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Matchimabura N, Praparatana R, Issarachot O, Oungbho K, Wiwattanapatapee R. Development of raft-forming liquid formulations loaded with ginger extract-solid dispersion for treatment of gastric ulceration. Heliyon 2024; 10:e31803. [PMID: 38841494 PMCID: PMC11152664 DOI: 10.1016/j.heliyon.2024.e31803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 06/07/2024] Open
Abstract
Raft-forming liquid formulations incorporating ginger extract solid dispersion (GE-SD) were developed to achieve prolonged delivery of 6-gingerol in the stomach and thus increase the effectiveness of gastric ulcer treatment. The solubility of 6-gingerol in 0.1 N HCl (pH 1.2) was maximized (15 mg/mL) by combining ginger extract with PVP K30 at 1:3 w/w ratio to produce a solid dispersion. The nature of GE-SD was confirmed by PXRD and FT-IR analysis. PXRD pattern showed miscibility of GE and PVP K30 in amorphous solid dispersion and the FT-IR spectra confirmed the formation of hydrogen bond between GE and PVP K30. GE-SD-loaded raft-forming liquids were prepared using sodium alginate as a gel former and HPMC as a release-controlling agent. The formulations exhibited rapid floating behavior in 0.1 N HCl (<30 s) and remained afloat on the surface over 8 h. The formed raft structures provided sufficient strength (>7.5 g) and allowed sustained release of more than 70 % of the 6-gingerol content over 8 h in 0.1 N HCl. Raft-forming formulations incorporating ginger extract demonstrated anti-inflammatory activity by inhibiting nitric oxide production in LPS-stimulated RAW 264.7 macrophage cells (IC50 = 5.13 ± 0.07 μg/mL). Exposure to the formulations also had a significant cytotoxic effect on AGS human gastric adenocarcinoma cells with an IC50 of 17.45 ± 0.29 μg/mL. In addition, the raft-forming formulations enhanced the migratory behavior of L929 mouse fibroblasts in the scratch wound model. Taken together, these findings reveal the benefits of gastro-retentive, GE-SD-loaded raft-forming liquid formulations for improving the treatment of gastric ulcers.
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Affiliation(s)
- Nattawipa Matchimabura
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Rachanida Praparatana
- Faculty of Medical Technology, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Ousanee Issarachot
- Department of Pharmacy Technician, Sirindhorn College of Public Health Trang, Faculty of Public Health and Allied Health Sciences, Praboromarajchanok Institute, Trang, 92110, Thailand
| | - Kwunchit Oungbho
- Medical Science Research and Innovation, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
- Drug Delivery System Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Ruedeekorn Wiwattanapatapee
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hatyai, Songkhla, 90112, Thailand
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Calvert ND, Proulx S, Rodriguez-Navarro A, Ahmed T, Lehoux EA, Hincke MT, Catelas I. Development of hydrogel-based composite scaffolds containing eggshell particles for bone regeneration applications. J Biomed Mater Res B Appl Biomater 2024; 112:e35296. [PMID: 37702399 DOI: 10.1002/jbm.b.35296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 05/23/2023] [Accepted: 06/10/2023] [Indexed: 09/14/2023]
Abstract
This study describes the development and characterization of novel composite scaffolds, made of an alginate-chitosan hydrogel matrix containing eggshell (ES) particles, for bone tissue engineering applications. Scaffolds with ES particles, either untreated or treated with phosphoric acid to create a nanotextured particle surface, were compared to scaffolds without particles. Results indicate that the nanotexturing process exposed occluded ES proteins orthologous to those in human bone extracellular matrix. Scaffolds with ES or nanotextured ES (NTES) particles had a higher porosity (81 ± 4% and 89 ± 5%, respectively) than scaffolds without particles (59 ± 5%) (p = .002 and p < .001, respectively). Scaffolds with NTES particles had a larger median pore size (113 μm [interquartile range [IQ]: 88-140 μm]) than scaffolds with ES particles (94 μm [IQ: 75-112 μm]) and scaffolds without particles (99 μm [IQ: 74-135 μm]) (p < .001 and p = .011, respectively). The compressive modulus of the scaffolds with ES or NTES particles remained low (3.69 ± 0.70 and 3.14 ± 0.62 kPa, respectively), but these scaffolds were more resistant to deformation following maximum compression than those without particles. Finally, scaffolds with ES or NTES particles allowed better retention of human mesenchymal stem cells during seeding (53 ± 12% and 57 ± 8%, respectively, vs. 17 ± 5% for scaffolds without particles; p < .001 in both cases), as well as higher cell viability up to 21 days of culture (67 ± 17% and 61 ± 11%, respectively, vs. 15 ± 7% for scaffolds without particles; p < .001 in both cases). In addition, alkaline phosphatase (ALP) activity increased up to 558 ± 164% on day 21 in the scaffolds with ES particles, and up to 567 ± 217% on day 14 in the scaffolds with NTES particles (p = .006 and p = .002, respectively, relative to day 0). Overall, this study shows that the physicochemical properties of the alginate-chitosan hydrogel scaffolds with ES or NTES particles are similar to those of cancellous bone. In addition, scaffolds with particles supported early osteogenic differentiation and therefore represent a promising new bone substitute, especially for non-load bearing applications.
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Affiliation(s)
- Nicholas D Calvert
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Scott Proulx
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Tamer Ahmed
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Eric A Lehoux
- Department of Mechanical Engineering, Faculty of Engineering, University of Ottawa, Ottawa, Ontario, Canada
| | - Maxwell T Hincke
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Department of Innovation in Medical Education, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Isabelle Catelas
- Department of Mechanical Engineering, Faculty of Engineering, University of Ottawa, Ottawa, Ontario, Canada
- Department of Surgery, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Mukherjee K, Roy S, Giri TK. Effect of intragranular/extragranular tara gum on sustained gastrointestinal drug delivery from semi-IPN hydrogel matrices. Int J Biol Macromol 2023; 253:127176. [PMID: 37783254 DOI: 10.1016/j.ijbiomac.2023.127176] [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: 08/01/2023] [Revised: 09/20/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
The present research was undertaken to develop semi-IPN hydrogel matrix tablets of tara gum (TG) and carboxymethyl TG (CMTG) for sustained gastrointestinal delivery of highly water soluble tramadol hydrochloride (TH). The matrix tablets were developed by a hybrid process of wet granulation and direct compression technique. Carboxymethyl TG was crosslinked with dual cross-linking ions (Al3+/Ca2+). The uncross-linked component of the semi-IPN matrix was either incorporated within the granules (intragranular TG) or incorporated outside the granules (extragranular TG), prior to compression. The effect of intragranular/extragranular TG on the swelling, erosion and TH release characteristics from the semi-IPN hydrogel matrix tablets was investigated. The key finding of the investigation indicated that intragranular TG expedited TH release, while extragranular TG sustained TH release. Moreover, the effect of cross-linking ions on viscosity, rigidity, cross-link density and TH release behavior from hydrogel matrices was investigated. In-vivo pharmacokinetic performance of the optimized extragranular TG semi-IPN hydrogel matrix (F15) indicated sustained TH release in gastrointestinal milieu.
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Affiliation(s)
- Kaushik Mukherjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, West Bengal, India
| | - Sukanta Roy
- Bioequivalence Study Center, TAAB Biostudy Services, Ibrahimpore Road, Kolkata 700032, India
| | - Tapan Kumar Giri
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, West Bengal, India.
