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Guan X, Yao H, Wu J. Photocrosslinkable hydrogel of ibuprofen-chitosan methacrylate modulates inflammatory response. J Biomed Mater Res A 2024; 112:2001-2017. [PMID: 38837524 DOI: 10.1002/jbm.a.37758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/20/2024] [Accepted: 05/25/2024] [Indexed: 06/07/2024]
Abstract
Methacrylated biopolymers are unique and attractive in preparing photocrosslinkable hydrogels in biomedical applications. Here we report a novel chitosan (CS) derivative-based injectable hydrogel with anti-inflammatory capacity via methacrylation modification. First, ibuprofen (IBU) was conjugated to the backbone of CS by carbodiimide chemistry to obtain IBU-CS conjugate, which converts water-insoluble unmodified CS into water-soluble IBU-CS conjugate. The IBU-CS conjugate did not precipitate at the pH of 7, which was beneficial to subsequent chemical modification with methacrylic anhydride to prepare IBU-CS methacrylate (IBU-CS-MA) with significantly higher methacrylation substitution. Photocrosslinkable in situ gel formation of injectable IBU-CS-MA hydrogel was verified using lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) initiator under visible light. The IBU-CS-MA hydrogel showed good cytocompatibility as revealed by encapsulating and in vitro culturing murine fibroblasts within hydrogels. It promoted macrophage polarization toward M2 phenotype, as well as downregulated pro-inflammatory gene expression and upregulated anti-inflammatory gene expression of macrophages. The hydrogel also significantly reduced the reactive oxygen specifies (ROS) and nitrogen oxide (NO) produced by lipopolysaccharides (LPS)-stimulated macrophages. Upon subcutaneous implantation in a rat model, it significantly mitigated inflammatory responses as shown by significantly lower inflammatory cell density, less cell infiltration, and much thinner fibrous capsule compared with CS methacrylate (CS-MA) hydrogel. This study suggests that IBU-CS conjugate represents a feasible strategy for preparing CS-based methacrylate hydrogels for biomedical applications.
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Affiliation(s)
- Xiangheng Guan
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Department of Biomedical Engineering, Donghua University, Shanghai, People's Republic of China
| | - Haochen Yao
- Department of Hepatobiliary and Pancreatic Surgery, General Surgery Center, First Hospital of Jilin University, Changchun, People's Republic of China
| | - Jinglei Wu
- Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Department of Biomedical Engineering, Donghua University, Shanghai, People's Republic of China
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2
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Zhang Z, Sun H, Giannino J, Wu Y, Cheng C. Biodegradable Zwitterionic Polymers as PEG Alternatives for Drug Delivery. JOURNAL OF POLYMER SCIENCE 2024; 62:2231-2250. [PMID: 39247254 PMCID: PMC11376432 DOI: 10.1002/pol.20230916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/01/2024] [Indexed: 09/10/2024]
Abstract
Poly(ethylene glycol) (PEG) is a highly biocompatible and water-soluble polymer that is widely utilized for biomedical applications. Unfortunately, the immunogenicity and antigenicity of PEG severely restrict the biomedical efficacy of pegylated therapeutics. As emerging PEG alternatives, biodegradable zwitterionic polymers (ZPs) have attracted significant interest in recent years. Biodegradable ZPs generally are not only water-soluble and immunologically inert, but also possess a range of favorable biomedically relevant properties, without causing long-term side effects for in vivo biomedical applications. This review presents a systematic overview of recent studies on biodegradable ZPs. Their structural designs and synthetic strategies by integrating biodegradable base polymers with zwitterions are addressed. Their applications in the delivery of small molecule drugs (as mono-drugs or multi-drugs) and proteins are highlighted.
