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Maiti S, Maji B, Yadav H. Progress on green crosslinking of polysaccharide hydrogels for drug delivery and tissue engineering applications. Carbohydr Polym 2024; 326:121584. [PMID: 38142088 DOI: 10.1016/j.carbpol.2023.121584] [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] [Received: 09/20/2023] [Revised: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 12/25/2023]
Abstract
Natural polysaccharides are being studied for their biocompatibility, biodegradability, low toxicity, and low cost in the fabrication of various hydrogel devices. However, due to their insufficient physicochemical and mechanical qualities, polysaccharide hydrogels alone are not acceptable for biological applications. Various synthetic crosslinkers have been tested to overcome the drawbacks of standalone polysaccharide hydrogels; however, the presence of toxic residual crosslinkers, the generation of toxic by-products following biodegradation, and the requirement of toxic organic solvents for processing pose challenges in achieving the desired non-toxic biomaterials. Natural crosslinkers such as citric acid, tannic acid, vanillin, gallic acid, ferulic acid, proanthocyanidins, phytic acid, squaric acid, and epigallocatechin have been used to generate polysaccharide-based hydrogels in recent years. Various polysaccharides, including cellulose, alginate, pectin, hyaluronic acid, and chitosan, have been hydrogelized and investigated for their potential in drug delivery and tissue engineering applications using natural crosslinkers. We attempted to provide an overview of the synthesis of polysaccharide-based hydrogel systems (films, complex nanoparticles, microspheres, and porous scaffolds) based on green crosslinkers, as well as a description of the mechanism of crosslinking and properties with a special emphasis on drug delivery, and tissue engineering applications.
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Affiliation(s)
- Sabyasachi Maiti
- Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh-484887, India.
| | - Biswajit Maji
- Department of Chemistry, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh 484887, India
| | - Harsh Yadav
- Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, Madhya Pradesh-484887, India
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Rashid H, Lucas H, Busse K, Kressler J, Mäder K, Trutschel ML. Development of Poly(sorbitol adipate)- g-poly(ethylene glycol) Mono Methyl Ether-Based Hydrogel Matrices for Model Drug Release. Gels 2023; 10:17. [PMID: 38247740 PMCID: PMC10815636 DOI: 10.3390/gels10010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/23/2024] Open
Abstract
Hydrogels were prepared by Steglich esterification and by crosslinking pre-synthesized poly(sorbitol adipate)-graft-poly(ethylene glycol) mono methyl ether (PSA-g-mPEG) using different-chain-length-based disuccinyl PEG. PSA and PSA-g-mPEG were investigated for polymer degradation as a function of time at different temperatures. PSA-g-mPEG hydrogels were then evaluated for their most crucial properties of swelling that rendered them suitable for many pharmaceutical and biomedical applications. Hydrogels were also examined for their Sol-Gel content in order to investigate the degree of cross-linking. Physical structural parameters of the hydrogels were theoretically estimated using the modified Flory-Rehner theory to obtain approximate values of polymer volume fraction, the molecular weight between two crosslinks, and the mesh size of the hydrogels. X-ray diffraction was conducted to detect the presence or absence of crystalline regions in the hydrogels. PSA-g-mPEG hydrogels were then extensively examined for higher and lower molecular weight solute release through analysis by fluorescence spectroscopy. Finally, the cytotoxicity of the hydrogels was also investigated using a resazurin reduction assay. Experimental results show that PSA-g-mPEG provides an option as a biocompatible polymer to be used for pharmaceutical applications.
