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Tang Q, Deng N, Chen J, Sun H, Dong Y, Zeng Q, Yuan H, Binks BP, Meng T. One-Step Fabrication of Coconut-Like Capsules via Competitive Reactions at an All-Aqueous Interface for Enzyme Immobilization. ACS APPLIED MATERIALS & INTERFACES 2023; 15:10621-10628. [PMID: 36800174 DOI: 10.1021/acsami.2c19788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A concept of interfacial competitive reaction between biomineralization and alginate gelation at an all-aqueous single-emulsion droplet interface to prepare robust coconut-like capsules (inner hard wall and outer soft wall) is developed. The concept is further applied for enzyme immobilization with high encapsulation efficiency, enzyme loading, mass transfer coefficient, and recyclability. The thickness and swelling properties of the shell are simply tunable by a competitive reaction. Our platform may open a green, facile, and efficient way to prepare organic-inorganic hybrid sustainable materials with tailored compositions and structures.
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Affiliation(s)
- Qiming Tang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Ningjun Deng
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Jialin Chen
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Hejia Sun
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Yuman Dong
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Qi Zeng
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Hao Yuan
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
| | - Bernard P Binks
- Department of Chemistry, University of Hull, Hull HU6 7RX, U.K
| | - Tao Meng
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, P. R. China
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Biomedical Applications of Thermosensitive Hydrogels for Controlled/Modulated Piroxicam Delivery. Gels 2023; 9:gels9010070. [PMID: 36661836 PMCID: PMC9858263 DOI: 10.3390/gels9010070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/13/2023] [Accepted: 01/13/2023] [Indexed: 01/18/2023] Open
Abstract
The objectives of this study are the synthesis of thermosensitive poly(N-isopropylacrylamide-co-2-hydroxypropyl methacrylate), p(NiPAm-HPMet), hydrogels and the analysis of a drug-delivery system based on piroxicam, as a model drug, and synthesized hydrogels. A high pressure liquid chromatography method has been used in order to determine both qualitative and quantitative amounts of unreacted monomers and crosslinkers from polymerized hydrogels. Swelling kinetics and the order of a swelling process of the hydrogels have been analyzed at 10 and 40 °C. The copolymers' thermal properties have been monitored by the differential scanning calorimetry (DSC) method. DSC termograms have shown that melting occurs in two temperature intervals (142.36-150.72 °C and 153.14-156.49 °C). A matrix system with incorporated piroxicam has been analyzed by using FTIR and SEM methods. Structural analysis has demonstrated that intermolecular non-covalent interactions have been built between side-groups of copolymer and loaded piroxicam. Morphology of p(NiPAm-HPMet) after drug incorporation indicates the piroxicam presence into the copolymer pores. Kinetic parameters of the piroxicam release from hydrogels at 37 °C and pH 7.4 indicate that the fluid transport mechanism corresponds to Fickian diffusion. As a result, formulation of thermosensitive p(NiPAm-HPMet) hydrogels with incorporated piroxicam could be of interest for further testing as a drug carrier for modulated and prolonged release, especially for topical administration.
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Kaur J, Gulati M, Kumar Jha N, Disouza J, Patravale V, Dua K, Kumar Singh S. Recent advances in developing polymeric micelles for treating cancer: breakthroughs and bottlenecks in their clinical translation. Drug Discov Today 2022; 27:1495-1512. [DOI: 10.1016/j.drudis.2022.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/04/2022] [Accepted: 02/08/2022] [Indexed: 12/22/2022]
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Nayeem J, Al-Bari MAA, Mahiuddin M, Rahman MA, Mefford OT, Ahmad H, Rahman MM. Silica coating of iron oxide magnetic nanoparticles by reverse microemulsion method and their functionalization with cationic polymer P(NIPAm-co-AMPTMA) for antibacterial vancomycin immobilization. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125857] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Luo K, Adra HJ, Kim YR. Preparation of starch-based drug delivery system through the self-assembly of short chain glucans and control of its release property. Carbohydr Polym 2020; 243:116385. [PMID: 32532382 DOI: 10.1016/j.carbpol.2020.116385] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022]
Abstract
Here, we report a starch-based carrier system for the delivery of insoluble bioactive compound via oral route. We utilized the intrinsic characteristics of debranched amylopectins that self-assemble into a spherical microparticle in aqueous environment to encapsulate guest molecules. Upon complexation with β-cyclodextrin, the model bioactive compound, curcumin (CUR), was effectively incorporated into the starch microparticles (SMPs) to form CUR-CD@SMPs during the self-assembly reaction. The stability of encapsulated curcumin against environmental stresses, such as photodegradation and chemical oxidation, was greatly enhanced upon encapsulation. The size of CUR-CD@SMPs could be precisely controlled from 0.3 μm to 2 μm by modulating the rate of debranching reaction. A change of release profiles from concave-downward to sigmoidal form was observed upon increasing the size of CUR-CD@SMPs, suggesting that the release site could be controlled by modulating the crystallinity or size of the carrier microparticles.