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Xiang S, Wang J, Wang X, Ma X, Peng H, Zhu X, Huang J, Ran M, Ma L, Sun X. A chitosan-coated lentinan-loaded calcium alginate hydrogel induces broad-spectrum resistance to plant viruses by activating Nicotiana benthamiana calmodulin-like (CML) protein 3. PLANT, CELL & ENVIRONMENT 2023; 46:3592-3610. [PMID: 37551976 DOI: 10.1111/pce.14681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/26/2023] [Accepted: 07/29/2023] [Indexed: 08/09/2023]
Abstract
Control of plant virus diseases largely depends on the induced plant defence achieved by the external application of synthetic chemical inducers with the ability to modify defence-signalling pathways. However, most of the molecular mechanisms underlying these chemical inducers remain unknown. Here, we developed a chitosan-coated lentinan-loaded hydrogel and discovered how it protects plants from different virus infections. The hydrogel was synthesized by coating chitosan on the surface of the calcium alginate-lentinan (LNT) hydrogel (SL-gel) to form a CSL-gel. CSL-gels exhibit the capacity to prolong the stable release of lentinan and promote Ca2+ release. Application of CSL-gels on the root of plants induces broad-spectrum resistance against plant viruses (TMV, TRV, PVX and TuMV). RNA-seq analysis identified that Nicotiana benthamiana calmodulin-like protein gene 3 (NbCML3) is upregulated by the sustained release of Ca2+ from the CSL-gel, and silencing and overexpression of NbCML alter the susceptibility and resistance of tobacco to TMV. Our findings provide evidence that this novel and synthetic CSL-gel strongly inhibits the infection of plant viruses by the sustainable release of LNT and Ca2+ . This study uncovers a novel mode of action by which CSL-gels trigger NbCML3 expression through the stable and sustained release of Ca2+ .
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Affiliation(s)
- Shunyu Xiang
- College of Plant Protection, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, China
| | - Jing Wang
- College of Plant Protection, Southwest University, Chongqing, China
| | - Xiaoyan Wang
- College of Plant Protection, Southwest University, Chongqing, China
| | - Xiaozhou Ma
- College of Plant Protection, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, China
| | - Haoran Peng
- College of Plant Protection, Southwest University, Chongqing, China
| | - Xin Zhu
- College of Plant Protection, Southwest University, Chongqing, China
| | - Jin Huang
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, China
| | - Mao Ran
- Chongqing Tobacco Science Research Institute, Chongqing, China
| | - Lisong Ma
- State Key Laboratory of North China Crop Improvement and Regulation, College of Horticulture, Hebei Agricultural University, Baoding, China
| | - Xianchao Sun
- College of Plant Protection, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing, China
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Patel M, Shelke S, Surti N, Panzade P, Al-Keridis LA, Upadhyay TK, Alshammari N, Saeed M. Design, preparation, and in vitro evaluation of gastroretentive floating matrix tablet of mitiglinide. Front Pharmacol 2023; 14:1140351. [PMID: 37006995 PMCID: PMC10050700 DOI: 10.3389/fphar.2023.1140351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 02/24/2023] [Indexed: 03/17/2023] Open
Abstract
The present research is focused on developing floating matrix tablets of mitiglinide to prolong its gastric residence time for better absorption. Gastroretentive tablets were prepared using a direct compression technique with hydroxypropyl methylcellulose K15M (HPMC K15M) and sodium alginate as matrix-forming polymers and sodium bicarbonate as the gas-forming agent. A 32 full factorial design was adopted to optimize the flotation and release profile of the drug. The concentration of HPMC K15M and sodium alginate were taken as the independent variables, and the floating lag time, time required for 50% drug release, and time required for 90% drug release were taken as dependent variables. The compatibility between drug and excipients was assessed by Fourier transform infrared (FTIR) spectroscopy. The prepared tablets were evaluated for different parameters such as hardness, friability, drug content, floating time, in vitro dissolution, and stability. Dissolution data were analyzed using various kinetic models to ascertain the mechanism of drug release. Finally, a radiographic study was conducted to estimate the retention time of the optimized floating matrix tablets of mitiglinide inside the body. The results revealed that all the physical properties of the developed formulations were within standard limits. The formulation M3, with the maximum amount of both independent variables, was considered to be the optimized formulation based on the desirability value. In addition, the optimized M3 formulation showed stability for over 6 months, as evidenced by insignificant changes in lag time, drug release pattern, and other physical properties. Furthermore, radiographic examination indicated that the tablets remained afloat in gastric fluid for up to 12 h in the rabbit’s stomach. In conclusion, the developed floating matrix tablet of mitiglinide could be regarded as a promising formulation that could release the drug in the stomach at a controlled rate and, hence, offer better management of type II diabetes.
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Affiliation(s)
- Meenakshi Patel
- Department of Pharmaceutics, School of Pharmacy, Faculty of Pharmacy, Parul University, Waghodia, India
- *Correspondence: Meenakshi Patel, ; Tarun Kumar Upadhyay, ; Mohd Saeed,
| | - Santosh Shelke
- Department of Pharmaceutics, Srinath College of Pharmacy, Aurangabad, India
| | - Naazneen Surti
- Babaria Institute of Pharmacy, Varnama, Gujarat Technological University, Vadodara, India
| | - Prabhakar Panzade
- Department of Pharmaceutics, Srinath College of Pharmacy, Aurangabad, India
| | - Lamya Ahmed Al-Keridis
- Biology Department, Faculty of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Tarun Kumar Upadhyay
- Department of Biotechnology, Parul Institute of Applied Sciences and Centre for Research for Development, Parul University, Vadodara, India
- *Correspondence: Meenakshi Patel, ; Tarun Kumar Upadhyay, ; Mohd Saeed,
| | - Nawaf Alshammari
- Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
| | - Mohd Saeed
- Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
- *Correspondence: Meenakshi Patel, ; Tarun Kumar Upadhyay, ; Mohd Saeed,
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Veronica N, Heng PWS, Liew CV. Alginate-based matrix tablets for drug delivery. Expert Opin Drug Deliv 2023; 20:115-130. [PMID: 36503355 DOI: 10.1080/17425247.2023.2158183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION As a nature-derived polymer with swelling and gelling properties, alginate has found wide biopharma-relevant applications. However, there is comparatively limited attention on alginate in tablet formulations. Therefore, this review aimed to provide an overview of the applications of alginate in solid dosage form formulations. AREAS COVERED This review outlines the role of alginate for oral sustained release formulations. For better insights into its application in drug delivery, the mechanisms of drug release from alginate matrices are discussed alongside the alginate inherent properties and drug properties. Specifically, the influence of alginate properties and formulation components on the resultant alginate gel and subsequent drug release is reviewed. Modifications of the alginate to improve its properties in modulating drug release are also discussed. EXPERT OPINION Alginate-based matrix tablets is useful for sustaining drug release. As a nature-derived polymer, batch consistency and stability raise some concerns about employing alginate in formulations. Furthermore, the alginate gel properties can be affected by formulation components, pH of the dissolution environment and the tablet matrix micro-environment pH. Conscientious efforts are pivotal to addressing these formulation challenges to increase the utilization of alginate in oral solid dosage forms.
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Affiliation(s)
- Natalia Veronica
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, 117543, Singapore, Singapore
| | - Paul Wan Sia Heng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, 117543, Singapore, Singapore
| | - Celine Valeria Liew
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500, Subang Jaya, Malaysia
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Xiong C, Cao X, Zhao X, Yang S, Huang J, Feng Y, Yu G, Li J. Stability and photo demulsification of oil-in-seawater Pickering emulsion based on Fe3+ induced amphiphilic alginate. Carbohydr Polym 2022; 289:119399. [DOI: 10.1016/j.carbpol.2022.119399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/18/2022] [Accepted: 03/19/2022] [Indexed: 11/02/2022]
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Abdallah MH, Abdelnabi DM, Elghamry HA. Response Surface Methodology for Optimization of Buspirone Hydrochloride-Loaded In Situ Gel for Pediatric Anxiety. Gels 2022; 8:gels8070395. [PMID: 35877480 PMCID: PMC9323393 DOI: 10.3390/gels8070395] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/15/2022] [Accepted: 06/19/2022] [Indexed: 02/05/2023] Open
Abstract
The purpose of the current investigation was to formulate, assess, and optimize oral in situ gels of buspirone hydrochloride (BH) with the specific end goal of expanding the time the medication spends in the stomach, thereby ensuring an extended medication discharge. This would allow the use of a once-a-day dose of liquid BH formulations, which is ideal for the treatment of pediatric anxiety. In situ gels loaded with BH were prepared using various concentrations of sodium alginate (Na alg.), calcium chloride (CaCl2), and hydroxypropyl methylcellulose (HPMC K15M). The in situ gels exhibited the desired consistency, drug distribution, pH, ability to form gel, and prolonged drug release in vitro. The (33) full factorial design was utilized for the revealing of the ideal figures for the selected independent variables, Na alg. (X1), HPMC (X2), and CaCl2 (X3) based on measurements of the viscosity (Y1) and percentage drug release after 6 h (Y2). A pharmacokinetic study of the optimum formulation on rabbits was also performed. The formulation containing 2% of Na alg., 0.9% of HPMC-K15M, and 0.1125% of CaCl2 was selected as the ideal formulation, which gave the theoretical values of 269.2 cP and 44.9% for viscosity and percentage of drug released after 6 h, respectively. The pharmacokinetic study showed that the selected oral Na alg. in situ gel formulation displayed a prolonged release effect compared to BH solution and the marketed tablet (Buspar®), which was confirmed by the low Cmax and high Tmax values. The optimum oral Na alg. in situ gel showed a 1.5-fold increment in bioavailability compared with the drug solution.