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Affiliation(s)
- Haroon Rashid
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Henrike Lucas
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Karsten Busse
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Jörg Kressler
- Department of Chemistry, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Karsten Mäder
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
| | - Marie-Luise Trutschel
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, D-06120 Halle (Saale), Germany
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Baloch A, Ahmad M, Minhas MU, Badshah SF, Barkat K, Suhail M, Malik NS. Fabrication of swellable PEGylated hydrogel by free radical polymerization for controlled delivery of non-steroidal anti-inflammatory drug; characterization and statistical analysis. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2134066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ariba Baloch
- Deparment of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Mahmood Ahmad
- Deparment of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | | | - Syed Faisal Badshah
- Deparment of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
- Faculty of Pharmacy, University of Lahore, Lahore, Pakistan
| | - Kashif Barkat
- Faculty of Pharmacy, University of Lahore, Lahore, Pakistan
| | - Muhammad Suhail
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - Nadia Shamshad Malik
- Department of Pharmacy, Capital University of Science and Technology, Islamabad, Pakistan
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Methotrexate-Loaded Gelatin and Polyvinyl Alcohol (Gel/PVA) Hydrogel as a pH-Sensitive Matrix. Polymers (Basel) 2021; 13:polym13142300. [PMID: 34301057 PMCID: PMC8309343 DOI: 10.3390/polym13142300] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022] Open
Abstract
The aim was to formulate and evaluate Gel/PVA hydrogels as a pH-sensitive matrix to deliver methotrexate (MTX) to colon. The primed Gel/PVA hydrogels were subjected to evaluation for swelling behavior, diffusion coefficient, sol-gel characteristic and porosity using an acidic (pH 1.2) and phosphate buffer (PBS) (pH 6.8 & pH 7.4) media. Fourier transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA) were performed to evaluate the chemical compatibility of the Gel/PVA hydrogel. The shape alteration and release of Gel/PVA hydrogel was conducted at pH 1.2, pH 6.8 and pH 7.4. The drug release kinetic mechanism was determined using various kinetic equations. The physicochemical evaluation tests and drug release profile results were found to be significant (p < 0.01). However, it was dependent on the polymers' concentration, the pH of the release media and the amount of the cross-linking agent. Hydrogels containing the maximum amount of gel showed a dynamic equilibrium of 10.09 ± 0.18 and drug release of 93.75 ± 0.13% at pH 1.2. The kinetic models showed the release of MTX from the Gel/PVA hydrogel was non-Fickian. The results confirmed that the newly formed Gel/PVA hydrogels are potential drug delivery systems for a controlled delivery of MTX to the colon.
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Mansour H, Khodair AI, Elsiginy SM, Elghanam AE. Design, synthesis, characterization and biological evaluation of Thieno[2,3-b]pyridines-chitosan nanocomposites as drug delivery systems for colon targeting. Carbohydr Res 2020; 492:107990. [PMID: 32259706 DOI: 10.1016/j.carres.2020.107990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/10/2020] [Accepted: 03/23/2020] [Indexed: 12/17/2022]
Abstract
Thieno[2,3-b]pyridine derivatives DATPa-c have been synthesized based on Thorpe-Ziegler Cyclization. The reaction of arylidene malononitrile derivatives (Ia-c) with thiocyanoacetamide (II) in basic medium (piperidine) followed by alkylation using ethyl chloroacetate and finally, cyclization in sodium ethoxide yielded DATPa-c. Thieno[2,3-b]pyridine-chitosan nanocomposites CS-DATPa-c were prepared from the DATPa-c and CS nanoparticles using sodium tripolyphosphate (TPP). CS-DATPa-c nanocomposites were characterized using FTIR, TEM and XRD techniques and showed a relatively narrow size distribution of monodispersed nanoparticles with the average size of 14-78 nm. The in vitro release studies of CS-DAΤPa-c nanocomposites were investigated and showed that the drug release rate is pH-dependent and the trend is as follows: basic > neutral > acidic. The faster release rate in basic medium effectively prolongs drug delivery in gastric pH. Additionally, the antibacterial investigation showed that DATPa-c and CS-DATPa-c nanocomposites exhibited antibacterial activity against both Gram-positive and Gram-negative bacteria but CS-DATPa-c nanocomposites showed much higher antibacterial activity compared to the DATPa-c, which in agreement with the particle size measurements as DATPa-c are in the bulky structure whereas, CS-DATPa-c are in the nanostructure. The results may have applications of drug design for colon targeting.
