1
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Kesharwani P, Bisht A, Alexander A, Dave V, Sharma S. Biomedical applications of hydrogels in drug delivery system: An update. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102914] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Ayar Z, Shafieian M, Mahmoodi N, Sabzevari O, Hassannejad Z. A rechargeable drug delivery system based on
pNIPAM
hydrogel for the local release of curcumin. J Appl Polym Sci 2021. [DOI: 10.1002/app.51167] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zahra Ayar
- Department of Biomedical Engineering Amirkabir University of Technology (Tehran Polytechnic) Tehran Iran
| | - Mehdi Shafieian
- Department of Biomedical Engineering Amirkabir University of Technology (Tehran Polytechnic) Tehran Iran
| | - Narges Mahmoodi
- Sina Trauma and Surgery Research Center Tehran University of Medical Sciences Tehran Iran
| | - Omid Sabzevari
- Toxicology and Poisoning Research Centre Tehran University of Medical Sciences Tehran Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran
| | - Zahra Hassannejad
- Pediatric Urology and Regenerative Medicine Research Center Tehran University of Medical Sciences Tehran Iran
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3
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Antibacterial efficiency of silver nanoparticles-loaded locust bean gum/polyvinyl alcohol hydrogels. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03418-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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4
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Ha JH, Shin HH, Choi HW, Lim JH, Mo SJ, Ahrberg CD, Lee JM, Chung BG. Electro-responsive hydrogel-based microfluidic actuator platform for photothermal therapy. LAB ON A CHIP 2020; 20:3354-3364. [PMID: 32749424 DOI: 10.1039/d0lc00458h] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Electrical stimuli play an important role in regulating the delivery of plasmonic nanomaterials with cancer targeting peptides. Here, we developed an electro-responsive hydrogel-based microfluidic actuator platform for brain tumor targeting and photothermal therapy (PTT) applications. The electro-responsive hydrogels consisted of highly conductive silver nanowires (AgNWs) and biocompatible collagen I gels. We confirmed that an electrically conductive hydrogel could be used as an effective actuator by applying an electrical signal in the microfluidic platform. Furthermore, we successfully demonstrated PTT efficacy for brain tumor cells using targetable Arg-Gly-Asp (RGD) peptide-conjugated gold nanorods (GNRs). Therefore, our electro-responsive hydrogel-based microfluidic actuator platform could be useful for electro-responsive intelligent nanomaterial delivery and PTT applications.
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Affiliation(s)
- Jang Ho Ha
- Department of Mechanical Engineering, Sogang University, Seoul, Republic of Korea.
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5
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Biomimicry of microbial polysaccharide hydrogels for tissue engineering and regenerative medicine – A review. Carbohydr Polym 2020; 241:116345. [DOI: 10.1016/j.carbpol.2020.116345] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 12/17/2022]
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6
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Bulut E. Flurbiprofen-loaded interpenetrating polymer network beads based on alginate, polyvinyl alcohol and methylcellulose: design, characterization and in-vitro evaluation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:1671-1688. [DOI: 10.1080/09205063.2020.1769800] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Emine Bulut
- Department of Food Processing, Bolvadin Vocational School, Afyon Kocatepe University, Afyonkarahisar, Turkey
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7
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Op 't Veld RC, Walboomers XF, Jansen JA, Wagener FADTG. Design Considerations for Hydrogel Wound Dressings: Strategic and Molecular Advances. TISSUE ENGINEERING PART B-REVIEWS 2020; 26:230-248. [PMID: 31928151 DOI: 10.1089/ten.teb.2019.0281] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Wound dressings are traditionally used to protect a wound and to facilitate healing. Currently, their function is expanding. There is an urgent need for new smart products that not only act as a protective barrier but also actively support the wound healing process. Hydrogel dressings are an example of such innovative products and typically facilitate wound healing by providing a hospitable and moist environment in which cells can thrive, while the wound can still breathe and exudate can be drained. These dressings also tend to be less painful or have a soothing effect and allow for additional drug delivery. In this review, various strategic and molecular design considerations are discussed that are relevant for developing a hydrogel into a wound dressing product. These considerations vary from material choice to ease of use and determine the dressing's final properties, application potential, and benefits for the patient. The focus of this review lies on identifying and explaining key aspects of hydrogel wound dressings and their relevance in the different phases of wound repair. Molecular targets of wound healing are discussed that are relevant when tailoring hydrogels toward specific wound healing scenarios. In addition, the potential of hydrogels is reviewed as medicine advances from a repair-based wound healing approach toward a regenerative-based one. Hydrogels can play a key role in the transition toward personal wound care and facilitating regenerative medicine strategies by acting as a scaffold for (stem) cells and carrier/source of bioactive molecules and/or drugs. Impact statement Improved wound healing will lead to a better quality of life around the globe. It can be expected that this coincides with a reduction in health care spending, as the duration of treatment decreases. To achieve this, new and modern wound care products are desired that both facilitate healing and improve comfort and outcome for the patient. It is proposed that hydrogel wound dressings can play a pivotal role in improving wound care, and to that end, this review aims to summarize the various design considerations that can be made to optimize hydrogels for the purpose of a wound dressing.
