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Yu S, Shi J, Liu Y, Si J, Yuan Y, Liu C. A mechanically robust and flexible PEGylated poly(glycerol sebacate)/β-TCP nanoparticle composite membrane for guided bone regeneration. J Mater Chem B 2019. [DOI: 10.1039/c9tb00417c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A PEGS/β-TCP composite membrane was fabricated by a simple prepolymer mixing-in situ crosslinking method for guided bone regeneration.
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Affiliation(s)
- Shuang Yu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- School of Materials Science and Engineering
| | - Jun Shi
- Department of Oral and Craniomaxillofacial Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
- P. R. China
| | - Yutong Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- School of Materials Science and Engineering
| | - Jiawen Si
- Department of Oral and Craniomaxillofacial Surgery
- Shanghai Ninth People's Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
- P. R. China
| | - Yuan Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- School of Materials Science and Engineering
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- School of Materials Science and Engineering
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102
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Zhang H, Cheng C, Song H, Bai L, Cheng Y, Ba X, Wu Y. A facile one-step grafting of polyphosphonium onto halloysite nanotubes initiated by Ce(iv). Chem Commun (Camb) 2019; 55:1040-1043. [DOI: 10.1039/c8cc08667b] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polyphosphonium was facilely grafted onto HNTs in an aqueous phase by a one-step method initiated by Ce(iv) at a mild temperature.
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Affiliation(s)
- Hailei Zhang
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Cong Cheng
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Hongzan Song
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Libin Bai
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
| | - Yongqiang Cheng
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education
| | - Xinwu Ba
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
- Affiliated Hospital of Hebei University
| | - Yonggang Wu
- College of Chemistry and Environmental Science
- Hebei University
- Baoding
- P. R. China
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103
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Satish S, Tharmavaram M, Rawtani D. Halloysite nanotubes as a nature's boon for biomedical applications. Nanobiomedicine (Rij) 2019; 6:1849543519863625. [PMID: 31320940 PMCID: PMC6628522 DOI: 10.1177/1849543519863625] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 06/22/2019] [Indexed: 12/13/2022] Open
Abstract
The arena of biomedical science has long been in quest of innovative mediums for diagnostic and therapeutic applications. The latest being the use of nanomaterials for such applications, thereby giving rise to the branch of nanomedicine. Halloysite nanotubes (HNTs) are naturally occurring tubular clay nanomaterials, made of aluminosilicate kaolin sheets rolled several times. The aluminol and siloxane groups on the surface of HNT facilitate the formation of hydrogen bonding with the biomaterials onto its surface. These properties render HNT pivotal in diverse range of applications, such as in environmental sciences, waste-water treatment, dye removal, nanoelectronics and fabrication of nanocomposites, catalytic studies, as glass coatings or anticorrosive coatings, in cosmetics, as flame retardants, stimuli response, and forensic sciences. The specific properties of HNT also lead to numerous applications in biomedicine and nanomedicine, namely drug delivery, gene delivery, tissue engineering, cancer and stem cells isolation, and bioimaging. In this review, recent developments in the use of HNT for various nanomedicinal applications have been discussed.
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Affiliation(s)
- Swathi Satish
- Institute of Research & Development, Gujarat Forensic
Sciences University, Gandhinagar, Gujarat, India
| | - Maithri Tharmavaram
- Institute of Research & Development, Gujarat Forensic
Sciences University, Gandhinagar, Gujarat, India
| | - Deepak Rawtani
- Institute of Research & Development, Gujarat Forensic
Sciences University, Gandhinagar, Gujarat, India
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104
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Jiang Y, Deng Y, Tu Y, Ay B, Sun X, Li Y, Wang X, Chen X, Zhang L. Chitosan-based asymmetric topological membranes with cell-like features for healthcare applications. J Mater Chem B 2019; 7:2634-2642. [PMID: 32254996 DOI: 10.1039/c8tb03296c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chitosan-based guided tissue regeneration (GTR) membranes are extensively used in orthopedic/stomatological regenerative medicine since chitosan shares many chemical and structural similarities with glycosaminoglycans (GAGs) in the extracellular matrix.
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Affiliation(s)
- Yulin Jiang
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
| | - Yi Deng
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
| | - Ying Tu
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
| | - Birol Ay
- Institute of Biomaterials and Biomedical Engineering
- University of Toronto
- Toronto
- Canada
| | - Xiaodong Sun
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
| | - Yubao Li
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
| | - Xiaohong Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea
- Hainan University
- Haikou 570228
- China
| | - Xianchun Chen
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
| | - Li Zhang
- Analytical and Testing Center
- Research Center for Nano-biomaterials
- School of Chemical Engineering
- West China School of Preclinical and Forensic Medicine, & School of Materials Science & Engineering
- Sichuan University
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105
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Enhanced drug delivery, mechanical properties and antimicrobial activities in poly(lactic acid) nanofiber with mesoporous Fe3O4-COOH nanoparticles. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.09.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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106
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Tharmavaram M, Pandey G, Rawtani D. Surface modified halloysite nanotubes: A flexible interface for biological, environmental and catalytic applications. Adv Colloid Interface Sci 2018; 261:82-101. [PMID: 30243667 DOI: 10.1016/j.cis.2018.09.001] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 09/01/2018] [Accepted: 09/02/2018] [Indexed: 02/07/2023]
Abstract
Halloysite Nanotubes (HNTs) are clay minerals that possess unique chemical composition and a tubular structure due to which, they have recently emerged as a potential nanomaterial for umpteen applications. Over the years, the myriad applications of HNT have been realized through the surface modification of HNT, which involves the modification of nanotube's inner lumen and the outer surface with different functional compounds. The presence of aluminum and silica groups on the inner and outer surface of HNT enhance the interfacial relationship of the nanotube with different functional agents. Compounds such as alkalis, organosilanes, polymers, compounds of biological origin, surfactants and nanomaterials have been used for the modification of the inner lumen and the outer surface of HNT. The strategies change the constitution of HNT's surface either through micro-disintegration of the surface or by introducing additional functional groups on the surface, which further enhances their potential to be used as a flexible interface for different applications. In this review, the different surface modification strategies of the outer surface and the inner lumen that have been employed over the years have been discussed. The biological, environmental and catalytic applications of these surface modified HNTs with such versatile interface in the past two years have been elaborately discussed as well.
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Affiliation(s)
- Maithri Tharmavaram
- Institute of Research & Development, Gujarat Forensic Sciences University, Sector 9, Near Police Bhawan, Gandhinagar, Gujarat, India
| | - Gaurav Pandey
- Institute of Research & Development, Gujarat Forensic Sciences University, Sector 9, Near Police Bhawan, Gandhinagar, Gujarat, India
| | - Deepak Rawtani
- Institute of Research & Development, Gujarat Forensic Sciences University, Sector 9, Near Police Bhawan, Gandhinagar, Gujarat, India.
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107
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De Silva RT, Dissanayake RK, Mantilaka MMMGPG, Wijesinghe WPSL, Kaleel SS, Premachandra TN, Weerasinghe L, Amaratunga GAJ, de Silva KMN. Drug-Loaded Halloysite Nanotube-Reinforced Electrospun Alginate-Based Nanofibrous Scaffolds with Sustained Antimicrobial Protection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33913-33922. [PMID: 30220194 DOI: 10.1021/acsami.8b11013] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Halloysite nanotube (HNT)-reinforced alginate-based nanofibrous scaffolds were successfully fabricated by electrospinning to mimic the natural extracellular matrix (ECM) structure which is beneficial for tissue regeneration. An antiseptic drug, cephalexin (CEF)-loaded HNT, was incorporated into the alginate-based matrix to obtain sustained antimicrobial protection and robust mechanical properties, the key criteria for tissue engineering applications. Electron microscopic imaging and drug release studies revealed that CEF had penetrated into the lumen space of the HNT and also deposited on the outer walls, with a total loading capacity of 30 wt %. Moreover, the diameter of alginate-based nanofibers of the scaffolds ranged from 40 to 522 nm with well-aligned HNTs, resulting in superior mechanical properties. For instance, the addition of 5% (w/w) HNT improved the tensile strength (σ) and elastic modulus by 3-fold and 2-fold, respectively, compared to those of the alginate-based scaffolds without HNT. The fabricated scaffolds exhibited remarkable antimicrobial properties against both Gram-negative and Gram-positive bacteria, and the cytotoxicity studies confirmed the nontoxicity of the fabricated scaffolds. Drug release kinetics showed that CEF inside HNTs diffuses within 24 h and that the diffusion of the drug is delayed by 7 days once the CEF-loaded HNTs are incorporated into the alginate-based nanofibers. These fabricated alginate-based electrospun scaffolds with enhanced mechanical properties and sustained antimicrobial protection hold great potential to be used as artificial ECM scaffolds for tissue engineering applications.