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Affiliation(s)
- Hanaa Mansour
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt.
| | - Ahmed I Khodair
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Samia M Elsiginy
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Amal E Elghanam
- Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
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Xing L, Fan YT, Shen LJ, Yang CX, Liu XY, Ma YN, Qi LY, Cho KH, Cho CS, Jiang HL. pH-sensitive and specific ligand-conjugated chitosan nanogels for efficient drug delivery. Int J Biol Macromol 2019; 141:85-97. [DOI: 10.1016/j.ijbiomac.2019.08.237] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 05/26/2019] [Accepted: 08/28/2019] [Indexed: 01/29/2023]
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Khlibsuwan R, Pongjanyakul T. Particle agglomeration of chitosan-magnesium aluminum silicate nanocomposites for direct compression tablets. Int J Pharm 2017; 535:410-419. [PMID: 29155229 DOI: 10.1016/j.ijpharm.2017.11.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 10/18/2022]
Abstract
Exfoliated nanocomposites of chitosan-magnesium aluminum silicate (CS-MAS) particles are characterized by good compressibility but poor flowability. Thus, the aims of this study were to investigate agglomerates of CS-MAS nanocomposites prepared using the agglomerating agents water, ethanol, or polyvinylpyrrolidone (PVP) for flowability enhancement and to evaluate the agglomerates obtained as direct compression fillers for tablets. The results showed that the addition of agglomerating agents did not affect crystallinity, but slightly influenced thermal behavior of the CS-MAS nanocomposites. The agglomerates prepared using water were larger than those prepared using 95% ethanol because high swelling of the layer of chitosonium acetate occurred, allowing formation of solid bridges and capillary force between particles, leading to higher flowability and particle strength. Incorporation of PVP resulted in larger agglomerates with good flowability and high strength due to the binder hardening mechanism. The tablets prepared from agglomerates using water showed lower hardness, shorter disintegration times and faster drug release than those using 95% ethanol. In contrast, greater hardness and more prolonged drug release were obtained from the tablets prepared from agglomerates using PVP. Additionally, the agglomerates of CS-MAS nanocomposites showed good carrying capacity and provided desirable characteristics of direct compression tablets.
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Affiliation(s)
- Rapee Khlibsuwan
- Division of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Thaned Pongjanyakul
- Division of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand.
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Yang HC, Gong JL, Zeng GM, Zhang P, Zhang J, Liu HY, Huan SY. Polyurethane foam membranes filled with humic acid-chitosan crosslinked gels for selective and simultaneous removal of dyes. J Colloid Interface Sci 2017; 505:67-78. [DOI: 10.1016/j.jcis.2017.05.075] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/22/2017] [Accepted: 05/23/2017] [Indexed: 10/19/2022]
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Sarfraz RM, Ahmad M, Mahmood A, Akram MR, Abrar A. Development of β-cyclodextrin-based hydrogel microparticles for solubility enhancement of rosuvastatin: an in vitro and in vivo evaluation. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:3083-3096. [PMID: 29123380 PMCID: PMC5661467 DOI: 10.2147/dddt.s143712] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to enhance the solubility of rosuvastatin (RST) calcium by developing β-cyclodextrin-g-poly(2-acrylamido-2-methylpropane sulfonic acid [AMPS]) hydrogel microparticles through aqueous free-radical polymerization technique. Prepared hydrogel microparticles were characterized for percent entrapment efficiency, solubility studies, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermal gravimetric analysis, powder X-ray diffraction, scanning electron microscopy, zeta size and potential, swelling and release studies. Formulations (HS1–HS9) have shown entrapment efficiency between 83.50%±0.30% and 88.50%±0.25%, and optimum release was offered by formulation HS7 at both pH levels, ie, 1.2 (89%) and 7.4 (92%). The majority of microparticles had a particle size of less than 500 µm and zeta potential of −37 mV. Similarly, optimum solubility, ie, 10.66-fold, was determined at pH 6.8 as compared to pure RST calcium, ie, 7.30-fold. In vivo studies on fabricated hydrogel microparticulate system in comparison to pure drug were carried out, and better results regarding pharmacokinetic parameters were seen in the case of hydrogel microparticles. A potential approach for solubility enhancement of RST calcium and other hydrophobic moieties was successfully developed.
