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Wang S, Guan C, Wang P, Wang D, Wang H, Yip RCS, Chen H. A thiolated oxidized guar gum and sodium lginate dual-network microspheres with enhanced gastric acid resistance and mucoadhesion for delivery of probiotics. Int J Biol Macromol 2024:133395. [PMID: 38945718 DOI: 10.1016/j.ijbiomac.2024.133395] [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: 04/03/2024] [Revised: 06/19/2024] [Accepted: 06/22/2024] [Indexed: 07/02/2024]
Abstract
Probiotics offer numerous beneficial functions for human bodies, while the low survival rate under gastric acid and short retention time in the intestine are the major obstacles to their utilization. To address these issues, we designed a novel dual-network hydrogel microsphere that combines gastric acid resistance with enhanced mucoadhesion, aiming for the targeted delivery of probiotics. Thiolated oxidized guar gum (SOGG) was disulfide-linked to form the first network, and sodium alginate (SA) was cross-linked with Ca2+ to form the second network. Under the protection of the interpenetrating dual network microspheres, a much higher viability of Lactobacillus rhamnosus (LGG) (8.73 log CFU/mL) was achieved in simulated gastric fluid, compared to the zero-survival rate of free LGG. Mucoadhesion tests showed that the adhesion rate of SOGG/SA microspheres to the intestinal mucosa was 1.75 times higher than that of thiol-free microspheres. In vivo studies revealed that LGG-loaded microspheres significantly enhanced intestinal barrier function, remodeled the gut microbiome, and alleviated DSS-induced colitis in mice. Overall, SOGG/SA microspheres provide an effective strategy to the challenges of probiotic reduction in the stomach and rapid expulsion from the intestines, enhancing their health benefits.
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Affiliation(s)
- Shuxin Wang
- Marine college, Shandong University, NO.180 Wenhua West Road, Gao Strict, Weihai 264209, China
| | - Chenxia Guan
- Marine college, Shandong University, NO.180 Wenhua West Road, Gao Strict, Weihai 264209, China
| | - Pu Wang
- Marine college, Shandong University, NO.180 Wenhua West Road, Gao Strict, Weihai 264209, China
| | - Donghui Wang
- Marine college, Shandong University, NO.180 Wenhua West Road, Gao Strict, Weihai 264209, China
| | - Hanqi Wang
- Marine college, Shandong University, NO.180 Wenhua West Road, Gao Strict, Weihai 264209, China
| | - Ryan Chak Sang Yip
- Department of Cell and Systems Biology, University of Toronto, 25 Harbord St, Toronto, ON M5S 3G5, Canada
| | - Hao Chen
- Marine college, Shandong University, NO.180 Wenhua West Road, Gao Strict, Weihai 264209, China.
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Shen YC, Wang DM, Yang XT, Wang ZF, Wen MZ, Han YF, Zheng LZ, Di RY, Jiang CY, Wang JB, You JX, Zhang LM, Su LX, Fan XD. Novel radiopaque ethanol injection: physicochemical properties, animal experiments, and clinical application in vascular malformations. Mil Med Res 2024; 11:39. [PMID: 38902798 PMCID: PMC11188249 DOI: 10.1186/s40779-024-00542-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 06/02/2024] [Indexed: 06/22/2024] Open
Abstract
BACKGROUND Despite the efficacy of absolute ethanol (EtOH), its radiolucency introduces several risks in interventional therapy for treating vascular malformations. This study aims to develop a novel radiopaque ethanol injection (REI) to address this issue. METHODS Iopromide is mixed with ethanol to achieve radiopacity and improve the physicochemical properties of the solution. Overall, 82 male New Zealand white rabbits are selected for in vivo radiopacity testing, peripheral vein sclerosis [animals were divided into the following 5 groups (n = 6): negative control (NC, saline, 0.250 ml/kg), positive control (EtOH, 0.250 ml/kg), low-dose REI (L-D REI, 0.125 ml/kg), moderate-dose REI (M-D REI, 0.250 ml/kg), and high-dose REI (H-D REI 0.375 ml/kg)], pharmacokinetic analyses (the blood sample was harvested before injection, 5 min, 10 min, 20 min, 40 min, 1 h, 2 h, 4 h, and 8 h after injection in peripheral vein sclerosis experiment), peripheral artery embolization [animals were divided into the following 5 groups (n = 3): NC (saline, 0.250 ml/kg), positive control (EtOH, 0.250 ml/kg), L-D REI (0.125 ml/kg), M-D REI (0.250 ml/kg), and H-D REI (0.375 ml/kg)], kidney transcatheter arterial embolization [animals were divided into the following 4 groups (n = 3): positive control (EtOH, 0.250 ml/kg), L-D REI (0.125 ml/kg), M-D REI (0.250 ml/kg), and H-D REI (0.375 ml/kg); each healthy kidney was injected with saline as negative control], and biosafety evaluations [animals were divided into the following 5 groups (n = 3): NC (0.250 ml/kg), high-dose EtOH (0.375 ml/kg), L-D REI (0.125 ml/kg), M-D REI (0.250 ml/kg), and H-D REI (0.375 ml/kg)]. Then, a prospective cohort study involving 6 patients with peripheral venous malformations (VMs) is performed to explore the clinical safety and effectiveness of REI. From Jun 1, 2023 to August 31, 2023, 6 patients [age: (33.3 ± 17.2) years] with lingual VMs received sclerotherapy of REI and 2-month follow-up. Adverse events and serious adverse events were evaluated, whereas the efficacy of REI was determined by both the traceability of the REI under DSA throughout the entire injection and the therapeutic effect 2 months after a single injection. RESULTS The REI contains 81.4% ethanol (v/v) and 111.3 mg/ml iodine, which can be traced throughout the injection in the animals and patients. The REI also exerts a similar effect as EtOH on peripheral venous sclerosis, peripheral arterial embolization, and renal embolization. Furthermore, the REI can be metabolized at a similar rate compared to EtOH and Ultravist® and did not cause injury to the animals' heart, liver, spleen, lungs, kidneys and brain. No REI-related adverse effects have occurred during sclerotherapy of VMs, and 4/6 patients (66.7%) have achieved complete response at follow-up. CONCLUSION In conclusion, REI is safe, exerts therapeutic effects, and compensates for the radiolucency of EtOH in treating VMs. TRIAL REGISTRATION The clinical trial was registered as No. ChiCTR2300071751 on May 24 2023.
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Affiliation(s)
- Yu-Chen Shen
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - De-Ming Wang
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Xi-Tao Yang
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Zhen-Feng Wang
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Ming-Zhe Wen
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yi-Feng Han
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Lian-Zhou Zheng
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Ruo-Yu Di
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Chun-Yu Jiang
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Jing-Bing Wang
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Jian-Xiong You
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Li-Ming Zhang
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Li-Xin Su
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Xin-Dong Fan
- Vascular Anomaly Center, Department of Interventional Therapy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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Gao F, Rafiq M, Cong H, Yu B, Shen Y. Current research status and development prospects of embolic microspheres containing biological macromolecules and others. Int J Biol Macromol 2024; 267:131494. [PMID: 38608974 DOI: 10.1016/j.ijbiomac.2024.131494] [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: 12/21/2023] [Revised: 03/27/2024] [Accepted: 04/08/2024] [Indexed: 04/14/2024]
Abstract
Transcatheter arterial embolization (TACE) has been used in the treatment of malignant tumors, sudden hemorrhage, uterine fibroids, and other diseases, and with advances in imaging techniques and devices, materials science, and drug release technology, more and more embolic agents that are drug-carrying, self-imaging, or have multiple functions are being developed. Microspheres provide safer and more effective therapeutic results as embolic agents, with their unique spherical appearance and good embolic properties. Embolic microspheres are the key to arterial embolization, blocking blood flow and nutrient supply to the tumor target. This review summarizes some of the currently published embolic microspheres, classifies embolic microspheres according to matrix, and summarizes the characteristics of the microsphere materials, the current status of research, directions, and the value of existing and potential applications. It provides a direction to promote the development of embolic microspheres towards multifunctionalization, and provides a reference to promote the research and application of embolic microspheres in the treatment of tumors.