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Affiliation(s)
- Ziwen Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260
| | - Haotian Sun
- Department of Chemical and Biological Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260
| | - Justin Giannino
- Department of Biomedical Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260
| | - Yun Wu
- Department of Biomedical Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260
- Cell, Gene and Tissue Engineering Center, University at Buffalo, the State University of New York, Buffalo, NY 14260
| | - Chong Cheng
- Department of Chemical and Biological Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260
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3
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Cai Y, Xin L, Li H, Sun P, Liu C, Fang L. Mussel-inspired controllable drug release hydrogel for transdermal drug delivery: Hydrogen bond and ion-dipole interactions. J Control Release 2024; 365:161-175. [PMID: 37972766 DOI: 10.1016/j.jconrel.2023.11.016] [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: 09/29/2023] [Revised: 11/02/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
Hydrogels have broad application prospects in drug delivery due to their biocompatibility, high water content and three-dimensional structure. However, the regulation of drug release from hydrogels is an important issue in medical applications. At the same time, water also has an important impact on drug release. In this study, a hydrogel with hydrogen bond and ion dipole interaction (PAHDP) was prepared by introducing catechol group into polymer to regulate drug release. Ten model drugs were selected to explore the relationship and mechanism of action among polymer, drug and water. The results showed that PAHDP had excellent adhesion and safety. Drug release test showed that 10 kinds of drugs had different drug release trends, and the release amount was negatively correlated with drug polarizability and LogP. In addition, in vitro transdermal test and pharmacokinetic results showed that the hydrogel based on PAHDP achieved increased or decreased blood drug concentration, and the area under the concentration-time curve (AUC) of >1.5 times showed its potential to regulate drug release. The mechanism study showed that the hydrogen bond and ion dipole interaction between polymer and drug were affected by drug polarizability and LogP, and the distribution of water in different states was changed. Hydrogen bond and ion dipole interactions synergistically control drug release. Therefore, the mussel inspired PAHDP hydrogel has the potential to become a controllable drug delivery system.
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Affiliation(s)
- Yu Cai
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, 977 Gongyuan Road, Yanji 133002, China
| | - Liying Xin
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Hui Li
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Peng Sun
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Chao Liu
- Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Liang Fang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, 977 Gongyuan Road, Yanji 133002, China; Department of Pharmaceutical Sciences, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China.
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4
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Alnawmasi JS. Construction of amino-thiol functionalized ion-imprinted chitosan for lead (II) ion removal. Carbohydr Polym 2023; 308:120596. [PMID: 36813349 DOI: 10.1016/j.carbpol.2023.120596] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/13/2023] [Accepted: 01/15/2023] [Indexed: 01/27/2023]
Abstract
Ion-imprinting technique was used to create a lead ion-imprinted sorbent from an amino-thiol chitosan derivative (Pb-ATCS). First, 3-Nitro-4-sulfanylbenzoic acid (NSB) unit's amidized the chitosan, and then the -NO2-residues were selectively reduced to -NH2. Imprinting was accomplished by cross-linking with epichlorohydrin and removing the Pb (II) ions from the across-linked polymeric complex formed from the amino-thiol chitosan polymer ligand (ATCS) and Pb (II) ions. The synthetic steps have been investigated by nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR), and the sorbent was tested for its ability to selectively bind Pb (II) ions. The produced Pb-ATCS sorbent had a maximum capacity of roughly 300 mg/g, and it showed a greater affinity for the Pb (II) ions than the control NI-ATCS sorbent particle. The pseudo-2nd-order equation was also consistent with the adsorption kinetics of the sorbent, which were quite rapid. This demonstrated that metal ions were chemo-adsorbed onto the Pb-ATCS and NI-ATCS solid surfaces via coordination with the introduced amino-thiol moieties.
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Affiliation(s)
- Jawza Sh Alnawmasi
- Department of Chemistry, College of Science, Qassim University, Buraydah, 51452, Qassim, Saudi Arabia.
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5
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Pourmadadi M, Rahmani E, Shamsabadipour A, Samadi A, Esmaeili J, Arshad R, Rahdar A, Tavangarian F, Pandey S. Novel Carboxymethyl cellulose based nanocomposite: A Promising Biomaterial for Biomedical Applications. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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6
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Nath PC, Debnath S, Sharma M, Sridhar K, Nayak PK, Inbaraj BS. Recent Advances in Cellulose-Based Hydrogels: Food Applications. Foods 2023; 12:foods12020350. [PMID: 36673441 PMCID: PMC9857633 DOI: 10.3390/foods12020350] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
In the past couple of years, cellulose has attracted a significant amount of attention and research interest due to the fact that it is the most abundant and renewable source of hydrogels. With increasing environmental issues and an emerging demand, researchers around the world are focusing on naturally produced hydrogels in particular due to their biocompatibility, biodegradability, and abundance. Hydrogels are three-dimensional (3D) networks created by chemically or physically crosslinking linear (or branching) hydrophilic polymer molecules. Hydrogels have a high capacity to absorb water and biological fluids. Although hydrogels have been widely used in food applications, the majority of them are not biodegradable. Because of their functional characteristics, cellulose-based hydrogels (CBHs) are currently utilized as an important factor for different aspects in the food industry. Cellulose-based hydrogels have been extensively studied in the fields of food packaging, functional food, food safety, and drug delivery due to their structural interchangeability and stimuli-responsive properties. This article addresses the sources of CBHs, types of cellulose, and preparation methods of the hydrogel as well as the most recent developments and uses of cellulose-based hydrogels in the food processing sector. In addition, information regarding the improvement of edible and functional CBHs was discussed, along with potential research opportunities and possibilities. Finally, CBHs could be effectively used in the industry of food processing for the aforementioned reasons.