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Affiliation(s)
| | - Mahmood Ahmad
- Faculty of Pharmacy and Alternative Medicines, The Islamia University of Bahawalpur, Bahawalpur
| | - Asif Mahmood
- Institute of Pharmacy, Physiology and Pharmacology, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | | | - Asad Abrar
- Faculty of Pharmacy and Alternative Medicines, The Islamia University of Bahawalpur, Bahawalpur
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Development of ibuprofen microspheres using acetylated plantain starches as polymer for sustained release. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0345-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Effect of ionic and covalent crosslinking agents on properties of chitosan beads and sorption effectiveness of Reactive Black 5 dye. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.03.007] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dey SK, De PK, De A, Ojha S, De R, Mukhopadhyay AK, Samanta A. Floating mucoadhesive alginate beads of amoxicillin trihydrate: A facile approach for H. pylori eradication. Int J Biol Macromol 2016; 89:622-31. [PMID: 27177460 DOI: 10.1016/j.ijbiomac.2016.05.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/03/2016] [Accepted: 05/08/2016] [Indexed: 12/13/2022]
Abstract
This study investigates the design of sunflower oil entrapped floating and mucoadhesive beads of amoxicillin trihydrate using sodium alginate and hydroxypropyl methylcellulose as matrix polymers and chitosan as coating polymer to localize the antibiotic at the stomach site against Helicobacter pylori. Beads prepared by ionotropic gellation technique were evaluated for different physicochemical, in-vitro and in-vivo properties. Beads of all batches were floated for >24h with a maximum lag time of 46.3±3.2s. Scanning electron microscopy revealed that the beads were spherical in shape with few oil filled channels distributed throughout the surfaces and small pocket structures inside the matrix confirming oil entrapment. Prepared beads showed good mucoadhesiveness of 75.7±3.0% to 85.0±5.5%. The drug release profile was best fitted to Higuchi model with non fickian driven mechanism. The optimized batch showed 100% Helicobacter pylori growth inhibition in 15h in in-vitro culture. Furthermore, X-ray study in rabbit stomach confirmed the gastric retention of optimized formulation. The results exhibited that formulated beads may be preferred to localize the antibiotic in the gastric region to allow more availability of antibiotic at gastric mucus layer acting on Helicobacter pylori, thereby improving the therapeutic efficacy.
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Affiliation(s)
- Sanjoy Kumar Dey
- Division of Microbiology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Pintu Kumar De
- Department of Pharmaceutics, Dr. B. C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur 713206, India
| | - Arnab De
- Division of Microbiology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Souvik Ojha
- Department of Pharmaceutics, Dr. B. C. Roy College of Pharmacy and Allied Health Sciences, Bidhan Nagar, Durgapur 713206, India
| | - Ronita De
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beleghata, Kolkata 700010, India
| | - Asish Kumar Mukhopadhyay
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Beleghata, Kolkata 700010, India
| | - Amalesh Samanta
- Division of Microbiology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India.
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Xu X, Qu T, Fan L, Chen X, Gao M, Zhang J, Guo T. Preparation of pH- and magnetism-responsive sodium alginate/Fe3O4@HNTs nanocomposite beads for controlled release of granulysin. RSC Adv 2016. [DOI: 10.1039/c6ra22827e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
pH- and magnetism-responsive sodium alginate/Fe3O4@halloysite nanotube nanocomposite beads were prepared for the controlled release of granulysin.
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Affiliation(s)
- Xianghong Xu
- Department of Biotherapy Center
- Gansu Provincial Hospital
- Lanzhou
- China
| | - Tao Qu
- Department of Biotherapy Center
- Gansu Provincial Hospital
- Lanzhou
- China
| | - Ling Fan
- Key Laboratory of Clay Mineral Applied Research of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Xiaomei Chen
- Department of Biotherapy Center
- Gansu Provincial Hospital
- Lanzhou
- China
| | - Men Gao
- Department of Biotherapy Center
- Gansu Provincial Hospital
- Lanzhou
- China
| | - Junping Zhang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
