101
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102
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Mendes AC, Strohmenger T, Goycoolea F, Chronakis IS. Electrostatic self-assembly of polysaccharides into nanofibers. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.07.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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103
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Rheological properties of N-[(2-hydroxyl)-propyl-3-trimethyl ammonium] chitosan chloride. Carbohydr Polym 2017; 171:50-58. [DOI: 10.1016/j.carbpol.2017.05.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 05/02/2017] [Indexed: 12/18/2022]
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104
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Oliveira LT, de Paula MA, Roatt BM, Garcia GM, Silva LSB, Reis AB, de Paula CS, Vilela JMC, Andrade MS, Pound-Lana G, Mosqueira VCF. Impact of dose and surface features on plasmatic and liver concentrations of biodegradable polymeric nanocapsules. Eur J Pharm Sci 2017; 105:19-32. [DOI: 10.1016/j.ejps.2017.04.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 11/17/2022]
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105
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106
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Enhanced mechanical properties of chitosan/nanodiamond composites by improving interphase using thermal oxidation of nanodiamond. Carbohydr Polym 2017; 167:219-228. [DOI: 10.1016/j.carbpol.2017.03.048] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 03/12/2017] [Accepted: 03/13/2017] [Indexed: 11/24/2022]
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107
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Cui Z, Zheng Z, Lin L, Si J, Wang Q, Peng X, Chen W. Electrospinning and crosslinking of polyvinyl alcohol/chitosan composite nanofiber for transdermal drug delivery. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21850] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhixiang Cui
- School of Materials Science and Engineering; Fuzhou University; Fujian China
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
| | - Zifeng Zheng
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
| | - Luyin Lin
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
| | - Junhui Si
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
| | - Qianting Wang
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
| | - Xiangfang Peng
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
| | - Wenzhe Chen
- School of Materials Science and Engineering; Fuzhou University; Fujian China
- School of Materials Science and Engineering; Fujian University of Technology; Fujian China
- Fujian Provincial Key Laboratory of Advanced Materials Processing and Application; Fujian China
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108
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Wu F, Xu T, Zhao G, Meng S, Wan M, Chi B, Mao C, Shen J. Mesoporous Silica Nanoparticles-Encapsulated Agarose and Heparin as Anticoagulant and Resisting Bacterial Adhesion Coating for Biomedical Silicone. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:5245-5252. [PMID: 28498661 DOI: 10.1021/acs.langmuir.7b00567] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Silicone catheter has been widely used in peritoneal dialysis. The research missions of improving blood compatibility and the ability of resisting bacterial adhesion of silicone catheter have been implemented for the biomedical requirements. However, most of modification methods of surface modification were only able to develop the blood-contacting biomaterials with good hemocompatibility. It is difficult for the biomaterials to resist bacterial adhesion. Here, agarose was selected to resist bacterial adhesion, and heparin was chosen to improve hemocompatibility of materials. Both of them were loaded into mesoporous silica nanoparticles (MSNs), which were successfully modified on the silicone film surface via electrostatic interaction. Structures of the mesoporous coatings were characterized in detail by dynamic light scattering, transmission electron microscopy, Brunauer-Emmett-Teller surface area, thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscope, and water contact angle. Platelet adhesion and aggregation, whole blood contact test, hemolysis and related morphology test of red blood cells, in vitro clotting time tests, and bacterial adhesion assay were performed to evaluate the anticoagulant effect and the ability of resisting bacterial adhesion of the modified silicone films. Results indicated that silicone films modified by MSNs had a good anticoagulant effect and could resist bacterial adhesion. The modified silicone films have potential as blood-contacting biomaterials that were attributed to their biomedical properties.