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Affiliation(s)
- Marwa H. Abdallah
- Department of Pharmaceutics, College of Pharmacy, University of Ha’il, Hail 81442, Saudi Arabia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (D.M.A.); (H.A.E.)
- Correspondence:
| | - Dina M. Abdelnabi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (D.M.A.); (H.A.E.)
| | - Hanaa A. Elghamry
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (D.M.A.); (H.A.E.)
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Nuisin R, Siripongpreda T, Watcharamul S, Siralertmukul K, Kiatkamjornwong S. Facile Syntheses of Physically Crosslinked Carboxymethyl Cellulose Hydrogels and Nanocomposite Hydrogels for Enhancing Water Absorbency and Adsorption of Sappan Wood Dye. ChemistrySelect 2022. [DOI: 10.1002/slct.202104598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Roongkan Nuisin
- Environmental Science Faculty of Science Chulalongkorn University Phyathai Road Bangkok 10330 Thailand
| | - Tatiya Siripongpreda
- Environmental Science Faculty of Science Chulalongkorn University Phyathai Road Bangkok 10330 Thailand
| | - Supawin Watcharamul
- Environmental Science Faculty of Science Chulalongkorn University Phyathai Road Bangkok 10330 Thailand
| | - Krisana Siralertmukul
- The Metallurgy and Materials Science Research Institute Chulalongkorn University Phyathai Road Bangkok 10330 Thailand
| | - Suda Kiatkamjornwong
- Office of the Research Affairs Chulalongkorn University Phyathai Road Bangkok 10330 Thailand
- Fellow the Academy of Science, The Royal Society of Bangkok 10300 Thailand
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Viscusi G, Lamberti E, Gorrasi G. Design of a hybrid bio-adsorbent based on Sodium Alginate/Halloysite/Hemp hurd for methylene blue dye removal: kinetic studies and mathematical modeling. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127925] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Rial R, Hassan N, Liu Z, Ruso JM. The design and green nanofabrication of noble hydrogel systems with encapsulation of doped bioactive hydroxyapatite toward sustained drug delivery. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Bunlung S, Nualnoi T, Issarachot O, Wiwattanapatapee R. Development of raft-forming liquid and chewable tablet formulations incorporating quercetin solid dispersions for treatment of gastric ulcers. Saudi Pharm J 2021; 29:1143-1154. [PMID: 34703368 PMCID: PMC8523354 DOI: 10.1016/j.jsps.2021.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 08/01/2021] [Indexed: 11/23/2022] Open
Abstract
Gastroretentive raft-forming formulations were developed in liquid and chewable tablet dosage forms to achieve prolonged delivery of quercetin in the stomach. The formulations contained a solid dispersion of quercetin and polyvinylpyrrolidone (PVP K 30) at a 1:10 w/w ratio to improve the solubility of the flavonoid. The formulations also contained sodium alginate as a gel forming agent, calcium carbonate as a calcium source and carbon dioxide producer and hydroxypropyl methylcellulose K100M as a drug release retarding polymer. The chewable tablets incorporated mannitol as a diluent. Both liquid and chewable tablet formulations exhibited rapid floating behaviour (lag time < 1 min) and long floating duration (>24 h) in 0.1 N HCl. The optimized liquid formulation showed superior characteristics based on high raft strength (10.4 g) and sustained release of quercetin (93 % over 8 h) whereas the optimized chewable tablet formulation exhibited lower raft strength (7.2 g) and lower drug release (79 % in 8 h). The optimized liquid and chewable tablet formulations were found to induce anti-inflammatory activity in cell culture using RAW 264.7 cells macrophages and enhance the migration of human gastric adenocarcinoma (AGS) epithelial cells in vitro, indicating wound healing potential for treatment of gastric ulcers.
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Affiliation(s)
- Suputra Bunlung
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla Univesity, Hat Yai, Songkhla, Thailand
| | - Teerapat Nualnoi
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Ousanee Issarachot
- Pharmacy Technician Department, Sirindhron College of Public Health of Suphanburi, Mueang, Suphanburi, Thailand
| | - Ruedeekorn Wiwattanapatapee
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences, Prince of Songkla Univesity, Hat Yai, Songkhla, Thailand
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Mafi M, Greiner A. Bioremediation of Copper-Ions by Polymer Encapsulated and Immobilized Micrococcus Luteus. Macromol Biosci 2021; 21:e2100086. [PMID: 34414670 DOI: 10.1002/mabi.202100086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/09/2021] [Indexed: 11/10/2022]
Abstract
Bioremediation of copper (Cu2+ ) with immobilized Micrococcus luteus in polymer matrices has been broadly studied for a wide range of applications including wastewater treatment. Herein, the bioremediation efficiency based on modified immobilization techniques and by the addition of Cu2+ is investigated. Porous composite nonwovens with living M. luteus (living polymer composites) are prepared by encapsulation of the bacterial cells in poly(vinyl alcohol) (PVA) microparticles (M. luteus/PVA microparticles) produced by spray drying method. The M. luteus/PVA microparticles are chemically cross-linked. The hydrogel microparticles with encapsulated M. luteus are embedded in a nonwoven of poly (lactic acid) (PLA) electrospun short fibers provided by wet-laid method. Two different models of composite nonwovens are reported, in which the place position of the hydrogel PVA microparticles with encapsulated M. luteus and PLA nonwoven can affect the bioremediation process.
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Affiliation(s)
- Mahsa Mafi
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, Bayreuth, 95440, Germany
| | - Andreas Greiner
- Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, Bayreuth, 95440, Germany
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Viscusi G, Gorrasi G. Facile preparation of layered double hydroxide (LDH)-alginate beads as sustainable system for the triggered release of diclofenac: Effect of pH and temperature on release rate. Int J Biol Macromol 2021; 184:271-281. [PMID: 34139243 DOI: 10.1016/j.ijbiomac.2021.05.217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/27/2021] [Accepted: 05/29/2021] [Indexed: 11/19/2022]
Abstract
This paper concerns the facile preparation of alginate beads encapsulating layered double hydroxide (LDH) intercalated with diclofenac sodium as drug delivery systems. To better evaluate the effect of LDH carrier, alginate beads loaded with free diclofenac were also prepared. Composites hydrogel beads were ionotropically crosslinked in CaCl2 solution at 4 °C. Thermal and barrier properties were evaluated and correlated with the presence of the inorganic phase. Swelling behavior was investigated over time. Release kinetics of diclofenac at different pH and temperatures were evaluated. The diclofenac release behavior appeared to be affected by the presence of LDH, the pH of release medium and the temperature allowing for fabricating a sustainable composite characterized by a triggered drug release rate. Finally, empirical relationships correlating the drug diffusion as a function of temperature and pH were extrapolated.
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Affiliation(s)
- Gianluca Viscusi
- Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
| | - Giuliana Gorrasi
- Department of Industrial Engineering, University of Salerno, via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy.