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Fattahpour S, Shamanian M, Tavakoli N, Fathi M, Sheykhi SR, Fattahpour S. Design and optimization of alginate−chitosan−pluronic nanoparticles as a novel meloxicam drug delivery system. J Appl Polym Sci 2015. [DOI: 10.1002/app.42241] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Shohreh Fattahpour
- Department of Materials Engineering; Biomaterials Research Group, Isfahan University of Technology; Isfahan 841456-83111 Iran
- Isfahan Pharmaceutical Sciences Research Centre, Isfahan University of Medical Sciences; Isfahan 81745-359 Iran
| | - Morteza Shamanian
- Department of Materials Engineering; Biomaterials Research Group, Isfahan University of Technology; Isfahan 841456-83111 Iran
| | - Naser Tavakoli
- Isfahan Pharmaceutical Sciences Research Centre, Isfahan University of Medical Sciences; Isfahan 81745-359 Iran
- Department of Pharmaceutics; School of Pharmacy, Isfahan University of Medical Sciences; Isfahan Iran
| | - Mohammadhossein Fathi
- Department of Materials Engineering; Biomaterials Research Group, Isfahan University of Technology; Isfahan 841456-83111 Iran
- Dental Materials Research Center, Isfahan University of Medical Sciences; Isfahan Iran
| | - Saeid Reza Sheykhi
- Isfahan Pharmaceutical Sciences Research Centre, Isfahan University of Medical Sciences; Isfahan 81745-359 Iran
| | - Shirin Fattahpour
- Department of Biochemistry; Rafsanjan University of Medical Sciences; Rafsanjan Iran
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Preparation and characterization of chitosan gel beads crosslinked by organic titanium. JOURNAL OF POLYMER RESEARCH 2015. [DOI: 10.1007/s10965-015-0693-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chang A. pH-sensitive starch-g-poly(acrylic acid)/sodium alginate hydrogels for controlled release of diclofenac sodium. IRANIAN POLYMER JOURNAL 2015. [DOI: 10.1007/s13726-015-0311-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Yeng CM, Husseinsyah S, Ting SS. A comparative study of different crosslinking agent-modified chitosan/corn cob biocomposite films. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1305-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Perchyonok VT, Zhang S, Grobler SR, Oberholzer TG. Insights into and relative effect of chitosan-H, chitosan-H-propolis, chitosan-H-propolis-nystatin and chitosan-H-nystatin on dentine bond strength. Eur J Dent 2014; 7:412-418. [PMID: 24932114 PMCID: PMC4053664 DOI: 10.4103/1305-7456.120666] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE The purpose of the study was to design and evaluate novel functional chitosan hydrogels (chitosan-H-propolis, chitosan-H-propolis-nystatin and chitosan-H-nystatin) by using the chitosan-H polymer as "dual function restorative materials". MATERIALS AND METHODS The nystatin/antioxidant carrier gel was prepared by dispersion of the corresponding component in glycerol and 3% acetic acid with 5% chitosan gelling agent was then added to the dispersion with continuous mixing. The natural bio-adhesive functionalized chitosan hydrogels were combined with built in drug delivery system and bio-actives such as propolis in order to increase the dentin bond strength capacity and maintain therapeutic properties of the alternative drug delivery system. The surface morphology, release behaviors (physiological pH and also in acidic conditions), stability of nystatin:antioxidant:chitosan and the effect of the hydrogels on the shear bond strength of dentin were also evaluated. STATISTICAL ANALYSIS USED Non-parametric ANOVA test was used to asses significance of higher shear bond values than dentine treated or not treated with phosphoric acid. RESULTS The release of both nystatin and propolis confer the added benefit of dual action of a functional therapeutic delivery when comparing the newly designed chitosan-based hydrogel restorative materials to commercially available nystatin alone. Neither the release of nystatin nor the antioxidant stability was affected by storage. Chitosan-H, chitosan-propolis, chitosan-nystatin and chitosan-nystatin-propolis treated dentine gives significantly (P < 0.05) higher shear bond values (P < 0.05) than dentine treated or not treated with phosphoric acid. CONCLUSION The added benefits of their unique functionality involve increased dentin adhesive bond strengths (after 24 h and after 6 months) and positive influence on the nystatin release. Nystatin was a model therapeutic agent, evaluating the concept of using functional materials as carriers for pro-drugs as well as displaying a certain degree of defence mechanism for free radical damage of the novel functional drug delivery. Overall, there was an insignificant relapse in the shear bond strength after 6 months.