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Affiliation(s)
- Pinku Chandra Nath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Shubhankar Debnath
- Department of Bio Engineering, National Institute of Technology Agartala, Jirania 799046, India
| | - Minaxi Sharma
- Haute Ecole Provinciale de Hainaut-Condorcet, 7800 Ath, Belgium
| | - Kandi Sridhar
- Department of Food Technology, Karpagam Academy of Higher Education, Coimbatore 641021, India
| | - Prakash Kumar Nayak
- Department of Food Engineering and Technology, Central Institute of Technology Kokrajhar, Kokrajhar 783370, India
- Correspondence: (P.K.N.); or (B.S.I.)
| | - Baskaran Stephen Inbaraj
- Department of Food Science, Fu Jen Catholic University, New Taipei City 242062, Taiwan
- Correspondence: (P.K.N.); or (B.S.I.)
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7
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A novel visible light-curing chitosan-based hydrogel membrane for Guided Tissue Regeneration. Colloids Surf B Biointerfaces 2022; 218:112760. [DOI: 10.1016/j.colsurfb.2022.112760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 11/21/2022]
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8
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Sochilina AV, Akasov RA, Arkharova NA, Klechkovskaya VV, Mironov AV, Prostyakova AI, Sholina NV, Zubov VP, Generalova AN, Vikhrov AA. Fabrication of moldable chitosan gels via thermally induced phase separation in aqueous alcohol solutions. Int J Biol Macromol 2022; 215:501-511. [PMID: 35716792 DOI: 10.1016/j.ijbiomac.2022.06.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/08/2022] [Accepted: 06/12/2022] [Indexed: 01/09/2023]
Abstract
Wide application of chitosan in modern technologies is limited by the lack of reliable and low-cost techniques to prepare size-tuned constructs with a complex surface morphology, improved optical and mechanical properties. We report a new simple method for preparation of transparent thermoreversible chitosan alcogels from chitosan/H2O/ethanol ternary systems. This method, termed "low temperature thermally induced phase separation under non-freezing conditions" (LT-TIPS-NF), fine tunes gelation by adjusting only temperature (from 5 to -25 °C) and varying the initial content of chitosan (from 0.5 to 2.0 wt%) and ethanol (from 28.5 to 47.5 vol%). Transparent non-swelling final constructs of complex shape are prepared by fixing the pre-formed alcogels with a base solution. The size of the gel constructs is limited only by the dimensions of the mold and the cooling chamber. The LT-TIPS-NF is applicable both in injection molding and 3D printing techniques. The in vitro and in vivo experiments show the absence of prominent cytotoxicity and well-defined cell adhesion on the obtained hydrogels. Thus, this facile and scalable technique provides the multifunctional chitosan gel preparation with easily controlled properties exploiting inexpensive, renewable, and environmentally friendly source polysaccharide. These materials have prospects for a variety of uses, especially for biomedical applications.