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Affiliation(s)
- Fan Wu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
| | - Tingting Xu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University , Nanjing 211816, China
| | - Guangyao Zhao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
| | - Shuangshuang Meng
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
| | - Mimi Wan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
| | - Bo Chi
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing Tech University , Nanjing 211816, China
| | - Chun Mao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, China
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109
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Preparation of carboxymethyl chitosan nanofibers through electrospinning the ball-milled nanopowders with poly (lactic acid) and the blood compatibility of the electrospun NCMC/PLA mats. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1224-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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110
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Ribeiro WL, Camurça-Vasconcelos AL, Santos JMD, Macedo IT, Ribeiro JDC, Oliveira EFD, Paula HCD, Bevilaqua CM. The use of Eucalyptus staigeriana nanoemulsion for control of sheep haemonchosis. PESQUISA VETERINARIA BRASILEIRA 2017. [DOI: 10.1590/s0100-736x2017000300004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
ABSTRACT: Sustainable control of gastrointestinal nematodes (GIN) in small ruminants has been based on the use of alternative methods, including targeted selective treatment, such as FAMACHA. Another GIN control alternative is the use of herbal medicines, although in many cases their use is based on empirical knowledge. Biopolymer nanoformulations has been investigated to maximize the essential oil effects against sheep gastrointestinal nematodes. The aim of the present study was to combine a Eucalyptus staigeriana essential oil nanoemulsion (EsNano) with FAMACHA as an alternative control for sheep haemonchosis. The study was performed over six months at a commercial sheep farm located in a semiarid region of Northeast Brazil. Initially, a fecal egg count reduction test (FECRT) in sheep with levamisole, ivermectin and oxfendazole in sheep was performed used to determine the most effective anthelmintic to use as the positive control. Levamisole has been selected because it showed efficacy superior to 95%. EsNano was obtained and then its physicochemical properties were characterized. The average (±SE) size of the particles in the nanoemulsion was 276.8 (±12.3) nm with bimodal distribution and polydispersity. Nine visits were performed, from April to September 2013, with an interval of 17 days. One hundred sixty-two male and female sheep were divided into three groups (n=54 each) and were treated when FAMACHA score was 3, 4, or 5: G-EsNano 250mg kg-1 EsNano; G-Lev 7.5mg kg-1 levamisole (positive control), and G-Neg was not treated (negative control). Feces from sheep were collected to quantify the number of eggs per gram of feces (epg) and to identify nematode genera. Sheep weight gain was monitored. The epg data for each group and the average sheep weight gains were analyzed by variance analysis and compared with the Tukey’s test (P<0.05). Significant difference between the number of animals treated with EsNano and levamisole was not observed in any visit (P>0.05). The epg variation was similar in the G-EsNano and G-Lev groups on visits (P>0.05), except the second and fifth evaluation in the epg groups were significantly different (P<0.05). Haemonchus spp. was the most prevalent nematode. There was no significant weight gain in any of the treated groups (P<0.05). The combination of phytotherapy and FAMACHA can be an alternative to minimize the use of synthetic anthelmintics to control resistant GIN populations of small ruminants.
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111
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Wu S, Duan B, Zeng X, Lu A, Xu X, Wang Y, Ye Q, Zhang L. Construction of blood compatible lysine-immobilized chitin/carbon nanotube microspheres and potential applications for blood purified therapy. J Mater Chem B 2017; 5:2952-2963. [DOI: 10.1039/c7tb00101k] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel lysine-immobilized chitin/carbon nanotube microspheres are prepared with excellent bilirubin adsorption properties and good blood compatibility for blood purified therapy.
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Affiliation(s)
- Shuangquan Wu
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
- Zhongnan Hospital of Wuhan University
| | - Bo Duan
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xianpeng Zeng
- Zhongnan Hospital of Wuhan University
- Institute of Hepatobiliary Diseases of Wuhan University
- Transplant Center of Wuhan University
- Hubei Key Laboratory of Medical Technology on Transplantation
- Wuhan 430071
| | - Ang Lu
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Xiaojuan Xu
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Yanfeng Wang
- Zhongnan Hospital of Wuhan University
- Institute of Hepatobiliary Diseases of Wuhan University
- Transplant Center of Wuhan University
- Hubei Key Laboratory of Medical Technology on Transplantation
- Wuhan 430071
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University
- Institute of Hepatobiliary Diseases of Wuhan University
- Transplant Center of Wuhan University
- Hubei Key Laboratory of Medical Technology on Transplantation
- Wuhan 430071
| | - Lina Zhang
- College of Chemistry & Molecule Sciences
- Wuhan University
- Wuhan 430072
- P. R. China
- School of Chemistry and Chemical Engineering
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112
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Benghanem S, Chetouani A, Elkolli M, Bounekhel M, Benachour D. Grafting of oxidized carboxymethyl cellulose with hydrogen peroxide in presence of Cu(II) to chitosan and biological elucidation. Biocybern Biomed Eng 2017. [DOI: 10.1016/j.bbe.2016.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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113
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Wang R, Xie Y, Xiang T, Sun S, Zhao C. Direct catechol conjugation of mussel-inspired biomacromolecule coatings to polymeric membranes with antifouling properties, anticoagulant activity and cytocompatibility. J Mater Chem B 2017; 5:3035-3046. [DOI: 10.1039/c6tb03329f] [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]
Abstract
TheO-sulfated chitosan andN,O-sulfated chitosan coatings were prepared by direct catechol conjugation to enrich the biological applications of polymeric membranes.