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Affiliation(s)
- Rangika Thilan De Silva
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Ranga K Dissanayake
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | | | - W P Sanjeewa Lakmal Wijesinghe
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Shehan Shalinda Kaleel
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Thejani Nisansala Premachandra
- Department of Veterinary Pathobiology, Faculty of Veterinary Medicine , University of Peradeniya , Peradeniya 20400 , Sri Lanka
| | - Laksiri Weerasinghe
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
| | - Gehan A J Amaratunga
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
- Electrical Engineering Division, Department of Engineering , University of Cambridge , 9 J. J. Thomson Avenue , Cambridge CB3 0FA , U.K
| | - K M Nalin de Silva
- Sri Lanka Institute of Nanotechnology (SLINTEC) , Nanotechnology and Science Park , Mahenwatte, Pitipana, Homagama 10200 , Sri Lanka
- Department of Chemistry , University of Colombo , Colombo 00300 , Sri Lanka
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108
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Pavliňáková V, Fohlerová Z, Pavliňák D, Khunová V, Vojtová L. Effect of halloysite nanotube structure on physical, chemical, structural and biological properties of elastic polycaprolactone/gelatin nanofibers for wound healing applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:94-102. [DOI: 10.1016/j.msec.2018.05.033] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 02/02/2018] [Accepted: 05/08/2018] [Indexed: 10/16/2022]
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109
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Ji L, Gong M, Qiao W, Zhang W, Liu Q, Dunham RE, Gu J. A gelatin/PLA-b-PEG film of excellent gas barrier and mechanical properties. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1600-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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110
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111
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Huang Y, Shi R, Gong M, Zhang J, Li W, Song Q, Wu C, Tian W. Icariin-loaded electrospun PCL/gelatin sub-microfiber mat for preventing epidural adhesions after laminectomy. Int J Nanomedicine 2018; 13:4831-4844. [PMID: 30214191 PMCID: PMC6118333 DOI: 10.2147/ijn.s169427] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Epidural adhesion is one of the major reasons attributed to failed back surgery syndrome after a successful laminectomy, and results in serious clinical complications which require management from physicians. Therefore, there is an urgent demand within the field to develop biodegradable anti-adhesion membranes for the prevention of post-operative adhesion. METHODS In this study, icariin (ICA) was initially loaded into polycaprolactone (PCL)/gelatin fibers via electrospinning to fabricate nanofibrous membranes. The effects of the ICA content (0.5wt%, 2wt% and 5wt%) and the bioactivity of ICA in the nanofibrous membranes were investigated in vitro and in vivo. RESULTS The nanofibrous membranes showed suitable pore size and good properties that were unaffected by ICA concentration. Moreover, the ICA-loaded membranes exhibited an originally rapid and subsequently gradual sustained ICA release profile that could significantly prevent fibroblast adhesion and proliferation. In vivo studies with rabbit laminectomy models demonstrated that the ICA-loaded membranes effectively reduced epidural adhesion by gross observation, histology, and biochemical evaluation. The anti-adhesion mechanism of ICA was found to be via suppression of the TGF-β/Smad signaling proteins and down regulation of collage I/III and a-SMA expression for the first time. CONCLUSION We believe that these ICA-loaded PCL/gelatin electrospun membranes provide a novel and promising strategy to resist adhesion formation following laminectomy in a clinical application.
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Affiliation(s)
- Yuelong Huang
- Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing 100035, China,
| | - Rui Shi
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing 100035, China,
| | - Min Gong
- Beijing Laboratory of Biomedical Materials, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jingshuang Zhang
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing 100035, China,
| | - Weiyang Li
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing 100035, China,
| | - Qingpeng Song
- Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing 100035, China,
| | - Chengai Wu
- Institute of Traumatology and Orthopaedics, Beijing Laboratory of Biomedical Materials, Beijing Jishuitan Hospital, Beijing 100035, China,
| | - Wei Tian
- Department of Spine Surgery of Beijing Jishuitan Hospital, The Fourth Clinical Medical College of Peking University, Beijing 100035, China,
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112
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Halloysite clay nanotubes for life sciences applications: From drug encapsulation to bioscaffold. Adv Colloid Interface Sci 2018; 257:58-70. [PMID: 29887382 DOI: 10.1016/j.cis.2018.05.007] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 05/25/2018] [Indexed: 12/11/2022]
Abstract
Natural forming clay halloysite is an emerging nanomaterial carrier for sustained drug delivery. These 50 nm diameter aluminosilicate tubes, with inner - alumina and outer - silica surface layers, can be loaded with 10-30 wt% of drug molecules, DNA and enzymes. The opposite charge of the inner and outer halloysite surface allow for selective drug adsorption inside or outside the clay nanotubes. The drug loaded halloysite enhanced the zeta potential of minus 50-60 mV allowing for stable aqueous nanocolloids. Halloysite nanoformulations provide an extended 10-20 h release profile, and may be functionalized (e.g., clogging tubes' end with polymers extending release time to 1-2 weeks or allowing for triggered release), which renders these clay nanostructures as promising controlled delivery systems. Recent studies demonstrate the potential of abundantly available halloysite clay nanotubes for life science applications, from drug delivery via oral or topical administration, to tissue scaffolds and regenerative medicine, while assessing their cellular internalization, stability, biosafety and biocompatibility are featured. The benefits and limitations of halloysite clay nanotubes are discussed, as well as the directions for future developments.
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113
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Tiwari AP, Hwang TI, Oh JM, Maharjan B, Chun S, Kim BS, Joshi MK, Park CH, Kim CS. pH/NIR-Responsive Polypyrrole-Functionalized Fibrous Localized Drug-Delivery Platform for Synergistic Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20256-20270. [PMID: 29808986 DOI: 10.1021/acsami.7b17664] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Localized drug-delivery systems (LDDSs) are a promising approach for cancer treatment because they decrease systematic toxicity and enhance the therapeutic effect of the drugs via site-specific delivery of active compounds and possible gradual release. However, the development of LDDS with rationally controlled drug release and intelligent functionality holds great challenge. To this end, we have developed a tailorable fibrous site-specific drug-delivery platform functionalized with pH- and near-infrared (NIR)-responsive polypyrrole (PPy), with the aim of cancer treatment via a combination of photothermal ablation and chemotherapy. First, a paclitaxel (PTX)-loaded polycaprolactone (PCL) (PCL-PTX) mat was prepared by electrospinning and subsequently in situ membrane surface-functionalized with different concentrations of PPy. The obtained PPy-functionalized mats exhibited excellent photostability and heating property in response to NIR exposure. PPy-coated mats exhibited enhanced PTX release in a pH 5.5 environment compared to pH 7.4. Release was further accelerated in response to NIR under both conditions; however, superior release was observed at pH 5.5 compared to pH 7.4, indicating a dual stimuli-responsive (pH and NIR) drug-delivery platform. More importantly, the 808 nm NIR irradiation enabled markedly accelerated PTX release from PPy-coated PCL-PTX mats and slowed and sustained release following termination of laser irradiation, confirming representative stepwise drug-release properties. PPy-coated PCL-PTX mats presented significantly enhanced in vitro and in vivo anticancer efficacy under NIR irradiation compared to PPy-coated PCL-PTX mats not exposed to NIR or uncoated mats (PCL-PTX). This study has thus developed a promising fibrous site-specific drug-delivery platform with NIR- and pH-triggering that notably utilizes PPy as a dopant for synergistic photothermal chemotherapy.