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Affiliation(s)
- Victoria Tamara Perchyonok
- Department of Research and Innovations, VTPCHEM Pty. Ltd., Glenhuntly, Melbourne, 3163, Australia.,School of Dentistry and Oral Health, Griffith University, Gold Coast, Southport, 4215, QLD, Australia
| | - Shengmiao Zhang
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Sias R Grobler
- Oral and Dental Research Institute, Faculty of Dentistry, University of the Western Cape, Private Bag X1, Tygerberg 7505, Cape Town, South Africa
| | - Theunis G Oberholzer
- School of Dentistry and Oral Health, Griffith University, Gold Coast, Southport, 4215, QLD, Australia
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Khan S, Ranjha NM. Effect of degree of cross-linking on swelling and on drug release of low viscous chitosan/poly(vinyl alcohol) hydrogels. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1178-2] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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20
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Anirudhan TS, Rejeena SR. Poly(acrylic acid-co-acrylamide-co-2-acrylamido-2-methyl-1-propanesulfonic acid)-grafted nanocellulose/poly(vinyl alcohol) composite for thein vitrogastrointestinal release of amoxicillin. J Appl Polym Sci 2014. [DOI: 10.1002/app.40699] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Anirudhan TS, Rejeena SR. Synthesis and Characterization of Chitosan Based Multilayer and pH Sensitive Co-Polymeric System for the Targeted Delivery of 5-Fluorouracil, an In Vitro Study. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.854225] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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De Corte S, Bechstein S, Lokanathan AR, Kjems J, Boon N, Meyer RL. Comparison of bacterial cells and amine-functionalized abiotic surfaces as support for Pd nanoparticle synthesis. Colloids Surf B Biointerfaces 2013; 102:898-904. [DOI: 10.1016/j.colsurfb.2012.08.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 08/16/2012] [Accepted: 08/28/2012] [Indexed: 11/26/2022]
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23
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Design and development of an injectable in situ forming drug delivery system of methotrexate for the treatment of rheumatoid arthritis. J Drug Deliv Sci Technol 2013. [DOI: 10.1016/s1773-2247(13)50064-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhu X, Zhou D, Guan S, Zhang P, Zhang Z, Huang Y. Preparation and characterization of novel multi-core chitosan microspheres for stomach-specific delivery of hydrophilic antibiotics. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:983-990. [PMID: 22322786 DOI: 10.1007/s10856-012-4567-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 01/25/2012] [Indexed: 05/31/2023]
Abstract
Insufficient gastric mucosa drug concentration and short contact time were the main reason for the lack of eradication efficacy of Helicobacter pylori for peptic ulcer patients. Novel multi-core chitosan microspheres were prepared for stomach-specific delivery of hydrophilic antibiotics for the treatment of peptic ulcer. Chitosan microspheres with multiple Eudragit L100 cores were easily prepared by a new emulsification/coagulation encapsulating method. Swelling behaviors, surface amino groups and mucin absorption ability were investigated and the formulation that showed best mucoadhesive potential was adopted. The multi-core chitosan microspheres exhibited good mucoadhesiveness as well as controlled release manner for incorporated antibiotics in acidic environment. The release rate could be easily modulated with accumulative release ranging from 47.3 to 79.3% in 6 h. Accordingly, the multi-core chitosan microspheres could serve as a satisfactory vehicle for stomach-specific delivery of hydrophilic antibiotics.
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Affiliation(s)
- Xi Zhu
- Key Laboratory of Drug Targeting and Drug Delivery, Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People's Republic of China
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Xu S, Dong D, Wang WJ, Fu L, Xu A. Transferable crosslinked chitosan membranes for human melanocyte culture. J Biomed Mater Res A 2011; 100:673-83. [DOI: 10.1002/jbm.a.34001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 07/30/2011] [Accepted: 09/26/2011] [Indexed: 11/06/2022]
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Gao C, Liu M, Chen J, Chen C. Physicochemical characterization and drug release properties of PDMAEMA/OSA Semi-IPN hydrogels with microporous structure. POLYM ADVAN TECHNOL 2011. [DOI: 10.1002/pat.1887] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Barakat NS, Almurshedi AS. Design and development of gliclazide-loaded chitosan microparticles for oral sustained drug delivery: in-vitro/in-vivo evaluation. J Pharm Pharmacol 2011; 63:169-78. [DOI: 10.1111/j.2042-7158.2010.01214.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Abstract
Objectives
The objective of this study was to prepare gliclazide–chitosan microparticles with tripolyphosphate by ionic crosslinking.
Methods
Chitosan microparticles were produced by emulsification and ionotropic gelation. The effects of process variables including chitosan concentration, pH of tripolyphosphate solution, glutaraldehyde volume and release modifier agent such as pectin added to the tripolyphosphate crosslinking solution were evaluated. The microparticles were examined with scanning electron microscopy, infrared spectroscopy and differential scanning colorimetry. The serum glucose lowering effect of gliclazide microparticles was studied in streptozotocin-diabetic rabbits compared with the effect of pure gliclazide powder and gliclazide commercial tablets.