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Affiliation(s)
- Rui Wang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yi Xie
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Tao Xiang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Shudong Sun
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Changsheng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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114
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115
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Core-shell structured ZnS-C nanoparticles with enhanced electrochemical properties for high-performance lithium-ion battery anodes. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2016.12.118] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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116
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Carvalho LCR, Queda F, Santos CVA, Marques MMB. Selective Modification of Chitin and Chitosan: En Route to Tailored Oligosaccharides. Chem Asian J 2016; 11:3468-3481. [DOI: 10.1002/asia.201601041] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Luísa C. R. Carvalho
- LAQV@REQUIMTE, Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
| | - Fausto Queda
- LAQV@REQUIMTE, Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
| | - Cátia V. Almeida Santos
- LAQV@REQUIMTE, Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
| | - M. Manuel B. Marques
- LAQV@REQUIMTE, Departamento de Química; Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
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117
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Huang X, Wang R, Lu T, Zhou D, Zhao W, Sun S, Zhao C. Heparin-Like Chitosan Hydrogels with Tunable Swelling Behavior, Prolonged Clotting Times, and Prevented Contact Activation and Complement Activation. Biomacromolecules 2016; 17:4011-4020. [DOI: 10.1021/acs.biomac.6b01386] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xuelian Huang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Rui Wang
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Ting Lu
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Dongxu Zhou
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Weifeng Zhao
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Shudong Sun
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
| | - Changsheng Zhao
- College of Polymer Science
and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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118
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LogithKumar R, KeshavNarayan A, Dhivya S, Chawla A, Saravanan S, Selvamurugan N. A review of chitosan and its derivatives in bone tissue engineering. Carbohydr Polym 2016; 151:172-188. [DOI: 10.1016/j.carbpol.2016.05.049] [Citation(s) in RCA: 328] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/24/2016] [Accepted: 05/15/2016] [Indexed: 10/21/2022]
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119
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Mendes AC, Shekarforoush E, Engwer C, Beeren SR, Gorzelanny C, Goycoolea FM, Chronakis IS. Co-assembly of chitosan and phospholipids into hybrid hydrogels. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0708] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
AbstractNovel hybrid hydrogels were formed by adding chitosan (Ch) to phospholipids (P) self-assembled particles in lactic acid. The effect of the phospholipid concentration on the hydrogel properties was investigated and was observed to affect the rate of hydrogel formation and viscoelastic properties. A lower concentration of phospholipids (0.5% wt/v) in the mixture, facilitates faster network formation as observed by Dynamic Light Scattering, with lower elastic modulus than the hydrogels formed with higher phospholipid content. The nano-porous structure of Ch/P hydrogels, with a diameter of 260±20 nm, as observed by cryo-scanning electron microscopy, facilitated the penetration of water and swelling. Cell studies revealed suitable biocompatibility of the Ch/P hydrogels that can be used within life sciences applications.
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Affiliation(s)
- Ana C. Mendes
- 1Nano-BioScience Research Group, DTU-Food, Technical University of Denmark, Søltofts plads 227, 2800 Kgs. Lyngby, Denmark
| | - Elhamalsadat Shekarforoush
- 1Nano-BioScience Research Group, DTU-Food, Technical University of Denmark, Søltofts plads 227, 2800 Kgs. Lyngby, Denmark
| | - Christoph Engwer
- 2Institute for Biology and Biotechnology of Plants (IBBP), Westfälische Wilhelms-Universität Münster, Schlossgarten 3, 48149 Münster, Germany
| | - Sophie R. Beeren
- 3DTU-Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kgs. Lyngby, Denmark
| | - Christian Gorzelanny
- 4Experimental Dermatology, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Francisco M. Goycoolea
- 2Institute for Biology and Biotechnology of Plants (IBBP), Westfälische Wilhelms-Universität Münster, Schlossgarten 3, 48149 Münster, Germany
| | - Ioannis S. Chronakis
- 1Nano-BioScience Research Group, DTU-Food, Technical University of Denmark, Søltofts plads 227, 2800 Kgs. Lyngby, Denmark
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120
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Hybrid electrospun chitosan-phospholipids nanofibers for transdermal drug delivery. Int J Pharm 2016; 510:48-56. [DOI: 10.1016/j.ijpharm.2016.06.016] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/06/2016] [Indexed: 11/20/2022]
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121
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Balan V, Redinciuc V, Tudorachi N, Verestiuc L. Biotinylated N-palmitoyl chitosan for design of drug loaded self-assembled nanocarriers. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.06.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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122
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Venkatesan B, Tumala A, Subramanian V, Vellaichamy E. Transient silencing of Npr3 gene expression improved the circulatory levels of atrial natriuretic peptides and attenuated β-adrenoceptor activation- induced cardiac hypertrophic growth in experimental rats. Eur J Pharmacol 2016; 782:44-58. [DOI: 10.1016/j.ejphar.2016.04.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 04/16/2016] [Accepted: 04/18/2016] [Indexed: 10/21/2022]
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123