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Affiliation(s)
- Ke Luo
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Hazzel Joy Adra
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Young-Rok Kim
- Graduate School of Biotechnology & Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea.
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Khan MS, Roberts MS. Challenges and innovations of drug delivery in older age. Adv Drug Deliv Rev 2018; 135:3-38. [PMID: 30217519 DOI: 10.1016/j.addr.2018.09.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/31/2018] [Accepted: 09/07/2018] [Indexed: 12/12/2022]
Abstract
Both drug delivery performance and various age-related physical, mental and physiological changes can affect drug effectiveness and safety in elderly patients. The many drug delivery systems developed over the years include recent novel transdermal, nasal, pulmonary and orally disintegrating tablets that provide consistent, precise, timely and more targeted drug delivery. Certain drug delivery systems may be associated with suboptimal outcomes in the elderly because of the nature of drug present, a lack of appreciation of the impact of age-related changes in drug absorption, distribution and clearance, the limited availability of pharmacokinetic, safety and clinical data. Polypharmacy, patient morbidity and poor adherence can also contribute to sub-optimal drug delivery systems outcomes in the elderly. The development of drug delivery systems for the elderly is a poorly realised opportunity, with each system having specific advantages and limitations. A key challenge is to provide the innovation that best meets the specific physiological, psychological and multiple drug requirements of individual elderly patients.
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Nikjoo D, Aroguz AZ. Dual responsive polymeric bionanocomposite gel beads for controlled drug release systems. J Appl Polym Sci 2017. [DOI: 10.1002/app.45143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dariush Nikjoo
- Department of Chemistry, Faculty of Engineering; Istanbul University; Avcilar Istanbul 34320 Turkey
| | - Ayse Z. Aroguz
- Department of Chemistry, Faculty of Engineering; Istanbul University; Avcilar Istanbul 34320 Turkey
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Manzi G, Zoratto N, Matano S, Sabia R, Villani C, Coviello T, Matricardi P, Di Meo C. "Click" hyaluronan based nanohydrogels as multifunctionalizable carriers for hydrophobic drugs. Carbohydr Polym 2017; 174:706-715. [PMID: 28821122 DOI: 10.1016/j.carbpol.2017.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/26/2017] [Accepted: 07/02/2017] [Indexed: 12/22/2022]
Abstract
Highly hydrophilic and biocompatible nanocarriers based on polysaccharide hydrogels (nanohydrogels, NHs) were shown to be promising systems for drug delivery applications. Following the idea of these emerging drug carriers, the aim of the present work was to develop self-assembled hydrogel nanoparticles based on amphiphilic derivatives of hyaluronic acid (HA) and riboflavin (Rfv), synthesized by "click" Copper(I)-catalyzed Azide-Alkyne Cycloaddition (CuAAC) reaction. The obtained amphiphilic product (HA-c-Rfv) was able to form nanohydrogels in aqueous environments, in particular by applying an innovative autoclave-based method. HA of different molecular weights (Mw) and degrees of substitution (DS) were prepared and the effect of these parameters on the NHs formation was assessed. The derivative HA220-c-Rfv 40/40 was chosen as the most interesting system, capable to form NHs in the range of 150-200nm and with a negative ζ-potential. NHs were very stable in water solutions and, by adding dextrose as cryoprotectant, it was also possible to freeze-dry the NHs formulation. The developed system is proposed for the delivery of hydrophobic drugs; for this purpose, dexamethasone, piroxicam and paclitaxel were used as model drugs; these molecules were loaded into NHs with high efficiency by film-hydration technique. Furthermore, a HA-c-Rfv derivative bearing an excess of propargylic portions was capable to react with other N3-derivatized molecules, opening the route to a wide spectrum of functionalization opportunities: in this direction, PEG-N3 has been tested as a model molecule for the preparation of PEGylated NHs.
