adhesion, retention, and permeability, as well as their therapeutic effects on ulcerative colitis. Thiolated-hyaluronic acid nanoparticles had good stability, and could be quickly converted into hydrogel at body temperature when combined with thermosensitive hydrogel. The nanoparticles-loaded thermosensitive hydrogel also was excellent at mucosal penetration, enhancing the retention time of drugs in colon, and effectively controlling drug release. In vivo ulcerative colitis treatment revealed that the nanoparticles-loaded hydrogel significantly repaired the colonic mucosa and inhibit colonic inflammation. Therefore, the thermosensitive hydrogel co-loaded nanoparticles will have a promising application in effective treatment of ulcerative colitis by topical administration.
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Affiliation(s)
- Shiyi Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Junbo Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Mengyu Qiu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Yusen Hou
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xuebo Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Guofeng Zhong
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Kaijun Gou
- Institute of Tibetan Plateau, Southwest Minzu University, Chengdu 610225, China
| | - Jingjing Li
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hong Kong
| | - Chen Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yan Qu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiao Wang
- College of Pharmacy, Southwest Minzu University, Chengdu 610225, China.
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Wassif RK, Elkheshen SA, Shamma RN, Amer MS, Elhelw R, El-Kayal M. Injectable systems of chitosan in situ forming composite gel incorporating linezolid-loaded biodegradable nanoparticles for long-term treatment of bone infections. Drug Deliv Transl Res 2024; 14:80-102. [PMID: 37542190 PMCID: PMC10746766 DOI: 10.1007/s13346-023-01384-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2023] [Indexed: 08/06/2023]
Abstract
The objective of the current study was to create an efficient, minimally invasive combined system comprising in situ forming hydrogel loaded with both spray-dried polymeric nanoparticles encapsulating linezolid and nanohydroxyapatite for local injection to bones or their close vicinity. The developed system was designed for a dual function namely releasing the drug in a sustained manner for long-term treatment of bone infections and supporting bone proliferation and new tissues generation. To achieve these objectives, two release sustainment systems for linezolid were optimized namely a composite in situ forming chitosan hydrogel and spray-dried PLGA/PLA solid nanoparticles. The composite, in situ forming hydrogel of chitosan was prepared using two different gelling agents namely glycerophosphate (GP) and sodium bicarbonate (NaHCO3) at 3 different concentrations each. The spray-dried linezolid-loaded PLGA/PLA nanoparticles were developed using a water-soluble carrier (PVP K30) and a lipid soluble one (cetyl alcohol) along with 3 types of DL-lactide and/or DL-lactide-co-glycolide copolymer using nano-spray-drying technique. Finally, the optimized spray-dried linezolid nanoparticles were incorporated into the optimized composite hydrogel containing nanohydroxy apatite (nHA). The combined hydrogel/nanoparticle systems displayed reasonable injectability with excellent gelation time at 37 °C. The optimum formulae sustained the release of linezolid for 7-10 days, which reveals its ability to reduce the frequency of injection during the course of treatment of bones infections and increase the patients' compliance. They succeeded to alleviate the bone infections and the associated clinical, biochemical, radiological, and histopathological changes within 2-4 weeks of injection. As to the state of art in this study and to the best of our knowledge, no such complete and systematic study on this type of combined in situ forming hydrogel loaded with spray-dried nanoparticles of linezolid is available yet in literatures.
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Affiliation(s)
- Reem Khaled Wassif
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
| | - Seham A Elkheshen
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr Elini Street, Cairo, 11562, Egypt.
| | - Rehab Nabil Shamma
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr Elini Street, Cairo, 11562, Egypt
| | - Mohammed S Amer
- Department of Surgery, Anaesthesiology and Radiology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Rehab Elhelw
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Maha El-Kayal
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt, Cairo, Egypt
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Bharathi R, Harini G, Sankaranarayanan A, Shanmugavadivu A, Vairamani M, Selvamurugan N. Nuciferine-loaded chitosan hydrogel-integrated 3D-printed polylactic acid scaffolds for bone tissue engineering: A combinatorial approach. Int J Biol Macromol 2023; 253:127492. [PMID: 37858655 DOI: 10.1016/j.ijbiomac.2023.127492] [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: 08/18/2023] [Revised: 10/07/2023] [Accepted: 10/15/2023] [Indexed: 10/21/2023]
Abstract
Critical-sized bone defects resulting from severe trauma and open fractures cannot spontaneously heal and require surgical intervention. Limitations of traditional bone grafting include immune rejection and demand-over-supply issues leading to the development of novel tissue-engineered scaffolds. Nuciferine (NF), a plant-derived alkaloid, has excellent therapeutic properties, but its osteogenic potential is yet to be reported. Furthermore, the bioavailability of NF is obstructed due to its hydrophobicity, requiring an efficient drug delivery system, such as chitosan (CS) hydrogel. We designed and fabricated polylactic acid (PLA) scaffolds via 3D printing and integrated them with NF-containing CS hydrogel to obtain the porous biocomposite scaffolds (PLA/CS-NF). The fabricated scaffolds were subjected to in vitro physicochemical characterization, cytotoxicity assays, and osteogenic evaluation studies. Scanning electron microscopic studies revealed uniform pore size distribution on PLA/CS-NF scaffolds. An in vitro drug release study showed a sustained and prolonged release of NF. The cyto-friendly nature of NF in PLA/CS-NF scaffolds towards mouse mesenchymal stem cells (mMSCs) was observed. Also, cellular and molecular level studies signified the osteogenic potential of NF in PLA/CS-NF scaffolds on mMSCs. These results indicate that the PLA/CS-NF scaffolds could promote new bone formation and have potential applications in bone tissue engineering.
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Affiliation(s)
- Ramanathan Bharathi
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Ganesh Harini
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Aravind Sankaranarayanan
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Abinaya Shanmugavadivu
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Mariappanadar Vairamani
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Nagarajan Selvamurugan
- Department of Biotechnology, School of Bioengineering, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India..
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10
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Durán E, Neira-Carrillo A, Oyarzun-Ampuero F, Valenzuela C. Thermosensitive Chitosan Hydrogels: A Potential Strategy for Prolonged Iron Dextran Parenteral Supplementation. Polymers (Basel) 2023; 16:139. [PMID: 38201804 PMCID: PMC10780544 DOI: 10.3390/polym16010139] [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: 11/03/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
Iron deficiency anemia (IDA) presents a global health challenge, impacting crucial development stages in humans and other mammals. Pigs, having physiological and metabolic similarities with humans, are a valuable model for studying and preventing anemia. Commonly, a commercial iron dextran formulation (CIDF) with iron dextran particles (IDPs) is intramuscularly administered for IDA prevention in pigs, yet its rapid metabolism limits preventive efficacy. This study aimed to develop and evaluate chitosan thermosensitive hydrogels (CTHs) as a novel parenteral iron supplementation strategy, promoting IDPs' prolonged release and mitigating their rapid metabolism. These CTHs, loaded with IDPs (0.1, 0.2, and 0.4 g of theoretical iron/g of chitosan), were characterized for IM iron supplementation. Exhibiting thermosensitivity, these formulations facilitated IM injection at ~4 °C, and its significant increasing viscosity at 25-37 °C physically entrapped the IDPs within the chitosan's hydrophobic gel without chemical bonding. In vitro studies showed CIDF released all the iron in 6 h, while CTH0.4 had a 40% release in 72 h, mainly through Fickian diffusion. The controlled release of CTHs was attributed to the physical entrapment of IDPs within the CTHs' gel, which acts as a diffusion barrier. CTHs would be an effective hydrogel prototype for prolonged-release parenteral iron supplementation.