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Affiliation(s)
- Roel C Op 't Veld
- Department of Dentistry-Biomaterials, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands.,Department of Dentistry-Orthodontics and Craniofacial Biology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - X Frank Walboomers
- Department of Dentistry-Biomaterials, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - John A Jansen
- Department of Dentistry-Biomaterials, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Frank A D T G Wagener
- Department of Dentistry-Orthodontics and Craniofacial Biology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
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8
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Yang W, Veroniaina H, Qi X, Chen P, Li F, Ke PC. Soft and Condensed Nanoparticles and Nanoformulations for Cancer Drug Delivery and Repurpose. ADVANCED THERAPEUTICS 2020; 3:1900102. [PMID: 34291146 PMCID: PMC8291088 DOI: 10.1002/adtp.201900102] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Indexed: 12/24/2022]
Abstract
Drug repurpose or reposition is recently recognized as a high-performance strategy for developing therapeutic agents for cancer treatment. This approach can significantly reduce the risk of failure, shorten R&D time, and minimize cost and regulatory obstacles. On the other hand, nanotechnology-based delivery systems are extensively investigated in cancer therapy due to their remarkable ability to overcome drug delivery challenges, enhance tumor specific targeting, and reduce toxic side effects. With increasing knowledge accumulated over the past decades, nanoparticle formulation and delivery have opened up a new avenue for repurposing drugs and demonstrated promising results in advanced cancer therapy. In this review, recent developments in nano-delivery and formulation systems based on soft (i.e., DNA nanocages, nanogels, and dendrimers) and condensed (i.e., noble metal nanoparticles and metal-organic frameworks) nanomaterials, as well as their theranostic applications in drug repurpose against cancer are summarized.
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Affiliation(s)
- Wen Yang
- Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA
| | | | - Xiaole Qi
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing 210009, China; ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade Parkville, VIC 3052, Australia
| | - Pengyu Chen
- Materials Research and Education Center, Auburn University, Auburn, AL 36849, USA
| | - Feng Li
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn AL 36849, USA
| | - Pu Chun Ke
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade Parkville, VIC 3052, Australia
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9
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Ganguly S, Mondal S, Das P, Bhawal P, Maity PP, Ghosh S, Dhara S, Das NC. Design of psyllium-g-poly(acrylic acid-co-sodium acrylate)/cloisite 10A semi-IPN nanocomposite hydrogel and its mechanical, rheological and controlled drug release behaviour. Int J Biol Macromol 2018; 111:983-998. [DOI: 10.1016/j.ijbiomac.2018.01.100] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/01/2018] [Accepted: 01/14/2018] [Indexed: 11/27/2022]
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10
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Analytical Expressions Pertaining to the Steady State Concentrations of Glucose, Oxygen and Gluconic Acid in a Composite Membrane Using Genocchi Polynomials. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-017-3003-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Khalid Q, Ahmad M, Usman Minhas M. Hydroxypropyl-β-cyclodextrin hybrid nanogels as nano-drug delivery carriers to enhance the solubility of dexibuprofen: Characterization, in vitro release, and acute oral toxicity studies. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21876] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qandeel Khalid
- Faculty of Pharmacy and Alternative Medicine; The Islamia University of Bahawalpur; Punjab Pakistan
| | - Mahmood Ahmad
- Faculty of Pharmacy and Alternative Medicine; The Islamia University of Bahawalpur; Punjab Pakistan
| | - Muhammad Usman Minhas
- Faculty of Pharmacy and Alternative Medicine; The Islamia University of Bahawalpur; Punjab Pakistan
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12
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Noppakundilograt S, Choopromkaw S, Kiatkamjornwong S. Hydrolyzed collagen-grafted-poly[(acrylic acid)-co
-(methacrylic acid)] hydrogel for drug delivery. J Appl Polym Sci 2017. [DOI: 10.1002/app.45654] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Supaporn Noppakundilograt
- Department of Imaging and Printing Technology; Faculty of Science, Chulalongkirn University; Bangkok Thailand
| | - Sopinya Choopromkaw
- Program of Petrochemistry and Polymer Science, Faculty of Science; Chulalongkorn University; Bangkok Thailand
| | - Suda Kiatkamjornwong
- Faculty of Science; Chulalongkorn University; Bangkok Thailand
- The Academy of Science, The Royal Society of Thailand, Sanam Sueapa; Dusit Bangkok 10300 Thailand
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13
