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Ning Hiew T, Wai Siew L, Wannaphatchaiyong S, Elsergany RN, Pichayakorn W, Boonme P, Wan Sia Heng P, Valeria Liew C. Influence of talc and hydrogenated castor oil on the dissolution behavior of metformin-loaded pellets with acrylic-based sustained release coating. Int J Pharm 2023; 640:122984. [PMID: 37116600 DOI: 10.1016/j.ijpharm.2023.122984] [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: 02/16/2023] [Revised: 04/05/2023] [Accepted: 04/21/2023] [Indexed: 04/30/2023]
Abstract
Multi-unit pellet system (MUPS) is of great interest as it is amenable to customization. MUPS comprises multi-particulates, usually as pellets or spheroids, which can be coated with diffusion barrier coatings. One commonly used diffusion barrier coating is the methacrylic acid copolymer, which can be used as a taste masking, enteric or sustained release polymer. While the versatility of methacrylic acid copolymers makes them pliable for pellet coating, there are impediments associated with their use. Additives commonly required with this polymer, including plasticizer and anti-adherent, have been shown to weaken the film strength. The objective of this study was to investigate the impact of osmotic pressure within the core on the sustained release coat integrity and functionality. Hydrogenated castor oil (HCO) was chosen as the additive to be studied. Metformin-loaded pellets, prepared via extrusion-spheronization, were coated with ethyl acrylate and methyl methacrylate copolymer (Eudragit RS 30 D) with talc, talc-HCO, or HCO to different coat thicknesses. Drug release was investigated using the USP dissolution apparatus 2 and an ultraviolet imager. The swelling of the pellets when wetted was monitored by video imaging through a microscope. When coated to 7.5 % coat weight gain, coats with HCO slowed down drug release more than the other pellets. The pellets also swelled the most, which suggests that they were more resistant to the osmotic pressure exerted by metformin. For drugs which exert high osmotic pressure, HCO can serve as an efficient alternative to talc in the preparation of methacrylic acid copolymer coatings.
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Affiliation(s)
- Tze Ning Hiew
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18, Science Drive 4, Singapore 117543, Singapore
| | - Leong Wai Siew
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18, Science Drive 4, Singapore 117543, Singapore
| | - Suchipha Wannaphatchaiyong
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand; GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18, Science Drive 4, Singapore 117543, Singapore
| | - Ramy N Elsergany
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18, Science Drive 4, Singapore 117543, Singapore
| | - Wiwat Pichayakorn
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand
| | - Prapaporn Boonme
- Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla 90112, Thailand
| | - Paul Wan Sia Heng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18, Science Drive 4, Singapore 117543, Singapore
| | - Celine Valeria Liew
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18, Science Drive 4, Singapore 117543, Singapore.
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2
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Gao C, Gang H, Liu J, Mu B, Yang S. A New Benzylated Fatty Acid Amide Amphoteric Surfactant Derived from Hydrogenated Castor Oil with
Ultra‐Low
Interfacial Tension between Crude Oil and Brine. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cheng‐Long Gao
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry East China University of Science and Technology Shanghai 200237 P.R. China
- Engineering Research Center for Microbial Enhanced Energy Recovery Shanghai 200237 P.R. China
| | - Hong‐Ze Gang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry East China University of Science and Technology Shanghai 200237 P.R. China
- Engineering Research Center for Microbial Enhanced Energy Recovery Shanghai 200237 P.R. China
| | - Jin‐Feng Liu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry East China University of Science and Technology Shanghai 200237 P.R. China
- Engineering Research Center for Microbial Enhanced Energy Recovery Shanghai 200237 P.R. China
| | - Bo‐Zhong Mu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry East China University of Science and Technology Shanghai 200237 P.R. China
- Engineering Research Center for Microbial Enhanced Energy Recovery Shanghai 200237 P.R. China
| | - Shi‐Zhong Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry East China University of Science and Technology Shanghai 200237 P.R. China
- Engineering Research Center for Microbial Enhanced Energy Recovery Shanghai 200237 P.R. China
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Gretić M, Štanfel M, Barbarić J, Rimac N, Matijašić G. In vitro behavior of dronedarone hydrochloride loaded pellets using vacuum impregnation technique. Eur J Pharm Biopharm 2021; 162:70-81. [PMID: 33727144 DOI: 10.1016/j.ejpb.2021.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 02/25/2021] [Accepted: 03/06/2021] [Indexed: 11/18/2022]
Abstract
Pharmaceutical pellets are a versatile and adaptable drug carrier system with pharmacological and technological advantages specific to multiparticulate delivery systems. Depending on their porosity and formulation procedure, a controlled drug release pattern can be achieved using a variety of pellet production and drug loading techniques. In the present paper, we have developed microcrystalline cellulose based porous pellets by extrusion/spheronization process. Two types of dronedarone hydrochloride suspensions were prepared in order to load drug onto carrier pellets using vacuum impregnation method. Despite its extensive use in the biomedical field of research, this technique hasn't been applied yet as means of incorporating drugs into inert and porous pellets. In addition, drug release control was tested by spray coating the pellets with hydroxypropyl methylcellulose in a fluidized bed. Pellet morphology, porosity and dissolution behavior were determined and the results indicate that DNR particle size affects the drug incorporation mechanism and, therefore, drug release patterns obtained through in vitro tests. Additionally, it was proven that polymer-based film-coat significantly slows down the drug release from the pellets. In vitro studies of the coated pellets in biorelevant fluids have shown that DNR release profiles are directly related to the type of dissolution media used. Vacuum impregnation was found to be promising technique for incorporation of DNR onto the surface of the porous pellets and into their pores.
