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Bulut E, Turhan Y. Synthesis and characterization of temperature-sensitive microspheres based on acrylamide grafted hydroxypropyl cellulose and chitosan for the controlled release of amoxicillin trihydrate. Int J Biol Macromol 2021; 191:1191-1203. [PMID: 34614414 DOI: 10.1016/j.ijbiomac.2021.09.193] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 09/12/2021] [Accepted: 09/28/2021] [Indexed: 02/01/2023]
Abstract
This study deals with the preparation of temperature-sensitive chitosan/hydroxypropyl cellulose-graft-polyacrylamide (CS/HPC-g-PAAm) blend microspheres as a controlled drug release system. For this purpose, HPC-g-PAAm copolymers of hydroxypropyl cellulose (HPC) with acrylamide (AAm) were synthesized using cerium (IV) ammonium nitrate as initiator. The HPC-g-PAAm copolymers were characterized by using Fourier transform infrared spectroscopy (FTIR), elemental analysis, and differential scanning calorimetry (DSC). Lower critical solution temperatures (LCST) of the synthesized copolymers were determined. Temperature-sensitive blend microspheres of HPC-g-PAAm and chitosan were prepared by emulsion cross-linking method using glutaraldehyde (GA) as a cross-linker in the hydrochloric acid catalyst (HCl) and they were used to achieve controlled release of amoxicillin trihydrate (AMX), an antibiotic drug. The microspheres were characterized by DSC, X-ray diffraction (X-RD), and FTIR spectroscopy. In addition, surfaces of empty and drug-loaded microspheres were examined by scanning electron microscopy (SEM). The effects of variables such as CS/HPC-g-PAAm ratio, drug/polymer ratio, amount of cross-linker, and reaction time of grafting on AMX release were investigated at three different pH environments (1.2, 6.8, 7.4) at 25 °C, 37 °C, and 50 °C. The release results showed that the microspheres had temperature sensitivity and the AMX release was slightly more controlled by especially increasing graft yield (%).
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Affiliation(s)
- Emine Bulut
- Department of Food Processing, Bolvadin Vocational School, Afyon Kocatepe University, 03300 Afyonkarahisar, Turkey.
| | - Yakup Turhan
- Department of Chemistry, Science and Arts Faculty, Afyon Kocatepe University, 03200 Afyonkarahisar, Turkey
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Grgić J, Šelo G, Planinić M, Tišma M, Bucić-Kojić A. Role of the Encapsulation in Bioavailability of Phenolic Compounds. Antioxidants (Basel) 2020; 9:E923. [PMID: 32993196 PMCID: PMC7601682 DOI: 10.3390/antiox9100923] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/19/2020] [Accepted: 09/23/2020] [Indexed: 12/12/2022] Open
Abstract
Plant-derived phenolic compounds have multiple positive health effects for humans attributed to their antioxidative, anti-inflammatory, and antitumor properties, etc. These effects strongly depend on their bioavailability in the organism. Bioaccessibility, and consequently bioavailability of phenolic compounds significantly depend on the structure and form in which they are introduced into the organism, e.g., through a complex food matrix or as purified isolates. Furthermore, phenolic compounds interact with other macromolecules (proteins, lipids, dietary fibers, polysaccharides) in food or during digestion, which significantly influences their bioaccessibility in the organism, but due to the complexity of the mechanisms through which phenolic compounds act in the organism this area has still not been examined sufficiently. Simulated gastrointestinal digestion is one of the commonly used in vitro test for the assessment of phenolic compounds bioaccessibility. Encapsulation is a method that can positively affect bioaccessibility and bioavailability as it ensures the coating of the active component and its targeted delivery to a specific part of the digestive tract and controlled release. This comprehensive review aims to present the role of encapsulation in bioavailability of phenolic compounds as well as recent advances in coating materials used in encapsulation processes. The review is based on 258 recent literature references.
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Affiliation(s)
| | | | | | | | - Ana Bucić-Kojić
- Faculty of Food Technology Osijek, Josip Juraj Strossmayer University of Osijek, F. Kuhača 18, HR-31 000 Osijek, Croatia; (J.G.); (G.Š.); (M.P.); (M.T.)