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Park RM, Nguyen NHT, Lee SM, Kim YH, Min J. Alginate oligosaccharides can maintain activities of lysosomes under low pH condition. Sci Rep 2021; 11:11504. [PMID: 34075195 PMCID: PMC8169924 DOI: 10.1038/s41598-021-91175-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 03/18/2021] [Indexed: 12/24/2022] Open
Abstract
The objective of this study was to report that lysosome extracted from egg white could be used as a drug through oral administration for treating diseases by using pH sensitive alginate oligosaccharides. Lysosome-alginate oligosaccharides composite were formulated for oral administration of lysosomes. The dissolution test confirmed the availability of the oral dosage form. When lysosome were used as an independent drug, the activity of protein was lost due to influence of low pH. Its antibacterial activity was also remarkably reduced. However, when lysosome-alginate oligosaccharides composite form was used, antimicrobial activity of lysozyme was maintained. At low pH, a gel-like matrix was formed by alginate oligosaccharides to protect the lysosome. When the pH was increased, alginate oligosaccharides were dissolved and the lysosome was released. SDS–polyacrylamide gel electrophoresis analysis of released lysosomes revealed that alginate oligosaccharide could effectively protect the lysosome from degradation or hydrolysis under acidic conditions for at least 2 h. The results of this study are important for application of lysosomes as therapeutic agents, and also it was confirmed that alginate oligosaccharides have potential as direct delivery system for the oral application of protein derived therapies.
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Affiliation(s)
- Ra-Mi Park
- Graduate School of Semiconductors and Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea
| | - Ngoc-Han Thi Nguyen
- Department of Bioprocess Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea
| | - Su-Min Lee
- Graduate School of Semiconductors and Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea
| | - Yang-Hoon Kim
- School of Biological Sciences, Chungbuk National University, Chungdae-Ro, Seowon-Gu, Cheongju, 28644, South Korea.
| | - Jiho Min
- Graduate School of Semiconductors and Chemical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea. .,Department of Bioprocess Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea.
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Physicochemical characteristics of thermo-responsive gelatin membranes containing carboxymethyl chitosan and poly(N-isopropylacrylamide-co-acrylic acid). JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02534-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Vakili N, Asefnejad A. Titanium coating: introducing an antibacterial and bioactive chitosan-alginate film on titanium by spin coating. ACTA ACUST UNITED AC 2020; 65:621-630. [PMID: 32333647 DOI: 10.1515/bmt-2018-0108] [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: 06/13/2018] [Accepted: 11/06/2018] [Indexed: 01/13/2023]
Abstract
Coating of titanium (Ti) implants with biocompatible polymers were performed to improve bone healing. In this study, pure Ti implants were coated via chitosan and alginate by spin coating method at 1000, 4000, and 8000 rpm. The coating layer was cross-linked by calcium chloride. Their chemical structures were analyzed by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) evaluations. The morphology of the created coating was observed by scanning electron microscopy (SEM), and the best uniformity was observed in the prepared coating at 8000 rpm (6093× g) spinal speed. The adhesion strength of the coating layer on the substrate was evaluated by the adhesion pull-off test. Also, the best adhesion strength was achieved at an 8000 rpm (6093× g) coating rate. Bioactivity of the chitosan-alginate coating on Ti sheets was evaluated by soaking the samples in a simulated body fluid (SBF) solution. The apatite formation on prepared Ti sheets was investigated by SEM, XRD, and energy dispersive X-ray spectroscopy (EDS). A higher mineralization appeared on coated samples compared with pure Ti. The antibacterial behavior of the implants was analyzed by bacterial counting against Escherichia coli. The presence of chitosan and alginate on the Ti sheets resulted in a better antibacterial effect. In-vitro experiments, with L929 fibroblast cells, confirmed the biocompatibility of the implants. Coating the Ti implants with chitosan and alginate improved biomineralization and biological behavior of the implant especially at the spinal speed of 8000 rpm (6093× g). These implants can support osteoblast cell adhesion and facilitate bone regeneration.
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Affiliation(s)
- Nasim Vakili
- Department of Biomedical Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran 4515-775, Iran
| | - Azadeh Asefnejad
- Department of Biomedical Engineering, Tehran Science and Research Branch, Islamic Azad University, Tehran 4515-775, Iran
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18
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Upadhyay M, Vardhan H, Mishra B. Natural polymers composed mucoadhesive interpenetrating buoyant hydrogel beads of capecitabine: Development, characterization and in vivo scintigraphy. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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19
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In-situ fast gelling formulation for oral sustained drug delivery of paracetamol to dysphagic patients. Int J Biol Macromol 2019; 134:864-868. [DOI: 10.1016/j.ijbiomac.2019.05.092] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/12/2019] [Accepted: 05/15/2019] [Indexed: 11/24/2022]
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20
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Bi YG, Lin ZT, Deng ST. Fabrication and characterization of hydroxyapatite/sodium alginate/chitosan composite microspheres for drug delivery and bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:576-583. [DOI: 10.1016/j.msec.2019.03.040] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 02/22/2019] [Accepted: 03/10/2019] [Indexed: 12/19/2022]
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21
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Preparation and regeneration of a thermo-sensitive adsorbent material: methyl cellulose/calcium alginate beads (MC/CABs). Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02808-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Bahrami Z, Akbari A, Eftekhari-Sis B. Double network hydrogel of sodium alginate/polyacrylamide cross-linked with POSS: Swelling, dye removal and mechanical properties. Int J Biol Macromol 2019; 129:187-197. [DOI: 10.1016/j.ijbiomac.2019.02.046] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 02/01/2019] [Accepted: 02/07/2019] [Indexed: 12/15/2022]
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23
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Samaddar P, Kumar S, Kim KH. Polymer Hydrogels and Their Applications Toward Sorptive Removal of Potential Aqueous Pollutants. POLYM REV 2019. [DOI: 10.1080/15583724.2018.1548477] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pallabi Samaddar
- Department of Civil & Environmental Engineering, Hanyang University, Seoul, Republic of Korea
| | - Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, India
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, Seoul, Republic of Korea
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Maher S, Kumeria T, Aw MS, Losic D. Diatom Silica for Biomedical Applications: Recent Progress and Advances. Adv Healthc Mater 2018; 7:e1800552. [PMID: 30118185 DOI: 10.1002/adhm.201800552] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 07/12/2018] [Indexed: 12/30/2022]
Abstract
Diatoms are unicellular photosynthetic algae enclosed in porous 3D nanopatterned silica enclosures called "frustules." The diatom frustules are made from biosilica self-assembled into intricate porous shells that feature unique properties including high specific surface area, biocompatibility, tailorable surface chemistry, thermal stability, and high mechanical and chemical resistance. The ability to cultivate diatoms in artificial environments and their abundant availability of diatom frustules as mineable fossilized mineral deposits (diatomite or diatomaceous earth; DE) make diatom silica a promising natural alternative to synthetic porous silica for a broad range of biomedical, environmental, agricultural, and energy applications. This review article provides a comprehensive and current account of the use of natural DE silica materials in biomedical applications focused mainly on drug delivery with some highlights on biosensing, tissue engineering, and clotting agents. The article also covers some basic physical and chemical aspects of DE material such as purification, surface chemical functionalization, biocompatibility, and cellular uptake that are critical for the development of an efficient drug carrier.
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Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering The University of Adelaide Engineering North Building 5005 Adelaide Australia
| | - Tushar Kumeria
- School of Pharmacy The University of Queensland Pharmacy Australia Center of Excellence Building Woolloongabba Queensland 4102 Australia
| | - Moom Sin Aw
- School of Chemical Engineering The University of Adelaide Engineering North Building 5005 Adelaide Australia
| | - Dusan Losic
- School of Chemical Engineering The University of Adelaide Engineering North Building 5005 Adelaide Australia
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25
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Development of biopolymers based interpenetrating polymeric network of capecitabine: A drug delivery vehicle to extend the release of the model drug. Int J Biol Macromol 2018; 115:907-919. [DOI: 10.1016/j.ijbiomac.2018.04.123] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/16/2018] [Accepted: 04/23/2018] [Indexed: 12/17/2022]
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26
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Peña B, Laughter M, Jett S, Rowland TJ, Taylor MRG, Mestroni L, Park D. Injectable Hydrogels for Cardiac Tissue Engineering. Macromol Biosci 2018; 18:e1800079. [PMID: 29733514 PMCID: PMC6166441 DOI: 10.1002/mabi.201800079] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/27/2018] [Indexed: 12/21/2022]
Abstract
In light of the limited efficacy of current treatments for cardiac regeneration, tissue engineering approaches have been explored for their potential to provide mechanical support to injured cardiac tissues, deliver cardio-protective molecules, and improve cell-based therapeutic techniques. Injectable hydrogels are a particularly appealing system as they hold promise as a minimally invasive therapeutic approach. Moreover, injectable acellular alginate-based hydrogels have been tested clinically in patients with myocardial infarction (MI) and show preservation of the left ventricular (LV) indices and left ventricular ejection fraction (LVEF). This review provides an overview of recent developments that have occurred in the design and engineering of various injectable hydrogel systems for cardiac tissue engineering efforts, including a comparison of natural versus synthetic systems with emphasis on the ideal characteristics for biomimetic cardiac materials.