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Affiliation(s)
- Giuliana Manzi
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Nicole Zoratto
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Silvia Matano
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Rocchina Sabia
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Claudio Villani
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Tommasina Coviello
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Pietro Matricardi
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy
| | - Chiara Di Meo
- Department of Drug Chemistry and Technologies, "Sapienza'' University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy.
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Karimi M, Zangabad PS, Ghasemi A, Amiri M, Bahrami M, Malekzad H, Asl HG, Mahdieh Z, Bozorgomid M, Ghasemi A, Boyuk MRRT, Hamblin MR. Temperature-Responsive Smart Nanocarriers for Delivery Of Therapeutic Agents: Applications and Recent Advances. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21107-33. [PMID: 27349465 PMCID: PMC5003094 DOI: 10.1021/acsami.6b00371] [Citation(s) in RCA: 219] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Smart drug delivery systems (DDSs) have attracted the attention of many scientists, as carriers that can be stimulated by changes in environmental parameters such as temperature, pH, light, electromagnetic fields, mechanical forces, etc. These smart nanocarriers can release their cargo on demand when their target is reached and the stimulus is applied. Using the techniques of nanotechnology, these nanocarriers can be tailored to be target-specific, and exhibit delayed or controlled release of drugs. Temperature-responsive nanocarriers are one of most important groups of smart nanoparticles (NPs) that have been investigated during the past decades. Temperature can either act as an external stimulus when heat is applied from the outside, or can be internal when pathological lesions have a naturally elevated termperature. A low critical solution temperature (LCST) is a special feature of some polymeric materials, and most of the temperature-responsive nanocarriers have been designed based on this feature. In this review, we attempt to summarize recent efforts to prepare innovative temperature-responsive nanocarriers and discuss their novel applications.
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Affiliation(s)
- Mahdi Karimi
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Parham Sahandi Zangabad
- Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science (TUOMS), Tabriz, Iran
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | - Alireza Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Mohammad Amiri
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Mohsen Bahrami
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Hedieh Malekzad
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
- Department of Chemistry, Kharazmi University of Tehran, Tehran, Iran
| | - Hadi Ghahramanzadeh Asl
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
| | - Zahra Mahdieh
- Department of Biomedical and Pharmaceutical Sciences, Material Science and Engineering, University of Montana, Missoula, Montana 59812, United States
| | - Mahnaz Bozorgomid
- Department of Applied Chemistry, Central Branch of Islamic Azad University of Tehran, Tehran, Iran
| | - Amir Ghasemi
- Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, 14588 Tehran, Iran
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | | | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, United States
- Department of Dermatology, Harvard Medical School, Boston, Massachusetts 02115, United States
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, Massachusetts 02139, United States
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Lopes M, Abrahim B, Veiga F, Seiça R, Cabral LM, Arnaud P, Andrade JC, Ribeiro AJ. Preparation methods and applications behind alginate-based particles. Expert Opin Drug Deliv 2016; 14:769-782. [DOI: 10.1080/17425247.2016.1214564] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Marlene Lopes
- University of Coimbra, Coimbra, Portugal
- CNC − Center for Neuroscience and Cell Biology, Coimbra, Portugal
| | - Barbara Abrahim
- Department of Pharmaceutics,Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Francisco Veiga
- University of Coimbra, Coimbra, Portugal
- CNC − Center for Neuroscience and Cell Biology, Coimbra, Portugal
| | - Raquel Seiça
- IBILI − Instituto de Imagem Biomédica e Ciências da Vida, Coimbra, Portugal
| | - Lucio Mendes Cabral
- Department of Pharmaceutics,Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - José Carlos Andrade
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde and Instituto Universitário de Ciências da Saúde, Gandra, Portugal
| | - Antonio J. Ribeiro
- University of Coimbra, Coimbra, Portugal
- I3S − Instituto de Investigacão e Inovacão em Saúde, University of Porto, Porto, Portugal
- IBMC − Instituto de Biologia Molecular e Celular, Porto, Portugal