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Affiliation(s)
- Emerson Durán
- Departamento de Fomento de la Producción Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11.735, La Pintana 8820808, Santiago, Chile;
- Programa de Doctorado en Ciencias Silvoagropecuarias y Veterinarias, Campus Sur Universidad de Chile, Santa Rosa 11.315, La Pintana 8820808, Santiago, Chile
| | - Andrónico Neira-Carrillo
- Laboratorios de Materiales Bio-Relacionados (CIMAT) y Síntesis y Caracterización de Polímeros Funcionalizados y Biomoléculas (POLYFORMS), Departamento de Ciencias Biológicas Animales, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11.735, La Pintana 8820808, Santiago, Chile;
| | - Felipe Oyarzun-Ampuero
- Departamento de Ciencias y Tecnología Farmacéuticas, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia 8380494, Santiago, Chile
| | - Carolina Valenzuela
- Departamento de Fomento de la Producción Animal, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santa Rosa 11.735, La Pintana 8820808, Santiago, Chile;
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11
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Yin S, Zhou J, Wang J, Xia B, Chen G. Preparation and performance of electrically conductive decellularized nerve matrix hydrogel conduits. J Biomater Appl 2023; 38:471-483. [PMID: 37670570 DOI: 10.1177/08853282231200963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Peripheral nerve injury (PNI) is one of the major clinical treatment challenges following an impact on the body. When PNI manifests as nerve gaps, surgical connections and exogenous grafts are required. Recently, electrically conductive polymers (CPs) based nerve guidance conduits have yielded promising results for treating PNI. Polypyrrole (PPy) has become one of the most commonly used CPs in PNI repair due to its advantages of high conductivity and excellent biocompatibility. In this study, we combined different PPy concentrations with a chitosan (CS) temperature-sensitive hydrogel system containing decellularized nerve matrix (DNM) to construct the electrically conductive nerve conduits. We evaluated the physical and biological properties of four groups of nerve conduits. It was found that the PPy concentrations were proportional to the electrical conductivity of the nerve conduits. The mechanical properties of the nerve conduits increased with higher PPy concentrations but decreased when the PPy concentration was as high as 8%. Meanwhile, the co-blending of PPy and DNM gave the nerve conduit suitable degradation properties. Furthermore, in vitro cytotoxicity assay and live/dead assay demonstrated these conduits could support the adhesion and growth of cells. In summary, the electrically conductive nerve conduits with high conductivity, mechanical properties, biodegradation characteristics, and cytocompatibility had potential applications in the field of peripheral nerve regeneration.
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Affiliation(s)
- Shiyun Yin
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
| | - Jiangyi Zhou
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
| | - Jinsong Wang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
| | - Bin Xia
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, China
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12
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Gao R, Xu S, Chen C, Liu D, He Y, Zang Y, Dong X, Ma G, Liu H. Impact of 1,25-dihydroxyvitamin D 3 PLGA-nanoparticles/chitosan hydrogel on osteoimmunomodulation. Int J Biol Macromol 2023; 247:125624. [PMID: 37392919 DOI: 10.1016/j.ijbiomac.2023.125624] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 06/14/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023]
Abstract
Severe bone defects that extend beyond a critical size do not heal on their own, increasing the risk of complications and leading to poor outcomes for patients. Healing is a highly coordinated and complex process in which immune cells have an important function making the design and preparation of biomaterials with immunomodulatory functions an important new therapeutic strategy. 1,25-dihydroxyvitamin D3 (VD3) is crucial for bone metabolism and immune regulation. For post-defect bone regeneration, we developed a drug delivery system (DDS) based on chitosan (CS) and nanoparticles (NPs) to sustain the release effect of VD3 and desirable biological characteristics. The hydrogel system was physically characterized and confirmed to have good mechanical strength, degradation rate, and drug release rate. In vitro experiments showed that the cells had good biological activity when the hydrogel was co-cultured with MC3T3-E1 and RAW264.7. The high expression of ARG-1 and low expression of iNOS in macrophages confirmed that VD3-NPs/CS-GP hydrogel transformed lipopolysaccharide-induced M1 macrophages into M2 macrophages. Alkaline phosphatase and alizarin red staining showed that VD3-NPs/CS-GP hydrogel promoted osteogenic differentiation under inflammatory conditions. In conclusion, VD3-NPs/CS-GP hydrogel with synergistic anti-inflammatory and pro-osteogenic differentiation effects may serve as a potential immunomodulatory biomaterial for bone repair and regeneration in cases of bone defects.
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Affiliation(s)
- Rongzhu Gao
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China; Department of Stomatology, Changhai hospital, Shanghai 200433, China
| | - Shaoyang Xu
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China
| | - Chen Chen
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China
| | - Donglei Liu
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China; School of Basic Medicine, Binzhou Medical University, Yantai 264003, China
| | - Yuzhu He
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China
| | - Yaran Zang
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China
| | - Xufeng Dong
- School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Guowu Ma
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China.
| | - Huiying Liu
- School of Stomatology, Dalian Medical University, Dalian 116044, China; Academician Laboratory of Immune and Oral Development & Regeneration, Dalian Medical University, Dalian 116044, China.
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13
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Tanga S, Aucamp M, Ramburrun P. Injectable Thermoresponsive Hydrogels for Cancer Therapy: Challenges and Prospects. Gels 2023; 9:gels9050418. [PMID: 37233009 DOI: 10.3390/gels9050418] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/06/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023] Open
Abstract
The enervating side effects of chemotherapeutic drugs have necessitated the use of targeted drug delivery in cancer therapy. To that end, thermoresponsive hydrogels have been employed to improve the accumulation and maintenance of drug release at the tumour site. Despite their efficiency, very few thermoresponsive hydrogel-based drugs have undergone clinical trials, and even fewer have received FDA approval for cancer treatment. This review discusses the challenges of designing thermoresponsive hydrogels for cancer treatment and offers suggestions for these challenges as available in the literature. Furthermore, the argument for drug accumulation is challenged by the revelation of structural and functional barriers in tumours that may not support targeted drug release from hydrogels. Other highlights involve the demanding preparation process of thermoresponsive hydrogels, which often involves poor drug loading and difficulties in controlling the lower critical solution temperature and gelation kinetics. Additionally, the shortcomings in the administration process of thermosensitive hydrogels are examined, and special insight into the injectable thermosensitive hydrogels that reached clinical trials for cancer treatment is provided.
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Affiliation(s)
- Sandrine Tanga
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Bellville 7535, South Africa
| | - Marique Aucamp
- School of Pharmacy, Faculty of Natural Sciences, University of the Western Cape, Bellville 7535, South Africa
| | - Poornima Ramburrun
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
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14
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Zhu Y, Winer D, Goh C, Shrestha A. Injectable thermosensitive hydrogel to modulate tolerogenic dendritic cells under hyperglycemic condition. Biomater Sci 2023; 11:2091-2102. [PMID: 36723183 DOI: 10.1039/d2bm01881k] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Hyperglycemia associated with diabetes mellitus is a significant risk factor for periodontitis and it polarizes the immune cells towards an inflammatory state. Specific biomaterials can deliver therapeutic or immunomodulatory agents to regulate the excessive periodontal inflammation. Dendritic cells (DCs) bridge the innate and adaptive immune systems and are crucially involved in periodontitis. Thus, targeting DCs is an attractive treatment option for diabetic periodontitis, which, by modulating the downstream adaptive immune cells could regulate the host immune responses. In this study, a chitosan-based thermosensitive injectable self-assembled hydrogel (TISH) was developed to modulate DCs towards a tolerogenic phenotype, which can induce regulatory T-cells to attenuate inflammation and promote healing. Granulocyte-macrophage colony-stimulating factor (GM-CSF) and resveratrol were loaded into TISH (TISH(G + R)) and were sustainably released. TISH demonstrated good biocompatibility and cell penetration in its porous structure. DCs grown in TISH(G + R) under an in vitro hyperglycemic condition showed reduced maturation and activation markers such as CD80, CD83 and CD86, while simultaneously upregulated tolerogenic genes such as FOXP3, SOCS3, TGFß and IL10. Co-culture of these tolerogenic DCs with naïve T-cells induced regulatory T-cells differentiation, evidenced by elevated gene expressions of FOXP3, TGFβ and IL-10. In vivo subcutaneous injection of TISH (G + R) into the mice showed significant infiltration of DCs and regulatory T-cells. In conclusion, TISH was developed and optimized as an injectable hydrogel to modulate DCs towards the tolerogenic phenotype and induce regulatory T-cells under hyperglycemia. TISH has promising potential to improve periodontal parameters in diabetic periodontitis.
