51
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Li J, Si Y, Zhao C, He J, Sun G, Huang Y. Spontaneous and efficient adsorption of lysozyme from aqueous solutions by naturally polyanion gel beads. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:130-138. [DOI: 10.1016/j.msec.2017.03.092] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/07/2017] [Accepted: 03/12/2017] [Indexed: 01/10/2023]
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52
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Lakkakula JR, Matshaya T, Krause RWM. Cationic cyclodextrin/alginate chitosan as 5-fluorouracil drug delivery system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:169-177. [DOI: 10.1016/j.msec.2016.08.073] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 08/03/2016] [Accepted: 08/27/2016] [Indexed: 11/24/2022]
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53
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Ivancic A. Recent Trends in Alginate, Chitosan and Alginate-Chitosan Antimicrobial Systems. CHEMISTRY JOURNAL OF MOLDOVA 2016. [DOI: 10.19261/cjm.2016.11(2).03] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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54
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Wu QX, Xu X, Xie Q, Tong WY, Chen Y. Evaluation of chitosan hydrochloride-alginate as enteric micro-probiotic-carrier with dual protective barriers. Int J Biol Macromol 2016; 93:665-671. [PMID: 27632950 DOI: 10.1016/j.ijbiomac.2016.09.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 09/08/2016] [Accepted: 09/11/2016] [Indexed: 10/21/2022]
Abstract
In this study, the cells-free and cells-loaded chitosan hydrochloride-alginate (CHC-Alg) microcapsules were firstly fabricated with polyelectrolyte complexes via an orifice-polymerization method. Scanning electron microscope images showed that the CHC-Alg microcapsules had a typical shell-core structure and the model probiotic cells (Bacillus licheniformis) were embedded in the core in cells-loaded microcapsules. The microcapsules prepared had good thermal stability and moisture property (3.89%). Cells survival and release studies showed that the number of probiotic cells released from the cells-loaded microcapsules (approx. 6.36logCFUml-1) was 6.19logCFUml-1 when they were performed in the simulated gastric fluid (SGF, pH 2.0) for 1h and subsequently in the simulated intestinal fluid (SIF, 0.3%) for 4h. The CHC-Alg microcapsules with favorable swelling performances were helpful to permeate the harsh acid to protect the cells in the SGF (pH 2.0). The CHC-Alg microcapsules effectively protected the model probiotic cells, which was attributed to the "dual protective barriers" of the shell-core structure, that is, the primary barrier of the Alg hydrogel layer formed with a compact polymer matrix and the secondary barrier of the PEC film formed on the surface. The microcapsules prepared could be used as an enteric micro-probiotic-carrier for designing potential probiotic delivery systems.
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Affiliation(s)
- Qing-Xi Wu
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
| | - Xin Xu
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
| | - Qiu Xie
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
| | - Wang-Yu Tong
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China.
| | - Yan Chen
- Key Laboratory of Eco-engineering and Biotechnology of Anhui Province, Integrated Biotechnology Laboratory, School of Life Sciences, Anhui University, Hefei 230601, China
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55
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Mokhtarzadeh A, Alibakhshi A, Hejazi M, Omidi Y, Ezzati Nazhad Dolatabadi J. Bacterial-derived biopolymers: Advanced natural nanomaterials for drug delivery and tissue engineering. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.06.013] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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56
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Rochani AK, Balasubramanian S, Ravindran Girija A, Raveendran S, Borah A, Nagaoka Y, Nakajima Y, Maekawa T, Kumar DS. Dual mode of cancer cell destruction for pancreatic cancer therapy using Hsp90 inhibitor loaded polymeric nano magnetic formulation. Int J Pharm 2016; 511:648-658. [PMID: 27469073 DOI: 10.1016/j.ijpharm.2016.07.048] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/02/2016] [Accepted: 07/21/2016] [Indexed: 02/03/2023]
Abstract
Heat Shock Protein 90 (Hsp90) has been extensively explored as a potential drug target for cancer therapies. 17- N-allylamino- 17-demethoxygeldanamycin (17AAG) was the first Hsp90 inhibitor to enter clinical trials for cancer therapy. However, native drug is being shown to have considerable anticancer efficacy against pancreatic cancer when used in combination therapy regime. Further, magnetic hyperthermia has shown to have promising effects against pancreatic cancer in combination with known cyto-toxic drugs under both target and non-targeted scenarios. Hence, in order to enhance the efficacy of 17AAG against pancreatic cancer, we developed poly (lactic-co-glycolic acid) (PLGA) coated, 17AAG and Fe3O4 loaded magnetic nanoparticle formulations by varying the relative concentration of polymer. We found that polymer concentration affects the magnetic strength and physicochemical properties of formulation. We were also able to see that our aqueous dispensable formulations were able to provide anti-pancreatic cancer activity for MIA PaCa-2 cell line in dose and time dependent manner in comparison to mice fibroblast cell lines (L929). Moreover, the in-vitro magnetic hyperthermia against MIA PaCa-2 provided proof principle that our 2-in-1 particles may work against cancer cell lines effectively.