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Mukherjee SB, Datta D, Raha S, Pal D. Numerical simulation of a glucose sensitive composite membrane closed-loop insulin delivery system. Bioprocess Biosyst Eng 2017. [PMID: 28647826 DOI: 10.1007/s00449-017-1803-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Closed-loop insulin delivery system works on pH modulation by gluconic acid production from glucose, which in turn allows regulation of insulin release across membrane. Typically, the concentration variation of gluconic acid can be numerically modeled by a set of non-linear, non-steady state reaction diffusion equations. Here, we report a simpler numerical approach to time and position dependent diffusivity of species using finite difference and differential quadrature (DQ) method. The results are comparable to that obtained by analytical method. The membrane thickness directly determines the concentrations of the glucose and oxygen in the system, and inversely to the gluconic acid. The advantage with the DQ method is that its parameter values need not be altered throughout the analysis to obtain the concentration profiles of the glucose, oxygen and gluconic acid. Our work would be useful for modeling diabetes and other systems governed by such non-linear and non-steady state reaction diffusion equations.
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Affiliation(s)
- Shashi Bajaj Mukherjee
- Department of Computational and Data Sciences, Indian Institute of Science, C. V. Raman Avenue, Bangalore, Karnataka, 560012, India
| | - Debabrata Datta
- Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, 400085, India
| | - Soumyendu Raha
- Department of Computational and Data Sciences, Indian Institute of Science, C. V. Raman Avenue, Bangalore, Karnataka, 560012, India
| | - Debnath Pal
- Department of Computational and Data Sciences, Indian Institute of Science, C. V. Raman Avenue, Bangalore, Karnataka, 560012, India.
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14
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Bionanocomposite systems based on montmorillonite and biopolymers for the controlled release of olanzapine. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:1250-1258. [DOI: 10.1016/j.msec.2017.03.044] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/22/2016] [Accepted: 03/04/2017] [Indexed: 12/31/2022]
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15
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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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16
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Hu Y, Chen T, Dong X, Mei Z. Preparation and characterization of composite hydrogel beads based on sodium alginate. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1440-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Lui YS, Lewis MP, Loo SCJ. Sustained-release of naproxen sodium from electrospun-aligned PLLA-PCL scaffolds. J Tissue Eng Regen Med 2015; 11:1011-1021. [DOI: 10.1002/term.2000] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 09/19/2014] [Accepted: 12/12/2014] [Indexed: 12/13/2022]
Affiliation(s)
- Yuan Siang Lui
- School of Materials Science and Engineering; Nanyang Technological University; Singapore
- Institute for Sports Research; Nanyang Technological University; Singapore
- School of Sport, Exercise and Health Sciences; Loughborough University; UK
| | - Mark P. Lewis
- Institute for Sports Research; Nanyang Technological University; Singapore
- School of Sport, Exercise and Health Sciences; Loughborough University; UK
- National Centre for Sport and Exercise Medicine England; Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, School of Sport, Exercise and Health Sciences, Loughborough University; UK
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering; Nanyang Technological University; Singapore
- Institute for Sports Research; Nanyang Technological University; Singapore
- Singapore Centre for Environmental Life Sciences Engineering (SCELSE); Nanyang Technological University; Singapore
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18
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Li Z, Li J. Control of hyperbranched structure of polycaprolactone/poly(ethylene glycol) polyurethane block copolymers by glycerol and their hydrogels for potential cell delivery. J Phys Chem B 2013; 117:14763-74. [PMID: 24175974 DOI: 10.1021/jp4094063] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of biodegradable amphiphilic polyurethane block copolymers with hyperbranched structure were synthesized by copolymerizing poly(ε-caprolactone) (PCL) and poly(ethylene glycol) (PEG) together with glycerol. The copolymers were characterized, and their composition and branch length were varied with the feeding ratio between PCL, PEG, and glycerol used. Hydrogels were formed from these copolymers by swelling of water at low polymer concentrations. The hydrogels were thixotropic, and their dynamic viscoelastic properties were dependent on the copolymer composition, branch length, and polymer concentration. Hydrolytic degradation of the hydrogels was evaluated by mass loss and changes in molecular structures. The porous morphology of the hydrogels provided good permeability for gas and nutrition. Together with the tunable rheological properties, the hydrogels were found to be suitable for 3D living cell encapsulation and delivery. The morphology of the solid copolymers was semicrystalline, while the hydrogels were totally amorphous without crystallinity, providing a mild aqueous environment for living cells. When the encapsulated cells were recovered from the hydrogels followed by subculture, they showed good cell viability and proliferation ability. The results indicate that the hyperbranched copolymers hydrogels developed in this work may be promising candidates for potential injectable cell delivery application.