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Affiliation(s)
- Fengyuan Gao
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Muhammad Rafiq
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China; School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China.
| | - Youqing Shen
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China; Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bionanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
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Leng F, Lei S, Luo B, Lv S, Huang L, Jiang X. Size-tunable and biodegradable thrombin-functionalized carboxymethyl chitin microspheres for endovascular embolization. Carbohydr Polym 2022; 286:119274. [DOI: 10.1016/j.carbpol.2022.119274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 12/12/2022]
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Lu D, Chen M, Yu L, Chen Z, Guo H, Zhang Y, Han Z, Xu T, Wang H, Zhou X, Zhou Z, Teng G. Smart-Polypeptide-Coated Mesoporous Fe 3O 4 Nanoparticles: Non-Interventional Target-Embolization/Thermal Ablation and Multimodal Imaging Combination Theranostics for Solid Tumors. NANO LETTERS 2021; 21:10267-10278. [PMID: 34878286 DOI: 10.1021/acs.nanolett.1c03340] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Tumor theranostics hold great potential for personalized medicine in the future, and transcatheter arterial embolization (TAE) is an important clinical treatment for unresectable or hypervascular tumors. In order to break the limitation, simplify the procedure of TAE, and achieve ideal combinatorial theranostic capability, here, a kind of triblock-polypeptide-coated perfluoropentane-loaded mesoporous Fe3O4 nanocomposites (PFP-m-Fe3O4@PGTTCs) were prepared for non-interventional target-embolization, magnetic hyperthermia, and multimodal imaging combination theranostics of solid tumors. The results of systematic animal experiments by H22-tumor-bearing mice and VX2-tumor-bearing rabbits in vivo indicated that PFP-m-Fe3O4@PGTTC-6.3 has specific tumor accumulation and embolization effects. The tumors' growth has been inhibited and the tumors disappeared 4 weeks and ≤15 days post-injection with embolization and magnetic hyperthermia combination therapy, respectively. The results also showed an excellent effect of magnetic resonance/ultrasound/SPECT multimodal imaging. This pH-responsive non-interventional embolization combinatorial theranostics system provides a novel embolization and multifunctional theranostic candidate for solid tumors.
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Affiliation(s)
- Dedai Lu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Mingshu Chen
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Lili Yu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Zhengpeng Chen
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Hongyun Guo
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou, 730050, China
| | - Yongdong Zhang
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou, 730050, China
| | - Zhiming Han
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Tingting Xu
- Zhongda Hospital Southeast University, Jiangsu Key Laboratory of Molecular Imaging and Function Imaging, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Haijun Wang
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Xing Zhou
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Zubang Zhou
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Gaojun Teng
- Zhongda Hospital Southeast University, Jiangsu Key Laboratory of Molecular Imaging and Function Imaging, School of Medicine, Southeast University, Nanjing, 210009, China
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Li X, Lei Z, Sheng J, Song Y. Preparation and properties of caffeic-chitosan grafting fish bone collagen peptide. J BIOACT COMPAT POL 2021. [DOI: 10.1177/08839115211046417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, a novel peptide grafted chitosan (CACS-FBP) with high peptide content, excellent moisture-absorption and moisture-retention abilities was prepared. Caffeic acid (CA) was used to modify chitosan, the highly water-soluble intermediate further reacted with fish bone collagen peptide to obtain the final product, and the synthesis of CACS-FBP was confirmed by the Fourier transform infrared spectroscopy (FT-IR), NMR, and UV-vis. The single-factor experiments indicated that the degree of substitution (DS) of CACS-FBP depended on the reaction temperature, reaction time, the mass ratio of fish bone collagen peptide to CACS (mFBP/mCACS) and the mass ratio of MTGase to CACS (mMTGase/mCACS). In addition, the antioxidant assay indicated that CACS-FBP had an excellent antioxidant capacity, and the CACS-FBP showed no cytotoxicity toward L929 mouse fibroblasts, all the results mean that the prepared peptide-containing chitosan derivative has potential application in pharmaceutical and biomedical fields.
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Affiliation(s)
- Xuqin Li
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, P.R. China
| | - Zhou Lei
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, P.R. China
| | - Jie Sheng
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, P.R. China
| | - Yishan Song
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, P.R. China
- National R&D Branch Center for Freshwater Aquatic Products Processing Technology (Shanghai), Shanghai, P.R. China
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Tien ND, Lyngstadaas SP, Mano JF, Blaker JJ, Haugen HJ. Recent Developments in Chitosan-Based Micro/Nanofibers for Sustainable Food Packaging, Smart Textiles, Cosmeceuticals, and Biomedical Applications. Molecules 2021; 26:2683. [PMID: 34063713 PMCID: PMC8125268 DOI: 10.3390/molecules26092683] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/27/2021] [Accepted: 05/01/2021] [Indexed: 02/07/2023] Open
Abstract
Chitosan has many useful intrinsic properties (e.g., non-toxicity, antibacterial properties, and biodegradability) and can be processed into high-surface-area nanofiber constructs for a broad range of sustainable research and commercial applications. These nanofibers can be further functionalized with bioactive agents. In the food industry, for example, edible films can be formed from chitosan-based composite fibers filled with nanoparticles, exhibiting excellent antioxidant and antimicrobial properties for a variety of products. Processing 'pure' chitosan into nanofibers can be challenging due to its cationic nature and high crystallinity; therefore, chitosan is often modified or blended with other materials to improve its processability and tailor its performance to specific needs. Chitosan can be blended with a variety of natural and synthetic polymers and processed into fibers while maintaining many of its intrinsic properties that are important for textile, cosmeceutical, and biomedical applications. The abundance of amine groups in the chemical structure of chitosan allows for facile modification (e.g., into soluble derivatives) and the binding of negatively charged domains. In particular, high-surface-area chitosan nanofibers are effective in binding negatively charged biomolecules. Recent developments of chitosan-based nanofibers with biological activities for various applications in biomedical, food packaging, and textiles are discussed herein.
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Affiliation(s)
- Nguyen D. Tien
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway; (N.D.T.); (S.P.L.)
| | - Ståle Petter Lyngstadaas
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway; (N.D.T.); (S.P.L.)
| | - João F. Mano
- CICECO–Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Jonathan James Blaker
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway; (N.D.T.); (S.P.L.)
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, UK
| | - Håvard J. Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway; (N.D.T.); (S.P.L.)
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Li X, Ji X, Chen K, Yuan X, Lei Z, Ullah MW, Xiao J, Yang G. Preparation and evaluation of ion-exchange porous polyvinyl alcohol microspheres as a potential drug delivery embolization system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111889. [PMID: 33579501 DOI: 10.1016/j.msec.2021.111889] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 01/07/2021] [Accepted: 01/10/2021] [Indexed: 01/27/2023]
Abstract
The present study aimed to develop a new drug delivery system with efficient drug loading and sustained drug release for potential application in transarterial chemoembolization (TACE). The porous polyvinyl alcohol microspheres (PPVA MS) were prepared by a combination of inverse emulsification and thermal-induced phase separation (TIPS) method, this was followed by the grafting polymerization of sodium 4-styrene sulfonate (SSS) onto the PPVA MS to obtain the grafted PPVA-g-PSSS MS. The prepared PPVA MS showed a well-defined spherical shape with 'honeycomb-like' porous structure, which could be readily tailored by adjusting the quenching temperature. In vitro biocompatibility analysis indicated the non-cytotoxic and hemocompatible nature of PPVA MS. The porous structure and presence of ionically charged groups in the PPVA-g-PSSS MS favoured the loading of cationic doxorubicin (DOX) onto the MS through ionic-interactions and demonstrated a sustained drug release pattern. Moreover, the cytotoxicity of DOX-loaded PPVA-g-PSSS (DOX@PPVA-g-PSSS) MS against HepG2 cells and the intracellular uptake of DOX demonstrated the potent in vitro antitumor activity. Furthermore, the central auricular artery embolization in rabbits showed that both the PPVA-g-PSSS and DOX@PPVA-g-PSSS MS could occlude the auricular arteries and induced superior embolization effects, such as progressive ear appearance changes, irreversible parenchymal damage and fibrosis, and ultrastructural alternations in endothelial cells. Besides, the DOX fluorescence was distributed around the embolized arteries, without decreasing its intensity when prolonged embolization up to 15 days. These findings suggest that the newly developed DOX@PPVA-g-PSSS MS could be employed as a promising drug-loaded embolic agent for the treatment of hepatocellular carcinoma.