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Affiliation(s)
- M Gretić
- University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia.
| | - M Štanfel
- University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia.
| | - J Barbarić
- University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia.
| | - N Rimac
- University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia.
| | - G Matijašić
- University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia.
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Leitner S, Solans C, García-Celma MJ, Morral-Ruíz G, Melgar-Lesmes P, Calderó G. Ethylcellulose nanoparticles prepared from nano-emulsion templates as new folate binding haemocompatible platforms. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111682. [PMID: 33545844 DOI: 10.1016/j.msec.2020.111682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 11/29/2022]
Abstract
Ethylcellulose is a biocompatible polymer attracting increasing interest for biomedical applications. In the present work, the formation of folate-ethylcellulose nanoparticle complexes from nano-emulsion templates prepared by a low-energy approach, using aqueous components suitable for biomedical applications has been investigated. The composition of the aqueous component is shown to be crucial for the formation of stable nano-emulsions and influences the zeta potential values. The ethylcellulose nanoparticles with mean sizes around 100 nm were obtained from the nano-emulsions by solvent evaporation and showed positive zeta potential values above +20 mV due to the presence of the cationic surfactant. The nanoparticles were successfully complexed with folate, as evidenced by both particle size and zeta potential measurements. The complexes prepared with HEPES buffered glucose solution showed excellent haemocompatibility, which make them promising for parenteral therapeutic applications and also for those in which easy access to systemic circulation may occur, like in lungs.
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Affiliation(s)
- Stefanie Leitner
- Institut de Química Avançada de Catalunya (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - Conxita Solans
- Institut de Química Avançada de Catalunya (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain
| | - María José García-Celma
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Genoveva Morral-Ruíz
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Pedro Melgar-Lesmes
- Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Gabriela Calderó
- Institut de Química Avançada de Catalunya (IQAC-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain; Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Barcelona, Spain; Departament de Farmàcia i Tecnologia Farmacèutica i Fisicoquímica, Univ. de Barcelona. Unitat Associada d'I+D al CSIC, IN2UB- Av Joan XXIII 27-31, 08028 Barcelona, Spain.
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Khoder M, Schropp V, Zeitler S, Pereira B, Habashy R, Royall PG, Wang JTW, Alhnan MA. A novel natural GRAS-grade enteric coating for pharmaceutical and nutraceutical products. Int J Pharm 2020; 584:119392. [DOI: 10.1016/j.ijpharm.2020.119392] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 01/23/2023]
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Hiew TN, Tian YH, Tan HM, Heng PWS. A mechanistic understanding of compression damage to the dissolubility of coated pellets in tablets. Eur J Pharm Biopharm 2019; 146:93-100. [PMID: 31786321 DOI: 10.1016/j.ejpb.2019.11.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/17/2019] [Accepted: 11/25/2019] [Indexed: 01/27/2023]
Abstract
Damage to the drug diffusion coat barrier of controlled release pellets by the compaction force when preparing multiple-unit pellet system tablets is a major concern. Previous studies have shown that pellets located at the tablet axial and radial peripheral surfaces were more susceptible to damage when compacted due to the considerable shear encountered at these locations. Hence, this study was designed to assess with precision the impact of pellet spatial position in the compact on the extent of coat damage by the compaction force via a single pellet in minitablet (SPIM) system. Microcrystalline cellulose (MCC) pellet cores were consecutively coated with a drug layer followed by a sustained release layer. Chlorpheniramine maleate was the model drug used. Using a compaction simulator, the coated pellets were compacted singly into 3 mm diameter SPIMs with MCC as the filler. SPIMs with individual pellets placed in seven positions were prepared. The uncompacted and compacted coated pellets, as SPIMs, were subjected to drug release testing. The dissolution results showed that pellets placed at the top-radial position were the most susceptible to coat damage by the compaction force, while pellets positioned within the minitablet at the middle and upper quadrant positions showed the least damage. The SPIM system was found to be effective at defining the extent of coat damage to the pellet spatial position in the compact. This study confirmed that coated pellets located at the periphery were more susceptible to damage by compaction, with pellets located at the top-radial position showing the greatest extent of coat damage. However, if the pellet was completely encrusted by the cushioning filler, coat damage could be mitigated. Further investigations were directed at how the extent of coat damage impacted drug release. Interestingly, small punctures were found to be most detrimental to drug release whilst coats with large surface cuts did not completely fail. A damaged pellet coat has some self-sealing ability and failure is not total. Thus, this study provides a deeper understanding of the consequence of coat damage to drug release when sustained release coated pellets are breached.
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Affiliation(s)
- Tze Ning Hiew
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Yu Harn Tian
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Huei Ming Tan
- Engineering Science Programme, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore
| | - Paul Wan Sia Heng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
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Calderó G, Leitner S, García-Celma M, Solans C. Modulating size and surface charge of ethylcellulose nanoparticles through the use of cationic nano-emulsion templates. Carbohydr Polym 2019; 225:115201. [DOI: 10.1016/j.carbpol.2019.115201] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 08/01/2019] [Accepted: 08/12/2019] [Indexed: 01/25/2023]
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