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Dodi G, Pala A, Barbu E, Peptanariu D, Hritcu D, Popa M, Tamba B. Carboxymethyl guar gum nanoparticles for drug delivery applications: Preparation and preliminary in-vitro investigations. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:628-36. [DOI: 10.1016/j.msec.2016.03.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 02/09/2016] [Accepted: 03/12/2016] [Indexed: 01/05/2023]
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124
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Ummartyotin S, Pechyen C. Microcrystalline-cellulose and polypropylene based composite: A simple, selective and effective material for microwavable packaging. Carbohydr Polym 2016; 142:133-40. [DOI: 10.1016/j.carbpol.2016.01.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 01/04/2016] [Accepted: 01/09/2016] [Indexed: 10/22/2022]
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125
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Zeng Q, Qin J, Yin X, Liu H, Zhu L, Dong W, Zhang S. Preparation and hemocompatibility of electrospun O-carboxymethyl chitosan/PVA nanofibers. J Appl Polym Sci 2016. [DOI: 10.1002/app.43565] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Qinghuan Zeng
- Hainan Provincial Fine Chemical Engineering Research Center; Hainan University; Haikou Hainan 570228 People's Republic of China
| | - Jinmin Qin
- Hainan Provincial Fine Chemical Engineering Research Center; Hainan University; Haikou Hainan 570228 People's Republic of China
| | - Xueqiong Yin
- Hainan Provincial Fine Chemical Engineering Research Center; Hainan University; Haikou Hainan 570228 People's Republic of China
| | - Haifang Liu
- Affiliated Haikou Hospital, Xiangya School of Medicine central south University; Haikou Municipal People's Hospital; Haikou Hainan 570208 People's Republic of China
| | - Li Zhu
- Hainan Provincial Fine Chemical Engineering Research Center; Hainan University; Haikou Hainan 570228 People's Republic of China
| | - Wenyuan Dong
- Hainan Provincial Fine Chemical Engineering Research Center; Hainan University; Haikou Hainan 570228 People's Republic of China
| | - Song Zhang
- Hainan Provincial Fine Chemical Engineering Research Center; Hainan University; Haikou Hainan 570228 People's Republic of China
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126
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Wang X, Hu L, Li C, Gan L, He M, He X, Tian W, Li M, Xu L, Li Y, Chen Y. Improvement in physical and biological properties of chitosan/soy protein films by surface grafted heparin. Int J Biol Macromol 2016; 83:19-29. [DOI: 10.1016/j.ijbiomac.2015.11.052] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 11/18/2015] [Accepted: 11/19/2015] [Indexed: 12/25/2022]
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127
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Poly Lactic Acid Fibre Based Biodegradable Stents and Their Functionalization Techniques. RILEM BOOKSERIES 2016. [DOI: 10.1007/978-94-017-7515-1_25] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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128
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Anjaneyulu U, Swaroop VK, Vijayalakshmi U. Preparation and characterization of novel Ag doped hydroxyapatite–Fe3O4–chitosan hybrid composites and in vitro biological evaluations for orthopaedic applications. RSC Adv 2016. [DOI: 10.1039/c5ra21479c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphical abstract of novel 5%@Ag:HAP–Fe3O4–CS hybrid composites and biological investigations.
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Affiliation(s)
- U. Anjaneyulu
- Materials Chemistry Division
- School of Advanced Sciences
- VIT University
- India
| | - V. K. Swaroop
- Biomedical Science Division
- School of Biosciences and Technology
- VIT University
- Vellore -632014
- India
| | - U. Vijayalakshmi
- Materials Chemistry Division
- School of Advanced Sciences
- VIT University
- India
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129
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Dragostin OM, Samal SK, Lupascu F, Pânzariu A, Dubruel P, Lupascu D, Tuchilus C, Vasile C, Profire L. Development and Characterization of Novel Films Based on Sulfonamide-Chitosan Derivatives for Potential Wound Dressing. Int J Mol Sci 2015; 16:29843-55. [PMID: 26694354 PMCID: PMC4691147 DOI: 10.3390/ijms161226204] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to develop new films based on chitosan functionalized with sulfonamide drugs (sulfametoxydiazine, sulfadiazine, sulfadimetho-xine, sulfamethoxazol, sulfamerazine, sulfizoxazol) in order to enhance the biological effects of chitosan. The morphology and physical properties of functionalized chitosan films as well the antioxidant effects of sulfonamide-chitosan derivatives were investigated. The chitosan-derivative films showed a rough surface and hydrophilic properties, which are very important features for their use as a wound dressing. The film based on chitosan-sulfisoxazol (CS-S6) showed the highest swelling ratio (197%) and the highest biodegradation rate (63.04%) in comparison to chitosan film for which the swelling ratio was 190% and biodegradation rate was only 10%. Referring to the antioxidant effects the most active was chitosan-sulfamerazine (CS-S5) which was 8.3 times more active than chitosan related to DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging ability. This compound showed also a good ferric reducing power and improved total antioxidant capacity.
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Affiliation(s)
- Oana Maria Dragostin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 University Street, Iasi 700115, Romania.
| | - Sangram Keshari Samal
- Laboratory of General Biochemistry and Physical Pharmacy, Centre for Nano- and Biophotonics, Ghent University, Ottergemsesteenweg 460, Ghent 9000, Belgium.
| | - Florentina Lupascu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 University Street, Iasi 700115, Romania.
| | - Andreea Pânzariu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 University Street, Iasi 700115, Romania.
| | - Peter Dubruel
- Polymer Chemistry & Biomaterials Research Group, Ghent University, Krijgslaan 281, S4-Bis, Ghent 9000, Belgium.
| | - Dan Lupascu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 University Street, Iasi 700115, Romania.
| | - Cristina Tuchilus
- Department of Microbiology, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 University Street, Iasi 700115, Romania.
| | - Cornelia Vasile
- Department of Physical Chemistry of Polymers, "Petru Poni" Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, Iasi 700487, Romania.
| | - Lenuta Profire
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, "Grigore T. Popa" University of Medicine and Pharmacy Iasi, 16 University Street, Iasi 700115, Romania.