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Affiliation(s)
| | | | | | | | | | | | - Mahesh Kumar Joshi
- Department of Chemistry, Tri-Chandra Multiple Campus , Tribhuvan University , Kathmandu 44605 , Nepal
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114
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Gong M, Chi C, Ye J, Liao M, Xie W, Wu C, Shi R, Zhang L. Icariin-loaded electrospun PCL/gelatin nanofiber membrane as potential artificial periosteum. Colloids Surf B Biointerfaces 2018; 170:201-209. [PMID: 29909312 DOI: 10.1016/j.colsurfb.2018.06.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/16/2018] [Accepted: 06/08/2018] [Indexed: 02/06/2023]
Abstract
Due to the significant role of the periosteum in bone regeneration, we hypothesised that using a specially engineered artificial periosteum could lead to an enhancement in osteogenesis in bone grafts. Herein, we describe our work aimed at fabricating an electrospun fibrous membrane as an artificial periosteum that exhibits flexibility, permeability and osteoinduction. This membrane was designed to cover the complex surface of bone grafts to facilitate and accelerate bone regeneration. The traditional Chinese medicine icariin (ICA) was subsequently introduced into poly (ε-caprolactone) (PCL) /gelatin nanofibers to fabricate an artificial periosteum for the first time. The effects of ICA content on morphology, physical properties, drug release profile, in vitro degradability, biocompatibility and osteogenic differentiation properties were investigated. The ICA-loaded electrospun membranes showed significant improvement in hydrophilicity, high mechanical strength, appropriate degradation rates and excellent biocompatibility. Furthermore, clear enhancement in alkaline phosphatase (ALP) activity, as well as an increase in osteocalcin (OCN) and type collagen I (COL I) expression in MC3T3-E1 cells were detected. Furthermore, we observed clear calcium deposition content in MC3T3-E1 cells cultured on ICA-loaded fibrous matrix. The membrane loaded with 0.05 wt.% ICA displayed properties contributing to cell attachment, proliferation and differentiation. These results indicate the huge potential of this ICA-loaded PCL/gelatin electrospun membrane as a biomimetic artificial periosteum to accelerate bone regeneration.
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Affiliation(s)
- Min Gong
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Cheng Chi
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jingjing Ye
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Meihong Liao
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Wenqi Xie
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Chengai Wu
- Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing 100035, PR China
| | - Rui Shi
- Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing 100035, PR China.
| | - Liqun Zhang
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China.
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115
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Massaro M, Cavallaro G, Colletti CG, Lazzara G, Milioto S, Noto R, Riela S. Chemical modification of halloysite nanotubes for controlled loading and release. J Mater Chem B 2018; 6:3415-3433. [PMID: 32254440 DOI: 10.1039/c8tb00543e] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Clay minerals have been used for medical purposes from ancient times. Among them, the halloysite nanotube, an aluminosilicate of the kaolin group, is an emerging nanomaterial which possesses peculiar chemical characteristics. By means of suitable modifications, such as supramolecular functionalization or covalent modifications, it is possible to obtain novel nanomaterials with tunable properties for several applications. In this context the covalent grafting of suitable organic moieties on the external surface or in the halloysite lumen has been exploited to improve the loading and release of several biologically active molecules. The resulting hybrid nanomaterials have been applied as drug carrier and delivery systems, as fillers for hydrogels, in tissue regeneration and in the gene delivery field. Furthermore the loading and release of specific molecules have been also investigated for environmental purposes. This review summarizes the main developments in the halloysite modifications in the last 20 years with a particular attention to the development in the past two years.
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Affiliation(s)
- Marina Massaro
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy.
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116
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Bahri-Laleh N, Sadjadi S, Heravi MM, Malmir M. CuI-functionalized halloysite nanoclay as an efficient heterogeneous catalyst for promoting click reactions: Combination of experimental and computational chemistry. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4283] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naeimeh Bahri-Laleh
- Polymerization Engineering Department; Iran Polymer and Petrochemical Institute; PO Box 14965/115 Tehran Iran
| | - Samaheh Sadjadi
- Gas Conversion Department, Faculty of Petrochemicals; Iran Polymer and Petrochemical Institute; PO Box 14975-112 Tehran Iran
| | - Majid M. Heravi
- Department of Chemistry, School of Science; Alzahra University; Box 1993891176, Vanak Tehran Iran
| | - Masoumeh Malmir
- Department of Chemistry, School of Science; Alzahra University; Box 1993891176, Vanak Tehran Iran
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117
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Luo D, Zhang X, Shahid S, Cattell MJ, Gould DJ, Sukhorukov GB. Electrospun poly(lactic acid) fibers containing novel chlorhexidine particles with sustained antibacterial activity. Biomater Sci 2018; 5:111-119. [PMID: 27885369 DOI: 10.1039/c6bm00646a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The treatment of persistent infections often requires a high local drug concentration and sustained release of antimicrobial agents. This paper proposes the use of novel electrospinning of poly(lactic acid) (PLA) fibers containing uncoated and encapsulated chlorhexidine particles. Chlorhexidine particles with a mean (SD) diameter of 17.15 ± 1.99 μm were fabricated by the precipitation of chlorhexidine diacetate with calcium chloride. Layer-by-layer (LbL) encapsulation of the chlorhexidine particles was carried out to produce encapsulated particles. The chlorhexidine particles had a high chlorhexidine content (90%), and when they were electrospun into PLA fibers a bead-in-string structure was obtained. The chlorhexidine content in the fibers could be tuned and a sustained release over 650 h was produced, via chlorhexidine particle encapsulation. Chlorhexidine release was governed by the polyelectrolyte multilayer encapsulation as demonstrated by SEM and confocal imaging. The incorporation of uncoated and encapsulated chlorhexidine particles (0.5% and 1% wt/wt chlorhexidine) into the fibers did not cause toxicity to healthy fibroblasts or affect cell adhesion to the fibers over a period of 5 days. The chlorhexidine-containing fibers also demonstrated sustained antibacterial activity against E. coli via an agar diffusion assay and broth transfer assay. Therefore, the chlorhexidine-containing PLA fibers may be useful in the treatment of persistent infections in medicine and dentistry.
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Affiliation(s)
- Dong Luo
- School of Engineering and Materials Science, Queen Mary University of London, E1 4NS, UK.
| | - Xi Zhang
- School of Engineering and Materials Science, Queen Mary University of London, E1 4NS, UK.
| | - Saroash Shahid
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, E1 2AD, UK
| | - Michael J Cattell
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, E1 2AD, UK
| | - David J Gould
- William Harvey Research Institute, Queen Mary University of London, EC1M 6BQ, UK
| | - Gleb B Sukhorukov
- School of Engineering and Materials Science, Queen Mary University of London, E1 4NS, UK.