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Affiliation(s)
- Yi Zhu
- Faculty of Dentistry, University of Toronto, 124 Edward Street, Toronto, ON, M5G 1G6, Canada.
| | - Daniel Winer
- Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.,Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA.,Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, M5G 1L7, Canada.,Department of Pathology, University Health Network, Toronto, ON M5G 2C4, Canada
| | - Cynthia Goh
- Department of Chemistry, University of Toronto, 80 George Street, Toronto, ON, M5S 3H6, Canada.,Department of Materials Science and Engineering, University of Toronto, 84 College Street, Toronto, ON, M5S 3E4, Canada
| | - Annie Shrestha
- Faculty of Dentistry, University of Toronto, 124 Edward Street, Toronto, ON, M5G 1G6, Canada. .,Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
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15
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Ghanavi M, Khoshandam A, Aslzad S, Fathi M, Barzegari A, Dalir Abdolahinia E, Adibkia K, Barar J, Omidi Y. Injectable thermosensitive PEG-g-chitosan hydrogel for ocular delivery of vancomycin and prednisolone. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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16
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Nacre-mimetic hydroxyapatite/chitosan/gelatin layered scaffolds modifying substance P for subchondral bone regeneration. Carbohydr Polym 2022; 291:119575. [DOI: 10.1016/j.carbpol.2022.119575] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 04/11/2022] [Accepted: 05/03/2022] [Indexed: 12/25/2022]
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17
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Thermosensitive Injectable Hydrogels for Intra-Articular Delivery of Etanercept for the Treatment of Osteoarthritis. Gels 2022; 8:gels8080488. [PMID: 36005089 PMCID: PMC9407145 DOI: 10.3390/gels8080488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022] Open
Abstract
The intra-articular administration of drugs has attracted great interest in recent decades for the treatment of osteoarthritis. The use of modified drugs has also attracted interest in recent years because their intra-articular administration has demonstrated encouraging results. The objective of this work was to prepare injectable-thermosensitive hydrogels for the intra-articular administration of Etanercept (ETA), an inhibitor of tumor necrosis factor-α. Hydrogels were prepared from the physical mixture of chitosan and Pluronic F127 with β-glycerolphosphate (BGP). Adding β-glycerolphosphate to the system reduced the gelation time and also modified the morphology of the resulting material. In vitro studies were carried out to determine the cytocompatibility of the prepared hydrogels for the human chondrocyte line C28/I2. The in vitro release study showed that the incorporation of BGP into the system markedly modified the release of ETA. In the in vivo studies, it was verified that the hydrogels remained inside the implantation site in the joint until the end of the study. Furthermore, ETA was highly concentrated in the blood of the study mice 48 h after the loaded material was injected. Histological investigation of osteoarthritic knees showed that the material promotes cartilage recovery in osteoarthritic mice. The results demonstrate the potential of ETA-loaded injectable hydrogels for the localized treatment of joints.
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18
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Dual ionically crosslinked chitosan–based injectable hydrogel as drug delivery system. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05003-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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19
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Samiei M, Abdolahinia ED, Fathi M, Barar J, Omidi Y. Chitosan-based bioactive hydrogels for osteogenic differentiation of dental pulp stem cells. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Kocak FZ, Yar M, Rehman IU. Hydroxyapatite-Integrated, Heparin- and Glycerol-Functionalized Chitosan-Based Injectable Hydrogels with Improved Mechanical and Proangiogenic Performance. Int J Mol Sci 2022; 23:ijms23105370. [PMID: 35628172 PMCID: PMC9140455 DOI: 10.3390/ijms23105370] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 02/04/2023] Open
Abstract
The investigation of natural bioactive injectable composites to induce angiogenesis during bone regeneration has been a part of recent minimally invasive regenerative medicine strategies. Our previous study involved the development of in situ-forming injectable composite hydrogels (Chitosan/Hydroxyapatite/Heparin) for bone regeneration. These hydrogels offered facile rheology, injectability, and gelation at 37 °C, as well as promising pro-angiogenic abilities. In the current study, these hydrogels were modified using glycerol as an additive and a pre-sterile production strategy to enhance their mechanical strength. These modifications allowed a further pH increment during neutralisation with maintained solution homogeneity. The synergetic effect of the pH increment and further hydrogen bonding due to the added glycerol improved the strength of the hydrogels substantially. SEM analyses showed highly cross-linked hydrogels (from high-pH solutions) with a hierarchical interlocking pore morphology. Hydrogel solutions showed more elastic flow properties and incipient gelation times decreased to just 2 to 3 min at 37 °C. Toluidine blue assay and SEM analyses showed that heparin formed a coating at the top layer of the hydrogels which contributed anionic bioactive surface features. The chick chorioallantoic membrane (CAM) assay confirmed significant enhancement of angiogenesis with chitosan-matrixed hydrogels comprising hydroxyapatite and small quantities of heparin (33 µg/mL) compared to basic chitosan hydrogels.
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Affiliation(s)
- Fatma Z. Kocak
- Engineering-Architecture Faculty, Metallurgy and Material Engineering, Nevsehir Haci Bektas Veli University, Nevsehir 50300, Turkey;
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK
| | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan;
| | - Ihtesham U. Rehman
- Engineering-Architecture Faculty, Metallurgy and Material Engineering, Nevsehir Haci Bektas Veli University, Nevsehir 50300, Turkey;
- Correspondence:
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21
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Dang PA, Palomino-Durand C, Elsafi Mabrouk M, Marquaille P, Odier C, Norvez S, Pauthe E, Corté L. Rational formulation design of injectable thermosensitive chitosan-based hydrogels for cell encapsulation and delivery. Carbohydr Polym 2022; 277:118836. [PMID: 34893253 DOI: 10.1016/j.carbpol.2021.118836] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/12/2021] [Accepted: 10/27/2021] [Indexed: 11/26/2022]
Abstract
This work reports a rational design of injectable thermosensitive chitosan systems for cell encapsulation and delivery. Using mixtures of two phosphate salts, beta-glycerophosphate and ammonium hydrogen phosphate, we demonstrate that the pH and the osmolarity can be adjusted separately by varying the molar ratios between the salts and the d-glucosamine monomers. We found the existence of a critical temperature above which gelation time decays following a power-law. This gelation kinetics can be finely tuned through the pH and salt-glucosamine ratios. Formulations having physiological pH and osmolarity were produced for chitosan concentrations ranging from 0.4 to 0.9 wt%. They remain liquid for more than 2 h at 20 °C and form a macroporous gel within 2 min at 37 °C. In vitro encapsulation of pre-osteoblastic cells and gingival fibroblasts showed homogeneous cell distribution and good cell viability up to 24 h. Such an approach provides a valuable platform to design thermosensitive cell-laden systems.