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Affiliation(s)
- Xiaohong Li
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiongfa Ji
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Kun Chen
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xi Yuan
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zehua Lei
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Muhammad Wajid Ullah
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jun Xiao
- Department of Orthopaedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
| | - Guang Yang
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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Lu D, Wang J, Li Y, Zhang Y, Yu L, Xu T, Guo H, Zhang Y, Wang X, Wang X, Teng G, Lei Z. Tumor Noninvasive and Target Embolization Therapy Platform by Intravenous Injection Based on Acidic Microenvironment-Responsive Hyperbranched Poly(amino acid)s. ACS CENTRAL SCIENCE 2020; 6:1977-1986. [PMID: 33274275 PMCID: PMC7706070 DOI: 10.1021/acscentsci.0c00506] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Indexed: 05/05/2023]
Abstract
Transcatheter arterial embolization (TAE) has been widely applied in treatments of unresectable or hypervascular tumors, but the procedure of TAE is complicated possibly brings inherent risks. Here, inspired by pH-responsive drug delivery systems, a new method of noninvasive and target embolization therapy by intravenous injection was developed. This method is based on a type of acidic microenvironment-responsive hyperbranched poly(amino acid) (HPTTG) to avoid using catheterization and real-time image guidance angiography, simplifying the procedure, elevating compliance and general applicability of embolization therapy. The pH value of the sol-to-gel phase transition with decreasing pH of HPTTG was controlled by adjusting the ratio of acidic amino acids in copolymers. The results of the tumor-bearing animal experiment indicate that the HPTTG have an excellent target and embolic ability; they accumulate the most at the tumor site in 8 h postinjection. Blood vessels of the tumors were occluded, and the tumors were inhibited and necrotized in about 20 days. Therefore, it is expected that HPTTG not only can be used as novel embolic materials for efficient noninvasive embolization therapy of many solid tumors but also can be used as a multifunctional platform for combined theranostics, for example, combination with controlled release, thermal ablation, multimodal imaging, synergistic therapy, etc.
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Affiliation(s)
- Dedai Lu
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Jiachen Wang
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yunfei Li
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yongyong Zhang
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Lili Yu
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Tingting Xu
- Jiangsu
Key Laboratory of Molecular Imaging and Function Imaging, Department
of Radiology, Zhongda Hospital Southeast
University, School of Medicine, Southeast University, Nanjing 210009, China
| | - Hongyun Guo
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Yongdong Zhang
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Xingdong Wang
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Xiaoqi Wang
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Gaojun Teng
- Jiangsu
Key Laboratory of Molecular Imaging and Function Imaging, Department
of Radiology, Zhongda Hospital Southeast
University, School of Medicine, Southeast University, Nanjing 210009, China
| | - Ziqiang Lei
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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Lang X, Wang T, Sun M, Chen X, Liu Y. Advances and applications of chitosan-based nanomaterials as oral delivery carriers: A review. Int J Biol Macromol 2020; 154:433-445. [DOI: 10.1016/j.ijbiomac.2020.03.148] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 12/11/2022]
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11
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Chen G, Wei R, Huang X, Wang F, Chen Z. Synthesis and assessment of sodium alginate-modified silk fibroin microspheres as potential hepatic arterial embolization agent. Int J Biol Macromol 2020; 155:1450-1459. [DOI: 10.1016/j.ijbiomac.2019.11.122] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/04/2019] [Accepted: 11/13/2019] [Indexed: 02/07/2023]
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12
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Yin J, Xu L. Batch preparation of electrospun polycaprolactone/chitosan/aloe vera blended nanofiber membranes for novel wound dressing. Int J Biol Macromol 2020; 160:352-363. [PMID: 32470578 DOI: 10.1016/j.ijbiomac.2020.05.211] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 04/28/2020] [Accepted: 05/23/2020] [Indexed: 12/23/2022]
Abstract
At present, more and more attention has been paid to the development of active wound dressings. Chitosan, a kind of carbohydrate polymer with good biocompatibility, is widely used in the field of wound dressings. In this study, a slopeing free surface electrospinning (SFSE) device was presented to prepare large quantities of polycaprolactone/chitosan/aloe vera (PCL/CS/AV) nanofiber membranes (NFMs) for antibacterial wound dressing. And the morphologies of PCL/CS/AV NFMs with varying weight ratios of PCL:CS:AV were studied using SEM, and the optimal weight ratio of 5:3:2 was determined for better wound dressings. Then the structure, wetting property and yield of the PCL/CS/AV NFMs with the optimal weight ratio were investigated, and the effects of the addition of AV on the antibacterial performance and the biocompatibility of NFMs was studied. In addition, the preparation mechanism of SFSE was researched by simulating the electric field distribution using Maxwell 3D due to the important role of the electric field in the SFSE process. The simulation analyses of electric fields agreed with the experimental data. The results illustrated SFSE could prepare high quality PCL/CS/AV NFMs in batches, and its yield of PCL/CS/AV NFMs was 10 times more than the single-needle ES, and the fabricated NFMs showed excellent antibacterial performance and biocompatibility, which made them suitable for wound dressings.
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Affiliation(s)
- Jing Yin
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China
| | - Lan Xu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, China.
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13
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Zhao Y, Li J, Leng F, Lv S, Huang W, Sun W, Jiang X. Degradable porous carboxymethyl chitin hemostatic microspheres. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:1369-1384. [DOI: 10.1080/09205063.2020.1760461] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Yong Zhao
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P. R. China
| | - Jiazhen Li
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P. R. China
| | - Fan Leng
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P. R. China
| | - Siyao Lv
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P. R. China
| | - Wei Huang
- Research and Development Center, Hangzhou Singclean Medical Products Co., Ltd, Hangzhou, P. R. China
| | - Weiqing Sun
- Research and Development Center, Hangzhou Singclean Medical Products Co., Ltd, Hangzhou, P. R. China
| | - Xulin Jiang
- Key Laboratory of Biomedical Polymers of the Ministry of Education & Department of Chemistry, Wuhan University, Wuhan, P. R. China
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14
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Pinto RV, Gomes PS, Fernandes MH, Costa ME, Almeida MM. Glutaraldehyde-crosslinking chitosan scaffolds reinforced with calcium phosphate spray-dried granules for bone tissue applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 109:110557. [DOI: 10.1016/j.msec.2019.110557] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 12/14/2022]
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15
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Preparation and in vitro/in vivo evaluation of doxorubicin-loaded poly[lactic-co-glycol acid] microspheres using electrospray method for sustained drug delivery and potential intratumoral injection. Colloids Surf B Biointerfaces 2020; 190:110937. [PMID: 32155454 DOI: 10.1016/j.colsurfb.2020.110937] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/10/2020] [Accepted: 03/02/2020] [Indexed: 01/12/2023]
Abstract
For cancer treatment, intratumoral drug injection has many limitations and not commonly adopted. The poly[lactic-co-glycolic acid] (PLGA) has emerged as a promising vehicle to enhance the in vitro/in vivo characteristic of various drugs. We prepared doxorubicin-PLGA microspheres (DOX-PLGA MSs) using the electrospray method. An in vitro elution method was employed to evaluate the release of DOX from the MSs. We performed an in vivo study on rats, in which we directly injected DOX-PLGA MSs into the liver. We measured liver and plasma DOX concentrations to assess local retention and systemic exposure. The mean diameter of the MSs was 6.74 ± 1.01 μm. The in vitro DOX release from the MSs exhibited a 12.3 % burst release on day 1, and 85.8 % of the drug had been released after 30 days. The in vivo tests revealed a higher local drug concentration at the target lobe of the liver than at the adjacent median lobe. In the first week, the DOX concentration in the peripheral blood of the MS group was lower than that of the direct DOX injection group. Based on the measured intrahepatic concentration and plasma pharmacokinetic profiles, DOX-PLGA MSs could be suitable vectors of chemotoxic agents for intratumoral injection.
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16
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In vitro and in vivo evaluation of 3D biodegradable thermo/pH sensitive sol-gel reversible hydroxybutyl chitosan hydrogel. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110419. [DOI: 10.1016/j.msec.2019.110419] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 09/21/2019] [Accepted: 11/10/2019] [Indexed: 11/18/2022]
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17
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Li X, Ji X, Chen K, Ullah MW, Yuan X, Lei Z, Cao J, Xiao J, Yang G. Development of finasteride/PHBV@polyvinyl alcohol/chitosan reservoir-type microspheres as a potential embolic agent: from in vitro evaluation to animal study. Biomater Sci 2020; 8:2797-2813. [PMID: 32080688 DOI: 10.1039/c9bm01775e] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Benign prostatic hyperplasia (BPH) is a prevalent urological disease affecting elders. Currently, the prostatic artery embolization (PAE) is considered as a minimally invasive and safe technique to treat BPH. However, various drug-loaded embolic agents have not been thoroughly investigated in BPH therapy. In this study, finasteride/poly(3-hydroxybutyrate-3-hydroxyvalerate)@polyvinyl alcohol/chitosan (FNS/PHBV@PVA/CS) reservoir-type microspheres were prepared via the solid-in-water-in-oil (S/W/O) emulsion crosslinking method with the aim to reduce the burst effect and control localized drug delivery. The structure and properties of the drug and resultant microspheres were characterized via field emission scanning electron microscopy (FESEM), Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The results showed that the drug-loaded hybrid microspheres were well-dispersed and spherical with a mean diameter of 238.1 ± 27.3 μm. All samples exhibited excellent thermal stability. The FNS/PHBV microspheres were successfully encapsulated inside the PVA/CS polymeric matrix, which effectively suppressed the burst effect and prolonged the drug release up to 51 days. In vitro biocompatibility assessment indicated that the microspheres possessed excellent cytocompatibility and hemocompatibility. Furthermore, in vivo studies performed in the rabbit ear embolization model showed the formation of progressive ischemic necrosis after treatment for various periods. Histopathological studies revealed that the microspheres completely occluded the blood vessels with minimal foreign body response and formed the fibrotic area at the periphery of embolized arteries. Furthermore, the auricular vascular endothelial cells showed acute ultrastructural changes, associated with the ischemic necrosis induced by the embolization procedures. All these findings suggest that the FNS/PHBV@PVA/CS hybrid microspheres could be used as a promising drug delivery system for potential applications in BPH therapy.