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Affiliation(s)
- Zibiao Li
- Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore , 7 Engineering Drive 1, Singapore 117574, Singapore
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19
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Kajjari PB, Manjeshwar LS, Aminabhavi TM. Novel blend microspheres of poly(vinyl alcohol) and succinyl chitosan for controlled release of nifedipine. Polym Bull (Berl) 2013. [DOI: 10.1007/s00289-013-1029-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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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: 320] [Impact Index Per Article: 29.1] [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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21
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Pulat M, Akalın GO, Karahan ND. Lipase release through semi-interpenetrating polymer network hydrogels based on chitosan, acrylamide, and citraconic acid. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2013; 42:121-7. [DOI: 10.3109/21691401.2013.794356] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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Rajendran L, Bieniasz LK. Analytical expressions for the steady-state concentrations of glucose, oxygen and gluconic acid in a composite membrane for closed-loop insulin delivery. J Membr Biol 2012; 246:121-9. [PMID: 23117226 DOI: 10.1007/s00232-012-9510-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Accepted: 10/15/2012] [Indexed: 11/30/2022]
Abstract
The mathematical model of Abdekhodaie and Wu (J Membr Sci 335:21-31, 2009) of glucose-responsive composite membranes for closed-loop insulin delivery is discussed. The glucose composite membrane contains nanoparticles of an anionic polymer, glucose oxidase and catalase embedded in a hydrophobic polymer. The model involves the system of nonlinear steady-state reaction-diffusion equations. Analytical expressions for the concentration of glucose, oxygen and gluconic acid are derived from these equations using the Adomian decomposition method. A comparison of the analytical approximation and numerical simulation is also presented. An agreement between analytical expressions and numerical results is observed.
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Affiliation(s)
- L Rajendran
- Department of Mathematics, The Madura College, Madurai 625011, Tamilnadu, India.
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23
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Yang T, Malkoch M, Hult A. Sequential interpenetrating poly(ethylene glycol) hydrogels prepared by UV-initiated thiol-ene coupling chemistry. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26393] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mohamed NA, Fahmy MM. Synthesis and antimicrobial activity of some novel cross-linked chitosan hydrogels. Int J Mol Sci 2012; 13:11194-11209. [PMID: 23109847 PMCID: PMC3472739 DOI: 10.3390/ijms130911194] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/10/2012] [Accepted: 08/20/2012] [Indexed: 11/19/2022] Open
Abstract
Four novel hydrogels based on chitosan were synthesized via a cross-linking reaction of chitosan with different concentrations of oxalyl bis 4-(2,5-dioxo-2H-pyrrol- 1(5H)-yl)benzamide. Their structures were confirmed by fourier transform infrared X-ray (FTIR), scanning electron microscopy (SEM) and X-ray diffraction. The antimicrobial activities of the hydrogels against two crop-threatening pathogenic fungi namely: Aspergillus fumigatus (A. fumigatus, RCMBA 06002), and Aspergillus niger (A. niger, RCMBA 06106), and five bacterial species namely: Bacillis subtilis (B. subtilis, RCMBA 6005), Staphylococcus aureus (S. aureus, RCMBA 2004), Streptococcus pneumoniae (S. pneumonia, RCMB 000101) as Gram positive bacteria, and Salmonella typhimurium (S. typhimurium, RCMB 000104), and Escherichia coli (E. coli, RCMBA 5003) as Gram negative bacteria have been investigated. The prepared hydrogels showed much higher antimicrobial activities than that of the parent chitosan. The hydrogels were more potent in case of Gram-positive bacteria than Gram-negative bacteria. Increasing the degree of cross-linking in the hydrogels resulted in a weaker antimicrobial activity.