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Affiliation(s)
- Brisa Peña
- Cardiovascular Institute, School of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, 12700 E.19th Avenue, Bldg. P15, Aurora, CO, 80045, USA
| | - Melissa Laughter
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, CO, 80045, USA
| | - Susan Jett
- Cardiovascular Institute, School of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, 12700 E.19th Avenue, Bldg. P15, Aurora, CO, 80045, USA
| | - Teisha J Rowland
- Cardiovascular Institute, School of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, 12700 E.19th Avenue, Bldg. P15, Aurora, CO, 80045, USA
| | - Matthew R G Taylor
- Cardiovascular Institute, School of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, 12700 E.19th Avenue, Bldg. P15, Aurora, CO, 80045, USA
| | - Luisa Mestroni
- Cardiovascular Institute, School of Medicine, Division of Cardiology, University of Colorado Denver Anschutz Medical Campus, 12700 E.19th Avenue, Bldg. P15, Aurora, CO, 80045, USA
| | - Daewon Park
- Bioengineering Department, University of Colorado Denver Anschutz Medical Campus, Bioscience 2 1270 E. Montview Avenue, Suite 100, Aurora, CO, 80045, USA
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27
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Khoshzaban A, Keyhanvar P, Delrish E, Najafi F, Heidari Keshel S, Watanabe I, Valanezhad A, Jafarzadeh Kashi T. Alginate Microcapsules as Nutrient Suppliers: An In Vitro Study. CELL JOURNAL 2018; 20:25-30. [PMID: 29308615 PMCID: PMC5759677 DOI: 10.22074/cellj.2018.4508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/20/2017] [Indexed: 11/24/2022]
Abstract
Objective Alginate, known as a group of anionic polysaccharides extracted from seaweeds, has attracted the attention
of researchers because of its biocompatibility and degradability properties. Alginate has shown beneficial effects on
wound healing as it has similar function as extracellular matrix. Alginate microcapsules (AM) that are used in tissue
engineering as well as Dulbecco’s modified Eagle’s medium (DMEM) contain nutrients required for cell viability. The
purpose of this research was introducing AM in medium and nutrient reagent cells and making a comparison with
control group cells that have been normally cultured in long term.
Materials and Methods In this experimental study, AM were shaped in distilled water, it was dropped at 5 mL/hours
through a flat 25G5/8 sterile needle into a crosslinking bath containing 0.1 M calcium chloride to produce calcium
alginate microspheres. Then, the size of microcapsules (300-350 µm) were confirmed by Scanning Electron Microscopy
(SEM) images after the filtration for selection of the best size. Next, DMEM was injected into AM. Afterward, adipose-
derived mesenchymal stem cells (ADSCs) and Ringer’s serum were added. Then, MTT and DAPI assays were used
for cell viability and nucleus staining, respectively. Also, morphology of microcapsules was determined under invert
microscopy.
Results Evaluation of the cells performed for spatial media/microcapsules at the volume of 40 µl, showed ADSCs
after 1-day cell culture. Also, MTT assay results showed a significant difference in the viability of sustained-release
media injected to microcapsules (P<0.05). DAPI staining revealed living cells on the microcapsules after 1 to 7-day cell
culture.
Conclusion According to the results, AM had a positive effect on cell viability in scaffolds and tissue engineering and
provide nutrients needed in cell therapy.
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Affiliation(s)
- Ahad Khoshzaban
- Iranian Tissue Bank and Research Center, Imam Khomeini Medical Complex Hospital, Tehran University of Medical Sciences, Tehran, Iran.,Stem Cell Preparation Unit, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.,Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Peyman Keyhanvar
- Stem Cell Preparation Unit, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Delrish
- Stem Cell Preparation Unit, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Farhood Najafi
- Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran
| | - Saeed Heidari Keshel
- Stem Cell Preparation Unit, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ikuya Watanabe
- Department of Bio-Engineering, Nagasaki University, Nagasaki, Japan
| | | | - Tahereh Jafarzadeh Kashi
- Iranian Tissue Bank and Research Center, Imam Khomeini Medical Complex Hospital, Tehran University of Medical Sciences, Tehran, Iran.,Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.Electronic Address:
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28
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Chen Y, Chen F, Zhang S, Cai Y, Cao S, Li S, Zhao W, Yuan S, Feng X, Cao A, Ma X, Wang B. Facile Fabrication of Multifunctional Metal–Organic Framework Hollow Tubes To Trap Pollutants. J Am Chem Soc 2017; 139:16482-16485. [DOI: 10.1021/jacs.7b10265] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yifa Chen
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Fan Chen
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Shenghan Zhang
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Ya Cai
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Sijia Cao
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Siqing Li
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Wenqi Zhao
- Department
of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Shuai Yuan
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Xiao Feng
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Anyuan Cao
- Department
of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Xiaojie Ma
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
| | - Bo Wang
- Key
Laboratory of Cluster Science, Ministry of Education of China, School
of Chemistry, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, People’s Republic of China
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Bhandari PN, Cui Y, Elzey BD, Goergen CJ, Long CM, Irudayaraj J. Oxygen nanobubbles revert hypoxia by methylation programming. Sci Rep 2017; 7:9268. [PMID: 28839175 PMCID: PMC5570893 DOI: 10.1038/s41598-017-08988-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 07/14/2017] [Indexed: 01/12/2023] Open
Abstract
Targeting the hypoxic tumor microenvironment has a broad impact in cancer epigenetics and therapeutics. Oxygen encapsulated nanosize carboxymethyl cellulosic nanobubbles were developed for mitigating the hypoxic regions of tumors to weaken the hypoxia-driven pathways and inhibit tumor growth. We show that 5-methylcytosine (5mC) hypomethylation in hypoxic regions of a tumor can be reverted to enhance cancer treatment by epigenetic regulation, using oxygen nanobubbles in the sub-100 nm size range, both, in vitro and in vivo. Oxygen nanobubbles were effective in significantly delaying tumor progression and improving survival rates in mice models. Further, significant hypermethylation was observed in promoter DNA region of BRCA1 due to oxygen nanobubble (ONB) treatment. The nanobubbles can also reprogram several hypoxia associated and tumor suppressor genes such as MAT2A and PDK-1, in addition to serving as an ultrasound contrast agent. Our approach to develop nanosized oxygen encapsulated bubbles as an ultrasound contrast agent for methylation reversal is expected to have a significant impact in epigenetic programming and to serve as an adjuvant to cancer treatment.
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Affiliation(s)
- Pushpak N Bhandari
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, 225 South University Street, West Lafayette, Indiana, 47907, USA
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, USA
| | - Yi Cui
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, 225 South University Street, West Lafayette, Indiana, 47907, USA
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, USA
| | - Bennett D Elzey
- Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Craig J Goergen
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Christopher M Long
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, 225 South University Street, West Lafayette, Indiana, 47907, USA
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, USA
| | - Joseph Irudayaraj
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University, 225 South University Street, West Lafayette, Indiana, 47907, USA.
- Purdue University Center for Cancer Research, West Lafayette, Indiana, 47907, USA.