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Affiliation(s)
- Xiaohong Li
- Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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18
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Fang X, Shen A. Preparation and evaluation of phytantriol liquid crystal as a liquid embolic agent. Pharm Dev Technol 2020; 25:610-616. [PMID: 32008407 DOI: 10.1080/10837450.2020.1725046] [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: 10/25/2022]
Abstract
Transcatheter arterial chemoembolization (TACE) is the preferred treatment for patients with advanced hepatocellular carcinoma (HCC), but it lacks safe and effective embolic agents. 5-Fluorouracil (5-FU) is a broad-spectrum anticancer drug, but its clinical application is limited due to drug resistance and toxic side effects. Therefore, in this study, we developed a new liquid embolic agent with 5-FU as the model drug. We found that this liquid embolic agent possesses good gelling properties and embolic effects. An in vitro drug release model of the agent conformed to the Weibull model. Cumulative release of the drug over 7 d was ∼90%, consisting of an initial burst followed by sustained release. Cytotoxicity testing showed that each liquid embolic composition is cytocompatible and only mildly cytotoxic. Pharmacokinetic experiments showed that the formulation significantly prolongs the t1/2 of 5-FU (approximately five times that of 5-FU solution) and 5-FU residence time in the body (approximately three times that of 5-FU solution). These results indicate that the liquid embolic agent has embolic capacity and could be used as a potential therapeutic method for TACE.
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Affiliation(s)
- Xiaolin Fang
- Department of Pharmacy, The First Affiliated Hospital of USTC, Hefei, China
| | - Aizong Shen
- Department of Pharmacy, The First Affiliated Hospital of USTC, Hefei, China
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19
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Development of double porous poly (ε - caprolactone)/chitosan polymer as tissue engineering scaffold. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110257. [DOI: 10.1016/j.msec.2019.110257] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 12/24/2022]
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20
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Biomimetic TiO 2-chitosan/sodium alginate blended nanocomposite scaffolds for tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110710. [PMID: 32204022 DOI: 10.1016/j.msec.2020.110710] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 01/03/2023]
Abstract
The study is aimed to synthesize potent metal oxide based biomimetic nanocomposites to overcome the risk associated with artificial bone tissue engineering. High purity TiO2 nanoparticles are synthesized via hydrothermal route. A biomimetic nanocomposite scaffolds containing chitosan-sodium alginate (4: 4) blended with three different (0.5, 1, and 1.5 wt%) concentrations of hydrothermally synthesized TiO2 nanoparticles are obtained by solvent casting technique. The physico-chemical and thermal degradation properties of as-synthesized TiO2 nanoparticles and their nanocomposite scaffolds are analyzed. In-vitro cytotoxicity and biocompatibility of the prepared TiO2 nanoparticles and nanocomposites are tested against human bladder tumor (UC6) and osteosarcoma (MG-63) cell lines. Antibacterial property is tested against Escherichia coli and Staphylococcus aureus. These studies reveal that TiO2 nanoparticles and polymeric nanocomposites contain good physico-chemical and mechanical properties for enhanced in-vitro biocompatibility suitable for biomedical applications. Biomimetically prepared chitosan-sodium alginate scaffold containing TiO2 nanoparticles (1 wt%) is found to exhibit superior biocompatibility for bone tissue engineering applications.
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21
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Ying R, Wang H, Sun R, Chen K. Preparation and properties of a highly dispersed nano-hydroxyapatite colloid used as a reinforcing filler for chitosan. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110689. [PMID: 32204004 DOI: 10.1016/j.msec.2020.110689] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/16/2020] [Accepted: 01/21/2020] [Indexed: 12/13/2022]
Abstract
Hydroxyapatite/chitosan (HAp/CS) composites have been widely studied and applied in tissue engineering fields due to their excellent biocompatibility and degradability. However, to improve the mechanical properties of CS, cross-linking agents are commonly added, which will seriously affect its biocompatibility and safety. In this study, the homogenously dispersed nano-hydroxyapatite (nHAp) colloidal solution was first synthesized using a co-precipitation method. The three-dimensional porous nano-hydroxyapatite/chitosan (nHAp/CS) composite scaffolds with different nHAp contents were then obtained through an environmentally friendly freeze-drying process without any cross-linking. The microstructure, porosity, phase composition, swelling ratio, mechanical properties, and biocompatibility of the nHAp/CS scaffolds were thoroughly investigated. The as-prepared nHAp/CS scaffolds exhibited a high porosity and excellent swelling performance. Compared with pure CS scaffolds, the nHAp/CS composite scaffolds not only showed higher compressive modulus but also exhibited better biocompatibility. This study provides a simple and environmentally friendly technique to construct three-dimensional porous nHAp/CS composite scaffolds, which demonstrate promising potential by being a scaffold material for bone tissue engineering.
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Affiliation(s)
- Ruilian Ying
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, PR China
| | - Huachun Wang
- Qilu Hospital of Shandong University (Qingdao), Qingdao 266035, PR China
| | - Ruixue Sun
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, PR China.
| | - Kezheng Chen
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, PR China
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22
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Chitosan/gellan gum ratio content into blends modulates the scaffolding capacity of hydrogels on bone mesenchymal stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 106:110258. [DOI: 10.1016/j.msec.2019.110258] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 09/22/2019] [Accepted: 09/25/2019] [Indexed: 12/14/2022]
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23
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Jahromi HK, Farzin A, Hasanzadeh E, Barough SE, Mahmoodi N, Najafabadi MRH, Farahani MS, Mansoori K, Shirian S, Ai J. Enhanced sciatic nerve regeneration by poly-L-lactic acid/multi-wall carbon nanotube neural guidance conduit containing Schwann cells and curcumin encapsulated chitosan nanoparticles in rat. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 109:110564. [PMID: 32228906 DOI: 10.1016/j.msec.2019.110564] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 11/30/2019] [Accepted: 12/14/2019] [Indexed: 01/10/2023]
Abstract
The main aim of this study was to improve the efficacy of peripheral nerve regeneration by an artificial neural guidance conduit (NGC) as a carrier to transplant allogeneic Schwann cells (SCs) and curcumin encapsulated chitosan nanoparticles (nanocurcumin). The conduit was prepared by poly-L-lactic acid (PLLA) and surface-modified multi-wall carbon nanotubes (mMWCNT) and filled with SCs and nanocurcumin. SCs play an important role in the regeneration of injured peripheral nerve and controlled curcumin release can decrease SCs apoptosis, and enhance the regeneration and functional recovery of injured peripheral nerves. The mechanical properties, contact angle, and cell biocompatibility experiments showed that the optimized concentration of mMWCNT inside PLLA wall of conduits was 0.15 wt%. The drug release experiments showed slower release of curcumin from nanocurcumin samples compared to nanocurcumin encapsulated inside NGC wrapped fibrin gel sample. It was found that simultaneous using of both SCs and curcumin inside NGC had a significant role in sciatic nerve regeneration in vivo. Histological examination revealed a significant increase in the number of axons in injured sciatic nerve following treatment by SCs and nanocurcumin compared to negative control group. Histological evaluation also revealed a significant decrease in the number of vessels in fibrin groups compared to positive control group. The results showed that there was no significant difference between the reaction time and sciatic functional index (SFI) values of rats with injured sciatic nerve treated by NGC/SCs/nanocurcumin sample and autograft sample. In conclusion, our results strongly showed that PLLA/mMWCNT nanofibrous conduit filled with fibrin gel containing SCs and nanocurcumin is a proper strategy for improving nerve regeneration after a nerve transaction in the rat.