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Affiliation(s)
- Phuong Anh Dang
- Molecular, Macromolecular Chemistry and Materials, C3M, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France; Équipe de Recherche sur les Relations Matrice Extracellulaire-Cellule, ERRMECe, CY Cergy Paris Université, Maison Internationale de la Recherche, 1 rue Descartes, 95000 Neuville-sur-Oise, France
| | - Carla Palomino-Durand
- Équipe de Recherche sur les Relations Matrice Extracellulaire-Cellule, ERRMECe, CY Cergy Paris Université, Maison Internationale de la Recherche, 1 rue Descartes, 95000 Neuville-sur-Oise, France
| | - Mohamed Elsafi Mabrouk
- Molecular, Macromolecular Chemistry and Materials, C3M, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France
| | - Pierre Marquaille
- Molecular, Macromolecular Chemistry and Materials, C3M, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France
| | - Clément Odier
- Molecular, Macromolecular Chemistry and Materials, C3M, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France
| | - Sophie Norvez
- Molecular, Macromolecular Chemistry and Materials, C3M, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France
| | - Emmanuel Pauthe
- Équipe de Recherche sur les Relations Matrice Extracellulaire-Cellule, ERRMECe, CY Cergy Paris Université, Maison Internationale de la Recherche, 1 rue Descartes, 95000 Neuville-sur-Oise, France
| | - Laurent Corté
- Molecular, Macromolecular Chemistry and Materials, C3M, ESPCI Paris, CNRS, PSL University, 10 rue Vauquelin, 75005 Paris, France; Centre des Matériaux, MINES ParisTech, CNRS, PSL University, 63-65 rue Henri-Auguste Desbruères, 91003 Evry, France.
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22
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Lu X, Guo H, Li J, Sun T, Xiong M. Recombinant Human Bone Morphogenic Protein-2 Immobilized Fabrication of Magnesium Functionalized Injectable Hydrogels for Controlled-Delivery and Osteogenic Differentiation of Rat Bone Marrow-Derived Mesenchymal Stem Cells in Femoral Head Necrosis Repair. Front Cell Dev Biol 2021; 9:723789. [PMID: 34900987 PMCID: PMC8656218 DOI: 10.3389/fcell.2021.723789] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/23/2021] [Indexed: 11/13/2022] Open
Abstract
Femoral head necrosis (FHN) is a clinically progressive disease that leads to overwhelming complications without an effective therapeutic approach. In recent decades, transplantation of mesenchymal stem cells (MSCs) has played a promising role in the treatment of FHN in the initial stage; however, the success rate is still low because of unsuitable cell carriers and abridged osteogenic differentiation of the transplanted MSCs. Biopolymeric-derived hydrogels have been extensively applied as effective cell carriers and drug vesicles; they provide the most promising contributions in the fields of tissue engineering and regenerative medicine. However, the clinical potential of hydrogels may be limited because of inappropriate gelation, swelling, mechanical characteristics, toxicity in the cross-linking process, and self-healing ability. Naturally, gelated commercial hydrogels are not suitable for cell injection and infiltration because of their static network structure. In this study, we designed a novel thermogelling injectable hydrogel using natural silk fibroin-blended chitosan (CS) incorporated with magnesium (Mg) substitutes to improve physical cross-linking, stability, and cell osteogenic compatibility. The presented observations demonstrate that the developed injectable hydrogels can facilitate the controlled delivery of immobilized recombinant human bone morphogenic protein-2 (rhBMP-2) and rat bone marrow-derived MSCs (rBMSCs) with greater cell encapsulation efficiency, compatibility, and osteogenic differentiation. In addition, outcomes of in vivo animal studies established promising osteoinductive, bone mineral density, and bone formation rate after implantation of the injectable hydrogel scaffolds. Therefore, the developed hydrogels have great potential for clinical applications of FHN therapy.
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Affiliation(s)
- Xueliang Lu
- Department of Orthopedics, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China
| | - Hongyu Guo
- Clinical Medical College, Henan University of Science and Technology, Luoyang, China
| | - Jiaju Li
- Clinical Medical College, Henan University of Science and Technology, Luoyang, China
| | - Tianyu Sun
- Clinical Medical College, Henan University of Science and Technology, Luoyang, China
| | - Mingyue Xiong
- Department of Orthopedics, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China
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23
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Kaur K, Paiva SS, Caffrey D, Cavanagh BL, Murphy CM. Injectable chitosan/collagen hydrogels nano-engineered with functionalized single wall carbon nanotubes for minimally invasive applications in bone. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112340. [PMID: 34474890 DOI: 10.1016/j.msec.2021.112340] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Mechanical robustness is an essential consideration in the development of hydrogel platforms for bone regeneration, and despite significant advances in the field of injectable hydrogels, many fail in this regard. Inspired by the mechanical properties of carboxylated single wall carbon nanotubes (COOH-SWCNTs) and the biological advantages of natural polymers, COOH-SWCNTs were integrated into chitosan and collagen to formulate mechanically robust, injectable and thermoresponsive hydrogels with interconnected molecular structure for load-bearing applications. This study presents a complete characterisation of the structural and biological properties, and mechanism of gelation of these novel formulated hydrogels. Results demonstrate that β-glycerophosphate (β-GP) and temperature play important roles in attaining gelation at physiological conditions, and the integration with COOH-SWCNTs significantly changed the structural morphology of the hydrogels to a more porous and aligned network. This led to a crystalline structure and significantly increased the mechanical strength of the hydrogels from kPa to MPa, which is closer to the mechanical strength of the bone. Moreover, increased osteoblast proliferation and rapid adsorption of hydroxyapatite on the surface of the hydrogels indicates increased bioactivity with addition of COOH-SWCNTs. Therefore, these nano-engineered hydrogels are expected to have wide utility in the area of bone tissue engineering and regenerative medicine.
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Affiliation(s)
- Kulwinder Kaur
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons (RCSI), Dublin D02YN77, Ireland
| | - Silvia Sa' Paiva
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons (RCSI), Dublin D02YN77, Ireland
| | - David Caffrey
- School of Physics and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, D02 PN40, Ireland
| | - Brenton L Cavanagh
- Cellular and Molecular Imaging Core, Royal College of Surgeons in Ireland, Dublin D02YN77, Ireland
| | - Ciara M Murphy
- Tissue Engineering Research Group, Department of Anatomy & Regenerative Medicine, Royal College of Surgeons (RCSI), Dublin D02YN77, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin D02YN7, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland.
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Li H, Li M, Liu P, Wang K, Fang H, Yin J, Zhu D, Yang Q, Gao J, Ke Q, Yu H, Guo Y, Gao Y, Zhang C. A multifunctional substance P-conjugated chitosan hydrochloride hydrogel accelerates full-thickness wound healing by enhancing synchronized vascularization, extracellular matrix deposition, and nerve regeneration. Biomater Sci 2021; 9:4199-4210. [PMID: 33989376 DOI: 10.1039/d1bm00357g] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Due to the native skin limitations and the complexity of reconstructive microsurgery, advanced biomaterials are urgently required to promote wound healing for severe skin defects caused by accidents and disasters. Accumulating evidence has supported that substance P (SP) has a potential effect on skin regeneration. However, SP application is seriously impeded by its poor stability and oxidative reactions occurring during production, transportation, and storage. An SP-conjugated chitosan hydrochloride hydrogel (CSCl-SP) fabricated in this study demonstrated an enhanced capacity to repair full-thickness skin defects. CSCl-SP provided a stable in vitro delivery system for SP. The dissolution of CSCl-SP promoted the proliferation, migration, and tube formation, as well as angiogenesis-related gene and protein expression in human umbilical vein endothelial cells. CSCI-SP also stimulated the proliferation, migration, and production of anabolic growth factor in human fibroblasts. Moreover, CSCl-SP significantly promoted the neurite outgrowth in Neuro-2A cells. In vivo, CSCl-SP dramatically strengthened the vascularization, extracellular matrix deposition and remodeling, and nerve regeneration, thereby promoting efficient recovery of the full-thickness skin defect. Thus, synchronized multifunction of the CSCl-SP hydrogel makes it a promising and smart material for intractable skin defects.
