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Synytsya A, Poučková P, Zadinová M, Troshchynska Y, Štětina J, Synytsya A, Saloň I, Král V. Hydrogels based on low-methoxyl amidated citrus pectin and flaxseed gum formulated with tripeptide glycyl-l-histidyl-l-lysine improve the healing of experimental cutting wounds in rats. Int J Biol Macromol 2020; 165:3156-3168. [PMID: 33031852 DOI: 10.1016/j.ijbiomac.2020.09.251] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 09/06/2020] [Accepted: 09/29/2020] [Indexed: 12/19/2022]
Abstract
Hydrogels based on natural and modified polysaccharides represent growing group of suitable matrices for the construction of effective wound healing materials. Bioactive tripeptide glycyl-l-histidyl-l-lysine and amino acid α-l-arginine are known to accelerate wound healing and skin repair. In this study, hydrogels based on low-methoxyl amidated citrus pectin or flaxseed gum were prepared and used for the transport of these healing agents to the experimental cutting wounds affected by extensive skin damage. Fourier-transform infrared spectroscopy, rheology, differential scanning calorimetry, scanning electron microscopy, swelling and release tests confirmed that these hydrogels differed in structure and physical properties. The cationic tripeptide was found to bind to carboxylic groups in LMA pectin, and the C3OH hydroxyl and ring oxygen O5 are involved in this interaction. The pectin hydrogel showed high viscosity and strong elastic properties, while the flaxseed gum hydrogel was characterised as a viscoelastic system of much lower viscosity. The former hydrogel released the drugs very slowly, while the latter hydrogel demonstrated zero order releasing kinetics optimal for drug delivery. In the in vivo wound healing testing on rats, both polysaccharide hydrogels improved the healing process mediated by the mentioned biomolecules. The tripeptide applied in the hydrogels showed significantly higher healing degree and lower healing time than in the control animals without treatment and when it was applied in an aqueous solution. Despite the absence of a synergistic effect, the mixture of the tripeptide and α-l-arginine in the hydrogels was also quite effective in wound healing. According to histological analysis, complete healing was achieved only when using the tripeptide in the flaxseed gum hydrogel. These observations might have an important prospect in clinical application of polysaccharide hydrogels.
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Affiliation(s)
- Alla Synytsya
- Department of Analytical Chemistry, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic; BIOCEV, 1st Faculty of Medicine, Charles University, Průmyslová 595, 252 50 Vestec, Czech Republic.
| | - Pavla Poučková
- Institute of Biophysics and Informatics, 1st Faculty of Medicine, Charles University, Kateřinská 1660/32, 121 08 Prague 2, Czech Republic
| | - Marie Zadinová
- Institute of Biophysics and Informatics, 1st Faculty of Medicine, Charles University, Kateřinská 1660/32, 121 08 Prague 2, Czech Republic
| | - Yana Troshchynska
- Department of Dairy, Fat and Cosmetics, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic; Department of Carbohydrates and Cereals, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jiří Štětina
- Department of Dairy, Fat and Cosmetics, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Andriy Synytsya
- Department of Carbohydrates and Cereals, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ivan Saloň
- Department of Chemical Engineering, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Vladimír Král
- Department of Analytical Chemistry, UCT Prague, Technická 5, 166 28 Prague 6, Czech Republic; BIOCEV, 1st Faculty of Medicine, Charles University, Průmyslová 595, 252 50 Vestec, Czech Republic
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Gadalla HH, Mohammed FA, El-Sayed AM, Soliman GM. Colon-targeting of progesterone using hybrid polymeric microspheres improves its bioavailability and in vivo biological efficacy. Int J Pharm 2020; 577:119070. [PMID: 31981708 DOI: 10.1016/j.ijpharm.2020.119070] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/13/2020] [Accepted: 01/18/2020] [Indexed: 01/20/2023]
Abstract
This study aims to enhance progesterone (PG) oral bioavailability via its incorporation into hybrid colon-targeted pectin/NaCMC microspheres (MS) cross-linked with Zn2+ and Al3+. The MS were characterized for particle morphology, encapsulation efficiency, swelling behavior, drug release, mucoadhesivity and colon-specific degradability. Response-surface methodology was adopted to optimize the fabrication conditions. Enhancement of in vivo drug performance was evaluated through pharmacokinetic and pharmacodynamic studies. The optimized formulation was typically spherical with a mean diameter of 1031 µm and drug entrapment efficiency of 88.8%. This formulation exhibited pH-dependent swelling, negligible drug release in simulated gastric fluid and sustained-release pattern in simulated small intestinal fluid with a mean t50% of 26.5 h. It also showed prolonged and preferential adhesion to rat colonic mucosa, as well as expedited degradation in presence of rat caecal contents. The MS significantly increased the area under the curve and mean residence time by 1.8 and 2.3-fold, respectively compared to the free drug. Orally administered MS showed ~10 times increase in myometrial thickness compared with the drug suspension and elicited uterine responses very similar to that obtained parenterally. These results confirm the ability of this new carrier system to improve the oral bioavailability of PG and attain adequate clinical efficacy.