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Affiliation(s)
- Nadia Ahmed Mohamed
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +2-02-35676612
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Pulat M, Kahraman AS, Tan N, Gümüşderelioğlu M. Sequential antibiotic and growth factor releasing chitosan-PAAm semi-IPN hydrogel as a novel wound dressing. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 24:807-19. [DOI: 10.1080/09205063.2012.718613] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mehlika Pulat
- a Faculty of Arts and Sciences, Department of Chemistry , Gazi University , Teknikokullar , Ankara , Turkey
| | - Anıl Sera Kahraman
- b Chemical Engineering and Bioengineeering Departments , Hacettepe University , Beytepe , Ankara , Turkey
| | - Nur Tan
- a Faculty of Arts and Sciences, Department of Chemistry , Gazi University , Teknikokullar , Ankara , Turkey
| | - Menemşe Gümüşderelioğlu
- b Chemical Engineering and Bioengineeering Departments , Hacettepe University , Beytepe , Ankara , Turkey
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Zhou W, Lu P, Sun L, Ji C, Dong J. Diffusion and binding of 5-fluorouracil in non-ionic hydrogels with interpolymer complexation. Int J Pharm 2012; 431:53-60. [PMID: 22531850 DOI: 10.1016/j.ijpharm.2012.04.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/24/2012] [Accepted: 04/08/2012] [Indexed: 12/25/2022]
Abstract
Hydrogen-bonded interpolymer complexes can be used for development of novel dosage forms. In this study, two types of crosslinked hydrogels, copolymer networks of N-vinyl pyrrolidone and acrylamide (PVP-co-PAM) and interpenetrating polymer networks (IPN) composed of crosslinked PVP-co-PAM and poly(vinyl alcohol) (PVA), were synthesized at three different degrees of crosslinking. The side chain groups in such polymers can form non-ionic complexes through H-bonding, resulting in additional "crosslinks" in the hydrogels. Both kinds of hydrogels have significantly larger swelling sensitivities than the networks formed with ionizable side chains. In the IPNs, introduction of the PVA chains into the PVP-co-PAM networks raises the permeability, indicating more open pores. The permeability decreases with the increasing degree of crosslinking of the copolymer. For probing the drug binding in the hydrogels, Fourier transform infrared spectra (FTIR) difference spectroscopy indicated the presence of significant H-bonding interactions between 5-fluorouracil (5-FU) and the side chains of the polymers. Such interactions are larger in the PVP-co-PAM copolymers than in the IPN hydrogels, thereby causing an additional source of the slower release kinetics in the copolymer hydrogels as revealed by the Peppas model, albeit both types of the networks followed a non-Fickian transport mechanism.
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Affiliation(s)
- Wenbin Zhou
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
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Pulat M, Eksi H, Abbasoglu U. Fluconazole release from hydrogels including acrylamide-acrylic acid-itaconic acid, and their microbiological interactions. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 19:193-205. [DOI: 10.1163/156856208783432480] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Mehlika Pulat
- a Gazi Universitesi Fen, Edebiyat Fakültesi, Kimya Bölümü, Teknikokullar, Ankara, Turkey
| | - Haslet Eksi
- b Gazi Universitesi Fen, Edebiyat Fakültesi, Kimya Bölümü, Teknikokullar, Ankara, Turkey
| | - Ufuk Abbasoglu
- c Gazi Universitesi Fen, Edebiyat Fakültesi, Kimya Bölümü, Teknikokullar, Ankara, Turkey
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Mequanint K, Sheardown H. 2-Methacryloyloxyethyl N-butylcarbamate: a new co-monomer for synthesis of polyurethane hydrogels with improved mechanical properties for biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:1303-18. [PMID: 16268255 DOI: 10.1163/156856205774269548] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Hydrogels with tunable hydrophilic and mechanical properties were synthesized by the free radical polymerization of 2-hydroxyethyl methacrylate (HEMA) and 2-methacryloyloxyethyl N-butylcarbamate. The resulting hydrogels were investigated for their equilibrium water content, sessile drop water contact angles, gel fraction, mechanical properties and protein adsorption. Results indicated that co-polymer hydrogels have good hydrophilicity and that, with the incorporation of the 2-methacryloyloxyethyl N-butylcarbamate, mechanical properties could be improved significantly. without affecting other important properties. Lysozyme and albumin adsorption experiments demonstrated that, similar to most hydrogel materials, the co-polymer hydrogels adsorb more lysozyme than albumin and that the adsorption was dependent on hydrophilicity. The control poly(HEMA) hydrogels were found to adsorb more protein than the co-polymer hydrogels; this is thought to be primarily a consequence of protein absorption rather than protein adsorption.