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130
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Ignjatović N, Wu V, Ajduković Z, Mihajilov-Krstev T, Uskoković V, Uskoković D. Chitosan-PLGA polymer blends as coatings for hydroxyapatite nanoparticles and their effect on antimicrobial properties, osteoconductivity and regeneration of osseous tissues. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 60:357-364. [PMID: 26706541 DOI: 10.1016/j.msec.2015.11.061] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/04/2015] [Accepted: 11/23/2015] [Indexed: 11/26/2022]
Abstract
Composite biomaterials comprising nanostructured hydroxyapatite (HAp) have an enormous potential for natural bone tissue reparation, filling and augmentation. Chitosan (Ch) as a naturally derived polymer has many physicochemical and biological properties that make it an attractive material for use in bone tissue engineering. On the other hand, poly-D,L-lactide-co-glycolide (PLGA) is a synthetic polymer with a long history of use in sustained drug delivery and tissue engineering. However, while chitosan can disrupt the cell membrane integrity and may induce blood thrombosis, PLGA releases acidic byproducts that may cause tissue inflammation and interfere with the healing process. One of the strategies to improve the biocompatibility of Ch and PLGA is to combine them with compounds that exhibit complementary properties. In this study we present the synthesis and characterization, as well as in vitro and in vivo analyses of a nanoparticulate form of HAp coated with two different polymeric systems: (a) Ch and (b) a Ch-PLGA polymer blend. Solvent/non-solvent precipitation and freeze-drying were used for synthesis and processing, respectively, whereas thermogravimetry coupled with mass spectrometry was used for phase identification purposes in the coating process. HAp/Ch composite particles exhibited the highest antimicrobial activity against all four microbial strains tested in this work, but after the reconstruction of the bone defect they also caused inflammatory reactions in the newly formed tissue where the defect had lain. Coating HAp with a polymeric blend composed of Ch and PLGA led to a decrease in the reactivity and antimicrobial activity of the composite particles, but also to an increase in the quality of the newly formed bone tissue in the reconstructed defect area.
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Affiliation(s)
- Nenad Ignjatović
- Institute of Technical Sciences of the Serbian Academy of Science and Arts, Knez Mihailova 35/IV, P.O. Box 377, 11000 Belgrade, Serbia
| | - Victoria Wu
- Advanced Materials and Nanobiotechnology Laboratory, Department of Bioengineering, College of Engineering and College of Medicine, University of Illinois at Chicago, Chicago, USA
| | - Zorica Ajduković
- University of Niš, Faculty of Medicine, Clinic of Stomatology, Department of Prosthodontics, Bulevar Zorana Djindjica 81, 18000 Niš, Serbia
| | - Tatjana Mihajilov-Krstev
- University of Niš, Faculty of Science and Mathematics, Department of Biology and Ecology, Višegradska 33, P. O. Box 224, 18000 Niš, Serbia
| | - Vuk Uskoković
- Advanced Materials and Nanobiotechnology Laboratory, Department of Bioengineering, College of Engineering and College of Medicine, University of Illinois at Chicago, Chicago, USA
| | - Dragan Uskoković
- Institute of Technical Sciences of the Serbian Academy of Science and Arts, Knez Mihailova 35/IV, P.O. Box 377, 11000 Belgrade, Serbia.
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131
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Upadhyay J, Kumar A, Gupta K, Mandal M. Investigation of physical and biological properties of polypyrrole nanotubes–chitosan nanocomposites. Carbohydr Polym 2015; 132:481-9. [DOI: 10.1016/j.carbpol.2015.06.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Revised: 05/12/2015] [Accepted: 06/08/2015] [Indexed: 12/28/2022]
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132
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Wang F, Su XX, Guo YC, Li A, Zhang YC, Zhou H, Qiao H, Guan LM, Zou M, Si XQ. Bone regeneration by nanohydroxyapatite/chitosan/poly(lactide-co-glycolide) scaffolds seeded with human umbilical cord mesenchymal stem cells in the calvarial defects of the nude mice. BIOMED RESEARCH INTERNATIONAL 2015; 2015:261938. [PMID: 26550565 PMCID: PMC4621339 DOI: 10.1155/2015/261938] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 09/11/2015] [Accepted: 09/15/2015] [Indexed: 11/29/2022]
Abstract
In the preliminary study, we have found an excellent osteogenic property of nanohydroxyapatite/chitosan/poly(lactide-co-glycolide) (nHA/CS/PLGA) scaffolds seeded with human umbilical cord mesenchymal stem cells (hUCMSCs) in vitro and subcutaneously in the nude mice. The aim of this study was to further evaluate the osteogenic capacity of nHA/CS/PLGA scaffolds seeded with hUCMSCs in the calvarial defects of the nude mice. Totally 108 nude mice were included and divided into 6 groups: PLGA scaffolds + hUCMSCs; nHA/PLGA scaffolds + hUCMSCs; CS/PLGA scaffolds + hUCMSCs; nHA/CS/PLGA scaffolds + hUCMSCs; nHA/CS/PLGA scaffolds without seeding; the control group (no scaffolds) (n = 18). The scaffolds were implanted into the calvarial defects of nude mice. The amount of new bones was evaluated by fluorescence labeling, H&E staining, and Van Gieson staining at 4 and 8 weeks, respectively. The results demonstrated that the amount of new bones was significantly increased in the group of nHA/CS/PLGA scaffolds seeded with hUCMSCs (p < 0.01). On the basis of previous studies in vitro and in subcutaneous implantation of the nude mice, the results revealed that the nHA and CS also enhanced the bone regeneration by nHA/CS/PLGA scaffolds seeded with hUCMSCs in the calvarial defects of the nude mice at early stage.