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Xing P, Shi Y, Dong C, Liu H, Cheng Y, Sun J, Li D, Li M, Sun K, Feng D. Colon-Targeted Delivery of IgY Against Clostridium difficile Toxin A and B by Encapsulation in Chitosan-Ca Pectinate Microbeads. AAPS PharmSciTech 2017; 18:1095-1103. [PMID: 27826799 DOI: 10.1208/s12249-016-0656-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 10/26/2016] [Indexed: 12/18/2022] Open
Abstract
This study investigated the use of a newly developed chitosan-Ca pectinate microbead formulation for the colon-targeted delivery of anti-A/B toxin immunoglobulin of egg yolk (IgY) to inhibit toxin binding to colon mucosa cells. The effect of the three components (pectinate, calcium chloride, and chitosan) used for the microbead production was examined with the aim of identifying the optimal levels to improve drug encapsulation efficiency, swelling ratio, and cumulative IgY release rate. The optimized IgY-loaded bead component was pectin 5% (w/v), CaCl2 3% (w/v), and chitosan 0.5% (w/v). Formulated beads were spherical with 1.2-mm diameter, and the drug loading was 45%. An in vitro release study revealed that chitosan-Ca pectinate microbeads inhibited IgY release in the upper gastrointestinal tract and significantly improved the site-specific release of IgY in the colon. An in vivo rat study demonstrated that 72.6% of biologically active IgY was released specifically in the colon. These results demonstrated that anti-A/B toxin IgY-loaded chitosan-Ca pectinate oral microbeads improved IgY release behavior in vivo, which could be used as an effective oral delivery platform for the biological treatment of Clostridium difficile infection (CDI).
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31
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Bhandari P, Wang X, Irudayaraj J. Oxygen Nanobubble Tracking by Light Scattering in Single Cells and Tissues. ACS NANO 2017; 11:2682-2688. [PMID: 28267921 DOI: 10.1021/acsnano.6b07478] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Oxygen nanobubbles (ONBs) have significant potential in targeted imaging and treatment in cancer diagnosis and therapy. Precise localization and tracking of single ONBs is demonstrated based on hyperspectral dark-field microscope (HSDFM) to image and track single oxygen nanobubbles in single cells. ONBs were proposed as promising contrast-generating imaging agents due to their strong light scattering generated from nonuniformity of refractive index at the interface. With this powerful platform, we have revealed the trajectories and quantities of ONBs in cells, and demonstrated the relation between the size and diffusion coefficient. We have also evaluated the presence of ONBs in the nucleus with respect to an increase in incubation time and have quantified the uptake in single cells in ex vivo tumor tissues. Our results demonstrate that HSDFM can be a versatile platform to detect and measure cellulosic nanoparticles at the single-cell level and to assess the dynamics and trajectories of this delivery system.
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Affiliation(s)
- Pushpak Bhandari
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University , West Lafayette, Indiana 47907, United States
| | - Xiaolei Wang
- University of Chicago, James Franck Institute , 929 E 57th Street, Chicago, Illinois 60637, United States
| | - Joseph Irudayaraj
- Department of Agricultural and Biological Engineering, Bindley Bioscience Center, Purdue Center for Cancer Research, Purdue University , West Lafayette, Indiana 47907, United States
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32
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Boni FI, Prezotti FG, Cury BSF. Gellan gum microspheres crosslinked with trivalent ion: effect of polymer and crosslinker concentrations on drug release and mucoadhesive properties. Drug Dev Ind Pharm 2016; 42:1283-90. [DOI: 10.3109/03639045.2015.1125915] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Fernanda Isadora Boni
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Fabíola Garavello Prezotti
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Beatriz Stringhetti Ferreira Cury
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
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Pandey N, Bhatt R. Exiguobacterium mediated arsenic removal and its protective effect against arsenic induced toxicity and oxidative damage in freshwater fish, Channa striata. Toxicol Rep 2015; 2:1367-1375. [PMID: 28962479 PMCID: PMC5598528 DOI: 10.1016/j.toxrep.2015.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/23/2015] [Accepted: 10/06/2015] [Indexed: 12/20/2022] Open
Abstract
Arsenic is a toxic metalloid existing widely in the environment, and its removal from contaminated water has become a global challenge. The use of bacteria in this regard finds a promising solution. In the present study, Exiguobacterium sp. As-9, which is an arsenic resistant bacterium, was selected with respect to its arsenic removal efficiency. Quantification of arsenic in the water treated with bacterium showed that Exiguobacterium efficiently removed up to 99% of arsenic in less than 20 h. In order to reveal the possible effect of this bacterium in removal of arsenic from water and protecting fishes from the detrimental effects of arsenic, we initiated a range of studies on fresh water fish, Channa striata. It was observed that the fishes introduced into bacteria treated water displayed no symptoms of arsenic toxicity which was marked by a decreased oxidative damage, whereas the fishes exposed to arsenic revealed a significant (p < 0.05) increase in the oxidative stress together with the elevated levels of malondialdehyde. Determination of the bioaccumulation of arsenic in the liver tissues of C. striata using hydride generation atomic absorption spectrophotometry (HG-AAS) revealed an increased As(III) accumulation in the fishes exposed to arsenic whereas the arsenic level in the control and bacteria treated fishes were found below the detectable limit. In conclusion, this study presents the strategies of bacterial arsenic removal with possible directions for future research.
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Key Words
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- Antioxidative enzymes
- Arsenic
- Arsenic removal
- BSM, basal salt medium
- CAT, catalase
- EDX, energy dispersive X-ray spectroscopy
- Exiguobacterium
- FTIR, Fourier transform infrared spectrophotometer
- GOT, glutamic oxaloacetic transaminase
- GPT, glutamic pyruvic transaminase
- GPx, glutathione peroxidase
- HG-AAS, hydride generation atomic absorption spectrophotometer
- MDA, malondialdehyde
- Oxidative damage
- SEM, scanning electron microscopy
- SOD, superoxide dismutase
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Affiliation(s)
- Neha Pandey
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh 495009, India
| | - Renu Bhatt
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh 495009, India
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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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Jelvehgari M, Mobaraki V, Montazam SH. Preparation and Evaluation of Mucoadhesive Beads/Discs of Alginate and Algino-Pectinate of Piroxicam for Colon-Specific Drug Delivery Via Oral Route. Jundishapur J Nat Pharm Prod 2014; 9:e16576. [PMID: 25625047 PMCID: PMC4302400 DOI: 10.17795/jjnpp-16576] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 05/23/2014] [Accepted: 05/26/2014] [Indexed: 11/25/2022] Open
Abstract
Background: Objective: Materials and Methods: Results: Conclusions:
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El-Zahaby SA, Kassem AA, El-Kamel AH. Formulation and in vitro evaluation of size expanding gastro-retentive systems of levofloxacin hemihydrate. Int J Pharm 2014; 464:10-8. [PMID: 24472642 DOI: 10.1016/j.ijpharm.2014.01.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/13/2014] [Accepted: 01/18/2014] [Indexed: 02/07/2023]
Abstract
Size increasing (plug-type) levofloxacin hemihydrate (LVF) tablets for eradication of Helicobacter pylori (H. pylori) were prepared using in situ gel forming polymers including: gellan gum, sodium alginate, pectin and xanthan gum. Effect of cross-linkers: calcium and aluminum chloride, on the drug release was also studied. The prepared tablets were evaluated for their physicochemical parameters: weight variation, thickness, friability, hardness, drug content, water uptake and in vitro drug release. The optimized formula was subjected to further studies such as radial swelling test, FT-IR and DSC. Results revealed that LVF release depends not only on the nature of the matrix but also on the type of cross linker used to form this polymeric matrix. The addition of either calcium chloride or aluminum chloride, as cross-linkers, to gellan gum formulations significantly decreased drug release. Other polymers' formulations resulted in increased drug release upon addition of the same cross-linkers. The formula containing xanthan gum without any cross linker showed the most sustained LVF release with an increase in diameter with time, thus acting as a plug-type dosage form. IR spectra and DSC thermograms of LVF, xanthan gum, and a physical mixture of both, indicated that there was no interaction between the drug and the polymer and confirmed the drug stability.