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Affiliation(s)
- K Mequanint
- Department of Chemical Engineering, McMaster University, Hamilton ON, L8S 4L7, Canada
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Imani R, Emami SH, Moshtagh PR, Baheiraei N, Sharifi AM. Preparation and Characterization of Agarose-Gelatin Blend Hydrogels as a Cell Encapsulation Matrix: An In-Vitro Study. J MACROMOL SCI B 2012. [DOI: 10.1080/00222348.2012.657110] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Rana Imani
- a Department of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
- b Department of Pharmacology , Razi Institute for Drug Research, Tehran University of Medical Sciences , Tehran , Iran
| | - Shahriar Hojjati Emami
- a Department of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
| | - Parisa Rahnama Moshtagh
- a Department of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
- b Department of Pharmacology , Razi Institute for Drug Research, Tehran University of Medical Sciences , Tehran , Iran
| | - Nafiseh Baheiraei
- a Department of Biomedical Engineering , Amirkabir University of Technology , Tehran , Iran
| | - Ali Mohammad Sharifi
- b Department of Pharmacology , Razi Institute for Drug Research, Tehran University of Medical Sciences , Tehran , Iran
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Appel EA, del Barrio J, Loh XJ, Dyson J, Scherman OA. High molecular weight polyacrylamides by atom transfer radical polymerization: Enabling advancements in water-based applications. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.25041] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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31
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Nagase K, Kobayashi J, Kikuchi A, Akiyama Y, Kanazawa H, Okano T. Thermoresponsive polymer brush on monolithic-silica-rod for the high-speed separation of bioactive compounds. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:10830-10839. [PMID: 21740046 DOI: 10.1021/la201360p] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Poly(N-isopropylacrylamide), one of the most utilized thermoresponsive polymers, brush-grafted monolithic-silica columns were prepared through surface-initiated atom transfer radical polymerization (ATRP) for effective thermoresponsive-chromatography matrices. ATRP initiator was grafted on monolithic silica-rod surfaces by flowing a toluene solution containing ATRP initiator into monolithic silica-rod columns. N-Isopropylacrylamide (IPAAm) monomer and CuCl/CuCl(2)/Me(6)TREN, an ATRP catalytic system, were dissolved in 2-propanol, and the reaction solution was pumped into the preprepared initiator-modified columns at 25 °C for 16 h. The constructed PIPAAm-brush structure on the monolithic silica-rod surface was confirmed by XPS, elemental analysis, SEM observation, and GPC measurement of grafted PIPAAm. The prepared monolithic silica-rod columns were also characterized by chromatographic analysis. PIPAAm-brush-modified monolithic silica-rod columns were able to separate hydrophobic steroids with a short analysis time (10 min), compared to PIPAAm-brush-modified silica-beads-packed columns, because of the horizontally limited diffusion path length of monolithic supporting materials. Additionally, diluted PIPAAm-brush monolithic silica-rod column gave a further shorting analysis time (5 min). These results indicated (1) surface-initiated ATRP constructed PIPAAm-brush structures on monolithic silica-rod surfaces and (2) PIPAAm-brush grafted monolithic silica-rod column prepared by ATRP was a promising tool for analyzing hydrophobic-bioactive compounds with a short analysis time.
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Affiliation(s)
- Kenichi Nagase
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, TWIns, 8-1 Kawadacho, Shinjuku, Tokyo 162-8666, Japan
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32
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Tuntikulwattana S, Sinchaipanid N, Ketjinda W, Williams DB, Mitrevej A. Fabrication of chitosan--polyacrylic acid complexes as polymeric osmogents for swellable micro/nanoporous osmotic pumps. Drug Dev Ind Pharm 2011; 37:926-33. [PMID: 21417602 DOI: 10.3109/03639045.2010.550300] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIM The aims of this study were to prepare and evaluate chitosan-polyacrylic acid complex (CS-PAA) as polymeric osmogents for swellable micro/nanoporous osmotic pump propranolol tablets. METHODS The complexes were characterized and evaluated for their swelling characteristics. The selected complexes were incorporated into the core propranolol tablets as polymeric osmogents. The core tablets were formulated, compressed as monolithic and two-layered tablets, and finally coated with cellulose acetate containing PEG 400 and PVP K30 as plasticizers and pore formers, respectively. As a final point, the drug release was determined. RESULTS A direct correlation was found between the CS content in the complex and the maximum swelling force and swelling ratio of the complex mixture. In vitro drug release revealed that the percent drug release increased with the amount of osmogent in the two-layered tablets. Drug release could be prolonged up to 12h and conformed to the USP 31 criteria. In contrast, percent release decreased with the increasing amount of complexes in monolithic tablets. It was postulated that two opposing mechanisms were involved. Following water uptake, the complexes of polymers swelled and pushed the drug out of the tablets, and the drug bound to the polymer network and remained in the tablets. CONCLUSIONS The results indicated that the complex of CS-PAA at optimal proportion and amount was a promising polymeric osmogent for a zero-order controlled release from two-layered swellable micro/nanoporous osmotic pump tablets.