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Affiliation(s)
- Ankit K Rochani
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Sivakumar Balasubramanian
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Aswathy Ravindran Girija
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Sreejith Raveendran
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Ankita Borah
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Yutaka Nagaoka
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Yoshikata Nakajima
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - Toru Maekawa
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan
| | - D Sakthi Kumar
- Bio Nano Electronics Research Centre, Graduate School of Interdisciplinary New Science, Toyo University, Kawagoe, Saitama 350-8585, Japan.
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57
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Pati R, Sahu R, Panda J, Sonawane A. Encapsulation of zinc-rifampicin complex into transferrin-conjugated silver quantum-dots improves its antimycobacterial activity and stability and facilitates drug delivery into macrophages. Sci Rep 2016; 6:24184. [PMID: 27113139 PMCID: PMC4845008 DOI: 10.1038/srep24184] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 03/21/2016] [Indexed: 02/02/2023] Open
Abstract
In order to improve the chemotherapy of tuberculosis, there is an urgent need to enhance the efficacy of existing agents and also to develop more efficient drug delivery systems. Here, we synthesized a novel anti-TB drug complex consisting of zinc and rifampicin (Zn-RIF), and encapsulated it into transferrin-conjugated silver quantum-dots (Zn-RIF-Tf-QD) to improve delivery in macrophages. Successful synthesis of Zn-RIF and Zn-RIF-Tf-QD was confirmed by UV/Vis-spectroscopy, TEM, FTIR, photoluminescence, XRD, XPS, and NMR. The sizes of silver QDs and transferrin-conjugated QDs were found to be in the range of 5-20 nm. Activity assays showed that Zn-RIF-Tf-QD exhibited 10-fold higher antibacterial activity against Mycobacterium smegmatis and Mycobacterium bovis-BCG as compared to Zn-RIF, RIF and Zn. Immunofluorescence studies showed that Zn-RIF-Tf-QD-conjugates were actively endocytosed by macrophages and dendritic cells, but not by lung epithelial cells. Treatment with Zn-RIF-Tf-QD efficiently killed mycobacteria residing inside macrophages without exhibiting cytotoxicity and genotoxicity. Moreover, the conjugates remained stable for upto 48 h, were taken up into the late endosomal compartment of macrophages, and released the drug in a sustainable manner. Our data demonstrate that Zn-RIF-Tf-QDs have a great potential as anti-TB drugs. In addition, transferrin-conjugated QDs may constitute an effective drug delivery system for tuberculosis therapy.
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Affiliation(s)
- Rashmirekha Pati
- School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India
| | - Rojalin Sahu
- School of Applied Sciences, Campus-3, KIIT University, Bhubaneswar, Orissa-751024, India
| | - Jagannath Panda
- School of Applied Sciences, Campus-3, KIIT University, Bhubaneswar, Orissa-751024, India
| | - Avinash Sonawane
- School of Biotechnology, Campus-11, KIIT University, Bhubaneswar, Orissa-751024, India
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Sodium alginate as a potential carrier in solid dispersion formulations to enhance dissolution rate and apparent water solubility of BCS II drugs. Carbohydr Polym 2016; 137:350-359. [DOI: 10.1016/j.carbpol.2015.10.070] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 10/01/2015] [Accepted: 10/21/2015] [Indexed: 11/20/2022]
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59
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Wu QX, Lin DQ, Yao SJ. Fabrication and formation studies on single-walled CA/NaCS-WSC microcapsules. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:909-915. [DOI: 10.1016/j.msec.2015.10.090] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 10/03/2015] [Accepted: 10/29/2015] [Indexed: 12/13/2022]
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60
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Zhao Z, Xie X, Wang Z, Tao Y, Niu X, Huang X, Liu L, Li Z. Immobilization of Lactobacillus rhamnosus in mesoporous silica-based material: An efficiency continuous cell-recycle fermentation system for lactic acid production. J Biosci Bioeng 2016; 121:645-651. [PMID: 26803707 DOI: 10.1016/j.jbiosc.2015.11.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/29/2015] [Accepted: 11/06/2015] [Indexed: 11/18/2022]
Abstract
Lactic acid bacteria immobilization methods have been widely used for lactic acid production. Until now, the most common immobilization matrix used is calcium alginate. However, Ca-alginate gel disintegrated during lactic acid fermentation. To overcome this deficiency, we developed an immobilization method in which Lactobacillus rhamnosus cells were successfully encapsulated into an ordered mesoporous silica-based material under mild conditions with a high immobilization efficiency of 78.77% by using elemental analysis. We also optimized the cultivation conditions of the immobilized L. rhamnosus and obtained a high glucose conversion yield of 92.4%. Furthermore, L. rhamnosus encapsulated in mesoporous silica-based material exhibited operational stability during repeated fermentation processes and no decrease in lactic acid production up to 8 repeated batches.