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Affiliation(s)
- Hytham H Gadalla
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Fergany A Mohammed
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ahmed M El-Sayed
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ghareb M Soliman
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia.
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Güner OZ, Cam C, Arabacioglu-Kocaaga B, Batirel S, Güner FS. Theophylline-loaded pectin-based hydrogels. I. Effect of medium pH and preparation conditions on drug release profile. J Appl Polym Sci 2018. [DOI: 10.1002/app.46731] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ozde Zeynep Güner
- Department of Chemical Engineering; Istanbul Technical University; Maslak Istanbul 34469 Turkey
| | - Cansu Cam
- Department of Chemical Engineering; Istanbul Technical University; Maslak Istanbul 34469 Turkey
| | | | - Saime Batirel
- Department of Medical Biochemistry, School of Medicine; Marmara University; Maltepe Istanbul 34854 Turkey
| | - F. Seniha Güner
- Department of Chemical Engineering; Istanbul Technical University; Maslak Istanbul 34469 Turkey
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Novel disintegrating microcrystalline cellulose pellets with improved drug dissolution performance. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2012.08.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
INTRODUCTION Biopolymers have been used extensively in the pharmaceutical field. Pectin, a biopolymer, has several unique properties that enable it to be used as an excipient or carrier for oral drug delivery systems. Accordingly, several investigators have identified the benefits of pectin-based delivery systems for oral drug administration. AREAS COVERED This review first describes the chemical structure, source and production, degree of esterification and gel formation properties of pectin. The application of pectin in various oral drug delivery platforms is also discussed, that is, controlled release systems, gastro-retentive systems, colon-specific delivery systems and mucoadhesive delivery systems. EXPERT OPINION Pectin from different sources provides different gelling abilities, due to variations in molecular size and chemical composition. Like other natural polymers, a major problem with pectin is inconsistency in reproducibility between samples, which may result in poor reproducibility in delivery characteristics. Scintigraphic studies and in vivo studies, in both animals and human volunteers, demonstrate the successful development of a pectin-based colon-specific drug delivery system. Pectin-based controlled release systems, gastro-retentive systems and mucoadhesive systems present promising approaches for increasing the bioavailability of drugs, but are in their infancy. A lack of direct correlation between in vitro release and in vivo absorption studies is a major concern with these systems.
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Affiliation(s)
- Pornsak Sriamornsak
- Silpakorn University, Department of Pharmaceutical Technology, Pharmaceutical Biopolymer Group (PBiG), Faculty of Pharmacy, Nakhon Pathom 73000, Thailand.
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Effect of drying technique and disintegrant on physical properties and drug release behavior of microcrystalline cellulose-based pellets prepared by extrusion/spheronization. Chem Eng Res Des 2010. [DOI: 10.1016/j.cherd.2009.07.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kulkarni RB, Amin PD. Masking of Unpleasant Gustatory Sensation by Cross-Linking of Dehydrated Paracetamol Alginate Pellets Produced by Extrusion-Spheronization. Drug Dev Ind Pharm 2009; 34:199-205. [DOI: 10.1080/03639040701539974] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Piao J, Lee JE, Weon KY, Kim DW, Lee JS, Park JDS, Nishiyama Y, Fukui I, Kim JS. Development of novel mucoadhesive pellets of metformin hydrochloride. Arch Pharm Res 2009; 32:391-7. [DOI: 10.1007/s12272-009-1312-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Revised: 01/29/2009] [Accepted: 02/23/2009] [Indexed: 10/20/2022]
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Chitosan microspheres as candidate plasmid vaccine carrier for oral immunisation of Japanese flounder (Paralichthys olivaceus). Vet Immunol Immunopathol 2008; 126:220-9. [DOI: 10.1016/j.vetimm.2008.07.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2007] [Revised: 06/16/2008] [Accepted: 07/03/2008] [Indexed: 11/18/2022]
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Sriamornsak P, Kennedy RA. Swelling and diffusion studies of calcium polysaccharide gels intended for film coating. Int J Pharm 2008; 358:205-13. [DOI: 10.1016/j.ijpharm.2008.03.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2007] [Revised: 02/13/2008] [Accepted: 03/08/2008] [Indexed: 11/26/2022]