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Affiliation(s)
- Hossein Kargar Jahromi
- Zoonoses Research Center, Jahrom University of Medical Sciences, Jahrom, Iran; Research Center for Noncommunicable Diseases, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Ali Farzin
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Hasanzadeh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Tehran, Iran
| | - Somayeh Ebrahimi Barough
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Tehran, Iran
| | - Narges Mahmoodi
- Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza H Najafabadi
- Department of Medical Nanotechnology, School of Advanced Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Morteza Sagharjoghi Farahani
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Korosh Mansoori
- Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sadegh Shirian
- Department of Pathology, School of Veterinary Medicine, Sharekord University, Shahrekord, Iran
| | - Jafar Ai
- Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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24
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Intestine-targeted delivery potency of O-carboxymethyl chitosan–coated layer-by-layer microcapsules: An in vitro and in vivo evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110129. [DOI: 10.1016/j.msec.2019.110129] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 08/18/2019] [Accepted: 08/23/2019] [Indexed: 01/22/2023]
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25
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Li J, Wu X, Shi Q, Li C, Chen X. Effects of hydroxybutyl chitosan on improving immunocompetence and antibacterial activities. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110086. [DOI: 10.1016/j.msec.2019.110086] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 08/14/2019] [Accepted: 08/14/2019] [Indexed: 01/31/2023]
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26
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Hu J, Albadawi H, Oklu R, Chong BW, Deipolyi AR, Sheth RA, Khademhosseini A. Advances in Biomaterials and Technologies for Vascular Embolization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901071. [PMID: 31168915 PMCID: PMC7014563 DOI: 10.1002/adma.201901071] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/24/2019] [Indexed: 05/03/2023]
Abstract
Minimally invasive transcatheter embolization is a common nonsurgical procedure in interventional radiology used for the deliberate occlusion of blood vessels for the treatment of diseased or injured vasculature. A wide variety of embolic agents including metallic coils, calibrated microspheres, and liquids are available for clinical practice. Additionally, advances in biomaterials, such as shape-memory foams, biodegradable polymers, and in situ gelling solutions have led to the development of novel preclinical embolic agents. The aim here is to provide a comprehensive overview of current and emerging technologies in endovascular embolization with respect to devices, materials, mechanisms, and design guidelines. Limitations and challenges in embolic materials are also discussed to promote advancement in the field.
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Affiliation(s)
- Jingjie Hu
- Division of Vascular & Interventional Radiology, Minimally Invasive Therapeutics Laboratory, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Hassan Albadawi
- Division of Vascular & Interventional Radiology, Minimally Invasive Therapeutics Laboratory, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Rahmi Oklu
- Division of Vascular & Interventional Radiology, Minimally Invasive Therapeutics Laboratory, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Brian W Chong
- Departments of Radiology and Neurological Surgery, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Amy R. Deipolyi
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical Center, 1275 York Avenue, New York, New York 10065, USA
| | - Rahul A. Sheth
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Ali Khademhosseini
- Department of Bioengineering, Department of Radiological Sciences, Department of Chemical and Biomolecular Engineering, Center for Minimally Invasive Therapeutics, California Nanosystems Institute, University of California, 410 Westwood Plaza, Los Angeles, California 90095, USA
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27
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Liao F, Peng XY, Yang F, Ke QF, Zhu ZH, Guo YP. Gadolinium-doped mesoporous calcium silicate/chitosan scaffolds enhanced bone regeneration ability. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109999. [PMID: 31499945 DOI: 10.1016/j.msec.2019.109999] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 07/14/2019] [Accepted: 07/18/2019] [Indexed: 12/13/2022]
Abstract
Chitosan (CTS) and mesoporous calcium silicate (MCS) have been developed for bone defect healing; however, their bone regeneration capacity still does not satisfy the patients with bone diseases. Gadolinium (Gd) is accumulated in human bones, and plays a beneficial role in regulating cell performance and bone regeneration. We firstly constructed Gd-doped MCS/CTS (Gd-MCS/CTS) scaffolds by a lyophilization technology. The interconnected arrangement of CTS films lead to forming macropores by using ice crystals as templates during the lyophilization procedure, and the Gd-MCS nanoparticles dispersed uniformly on the macropore walls. The biocompatible chemical components and hierarchical pores facilitated the attachment and spreading of rat bone marrow-derived mesenchymal stem cells (rBMSCs). Interestingly, the Gd dopants in the scaffolds effectively activated the Wnt/β-catenin signaling pathway, resulting in excellent cell proliferation and osteogenic differentiation capacities. The osteogenic-related genes such as alkaline phosphatase (ALP), runt-related transcription factor 2 (Runx2) and collagen type1 (COL-1) were remarkably up-regulated by Gd-MCS scaffolds as compared with MCS scaffolds, and their expression levels increased in a positive correlation with Gd doping amounts. Moreover, in vivo rat cranial defect tests further confirmed that Gd-MCS/CTS scaffolds significantly stimulated collagen deposition and new bone formation. The exciting finding suggested the beneficial effects of Gd3+ ions on osteogenic differentiation and new bone regeneration, and Gd-MCS/CTS scaffolds can be employed as a novel platform for bone defect healing.
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Affiliation(s)
- Fang Liao
- The Education Ministry Key Lab of Resource Chemistry, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Xiao-Yuan Peng
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Fan Yang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Qin-Fei Ke
- The Education Ministry Key Lab of Resource Chemistry, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Zhen-Hong Zhu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China.
| | - Ya-Ping Guo
- The Education Ministry Key Lab of Resource Chemistry, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
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28
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Design of a biodegradable UV-irradiated gelatin-chitosan/nanocomposed membrane with osteogenic ability for application in bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:875-886. [DOI: 10.1016/j.msec.2019.01.135] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 01/09/2019] [Accepted: 01/31/2019] [Indexed: 12/27/2022]
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29
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Socrates R, Prymak O, Loza K, Sakthivel N, Rajaram A, Epple M, Narayana Kalkura S. Biomimetic fabrication of mineralized composite films of nanosilver loaded native fibrillar collagen and chitosan. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:357-366. [DOI: 10.1016/j.msec.2019.01.101] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 01/17/2019] [Accepted: 01/22/2019] [Indexed: 12/11/2022]
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30
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Zhou X, Esworthy T, Lee SJ, Miao S, Cui H, Plesiniak M, Fenniri H, Webster T, Rao RD, Zhang LG. 3D Printed scaffolds with hierarchical biomimetic structure for osteochondral regeneration. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 19:58-70. [PMID: 31004813 DOI: 10.1016/j.nano.2019.04.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/24/2019] [Accepted: 04/03/2019] [Indexed: 12/25/2022]
Abstract
Osteochondral defects resulting from trauma and/or pathologic disorders are critical clinical problems. The current approaches still do not yield satisfactory due to insufficient donor sources and potential immunological rejection of implanted tissues. 3D printing technology has shown great promise for fabricating customizable, biomimetic tissue matrices. The purpose of the present study is to investigate 3D printed scaffolds with biomimetic, biphasic structure for osteochondral regeneration. For this purpose, nano-hydroxyapatite and transforming growth factor beta 1 nanoparticles were synthesized and distributed separately into the lower and upper layers of the biphasic scaffold, which was fabricated using 3D stereolithography printer. Our results showed that this scaffold design successfully promoted osteogenic and chondrogenic differentiation of human bone marrow mesenchymal stem cells, as well as enhanced gene expression associated with both osteogenesis and chondrogenesis alike. The finding demonstrated that 3D printed osteochondral scaffolds with biomimetic, biphasic structure are excellent candidates for osteochondral repair and regeneration.
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Affiliation(s)
- Xuan Zhou
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Timothy Esworthy
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Se-Jun Lee
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Shida Miao
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Haitao Cui
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA
| | - Michael Plesiniak
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA; Department of Biomedical Engineering, The George Washington University, Washington, DC, USA
| | - Hicham Fenniri
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Thomas Webster
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Raj D Rao
- Department of Orthopedic Surgery, The George Washington University, Washington, DC, USA
| | - Lijie Grace Zhang
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC, USA; Department of Biomedical Engineering, The George Washington University, Washington, DC, USA; Department of Electrical and Computer Engineering, The George Washington University, Washington, DC, USA; Department of Medicine, The George Washington University, Washington, DC, USA.
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Michailidou G, Christodoulou E, Nanaki S, Barmpalexis P, Karavas E, Vergkizi-Nikolakaki S, Bikiaris DN. Super-hydrophilic and high strength polymeric foam dressings of modified chitosan blends for topical wound delivery of chloramphenicol. Carbohydr Polym 2018; 208:1-13. [PMID: 30658779 DOI: 10.1016/j.carbpol.2018.12.050] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/12/2018] [Accepted: 12/17/2018] [Indexed: 11/25/2022]
Abstract
In the present study polymer blends based on chitosan (CS) and its derivatives with trans-aconitic (t-Acon) acid and another with trimellitic (TRM) anhydride, were prepared for topical wound delivery of chloramphenicol (CHL). FT-IR spectroscopy revealed the successful grafting of t-Acon acid or TRM anhydride into CS macromolecules at molar ratios 1:1 and 1:0.5, while powder X-ray diffraction (XRD) analysis showed that the prepared materials were amorphous. Neat chitosan and its grafted derivatives were mixed in different ratios (25/75, 50/50 and 75/25 w/w) in order to prepare suitable blends. Scanning electron microscopy (SEM) showed that the formed blends after freeze-drying had a sponge-like structure, while thermogravimetric analysis (TGA) verified their thermal stability. All blends are miscible in studied compositions and have extensive swelling and much better mechanical properties than neat CS. In a further step, the obtained porous sponges prepared from CS/CS-derivatives 50/50 w/w were loaded with Chloramphenicol (10, 20 and 30 wt%), a broad-spectrum antibiotic, and the prepared dressings were evaluated in terms of FT-IR, XRD, SEM, and in vitro drug dissolution. An initial burst release followed by a quasi-Fickian diffusion driven sustained release phase was observed while the addition of chloramphenicol gives high antimicrobial properties to all dressings.