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Affiliation(s)
- Siracha Tuntikulwattana
- Department of Industrial Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
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Pan T, He W, Li L, Jiang W, He C, Tao J. Dual thermo‐ and pH‐sensitive network‐grafted hydrogels formed by macrocrosslinker as drug delivery system. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24645] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ting‐Ting Pan
- Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wei‐Dong He
- Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Li‐Ying Li
- Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wen‐Xing Jiang
- Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chen He
- Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jing Tao
- Department of Polymer Science and Engineering, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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Nagase K, Kobayashi J, Kikuchi A, Akiyama Y, Kanazawa H, Okano T. Thermally-modulated on/off-adsorption materials for pharmaceutical protein purification. Biomaterials 2011; 32:619-27. [DOI: 10.1016/j.biomaterials.2010.09.012] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Accepted: 09/06/2010] [Indexed: 10/19/2022]
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35
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Pulat M, Tan N, Onurdağ FK. Swelling dynamics of IPN hydrogels including acrylamide-acrylic acid-chitosan and evaluation of their potential for controlled release of piperacillin-tazobactam. J Appl Polym Sci 2010. [DOI: 10.1002/app.33169] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Harisha RS, Hosamani KM, Keri RS, Shelke N, Wadi VK, Aminabhavi TM. Controlled release of 5-flurouracil from biomedical polyurethanes. J CHEM SCI 2010. [DOI: 10.1007/s12039-010-0024-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang ZC, Xu XD, Chen CS, Yun L, Song JC, Zhang XZ, Zhuo RX. In situ formation of thermosensitive PNIPAAm-based hydrogels by Michael-type addition reaction. ACS APPLIED MATERIALS & INTERFACES 2010; 2:1009-1018. [PMID: 20423120 DOI: 10.1021/am900712e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
To investigate the possibility of in situ thermosensitive hydrogel formation via Michael-type addition reaction, we designed and prepared thiol- and vinyl-modified poly(N-isopropylacrylamide) (PNIPAAm)-based copolymers. When the solutions of these two kinds of PNIPAAm-based copolymers were mixed at physiological temperature (37 degrees C), a physical gelation resulting from the hydrophobic aggregation of PNIPAAm based copolymers and chemical cross-linking between thiol and vinyl functional groups or so-called chemical gelation occurred, resulting in the formation of a three-dimensional hydrogel. Because all the gelations were performed at a high temperature (above LCSTs of the PNIPAAm based copolymers), these in situ formed hydrogels presented heterogeneous network structures, resulting in an improved thermosensitivity in comparison with the conventional one.
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Affiliation(s)
- Zong-Chun Wang
- Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
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38
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Hoare T, Zurakowski D, Langer R, Kohane DS. Rheological blends for drug delivery. I. Characterization in vitro. J Biomed Mater Res A 2010; 92:575-85. [PMID: 19235215 DOI: 10.1002/jbm.a.32392] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Rheological blends of hyaluronic acid (HA) and hydroxypropylmethyl cellulose (HPMC) are attractive as injectable drug delivery vehicles given their shear thinning viscoelastic rheological properties and excellent biocompatibility. In this study, the rheological and water binding properties of HA-HPMC blends are investigated to optimize both the injectability and the drug release kinetics of polymer blends. The time required to release 75% of a bupivacaine payload was correlated with the overall polymer concentration of the blend and the water binding properties of the constituent polymers. This correlation enables the tuning of drug release kinetics over a range of several hours according to the total concentration and ratio of the polymers used in the blend. The injectability is also promoted by polymer blending; HPMC suppresses the high yield stress of HA solutions, whereas HA induces flow instabilities in the needle, which facilitate blend injection via plug flow. Consequently, significantly higher polymer concentrations can be injected as blends compared with that achievable with either of the polymers alone, extending the potential of these polymers for drug delivery.