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Baumgartner S, Pavli M, Kristl J. Effect of calcium ions on the gelling and drug release characteristics of xanthan matrix tablets. Eur J Pharm Biopharm 2008; 69:698-707. [DOI: 10.1016/j.ejpb.2007.11.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Revised: 11/23/2007] [Accepted: 11/27/2007] [Indexed: 11/15/2022]
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Sriamornsak P, Nunthanid J, Luangtana-anan M, Weerapol Y, Puttipipatkhachorn S. Alginate-based pellets prepared by extrusion/spheronization: Effect of the amount and type of sodium alginate and calcium salts. Eur J Pharm Biopharm 2008; 69:274-84. [DOI: 10.1016/j.ejpb.2007.09.012] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Revised: 09/20/2007] [Accepted: 09/20/2007] [Indexed: 11/16/2022]
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Sriamornsak P, Thirawong N, Cheewatanakornkool K, Burapapadh K, Sae-Ngow W. Cryo-scanning electron microscopy (cryo-SEM) as a tool for studying the ultrastructure during bead formation by ionotropic gelation of calcium pectinate. Int J Pharm 2008; 352:115-22. [DOI: 10.1016/j.ijpharm.2007.10.038] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2007] [Revised: 10/16/2007] [Accepted: 10/20/2007] [Indexed: 10/22/2022]
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Sriamornsak P, Kennedy RA. Development of polysaccharide gel-coated pellets for oral administration: swelling and release behavior of calcium pectinate gel. AAPS PharmSciTech 2007; 8:E79. [PMID: 17915829 DOI: 10.1208/pt0803079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to examine the effect of pellet size, pectin type, pectin concentration, and dissolution medium on the swelling and drug release behavior of spherical pellets containing theophylline and coated with 2 different calcium pectinates, using a multi-level factorial design approach. The spherical pellets were prepared by an extrusion-spheronization method and then coated with calcium pectinate using the diffusion-controlled interfacial complexation technique, which provides a defect-free and uniform coating on solid cores. Theophylline release from the pellets was slowed by the application of the coatings. The time to release 50% of the payload (ie, T50) in an acidic medium was approximately 7 minutes from uncoated small pellets and was 55 minutes after an amidated calcium pectinate coat was applied; a comparable coat on large pellets showed a T50 of 93 minutes. Drug release profiles of dry coated pellets showed a lag time (all less than 20 minutes) when the gel coat hydrated and swelled, followed by a zero-order release. It was found that the release rate was controlled by the pellet size, pectin type, pectin concentration, and dissolution medium.
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Sriamornsak P, Kennedy RA. Effect of drug solubility on release behavior of calcium polysaccharide gel-coated pellets. Eur J Pharm Sci 2007; 32:231-9. [PMID: 17889515 DOI: 10.1016/j.ejps.2007.08.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Revised: 07/16/2007] [Accepted: 08/01/2007] [Indexed: 11/16/2022]
Abstract
The aim of this study was to investigate the effect of drug solubility on the release behavior from calcium polysaccharide gel (CaPG)-coated pellets. Three different drugs with similar chemical structure, but different water solubility, namely caffeine (CAF), theophylline (TPL) and theobromine (TBR), were used. Drug-loaded spherical pellets were manufactured by an extrusion-spheronization method. The CaPG was applied on the pellets loaded with different drugs by interfacial complexation coating. The encapsulation efficiency of coated pellets was found to vary from 57.6 to 84.3%, depending on the solubility of the active drug and polysaccharide type. Drug release from different uncoated pellets was relatively unaffected by pH and release media but depended mainly on drug solubility. Release behavior was significantly modified in the pellets coated with CaPG, for all of the drugs tested. Drug release from coated pellets of the different drugs showed different release kinetics. The difference in the drug release is probably due to the difference in the drug dissolution within the core, before its partition and diffusion through the CaPG coat. The CAF dissolved faster and achieved a higher concentration in solution, which drove diffusion. The release of TBR from the coated pellets was much slower than that of the CAF or TPL because of its low solubility. However, the release of all drugs was about four- to sixfold slower for coated than uncoated pellets, suggesting that the coating influenced the retardation of drug release from the coated pellets. Therefore, the CaPG coating may provide a sustained release delivery system for all drugs tested.
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Affiliation(s)
- Pornsak Sriamornsak
- School of Biomedical Sciences, Charles Sturt University, Locked Bag 588, Wagga Wagga 2678, NSW, Australia
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