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Affiliation(s)
- Georgia Michailidou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Evi Christodoulou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stavroula Nanaki
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Panagiotis Barmpalexis
- Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | - Evangelos Karavas
- Pharmathen S.A., Pharmaceutical Industry, Dervenakion Str 6, Pallini Attikis, GR-15351 Attiki, Greece
| | - Susan Vergkizi-Nikolakaki
- Department of Microbiology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Krishnan RA, Pant T, Sankaranarayan S, Stenberg J, Jain R, Dandekar P. Protective nature of low molecular weight chitosan in a chitosan–Amphotericin B nanocomplex – A physicochemical study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:472-482. [DOI: 10.1016/j.msec.2018.08.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 07/06/2018] [Accepted: 08/04/2018] [Indexed: 11/15/2022]
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Gorgieva S, Vuherer T, Kokol V. Autofluorescence-aided assessment of integration and μ-structuring in chitosan/gelatin bilayer membranes with rapidly mineralized interface in relevance to guided tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:226-241. [DOI: 10.1016/j.msec.2018.07.077] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 07/24/2018] [Accepted: 07/27/2018] [Indexed: 01/31/2023]
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Sutar YB, Telvekar VN. Chitosan based copolymer-drug conjugate and its protein targeted polyelectrolyte complex nanoparticles to enhance the efficiency and specificity of low potency anticancer agent. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:393-406. [DOI: 10.1016/j.msec.2018.07.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 06/05/2018] [Accepted: 07/01/2018] [Indexed: 11/25/2022]
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Hernández-Rangel A, Silva-Bermudez P, España-Sánchez BL, Luna-Hernández E, Almaguer-Flores A, Ibarra C, Garcia-Perez VI, Velasquillo C, Luna-Barcenas G. Fabrication and in vitro behavior of dual-function chitosan/silver nanocomposites for potential wound dressing applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:750-765. [PMID: 30423761 DOI: 10.1016/j.msec.2018.10.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 08/07/2018] [Accepted: 10/02/2018] [Indexed: 12/14/2022]
Abstract
We report the synthesis and in vitro evaluation of dual-function chitosan-silver nanoparticles (CTS-AgNPs) films with potential applications as wound dressings. We attempted to formulate nanocomposite films with appropriate AgNPs concentrations to simultaneously display antibacterial activity and suitability for cell culture. Nanocomposites were obtained by CTS-mediated in situ chemical reduction of AgNO3. Circular-shape AgNPs (sizes ca. 7-50 nm) well distributed within the CTS matrices were obtained in concentrations from 0.018 to 0.573 wt%. Efficacy (bacteriostatic and bactericidal properties) of CTS-AgNPs films to decrease planktonic and biofilm bacterial growth was AgNPs concentration- and bacteria strain-dependent. Films showed significant antibacterial activity against Gram-negative E. coli and P. aeruginosa and Gram-positive S. aureus. Antibacterial activity against S. epidermidis was moderated. Films suitability for cell culture was characterized using primary human fibroblasts (HF). HF displayed cell viability higher than 90% and the characteristic fusiform morphology of adhered fibroblast upon culture on films with AgNPs concentration ≤ 0.036 wt%. HF cultured on these films also showed positive expression of tropoelastin, procollagen type I and Ki-67, characteristic proteins of extracellular matrix and proliferative cells, respectively. In vitro assays demonstrated that cytocompatibility/antibacterial properties decreased/increased as silver concentration increased, suggesting that CTS-AgNPS nanocomposite films with ≈0.04-0.20 wt% might be considered as potential temporary dual-function wound dressings.
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Affiliation(s)
- A Hernández-Rangel
- Departamento de Polímeros y Biopolímeros, CINVESTAV Unidad Querétaro, C.P. 73230 Querétaro, Mexico; Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, C.P. 14389 CDMX, Mexico
| | - P Silva-Bermudez
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, C.P. 14389 CDMX, Mexico
| | - B L España-Sánchez
- CONACYT-Centro de Investigación y Desarrollo Tecnológico en Electroquímica SC, Parque Tecnológico Querétaro S/N, Sanfandila, Pedro Escobedo Querétaro CP 76703, México
| | - E Luna-Hernández
- Departamento de Polímeros y Biopolímeros, CINVESTAV Unidad Querétaro, C.P. 73230 Querétaro, Mexico
| | - A Almaguer-Flores
- División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, C.P. 04510 CDMX, Mexico
| | - C Ibarra
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, C.P. 14389 CDMX, Mexico
| | - V I Garcia-Perez
- División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, C.P. 04510 CDMX, Mexico
| | - C Velasquillo
- Unidad de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, C.P. 14389 CDMX, Mexico.
| | - G Luna-Barcenas
- Departamento de Polímeros y Biopolímeros, CINVESTAV Unidad Querétaro, C.P. 73230 Querétaro, Mexico.
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The Evaluation of Proanthocyanidins/Chitosan/Lecithin Microspheres as Sustained Drug Delivery System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9073420. [PMID: 30140704 PMCID: PMC6081580 DOI: 10.1155/2018/9073420] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/03/2018] [Accepted: 06/12/2018] [Indexed: 12/23/2022]
Abstract
Proanthocyanidin (PC) has attracted wide attention on cosmetics and pharmaceutical due to its antioxidant, anticancer, antimicrobial, antiangiogenic, and anti-inflammatory activities. However, PC applications are limited because of its sensitivity to thermal treatment, light, and oxidation and the poor absorption in the gastrointestinal tract. Thus, a novel dosage form of PC needs to be designed to improve its stability and bioavailability for drug delivery. The objective of this study is to fabricate proanthocyanidins/chitosan/lecithin (PC/CTS/LEC) microspheres and investigate various characteristics. In the current study, PC/CTS/LEC microspheres were prepared by spray-drying technology. The yield (61.68%), encapsulation efficiency (68.19%), and drug loading capacity (17.05%) were found in the results. The scanning electron microscope demonstrated that the microspheres were spherical in shape with wrinkled surfaces. DSC study displayed that the microspheres stability was greatly improved when comparing with bare PC. The in vitro release study showed that the 76.92% of PC was released from microspheres within 48 h. The moisture contents of microspheres ranged from 8% to 13%. The swelling rate and tapped density of microspheres were elevated with increasing the concentration of chitosan in the formulations. The moisture uptake of microspheres was saturated at 40°C/RH75% within 12 h. Our results indicated that the stability of PC/CTS/LEC microspheres was enhanced, and it is a promising carrier for sustained drug delivery system.
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37
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Chitosan/gelatin as a new nano-carrier system for calcium hydroxide delivery in endodontic applications: Development, characterization and process optimization. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:540-546. [PMID: 30184780 DOI: 10.1016/j.msec.2018.07.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 06/11/2018] [Accepted: 07/01/2018] [Indexed: 11/21/2022]
Abstract
The main aim of this study is preparation, optimization and in vitro characterization of Chitosan/Gelatin nano-carriers (NCs) for calcium hydroxide (CH) to improve its therapeutic potential. The designed system can be used in the endodontic applications demanding a sustained release of calcium and hydroxyl ions. Modeling and optimization of CH loaded polymeric NCs were performed using response surface methodology (RSM) based on central composite surface statistical design. The effect of Chitosan concentration (0.1-1% w/v), Gelatin concentration (0.1-1% w/v) and CH concentration (0.05-0.4% w/v) on the particle size, polydispersity index (PDI), drug loading (DL) and encapsulation efficiency (EE) of CH loaded polymeric NCs were investigated. Optimized CH loaded polymeric NCs formulation which obtained using RSM showed spherical and smooth surface with a particle size of 292 nm, PDI of 0.32, DL of 88.8% and EE of 99%. Optimized formulation was evaluated for in vitro calcium ion release in phosphate buffer solution (PBS) at pH 7.4 for 14 days. The presence of hydrogen bonding and some intermolecular interactions between Chitosan/Gelatin polymeric materials were confirmed using Fourier transform infrared (FTIR) analysis. These interactions enable Chitosan/Gelatin NCs to load CH and maintain sustained release of Calcium ions from CH during experimental period.