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Lachowicz D, Mielczarek P, Wirecka R, Berent K, Karewicz A, Szuwarzyński M, Zapotoczny S. Nanohydrogels Based on Self-Assembly of Cationic Pullulan and Anionic Dextran Derivatives for Efficient Delivery of Piroxicam. Pharmaceutics 2019; 11:E622. [PMID: 31766517 PMCID: PMC6956171 DOI: 10.3390/pharmaceutics11120622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/11/2019] [Accepted: 11/15/2019] [Indexed: 12/14/2022] Open
Abstract
A cationic derivative of pullulan was obtained by grafting reaction and used together with dextran sulfate to form polysaccharide-based nanohydrogel cross-linked via electrostatic interactions between polyions. Due to the polycation-polyanion interactions nanohydrogel particles were formed instantly and spontaneously in water. The nanoparticles were colloidally stable and their size and surface charge could be controlled by the polycation/polyanion ratio. The morphology of the obtained particles was visualized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM). The resulting structures were spherical, with hydrodynamic diameters in the range of 100-150 nm. The binding constant (Ka) of a model drug, piroxicam, to the cationic pullulan (C-PUL) was determined by spectrophotometric measurements. The value of Ka was calculated according to the Benesi-Hildebrand equation to be (3.6 ± 0.2) × 103 M-1. After binding to cationic pullulan, piroxicam was effectively entrapped inside the nanohydrogel particles and released in a controlled way. The obtained system was efficiently taken up by cells and was shown to be biocompatible.
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Affiliation(s)
- Dorota Lachowicz
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (R.W.); (K.B.); (M.S.)
| | - Przemyslaw Mielczarek
- Department of Biochemistry and Neurobiology, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland;
- Maj Institute of Pharmacology, Polish Academy of Sciences, Smetna 12, 31-343 Krakow, Poland
| | - Roma Wirecka
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (R.W.); (K.B.); (M.S.)
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland
| | - Katarzyna Berent
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (R.W.); (K.B.); (M.S.)
| | - Anna Karewicz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (A.K.); (S.Z.)
| | - Michał Szuwarzyński
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, Poland; (R.W.); (K.B.); (M.S.)
| | - Szczepan Zapotoczny
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; (A.K.); (S.Z.)
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Abstract
Microparticles, microspheres, and microcapsules are widely used constituents of multiparticulate drug delivery systems, offering both therapeutic and technological advantages. Microparticles are generally in the 1–1000 µm size range, serve as multiunit drug delivery systems with well-defined physiological and pharmacokinetic benefits in order to improve the effectiveness, tolerability, and patient compliance. This paper reviews their evolution, significance, and formulation factors (excipients and procedures), as well as their most important practical applications (inhaled insulin, liposomal preparations). The article presents the most important structures of microparticles (microspheres, microcapsules, coated pellets, etc.), interpreted with microscopic images too. The most significant production processes (spray drying, extrusion, coacervation, freeze-drying, microfluidics), the drug release mechanisms, and the commonly used excipients, the characterization, and the novel drug delivery systems (microbubbles, microsponges), as well as the preparations used in therapy are discussed in detail.
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Sudareva N, Suvorova O, Saprykina N, Smirnova N, Bel'tyukov P, Petunov S, Radilov A, Vilesov A. Two-level delivery systems based on CaCO3 cores for oral administration of therapeutic peptides. J Microencapsul 2019; 35:619-634. [DOI: 10.1080/02652048.2018.1559247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Natalia Sudareva
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Olga Suvorova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Natalia Saprykina
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Natalia Smirnova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, Russian Federation
| | - Petr Bel'tyukov
- Occupational Pathology and Human Ecology, Research Institute of Hygiene, Kuzmolovsky, Russian Federation
| | - Sergey Petunov
- Occupational Pathology and Human Ecology, Research Institute of Hygiene, Kuzmolovsky, Russian Federation
| | - Andrey Radilov
- Occupational Pathology and Human Ecology, Research Institute of Hygiene, Kuzmolovsky, Russian Federation
| | - Alexander Vilesov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Saint Petersburg, Russian Federation
- I.P.Pavlov St. Petersburg Medical University, Saint Petersburg, Russian Federation
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Gatiganti DL, Srimathkandala MH, Ananthula MB, Bakshi V. Formulation and Evaluation of Oral Natural Polysaccharide Hydrogel Microbeads of Irbesartan. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/22297928.2016.1209427] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | | | | | - Vasudha Bakshi
- Anurag Group of Institutions, Ghatkesar, Telangana, India
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Sudareva N, Suvorova O, Saprykina N, Vilesov A, Bel’tyukov P, Petunov S. Alginate-containing systems for oral delivery of superoxide dismutase. Comparison of various configurations and their properties. J Microencapsul 2016; 33:487-496. [DOI: 10.1080/02652048.2016.1206146] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhu Y, Zheng Y, Wang A. A simple approach to fabricate granular adsorbent for adsorption of rare elements. Int J Biol Macromol 2015; 72:410-20. [DOI: 10.1016/j.ijbiomac.2014.08.039] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/07/2014] [Accepted: 08/10/2014] [Indexed: 10/24/2022]
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