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Affiliation(s)
- Hao Li
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Mengna Li
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
| | - Pei Liu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Kaiyang Wang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Haoyu Fang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Junhui Yin
- Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Daoyu Zhu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Qianhao Yang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Junjie Gao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China. and Institute of Microsurgery on Extremities, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Qinfei Ke
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
| | - Hongping Yu
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China. and The First Affiliated Hospital of Xiamen University, Xiamen 361005, China
| | - Yaping Guo
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
| | - Youshui Gao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Changqing Zhang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
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Rahmanian-Devin P, Baradaran Rahimi V, Askari VR. Thermosensitive Chitosan- β-Glycerophosphate Hydrogels as Targeted Drug Delivery Systems: An Overview on Preparation and Their Applications. Adv Pharmacol Pharm Sci 2021; 2021:6640893. [PMID: 34036263 PMCID: PMC8116164 DOI: 10.1155/2021/6640893] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 04/09/2021] [Accepted: 04/20/2021] [Indexed: 12/14/2022] Open
Abstract
Today, with the advances in technology and science, more advanced drug delivery formulations are required. One of these new systems is an intelligent hydrogel. These systems are affected by the environment or conditions that become a gel, stay in the circumstance for a certain period, and slowly release the drug. As an advantage, only a lower dose of the drug is required, and it provides less toxicity and minor damage to other tissues. Hydrogels are of different types, including temperature-sensitive, pH-sensitive, ion change-sensitive, and magnetic field-sensitive. In this study, we investigated a kind of temperature-sensitive smart hydrogel, which has a liquid form at room temperature and becomes gel with increasing temperature. Chitosan-β-glycerophosphate hydrogels have been researched and used in many studies. This study investigates the various factors that influence the gelation mechanism, such as gel formation rates, temperature, pH, time, and gel specificity. Hydrogels are used in many drug delivery systems and diseases, including nasal drug delivery, vaginal drug delivery, wound healing, peritoneal adhesion, ophthalmic drug delivery, tissue engineering, and peptide and protein delivery. Overall, the chitosan-β-glycerophosphate hydrogel is a suitable drug carrier for a wide range of drugs. It shows little toxicity to the body, is biodegradable, and is compatible with other organs. This system can be used in different conditions and different medication ways, such as oral, nasal, and injection.
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Affiliation(s)
- Pouria Rahmanian-Devin
- Department of Pharmaceutics, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vafa Baradaran Rahimi
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vahid Reza Askari
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmaceutical Sciences in Persian Medicine, School of Persian and Complementary Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Persian Medicine, School of Persian and Complementary Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Ultrasound augmenting injectable chemotaxis hydrogel for articular cartilage repair in osteoarthritis. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Injectable thermosensitive hydrogel-based drug delivery system for local cancer therapy. Colloids Surf B Biointerfaces 2021; 200:111581. [DOI: 10.1016/j.colsurfb.2021.111581] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 12/17/2020] [Accepted: 01/11/2021] [Indexed: 12/16/2022]
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Wang D, Luo M, Huang B, Gao W, Jiang Y, Li Q, Nan K, Lin S. Localized co-delivery of CNTF and FK506 using a thermosensitive hydrogel for retina ganglion cells protection after traumatic optic nerve injury. Drug Deliv 2021; 27:556-564. [PMID: 32351142 PMCID: PMC7241497 DOI: 10.1080/10717544.2020.1748759] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Following the traumatic axonal injury in the optic nerve, the failure of retrograde axonal transport to continuously supply neurotrophins from the brain to retina results in deprivation of neurotrophins in retinal ganglion cells (RGCs), which in turn can modulate the fate of RGCs toward apoptosis and thereby impede axon regeneration. In this study, a ciliary neurotrophic factor (CNTF) loaded thermo-sensitive hydrogel was designed and developed as a localized drug depot to restore neurotrophins supply following axon injury. Besides, following traumatic axon injury, overactive immune responses cause neurotoxicity and induce scar formation which together constitutes the major hindrances for axon regeneration. Thus, the FK506, a hydrophobic macrolide immunosuppressant, was co-loaded into the hydrogel after encapsulating it into a polymeric micelle. The materials can undergo sol-to-gel transition within minutes under a physiological pH of 37 °C. The release of drugs from the hydrogel exhibited a sustainable profile in vitro. The optic nerve was exposed by surgical procedure and the animal model was prepared by crushing the nerve with a reverse clamp. For the localized delivery to the optic nerve, a pre-hydrogel liquid containing chitosan, FK506 (in micelle), CNTF, and the gelling agent was directly smeared on the injured site, which gelled under physiological condition. This co-delivery system exhibited in vivo RGCs protective effect against the adverse effects caused by traumatic optic nerve injury, indicating the potential of this drug delivery system for effective optic nerve repair and this strategy may provide promising platforms for localized drug delivery in various other therapies.
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Affiliation(s)
- Dongmei Wang
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Mengmeng Luo
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China.,Wenzhou Institute, University of Chinese Academy of Science, Wenzhou, China
| | - Baoshan Huang
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China.,Wenzhou Institute, University of Chinese Academy of Science, Wenzhou, China
| | - Wa Gao
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yan Jiang
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Qing Li
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China.,State Key Laboratory of Ophthalmology, Optometry and Visual Science, Wenzhou Medical University, Wenzhou, China
| | - Kaihui Nan
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China.,State Key Laboratory of Ophthalmology, Optometry and Visual Science, Wenzhou Medical University, Wenzhou, China.,Wenzhou Institute, University of Chinese Academy of Science, Wenzhou, China
| | - Sen Lin
- School of Ophthalmology & Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China.,State Key Laboratory of Ophthalmology, Optometry and Visual Science, Wenzhou Medical University, Wenzhou, China.,Wenzhou Institute, University of Chinese Academy of Science, Wenzhou, China
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Deng A, Yang Y, Du S, Yang X, Pang S, Wang X, Yang S. Preparation of a recombinant collagen-peptide (RHC)-conjugated chitosan thermosensitive hydrogel for wound healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 119:111555. [DOI: 10.1016/j.msec.2020.111555] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 08/18/2020] [Accepted: 09/22/2020] [Indexed: 12/22/2022]
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30
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Pita-López ML, Fletes-Vargas G, Espinosa-Andrews H, Rodríguez-Rodríguez R. Physically cross-linked chitosan-based hydrogels for tissue engineering applications: A state-of-the-art review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110176] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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31
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Taymouri S, Minaiyan M, Ebrahimi F, Tavakoli N. In-vitro and in-vivo evaluation of chitosan-based thermosensitive gel containing lorazepam NLCs for the treatment of status epilepticus. IET Nanobiotechnol 2021; 14:148-154. [PMID: 32433032 DOI: 10.1049/iet-nbt.2019.0156] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The objective of this study was to develop an in-situ gel containing lorazepam (LZM) loaded nanostructured lipid carriers (NLCs) for direct nose-to-brain delivery in order to increase drug therapeutic efficacy in the treatment of epilepsy. Accordingly, LZM loaded NLCs were formulated using emulsification solvent diffusion and evaporation method; then the effects of the formulation variables on different physicochemical characteristics of NLCs were investigated. Thermosensitive in-situ gels containing LZM-NLCs were prepared using a combination of chitosan and β-glycerol phosphate (β-GP). The anticonvulsant efficacy of LZM-NLCs-Gel was then examined using the pentylenetetrazole (PTZ) model. The optimised NLCs were spherical, showing the particle size of 71.70 ± 5.16 nm and the zeta potential of -20.06 ± 2.70 mV. The pH and gelation time for the chitosan solution with 15% (w/v) β-GP were determined to be 7.12 ± 0.03 and 5.33 ± 0.58 min, respectively. The in-vivo findings showed that compared with the control group and the group that received LZM-Gel, the occurrence of PTZ-induced seizures in the rats was significantly reduced by LZM-NLCs-Gel after intranasal administration. These results, therefore, suggested that the LZM-NLCs-Gel system could have potential applications for brain targeting through nasal route and might increase LZM therapeutic efficacy in the treatment of epilepsy.