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Affiliation(s)
- Anastasia V Sochilina
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia; Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia.
| | - Roman A Akasov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia; Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia; I.M. Sechenov First Moscow State Medical University, Trubetskaya St., 8/2, Moscow 119991, Russia
| | - Natalia A Arkharova
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia
| | - Vera V Klechkovskaya
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia
| | - Anton V Mironov
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia
| | - Anna I Prostyakova
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
| | - Natalya V Sholina
- Federal Scientific Research Centre "Crystallography and Photonics" RAS, Leninsky prospect, 59, Moscow 119333, Russia; Morozovskaya Children's City Clinical Hospital, 4th Dobryninsky Lane, 1/9, Moscow 119049, Russia
| | - Vitaly P Zubov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
| | - Alla N Generalova
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
| | - Alexander A Vikhrov
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Miklukho-Maklaya str., 16/10, Moscow 117997, Russia
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9
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Recent advances of chitosan-based polymers in biomedical applications and environmental protection. JOURNAL OF POLYMER RESEARCH 2022. [PMCID: PMC9167648 DOI: 10.1007/s10965-022-03121-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Interest in polymer-based biomaterials such as chitosan and its modifications and also the methods of their application in various fields of science is uninterruptedly growing. Owing to unique physicochemical, biological, ecological, physiological properties, such as biocompatibility, biodegradability, stability in the natural environment, non-toxicity, high biological activity, economic affordability, chelating of metal ions, high sorption properties, chitosan is used in various biomedical and industrial processes. The reactivity of the amino and hydroxyl groups in the structure makes it more interesting for diverse applications in drug delivery, tissue engineering, wound healing, regenerative medicine, blood anticoagulation and bone, tendon or blood vessel engineering, dentistry, biotechnology, biosensing, cosmetics, water treatment, agriculture. Taking into account the current situation in the world with COVID-19 and other viruses, chitosan is also active in the form of a vaccine system, it can deliver antibodies to the nasal mucosa and load gene drugs that prevent or disrupt the replication of viral DNA/RNA, and deliver them to infected cells. The presented article is an overview of the nowaday state of the application of chitosan, based on literature of recent years, showing importance of fundamental and applied studies aimed to expand application of chitosan-based polymers in many fields of science.
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10
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Xia M, Gao R, Xu G, You Y, Li X, Dou J, Fan F. Fabrication and investigation of novel monochloroacetic acid fortified, tripolyphosphate-crosslinked chitosan for highly efficient adsorption of uranyl ions from radioactive effluents. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128461. [PMID: 35228076 DOI: 10.1016/j.jhazmat.2022.128461] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/24/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Chitosan crosslinked with potassium tripolyphosphate (CTPP) and monochloroacetic-acid-modified chitosan crosslinked with potassium tripolyphosphate (MCTPP) were synthesized for removing UO22+ from acidic radioactive effluents. The influential factors, operational requirements, and interactive mechanisms of the adsorption process were systematically investigated. The mesh-structured composites adsorbed UO22+ most effectively at pH 5.0. The maximum adsorption capacities for pure chitosan, CTPP, and MCTPP were 374.93, 780.89, and 1487.72 mg/g, respectively. Batch experiments indicated that the pH and adsorbent dose strongly influenced UO22+ adsorption. MCTPP could adsorb most UO22+ within 15 min, and equilibrium was reached by ~1 h. The adsorption isotherms indicated that UO22+ adsorption by MCTPP may be an endothermic single-layer adsorption process. Moreover, common metal ions in single-metal systems only slightly affected this process. The results of instrumental characterization and natural water application suggested that the highly developed pore structure and abundant tripolyphosphate groups in synthesized composites were dominant adsorption contributors besides amino and hydroxyl groups. Successful development of the novel material for efficiently adsorbing UO22+ and identification of the adsorption mechanism will provide valuable guidance to chitosan modification and further remediation practices of radioactive effluents.
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Affiliation(s)
- Meng Xia
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Ran Gao
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ 85721, USA
| | - Guangming Xu
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Yue You
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Xindai Li
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Junfeng Dou
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
| | - Fuqiang Fan
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China.