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Alhaique F, Casadei MA, Cencetti C, Coviello T, Di Meo C, Matricardi P, Montanari E, Pacelli S, Paolicelli P. From macro to nano polysaccharide hydrogels: An opportunity for the delivery of drugs. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.09.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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13
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Niang PM, Huang Z, Dulong V, Souguir Z, Le Cerf D, Picton L. Thermo-controlled rheology of electro-assembled polyanionic polysaccharide (alginate) and polycationic thermo-sensitive polymers. Carbohydr Polym 2016; 139:67-74. [DOI: 10.1016/j.carbpol.2015.12.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/12/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
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14
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Zhang J, Cui Z, Field R, Moloney MG, Rimmer S, Ye H. Thermo-responsive microcarriers based on poly(N-isopropylacrylamide). Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.04.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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15
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Jain D, Bar-Shalom D. Alginate drug delivery systems: application in context of pharmaceutical and biomedical research. Drug Dev Ind Pharm 2014; 40:1576-84. [DOI: 10.3109/03639045.2014.917657] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Mendonça PV, Konkolewicz D, Averick SE, Serra AC, Popov AV, Guliashvili T, Matyjaszewski K, Coelho JFJ. Synthesis of cationic poly((3-acrylamidopropyl)trimethylammonium chloride) by SARA ATRP in ecofriendly solvent mixtures. Polym Chem 2014. [DOI: 10.1039/c4py00707g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Successful supplemental activator and reducing agent atom transfer radical polymerization of (3-acrylamidopropyl)trimethylammonium chloride under ecofriendly conditions.
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Affiliation(s)
- Patrícia V. Mendonça
- CEMUC
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra, Portugal
| | | | | | - Arménio C. Serra
- CEMUC
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra, Portugal
| | | | - Tamaz Guliashvili
- CEMUC
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra, Portugal
| | | | - Jorge F. J. Coelho
- CEMUC
- Department of Chemical Engineering
- University of Coimbra
- 3030-790 Coimbra, Portugal
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Zhao J, Guo B, Ma PX. Injectable alginate microsphere/PLGA–PEG–PLGA composite hydrogels for sustained drug release. RSC Adv 2014. [DOI: 10.1039/c4ra00788c] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Interpenetrating Polymer Networks polysaccharide hydrogels for drug delivery and tissue engineering. Adv Drug Deliv Rev 2013; 65:1172-87. [PMID: 23603210 DOI: 10.1016/j.addr.2013.04.002] [Citation(s) in RCA: 316] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 03/15/2013] [Accepted: 04/10/2013] [Indexed: 11/22/2022]
Abstract
The ever increasing improvements of pharmaceutical formulations have been often obtained by means of the use of hydrogels. In particular, environmentally sensitive hydrogels have been investigated as "smart" delivery systems capable to release, at the appropriate time and site of action, entrapped drugs in response to specific physiological triggers. At the same time the progress in the tissue engineering research area was possible because of significant innovations in the field of hydrogels. In recent years multicomponent hydrogels, such as semi-Interpenetrating Polymer Networks (semi-IPNs) and Interpenetrating Polymer Networks (IPNs) have emerged as innovative biomaterials for drug delivery and as scaffolds for tissue engineering. These interpenetrated hydrogel networks, which can be obtained by either chemical or physical crosslinking, in most cases show physico-chemical properties that can remarkably differ from those of the macromolecular constituents. Among the synthetic and natural polymers that have been used for the preparation of semi-IPNs and IPNs, polysaccharides represent a class of macromolecules of particular interest because they are usually abundant, available from renewable sources and have a large variety of composition and properties that may allow appropriately tailored chemical modifications. Sometimes both macromolecular systems are based on polysaccharides but often also synthetic polymers are present together with polysaccharide chains. The description and discussion of (semi)-IPNs reported here, will allow to acquire a better understanding of the potential and wide range of applications of IPN polysaccharide hydrogels. A quite large number of polysaccharides have been investigated for the design of (semi)-IPNs for drug delivery and tissue engineering applications. This review article however mainly focuses on two of the most studied polysaccharide-based (semi)-IPNs, namely those obtained using alginate and hyaluronic acid. An overview of the methods of preparation, the properties, the performances as drug delivery systems and as scaffolds for tissue engineering, of (semi)-IPNs obtained using these two polysaccharides and their derivatives, will be given.