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118
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Ghelich P, Salehi Z, Mohajerzedeh S, Jafarkhani M. Experimental and numerical study on a novel microfluidic method to fabricate curcumin loaded calcium alginate microfibres. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Pejman Ghelich
- School of Chemical Engineering; College of Chemical Engineering; University of Tehran; 16 Azar Street Tehran Iran
| | - Zeinab Salehi
- School of Chemical Engineering; College of Chemical Engineering; University of Tehran; 16 Azar Street Tehran Iran
| | - Shams Mohajerzedeh
- School of Electrical and Computer Engineering, College of Electrical Engineering; University of Tehran; North Kargar Street Tehran Iran
| | - Mahboubeh Jafarkhani
- School of Chemical Engineering; College of Chemical Engineering; University of Tehran; 16 Azar Street Tehran Iran
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119
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Mousa M, Evans ND, Oreffo RO, Dawson JI. Clay nanoparticles for regenerative medicine and biomaterial design: A review of clay bioactivity. Biomaterials 2018; 159:204-214. [DOI: 10.1016/j.biomaterials.2017.12.024] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 12/21/2017] [Accepted: 12/31/2017] [Indexed: 11/17/2022]
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120
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Zhu J, Hou J, Zhang Y, Tian M, He T, Liu J, Chen V. Polymeric antimicrobial membranes enabled by nanomaterials for water treatment. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.071] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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121
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Antimicrobial gelatin-based elastomer nanocomposite membrane loaded with ciprofloxacin and polymyxin B sulfate in halloysite nanotubes for wound dressing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 87:128-138. [PMID: 29549942 DOI: 10.1016/j.msec.2018.02.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/08/2017] [Accepted: 02/28/2018] [Indexed: 02/06/2023]
Abstract
Bacterial infection is a major problem world-wide, especially in wound treatment where it can severely prolong the healing process. In this study, a double drug co-delivery elastic antibacterial nanocomposite was developed by combining ciprofloxacin (CPX) and polymyxin B sulfate-loaded halloysite clay nanotubes (HNTs-B) into a gelatin elastomer. CPX nanoparticles which act against both gram positive and gram-negative bacterium were dispersed directly in the matrix, and polymyxin B sulfate was loaded in HNTs and then distributed into the matrix. The effect of CPX and HNTs-B content on the physical properties, cytotoxicity, fibroblast adhesion and proliferation, in vitro drug release behavior and anti-bacterial properties were systematically investigated. The ciprofloxacin crystals and HNT-B were distributed in the matrix uniformly. The HNTs in the drug loading system not only enhanced the matrix' tensile strength but also slowed down the release rate of the high dissoluble polymyxin B sulfate. When the amount of HNT in the matrix increased, the thermal stability and tensile strength also increased but the polymyxin B sulfate release rate decreased because the HNTs prevented the drug release inside. All the nanocomposites exhibited antimicrobial activity against both gram-negative and gram-positive bacteria with the dual combination of drugs released from the nanocomposites. Furthermore, this kind of gelatin-based nanocomposites possesses higher water-absorbing quality, low cytotoxicity, adaptable biodegradability and good elasticity which can satisfy the requirements for an ideal biomaterial for use in wound healing applications.
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123
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Ghaderi-Ghahfarrokhi M, Haddadi-Asl V, Zargarian SS. Fabrication and characterization of polymer-ceramic nanocomposites containing drug loaded modified halloysite nanotubes. J Biomed Mater Res A 2018; 106:1276-1287. [DOI: 10.1002/jbm.a.36327] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 11/10/2017] [Accepted: 12/15/2017] [Indexed: 12/23/2022]
Affiliation(s)
| | - Vahid Haddadi-Asl
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
| | - Seyed Shahrooz Zargarian
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; Tehran Iran
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124
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Başaran İ, Oral A. Grafting of poly(ε-caprolactone) on electrospun gelatin nanofiber through surface-initiated ring-opening polymerization. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1417287] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- İhsan Başaran
- Department of Chemistry, Biopolymer and Advanced Polymeric Materials Laboratory, Faculty of Literature and Science, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
- Science Technology Application and Research Center, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Ayhan Oral
- Department of Chemistry, Biopolymer and Advanced Polymeric Materials Laboratory, Faculty of Literature and Science, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
- Science Technology Application and Research Center, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
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125
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Jenjob R, Seidi F, Crespy D. Encoding materials for programming a temporal sequence of actions. J Mater Chem B 2018; 6:1433-1448. [DOI: 10.1039/c7tb03215c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Materials are usually synthesized to allow a function that is either independent of time or that can be triggered in a specific environment.
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Affiliation(s)
- R. Jenjob
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Rayong 21210
- Thailand
| | - F. Seidi
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Rayong 21210
- Thailand
| | - D. Crespy
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Rayong 21210
- Thailand
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126
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Abstract
This review is focused on the use of membranes for the specific application of bone regeneration. The first section focuses on the relevance of membranes in this context and what are the specifications that they should possess to improve the regeneration of bone. Afterward, several techniques to engineer bone membranes by using "bulk"-like methods are discussed, where different parameters to induce bone formation are disclosed in a way to have desirable structural and functional properties. Subsequently, the production of nanostructured membranes using a bottom-up approach is discussed by highlighting the main advances in the field of bone regeneration. Primordial importance is given to the promotion of osteoconductive and osteoinductive capability during the membrane design. Whenever possible, the films prepared using different techniques are compared in terms of handability, bone guiding ability, osteoinductivity, adequate mechanical properties, or biodegradability. A last chapter contemplates membranes only composed by cells, disclosing their potential to regenerate bone.
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Affiliation(s)
- Sofia G Caridade
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
| | - João F Mano
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
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127
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Preparation of electrospun core–sheath yarn with enhanced bioproperties for biomedical materials. Biotechnol Lett 2017; 40:279-284. [DOI: 10.1007/s10529-017-2466-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 10/26/2017] [Indexed: 10/18/2022]
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128
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Degrazia FW, Genari B, Leitune VCB, Arthur RA, Luxan SA, Samuel SMW, Collares FM, Sauro S. Polymerisation, antibacterial and bioactivity properties of experimental orthodontic adhesives containing triclosan-loaded halloysite nanotubes. J Dent 2017; 69:77-82. [PMID: 29126948 DOI: 10.1016/j.jdent.2017.11.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 11/02/2017] [Accepted: 11/06/2017] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVE To evaluate the immediate enamel bond strength, in situ degree of conversion and the polymerisation rate of three experimental orthodontic adhesives containing triclosan-loaded halloysite nanotubes. The antibacterial and bioactivity properties of such experimental materials were also assessed. MATERIALS AND METHODS Three experimental orthodontic adhesives were formulated by incorporating triclosan-loaded halloysite nanotubes (TCN-HNT) at different concentrations (5wt%, 10wt% and 20wt%) into a resin blend (Control). The maximum polymerisation rate of the tested adhesives was evaluated trough FTIR, while Raman was used to analyse the in situ degree of conversion (DC) at the bracket/enamel interface. The shear bond strength (SBS) of the enamel-bonded specimens was assessed at 24h. The antibacterial properties of the experimental materials against S. Mutans were evaluate up to 72h, while, their bioactivity was evaluated after 14days of artificial saliva (AS) storage through SEM-EDS and Raman spectromicroscopy. RESULTS Incorporation of TCN-HNT increased the polymerisation properties without interfering with the immediate bonding properties of the experimental adhesives. All experimental adhesives containing TCN-HNT inhibited bacterial growth at 24h, and induced mineral deposition after 14days of AS storage. At 72h, only the experimental system containing 20% TCN-HNT maintained such a capability. CONCLUSIONS Adhesives doped with TCN-HNT present improved polymerisation properties and suitable bonding performance. However, only the adhesives containing TCN-HNT >10% might promote long-term antibacterial activity and reliable mineral deposition. CLINICAL SIGNIFICANCE The use of adhesives containing triclosan-loaded halloysite represents a promising "smart" approach to bond orthodontic brackets and bands; these might prevent enamel demineralisation and induce enamel remineralisation during the treatment.
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Affiliation(s)
- Felipe Weidenbach Degrazia
- Laboratório de Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Rio Branco, 90035-003, Porto Alegre, Brazil.
| | - Bruna Genari
- Centro Universitário do Distrito Federal (UDF), Brasília, Brazil.
| | - Vicente Castelo Branco Leitune
- Laboratório de Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Rio Branco, 90035-003, Porto Alegre, Brazil.
| | - Rodrigo Alex Arthur
- Laboratório de Bioquímica e Microbiologia Oral, Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil..
| | - Santiago Arias Luxan
- Orthodontics, Departamento de Odontologia - Facultad de Ciencias de la Salud, Universidad CEU-Cardenal Herrera, C/Del Pozo s/n, Alfara del Patriarca, Valencia, Spain.
| | - Susana Maria Werner Samuel
- Laboratório de Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Rio Branco, 90035-003, Porto Alegre, Brazil.
| | - Fabrício Mezzomo Collares
- Laboratório de Materiais Dentários, Faculdade de Odontologia, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Rio Branco, 90035-003, Porto Alegre, Brazil.