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Affiliation(s)
- Sally A El-Zahaby
- Department of Pharmaceutics, Faculty of Pharmacy and Drug manufacturing, Pharos University in Alexandria, Alexandria, Egypt.
| | - Abeer A Kassem
- Department of Pharmaceutics, Faculty of Pharmacy and Drug manufacturing, Pharos University in Alexandria, Alexandria, Egypt
| | - Amal H El-Kamel
- Department of Pharmaceutics, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt
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El-Zahaby SA, Kassem AA, El-Kamel AH. Formulation and in vitro evaluation of size expanding gastro-retentive systems of levofloxacin hemihydrate. Int J Pharm 2014. [DOI: https://doi.org/10.1016/j.ijpharm.2014.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Pandey SL, Hingawe NT, Das U, Patil AT. Mucoadhesive buccal tablets of domperidone: formulation evaluation and effects of process variables. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2014. [DOI: 10.1007/s40005-013-0103-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jelvehgari M, Barghi L, Barghi F. Preparation of Chlorpheniramine Maleate-loaded Alginate/Chitosan Particulate Systems by the Ionic Gelation Method for Taste Masking. Jundishapur J Nat Pharm Prod 2014; 9:39-48. [PMID: 24644438 PMCID: PMC3957142 DOI: 10.17795/jjnpp-12530] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 10/06/2013] [Accepted: 10/22/2013] [Indexed: 11/25/2022] Open
Abstract
Background: Chlorpheniramine maleate (CM) is widely used as an antihistaminic drug but it is very bitter and as yet no mouth dissolving/disintegrating taste-masked preparation that might be useful for pediatric and geriatric patients is available in the market. Objectives: The purpose of this research was to mask the bitter taste of CM by formulating microspheres of the taste-masked drug. Materials and Methods: This work was done to develop alginate/chitosan particles prepared by ionic gelation (Ca2+ and Al3+) for the CM release. The effect of different chitosan and Ca2+ concentrations on taste masking and the characteristics of the microspheres were investigated. Ca2+ and Al3+ alginates microspheres of CM were prepared using cross-linked insoluble complexes that precipitate, incorporating the drug. Formulations were characterized for particle size and shape, entrapment efficiency, fourier transform spectroscopy (FTIR), x-ray diffraction (XRD), and differential scanning calorimetry (DSC), bitter taste threshold and in vitro drug release in simulated gastrointestinal fluids. Results: FTIR, XRD and DSC demonstrated unstable characters of CM in the drug-loaded microspheres and revealed an amorphous form. Also, the peak of alginate microparticles (Ca2+ and Al3+ ions) in all formulations remained the same, with low intensity of spectrum. The results of DSC, X-ray diffraction and FTIR showed the presence of several CM chemical interactions with alginate and ions (Ca2+ and Al3+). The microsphere formulations showed desirable drug entrapment efficiencies (62.2-94.2%). Calcium/aluminum alginate retarded the release of CM at low pH = 1.2 and released the drug from microspheres slowly at pH = 6.8, simulating intestine pH. The drug release duration and the release kinetics were dependent on the nature of the polymers, the cation concentrations, and valences (Ca2+ and Al3+). The drug release rate was decreased by an increase in chitosan and cation concentrations. Conclusions: The results of the present study indicated that oral preparation of CM with an acceptable taste is feasible.
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Affiliation(s)
- Mitra Jelvehgari
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran ; Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, IR Iran
| | - Leila Barghi
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, IR Iran
| | - Farhad Barghi
- Student Research committee, Tabriz University of Medical Sciences, Tabriz, IR Iran
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Machida-Sano I, Hirakawa M, Matsumoto H, Kamada M, Ogawa S, Satoh N, Namiki H. Surface characteristics determining the cell compatibility of ionically cross-linked alginate gels. Biomed Mater 2014; 9:025007. [PMID: 24496019 DOI: 10.1088/1748-6041/9/2/025007] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this study we investigated differences in the characteristics determining the suitability of five types of ion (Fe(3+), Al(3+), Ca(2+), Ba(2+) and Sr(2+))-cross-linked alginate films as culture substrates for cells. Human dermal fibroblasts were cultured on each alginate film to examine the cell affinity of the alginates. Since cell behavior on the surface of a material is dependent on the proteins adsorbed to it, we investigated the protein adsorption ability and surface features (wettability, morphology and charge) related to the protein adsorption abilities of alginate films. We observed that ferric, aluminum and barium ion-cross-linked alginate films supported better cell growth and adsorbed higher amounts of serum proteins than other types. Surface wettability analysis demonstrated that ferric and aluminum ion-cross-linked alginates had moderate hydrophilic surfaces, while other types showed highly hydrophilic surfaces. The roughness was exhibited only on barium ion-cross-linked alginate surface. Surface charge measurements revealed that alginate films had negatively charged surfaces, and showed little difference among the five types of gel. These results indicate that the critical factors of ionically cross-linked alginate films determining the protein adsorption ability required for their cell compatibility may be surface wettability and morphology.
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Affiliation(s)
- Ikuko Machida-Sano
- Department of Biology, School of Education, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan
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Şanlı O, Olukman M. Preparation of ferric ion crosslinked acrylamide grafted poly (vinyl alcohol)/sodium alginate microspheres and application in controlled release of anticancer drug 5-fluorouracil. Drug Deliv 2013; 21:213-20. [PMID: 24134656 DOI: 10.3109/10717544.2013.844743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Ionically crosslinked microspheres of acrylamide (AAm) grafted poly (vinyl alcohol) (PVA)/sodium alginate (NaAlg) were prepared by crosslinking with FeCl3 and 5-fluorouracil (5-FU), which is an anticancer drug and was successfully encapsulated into the microspheres. The graft copolymer (PVA-g-PAAm) was characterized by using Fourier transform infrared spectroscopy (FTIR) and elemental analysis. The prepared microspheres were characterized by FTIR and scanning electron microscopy (SEM). Microspheres were also characterized by particle diameter, equilibrium swelling values and release profiles. The release studies were carried out at three pH values 1.2, 6.8 and 7.4, respectively, each for 2 h. The effects of preparation conditions as PVA-g-PAAm/NaAlg ratio, drug/polymer ratio, crosslinker concentration and exposure time to FeCl3 on the release of 5-FU were investigated for 6 h at 37 °C. The highest 5-FU release was found to be as 99.57% (w/w) at the end of 6 h for PVA-g-PAAm/NaAlg ratio of 1:4 (w/w), drug/polymer ratio of 1:8 (w/w), crosslinker concentration of 0.05 M and exposure time of 10 min. The release results were also supported by the swelling measurements of the microspheres. Release kinetics was described by Fickian and non-Fickian approaches.
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Affiliation(s)
- Oya Şanlı
- Department of Chemistry, Faculty of Science, Gazi University , Teknikokullar, Ankara , Turkey
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Raut NS, Deshmukh PR, Umekar MJ, Kotagale NR. Zinc cross-linked hydroxamated alginates for pulsed drug release. Int J Pharm Investig 2013; 3:194-202. [PMID: 24350039 PMCID: PMC3853759 DOI: 10.4103/2230-973x.121292] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Alginates can be tailored chemically to improve solubility, physicochemical, and biological properties and its complexation with metal ion is useful for controlling the drug release. MATERIALS AND METHODS Synthesized N,O-dimethyl, N-methyl, or N-Benzyl hydroxylamine derivatives of sodium alginate were subsequently complexed with zinc to form beads. Hydroxamation of sodium alginate was confirmed by Fourier transform infra-red spectroscopy (FTIR) and differential scanning calorimetry (DSC). RESULTS The synthesized polymeric material exhibited reduced aqueous, HCl and NaOH solubility. The hydroxamated derivatives demonstrated pulsed release where change in pH of the dissolution medium stimulated the atenolol release. CONCLUSION Atenolol loaded Zn cross-linked polymeric beads demonstrated the sustained the plasma drug levels with increased half-life. Although the synthesized derivatives greatly altered the aqueous solubility of sodium alginate, no significant differences in in vitro and in vivo atenolol release behavior amongst the N,O-dimethyl, N-methyl, or N-Benzyl hydroxylamine derivatives of sodium alginate were observed.