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Affiliation(s)
- Fei Wang
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Xiao-Xia Su
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Yu-Cheng Guo
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Ang Li
- Research Center for Stomatology, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Yin-Cheng Zhang
- Department of Oral and Maxillofacial Surgery, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Hong Zhou
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Hu Qiao
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Li-Min Guan
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Min Zou
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
| | - Xin-Qin Si
- Department of Orthodontics, Stomatological Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an 710004, China
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133
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Bercea M, Bibire EL, Morariu S, Teodorescu M, Carja G. pH influence on rheological and structural properties of chitosan/poly(vinyl alcohol)/layered double hydroxide composites. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.07.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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134
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Jiang B, Perrin L, Kats D, Meade T, Ameer G. Enabling non-invasive assessment of an engineered endothelium on ePTFE vascular grafts without increasing oxidative stress. Biomaterials 2015; 69:110-20. [PMID: 26283158 DOI: 10.1016/j.biomaterials.2015.07.064] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 07/29/2015] [Accepted: 07/31/2015] [Indexed: 12/22/2022]
Abstract
Magnetic resonance imaging (MRI) in combination with contrast enhancement is a potentially powerful tool to non-invasively monitor cell distribution in tissue engineering and regenerative medicine. The most commonly used contrast agent for cell labeling is super paramagnetic iron oxide nanoparticles (SPIONs). However, uptake of SPIONs triggers the production of reactive oxygen species (ROS) in cells often leading to a pro-inflammatory phenotype. The objective of this study was to develop a labeling system to non-invasively visualize an engineered endothelium in vascular grafts without creating excessive oxidative stress. Specifically, we investigated: (1) chitosan-coated SPIONs (CSPIONs) as an antioxidant contrast agent for contrast enhancement, and (2) poly(1,8-octamethylene citrate) (POC) as an antioxidant interface to support cell adhesion and function of labeled cells on the vascular graft. While SPION-labeled endothelial cells (ECs) experienced elevated ROS formation and altered cell morphology, CSPION-labeled ECs cultured on POC-coated surfaces mitigated SPION-induced ROS formation and maintained EC morphology, phenotype, viability and functions. A monolayer of labeled ECs exhibited sufficient contrast with T2-weighed MR imaging. CSPION labeling of endothelial cells in combination with coating the graft wall with POC allows non-invasive monitoring of an engineered endothelium on ePTFE grafts without increasing oxidative stress.
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Affiliation(s)
- Bin Jiang
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Louisiane Perrin
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, USA
| | - Dina Kats
- Interdisciplinary Biological Sciences (IBiS) Program, Northwestern University, Evanston, IL 60201, USA
| | - Thomas Meade
- Department of Chemistry, Northwestern University, Evanston, IL 60201, USA
| | - Guillermo Ameer
- Biomedical Engineering Department, Northwestern University, Evanston, IL 60201, USA; Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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135
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Ribeiro WLC, Camurça-Vasconcelos ALF, Macedo ITF, dos Santos JML, de Araújo-Filho JV, Ribeiro JDC, Pereira VDA, Viana DDA, de Paula HCB, Bevilaqua CML. In vitro effects of Eucalyptus staigeriana nanoemulsion on Haemonchus contortus and toxicity in rodents. Vet Parasitol 2015; 212:444-7. [PMID: 26233731 DOI: 10.1016/j.vetpar.2015.07.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 07/14/2015] [Accepted: 07/18/2015] [Indexed: 01/22/2023]
Abstract
Strategies for controlling gastrointestinal nematodes have been developed based on the use of numerous alternative methods, including the use of phytotherapy. New formulations of essential oils with anthelmintic activity have been proposed as a means to optimize their biological effects. Thus, the objective of this study was to formulate a nanoemulsion to optimize the nematicide effect of Eucalyptus staigeriana essential oil (EsEO). Initially, physico-chemical analyses were performed to verify the stability of the E. staigeriana nanoemulsion (EsNano). In vitro tests were conducted to evaluate the ovicidal and larvicidal activities of both EsNano and EsEO against Haemonchus contortus, and toxicology tests were then performed on rodents. The EsEO content in the nanoemulsion was 36.4% (v/v), and the mean particle size was 274.3 nm. EsNano and EsEO inhibited larval hatching by 99% and 96.3% at 1 and 2mg/ml concentrations, respectively, and inhibited larval development by 96.3% and 97.3% at 8 mg/ml concentrations. The acute toxicity test revealed that the EsNano and EsEO doses required to kill 50% of the mice (LD50) were 1,603.9 and 3,495.9 mg/ml, respectively. EsNano did not alter the hematological parameters in the rats after treatment.