| | - Salvatore Sauro
- Dental Biomaterials, Preventive and Minimally Invasive Dentistry, Departamento de Odontologia - Facultad de Ciencias de la Salud, Universidad CEU-Cardenal Herrera, C/Del Pozo s/n, Alfara del Patriarca, Valencia, Spain. E-mail: ; Tissue Engineering and Biophotonics Research Division, King's College London Dental Institute (KCLDI), Floor 17 Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT (UK)
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129
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Fizir M, Dramou P, Zhang K, Sun C, Pham-Huy C, He H. Polymer grafted-magnetic halloysite nanotube for controlled and sustained release of cationic drug. J Colloid Interface Sci 2017. [DOI: 10.1016/j.jcis.2017.04.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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130
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Türkkan S, Pazarçeviren AE, Keskin D, Machin NE, Duygulu Ö, Tezcaner A. Nanosized CaP-silk fibroin-PCL-PEG-PCL/PCL based bilayer membranes for guided bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:484-493. [DOI: 10.1016/j.msec.2017.06.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 05/26/2017] [Accepted: 06/16/2017] [Indexed: 11/30/2022]
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131
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Maity J, Ray SK. Chitosan based nano composite adsorbent-Synthesis, characterization and application for adsorption of binary mixtures of Pb(II) and Cd(II) from water. Carbohydr Polym 2017; 182:159-171. [PMID: 29279111 DOI: 10.1016/j.carbpol.2017.10.086] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/18/2017] [Accepted: 10/24/2017] [Indexed: 11/27/2022]
Abstract
Composite type adsorbent was prepared by integrating chitosan (Cs) with crosslinked polymethacrylic acid (PMA) and nano sized halloysite nanotube (HNT). The structure of the resulting Cs-PMA/HNT adsorbents was characterized by FTIR, NMR, XRD, TGA, SEM/EDX and rheological properties. These functional adsorbents were used for removal of Pb(II) and Cd(II) as single and binary competitive mixtures from water. There was a significant improvement in adsorption properties of crosslinked PMA in the presence of Cs and HNT. The effect of synthesis parameters such as wt.% of Cs and HNT on swelling and process parameters such as solution pH, adsorbent dosage, contact time and feed concentration on adsorption of metal ions from water were studied in batch experiments. For a feed concentration of 100mg/L of metal ion, an adsorbent dose of 0.25g/L and a solution pH of 6, the Cs-PMA/HNT composite adsorbent containing 4wt% Cs and 3wt% HNT showed an adsorption capacity (mg/g)/removal% of 357.4/89.4 and 341.6/85.4 for single Pb(II) and Cd(II), respectively which reduced to 313.7/78.4 and 303.6/77.3 for the same metal ions in their binary mixtures in water.
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Affiliation(s)
- Jayabrata Maity
- Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Samit Kumar Ray
- Department of Polymer Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.
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132
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Zhou Q, Zhang H, Zhou Y, Yu Z, Yuan H, Feng B, van Rijn P, Zhang Y. Alkali-Mediated Miscibility of Gelatin/Polycaprolactone for Electrospinning Homogeneous Composite Nanofibers for Tissue Scaffolding. Macromol Biosci 2017; 17. [PMID: 29068545 DOI: 10.1002/mabi.201700268] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/12/2017] [Indexed: 11/12/2022]
Abstract
Electrospun natural-synthetic composite nanofibers, which possess favorable biological and mechanical properties, have gained widespread attention in tissue engineering. However, the development of biomimetic nanofibers of hybrids remains a huge challenge due to phase separation of the polymer blends. Here, aqueous sodium hydroxide (NaOH) solution is proposed to modulate the miscibility of a representative natural-synthetic hybrid of gelatin (GT) and polycaprolactone (PCL) for electrospinning homogeneous composite nanofibers. Alkali-doped GT/PCL solutions and nanofibers examined at macroscopic, microscopic, and internal molecular levels demonstrate appropriate miscibility of GT and PCL after introducing the alkali dopant. Particularly, homogeneous GT/PCL nanofibers with smooth surface and uniform diameter are obtained when aqueous NaOH solution with a concentration of 10 m is used. The fibers become more hydrophilic and possess improved mechanical properties both in dry and wet conditions. Moreover, biocompatibility experiments show that stem cells adhere to and proliferate better on the alkali-modified nanofibers than the untreated one. This study provides a facile and effective approach to solve the phase separation issue of the synthetic-natural hybrid GT/PCL and establishes a correlation of compositionally and morphologically homogeneous composite nanofibers with respect to cell responses.
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Affiliation(s)
- Qihui Zhou
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.,Department of Biomedical Engineering-FB40, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University of GroningenUniversity Medical Center Groningen, A. Deusinglaan 1,, 9713, AV Groningen, The Netherlands
| | - Huilan Zhang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Ya Zhou
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Zhepao Yu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Huihua Yuan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.,School of Life Sciences, Nantong University, Nantong, Jiangsu, 226019, China
| | - Bei Feng
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China
| | - Patrick van Rijn
- Department of Biomedical Engineering-FB40, W.J. Kolff Institute for Biomedical Engineering and Materials Science-FB41, University of GroningenUniversity Medical Center Groningen, A. Deusinglaan 1,, 9713, AV Groningen, The Netherlands
| | - Yanzhong Zhang
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, China.,China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058, China
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133
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Kerdsakundee N, Li W, Martins JP, Liu Z, Zhang F, Kemell M, Correia A, Ding Y, Airavaara M, Hirvonen J, Wiwattanapatapee R, Santos HA. Multifunctional Nanotube-Mucoadhesive Poly(methyl vinyl ether-co-maleic acid)@Hydroxypropyl Methylcellulose Acetate Succinate Composite for Site-Specific Oral Drug Delivery. Adv Healthc Mater 2017; 6. [PMID: 28714596 DOI: 10.1002/adhm.201700629] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/19/2017] [Indexed: 11/11/2022]
Abstract
An advanced oral drug delivery system that can effectively deliver drugs with poor oral bioavailability is strongly desirable. Herein, a multifunctional nano-in-micro structured composite is developed by encapsulation of the mucoadhesive poly(methyl vinyl ether-co-maleic acid) modified halloysite nanotubes (HNTs) with the pH-responsive hydroxypropyl methylcellulose acetate succinate by the microfluidics to control the drug release, increase cell-particle interaction, and improve drug absorption. The microparticles show spherical shape, homogeneous particle size distribution (58 ± 1 µm), and pH-responsive dissolution behavior at pH > 6, and they prevent the premature release of curcumin in simulated pH conditions of the stomach and immediately release the curcumin in simulated pH conditions of the small intestine. The surface modification of HNT with mucoadhesive poly(methyl vinyl ether-co-maleic acid) significantly enhances its interactions with the intestinal Caco-2/HT29-MTX cells and the mouse small intestines, and increases the permeability of curcumin across the co-cultured Caco-2/HT29-MTX cell monolayers by about 13 times compared to the free curcumin. Therefore, the developed multifunctional nanotube-mucoadhesive poly(methyl vinyl ether-co-maleic acid)@hydroxypropyl methylcellulose acetate succinate composite is a promising oral drug delivery system for drugs with poor oral bioavailability.