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Poojari R, Srivastava R. Composite alginate microspheres as the next-generation egg-box carriers for biomacromolecules delivery. Expert Opin Drug Deliv 2013; 10:1061-76. [DOI: 10.1517/17425247.2013.796361] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Naturally and synthetic smart composite biomaterials for tissue regeneration. Adv Drug Deliv Rev 2013; 65:471-96. [PMID: 22465488 DOI: 10.1016/j.addr.2012.03.009] [Citation(s) in RCA: 210] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/01/2012] [Accepted: 03/07/2012] [Indexed: 11/23/2022]
Abstract
The development of smart biomaterials for tissue regeneration has become the focus of intense research interest. More opportunities are available by the composite approach of combining the biomaterials in the form of biopolymers and/or bioceramics either synthetic or natural. Strategies to provide smart capabilities to the composite biomaterials primarily seek to achieve matrices that are instructive/inductive to cells, or that stimulate/trigger target cell responses that are crucial in the tissue regeneration processes. Here, we review in-depth, recent developments concerning smart composite biomaterials available for delivery systems of biofactors and cells and scaffolding matrices in tissue engineering. Smart composite designs are possible by modulating the bulk and surface properties that mimic the native tissues, either in chemical (extracellular matrix molecules) or in physical properties (e.g. stiffness), or by introducing external therapeutic molecules (drugs, proteins and genes) within the structure in a way that allows sustainable and controllable delivery, even time-dependent and sequential delivery of multiple biofactors. Responsiveness to internal or external stimuli, including pH, temperature, ionic strength, and magnetism, is another promising means to improve the multifunctionality in smart scaffolds with on-demand delivery potential. These approaches will provide the next-generation platforms for designing three-dimensional matrices and delivery systems for tissue regenerative applications.
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An X, Zhan F, Zhu Y. Smart photothermal-triggered bilayer phase transition in AuNPs-liposomes to release drug. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:1061-1068. [PMID: 23286691 DOI: 10.1021/la304692h] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Novel thermosensitive liposomes with embedded Au nanoparticles (AuNPs) in the liposome bilayer were prepared by a combination method of film build and supercritical CO(2) incubation. These AuNPs-liposomes possess AuNPs that are embedded in the bilayer and a drug that is encapsulated in the central aqueous compartment. The AuNPs in the liposomes can strongly absorb light energy and efficiently convert the absorbed energy to heat. The localized heat induces a phase transition in the liposome bilayer and releases the drug. The drug release from the AuNPs-liposomes can be controlled by the irradiation time and AuNPs concentration in the AuNPs-liposomes at room temperature, where the AuNPs function as a nanoswitch for triggering drug release both spatially and temporally. The results suggest that drug release from the AuNPs-liposomes is due to a photothermic effect that induces phase transition of the liposomes rather than destruction of the liposome bilayer.
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Affiliation(s)
- Xueqin An
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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Enhanced hemostatic performance of tranexamic acid-loaded chitosan/alginate composite microparticles. J Biomed Biotechnol 2012. [PMID: 23193369 PMCID: PMC3502066 DOI: 10.1155/2012/981321] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Novel microparticles based on chitosan and sodium alginate were prepared using emulsification and cross-linking technologies. The spherical microparticles had a porous surface and a diameter of 2 ~ 40 μm. In simulated body fluid, these microparticles quickly swelled but gradually degraded. The results of the MTT assay revealed that a slight inhibition of cell proliferation was observed on day 2 and then gradually decreased afterward. No cell morphology changes were observed. By loading tranexamic acid, the hemostatic performance of the microparticles was obviously improved. Using fast-acting styptic powder (Flashclot) as the control, the hemostatic efficiency was investigated in rabbits using a liver transection bleeding model. It was found that both Flashclot and the microparticles achieved hemostasis in 3.07 ± 0.84 min and 2.48 ± 0.88 min, respectively; however, the tranexamic acid-loaded microparticles stopped the bleeding in 1.90 ± 0.75 min (P < 0.05). Additionally, Flashclot resulted in heat injury to the experimental livers, while the microparticles did not. Thus, with their biodegradability, safety, and superior hemostatic efficiency, tranexamic acid-loaded microparticles might be a promising new powdered hemostatic agent with a wide range of potential applications.