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136
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Sampaio CDG, Frota LS, Magalhães HS, Dutra LM, Queiroz DC, Araújo RS, Becker H, de Souza JR, Ricardo NM, Trevisan MT. Chitosan/mangiferin particles for Cr(VI) reduction and removal. Int J Biol Macromol 2015; 78:273-9. [DOI: 10.1016/j.ijbiomac.2015.03.038] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 02/27/2015] [Accepted: 03/15/2015] [Indexed: 11/27/2022]
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137
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Chitin and chitosan from Brazilian Atlantic Coast: Isolation, characterization and antibacterial activity. Int J Biol Macromol 2015; 80:107-20. [PMID: 26093316 DOI: 10.1016/j.ijbiomac.2015.06.027] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 06/06/2015] [Accepted: 06/13/2015] [Indexed: 01/16/2023]
Abstract
Chitin and chitosan were obtained by chemical treatments of shrimp shells. Different particle sizes (50-1000 μm) of the raw material were used to study their effect on size distribution, demineralization, deproteinization and deacetylation of chitin and chitosan isolation process. The particle size in the range of 800-1000 μm was selected to isolate chitin, which was achieved by measuring nitrogen, protein, ash, and yield %. Hydrochloric acid (5%, v/v) was optimized in demineralization step to remove the minerals from the starting material. Aqueous solution of sodium hydroxide (5%, w/v) at 90 °C for (20 h) was used in deproteinization step to remove the protein. Pure chitin was consequently impregnated into high concentration of sodium hydroxide (50%) for 3.5 h at 90 °C to remove the acetyl groups in order to form high pure chitosan. The degree of deacetylation (DDA) of chitosan was controlled and evaluated by different analytical tools. The chemical structure of chitin and chitosan was confirmed by elemental analysis, ATR-FTIR, H/C NMR, XRD, SEM, UV-Vis spectroscopy, TGA, and acid-base titration. The isolated chitin and chitosan from shrimp shell showed excellent antibacterial activity against Gram (-ve) bacteria (Escherichia coli) comparing with commercial biopolymers.
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138
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Shah R, Kronekova Z, Zahoranová A, Roller L, Saha N, Saha P, Kronek J. In vitro study of partially hydrolyzed poly(2-ethyl-2-oxazolines) as materials for biomedical applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:157. [PMID: 25783502 DOI: 10.1007/s10856-015-5485-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
Polymers based on 2-oxazoline, such as poly(2-ethyl-2-oxazolines) (PETOx), are considered to be a type of 'pseudopeptide' with the ability to form novel biomaterials. The hydrolysis of PETOx was carried out to evaluate its use in biomedical applications. In the present work, PETOx samples with a range of molar masses were prepared by living cationic polymerization. Hydrolysis was carried out at time intervals ranging from 15 to 180 min to prepare copolymers with different amounts of ethylene imine units. (1)H NMR spectroscopy was used to identify the structure of the hydrolyzed polymers. The dependence of in vitro cell viability on the degree of hydrolysis was determined using three different model cell lines, namely, mouse embryonic 3T3 fibroblasts, pancreatic βTC3 cells, and mouse lymphoid macrophages P388.D1. It was demonstrated that increasing the degree of hydrolysis decreased cell viability for all cell types. Fibroblast cells displayed the highest tolerance; additionally, the effect of polymer size showed no observable significance. Macrophage cells, immune system representatives, displayed the highest sensitivity to contact with hydrolyzed PETOx. The effect of polymer hydrolysis, polymer concentration and the incubation time on cell viability was experimentally observed. Confocal laser-scanning microscopy provided evidence of cellular uptake of pyrene-labeled (co)polymers.