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Affiliation(s)
- Nattha Kerdsakundee
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
- Department of Pharmaceutical Technology; Faculty of Pharmaceutical Sciences; Prince of Songkla University; 90110 Hat Yai Thailand
| | - Wei Li
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - João Pedro Martins
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - Zehua Liu
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - Feng Zhang
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - Marianna Kemell
- Department of Chemistry; Faculty of Science; University of Helsinki; FI-00014 Helsinki Finland
| | - Alexandra Correia
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - Yaping Ding
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - Mikko Airavaara
- Institute of Biotechnology; University of Helsinki; FI-00014 Helsinki Finland
| | - Jouni Hirvonen
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
| | - Ruedeekorn Wiwattanapatapee
- Department of Pharmaceutical Technology; Faculty of Pharmaceutical Sciences; Prince of Songkla University; 90110 Hat Yai Thailand
| | - Hélder A. Santos
- Drug Research Program, Division of Pharmaceutical Chemistry Technology; Faculty of Pharmacy; University of Helsinki; FI-00014 Helsinki Finland
- Helsinki Institute of Life Science; HiLIFE; University of Helsinki; FI-00014 Helsinki Finland
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134
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Liu F, Bai L, Zhang H, Song H, Hu L, Wu Y, Ba X. Smart H 2O 2-Responsive Drug Delivery System Made by Halloysite Nanotubes and Carbohydrate Polymers. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31626-31633. [PMID: 28862828 DOI: 10.1021/acsami.7b10867] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel chemical hydrogel was facilely achieved by coupling 1,4-phenylenebisdiboronic acid modified halloysite nanotubes (HNTs-BO) with compressible starch. The modified halloysite nanotubes (HNTs) and prepared hydrogel were characterized by solid-state nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscope (TEM). The linkage of B-C in the hydrogel can be degraded into B-OH and C-OH units in the presence of H2O2 and result in the degradation of the chemical hydrogel. Pentoxifylline was loaded into the lumen of the HNTs-BO, and then gave the pentoxifylline-loaded hydrogel. The drug release profile shows that it was no more than 7% dissolved when using phosphate buffer solution (PBS) as the release medium. Notably, a complete release (near 90%) can be achieved with the addition of H2O2 ([H2O2] = 1 × 10-4 M), suggesting a high H2O2 responsiveness of the as-formed hydrogel. The drug release results also show that the "initial burst release" can be effectively suppressed by loading pentoxifylline inside the lumen of the HNTs rather than embedding the drug in the hydrogel network. The drug-loaded hydrogel with H2O2-responsive release behavior may open up a broader application in the field of biomedicine.
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Affiliation(s)
- Feng Liu
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
| | - Libin Bai
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
| | - Hailei Zhang
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
| | - Hongzan Song
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
| | - Liandong Hu
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
| | - Yonggang Wu
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
| | - Xinwu Ba
- College of Chemistry and Environmental Science, and ‡School of Pharmaceutical Science, Hebei University , Baoding, Hebei Province 071002, People's Republic of China
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135
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Hu Y, Chen J, Li X, Sun Y, Huang S, Li Y, Liu H, Xu J, Zhong S. Multifunctional halloysite nanotubes for targeted delivery and controlled release of doxorubicin in-vitro and in-vivo studies. NANOTECHNOLOGY 2017; 28:375101. [PMID: 28767041 DOI: 10.1088/1361-6528/aa8393] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The current state of cancer therapy encourages researchers to develop novel efficient nanocarriers. Halloysite nanotubes (HNTs) are good nanocarrier candidates due to their unique nanoscale (40-80 nm in diamter and 200-500 nm in length) and hollow lumen, as well as good biocompatibility and low cost. In our study, we prepared a type of folate-mediated targeting and redox-triggered anticancer drug delivery system, so that Doxorubicin (DOX) can be specifically transported to tumor sites due to the over-expressed folate-receptors on the surface of cancer cells. Furthermore, it can then be released by the reductive agent glutathione (GSH) in cancer cells where the content of GSH is nearly 103-fold higher than in the extracellular matrix. A series of methods have demonstrated that per-thiol-β-cyclodextrin (β-CD-(SH)7) was successfully combined with HNTs via a redox-responsive disulfide bond, and folic acid-polyethylene glycol-adamantane (FA-PEG-Ad) was immobilized on the HNTs through the strong complexation between β-CD/Ad. In vitro studies indicated that the release rate of DOX raised sharply in dithiothreitol (DTT) reducing environment and the amount of released DOX reached 70% in 10 mM DTT within the first 10 h, while only 40% of DOX was released in phosphate buffer solution (PBS) even after 79 h. Furthermore, the targeted HNTs could be specifically endocytosed by over-expressed folate-receptor cancer cells and significantly accelerate the apoptosis of cancer cells compared to non-targeted HNTs. In vivo studies further verified that the targeted HNTs had the best therapeutic efficacy and no obvious side effects for tumor-bearing nude mice, while free DOX showed damaging effects on normal tissues. In summary, this novel nanocarrier system shows excellent potential for targeted delivery and controlled release of anticancer drugs and provides a potential platform for tumor therapy.
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136
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Li J, Xu W, Chen J, Li D, Zhang K, Liu T, Ding J, Chen X. Highly Bioadhesive Polymer Membrane Continuously Releases Cytostatic and Anti-Inflammatory Drugs for Peritoneal Adhesion Prevention. ACS Biomater Sci Eng 2017; 4:2026-2036. [DOI: 10.1021/acsbiomaterials.7b00605] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiannan Li
- Department of General Surgery, The Second Hospital of Jilin University, Changchun 130041, P. R. China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Weiguo Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Jinjin Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Di Li
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Kai Zhang
- Department of General Surgery, The Second Hospital of Jilin University, Changchun 130041, P. R. China
| | - Tongjun Liu
- Department of General Surgery, The Second Hospital of Jilin University, Changchun 130041, P. R. China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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137
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Fu Y, Gong C, Wang W, Zhang L, Ivanov E, Lvov Y. Antifouling Thermoplastic Composites with Maleimide Encapsulated in Clay Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30083-30091. [PMID: 28812870 DOI: 10.1021/acsami.7b09677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An antifouling ethylene-vinyl acetate copolymer (EVA) coating with halloysite clay nanotubes loaded with maleimide (TCPM) is prepared. Such antifoulant encapsulation allowed for extended release of TCPM and a long-lasting, efficient protection of the coated surface against marine microorganisms proliferation. Halloysite also induces the composite's anisotropy due to parallel alignment of the nanotubes. The maleimide loaded halloysite incorporated into the polymer matrix allowed for 12-month release of the bacterial inhibitor preventing fouling; it is much longer than the 2-3 month protection when TCPM is directly admixed into EVA. The antifouling properties of the EVA-halloysite nanocomposites were tested by monitoring surface adhesion and proliferation of marine V. natriegens bacteria with SEM. As compared to the composite directly doped with TCPM-antifoulant, there were much less bacteria accumulated on the EVA-halloysite-TCPM coating after a 2-month exposure to seawater. Field tests at South China Sea marine station further confirmed the formulation efficiency. The doping of 28 wt % TCPM loaded halloysite drastically enhanced material antifouling property, which promises wide applications for protective marine coating.
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Affiliation(s)
| | | | | | | | - Evgenii Ivanov
- I. Gubkin Russian State University of Oil and Gas , Moscow 119296, Russia
| | - Yuri Lvov
- Institute for Micromanufacturing, Louisiana Tech University , Ruston, Louisiana 71272, United States
- I. Gubkin Russian State University of Oil and Gas , Moscow 119296, Russia
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138
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Long-acting and broad-spectrum antimicrobial electrospun poly (ε-caprolactone)/gelatin micro/nanofibers for wound dressing. J Colloid Interface Sci 2017; 509:275-284. [PMID: 28915485 DOI: 10.1016/j.jcis.2017.08.092] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/24/2017] [Accepted: 08/29/2017] [Indexed: 12/19/2022]
Abstract
Trimethoxysilylpropyl octadecyldimethyl ammonium chloride (QAS), which forms facile bonds with hydroxyl groups, acts asa cationic antibacterial agent. In this work, QAS was introduced into a polycaprolactone (PCL)/gelatin hybrid in increasing concentrations to fabricate a long-acting and broad-spectrum antimicrobial micro/nanofiber membrane as a novel wound dressing. The physical interactions and chemical bonding between QAS/PCL and QAS/gelatin were demonstrated by infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS. Measured water contact angle between the PCL-gelatin/QAS (PG-Q) nanofiber membranes suggested a hydrophobic surface, which has been shown to aid in removal of wound dressings. The mechanical strength of the membranes was sufficient to meet the clinical requirements. Furthermore, the 15% QAS (PG-Q15) and 20% QAS (PG-Q20) formulated nanofiber membranes showed a considerable increase in their bacteriostatic activity towards Staphylococcus aureus (gram-positive) and Pseudomonas aeruginosa (gram-negative) bacteria, suggesting a broad-spectrum bactericidal effect by the PG-Q membranes. The PG-Q membranes with various QAS formulations demonstrated little cytotoxicity. Therefore, the long-acting and broad-spectrum antimicrobial electrospun PG-Q micro/nanofibers membrane demonstrate potential efficacy asan antibacterial wound dressing.