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Affiliation(s)
- Zijian Zhao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China; State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China
| | - Xiaona Xie
- The First Hospital of Jilin University, 71 Xinmin Street, Changchun 130021, Jilin Province, PR China
| | - Zhi Wang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China
| | - Yanchun Tao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China
| | - Xuedun Niu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China
| | - Xuri Huang
- State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China
| | - Li Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China
| | - Zhengqiang Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130021, Jilin Province, PR China.
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61
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Valladares GA, González Audino P, Strumia MC. Preparation and evaluation of alginate/chitosan microspheres containing pheromones for pest control ofMegaplatypus mutatusChapuis (Platypodinae: Platypodidae). POLYM INT 2015. [DOI: 10.1002/pi.5049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gabriela A Valladares
- IMBIV-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas; Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria; X5000HUA Córdoba Argentina
| | - Paola González Audino
- CIPEIN-CONICET; J. B. de La Salle 4397 B1603ALO Villa Martelli Buenos Aires Argentina
| | - Miriam C Strumia
- IMBIV-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas; Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria; X5000HUA Córdoba Argentina
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62
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63
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Natrajan D, Srinivasan S, Sundar K, Ravindran A. Formulation of essential oil-loaded chitosan–alginate nanocapsules. J Food Drug Anal 2015; 23:560-568. [PMID: 28911716 PMCID: PMC9351798 DOI: 10.1016/j.jfda.2015.01.001] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 01/22/2015] [Accepted: 01/26/2015] [Indexed: 12/20/2022] Open
Abstract
Naturally occurring polymers such as alginate (AL) and chitosan (CS) are widely used in biomedical and pharmaceutical fields in various forms such as nanoparticles, capsules, and emulsions. These polymers have attractive applications in drug delivery because of their biodegradability, biocompatibility, and nontoxic nature. The pharmaceutical applications of essential oils such as turmeric oil and lemongrass oil are well-known, and their active components, arturmerone and citral, respectively, are known for their antibacterial, antifungal, antioxidant, antimutagenic, and anticarcinogenic properties. However, these essential oils are unstable, volatile, and insoluble in water, which limits their use for new formulations. Therefore, this study focuses on developing a CS–AL nanocarrier for the encapsulation of essential oils. The effects of process parameters such as the effect of heat and the concentrations of AL and CS were investigated. Various physicochemical characterization techniques such as scanning electron microscopy, Fourier transform infrared spectroscopy, and ultraviolet–visible spectroscopy were performed. Results of characterization studies showed that 0.3 mg/mL AL and 0.6 mg/mL CS produced minimum-sized particles (<300 nm) with good stability. It was also confirmed that the oil-loaded nanocapsules were hemocompatible, suggesting their use for future biomedical and pharmaceutical applications. Furthermore, the antiproliferative activity of turmeric oil- and lemongrass oil-loaded nanocapsules was estimated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay in A549 cell lines and it was found that both the nanoformulations had significant antiproliferative properties than the bare oil.
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Affiliation(s)
- Dheebika Natrajan
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur 613401, Tamil Nadu, India
| | - Sharmila Srinivasan
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur 613401, Tamil Nadu, India
| | - K Sundar
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur 613401, Tamil Nadu, India
| | - Aswathy Ravindran
- Center for Nanotechnology and Advanced Biomaterials (CeNTAB), School of Chemical and Biotechnology, SASTRA University, Tirumalaisamudram, Thanjavur 613401, Tamil Nadu, India.