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11
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Elsayed NH, Monier M, Alatawi RA, Albalawi MA, Alhawiti AS. Preparation of chromium (III) ion-imprinted polymer based on azo dye functionalized chitosan. Carbohydr Polym 2022; 284:119139. [DOI: 10.1016/j.carbpol.2022.119139] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/26/2021] [Accepted: 01/10/2022] [Indexed: 01/11/2023]
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12
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Almutairi FM, Monier M, Alatawi RA, Alhawiti AS, Al-Rasheed HH, Almutairi TM, Elsayed NH. Synthesis of photo-crosslinkable hydrogel membranes for entrapment of lactase enzyme. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Designing of modified ion-imprinted chitosan particles for selective removal of mercury (II) ions. Carbohydr Polym 2022; 286:119207. [DOI: 10.1016/j.carbpol.2022.119207] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/23/2022]
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14
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Ma XB, Yang R, Sekhar KPC, Chi B. Injectable Hyaluronic Acid/Poly(γ-glutamic acid) Hydrogel with Step-by-step Tunable Properties for Soft Tissue Engineering. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [PMCID: PMC8093128 DOI: 10.1007/s10118-021-2558-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Injectable hydrogels as an important class of biomaterials have gained much attention in tissue engineering. However, their crosslinking degree is difficult to be controlled after being injected into body. As we all know, the crosslinking degree strongly influences the physicochemical properties of hydrogels. Therefore, developing an injectable hydrogel with tunable crosslinking degree in vivo is important for tissue engineering. Herein, we present a dual crosslinking strategy to prepare injectable hydrogels with step-by-step tunable crosslinking degree using Schiff base reaction and photopolymerization. The developed hyaluronic acid/poly(γ-glutamic acid) (HA/γ-PGA) hydrogels exhibit step-by-step tunable swelling behavior, enzymatic degradation behavior and mechanical properties. Mechanical performance tests show that the storage moduli of HA/γ-PGA hydrogels are all less than 2000 Pa and the compressive moduli are in kilopascal, which have a good match with soft tissue. In addition, NIH 3T3 cells encapsulated in HA/γ-PGA hydrogel exhibit a high cell viability, indicating a good cytocompatibility of HA/γ-PGA hydrogel. Therefore, the developed HA/γ-PGA hydrogel as an injectable biomaterial has a good potential in soft tissue engineering.
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Affiliation(s)
- Xue-Bin Ma
- School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Jinan, 250100 China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Rong Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Kanaparedu P. C. Sekhar
- School of Chemistry and Chemical Engineering, Shandong University, Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, Jinan, 250100 China
| | - Bo Chi
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
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15
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Yang X, Dargaville BL, Hutmacher DW. Elucidating the Molecular Mechanisms for the Interaction of Water with Polyethylene Glycol-Based Hydrogels: Influence of Ionic Strength and Gel Network Structure. Polymers (Basel) 2021; 13:845. [PMID: 33801863 PMCID: PMC8000404 DOI: 10.3390/polym13060845] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/11/2022] Open
Abstract
The interaction of water within synthetic and natural hydrogel systems is of fundamental importance in biomaterial science. A systematic study is presented on the swelling behavior and states of water for a polyethylene glycol-diacrylate (PEGDA)-based model neutral hydrogel system that goes beyond previous studies reported in the literature. Hydrogels with different network structures are crosslinked and swollen in different combinations of water and phosphate-buffered saline (PBS). Network variables, polyethylene glycol (PEG) molecular weight (MW), and weight fraction are positively correlated with swelling ratio, while "non-freezable bound water" content decreases with PEG MW. The presence of ions has the greatest influence on equilibrium water and "freezable" and "non-freezable" water, with all hydrogel formulations showing a decreased swelling ratio and increased bound water as ionic strength increases. Similarly, the number of "non-freezable bound water" molecules, calculated from DSC data, is greatest-up to six molecules per PEG repeat unit-for gels swollen in PBS. Fundamentally, the balance of osmotic pressure and non-covalent bonding is a major factor within the molecular structure of the hydrogel system. The proposed model explains the dynamic interaction of water within hydrogels in an osmotic environment. This study will point toward a better understanding of the molecular nature of the water interface in hydrogels.
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Affiliation(s)
| | | | - Dietmar W. Hutmacher
- Centre for Transformative Biomimetics in Bioengineering, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, QLD 4059, Australia; (X.Y.); (B.L.D.)
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16
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Tan M, Zheng S, Lv H, Wang B, Zhao Q, Zhao B. Rational design and synthesis of chitosan–quinoa polysaccharide composite aerogel and its adsorption properties for Congo red and methylene blue. NEW J CHEM 2021. [DOI: 10.1039/d1nj01212f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This study was performed to investigate the potential application of a chitosan (CS) and quinoa polysaccharide (QS) composite aerogel for the adsorption of dyes from water.