Key findings
The particle sizes of tripolyphosphate–chitosan microparticles were over the range 675–887 µm and the loading efficiency of drug was greater than 94.0%. In-vivo testing of the gliclazide–chitosan microparticles in diabetic rabbits demonstrated a significant antidiabetic effect of gliclazide–chitosan microparticles after 8 h that lasted for 18 h compared with gliclazide powder, which produced a maximum hypoglycaemic effect after 4 h.
Conclusions
The results suggests that gliclazide–chitosan microparticles are a valuable system for the sustained delivery of gliclazide.
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Affiliation(s)
- Nahla S Barakat
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Alanood S Almurshedi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Barakat NS, Almurshedi AS. Design and development of gliclazide-loaded chitosan for oral sustained drug delivery:In vitro/in vivoevaluation. J Microencapsul 2010; 28:122-33. [DOI: 10.3109/02652048.2010.535621] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Barakat NS, Almurshedi AS. Preparation and characterization of chitosan microparticles for oral sustained delivery of gliclazide: in vitro/in vivo evaluation. Drug Dev Res 2010. [DOI: 10.1002/ddr.20389] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Xing J, Deng L, Dong A. Chitosan/alginate nanoparticles stabilized by poloxamer for the controlled release of 5-fluorouracil. J Appl Polym Sci 2010. [DOI: 10.1002/app.32083] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Narkar M, Sher P, Pawar A. Stomach-specific controlled release gellan beads of acid-soluble drug prepared by ionotropic gelation method. AAPS PharmSciTech 2010; 11:267-77. [PMID: 20180053 DOI: 10.1208/s12249-010-9384-1] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2009] [Accepted: 01/23/2010] [Indexed: 01/05/2023] Open
Abstract
The purpose of the present work was the development and evaluation of stomach-specific controlled release mucoadhesive drug delivery system prepared by ionotropic gelation of gellan beads, containing acid-soluble drug amoxicillin trihydrate, using 3(2) factorial design with concentration of gellan gum and quantity of drug as variables. The study showed that beads prepared in alkaline cross-linking medium have higher entrapment efficiency than the acidic cross-linking medium. The entrapment efficiency was in the range of 32% to 46% w/w in acidic medium, which increased up to 60% to 90% w/w in alkaline medium. Batches with lowest, medium, and highest drug entrapment were subjected to chitosan coating to form a polyelectrolyte complex film. As polymer concentration increases, entrapment efficiency and particle size increases. Scanning electron microscopy revealed spherical but rough surface due to leaching of drug in acidic cross-linking solution, dense spherical structure in alkaline cross-linking solution, and rough surface of chitosan-coated beads with minor wrinkles. The in vitro drug release up to 7 h in a controlled manner following the Peppas model (r = 0.9998). In vitro and in vivo mucoadhesivity study showed that beads have good mucoadhesivity and more than 85% beads remained adhered to stomach mucosa of albino rat even after 7 h. In vitro growth inhibition study showed complete eradication of Helicobacter pylori. These results indicate that stomach-specific controlled release mucoadhesive system of amoxicillin gellan beads may be useful in H. pylori treatment.
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Zhang JP, Wang Q, Xie XL, Li X, Wang AQ. Preparation and swelling properties of pH-sensitive sodium alginate/layered double hydroxides hybrid beads for controlled release of diclofenac sodium. J Biomed Mater Res B Appl Biomater 2010; 92:205-14. [DOI: 10.1002/jbm.b.31507] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ma L, Liu M, Liu H, Chen J, Gao C, Cui D. Dual crosslinked pH- and temperature-sensitive hydrogel beads for intestine-targeted controlled release. POLYM ADVAN TECHNOL 2009. [DOI: 10.1002/pat.1434] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Preparation of oxidized sodium alginate-graft-poly((2-dimethylamino) ethyl methacrylate) gel beads and in vitro controlled release behavior of BSA. Int J Pharm 2009; 371:16-24. [DOI: 10.1016/j.ijpharm.2008.12.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2008] [Revised: 11/07/2008] [Accepted: 12/11/2008] [Indexed: 11/18/2022]
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