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64
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Lai F, Lin B, Mo F, Xu C, Lin M. Novel Composite Microparticles of Alginate Coated with Chitosan for Controlled Release and Protection of Ascorbic Acid. ADVANCES IN POLYMER TECHNOLOGY 2015. [DOI: 10.1002/adv.21574] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Fengjiao Lai
- College of Chemistry and Chemical Engineering; Guangxi University; Nanning People's Republic of China
| | - Baofeng Lin
- College of Chemistry and Chemical Engineering; Guangxi University; Nanning People's Republic of China
| | - Fang Mo
- College of Chemistry and Chemical Engineering; Guangxi University; Nanning People's Republic of China
| | - Chuanhui Xu
- College of Chemistry and Chemical Engineering; Guangxi University; Nanning People's Republic of China
| | - Minjie Lin
- College of Chemistry and Chemical Engineering; Guangxi University; Nanning People's Republic of China
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65
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Zou Q, Li J, Li Y. Preparation and characterization of vanillin-crosslinked chitosan therapeutic bioactive microcarriers. Int J Biol Macromol 2015; 79:736-47. [PMID: 26051343 DOI: 10.1016/j.ijbiomac.2015.05.037] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 05/14/2015] [Accepted: 05/21/2015] [Indexed: 02/05/2023]
Abstract
Chitosan microspheres with diameter of 14.3-48.5 μm were prepared by emulsion method and using natural vanillin as cross-linking agent. The surface morphology and microstructure of the microspheres were characterized by scanning electron microscopy, X-ray diffraction and Fourier-transform infrared spectroscopy, etc. The hollow microspheres showed a well-defined spherical shape with median diameter of 30.3 μm and possessed a uniform surface with micro-wrinkles, which is in favor of the drug release. Interpenetrating network cross-linking mechanism might result from the Schiff base reaction and the acetalization of hydroxyl and carbonyl between chitosan and vanillin. Berberine, as a model drug, was loaded in the microspheres and released in a sustainable manner. The drug loading ratio could change from 9.16% to 29.70% corresponding to the entrapment efficiency of 91.61% to 74.25%. In vitro cell culture study using MG63 cells and in vivo implantation clearly showed that the microspheres could provide favorable cell attachment and biocompatibility. The results confirm that the drug-loaded vanillin-crosslinked chitosan microspheres could be a worthy candidate either as carriers of drugs and cells, or as therapeutic matrix for bone repair and regeneration.
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Affiliation(s)
- Qin Zou
- Research Center for Nano-Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, China
| | - Junfeng Li
- Department of Materials Science & Engineering, Chengdu University of Technology, Chengdu 610059, China
| | - Yubao Li
- Research Center for Nano-Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, China.
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66
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Yang W, Xu C, Liu F, Sun C, Yuan F, Gao Y. Fabrication mechanism and structural characteristics of the ternary aggregates by lactoferrin, pectin, and (-)-epigallocatechin gallate using multispectroscopic methods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5046-5054. [PMID: 25955032 DOI: 10.1021/acs.jafc.5b01592] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The ternary aggregates were fabricated by lactoferrin (LF), pectin (high methylated pectin (HMP)/low methylated pectin (LMP)), and (-)-epigallocatechin gallate (EGCG) through three different fabrication methods at pH 5.0. The turbidity, particle size, and ζ-potential of ternary aggregates were influenced by the types of pectin, the concentration of EGCG, and fabrication methods. The fluorescence intensity of LF decreased with an increase in EGCG concentration for all ternary aggregates. Far-UV circular dichroism results indicated that EGCG could alter the secondary structure of LF with an increase in the proportion of β-sheet structure at the cost of unordered coil structure. According to near-UV circular dichroism results, EGCG could also modulate the tertiary structure of LF at the presence of pectin. In addition, EGCG could increase the viscoelasticity of the ternary aggregates with HMP, leading to better stability of the ternary aggregates. An opposite result was observed for the ternary aggregates with LMP. These findings should provide an insight into the fabrication mechanism and applications of ternary aggregates formed by protein, polysaccharide, and polyphenol in the food, pharmaceutical, and cosmetic industries.