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Affiliation(s)
- Rushita Shah
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, Zlin, 760 01, Czech Republic
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139
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Padilla-Rodríguez A, Hernández-Viezcas JA, Peralta-Videa JR, Gardea-Torresdey JL, Perales-Pérez O, Román-Velázquez FR. Synthesis of protonated chitosan flakes for the removal of vanadium(III, IV and V) oxyanions from aqueous solutions. Microchem J 2015. [DOI: 10.1016/j.microc.2014.07.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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140
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Sarvaiya J, Agrawal Y. Chitosan as a suitable nanocarrier material for anti-Alzheimer drug delivery. Int J Biol Macromol 2015; 72:454-65. [DOI: 10.1016/j.ijbiomac.2014.08.052] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/24/2014] [Accepted: 08/28/2014] [Indexed: 11/25/2022]
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141
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Wei H, Han L, Tang Y, Ren J, Zhao Z, Jia L. Highly flexible heparin-modified chitosan/graphene oxide hybrid hydrogel as a super bilirubin adsorbent with excellent hemocompatibility. J Mater Chem B 2015; 3:1646-1654. [DOI: 10.1039/c4tb01673d] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly flexible heparin-modified chitosan/graphene oxide hydrogel was prepared using lyophilization–neutralization–modification as a blood-compatible adsorbent for bilirubin removal.
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Affiliation(s)
- Houliang Wei
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- PR China
| | - Lulu Han
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- PR China
| | - Yongchao Tang
- Carbon Research Laboratory
- State Key Lab of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116023
| | - Jun Ren
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- PR China
| | - Zongbin Zhao
- Carbon Research Laboratory
- State Key Lab of Fine Chemicals
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116023
| | - Lingyun Jia
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- PR China
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142
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Levitz SM, Huang H, Ostroff GR, Specht CA. Exploiting fungal cell wall components in vaccines. Semin Immunopathol 2014; 37:199-207. [PMID: 25404118 DOI: 10.1007/s00281-014-0460-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 11/04/2014] [Indexed: 12/30/2022]
Abstract
Innate recognition of fungi leads to strong adaptive immunity. Investigators are trying to exploit this observation in vaccine development by combining antigens with evolutionarily conserved fungal cell wall carbohydrates to induce protective responses. Best studied is β-1,3-glucan, a glycan that activates complement and is recognized by dectin-1. Administration of antigens in association with β-1,3-glucan, either by direct conjugation or complexed in glucan particles, results in robust humoral and cellular immune responses. While the host has a host of mannose receptors, responses to fungal mannoproteins generally are amplified if cells are cooperatively stimulated with an additional danger signal such as a toll-like receptor agonist. Chitosan, a polycationic homopolymer of glucosamine manufactured by the deacetylation of chitin, is being studied as an adjuvant in DNA and protein-based vaccines. It appears particularly promising in mucosal vaccines. Finally, universal and organism-specific fungal vaccines have been formulated by conjugating fungal cell wall glycans to carrier proteins. A major challenge will be to advance these experimental findings so that at risk patients can be protected.
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Affiliation(s)
- Stuart M Levitz
- Department of Medicine (SML, HH, CAS) and Program in Molecular Medicine (GRO), University of Massachusetts Medical School, Worcester, MA, 01605, USA,
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143
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Tang Y, Xie L, Sai M, Xu N, Ding D. Preparation and antibacterial activity of quaternized chitosan with iodine. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 48:1-4. [PMID: 25579889 DOI: 10.1016/j.msec.2014.11.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 09/21/2014] [Accepted: 11/06/2014] [Indexed: 01/19/2023]
Abstract
Chitosan (CTS) is a natural polymer with active groups such as -NH2 which can be functionalized to introduce new positively charged N-atoms and protonated amino group for better use. In this study, to improve the stability of iodine, a novel complex (CTS-CTA-I2) was prepared by mixing N-(2-hydroxy) propyl-3-trimethylammonium chitosan chloride (CTS-CTA) with iodine in ethanol solution. The CTS-CTA-I2 was characterized by Fourier transform infrared spectra (FTIR), Ultraviolet and visible (UV-vis) spectra and thermal gravimetric analysis (TG). Besides, the interaction of iodine with CTS-CTA was also studied. The mole ratio of CTS-CTA with iodine was measured by iodometric titration method and the max mole ratio of CTS-CTA with iodine was 1:1.33. The antimicrobial activity of CTS, CTS-CTA and CTS-CTS-I2 complexes was investigated against Escherichia coli and Staphylococcus aureus and the antibacterial property of CTS-CTA-I2 was superior to CTS-CTA.
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Affiliation(s)
- Yang Tang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Road 333, Shanghai 201620, China
| | - Linlin Xie
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Road 333, Shanghai 201620, China
| | - Mingze Sai
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Road 333, Shanghai 201620, China
| | - Ningning Xu
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Road 333, Shanghai 201620, China
| | - Derun Ding
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Longteng Road 333, Shanghai 201620, China.
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144
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Ghosal K, Latha MS, Thomas S. Poly(ester amides) (PEAs) – Scaffold for tissue engineering applications. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.08.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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145
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Costa E, Silva S, Costa M, Pereira M, Campos D, Odila J, Madureira A, Cardelle-Cobas A, Tavaria F, Rodrigues A, Pintado M. Chitosan mouthwash: Toxicity and in vivo validation. Carbohydr Polym 2014; 111:385-92. [DOI: 10.1016/j.carbpol.2014.04.046] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 04/09/2014] [Accepted: 04/11/2014] [Indexed: 11/29/2022]
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