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Perez RA, Kim HW. Core-shell designed scaffolds of alginate/alpha-tricalcium phosphate for the loading and delivery of biological proteins. J Biomed Mater Res A 2012; 101:1103-12. [DOI: 10.1002/jbm.a.34406] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 08/06/2012] [Accepted: 08/07/2012] [Indexed: 11/11/2022]
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Perrie Y, Badhan RKS, Kirby DJ, Lowry D, Mohammed AR, Ouyang D. The impact of ageing on the barriers to drug delivery. J Control Release 2012; 161:389-98. [DOI: 10.1016/j.jconrel.2012.01.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Revised: 01/14/2012] [Accepted: 01/16/2012] [Indexed: 10/14/2022]
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Alginate/protamine/silica hybrid capsules with ultrathin membranes for laccase immobilization. AIChE J 2012. [DOI: 10.1002/aic.13834] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Li Y, Rodrigues J, Tomás H. Injectable and biodegradable hydrogels: gelation, biodegradation and biomedical applications. Chem Soc Rev 2012; 41:2193-221. [PMID: 22116474 DOI: 10.1039/c1cs15203c] [Citation(s) in RCA: 942] [Impact Index Per Article: 78.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Injectable hydrogels with biodegradability have in situ formability which in vitro/in vivo allows an effective and homogeneous encapsulation of drugs/cells, and convenient in vivo surgical operation in a minimally invasive way, causing smaller scar size and less pain for patients. Therefore, they have found a variety of biomedical applications, such as drug delivery, cell encapsulation, and tissue engineering. This critical review systematically summarizes the recent progresses on biodegradable and injectable hydrogels fabricated from natural polymers (chitosan, hyaluronic acid, alginates, gelatin, heparin, chondroitin sulfate, etc.) and biodegradable synthetic polymers (polypeptides, polyesters, polyphosphazenes, etc.). The review includes the novel naturally based hydrogels with high potential for biomedical applications developed in the past five years which integrate the excellent biocompatibility of natural polymers/synthetic polypeptides with structural controllability via chemical modification. The gelation and biodegradation which are two key factors to affect the cell fate or drug delivery are highlighted. A brief outlook on the future of injectable and biodegradable hydrogels is also presented (326 references).
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Affiliation(s)
- Yulin Li
- CQM-Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada 9020-105 Funchal, Portugal.
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Fundueanu G, Constantin M, Oanea I, Harabagiu V, Ascenzi P, Simionescu BC. Prediction of the appropriate size of drug molecules that could be released by a pulsatile mechanism from pH/thermoresponsive microspheres obtained from preformed polymers. Acta Biomater 2012; 8:1281-9. [PMID: 21945634 DOI: 10.1016/j.actbio.2011.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/13/2011] [Accepted: 09/01/2011] [Indexed: 11/17/2022]
Abstract
Preparation of cross-linked pH/thermoresponsive microspheres from preformed polymers is still lacking in literature since copolymers possessing both temperature- and pH-sensitive units together with a cross-linkable moiety in appropriate ratios are required. Moreover, choosing of the appropriate drugs able to be loaded and then released in a pulsatile manner is randomly performed. Here, we report the synthesis of pH/thermoresponsive cross-linked microspheres based on N-isopropylacrylamide and N-alloc-ethylenediamine. A chromatographic method was developed to predict the appropriate size of drug molecules that could be loaded and then released in a pulsatile manner. Accordingly, it was established that common drugs (salicylic acid, benzoic acid, nicotinic acid, lidocaine and diclofenac), with molecular weights ranging between 100 and 1000 g mol(-1), could be loaded and released in a pulsatile manner. Biologic molecules with higher molecular weights (heparin, lysozyme and bovine serum albumin) are completely excluded from the pores of cross-linked pH/thermoresponsive microspheres both below and above the volume phase transition temperature.
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Affiliation(s)
- Gheorghe Fundueanu
- Department of Bioactive and Biocompatible Polymers, "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iassy, Romania.
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Characterization of insoluble calcium alginates by solid-state NMR. Carbohydr Polym 2012; 87:383-391. [DOI: 10.1016/j.carbpol.2011.07.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 07/28/2011] [Accepted: 07/28/2011] [Indexed: 11/17/2022]
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29
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Işıklan N, İnal M, Kurşun F, Ercan G. pH responsive itaconic acid grafted alginate microspheres for the controlled release of nifedipine. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.12.054] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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