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139
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Kurczewska J, Pecyna P, Ratajczak M, Gajęcka M, Schroeder G. Halloysite nanotubes as carriers of vancomycin in alginate-based wound dressing. Saudi Pharm J 2017; 25:911-920. [PMID: 28951678 PMCID: PMC5605850 DOI: 10.1016/j.jsps.2017.02.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/11/2017] [Indexed: 11/16/2022] Open
Abstract
The influence of an inorganic support - halloysite nanotubes - on the release rate and biological activity of the antibiotic encapsulated in alginate-based dressings was studied. The halloysite samples were loaded with approx. 10 wt.% of the antibiotic and then encapsulated in Alginate and Gelatin/Alginate gels. The material functionalized with aliphatic amine significantly extended the release of vancomycin from alginate-based gels as compared to that achieved when silica was used. After 24 h, the released amounts of the antibiotic immobilized at silica reached 70%, while for the drug immobilized at halloysite the released amount of vancomycin reached 44% for Alginate discs. The addition of gelatin resulted in even more prolonged sustained release of the drug. The antibiotic was released from the system with a double barrier with Higuchi kinetic model and Fickian diffusion mechanism. Only the immobilized drug encapsulated in Alginate gel demonstrated very good antimicrobial activity against various bacteria. The inhibition zones were greater than those of the standard discs for the staphylococci and enterococci bacteria tested. The addition of gelatin adversely affected the biological activity of the system. The inhibition zones were smaller than those of the reference samples. A reduction in the drug dose by half had no significant effect on changing the release rate and microbiological activity. The in vivo toxicity studies of the material with immobilized drug were carried out with Acutodesmus acuminatus and Daphnia magna. The material studied had no effect on the living organisms used in the bioassays. The proposed system with a double barrier demonstrated high storage stability.
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Affiliation(s)
- Joanna Kurczewska
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
| | - Paulina Pecyna
- Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Święcickiego 4, 60-781 Poznań, Poland
| | - Magdalena Ratajczak
- Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Święcickiego 4, 60-781 Poznań, Poland
| | - Marzena Gajęcka
- Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Święcickiego 4, 60-781 Poznań, Poland
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszyńska 32, 60-479 Poznań, Poland
| | - Grzegorz Schroeder
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
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140
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Lin J, Ding J, Dai Y, Wang X, Wei J, Chen Y. Antibacterial zinc oxide hybrid with gelatin coating. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 81:321-326. [PMID: 28887979 DOI: 10.1016/j.msec.2017.08.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 07/29/2017] [Accepted: 08/02/2017] [Indexed: 12/17/2022]
Abstract
ZnO has been widely investigated as important biomaterials and antibacterial materials. However, the aggregation of nanoparticles and its potential toxicity may hinder its final application. Herein, biocompatible gelatin chains were grafted on the surface of ZnO via mussel inspired method to prevent the aggregation of the ZnO nanoparticles. The in vitro test showed that the gelatin can greatly improve the biocompatibility of ZnO, while the antibacterial properties of ZnO against both E. coli and S. aureus were maintained.
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Affiliation(s)
- Jun Lin
- College of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
| | - Yanfeng Dai
- College of Chemistry, Nanchang University, Nanchang 330031, PR China
| | - Xiaolei Wang
- College of Chemistry, Nanchang University, Nanchang 330031, PR China; Institue of Translational Medicine, Nanchang University, Nanchang 330031, PR China
| | - Junchao Wei
- College of Chemistry, Nanchang University, Nanchang 330031, PR China.
| | - Yiwang Chen
- College of Chemistry, Nanchang University, Nanchang 330031, PR China
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141
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Electrically-responsive core-shell hybrid microfibers for controlled drug release and cell culture. Acta Biomater 2017; 55:434-442. [PMID: 28392307 DOI: 10.1016/j.actbio.2017.04.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 03/28/2017] [Accepted: 04/05/2017] [Indexed: 11/23/2022]
Abstract
It is an active research field to develop fiber-shaped smart materials for biomedical applications. Here we report the development of the multifunctional core-shell hybrid microfibers with excellent mechanical and electrical performance as a new smart biomaterial. The microfibers were synthesized using a combination of co-axial spinning with a microfluidic device and subsequent dip-coating, containing a hydrogel core of bacterial cellulose (BC) and a conductive polymer shell layer of poly(3,4-ethylenedioxythiophene) (PEDOT). The hybrid microfibers were featured with a well-controlled microscopic morphology, exhibiting enhanced mechanic properties. A model drug, diclofenac sodium, can be loaded in the core layer of the microfibers in situ during the process of synthesis. Our experiments suggested that the releasing behaviors of the drug molecules from the microfibers were enhanced by external electrical stimulation. Interestingly, we demonstrated an excellent biocompatibility and electroactivity of the hybrid microfibers for PC12 cell culture, thus promising a flexible template for the reconstruction of electrically-responsive tissues mimicking muscle fibers or nerve networks. STATEMENT OF SIGNIFICANCE Fiber-shaped biomaterials are useful in creating various functional objects from one dimensional to three-dimensional. The fabrication of microfibers with integrated physicochemical properties and bio-performance has drawn an increasing attention on researchers from chemical to biomedical. This study combined biocompatible bacterial cellulose with electroconductive poly(3,4-ethylenedioxythiophene) and further reduced them to a highly electroactive BC/PEDOT core-shell microfiber electrode for electrochemical actuator design. The result showed that the microfibers were well fabricated and the release of drugs from the microfibers was enhanced and could be controlled under electrical stimulation externally. Considering the excellent biocompatibility and electroactive toward PC12 cells, these microfibers may find use as templates for the reconstruction of fiber-shaped functional tissues that mimic muscle fibers, blood vessels or nerve networks in vivo.
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142
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Mehmood MF, Sangermano M, Gule NP, Tiraferri A, Mallon PE. Online UV Curing of Electrospun Polysulfone Fibers Containing an Acrylate as Cross-Linker. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Mian Farrukh Mehmood
- Department of Applied Science and Technology; Politecnico Di Torino; 10129 Torino Italy
| | - Marco Sangermano
- Department of Applied Science and Technology; Politecnico Di Torino; 10129 Torino Italy
| | - Nonjabulo Prudence Gule
- Department of Chemistry and Polymer Science; University of Stellenbosch; 7600 Stellenbosch South Africa
| | - Alberto Tiraferri
- Department of Environment; Land and Infrastructure Engineering; Politecnico Di Torino; 10129 Torino Italy
| | - Peter E. Mallon
- Department of Chemistry and Polymer Science; University of Stellenbosch; 7600 Stellenbosch South Africa
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143
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Insight into the precursor nanofibers on the flexibility of La2O3-ZrO2 nanofibrous membranes. E-POLYMERS 2017. [DOI: 10.1515/epoly-2016-0088] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractPoly(vinyl pyrrolidone) (PVP)/La3+/Zr4+ precursor nanofibrous membranes (LZPNM) with various Zr contents were synthesized via a simple electrospinning method. By controlling the Zr incorporation, the tensile properties of precursor membranes dramatically change from 0.77 to 1.73 MPa. Meanwhile, the average diameters of precursor nanofibers increase with the increase of Zr contents (from 283 to 535 nm). In addition, flexible La2O3-ZrO2 nanofibrous membranes (LZNM) were obtained by calcination of corresponding precursor membranes. Furthermore, the structures and morphologies of the precursor membranes were investigated using X-ray powder diffraction analysis (XRD) and field-emission scanning electron microscopy (FE-SEM). The surface functional groups and thermal properties of the precursor membranes were measured via Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA).