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67
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Comparative evaluation of polymeric and waxy microspheres for combined colon delivery of ascorbic acid and ketoprofen. Int J Pharm 2015; 485:365-73. [PMID: 25746948 DOI: 10.1016/j.ijpharm.2015.02.073] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/26/2015] [Accepted: 02/28/2015] [Indexed: 11/23/2022]
Abstract
The goal of this work was to combine the ketoprofen anti-inflammatory effect with the ascorbic acid antioxidant properties for a more efficient treatment of colonic pathologies. With this aim, microspheres (MS) based on both waxy materials (ceresine, Precirol(®) and Compritol(®)) or hydrophilic biopolymers (pectine, alginate and chitosan) loaded with the two drugs were developed, physicochemically characterized and compared in terms of entrapment efficiency, in vitro release profiles, potential toxicity and drug permeation properties across the Caco-2 cell line. Waxy MS revealed an high encapsulation efficiency of ketoprofen but a not detectable entrapment of ascorbic acid, while polymeric MS showed a good entrapment efficiency of both drugs. All MS need a gastro-resistant coating, to avoid any premature release of the drugs. Ketoprofen release rate from polymeric matrices was clearly higher than from the waxy ones. In contrast, the ASC release rate was higher, due to its high hydro-solubility. Cytotoxicity studies revealed the safety of all the formulations. Transport studies showed that the ketoprofen apparent permeability increased, when formulated with the different MS. In conclusion, only polymeric MS enabled an efficient double encapsulation of both the hydrophilic and lipophilic drugs, and, in addition, presented higher drug release rate and stronger enhancer properties.
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68
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da Silva LM, Montanari CM, Santos OMM, Cazedey ECL, Ângelo ML, de Araújo MB. Quality evaluation of the Finasteride polymorphic forms I and II in capsules. J Pharm Biomed Anal 2015; 105:24-31. [DOI: 10.1016/j.jpba.2014.11.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 11/04/2014] [Accepted: 11/25/2014] [Indexed: 01/24/2023]
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69
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Yu Q, Zheng Y, Yan N, Xie Y, Qiao K, Jin R. The gelation process and protein absorption property of injectable SA-CMBC hydrogel used for procoagulant material. RSC Adv 2015. [DOI: 10.1039/c5ra19562d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CMBC showed obvious influence on properties of injectable SA-CMBC hydrogel, containing gelation time, mechanical property, protein absorption and procoagulant property.
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Affiliation(s)
- Qun Yu
- School of Materials Science and Engineering
- University of Science and Technology, Beijing
- Beijing 100083
- PR China
| | - Yudong Zheng
- School of Materials Science and Engineering
- University of Science and Technology, Beijing
- Beijing 100083
- PR China
| | - Ning Yan
- School of Materials Science and Engineering
- University of Science and Technology, Beijing
- Beijing 100083
- PR China
| | - Yajie Xie
- School of Materials Science and Engineering
- University of Science and Technology, Beijing
- Beijing 100083
- PR China
| | - Kun Qiao
- School of Materials Science and Engineering
- University of Science and Technology, Beijing
- Beijing 100083
- PR China
| | - Rui Jin
- School of Materials Science and Engineering
- University of Science and Technology, Beijing
- Beijing 100083
- PR China
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70
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Wu QX, Lin DQ, Yao SJ. Design of chitosan and its water soluble derivatives-based drug carriers with polyelectrolyte complexes. Mar Drugs 2014; 12:6236-53. [PMID: 25532565 PMCID: PMC4278227 DOI: 10.3390/md12126236] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/11/2014] [Accepted: 12/12/2014] [Indexed: 01/04/2023] Open
Abstract
Chitosan, the cationic polysaccharide derived from the natural polysaccharide chitin, has been studied as a biomaterial for more than two decades. As a polycationic polymer with favorable properties, it has been widely used to form polyelectrolyte complexes with polyanions for various applications in drug delivery fields. In recent years, a growing number of studies have been focused on the preparation of polyelectrolyte complexes based on chitosan and its water soluble derivatives. They have been considered well-suited as biomaterials for a number of vital drug carriers with targeted/controlled release profiles, e.g., films, capsules, microcapsules. In this work, an overview highlights not only the favorable properties of chitosan and its water soluble derivatives but also the good performance of the polyelectrolyte complexes produced based on chitosan. Their various types of applications as drug carriers are reviewed in detail.
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Affiliation(s)
- Qing-Xi Wu
- Integrated Biotechnology Laboratory, School of Life Science, Anhui University, Hefei 230601, China.
| | - Dong-Qiang Lin
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Shan-Jing Yao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
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