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38
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Fabrication of nanofibrous microcarriers mimicking extracellular matrix for functional microtissue formation and cartilage regeneration. Biomaterials 2018; 171:118-132. [PMID: 29684676 DOI: 10.1016/j.biomaterials.2018.04.033] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/13/2018] [Accepted: 04/14/2018] [Indexed: 01/08/2023]
Abstract
Cartilage has rather limited capacities for self-repair and regeneration. To repair complexly shaped cartilage tissue defects, we propose the application of microtissues fabricated from bone marrow-derived mesenchymal stem cells (BMSCs) cultured in natural bionic nanofibrous microcarriers (NF-MCs). The NF-MCs were structurally and functionally designed to mimic natural extracellular matrix (ECM) by crosslinking dialdehyde bacterial cellulose (DBC) with DL-allo-hydroxylysine (DHYL) and complexing chitosan (CS) with DHYL through electrostatic interactions. The orthogonal design allows for fine tuning of fiber diameter, pore size, porosity, mechanical properties, and biodegradation rate of the NF-MC. BMSCs cultured in NF-MCs showed improved proliferation compared with those cultured in chitosan microcarriers (CS-MCs). After three-week culture under microgravity conditions, functional cartilage microtissues were generated. When implanted into a knee articular cartilage defect in mice, the microtissue showed superior in vivo cartilage repair as characterized by cell tracking, histology, micro CT image, and gait analysis. Versatile in natural biopolymer design and biomimetic in nanofibrous component embedded in macroporous microcarriers, these injectable NC-MCs demonstrate to be effective carriers for cell proliferation and differentiation. Furthermore, the functional microtissues also show their prospect in repair of cartilage tissue, and suggest their potential for other tissues in general.
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Hyaluronic acid-based nano-sized drug carrier-containing Gellan gum microspheres as potential multifunctional embolic agent. Sci Rep 2018; 8:731. [PMID: 29335649 PMCID: PMC5768792 DOI: 10.1038/s41598-018-19191-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 12/22/2017] [Indexed: 02/07/2023] Open
Abstract
The purpose of this study was to develop a gellan gum-based multifunctional embolic agent. Calibrated spherical gellan gum and nanoparticle-containing gellan gum microspheres were prepared via water-in oil emulsification method. Self-assembled nanoparticles composed of short-chain hyaluronic acid and polyethylenimine as the doxorubicin carrier were prepared. The short-chain hyaluronic acid/polyethylenimine/ doxorubicin (sHH/PH/Dox) with the mean size was 140 ± 8 nm. To examine sHH/PH/Dox nanoparticle uptake into cells, the results confirmed that sHH/PH nanoparticles as drug carrier can facilitate the transport of doxorubicin into HepG2 liver cancer cells. Subsequently, sHH/PH/Dox merged into the gellan gum (GG) microspheres forming GG/sHH/PH/Dox microsphere. After a drug release experiment lasting 45 days, the amount of released doxorubicin from 285, 388, and 481 μm GG/sHH/PH/Dox microspheres were approximately 4.8, 1.8 and 1.1-fold above the IC50 value of the HepG2 cell. GG/sHH/PH/Dox microspheres were performed in rabbit ear embolization model and ischemic necrosis on ear was visible due to the vascular after 8 days. Regarding the application of this device in the future, we aim to provide better embolization agents for transcatheter arterial chemoembolization (TACE).
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40
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Bösiger P, Richard IMT, Le Gat L, Michen B, Schubert M, Rossi RM, Fortunato G. Application of response surface methodology to tailor the surface chemistry of electrospun chitosan-poly(ethylene oxide) fibers. Carbohydr Polym 2018; 186:122-131. [PMID: 29455969 DOI: 10.1016/j.carbpol.2018.01.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 01/10/2018] [Accepted: 01/10/2018] [Indexed: 12/20/2022]
Abstract
Chitosan is a promising biocompatible polymer for regenerative engineering applications, but its processing remains challenging due to limited solubility and rigid crystalline structure. This work represents the development of electrospun chitosan/poly(ethylene oxide) blend nanofibrous membranes by means of a numerical analysis in order to identify and tailor the main influencing parameters with respect to accessible surface nitrogen functionalities which are of importance for the biological activity as well as for further functionalization. Depending on the solution composition, both gradient fibers and homogenous blended fiber structures could be obtained with surface nitrogen concentrations varying between 0 and 6.4%. Response surface methodology (RSM) revealed chitosan/poly(ethylene oxide) ratio and chitosan molecular weight as the main influencing factors with respect to accessible nitrogen surface atoms and respective concentrations. The model showed good adequacy hence providing a tool to tailor the surface properties of chitosan/poly(ethylene oxide) blends by addressing the amount of accessible chitosan.
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Affiliation(s)
- Peter Bösiger
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland; University of Freiburg, Faculty of Environment & Natural Resources, Chair of Forest Botany, Bertoldstrasse 17, DE-79085 Freiburg, Germany
| | - Isabelle M T Richard
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland; École européenne de Chimie, Polymères et Matériaux, Université de Strasbourg, 25 Rue Becquerel, FR-67087 Strasbourg, France
| | - Luce Le Gat
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland; CBMN (UMR 5248, CNRS), 3BIO's Team, University of Bordeaux, Allée Geoffroy Saint-Hilaire, 33600 Pessac, France
| | - Benjamin Michen
- Empa, Laboratory for Applied Wood Materials, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland; Wood Materials Science, Institute for Building Materials, ETH Zürich, Stefano-Franscini-Platz 3, 8093 Zürich, Switzerland
| | - Mark Schubert
- Empa, Laboratory for Applied Wood Materials, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - René M Rossi
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Giuseppino Fortunato
- Empa, Laboratory for Biomimetic Membranes and Textiles, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland.
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Drug-eluting embolic microspheres for local drug delivery - State of the art. J Control Release 2017; 262:127-138. [PMID: 28710006 DOI: 10.1016/j.jconrel.2017.07.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/07/2017] [Accepted: 07/10/2017] [Indexed: 12/19/2022]
Abstract
Embolic microspheres or beads used in transarterial chemoembolization are an established treatment method for hepatocellular carcinoma patients. The occlusion of the tumor-feeding vessels by intra-arterial injection of the beads results in tumor necrosis and shrinkage. In this short review, we describe the utility of using these beads as devices for local drug delivery. We review the latest advances in the development of non-biodegradable and biodegradable drug-eluting beads for transarterial chemoembolization. Their capability to load different drugs, such as chemotherapeutics and anti-angiogenic compounds with different physicochemical properties, like charge and hydrophilicity/hydrophobicity, are discussed. We specifically address controlled and sustained drug release from the microspheres, and the resulting in vivo pharmacokinetics in the plasma vs. drug distribution in the targeted tissue.
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42
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Vázquez JA, Noriega D, Ramos P, Valcarcel J, Novoa-Carballal R, Pastrana L, Reis RL, Pérez-Martín RI. Optimization of high purity chitin and chitosan production from Illex argentinus pens by a combination of enzymatic and chemical processes. Carbohydr Polym 2017; 174:262-272. [PMID: 28821067 DOI: 10.1016/j.carbpol.2017.06.070] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/13/2017] [Accepted: 06/19/2017] [Indexed: 02/07/2023]
Abstract
The present report illustrates the optimisation of the experimental conditions for the chemical and enzymatic production of chitin and chitosan from Illex argentinus pen by-products. Optima conditions for chitin isolation were established at 0.82M NaOH/36.4°C, 57.5°C/pH=9.29, 59.6°C/pH=9.30 and 49.6°C/pH=5.91 for chemical, alcalase, esperase and neutrase deproteinization, respectively. Chitin samples were subsequently deacetylated by alkaline treatment reaching the highest degrees of deacetylation (DD>93%) at 61.0-63.7% of NaOH and 14.9-16.4h of hydrolysis depending on the type of process previously performed to the squid pens. Molecular weight (as number average molecular weight, Mn) of chitosan produced in the experimental designs ranged from 143kDa (PDI 2.37) to 339kDa (PDI 2.38).