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Affiliation(s)
- Minghui Tan
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Shumin Zheng
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Hongning Lv
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Bao Wang
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Qingsheng Zhao
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Bing Zhao
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- P. R. China
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17
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Elsayed NH, Alatawi RAS, Monier M. Amidoxime modified chitosan based ion-imprinted polymer for selective removal of uranyl ions. Carbohydr Polym 2020; 256:117509. [PMID: 33483030 DOI: 10.1016/j.carbpol.2020.117509] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/21/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022]
Abstract
Ion-imprinting strategy was utilized in the development of UO2(II) imprinted amidoxime modified chitosan sorbent (U-AOCS) that can selectively remove UO2(II) from water. First, cyanoactic acid was linked to the chitosan -NH2 groups and then the inserted -CN groups were converted into amidoxime moieties, which chelate the UO2(II) ions and then the polymer chains were cross-linked by glyoxal. The UO2(II) ions have been then eluted leaving their matching recognition sites. The prepared U-AOCS along with the control NIP displayed maximum capacities toward the UO2(II) ions around 332 and 186 mg/g, respectively, and the isotherms were interpreted better by the Langmuir model in both adsorbents. Moreover, the selective uptake of the uranyl ions in multi-ionic aqueous solutions containing the tetravalent Th(IV) ions, trivalent Al(III), Eu(III), and Fe(III) ions, beside the divalent Pb(II), Co(II), Ni(II), Cu(II) ions confirmed the successful creation of a considerable UO2(II) ions selectivity in the U-AOCS construction. In addition, the U-AOCS adsorbent displayed economic feasibility by maintaining around 95 % of its initial efficiency after the regeneration and reuse for 5 adsorption/desorption cycles.
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Affiliation(s)
- Nadia H Elsayed
- Department of Chemistry, University College-Alwajh, University of Tabuk, Tabuk, Saudi Arabia; Department of Polymers and Pigments, National Research Centre, Dokki, Cairo 12311, Egypt.
| | - Raedah A S Alatawi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - M Monier
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt; Chemistry Department, College of Science, Taibah University, Yanbu Branch, Yanbu El-Bahr, Saudi Arabia.
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18
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Monier M, Bukhari AAH, Elsayed NH. Designing and characterization of copper (II) ion-imprinted adsorbent based on isatin functionalized chitosan. Int J Biol Macromol 2020; 155:795-804. [DOI: 10.1016/j.ijbiomac.2020.03.215] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/15/2020] [Accepted: 03/22/2020] [Indexed: 12/31/2022]
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19
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Elsayed NH, Alatawi A, Monier M. Diacetylmonoxine modified chitosan derived ion-imprinted polymer for selective solid-phase extraction of nickel (II) ions. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104570] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Alonzo-de la Rosa CM, Copes F, Chevallier P, Santillán-Benitez JG, Carbajal-de la Torre G, Mantovani D, Flores-Merino MV. Synthesis and characterization of a polymeric network made of polyethylene glycol and chitosan as a treatment with antibacterial properties for skin wounds. J Biomater Appl 2020; 35:274-286. [PMID: 32356466 DOI: 10.1177/0885328220922384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Polyethylene glycol has been widely investigated for wound healing and dressing applications. Despite its advantages (i.e. great biocompatibility), polyethylene glycol lacks antibacterial activity. For this reason, semi-interpenetrated polymeric networks were prepared by combining a chemically cross-linked polyethylene glycol network with chitosan. The aim of this work was to identify the best amount of chitosan able to improve the antibacterial properties against Staphylococcus aureus. Briefly, the networks were synthesized by a sequential method, adding chitosan in different proportion to the polyethylene glycol. The antibacterial activity was tested following the MGA 0100 of the Pharmacopeia of the United States of Mexico. Fourier-transform infrared with attenuated total reflection spectroscopy, scanning electron microscopy and swelling behavior PBS at 37° C and room temperature were also performed to characterize the polymeric networks. The results showed that PC-2% was able to inhibit the bacterial growth of Staphylococcus aureus even more than Fosfomycin antibiotic. The networks showed cylindrical pores of different sizes (50-100 µm). The maximum swelling of all the networks was achieved in PBS at 37°C (>315%). Free hemoglobin and hemolysis assays were also evaluated to know the compatibility with erythrocytes. Human dermal fibroblasts were used to evaluate direct cytotoxicity. Therefore, the produced gels exerted interesting antibacterial activity and showed good biocompatibility properties.