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144
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Ji L, Qiao W, Zhang Y, Wu H, Miao S, Cheng Z, Gong Q, Liang J, Zhu A. A gelatin composite scaffold strengthened by drug-loaded halloysite nanotubes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:362-369. [PMID: 28575996 DOI: 10.1016/j.msec.2017.04.070] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 04/11/2017] [Accepted: 04/13/2017] [Indexed: 11/15/2022]
Abstract
Mechanical properties and anti-infection are two of the most concerned issues for artificial bone grafting materials. Bone regeneration porous scaffolds with sustained drug release were developed by freeze-drying the mixture of nanosized drug-loaded halloysite nanotubes (HNTs) and gelatin. The scaffolds showed porous structure and excellent biocompatibility. The mechanical properties of the obtained composite scaffolds were enhanced significantly by HNTs to >300%, comparing to those of gelatin scaffold, and match to those of natural cancellous bones. The ibuprofen-loaded HNTs incorporated in the scaffolds allowed extended drug release over 100h, comparing to 8h when directly mixed the drug into the gelatin scaffold. The biological properties of the composite scaffolds were investigated by culturing MG63 cells on them. The HNTs/gelatin scaffolds with excellent mechanical properties and sustained drug release could be a promising artificial bone grating material.
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Affiliation(s)
- Lijun Ji
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Wei Qiao
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yuheng Zhang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Huayu Wu
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Shiyong Miao
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Zhilin Cheng
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | | | - Ji Liang
- Department of Materials, Tsinghua University, China
| | - Aiping Zhu
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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145
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He M, Jiang H, Wang R, Xie Y, Zhao C. Fabrication of metronidazole loaded poly (ε-caprolactone)/zein core/shell nanofiber membranes via coaxial electrospinning for guided tissue regeneration. J Colloid Interface Sci 2017; 490:270-278. [DOI: 10.1016/j.jcis.2016.11.062] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/16/2016] [Accepted: 11/18/2016] [Indexed: 11/28/2022]
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146
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He CW, Parowatkin M, Mailänder V, Flechtner-Mors M, Ziener U, Landfester K, Crespy D. Sequence-Controlled Delivery of Peptides from Hierarchically Structured Nanomaterials. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3885-3894. [PMID: 28051296 DOI: 10.1021/acsami.6b13176] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Peptide drugs delivered orally need to be protected from degradation for achieving their functions. To fulfill the complicated task of oral drug delivery, we present a hierarchically structured drug-delivery system that can undertake structural changes, so multiple functions can be triggered by a sequence of stimuli. Such hierarchical system is achieved in a nanoparticle-in-nanofiber configuration, in which both the nanofibers and the nanoparticles are pH-responsive and biocompatible. A model peptide is efficiently encapsulated under mild condition, and the nanocarriers are further electrospun with a pH-responsive mucoadhesive polymer. The nanoparticles are released from the nanofibers, and thereafter the peptides are released from the nanoparticles in a pH-responsive manner. The nanoparticles are compatible with caco-2 cells, and the endocytosis of the nanoparticles is described in detail.
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Affiliation(s)
- Carl Wei He
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Maria Parowatkin
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Volker Mailänder
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | | | | | - Katharina Landfester
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
| | - Daniel Crespy
- Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology , 21210 Rayong, Thailand
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147
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Švachová V, Khunová V, Pavliňák D, Fohlerová Z, Vojtová L. The Effect of halloysite on structure and properties of polycaprolactone/gelatin nanofibers. POLYM ENG SCI 2017. [DOI: 10.1002/pen.24512] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Veronika Švachová
- Institute of Materials Chemistry, Brno University of Technology; Brno 612 00 Czech Republic
- CEITEC-Central European Institute of Technology, Brno University of Technology; Brno 616 00 Czech Republic
| | - Viera Khunová
- Institute of Natural and Synthetic Polymers, Slovak University of Technology, FCHPT; Bratislava 812 37 Slovakia
| | - David Pavliňák
- Department of Physical Electronics; Masaryk University; Brno 611 37 Czech Republic
| | - Zdenka Fohlerová
- CEITEC-Central European Institute of Technology, Brno University of Technology; Brno 616 00 Czech Republic
| | - Lucy Vojtová
- CEITEC-Central European Institute of Technology, Brno University of Technology; Brno 616 00 Czech Republic
- SCITEG, a.s; Brno Czech Republic
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148
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Li W, Liu D, Zhang H, Correia A, Mäkilä E, Salonen J, Hirvonen J, Santos HA. Microfluidic assembly of a nano-in-micro dual drug delivery platform composed of halloysite nanotubes and a pH-responsive polymer for colon cancer therapy. Acta Biomater 2017; 48:238-246. [PMID: 27815166 DOI: 10.1016/j.actbio.2016.10.042] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/25/2016] [Accepted: 10/30/2016] [Indexed: 02/07/2023]
Abstract
Harsh conditions of the gastrointestinal tract hinder the oral delivery of many drugs. Developing oral drug delivery systems based on commercially available materials is becoming more challenging due to the demand for simultaneously delivering physicochemically different drugs for treating complex diseases. A novel architecture, namely nanotube-in-microsphere, was developed as a drug delivery platform by encapsulating halloysite nanotubes (HNTs) in a pH-responsive hydroxypropyl methylcellulose acetate succinate polymer using microfluidics. HNTs were selected as orally acceptable clay mineral and their lumen was enlarged by selective acid etching. Model drugs (atorvastatin and celecoxib) with different physicochemical properties and synergistic effect on colon cancer prevention and inhibition were simultaneously incorporated into the microspheres at a precise ratio, with atorvastatin and celecoxib being loaded in the HNTs and polymer matrix, respectively. The microspheres showed spherical shape, narrow particle size distribution and pH-responsive dissolution behavior. This nanotube/pH-responsive polymer composite protected the loaded drugs from premature release at pH⩽6.5, but allowed their fast release and enhanced the drug permeability, and the inhibition of colon cancer cell proliferation at pH 7.4. Overall, the nano-in-micro drug delivery composite fabricated by microfluidics is a promising and flexible platform for the delivery of multiple drugs for combination therapy. STATEMENT OF SIGNIFICANCE Halloysite nanotubes (HNTs) are attracting increasing attention for drug delivery applications. However, conventional HNTs-based oral drug delivery systems are lack of the capability to precisely control the drug release at a desired site in the gastrointestinal tract. In this study, a nanotube-in-microsphere drug delivery platform is developed by encapsulating HNTs in a pH-responsive polymer using microfluidics. Drugs with different physicochemical properties and synergistic effect on colon cancer therapy were simultaneously incorporated in the microspheres. The prepared microspheres prevented the premature release of the loaded drugs after exposure to the harsh conditions of the gastrointestinal tract, but allowed their simultaneously fast release, and enhanced the drug permeability and the inhibition of colon cancer cell proliferation in response to the colon pH.
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149
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Sun J, Yendluri R, Liu K, Guo Y, Lvov Y, Yan X. Enzyme-immobilized clay nanotube–chitosan membranes with sustainable biocatalytic activities. Phys Chem Chem Phys 2017; 19:562-567. [DOI: 10.1039/c6cp07450b] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed a simple and effective strategy to prepare an enzymatic membrane by the admixing of a halloysite clay nanotube–lipase complex and a chitosan solution.
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Affiliation(s)
- Jiajia Sun
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Raghuvara Yendluri
- Institute for Micromanufacturing and Biomedical Engineering Program
- Louisiana Tech University
- Ruston
- USA
| | - Kai Liu
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Ying Guo
- School of Chemistry and Environmental Engineering
- Harbin University of Science and Technology
- Harbin 150080
- China
| | - Yuri Lvov
- Institute for Micromanufacturing and Biomedical Engineering Program
- Louisiana Tech University
- Ruston
- USA
- I. Gubkin Russian State University of Oil and Gas
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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150
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Wu Y, Yang Y, Liu H, Yao X, Leng F, Chen Y, Tian W. Long-term antibacterial protected cotton fabric coating by controlled release of chlorhexidine gluconate from halloysite nanotubes. RSC Adv 2017. [DOI: 10.1039/c7ra01464c] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An antibacterial HNTs/CG composite with controlled release was prepared, and used to coat cotton to obtain an antibacterial and biocompatible cotton fabric.
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Affiliation(s)
- Yu Wu
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
| | - Yongtao Yang
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
| | - Haoyang Liu
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
| | - Xihui Yao
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
| | - Fan Leng
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
| | - Yun Chen
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
| | - Weiqun Tian
- Department of Biomedical Engineering
- School of Basic Medical Sciences
- Wuhan University
- Wuhan 430071
- P. R. China
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