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Affiliation(s)
- Somayeh Taymouri
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohsen Minaiyan
- Department of Pharmacology, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farnaz Ebrahimi
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Naser Tavakoli
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran.
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Wang Z, Guan Y, Yang R, Li J, Wang J, Jia AQ. Anti-inflammatory activity of 3-cinnamoyltribuloside and its metabolomic analysis in LPS-activated RAW 264.7 cells. BMC Complement Med Ther 2020; 20:329. [PMID: 33138805 PMCID: PMC7607671 DOI: 10.1186/s12906-020-03115-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 10/09/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Inflammation is a response to tissue injuries, which is indispensable and important for human health, but excessive inflammation can potentially cause damage to the host organisms. Camellia nitidissima Chi, one traditional medicinal and edible plant in China, was reported to exhibit anti-inflammation capability. Hence, this study was conducted to isolate the bioactive compounds from the flowers of C. nitidissima Chi and evaluate their anti-inflammatory activity. METHODS The phytochemicals from the flowers of C. nitidissima Chi were isolated and purified by silica gel, Sephadex LH-20 gel, C18 reversed silica gel, semi-preparative HPLC, and identified by the spectrum technologies. The anti-inflammatory activity of isolated compounds was evaluated using cultured macrophage RAW 264.7 cells. Whereafter the potential metabolic mechanism of the anti-inflammatory activity of the bioactive compound was investigated by a 1H-NMR based metabolomics approach. The metabolites in 1H-NMR spectra were identified by querying the Human Metabolome Database and Madison Metabolomics Consortium Database online. And the multivariate statistical analysis was performed to evaluate the variability of metabolites among samples and between sample classes. RESULTS The compound isolated from the flowers of C. nitidissima Chi was identified as 3-cinnamoyltribuloside (3-CT). 3-CT could inhibit the NO production and the mRNA expression of iNOS involved in lipopolysaccharide (LPS)-activated RAW 264.7 cells. Moreover, 3-CT could inhibit the expression of a series of inflammatory cytokines, including TNF-α, IL-1β, and IL-6, both at the mRNA level and protein level. The 1H-NMR based metabolomics approach was applied to investigate the potential metabolic mechanism of the anti-inflammatory activity of 3-CT. Thirty-five metabolites were identified and assigned. Orthogonal signal correction partial least-squares discriminant analysis (OSC-PLS-DA) of the 1H-NMR data showed 3-CT could balance the significant changes in many endogenous metabolites (e.g., choline, glucose, phenylalanine) induced by LPS in RAW 264.7 cells, which related to cholinergic anti-inflammatory pathway, oxidative stress, energy metabolism, and amino acids metabolism. CONCLUSION 3-CT, isolated from the flowers of C. nitidissima Chi, had potent anti-inflammatory activity in LPS-activated RAW 264.7 cells. Furthermore, our results indicated that 3-CT had effects on the cholinergic anti-inflammatory pathway, oxidative stress, energy metabolism, and amino acids metabolism in LPS-activated RAW 264.7 cells.
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Affiliation(s)
- Zhennan Wang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
- School of Life and Pharmaceutical Sciences, Key Laboratory of Tropical Biological Resources of Ministry Education, Hainan University, Haikou, 570228, China
| | - Ying Guan
- Inspection and Pattern Evaluation Department, Suzhou Institute of Metrology, Suzhou, 215000, China
| | - Rui Yang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Junjian Li
- School of Life and Pharmaceutical Sciences, Key Laboratory of Tropical Biological Resources of Ministry Education, Hainan University, Haikou, 570228, China
| | - Junsong Wang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ai-Qun Jia
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
- School of Life and Pharmaceutical Sciences, Key Laboratory of Tropical Biological Resources of Ministry Education, Hainan University, Haikou, 570228, China.
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Panyamao P, Ruksiriwanich W, Sirisa-ard P, Charumanee S. Injectable Thermosensitive Chitosan/Pullulan-Based Hydrogels with Improved Mechanical Properties and Swelling Capacity. Polymers (Basel) 2020; 12:E2514. [PMID: 33126695 PMCID: PMC7692642 DOI: 10.3390/polym12112514] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/18/2020] [Accepted: 10/26/2020] [Indexed: 12/12/2022] Open
Abstract
Thermosensitive chitosan/β-glycerophosphate (CS/BGP) systems have been developed as injectable hydrogels. However, the hydrogels exhibited poor mechanical properties due to their physically crosslinked networks. In this work, CS/BGP hydrogels were reinforced by covalent crosslinking using genipin (GE) and concomitantly semi-interpenetrating networks using pullulan (PL). Based on response surface methodology, the optimized formulation was composed of CS (1.05%, w/v), PL (1%, w/v), BGP (6%, w/v), and GE (70.79 mcg/mL). The optimized hydrogels exhibited Young's modulus of 92.65 ± 4.13 kPa and a percentage of equilibrium swelling ratio of 3259.09% ± 58.90%. Scanning electron micrographs revealed a highly porous structure with nanofibrous networks in the CS/PL/BGP/GE hydrogels. The chemical interactions between the compositions were investigated by Fourier-transform infrared spectroscopy. Rheological measurements illustrated that the optimized hydrogels displayed sol-gel transition within one minute at 37 °C, a lower critical solution temperature of about 31 °C, and viscoelastic behavior with high storage modulus. Furthermore, the optimized hydrogels demonstrated higher resistance to in vitro enzymatic degradation, compared to the hydrogels without GE. Our findings could suggest that the thermosensitive CS/PL/BGP/GE hydrogels with enhanced mechanical properties and swelling capacity demonstrate the potential for use as scaffolds and carriers for cartilage tissue engineering and drug delivery applications.
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Affiliation(s)
- Prakasit Panyamao
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
| | - Warintorn Ruksiriwanich
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
- Cluster of Research and Development of Pharmaceutical and Natural Products Innovation for Human or Animal, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Panee Sirisa-ard
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
| | - Suporn Charumanee
- Department of Pharmaceutical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (P.P.); (W.R.); (P.S.-a.)
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Fadera S, Cheng NC, Young TH, Lee IC. In vitro study of SDF-1α-loaded injectable and thermally responsive hydrogels for adipose stem cell therapy by SDF-1/CXCR4 axis. J Mater Chem B 2020; 8:10360-10372. [PMID: 33108417 DOI: 10.1039/d0tb01961e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Stem cell-based approaches have become a promising therapeutic strategy for treating ischemic diseases. The aim of this study was to develop injectable hydrogel systems for the local release of stromal cell-derived factor-1α (SDF-1α) to recruit adipose stem cells (ASCs) that express CXCR4 to achieve stem cell therapy and therapeutic angiogenesis. Thermoresponsive and injectable chitosan (CS)/β-glycerophosphate disodium salt pentahydrate (βGP) hydrogels with different concentrations of hyaluronic acid (HA) were designed and fabricated to achieve local and sustained release of SDF-1α for ASC recruitment. Herein, the material structures, physical properties, gelation temperature, and gelation time of hydrogels with different compositions were determined. The incorporation of 0.9% HA in CS-based hydrogels not only enhanced the gelation time but also increased the strength of the hydrogels. In addition, the results revealed that the thermoresponsive and injectable CS/βGP/HA hydrogels showed good biocompatibility. In addition, the in vitro release profiles showed that the hydrogels achieved sustained release of SDF-1α over 7 days and enhanced ASC migration. The results revealed that the hydrogels with HA enhanced the sustained release effect compared with the hydrogel without HA, indicating that the HA content regulated the physical and release properties of the injectable hydrogels. Therefore, thermoresponsive and injectable CS/βGP/HA hydrogels may provide an alternative for treating ischemic diseases via SDF-1/CXCR4 axis for ASC recruitment and retention.