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Affiliation(s)
- Claudia M Alonzo-de la Rosa
- Faculty of Chemistry, Universidad Autónoma del Estado de México (UAEMéx), Toluca, México.,Laboratory of Molecular Biology and Cellular, UAEMéx, Toluca, México.,Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Division Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, Canada
| | - Francesco Copes
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Division Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, Canada
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Division Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, Canada
| | | | | | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering, Canada Research Chair Tier I for the Innovation in Surgery, Department of Min-Met-Materials Engineering & Division Regenerative Medicine, CHU de Quebec Research Center, Laval University, Quebec, Canada
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21
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Preparation of printable double-network hydrogels with rapid self-healing and high elasticity based on hyaluronic acid for controlled drug release. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.121994] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Cho IS, Ooya T. Tuned cell attachments by double-network hydrogels consisting of glycol chitosan, carboxylmethyl cellulose and agar bearing robust and self-healing properties. Int J Biol Macromol 2019; 134:262-268. [DOI: 10.1016/j.ijbiomac.2019.05.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 04/18/2019] [Accepted: 05/08/2019] [Indexed: 11/29/2022]
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23
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Xv J, Li H, Zhang W, Lai G, Xue H, Zhao J, Tu M, Zeng R. Anti-biofouling and functionalizable bioinspired chitosan-based hydrogel coating via surface photo-immobilization. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:398-414. [PMID: 30688155 DOI: 10.1080/09205063.2019.1570435] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Zwitterionic polymer is a new generation of anti-fouling materials with its good resistance to protein and bacterial adhesion. Constructing the anti-fouling surfaces with zwitterionic polymer has been regarded as an effective approach for improving the biocompatibility and biofunctionality of clinic devices. Herein, we reported a facile approach to construct a biodegradable anti-biofouling and functionalizable hydrogel coating via photo-immobilization using commercial polyethylene terephthalate (PET) films as the substrate, based on zwitterionic glycidyl methacrylate-phosphorylcholine-chitosan (PCCs-GMA). The surface structure and physicochemical properties of zwitterionic PCCs-GMA hydrogel coating were investigated by X-ray photoelectron spectroscopy (XPS), atomic force microscope (AFM) and static water contact angle measurement, and its functionalizable sites were detected by fluorescence labeling. Compared with the pristine PET and cationic chitosan - GMA and hydroxypropyltrimethyl ammonium chloride chitosan (HTCC) - GMA hydrogel coatings, zwitterionic PCCs-GMA hydrogel coating exhibited excellent biocompatibility, and significantly reduced protein adsorption for three model proteins of fibrinogen, immunoglobulin and lysozyme, repelled platelet adhesion, as well as showed a high resistance to bacterial attachment of Escherichia coli and Staphylococcus aureus and superior anti-fouling properties to MRC-5 cells. The results indicated that photo-immobilized zwitterionic PCCs-GMA hydrogel coating has perspective as a dual functional platform with integrated antifouling and further biofunctional properties for various biomedical applications.
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Affiliation(s)
- Jiesheng Xv
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Haoying Li
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Wenrui Zhang
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Guichao Lai
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Haoyu Xue
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Jianhao Zhao
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Mei Tu
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
| | - Rong Zeng
- a Department of Materials Science and Engineering College of Chemistry and Materials , Jinan University , Guangzhou , P. R. China
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24
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Ma X, Liu S, Tang H, Yang R, Chi B, Ye Z. In situ photocrosslinked hyaluronic acid and poly (γ-glutamic acid) hydrogels as injectable drug carriers for load-bearing tissue application. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:2252-2266. [PMID: 30311855 DOI: 10.1080/09205063.2018.1535820] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Due to the syringeability of precursor solution and convenience of open surgical treatment, injectable hydrogels have gained growing attention in drug delivery application. For load-bearing tissue, the excellent mechanical property is an important requirement for delivery vehicles to resist external stress and loads. Herein, we prepared mechanically robust injectable hydrogels (HA/γ-PGA hydrogels for short) using methacrylate-functionalized hyaluronic acid and poly (γ-glutamic acid) via photopolymerization. The HA/γ-PGA hydrogels showed outstanding anti-compression ability and could suffer a more than 80% strain. Meanwhile, after 5 cycles of compression, HA/γ-PGA hydrogels could still recover quickly against external stress, showing excellent shape recovery capability. Moreover, the mechanical properties could be modulated easily by changing the molar ratio of HA to γ-PGA. The drug release behavior was also evaluated and the drug-loaded HA/γ-PGA hydrogels showed a weak burst release and sustained release behavior. Additionally, HA/γ-PGA hydrogels also exhibited superior biocompatibility. Therefore, HA/γ-PGA hydrogels have great potential as injectable drug carriers for load-bearing tissue application.