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Affiliation(s)
- Todd Hoare
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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39
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Liang L, Xu XD, Chen CS, Fang JH, Jiang FG, Zhang XZ, Zhuo RX. Evaluation of the biocompatibility of novel peptide hydrogel in rabbit eye. J Biomed Mater Res B Appl Biomater 2010; 93:324-32. [DOI: 10.1002/jbm.b.31562] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Pulat M, Asıl D. Fluconazole release through semi-interpenetrating polymer network hydrogels based on chitosan, acrylic acid, and citraconic acid. J Appl Polym Sci 2009. [DOI: 10.1002/app.30281] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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42
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Abdekhodaie M, Wu X. Modeling of a glucose sensitive composite membrane for closed-loop insulin delivery. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.02.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Wu DQ, Qiu F, Wang T, Jiang XJ, Zhang XZ, Zhuo RX. Toward the development of partially biodegradable and injectable thermoresponsive hydrogels for potential biomedical applications. ACS APPLIED MATERIALS & INTERFACES 2009; 1:319-327. [PMID: 20353219 DOI: 10.1021/am8000456] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A series of hydrogels containing a biodegradable dextran (Dex) chain grafted with a hydrophobic poly(-caprolactone)-2-hydroxylethyl methacrylate (PCL-HEMA) chain and a thermoresponsive poly(N-isopropylacrylamide) (PNIPAAm) chain were synthesized. The molecular weight of PCL-HEMA was determined by gel permeation chromatography, and the inner morphology of the hydrogel was observed by scanning electron microscopy. The release profiles from the hydrogels were investigated using bovine serum albumen as a model drug. It was found that the release behavior could be adjusted by varying the composition of the hydrogel. In vitro cytotoxicity studies of the hydrogels showed that the copolymer Dex-PCL-HEMA/PNIPAAm exhibited low cytotoxicity. The in vivo degradation and histological studies demonstrated that the hydrogels had good biocompatibility and were promising for use as an injectable polymeric scaffold for tissue engineering applications.
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Affiliation(s)
- De-Qun Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People's Republic of China
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Soussan E, Cassel S, Blanzat M, Rico-Lattes I. Wirkstofftransport mit weicher Materie: Matrix- und Vesikelvektoren. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200802453] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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45
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Soussan E, Cassel S, Blanzat M, Rico-Lattes I. Drug Delivery by Soft Matter: Matrix and Vesicular Carriers. Angew Chem Int Ed Engl 2009; 48:274-88. [DOI: 10.1002/anie.200802453] [Citation(s) in RCA: 360] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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46
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Wang ZC, Xu XD, Chen CS, Wang GR, Cheng SX, Zhang XZ, Zhuo RX. In situ formation of thermosensitive P(NIPAAm-co-GMA)/PEI hydrogels. REACT FUNCT POLYM 2009. [DOI: 10.1016/j.reactfunctpolym.2008.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Hu Y, Zhou X, Lu Y, Hu C, Hu X. Novel biodegradable hydrogels based on pachyman and its derivatives for drug delivery. Int J Pharm 2008; 371:89-98. [PMID: 19215726 DOI: 10.1016/j.ijpharm.2008.12.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 12/14/2008] [Accepted: 12/17/2008] [Indexed: 10/21/2022]
Abstract
Two kinds of hydrogels were synthesized based on pachyman and its hydroxyethyl derivatives (hydroxyethyl pachyman, HEP) by the crosslinking reactions with confunctional crosslinker agent epichlorohydrin (ECH). Hydrogels with different crosslinking ratio were obtained by varying the content of the crosslinker and the polymer. The structure and morphology of hydrogels were characterized and the pH-dependent swelling of hydrogels was confirmed to be strongly influenced by the polymer properties, structure and the crosslinker contents. In the swelling assays, the hydrogels based on pachyman exhibited significant pH sensitivity, while the hydrogels based on hydroxyethyl pachyman tended to have notable swelling capability. In the drug release study, two drugs salicylic acid and bovine serum albumin (BSA) were chosen as model drugs. The results indicated that both two kinds of hydrogels showed better drug sustained release behavior for protein drug BSA than salicylic acid. In addition, evaluated by two model equations, the drug transport mechanism showed anomalous in both two kinds of hydrogels. Importantly, this study offers an entirely new window of developing hydrogels based on this natural polysaccharide, which has great potential for using as a novel sustained release carrier for protein drugs.
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Affiliation(s)
- Yan Hu
- The State Key Laboratory of Virology, College of Pharmacy, Wuhan University, Wuhan 430072, PR China
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48
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Xu XD, Chen CS, Lu B, Wang ZC, Cheng SX, Zhang XZ, Zhuo RX. Modular Synthesis of Thermosensitive P(NIPAAm-co
-HEMA)/β
-CD Based Hydrogels via Click Chemistry. Macromol Rapid Commun 2008; 30:157-64. [DOI: 10.1002/marc.200800671] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2008] [Accepted: 11/03/2008] [Indexed: 12/19/2022]
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49
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Xu X, Chen C, Wang Z, Wang G, Cheng S, Zhang X, Zhuo R. “Click” chemistry forin situformation of thermoresponsive P(NIPAAm‐co‐HEMA)‐based hydrogels. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22857] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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50
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Joan Taylor M, Taylor P. Overview: Biologicals & Immunologicals: Novel drug delivery systems. Expert Opin Ther Pat 2008. [DOI: 10.1517/13543776.4.9.1083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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