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Affiliation(s)
- Siaka Fadera
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
| | - Nai-Chen Cheng
- Department of Surgery, National Taiwan University Hospital and College of Medicine, 7 Chung-Shan S Rd, Taipei 100, Taiwan
| | - Tai-Horng Young
- Department of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, 1 Jen-Ai Rd, Taipei 100, Taiwan.
| | - I-Chi Lee
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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Development of Injectable Thermosensitive Chitosan-Based Hydrogels for Cell Encapsulation. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10186550] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The three-dimensional complexity of the native extracellular matrix (ECM) suggests switching from 2D to 3D culture systems for providing the cells with an architecture more similar to the physiological environment. Reproducing the three-dimensionality in vitro can guarantee beneficial effects in terms of cell growth, adhesion, proliferation, and/or their differentiation. Hydrogels have the same tailorable physico-chemical and biological characteristics as ECM materials. In this study, we propose a thermoresponsive chitosan-based hydrogel that gels thanks to the addition of organic and inorganic salt solutions (beta-glycerolphosphate and sodium hydrogen carbonate) and is suitable for cell encapsulation allowing obtaining 3D culture systems. Physico-chemical analyses showed that the hydrogel formulations jellify at physiological conditions (37 °C, pH 7.4), are stable in vitro up to three weeks, have high swelling ratios and mechanical stiffness suitable for cellular encapsulation. Moreover, preliminary biological tests underlined the pronounced biocompatibility of the system. Therefore, these chitosan-based hydrogels are proposed as valid biomaterials for cell encapsulation.
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Wang H, Zhou S, Guo L, Wang Y, Feng L. Intelligent Hybrid Hydrogels for Rapid In Situ Detection and Photothermal Therapy of Bacterial Infection. ACS APPLIED MATERIALS & INTERFACES 2020; 12:39685-39694. [PMID: 32805886 DOI: 10.1021/acsami.0c12355] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Diseases induced by bacterial infections increasingly threaten the health of people all over the world; thus, it is urgent and significant to early diagnose and effectively eliminate infections to save people's lives. To this end, we synthesized an intelligent hydrogel that integrated in situ visualized diagnosis and photothermal therapy of bacterial infections. By simply and subtly incorporating pH-sensitive bromothymol blue (BTB) and near-infrared (NIR)-absorbing conjugated polymer (termed as PTDBD) into thermosensitive chitosan (CS)-based hydrogel, the synthesized BTB/PTDBD/CS hydrogel can diagnose the acidic microenvironment of Staphylococcus aureus (S. aureus) biofilm and infected wounds by showing visualized color change. After rapid diagnosis, the hydrogel can immediately treat the infection site by local hyperthermia under irradiation of NIR laser (808 nm) and even the stubborn biofilm that is difficult to eradicate. Since the dominating antibacterial mechanism is hyperthermia, the hybrid hydrogel shows broad-spectrum antibacterial activity against Gram-positive, Gram-negative, and drug-resistant bacteria. In addition, it has low cytotoxicity to normal cells and no effect on the main organs of mice. It paves a brand new avenue to develop smart and facile diagnosis and a treatment platform for bacterial infections.
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Affiliation(s)
- Haoping Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
| | - Sirong Zhou
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
| | - Lixia Guo
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
| | - Yunxia Wang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
| | - Liheng Feng
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, P. R. China
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Pakzad Y, Fathi M, Omidi Y, Mozafari M, Zamanian A. Synthesis and characterization of timolol maleate-loaded quaternized chitosan-based thermosensitive hydrogel: A transparent topical ocular delivery system for the treatment of glaucoma. Int J Biol Macromol 2020; 159:117-128. [DOI: 10.1016/j.ijbiomac.2020.04.274] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 12/12/2022]
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38
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S P, Jaiswal AK. Effect of interpolymer complex formation between chondroitin sulfate and chitosan-gelatin hydrogel on physico-chemical and rheological properties. Carbohydr Polym 2020; 238:116179. [DOI: 10.1016/j.carbpol.2020.116179] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/09/2020] [Accepted: 03/13/2020] [Indexed: 01/03/2023]
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Sun M, Wang T, Pang J, Chen X, Liu Y. Hydroxybutyl Chitosan Centered Biocomposites for Potential Curative Applications: A Critical Review. Biomacromolecules 2020; 21:1351-1367. [DOI: 10.1021/acs.biomac.0c00071] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Mengjie Sun
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, P.R. China
| | - Ting Wang
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, P.R. China
| | - Jianhui Pang
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, P.R. China
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, P.R. China
- Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266000, P.R. China
| | - Ya Liu
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, P.R. China
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In-situ forming chitosan implant-loaded with raloxifene hydrochloride and bioactive glass nanoparticles for treatment of bone injuries: Formulation and biological evaluation in animal model. Int J Pharm 2020; 580:119213. [PMID: 32165229 DOI: 10.1016/j.ijpharm.2020.119213] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/01/2020] [Accepted: 03/07/2020] [Indexed: 01/19/2023]
Abstract
In-situ forming implants receive great attention for repairing serious bone injuries. The aim of the present study was to prepare novel chitosan in-situ forming implants (CIFI) loaded with bioactive glass nanoparticles and/or raloxifene hydrochloride (RLX). Incorporating raloxifene hydrochloride (RLX) as a selective estrogen receptor modulator was essential to make use of its anti-resorptive properties. The prepared formulae were tested for their in-vitro gelation time, drug release, injectability, rheological properties, erosion rate and morphological properties. Results revealed that the formulation composed of 1% (w/v) chitosan with 2% (w/v) NaHCO3 and 1% (w/v) bioactive glass nanoparticles (CIFI-BG) possessed the most sustained drug release profile which extended over four months with low burst release effect compared to the same formulation lacking bioactive glass nanoparticles (CIFI). Selected formulations were tested for their ability to enhance bone regeneration in induced puncture in rate tibia. Results declared that these formulations were able to enhance bone regeneration after 12 weeks in comparison to the untreated tibial punctures and that containing bioactive glass could be considered as novel approach for treatment of serious bone injuries which require long term treatment and internal mechanical bone support during healing.
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Kocak FZ, Talari AC, Yar M, Rehman IU. In-Situ Forming pH and Thermosensitive Injectable Hydrogels to Stimulate Angiogenesis: Potential Candidates for Fast Bone Regeneration Applications. Int J Mol Sci 2020; 21:E1633. [PMID: 32120998 PMCID: PMC7084557 DOI: 10.3390/ijms21051633] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/15/2020] [Accepted: 02/24/2020] [Indexed: 12/20/2022] Open
Abstract
Biomaterials that promote angiogenesis are required for repair and regeneration of bone. In-situ formed injectable hydrogels functionalised with bioactive agents, facilitating angiogenesis have high demand for bone regeneration. In this study, pH and thermosensitive hydrogels based on chitosan (CS) and hydroxyapatite (HA) composite materials loaded with heparin (Hep) were investigated for their pro-angiogenic potential. Hydrogel formulations with varying Hep concentrations were prepared by sol-gel technique for these homogeneous solutions were neutralised with sodium bicarbonate (NaHCO3) at 4 °C. Solutions (CS/HA/Hep) constituted hydrogels setting at 37 °C which was initiated from surface in 5-10 minutes. Hydrogels were characterised by performing injectability, gelation, rheology, morphology, chemical and biological analyses. Hydrogel solutions facilitated manual dropwise injection from 21 Gauge which is highly used for orthopaedic and dental administrations, and the maximum injection force measured through 19 G needle (17.191 ± 2.296N) was convenient for manual injections. Angiogenesis tests were performed by an ex-ovo chick chorioallantoic membrane (CAM) assay by applying injectable solutions on CAM, which produced in situ hydrogels. Hydrogels induced microvascularity in CAM assay this was confirmed by histology analyses. Hydrogels with lower concentration of Hep showed more efficiency in pro-angiogenic response. Thereof, novel injectable hydrogels inducing angiogenesis (CS/HA/Hep) are potential candidates for bone regeneration and drug delivery applications.