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Affiliation(s)
- Xuebin Ma
- a School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing , China
| | - Shuai Liu
- a School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing , China
| | - Hejun Tang
- b State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing , China
| | - Rong Yang
- b State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing , China
| | - Bo Chi
- b State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing , China
| | - Zhiwen Ye
- a School of Chemical Engineering , Nanjing University of Science and Technology , Nanjing , China
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25
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Dang Q, Li CG, Jin XX, Zhao YJ, Wang X. Heparin as a molecular spacer immobilized on microspheres to improve blood compatibility in hemoperfusion. Carbohydr Polym 2018; 205:89-97. [PMID: 30446153 DOI: 10.1016/j.carbpol.2018.08.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 08/05/2018] [Accepted: 08/15/2018] [Indexed: 10/28/2022]
Abstract
Heparin, a highly sulfated linear polysaccharide, with anticoagulation function and blood compatibility is widely used as a biomaterials in medical application, but the most importance of heparin is its structure function as the macromolecular space arm. In this study, heparin as a spacer was covalently immobilized on the chloromethylated polystyrene microspheres (Ps) and then connected with l-phenylalanine forming the Ps-Hep-Phe structure, which was developed for endotoxin adsorption in hemoperfusion. The grafting density of heparin reach the maximum when the initial concentration of heparin solution was 5 mg/mL. The adsorbents with the heparin as a spacer showed the prolonged clotting times, low protein adsorption, and reduced the hemolysis rate, indicating that heparin-modified adsorbents have great blood compatibility. The adsorption capacity of Ps-Hep-Phe for endotoxin was 25.15 EU/g in dynamic adsorption, higher than that of Ps. Therefore, this study imply that heparin would be promising for modification of adsorbents in hemoperfusion.
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Affiliation(s)
- Qi Dang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China
| | - Chun-Gong Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China
| | - Xin-Xin Jin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China
| | - Ya-Jin Zhao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China
| | - Xiang Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, PR China.
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26
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Chitosan-based hydrogels: Preparation, properties and applications. Int J Biol Macromol 2018; 115:194-220. [DOI: 10.1016/j.ijbiomac.2018.04.034] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/18/2018] [Accepted: 04/08/2018] [Indexed: 12/18/2022]
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27
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Zhu L, Bratlie KM. pH sensitive methacrylated chitosan hydrogels with tunable physical and chemical properties. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2017.12.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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28
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Monier M, Youssef I, Abdel-Latif D. Synthesis of photo-responsive chitosan-cinnamate for efficient entrapment of β-galactosidase enzyme. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.01.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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Monier M, Abdel-Latif D, Youssef I. Preparation of ruthenium (III) ion-imprinted beads based on 2-pyridylthiourea modified chitosan. J Colloid Interface Sci 2018; 513:266-278. [DOI: 10.1016/j.jcis.2017.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 10/30/2017] [Accepted: 11/02/2017] [Indexed: 10/18/2022]
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30
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Chanphai P, Tajmir-Riahi H. Probing the binding of resveratrol, genistein and curcumin with chitosan nanoparticles. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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31
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Fabrication of photo-active trans -3-(4-pyridyl)acrylic acid modified chitosan. Carbohydr Polym 2017; 172:1-10. [DOI: 10.1016/j.carbpol.2017.04.072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/26/2017] [Accepted: 04/24/2017] [Indexed: 12/24/2022]
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32
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33
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Chanphai P, Tajmir-Riahi H. Encapsulation of testosterone by chitosan nanoparticles. Int J Biol Macromol 2017; 98:535-541. [DOI: 10.1016/j.ijbiomac.2017.02.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 01/22/2017] [Accepted: 02/01/2017] [Indexed: 02/06/2023]
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