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Affiliation(s)
- José Antonio Vázquez
- Grupo de Reciclado y Valorización de Materiales Residuales (REVAL), Instituto de Investigacións Mariñas (IIM-CSIC), r/Eduardo Cabello, 6. Vigo, 36208 Galicia, Spain.
| | - Diana Noriega
- Departamento de Química Analítica y Alimentaria, Facultade de Ciencias de Ourense, Universidade de Vigo, Campus As Lagoas s/n, Ourense, Spain; Grupo de Bioquímica de Alimentos, Instituto de Investigacións Mariñas (IIM-CSIC), r/Eduardo Cabello, 6. Vigo, 36208 Galicia, Spain
| | - Patricia Ramos
- Grupo de Bioquímica de Alimentos, Instituto de Investigacións Mariñas (IIM-CSIC), r/Eduardo Cabello, 6. Vigo, 36208 Galicia, Spain
| | - Jesus Valcarcel
- Grupo de Reciclado y Valorización de Materiales Residuales (REVAL), Instituto de Investigacións Mariñas (IIM-CSIC), r/Eduardo Cabello, 6. Vigo, 36208 Galicia, Spain; Grupo de Bioquímica de Alimentos, Instituto de Investigacións Mariñas (IIM-CSIC), r/Eduardo Cabello, 6. Vigo, 36208 Galicia, Spain
| | - Ramon Novoa-Carballal
- 3B́s Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Lorenzo Pastrana
- International Iberian Nanotechnology Laboratory (INL), Avda. Mestre José Veiga s/n, 4715 Braga, Portugal
| | - Rui L Reis
- 3B́s Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Ricardo I Pérez-Martín
- Grupo de Bioquímica de Alimentos, Instituto de Investigacións Mariñas (IIM-CSIC), r/Eduardo Cabello, 6. Vigo, 36208 Galicia, Spain
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Li S, Xiao L, Deng H, Shi X, Cao Q. Remote controlled drug release from multi-functional Fe 3O 4/GO/Chitosan microspheres fabricated by an electrospray method. Colloids Surf B Biointerfaces 2016; 151:354-362. [PMID: 28043052 DOI: 10.1016/j.colsurfb.2016.12.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 12/16/2016] [Accepted: 12/19/2016] [Indexed: 12/30/2022]
Abstract
The construction of multifunctional microspheres for remote controlled drug release requires the exquisite selection of composite materials and preparation approaches. In this study, chitosan, an amino polysaccharide, was blended with inorganic nanocomponents, Fe3O4 and graphene oxide (GO) and electrosprayed to fabricate uniform microspheres with the diameters ranging from 100μm to 1100μm. An anti-cancer drug, doxorubicin (DOX), was loaded to the microspheres by an adsorption or embedding method. The microsphere is responsive to magnetic fields due to the presence of Fe3O4, and the incorporation of GO enhanced the drug loading capacity. The fast stimuli-responsive release of DOX can be facilely controlled by using NIR irradiation due to the strong photo-thermal conversion of Fe3O4 and GO. In addition, ultrasound was used as another external stimulus for DOX release. The results suggest the Fe3O4/GO/Chitosan microspheres fabricated by the electrospray method provide an efficient platform for remote controlled drug release, which may have potential applications in drug eluting microspheres.
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Affiliation(s)
- Sheng Li
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430072, PR China.
| | - Ling Xiao
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430072, PR China.
| | - Hongbing Deng
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430072, PR China.
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430072, PR China.
| | - Qihua Cao
- School of Resource and Environmental Science, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430072, PR China.
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Weng L, Tseng HJ, Rostamzadeh P, Golzarian J. In vitro comparative study of drug loading and delivery properties of bioresorbable microspheres and LC bead. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:174. [PMID: 27752972 DOI: 10.1007/s10856-016-5786-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
Drug loadable bioresorbable microspheres (BRMS) are specially designed for the treatment of hypervascular tumors through arterial embolization. These microspheres consist of carboxymethyl chitosan crosslinked with carboxymethyl cellulose, and are available at different size ranges varying from 50 to 900 µm in diameter. Similar to commercially available non-resorbable drug eluting microspheres, LC Bead® microspheres (LCB), BRMS were capable of loading more than 99 % of doxorubicin, an anticancer drug, from the solution within 2 h with highly similar kinetics (difference factor f 1 = 0.36; similarity factor f 2 = 97.99). Doxorubicin loaded BRMS exhibited the highest elution rate in the 30 % ethanol aqueous solution saturated with potassium chloride, and the elution time depended on the ratio between the amount of loaded BRMS and the volume of elution media. After injection through microcatheters, BRMS have a higher recovery rate of the microsphere weight than LCB (90.96 vs. 79.63 %, P = 0.026). Although loaded BRMS eluted more drug into the injection medium than loaded LCB (8.63 vs. 3.80 %, P = 0.0015), there was no significant difference in the drug delivery rate between BRMS and LCB (83.88 vs. 86.65 %, P = 0.504). This study compares the loading capability as well as the drug delivery rate of BRMS and a commercial product under a condition simulating a transcatheter arterial chemoembolization procedure and demonstrates the potential of drug loaded BRMS for the treatment of hypervascular tumors such as hepatocellular carcinoma.
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Affiliation(s)
- Lihui Weng
- Department of Radiology, University of Minnesota, 420 Delaware St SE, Minneapolis, MN, 55455, USA
| | - Hsiang-Jer Tseng
- Department of Radiology, University of Minnesota, 420 Delaware St SE, Minneapolis, MN, 55455, USA
| | - Parinaz Rostamzadeh
- Department of Radiology, University of Minnesota, 420 Delaware St SE, Minneapolis, MN, 55455, USA
| | - Jafar Golzarian
- Department of Radiology, University of Minnesota, 420 Delaware St SE, Minneapolis, MN, 55455, USA.
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Dang Q, Liu C, Wang Y, Yan J, Wan H, Fan B. Characterization and biocompatibility of injectable microspheres-loaded hydrogel for methotrexate delivery. Carbohydr Polym 2016; 136:516-26. [DOI: 10.1016/j.carbpol.2015.09.084] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 09/13/2015] [Accepted: 09/23/2015] [Indexed: 01/08/2023]
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46
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Bulut E. Controlled delivery of the popular nonsteroidal anti-inflammatory drug, paracetamol, from chitosan-g-polyacrylamide microspheres prepared by the emulsion crosslinking technique. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1482-90. [PMID: 25985724 DOI: 10.3109/21691401.2015.1042109] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In this paper, chitosan-graft-polyacrylamide (CS-g-PAAm) microspheres as drug delivery matrices of paracetamol were prepared by the emulsion crosslinking technique, using glutaraldehyde (GA) as a crosslinker. Graft copolymer of chitosan with acrylamide was synthesized using cerium (IV) ammonium nitrate (CAN). The microspheres formed had average particle sizes in the range of 78-252 μm. Paracetamol entrapment efficiency was found to vary between 31.89% and 72.61%, as determined by UV spectroscopy. Drug release in acidic and phosphate buffer solutions (pH 1.2 and 7.4) of the CS-g-PAAm microspheres was influenced by formulation factors such as the concentration of CS-g-PAAm, the paracetamol/polymer ratio (w/w), and the amount of crosslinker.
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Affiliation(s)
- Emine Bulut
- a Department of Chemistry , Science and Arts Faculty, Afyon Kocatepe University , Afyonkarahisar , Turkey
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Zhou X, Kong M, Cheng X, Li J, Li J, Chen X. Investigation of acetylated chitosan microspheres as potential chemoembolic agents. Colloids Surf B Biointerfaces 2014; 123:387-94. [PMID: 25311962 DOI: 10.1016/j.colsurfb.2014.07.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 07/21/2014] [Accepted: 07/27/2014] [Indexed: 11/27/2022]
Abstract
The aim was to investigate the potential of chitosan microspheres (CMs) with different acetylation using as a chemoembolic agent. Chitosan microspheres (CMs) were prepared via water-in-oil (W/O) emulsification cross-linking method, and acetylated chitosan microspheres (ACMs) were obtained by acetylation of CMs. Next, we characterized the morphology, size, composition and degrees of deacetylation using scanning electron microscopy (TEM), dynamic laser light scattering (DLS), and Fourier transform infrared spectrometer (FTIR). All microspheres had smooth surfaces and good mechanical flexibility, and all could pass through a 5F catheter. The swelling rate (SR) of CMs decreased significantly with the increase of pH (4.0-10.0) but ACMs did not change under the same conditions. Protein absorption assays suggested that albumin was more greatly adsorbed on CMs than on ACMs. Furthermore, CMs caused more blood clots than ACMs. ACMs caused hemolysis less than CMs (<5% of the time). Data indicated that ACMs had more hemocompatibility. Cytotoxicity tests indicated that ACMs initially had less cell attached proliferation but increased with incubation. In contrast, the relative growth rate of mouse embryo fibroblasts (MEFs) on CMs decreased gradually. The results suggested that ACMs could stimulate the growth of MEFs, and CMs were not cytotoxic to MEFs. Thus, ACMs were more biocompatible with greater potential to be used as chemoembolic material.
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Affiliation(s)
- Xuan Zhou
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China; Key Laboratory for Nano-Bio Interface Research, Suzhou Key Laboratory for Nanotheranostics, Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.
| | - Ming Kong
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China
| | - Xiaojie Cheng
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China
| | - Jingjing Li
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China; College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100022, China
| | - Jing Li
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China
| | - Xiguang Chen
- College of Marine Life Science, Ocean University of China, Qingdao 266003, China.
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