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Affiliation(s)
- Fatma Z. Kocak
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK; (F.Z.K.)
| | | | - Muhammad Yar
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Punjab 54000, Pakistan;
| | - Ihtesham U. Rehman
- Engineering Department, Lancaster University, Lancaster LA1 4YW, UK; (F.Z.K.)
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Ke X, Li M, Wang X, Liang J, Wang X, Wu S, Long M, Hu C. An injectable chitosan/dextran/β -glycerophosphate hydrogel as cell delivery carrier for therapy of myocardial infarction. Carbohydr Polym 2020; 229:115516. [DOI: 10.1016/j.carbpol.2019.115516] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 10/18/2019] [Accepted: 10/21/2019] [Indexed: 12/13/2022]
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Evaluation of Chitosan Hydrogel for Sustained Delivery of VEGF for Odontogenic Differentiation of Dental Pulp Stem Cells. Stem Cells Int 2019; 2019:1515040. [PMID: 31949434 PMCID: PMC6942904 DOI: 10.1155/2019/1515040] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 11/14/2019] [Accepted: 11/25/2019] [Indexed: 02/05/2023] Open
Abstract
The pulpotomy with pulp capping is aimed at retaining vital pulp with reparative dentin formation. Vascular endothelial growth factor (VEGF) plays a crucial role in dentin regeneration; however, its constant administrations in the human body is still problematic. Chitosan was widely studied as an effective carrier to deliver bioactive molecules in regenerative medicine. In this study, we conducted a chitosan/β-glycerophosphate (CS/β-GP) hydrogel as a VEGF-sustained release system and explored its effects on dental pulp stem cells (DPSCs). CS/β-GP hydrogel was manufactured using a sol-gel method. SEM assay showed the spongy and porous microstructure of the lyophilized hydrogels. DPSCs cultured in the CS/β-GP hydrogel kept adhesion and vitality. CCK-8 assay tested the promoted proliferation activity of DPSCs on the hydrogel. Besides, the added VEGF protein could continually release from VEGF/CS/β-GP hydrogel. The VEGF/CS/β-GP hydrogel could promote the odontogenic differentiation of DPSCs better than VEGF treatment without hydrogel. Our results suggested that CS/β-GP hydrogel could continually release VEGF and contribute to odontogenic differentiation of DPSCs, thus may become a potential carrier of bioactive molecules in pulp capping therapy.
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Wahba MI. Enhancement of the mechanical properties of chitosan. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 31:350-375. [PMID: 31766978 DOI: 10.1080/09205063.2019.1692641] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Chitosan (CS) has been investigated for copious applications in the biomedical, industrial and environmental fields owing to its diverse advantageous traits. Nevertheless, CS exhibits debilitated mechanical stability. This debilitated mechanical stability constitutes an obstacle to nearly all of CS's applications. Hence, in this review we discussed different approaches that could be adopted in order to escalate the mechanical properties of CS. Chemical cross-linking was among these approaches where CS was chemically cross-linked with various agents, such as glutaraldehyde, vanillin, and genipin. Different plasticizers were also incorporated with CS. Moreover, nano-materials were added to CS so as to form nano-composites of enhanced mechanical properties. Porogens were also employed to increase the surface area available for the CS's physical and chemical cross-linking processes. Other reports attempted to modify the fabrication conditions and gelling system of CS as a means of producing mechanically stable CS gels.
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Affiliation(s)
- Marwa I Wahba
- Department of Chemistry of Natural and Microbial Products, National Research Centre, Giza, Egypt.,Centre of Scientific Excellence-Group of Advanced Materials and Nanobiotechnology, National Research Centre, Giza, Egypt
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Wasupalli GK, Verma D. Injectable and thermosensitive nanofibrous hydrogel for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110343. [PMID: 31761212 DOI: 10.1016/j.msec.2019.110343] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/16/2019] [Accepted: 10/19/2019] [Indexed: 01/28/2023]
Abstract
The use of injectable hydrogels is currently restricted by the challenge of achieving fast gelation, good mechanical strength, and cytocompatibility. Polymeric self-assembly is a potent tool for generating functional materials that combine multiple characteristics and can react to external factors. In this study, we have developed fiber-reinforced composite hydrogels that exhibits significantly enhanced mechanical strength, reduced gelling time, and excellent cytocompatibility. The practicability of developing a chitosan-based thermogelling solution using hydroxyapatite and polyelectrolyte complex (PEC) self-assembled fibers were evaluated. The effect of βGP concentration on gelation time was studied by varying the concentration of βGP added to the chitosan solution. Various combinations were tested to create a suitable hydrogel environment for cell encapsulation, growth, and proliferation at physiological pH and temperature. Determination of Young modulus revealed that PEC fibers reinforced hydrogel was three times stiffer than chitosan-βGP gels. The gelation time was reduced to 3 min, and the hydrogels had porous structures and gels at physiological pH, temperature, and showed >80% viability for MTT assay to MG63 cells. Moreover, confocal imaging of PEC fiber reinforced hydrogels showed noticeable viability and proliferation. The molecular interactions between gelling agents, polyelectrolytes, and hydroxyapatite were studied using FTIR. We investigated interfacial bonding between PEC fibers with βGP, NaHCO3, and HAp. The combination of hydroxyapatite and polymer self-assembly technique improved the efficiency of injectable hydrogels that are helpful in minimally invasive applications.
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Affiliation(s)
- Geeta Kumari Wasupalli
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Devendra Verma
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India.
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Yang H, Lei K, Zhou F, Yang X, An Q, Zhu W, Yu L, Ding J. Injectable PEG/polyester thermogel: A new liquid embolization agent for temporary vascular interventional therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 102:606-615. [DOI: 10.1016/j.msec.2019.04.075] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 02/07/2019] [Accepted: 04/23/2019] [Indexed: 12/29/2022]
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Fookes FA, Mengatto LN, Rigalli A, Luna JA. Controlled fluoride release for osteoporosis treatment using orally administered chitosan hydrogels. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Tang B, Shan J, Yuan T, Xiao Y, Liang J, Fan Y, Zhang X. Hydroxypropylcellulose enhanced high viscosity endoscopic mucosal dissection intraoperative chitosan thermosensitive hydrogel. Carbohydr Polym 2019; 209:198-206. [DOI: 10.1016/j.carbpol.2018.12.103] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 11/27/2018] [Accepted: 12/31/2018] [Indexed: 01/15/2023]
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49
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Rheological characterization of new thermosensitive hydrogels formed by chitosan, glycerophosphate, and phosphorylated β-cyclodextrin. Carbohydr Polym 2018; 201:471-481. [DOI: 10.1016/j.carbpol.2018.08.076] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/21/2018] [Accepted: 08/19/2018] [Indexed: 01/20/2023]
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Maity S, Ray SS, Chatterjee A, Chakraborty N, Ganguly J. Sugar‐Based Self‐Assembly of Hydrogel Nanotubes Manifesting ESIPT: Theoretical Insight and Application in Live Cell Imaging. ChemistrySelect 2018. [DOI: 10.1002/slct.201800604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Santu Maity
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
| | - Suvonil Sinha Ray
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
| | | | | | - Jhuma Ganguly
- Department of ChemistryIndian Institute of Engineering Science and Technology Howrah- 711103 India
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