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Affiliation(s)
- Neha S Raut
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| | - Prasad R Deshmukh
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| | - Milind J Umekar
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
| | - Nandkishor R Kotagale
- Department of Pharmaceutics, Smt. Kishoritai Bhoyar College of Pharmacy, New Kamptee, Nagpur, Maharashtra, India
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Abulateefeh SR, Khanfar MA, Al Bakain RZ, Taha MO. Synthesis and characterization of new derivatives of alginic acid and evaluation of their iron(III)-crosslinked beads as potential controlled release matrices. Pharm Dev Technol 2013; 19:856-67. [PMID: 24032476 DOI: 10.3109/10837450.2013.836222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kaygusuz H, Erim FB, Pekcan O, Akın Evingür G. Cation effect on slow release from alginate beads: a fluorescence study. J Fluoresc 2013. [PMID: 23900849 DOI: 10.1007/s10895–013-1282-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, spherical alginate beads containing pyranine (P y ) as a fluorescence probe were prepared by ionotropic gelation of a sodium alginate solution. The steady state fluorescence technique was used to study pyranine release from the alginate beads crosslinked with calcium, barium and aluminum ions, respectively. The slow release of P y was observed with the time drive mode of the spectrophotometer at 512 nm. Fluorescence emission intensity (I p ) from P y was monitored during the release process, and the encapsulation efficiency (EE) of pyranine from the alginate beads was calculated. The Fickian Diffusion model was used to measure the release coefficients, D sl . It was seen that the slow release coefficients of pyranine from the alginate beads crosslinked with Ca(2+), Ba(2+), and Al(3+) ions increased in the following order: D sl (Al(3+))> D sl (Ca(2+))> D sl (Ba(2+)). In contrast, the initial amount of pyranine and EE into the beads showed the reverse behavior.
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Affiliation(s)
- Hakan Kaygusuz
- Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
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Kaygusuz H, Erim FB, Pekcan O, Akın Evingür G. Cation effect on slow release from alginate beads: a fluorescence study. J Fluoresc 2013; 24:161-7. [PMID: 23900849 DOI: 10.1007/s10895-013-1282-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 07/18/2013] [Indexed: 11/29/2022]
Abstract
In this study, spherical alginate beads containing pyranine (P y ) as a fluorescence probe were prepared by ionotropic gelation of a sodium alginate solution. The steady state fluorescence technique was used to study pyranine release from the alginate beads crosslinked with calcium, barium and aluminum ions, respectively. The slow release of P y was observed with the time drive mode of the spectrophotometer at 512 nm. Fluorescence emission intensity (I p ) from P y was monitored during the release process, and the encapsulation efficiency (EE) of pyranine from the alginate beads was calculated. The Fickian Diffusion model was used to measure the release coefficients, D sl . It was seen that the slow release coefficients of pyranine from the alginate beads crosslinked with Ca(2+), Ba(2+), and Al(3+) ions increased in the following order: D sl (Al(3+))> D sl (Ca(2+))> D sl (Ba(2+)). In contrast, the initial amount of pyranine and EE into the beads showed the reverse behavior.
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Affiliation(s)
- Hakan Kaygusuz
- Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
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Nokhodchi A, Raja S, Patel P, Asare-Addo K. The role of oral controlled release matrix tablets in drug delivery systems. BIOIMPACTS : BI 2012; 2:175-87. [PMID: 23678458 PMCID: PMC3648939 DOI: 10.5681/bi.2012.027] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 10/07/2012] [Accepted: 10/09/2012] [Indexed: 11/17/2022]
Abstract
Formulations that are able to control the release of drug have become an integral part of the pharmaceutical industry. In particular oral drug delivery has been the focus of pharmaceutical research for many years. This type of drug delivery has been at the centre of research due to its many benefits over conventional dosage. The focus of this review is on matrix tablets due to their widely use and simplicity of the formulation. This includes the discussion of various types of matrix tablets and factors affecting the drug release from these formulations. The mechanism of drug release from HPMC matrices is also discussed.
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Affiliation(s)
- Ali Nokhodchi
- Medway School of Pharmacy, University of Kent, Chatham, ME4 4TB, Kent, UK
| | - Shaista Raja
- Medway School of Pharmacy, University of Kent, Chatham, ME4 4TB, Kent, UK
| | - Pryia Patel
- Medway School of Pharmacy, University of Kent, Chatham, ME4 4TB, Kent, UK
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Ajazuddin, Alexander A, Khan J, Giri TK, Tripathi DK, Saraf S, Saraf S. Advancement in stimuli triggered in situ gelling delivery for local and systemic route. Expert Opin Drug Deliv 2012; 9:1573-92. [PMID: 23075325 DOI: 10.1517/17425247.2013.734806] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Current research efforts focused on the design and evaluation of drug delivery systems that are easy to administer require decreased administration frequency, and provide sustained drug release in order to increase clinical efficacy and compliance of the patients. The gel forming smart polymeric formulations offer numerous applications resemble sustained and prolonged action in contrast to conventional drug delivery systems. AREAS COVERED Article summarizes type of bioactive, sol-gel triggering factors, dose, rationales, and polymers involved in gelation with respect to their route of administration. A lot of work has been done with smart polymeric gelling system taking the advantage of stimuli (temperature and pH) triggered sol-gel phase-transition in the administered area that have great prospective in biomedical and pharmaceutical applications, particularly in target-specific controlled drug delivery systems. EXPERT OPINION Although the principle of gelation is so attractive, key issues remain to be solved which include (i) variability of the drug release, (ii) avoidance of burst release in case of depot formulation, and (iii) issues related to toxicity. Unfortunately, till now area concerning the detailed processes of the gelling formation is still not much explored. Despite this proclamation, many efforts are made in industry and institutions to improve concerned approaches. New materials and approaches enter the preclinical and clinical phases and one can be sure that this strategy will gain further clinical importance within the next years. Thus, this review article will assuredly serve as an informative tool for the innovators working in the concern area.
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Affiliation(s)
- Ajazuddin
- Rungta College of Pharmaceutical Sciences and Research, C.G., 490024, India
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Kulkarni RV, Sa B. Polyacrylamide-Grafted-Alginate-Based pH-Sensitive Hydrogel Beads for Delivery of Ketoprofen to the Intestine: in Vitro and in Vivo Evaluation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 20:235-51. [DOI: 10.1163/156856209x404514] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Raghavendra V. Kulkarni
- a Center for Advanced Research in Pharmaceutical Sciences, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700 032, India
| | - Biswanath Sa
- b Center for Advanced Research in Pharmaceutical Sciences, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700 032, India
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Olukman M, Şanlı O, Solak EK. Release of Anticancer Drug 5-Fluorouracil from Different Ionically Crosslinked Alginate Beads. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbnb.2012.34048] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Patel DM, Patel DK, Patel CN. Formulation and evaluation of floating oral in situ gelling system of amoxicillin. ISRN PHARMACEUTICS 2011; 2011:276250. [PMID: 22389849 PMCID: PMC3263723 DOI: 10.5402/2011/276250] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 05/08/2011] [Indexed: 11/23/2022]
Abstract
Purpose. Effective Helicobacter pylori eradication requires delivery of the antibiotic locally in the stomach. High dose of amoxicillin (750 to 1000 mg) is difficult to incorporate in floating tablets but can easily be given in liquid dosage form. Keeping the above facts in mind, we made an attempt to develop a new floating in situ gelling system of amoxicillin with increased residence time using sodium alginate as gelling polymer to eradicate H. pylori. Methods. Floating in situ gelling formulations were prepared using sodium alginate, calcium chloride, sodium citrate, hydroxypropyl methyl cellulose K100, and sodium bicarbonate. The prepared formulations were evaluated for solution viscosity, floating lag time, total floating time, and in vitro drug release. The formulation was optimized using a 3(2) full factorial design. Dissolution data were fitted to various models to ascertain kinetic of drug release. Regression analysis and analysis of variance were performed for dependent variables. Results. All formulations (F(1)-F(9)) showed floating within 30 s and had total floating time of more than 24 h. All the formulations showed good pourability. It was observed that concentration of sodium alginate and HPMC K100 had significant influence on floating lag time, cumulative percentage drug release in 6 h and 10 h. The batch F(8) was considered optimum since it showed more similarity in drug release (f(2) = 74.38) to the theoretical release profile. Conclusion. Floating in situ gelling system of amoxicillin can be formulated using sodium alginate as a gelling polymer to sustain the drug release for 10 to 12 h with zero-order release kinetics.
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Affiliation(s)
- Dasharath M. Patel
- Department of Pharmaceutics, Shri Sarvajanik Pharmacy College, Near Arvind Baug, Mehsana, Gujarat 384 001, India
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